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46617075

Retinoblastoma regulatory pathway in lung cancer.

Lung cancer is the leading cause of cancer related deaths accounting for more deaths than breast, colon and prostate cancers combined. The Rb-p16 regulatory pathway plays an essential role in tumor suppression in the lung epithelium. This is evidenced by the nearly universal alterations in Rb-p16 pathway components in lung cancer, and the increased incidence of pulmonary carcinomas in persons with germline Rb mutations. Interestingly, p16 loss and Rb mutations preferentially occur in phenotypically distinct lung cancer subtypes. Analysis of human tumors has identified progressive preneoplastic lesions that accumulate molecular alterations in an orderly sequence. Epigenetic p16 gene modifications represent an early event in lung cancer progression. This review summarizes the human studies that demonstrate a critical role for the Rb-p16 tumor suppressor pathway in lung carcinogenesis, and discusses how these findings in combination with genetically engineered mouse models have significantly contributed to our understanding of lung cancer pathogenesis.

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46695481

Human papillomavirus and Papanicolaou tests to screen for cervical cancer.

BACKGROUND Screening for cervical cancer based on testing for human papillomavirus (HPV) increases the sensitivity of detection of high-grade (grade 2 or 3) cervical intraepithelial neoplasia, but whether this gain represents overdiagnosis or protection against future high-grade cervical epithelial neoplasia or cervical cancer is unknown. METHODS In a population-based screening program in Sweden, 12,527 women 32 to 38 years of age were randomly assigned at a 1:1 ratio to have an HPV test plus a Papanicolaou (Pap) test (intervention group) or a Pap test alone (control group). Women with a positive HPV test and a normal Pap test result were offered a second HPV test at least 1 year later, and those who were found to be persistently infected with the same high-risk type of HPV were then offered colposcopy with cervical biopsy. A similar number of double-blinded Pap smears and colposcopies with biopsy were performed in randomly selected women in the control group. Comprehensive registry data were used to follow the women for a mean of 4.1 years. The relative rates of grade 2 or 3 cervical intraepithelial neoplasia or cancer detected at enrollment and at subsequent screening examinations were calculated. RESULTS At enrollment, the proportion of women in the intervention group who were found to have lesions of grade 2 or 3 cervical intraepithelial neoplasia or cancer was 51% greater (95% confidence interval [CI], 13 to 102) than the proportion of women in the control group who were found to have such lesions. At subsequent screening examinations, the proportion of women in the intervention group who were found to have grade 2 or 3 lesions or cancer was 42% less (95% CI, 4 to 64) and the proportion with grade 3 lesions or cancer was 47% less (95% CI, 2 to 71) than the proportions of control women who were found to have such lesions. Women with persistent HPV infection remained at high risk for grade 2 or 3 lesions or cancer after referral for colposcopy. CONCLUSIONS The addition of an HPV test to the Pap test to screen women in their mid-30s for cervical cancer reduces the incidence of grade 2 or 3 cervical intraepithelial neoplasia or cancer detected by subsequent screening examinations. (ClinicalTrials.gov number, NCT00479375 [ClinicalTrials.gov].).

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46743299

Chronic Exercise Increases Both Inducible and Endothelial Nitric Oxide Synthase Gene Expression in Endothelial Cells of Rat Aorta

Chronic exercise upregulates endothelial nitric oxide synthase (eNOS) gene expression. Whether the expression of inducible nitric oxide synthase (iNOS) is affected by exercise is unknown. We therefore investigated the effects of chronic exercise on iNOS and eNOS expression in isolated rat aortic endothelial and smooth muscle cells separately. Five-week-old male Wistar rats were randomly divided into control and exercise groups. After 10 weeks of running training, animals were sacrificed under ether anesthesia. The standard curve quantitative competitive reverse transcriptase-polymerase chain reaction method was used to quantify NOS mRNA expression in isolated endothelial/smooth muscle cells. To evaluate the functional role of iNOS, we examined phenylephrine-induced vascular responses with or without pretreatment with aminoguanidine. We found that (1) expression of iNOS and eNOS mRNA in endothelial cells was increased by chronic exercise and (2) chronic exercise blunted phenylephrine-induced vascular responses, probably by increasing NO release via iNOS. Our results show that chronic exercise increases both iNOS and eNOS gene expression in endothelium. These alterations may be partially responsible for the change in vascular response after exercise.

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46764350

Frontal stroke syndromes.

The frontal lobe is the largest lobe of the brain, and it is thus commonly involved in stroke. Moreover, almost one in five strokes is limited to the prerolandic areas. This high frequency of anatomical involvement is in sharp contrast with the apparent rarity of clinical frontal dysfunction in stroke. It is remarkable that frontal behavioral syndromes have been rather uncommonly reported in patients with stroke as compared to patients with other diseases, such as brain tumor. This fact is paradoxical, because an acute process (stroke) is expected to yield more clinical dysfunction than a more chronic disease (tumor). A volume effect may be the main factor leading to this phenomenon. Another interesting aspect of frontal strokes is the contribution of so-called 'silent' strokes, the recurrence of which may nevertheless lead to intellectual decline and compromise recovery from another stroke with more specific neurologic dysfunction. The contribution of stroke to understanding of frontal lobe dysfunction is important, because of the focal nature of this disease, and great opportunity for clinical-topographic classification correlations. One of the first modern attempts to develop a clinical-topographic classification of frontal lobe lesions came from the school of Luria, who tried to delineate three main types of frontal lobe syndromes (premotor syndrome, prefrontal syndrome, medial-frontal syndrome). Recent anatomic correlates using MRI make it possible to improve this classification. We suggest considering six main clinical-anatomic frontal stroke syndromes: (1) prefrontal; (2) premotor; (3) superior medial; (4) orbital-medial; (5) basal forebrain; (6) white matter. Finally, another fascinating topic relates to frontal lobe symptomatology due to stroke sparing the frontal cortex or white matter. This occurs mainly in three instances: lenticulo-capsular stroke, caudate stroke, and thalamic stroke. Studies using blood flow or metabolism measurements suggest that diaschisis (frontal lobe dysfunction from a remote lesion) may play a role. We believe that this is more likely to be related to dynamic interruption of complex circuitry than to static frontal lobe deactivation.

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46765242

Interaction of cytosine arabinoside and lovastatin in human leukemia cells.

Cytosine arabinoside (ara-C) is widely used for the treatment of leukemias and displays significant toxicities. Lovastatin, an HMG-CoA reductase inhibitor, is extensively used to treat hypercholesterolemia. To determine whether lovastatin could augment ara-C's activity we have examined their effects in the human erythroleukemia K562 cell line and the ara-C resistant ARAC8D cell line. A synergistic interaction between the two drugs was found. We have demonstrated that the interaction does not occur at the level of RAS but may involve lovastatin's effect of downregulating MAPK activity and preventing ara-C-induced MAPK activation. These studies represent the first description of a potentially beneficial interaction between lovastatin and ara-C that could be applied to the treatment of human leukemia.

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46816158

The crystal structure of TAL effector PthXo1 bound to its DNA target.

DNA recognition by TAL effectors is mediated by tandem repeats, each 33 to 35 residues in length, that specify nucleotides via unique repeat-variable diresidues (RVDs). The crystal structure of PthXo1 bound to its DNA target was determined by high-throughput computational structure prediction and validated by heavy-atom derivatization. Each repeat forms a left-handed, two-helix bundle that presents an RVD-containing loop to the DNA. The repeats self-associate to form a right-handed superhelix wrapped around the DNA major groove. The first RVD residue forms a stabilizing contact with the protein backbone, while the second makes a base-specific contact to the DNA sense strand. Two degenerate amino-terminal repeats also interact with the DNA. Containing several RVDs and noncanonical associations, the structure illustrates the basis of TAL effector-DNA recognition.

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46837626

Prediction of creatinine clearance from serum creatinine.

A formula has been developed to predict creatinine clearance (Ccr) from serum creatinine (Scr) in adult males: (see article)(15% less in females). Derivation included the relationship found between age and 24-hour creatinine excretion/kg in 249 patients aged 18-92. Values for Ccr were predicted by this formula and four other methods and the results compared with the means of two 24-hour Ccr's measured in 236 patients. The above formula gave a correlation coefficient between predicted and mean measured Ccr's of 0.83; on average, the difference predicted and mean measured values was no greater than that between paired clearances. Factors for age and body weight must be included for reasonable prediction.

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46926352

Dendritic cells, T cells and lymphatics: dialogues in migration and beyond.

Immune cells continuously recirculate through lymph vessels en route from peripheral tissues to the blood. Leuyte trafficking into and within lymph vessels is mediated by an interply with lymphatic endothelial cells (LECs). However, lymphatic vessels are much more than mere conduits for fluid and immune cell transport. Data accumulating during past several years indicate that LECs support T cell survival, induce tolerance to self-antigens, inhibit exaggerated T cell proliferation during immune response and maintain T cell memory. Reciprocally, leukocytes impact LEC biology: lymphatic vessel permeability depends on DCs while lymphocytes regulate LEC proliferation during inflammation. Altogether, these novel results provide important insights on intimate connections between LECs and leukocytes that contribute to the understanding of immune responses.

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47018050

CRISPR–Cas9 genome editing induces a p53-mediated DNA damage response

Here, we report that genome editing by CRISPR–Cas9 induces a p53-mediated DNA damage response and cell cycle arrest in immortalized human retinal pigment epithelial cells, leading to a selection against cells with a functional p53 pathway. Inhibition of p53 prevents the damage response and increases the rate of homologous recombination from a donor template. These results suggest that p53 inhibition may improve the efficiency of genome editing of untransformed cells and that p53 function should be monitored when developing cell-based therapies utilizing CRISPR–Cas9. CRISPR–Cas9-induced DNA damage triggers p53 to limit the efficiency of gene editing in immortalized human retinal pigment epithelial cells.

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47240151

Comparative Structural Analysis of Lipid Binding START Domains

BACKGROUND Steroidogenic acute regulatory (StAR) protein related lipid transfer (START) domains are small globular modules that form a cavity where lipids and lipid hormones bind. These domains can transport ligands to facilitate lipid exchange between biological membranes, and they have been postulated to modulate the activity of other domains of the protein in response to ligand binding. More than a dozen human genes encode START domains, and several of them are implicated in a disease. PRINCIPAL FINDINGS We report crystal structures of the human STARD1, STARD5, STARD13 and STARD14 lipid transfer domains. These represent four of the six functional classes of START domains. SIGNIFICANCE Sequence alignments based on these and previously reported crystal structures define the structural determinants of human START domains, both those related to structural framework and those involved in ligand specificity. ENHANCED VERSION This article can also be viewed as an enhanced version in which the text of the article is integrated with interactive 3D representations and animated transitions. Please note that a web plugin is required to access this enhanced functionality. Instructions for the installation and use of the web plugin are available in Text S1.

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49208216

Staphylococcus aureus infection dynamics

Staphylococcus aureus is a human commensal that can also cause systemic infections. This transition requires evasion of the immune response and the ability to exploit different niches within the host. However, the disease mechanisms and the dominant immune mediators against infection are poorly understood. Previously it has been shown that the infecting S. aureus population goes through a population bottleneck, from which very few bacteria escape to establish the abscesses that are characteristic of many infections. Here we examine the host factors underlying the population bottleneck and subsequent clonal expansion in S. aureus infection models, to identify underpinning principles of infection. The bottleneck is a common feature between models and is independent of S. aureus strain. Interestingly, the high doses of S. aureus required for the widely used "survival" model results in a reduced population bottleneck, suggesting that host defences have been simply overloaded. This brings into question the applicability of the survival model. Depletion of immune mediators revealed key breakpoints and the dynamics of systemic infection. Loss of macrophages, including the liver Kupffer cells, led to increased sensitivity to infection as expected but also loss of the population bottleneck and the spread to other organs still occurred. Conversely, neutrophil depletion led to greater susceptibility to disease but with a concomitant maintenance of the bottleneck and lack of systemic spread. We also used a novel microscopy approach to examine abscess architecture and distribution within organs. From these observations we developed a conceptual model for S. aureus disease from initial infection to mature abscess. This work highlights the need to understand the complexities of the infectious process to be able to assign functions for host and bacterial components, and why S. aureus disease requires a seemingly high infectious dose and how interventions such as a vaccine may be more rationally developed.

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49429882

Strategies for optimizing maternal nutrition to promote infant development

BACKGROUND The growing appreciation of the multi-faceted importance of optimal maternal nutrition to the health and development of the infant and young child is tempered by incompletely resolved strategies for combatting challenges. OBJECTIVE To review the importance of maternal nutrition and strategies being employed to optimize outcomes. METHODS Selected data from recent literature with special focus on rationale for and currently published results of maternal nutrition supplements, including lipid based nutrition supplements. RESULTS 1) An impelling rationale for improving the maternal and in utero environment of low resource populations has emerged to achieve improved fetal and post-natal growth and development. 2) Based partly on population increases in adult height over one-two generations, much can be achieved by reducing poverty. 3) Maternal, newborn and infant characteristics associated with low resource environments include evidence of undernutrition, manifested by underweight and impaired linear growth. 4) Apart from broad public health and educational initiatives, to date, most specific efforts to improve fetal growth and development have included maternal nutrition interventions during gestation. 5) The relatively limited but real benefits of both iron/folic acid (IFA) and multiple micronutrient (MMN) maternal supplements during gestation have now been reasonably defined. 6) Recent investigations of a maternal lipid-based primarily micronutrient supplement (LNS) have not demonstrated a consistent benefit beyond MMN alone. 7) However, effects of both MMN and LNS appear to be enhanced by commencing early in gestation. CONCLUSIONS Poor maternal nutritional status is one of a very few specific factors in the human that not only contributes to impaired fetal and early post-natal growth but for which maternal interventions have demonstrated improved in utero development, documented primarily by both improvements in low birth weights and by partial corrections of impaired birth length. A clearer definition of the benefits achievable by interventions specifically focused on correcting maternal nutrition deficits should not be limited to improvements in the quality of maternal nutrition supplements, but on the cumulative quantity and timing of interventions (also recognizing the heterogeneity between populations). Finally, in an ideal world these steps are only a prelude to improvements in the total environment in which optimal nutrition and other health determinants can be achieved.

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49432306

Key questions about the checkpoint blockade-are microRNAs an answer?

The introduction of immune-checkpoint blockade in the cancer therapy led to a paradigm change of the management of late stage cancers. There are already multiple FDA approved checkpoint inhibitors and many other agents are undergoing phase 2 and early phase 3 clinical trials. The therapeutic indication of immune checkpoint inhibitors expanded in the last years, but still remains unclear who can benefit. MicroRNAs are small RNAs with no coding potential. By complementary pairing to the 3' untranslated region of messenger RNA, microRNAs exert posttranscriptional control of protein expression. A network of microRNAs directly and indirectly controls the expression of checkpoint receptors and several microRNAs can target multiple checkpoint molecules, mimicking the therapeutic effect of a combined immune checkpoint blockade. In this review, we will describe the microRNAs that control the expression of immune checkpoints and we will present four specific issues of the immune checkpoint therapy in cancer: (1) imprecise therapeutic indication, (2) difficult response evaluation, (3) numerous immunologic adverse-events, and (4) the absence of response to immune therapy. Finally, we propose microRNAs as possible solutions for these pitfalls. We consider that in the near future microRNAs could become important therapeutic partners of the immune checkpoint therapy.

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49556906

Metformin reverses established lung fibrosis in a bleomycin model

Fibrosis is a pathological result of a dysfunctional repair response to tissue injury and occurs in a number of organs, including the lungs1. Cellular metabolism regulates tissue repair and remodelling responses to injury2-4. AMPK is a critical sensor of cellular bioenergetics and controls the switch from anabolic to catabolic metabolism5. However, the role of AMPK in fibrosis is not well understood. Here, we demonstrate that in humans with idiopathic pulmonary fibrosis (IPF) and in an experimental mouse model of lung fibrosis, AMPK activity is lower in fibrotic regions associated with metabolically active and apoptosis-resistant myofibroblasts. Pharmacological activation of AMPK in myofibroblasts from lungs of humans with IPF display lower fibrotic activity, along with enhanced mitochondrial biogenesis and normalization of sensitivity to apoptosis. In a bleomycin model of lung fibrosis in mice, metformin therapeutically accelerates the resolution of well-established fibrosis in an AMPK-dependent manner. These studies implicate deficient AMPK activation in non-resolving, pathologic fibrotic processes, and support a role for metformin (or other AMPK activators) to reverse established fibrosis by facilitating deactivation and apoptosis of myofibroblasts.

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50670403

Are expert athletes 'expert' in the cognitive laboratory? A meta-analytic review of cognition and sport expertise

SUMMARY Recent literature has demonstrated the usefulness of fitness and computer-based cognitive training as a means to enhance cognition and brain function. However, it is unclear whether the combination of fitness and cognitive training that results from years of extensive sport training also results in superior performance on tests of cognitive processes. In this study we examine, in a quantitative meta-analysis (k ¼20), the relationship between expertise in sports and laboratory-based measures of cognition. We found that athletes performed better on measures of processing speed and a category of varied attentionalparadigms, andathletesfrominterceptive sporttypesandmalesshowedthelargesteffects. Based on our results, more research should be done with higher-level cognitive tasks, such as tasks of executive function and more varied sub-domains of visual attention. Furthermore, future studies should incorporate more female athletes and use a diverse range of sport types and levelsof expertise.

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51386222

Effects of Age, Sex, and Ethnicity on the Association Between Apolipoprotein E Genotype and Alzheimer Disease: A Meta-analysis

Objective. —To examine more closely the association between apolipoprotein E (APOE) genotype and Alzheimer disease (AD) by age and sex in populations of various ethnic and racial denominations. Data Sources. —Forty research teams contributed data onAPOEgenotype, sex, age at disease onset, and ethnic background for 5930 patients who met criteria for probable or definite AD and 8607 controls without dementia who were recruited from clinical, community, and brain bank sources. Main Outcome Measures. —Odds ratios (ORs) and 95% confidence intervals (Cls) for AD, adjusted for age and study and stratified by major ethnic group (Caucasian, African American, Hispanic, and Japanese) and source, were computed forAPOEgenotypes ∈2/∈2,∈2/∈3,∈2/∈4,∈3/∈4 and ∈4/∈4 relative to the ∈3/∈3 group. The influence of age and sex on the OR for each genotype was assessed using logistic regression procedures. Results. —Among Caucasian subjects from clinic- or autopsy-based studies, the risk of AD was significantly increased for people with genotypes ∈2/∈4 (OR=2.6, 95% Cl=1.6-4.0), ∈3/∈4 (OR=3.2, 95% Cl=2.8-3.8), and ∈4/∈4 (OR=14.9, 95% CI=10.8-20.6); whereas, the ORs were decreased for people with genotypes ∈2/∈2 (OR=0.6, 95% Cl=0.2-2.0) and ∈2/∈3 (OR=0.6, 95% Cl=0.5-0.8). TheAPOE∈4-AD association was weaker among African Americans and Hispanics, but there was significant heterogeneity in ORs among studies of African Americans (P Conclusions. —TheAPOE∈4 allele represents a major risk factor for AD in all ethnic groups studied, across all ages between 40 and 90 years, and in both men and women. The association betweenAPOE∈4 and AD in African Americans requires clarification, and the attenuated effect ofAPOE∈4 in Hispanics should be investigated further.

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51706771

Comparison of glioblastoma (GBM) molecular classification methods.

Glioblastoma (GBM) is the most aggressive and common form of brain cancer in adults. GBM is characterized by poor survival and remarkably high tumors heterogeneity (both intertumoral and intratumoral), and lack of effective therapies. Recent high-throughput data revealed heterogeneous genetic/genomic/epigenetic features and led to multiple methods aiming to classify tumors according to the key molecular events that drive the most aggressive cellular components so that targeted therapies can be developed for individual subtypes. However, GBM molecular subtypes have not led to improvement of patients outcomes. Targeted or tailored therapies for specific mutations or subtypes largely failed due to the complexities arising from intratumoral molecular heterogeneity. Most tumors develop resistance to treatment and soon recur. GBM stem cells (GSCs) have been identified. Recent single cell sequencing studies of GBM suggest that intratumoral cellular heterogeneity can be partially explained by tumor cell hierarchy arising from GBM stem cells. Therefore, the molecular subtypes based on patient derived GSCs may potentially lead to more effective subtype-specific treatments. In this paper, we review the molecular alterations of GBM and molecular subtyping methods as well as subtype plasticity in primary and recurrent tumors emphasizing the clinical relevance of potential targets for further drug development.

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51728753

Mesenchymal Stromal Cells: From Discovery to Manufacturing and Commercialization

Over the last decades, mesenchymal stromal cells (MSC) have been the focus of intense research by academia and industry due to their unique features. MSC can be easily isolated and expanded through in vitro culture by taking full advantage of their self-renewing capacity. In addition, MSC exert immunomodulatory effects and can be differentiated into various lineages, which makes them highly attractive for clinical applications in cell-based therapies. In this review, we attempt to provide a brief historical overview of MSC discovery, characterization, and the first clinical studies conducted. The current MSC manufacturing platforms are reviewed with special attention regarding the use of bioreactors for the production of GMP-compliant clinically relevant cell numbers. The first commercial MSC-based products are also addressed, as well as the remaining challenges to the widespread use of MSC-derived products.

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51817902

Delta–Notch—and then? Protein interactions and proposed modes of repression by Hes and Hey bHLH factors

Hes and Hey genes are the mammalian counterparts of the Hairy and Enhancer-of-split type of genes in Drosophila and they represent the primary targets of the Delta-Notch signaling pathway. Hairy-related factors control multiple steps of embryonic development and misregulation is associated with various defects. Hes and Hey genes (also called Hesr, Chf, Hrt, Herp or gridlock) encode transcriptional regulators of the basic helix-loop-helix class that mainly act as repressors. The molecular details of how Hes and Hey proteins control transcription are still poorly understood, however. Proposed modes of action include direct binding to N- or E-box DNA sequences of target promoters as well as indirect binding through other sequence-specific transcription factors or sequestration of transcriptional activators. Repression may rely on recruitment of corepressors and induction of histone modifications, or even interference with the general transcriptional machinery. All of these models require extensive protein-protein interactions. Here we review data published on protein-protein and protein-DNA interactions of Hairy-related factors and discuss their implications for transcriptional regulation. In addition, we summarize recent progress on the identification of potential target genes and the analysis of mouse models.

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51865482

The Long Noncoding RNA CAREL Controls Cardiac Regeneration.

BACKGROUND Adult mammalian heart loses regeneration ability following ischemic injury due to the loss of cardiomyocyte mitosis. However, the molecular mechanisms underlying the post-mitotic nature of cardiomyocytes remain largely unknown. OBJECTIVES The purpose of this study was to define the essential role of long noncoding ribonucleic acids (lncRNAs) in heart regeneration during postnatal and adult injury. METHODS Myh6-driving cardiomyocyte-specific lncRNA-CAREL transgenic mice and adenovirus-mediated in vivo silencing of endogenous CAREL were used in this study. The effect of CAREL on cardiomyocyte replication and heart regeneration after apical resection or myocardial infarction was assessed by detecting mitosis and cytokinesis. RESULTS An lncRNA CAREL was found significantly up-regulated in cardiomyocytes from neonatal mice (P7) in parallel with loss of regenerative capacity. Cardiac-specific overexpression of CAREL in mice reduced cardiomyocyte division and proliferation and blunted neonatal heart regeneration after injury. Conversely, silencing of CAREL in vivo markedly promoted cardiac regeneration and improved heart functions after myocardial infarction in neonatal and adult mice. CAREL acted as a competing endogenous ribonucleic acid for miR-296 to derepress the expression of Trp53inp1 and Itm2a, the target genes of miR-296. Consistently, overexpression of miR-296 significantly increased cardiomyocyte replication and cardiac regeneration after injury. Decline of cardiac regenerative ability in CAREL transgenic mice was also rescued by miR-296. A short fragment containing the conserved sequence of CAREL reduced the proliferation of human induced pluripotent stem cell-derived cardiomyocytes as the full-length CAREL. CONCLUSIONS LncRNA CAREL regulates cardiomyocyte proliferation and heart regeneration in postnatal and adult heart after injury by acting as a competing endogenous ribonucleic acid on miR-296 that targets Trp53inp1 and Itm2a.

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51952430

BCAP links IL-1R to the PI3K–mTOR pathway and regulates pathogenic Th17 cell differentiation

The toll-like receptor (TLR) and interleukin (IL)-1 family of receptors share several signaling components, including the most upstream adapter, MyD88. We previously reported the discovery of B cell adapter for phosphoinositide 3-kinase (BCAP) as a novel toll-IL-1 receptor homology domain-containing adapter that regulates inflammatory responses downstream of TLR signaling. Here we find that BCAP plays a critical role downstream of both IL-1 and IL-18 receptors to regulate T helper (Th) 17 and Th1 cell differentiation, respectively. Absence of T cell intrinsic BCAP did not alter development of naturally arising Th1 and Th17 lineages but led to defects in differentiation to pathogenic Th17 lineage cells. Consequently, mice that lack BCAP in T cells had reduced susceptibility to experimental autoimmune encephalomyelitis. More importantly, we found that BCAP is critical for IL-1R-induced phosphoinositide 3-kinase-Akt-mechanistic target of rapamycin (mTOR) activation, and minimal inhibition of mTOR completely abrogated IL-1β-induced differentiation of pathogenic Th17 cells, mimicking BCAP deficiency. This study establishes BCAP as a critical link between IL-1R and the metabolic status of activated T cells that ultimately regulates the differentiation of inflammatory Th17 cells.

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51972698

Adapting the WHO package of essential noncommunicable disease interventions, Samoa

Problem Samoa has been struggling to address the burden of noncommunicable diseases at the health system, community and individual levels. Approach The World Health Organization (WHO) package of essential noncommunicable disease interventions for primary health care in low-resource settings was adopted in seven villages throughout Samoa in 2015. The National Steering Committee Members designed and implemented a screening process, and local facilitators and health-care workers collected health and lifestyle data. The WHO/International Society of Hypertension risk assessment was used on villagers older than 40 years to identify people at high risk of noncommunicable disease. Local setting Samoa is a small island developing state with increasing morbidity and mortality due to noncommunicable diseases. A national representative survey indicated that 50.1% (595/1188) of the Samoan adult population is at high risk of such diseases. High numbers of noncommunicable diseases are undiagnosed or untreated, because of shortage of health-care staff and lack of awareness of risk factors. Relevant changes The teams collected data from 2234 adults. For people older than 40 years, 6.7% (54/804) were identified as being at high-risk and were encouraged to seek treatment or manage risk factors. Community members developed an awareness programme to improve understanding of lifestyle risk factors. Lessons learnt Engaging community members was crucial in conducting a successful screening campaign. By identifying those villagers at high risk of developing noncommunicable diseases, early intervention was possible. Education improved awareness of the symptom-free nature of early-stage noncommunicable diseases.

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52072815

Alcohol use and burden for 195 countries and territories, 1990–2016: a systematic analysis for the Global Burden of Disease Study 2016

Summary Background Alcohol use is a leading risk factor for death and disability, but its overall association with health remains complex given the possible protective effects of moderate alcohol consumption on some conditions. With our comprehensive approach to health accounting within the Global Burden of Diseases, Injuries, and Risk Factors Study 2016, we generated improved estimates of alcohol use and alcohol-attributable deaths and disability-adjusted life-years (DALYs) for 195 locations from 1990 to 2016, for both sexes and for 5-year age groups between the ages of 15 years and 95 years and older. Methods Using 694 data sources of individual and population-level alcohol consumption, along with 592 prospective and retrospective studies on the risk of alcohol use, we produced estimates of the prevalence of current drinking, abstention, the distribution of alcohol consumption among current drinkers in standard drinks daily (defined as 10 g of pure ethyl alcohol), and alcohol-attributable deaths and DALYs. We made several methodological improvements compared with previous estimates: first, we adjusted alcohol sales estimates to take into account tourist and unrecorded consumption; second, we did a new meta-analysis of relative risks for 23 health outcomes associated with alcohol use; and third, we developed a new method to quantify the level of alcohol consumption that minimises the overall risk to individual health. Findings Globally, alcohol use was the seventh leading risk factor for both deaths and DALYs in 2016, accounting for 2·2% (95% uncertainty interval [UI] 1·5–3·0) of age-standardised female deaths and 6·8% (5·8–8·0) of age-standardised male deaths. Among the population aged 15–49 years, alcohol use was the leading risk factor globally in 2016, with 3·8% (95% UI 3·2–4·3) of female deaths and 12·2% (10·8–13·6) of male deaths attributable to alcohol use. For the population aged 15–49 years, female attributable DALYs were 2·3% (95% UI 2·0–2·6) and male attributable DALYs were 8·9% (7·8–9·9). The three leading causes of attributable deaths in this age group were tuberculosis (1·4% [95% UI 1·0–1·7] of total deaths), road injuries (1·2% [0·7–1·9]), and self-harm (1·1% [0·6–1·5]). For populations aged 50 years and older, cancers accounted for a large proportion of total alcohol-attributable deaths in 2016, constituting 27·1% (95% UI 21·2–33·3) of total alcohol-attributable female deaths and 18·9% (15·3–22·6) of male deaths. The level of alcohol consumption that minimised harm across health outcomes was zero (95% UI 0·0–0·8) standard drinks per week. Interpretation Alcohol use is a leading risk factor for global disease burden and causes substantial health loss. We found that the risk of all-cause mortality, and of cancers specifically, rises with increasing levels of consumption, and the level of consumption that minimises health loss is zero. These results suggest that alcohol control policies might need to be revised worldwide, refocusing on efforts to lower overall population-level consumption. Funding Bill & Melinda Gates Foundation.

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52095986

The Dual Immunoregulatory function of Nlrp12 in T Cell-Mediated Immune Response: Lessons from Experimental Autoimmune Encephalomyelitis

Although the etiology of multiple sclerosis (MS) remains enigmatic, the role of T cells is unquestionably central in this pathology. Immune cells respond to pathogens and danger signals via pattern-recognition receptors (PRR). Several reports implicate Nlrp12, an intracellular PRR, in the development of a mouse MS-like disease, called Experimental Autoimmune Encephalomyelitis (EAE). In this study, we used induced and spontaneous models of EAE, as well as in vitro T cell assays, to test the hypothesis that Nlrp12 inhibits Th1 response and prevents T-cell mediated autoimmunity. We found that Nlrp12 plays a protective role in induced EAE by reducing IFNγ/IL-4 ratio in lymph nodes, whereas it potentiates the development of spontaneous EAE (spEAE) in 2D2 T cell receptor (TCR) transgenic mice. Looking into the mechanism of Nlrp12 activity in T cell response, we found that it inhibits T cell proliferation and suppresses Th1 response by reducing IFNγ and IL-2 production. Following TCR activation, Nlrp12 inhibits Akt and NF-κB phosphorylation, while it has no effect on S6 phosphorylation in the mTOR pathway. In conclusion, we propose a model that can explain the dual immunoregulatory function of Nlrp12 in EAE. We also propose a model explaining the molecular mechanism of Nlrp12-dependent regulation of T cell response.

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52175065

Acute and chronic exercise in patients with heart failure with reduced ejection fraction: evidence of structural and functional plasticity and intact angiogenic signalling in skeletal muscle

KEY POINTS The vascular endothelial growth factor (VEGF) responses to acute submaximal exercise and training effects in patients with heart failure with reduced ejection fraction (HFrEF) were investigated. Six patients and six healthy matched controls performed knee-extensor exercise (KE) at 50% of maximum work rate before and after (only patients) KE training. Muscle biopsies were taken to assess skeletal muscle structure and the angiogenic response. Before training, during this submaximal KE exercise, patients with HFrEF exhibited higher leg vascular resistance and greater noradrenaline spillover. Skeletal muscle structure and VEGF response were generally not different between groups. Following training, resistance was no longer elevated and noradrenaline spillover was curtailed in the patients. Although, in the trained state, VEGF did not respond to acute exercise, capillarity was augmented. Muscle fibre cross-sectional area and percentage area of type I fibres increased and mitochondrial volume density exceeded that of controls. Structural/functional plasticity and appropriate angiogenic signalling were observed in skeletal muscle of patients with HFrEF. ABSTRACT This study examined the response to acute submaximal exercise and the effect of training in patients with heart failure with reduced ejection fraction (HFrEF). The acute angiogenic response to submaximal exercise in HFrEF after small muscle mass training is debated. The direct Fick method, with vascular pressures, was performed across the leg during knee-extensor exercise (KE) at 50% of maximum work rate (WRmax ) in patients (n = 6) and controls (n = 6) and then after KE training in patients. Muscle biopsies facilitated the assessment of skeletal muscle structure and vascular endothelial growth factor (VEGF) mRNA levels. Prior to training, HFrEF exhibited significantly higher leg vascular resistance (LVR) (≈15%) and significantly greater noradrenaline spillover (≈385%). Apart from mitochondrial volume density, which was significantly lower (≈22%) in HFrEF, initial skeletal muscle structure, including capillarity, was not different between groups. Resting VEGF mRNA levels, and the increase with exercise, was not different between patients and controls. Following training, LVR was no longer elevated and noradrenaline spillover was curtailed. Skeletal muscle capillarity increased with training, as assessed by capillary-to-fibre ratio (≈13%) and number of capillaries around a fibre (NCAF ) (≈19%). VEGF mRNA was now not significantly increased by acute exercise. Muscle fibre cross-sectional area and percentage area of type I fibres both increased significantly with training (≈18% and ≈21%, respectively), while the percentage area of type II fibres fell significantly (≈11%), and mitochondrial volume density now exceeded that of controls. These data reveal structural and functional plasticity and appropriate angiogenic signalling in skeletal muscle of HFrEF patients.

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52176296

2017 revisions of McDonald criteria shorten the time to diagnosis of multiple sclerosis in clinically isolated syndromes

To investigate the impact of the 2017 revisions of McDonald criteria on the diagnosis of multiple sclerosis (MS) in a cohort of patients with clinically isolated syndrome (CIS) and dissemination in space (DIS) of demyelinating lesions. We retrospectively analyzed 137 patients with CIS + DIS from two Italian MS centers. Application of the 2017 revisions of McDonald criteria in our cohort led to a diagnosis of MS in 82.5% of the patients who could have not been diagnosed with MS according to the previous criteria at the time of the first demyelinating event. After a follow-up of 3.8 ± 2.9 years, 85.8% of these patients eventually satisfied also the previous (2010) criteria. Application of the 2017 revisions of McDonald criteria results in an earlier diagnosis of MS in a large percentage of CIS patients destined to convert to MS.

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52180874

Efficacy of PD-1 or PD-L1 inhibitors and PD-L1 expression status in cancer: meta-analysis

OBJECTIVE To evaluate the relative efficacy of programmed cell death 1 (PD-1) or programmed cell death ligand 1 (PD-L1) inhibitors versus conventional drugs in patients with cancer that were PD-L1 positive and PD-L1 negative. DESIGN Meta-analysis of randomised controlled trials. DATA SOURCES PubMed, Embase, Cochrane database, and conference abstracts presented at the American Society of Clinical Oncology and European Society of Medical Oncology up to March 2018. REVIEW METHODS Studies of PD-1 or PD-L1 inhibitors (avelumab, atezolizumab, durvalumab, nivolumab, and pembrolizumab) that had available hazard ratios for death based on PD-L1 positivity or negativity were included. The threshold for PD-L1 positivity or negativity was that PD-L1 stained cell accounted for 1% of tumour cells, or tumour and immune cells, assayed by immunohistochemistry staining methods. RESULTS 4174 patients with advanced or metastatic cancers from eight randomised controlled trials were included in this study. Compared with conventional agents, PD-1 or PD-L1 inhibitors were associated with significantly prolonged overall survival in both patients that were PD-L1 positive (n=2254, hazard ratio 0.66, 95% confidence interval 0.59 to 0.74) and PD-L1 negative (1920, 0.80, 0.71 to 0.90). However, the efficacies of PD-1 or PD-L1 blockade treatment in patients that were PD-L1 positive and PD-L1 negative were significantly different (P=0.02 for interaction). Additionally, in both patients that were PD-L1 positive and PD-L1 negative, the long term clinical benefits from PD-1 or PD-L1 blockade were observed consistently across interventional agent, cancer histotype, method of randomisation stratification, type of immunohistochemical scoring system, drug target, type of control group, and median follow-up time. CONCLUSIONS PD-1 or PD-L1 blockade therapy is a preferable treatment option over conventional therapy for both patients that are PD-L1 positive and PD-L1 negative. This finding suggests that PD-L1 expression status alone is insufficient in determining which patients should be offered PD-1 or PD-L1 blockade therapy.

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52188256

Global cancer statistics 2018: GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185 countries.

This article provides a status report on the global burden of cancer worldwide using the GLOBOCAN 2018 estimates of cancer incidence and mortality produced by the International Agency for Research on Cancer, with a focus on geographic variability across 20 world regions. There will be an estimated 18.1 million new cancer cases (17.0 million excluding nonmelanoma skin cancer) and 9.6 million cancer deaths (9.5 million excluding nonmelanoma skin cancer) in 2018. In both sexes combined, lung cancer is the most commonly diagnosed cancer (11.6% of the total cases) and the leading cause of cancer death (18.4% of the total cancer deaths), closely followed by female breast cancer (11.6%), prostate cancer (7.1%), and colorectal cancer (6.1%) for incidence and colorectal cancer (9.2%), stomach cancer (8.2%), and liver cancer (8.2%) for mortality. Lung cancer is the most frequent cancer and the leading cause of cancer death among males, followed by prostate and colorectal cancer (for incidence) and liver and stomach cancer (for mortality). Among females, breast cancer is the most commonly diagnosed cancer and the leading cause of cancer death, followed by colorectal and lung cancer (for incidence), and vice versa (for mortality); cervical cancer ranks fourth for both incidence and mortality. The most frequently diagnosed cancer and the leading cause of cancer death, however, substantially vary across countries and within each country depending on the degree of economic development and associated social and life style factors. It is noteworthy that high-quality cancer registry data, the basis for planning and implementing evidence-based cancer control programs, are not available in most low- and middle-income countries. The Global Initiative for Cancer Registry Development is an international partnership that supports better estimation, as well as the collection and use of local data, to prioritize and evaluate national cancer control efforts. CA: A Cancer Journal for Clinicians 2018;0:1-31. © 2018 American Cancer Society.

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52805891

Gut Microbiota Is a Key Modulator of Insulin Resistance in TLR 2 Knockout Mice

Environmental factors and host genetics interact to control the gut microbiota, which may have a role in the development of obesity and insulin resistance. TLR2-deficient mice, under germ-free conditions, are protected from diet-induced insulin resistance. It is possible that the presence of gut microbiota could reverse the phenotype of an animal, inducing insulin resistance in an animal genetically determined to have increased insulin sensitivity, such as the TLR2 KO mice. In the present study, we investigated the influence of gut microbiota on metabolic parameters, glucose tolerance, insulin sensitivity, and signaling of TLR2-deficient mice. We investigated the gut microbiota (by metagenomics), the metabolic characteristics, and insulin signaling in TLR2 knockout (KO) mice in a non-germ free facility. Results showed that the loss of TLR2 in conventionalized mice results in a phenotype reminiscent of metabolic syndrome, characterized by differences in the gut microbiota, with a 3-fold increase in Firmicutes and a slight increase in Bacteroidetes compared with controls. These changes in gut microbiota were accompanied by an increase in LPS absorption, subclinical inflammation, insulin resistance, glucose intolerance, and later, obesity. In addition, this sequence of events was reproduced in WT mice by microbiota transplantation and was also reversed by antibiotics. At the molecular level the mechanism was unique, with activation of TLR4 associated with ER stress and JNK activation, but no activation of the IKKβ-IκB-NFκB pathway. Our data also showed that in TLR2 KO mice there was a reduction in regulatory T cell in visceral fat, suggesting that this modulation may also contribute to the insulin resistance of these animals. Our results emphasize the role of microbiota in the complex network of molecular and cellular interactions that link genotype to phenotype and have potential implications for common human disorders involving obesity, diabetes, and even other immunological disorders.

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52824661

TGF‐β‐mediated exosomal lnc‐MMP2‐2 regulates migration and invasion of lung cancer cells to the vasculature by promoting MMP2 expression

Previous studies indicated that transforming growth factor (TGF)-β-mediated exosomal microRNAs (miRNAs) regulate the migration and invasion of lung cancer cells; however, whether and how TGF-β-mediated exosomal long noncoding (lnc) RNAs regulate migration and invasion of lung cancer cells remains unclear. Here, coculture experiments showed that TGF-β pretreatment increased the migration and invasion potential of lung cancer cells and TGF-β pretreated A549 cells increases vascular permeability. Furthermore, we found that TGF-β-mediated exosomes, as carriers of intercellular communication, regulated lung cancer invasion, and vascular permeability. Transcriptional analysis also revealed that lnc-MMP2-2 was highly enriched in TGF-β-mediated exosomes and might function by increasing the expression of matrix metalloproteinase (MMP)2 through its enhancer activity, with ectopic expression and silencing of lnc-MMP2-2 affecting lung cancer invasion and vascular permeability. Additionally, lnc-MMP2-2 and MMP2 expression was assessed semiquantitatively, and tissue-specific correlations between lnc-MMP2-2 and MMP2 expression were evaluated. These results suggested that exosomal lnc-MMP2-2 might regulate the migration and invasion of lung cancer cells into the vasculature by promoting MMP2 expression, suggesting this lncRNA as a novel therapeutic target and predictive marker of tumor metastasis in lung cancer.

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52827184

Surviving Sepsis Campaign: International Guidelines for Management of Sepsis and Septic Shock 2016

Objective: To provide an update to “Surviving Sepsis Campaign Guidelines for Management of Sepsis and Septic Shock: 2012. ” Design: A consensus committee of 55 international experts representing 25 international organizations was convened. Nominal groups were assembled at key international meetings (for those committee members attending the conference). A formal conflict-of-interest (COI) policy was developed at the onset of the process and enforced throughout. A stand-alone meeting was held for all panel members in December 2015. Teleconferences and electronic-based discussion among subgroups and among the entire committee served as an integral part of the development. Methods: The panel consisted of five sections: hemodynamics, infection, adjunctive therapies, metabolic, and ventilation. Population, intervention, comparison, and outcomes (PICO) questions were reviewed and updated as needed, and evidence profiles were generated. Each subgroup generated a list of questions, searched for best available evidence, and then followed the principles of the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) system to assess the quality of evidence from high to very low, and to formulate recommendations as strong or weak, or best practice statement when applicable. Results: The Surviving Sepsis Guideline panel provided 93 statements on early management and resuscitation of patients with sepsis or septic shock. Overall, 32 were strong recommendations, 39 were weak recommendations, and 18 were best-practice statements. No recommendation was provided for four questions. Conclusions: Substantial agreement exists among a large cohort of international experts regarding many strong recommendations for the best care of patients with sepsis. Although a significant number of aspects of care have relatively weak support, evidence-based recommendations regarding the acute management of sepsis and septic shock are the foundation of improved outcomes for these critically ill patients with high mortality.

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52850476

Mitochondrial genome variation and the origin of modern humans.

The analysis of mitochondrial DNA (mtDNA) has been a potent tool in our understanding of human evolution, owing to characteristics such as high copy number, apparent lack of recombination, high substitution rate and maternal mode of inheritance. However, almost all studies of human evolution based on mtDNA sequencing have been confined to the control region, which constitutes less than 7% of the mitochondrial genome. These studies are complicated by the extreme variation in substitution rate between sites, and the consequence of parallel mutations causing difficulties in the estimation of genetic distance and making phylogenetic inferences questionable. Most comprehensive studies of the human mitochondrial molecule have been carried out through restriction-fragment length polymorphism analysis, providing data that are ill suited to estimations of mutation rate and therefore the timing of evolutionary events. Here, to improve the information obtained from the mitochondrial molecule for studies of human evolution, we describe the global mtDNA diversity in humans based on analyses of the complete mtDNA sequence of 53 humans of diverse origins. Our mtDNA data, in comparison with those of a parallel study of the Xq13.3 region in the same individuals, provide a concurrent view on human evolution with respect to the age of modern humans.

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52865789

Deficiency of Interleukin-15 Confers Resistance to Obesity by Diminishing Inflammation and Enhancing the Thermogenic Function of Adipose Tissues

OBJECTIVE IL-15 is an inflammatory cytokine secreted by many cell types. IL-15 is also produced during physical exercise by skeletal muscle and has been reported to reduce weight gain in mice. Contrarily, our findings on IL-15 knockout (KO) mice indicate that IL-15 promotes obesity. The aim of this study is to investigate the mechanisms underlying the pro-obesity role of IL-15 in adipose tissues. METHODS Control and IL-15 KO mice were maintained on high fat diet (HFD) or normal control diet. After 16 weeks, body weight, adipose tissue and skeletal mass, serum lipid levels and gene/protein expression in the adipose tissues were evaluated. The effect of IL-15 on thermogenesis and oxygen consumption was also studied in primary cultures of adipocytes differentiated from mouse preadipocyte and human stem cells. RESULTS Our results show that IL-15 deficiency prevents diet-induced weight gain and accumulation of lipids in visceral and subcutaneous white and brown adipose tissues. Gene expression analysis also revealed elevated expression of genes associated with adaptive thermogenesis in the brown and subcutaneous adipose tissues of IL-15 KO mice. Accordingly, oxygen consumption was increased in the brown adipocytes from IL-15 KO mice. In addition, IL-15 KO mice showed decreased expression of pro-inflammatory mediators in their adipose tissues. CONCLUSIONS Absence of IL-15 results in decreased accumulation of fat in the white adipose tissues and increased lipid utilization via adaptive thermogenesis. IL-15 also promotes inflammation in adipose tissues that could sustain chronic inflammation leading to obesity-associated metabolic syndrome.

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52868579

Chromatin signatures of pluripotent cell lines.

Epigenetic genome modifications are thought to be important for specifying the lineage and developmental stage of cells within a multicellular organism. Here, we show that the epigenetic profile of pluripotent embryonic stem cells (ES) is distinct from that of embryonic carcinoma cells, haematopoietic stem cells (HSC) and their differentiated progeny. Silent, lineage-specific genes replicated earlier in pluripotent cells than in tissue-specific stem cells or differentiated cells and had unexpectedly high levels of acetylated H3K9 and methylated H3K4. Unusually, in ES cells these markers of open chromatin were also combined with H3K27 trimethylation at some non-expressed genes. Thus, pluripotency of ES cells is characterized by a specific epigenetic profile where lineage-specific genes may be accessible but, if so, carry repressive H3K27 trimethylation modifications. H3K27 methylation is functionally important for preventing expression of these genes in ES cells as premature expression occurs in embryonic ectoderm development (Eed)-deficient ES cells. Our data suggest that lineage-specific genes are primed for expression in ES cells but are held in check by opposing chromatin modifications.

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52873726

Regulation of Hippo pathway transcription factor TEAD by p38 MAPK-induced cytoplasmic translocation

The Hippo pathway controls organ size and tissue homeostasis, with deregulation leading to cancer. The core Hippo components in mammals are composed of the upstream serine/threonine kinases Mst1/2, MAPK4Ks and Lats1/2. Inactivation of these upstream kinases leads to dephosphorylation, stabilization, nuclear translocation and thus activation of the major functional transducers of the Hippo pathway, YAP and its paralogue TAZ. YAP/TAZ are transcription co-activators that regulate gene expression primarily through interaction with the TEA domain DNA-binding family of transcription factors (TEAD). The current paradigm for regulation of this pathway centres on phosphorylation-dependent nucleocytoplasmic shuttling of YAP/TAZ through a complex network of upstream components. However, unlike other transcription factors, such as SMAD, NF-κB, NFAT and STAT, the regulation of TEAD nucleocytoplasmic shuttling has been largely overlooked. In the present study, we show that environmental stress promotes TEAD cytoplasmic translocation via p38 MAPK in a Hippo-independent manner. Importantly, stress-induced TEAD inhibition predominates YAP-activating signals and selectively suppresses YAP-driven cancer cell growth. Our data reveal a mechanism governing TEAD nucleocytoplasmic shuttling and show that TEAD localization is a critical determinant of Hippo signalling output.

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52874170

How do I perform a lumbar puncture and analyze the results to diagnose bacterial meningitis?

CONTEXT Diagnostic lumbar punctures (LPs), commonly used to rule out meningitis, are associated with adverse events. OBJECTIVE To systematically review the evidence about diagnostic LP techniques that may decrease the risk of adverse events and the evidence about test accuracy of cerebrospinal fluid (CSF) analysis in adult patients with suspected bacterial meningitis. DATA SOURCES We searched the Cochrane Library, MEDLINE (using Ovid and PubMed) from 1966 to January 2006 and EMBASE from 1980 to January 2006 without language restrictions to identify relevant studies and identified others from the bibliographies of retrieved articles. STUDY SELECTION We included randomized trials of patients aged 18 years or older undergoing interventions to facilitate a successful diagnostic LP or to potentially reduce adverse events. Studies assessing the accuracy of biochemical analysis of the CSF for possible bacterial meningitis were also identified. DATA EXTRACTION Two investigators independently appraised study quality and extracted relevant data. For studies of the LP technique, data on the intervention and the outcome were extracted. For studies of the laboratory diagnosis of bacterial meningitis, data on the reference standard and test accuracy were extracted. DATA SYNTHESIS We found 15 randomized trials. A random-effects model was used for quantitative synthesis. Five studies of 587 patients compared atraumatic needles with standard needles and found a nonsignificant decrease in the odds of headache with an atraumatic needle (absolute risk reduction [ARR], 12.3%; 95% confidence interval [CI], -1.72% to 26.2%). Reinsertion of the stylet before needle removal decreased the risk of headache (ARR, 11.3%; 95% CI, 6.50%-16.2%). The combined results from 4 studies of 717 patients showed a nonsignificant decrease in headache in patients who were mobilized after LP (ARR, 2.9%; 95% CI, -3.4 to 9.3%). Four studies on the accuracy of biochemical analysis of CSF in patients with suspected meningitis met inclusion criteria. A CSF-blood glucose ratio of 0.4 or less (likelihood ratio [LR], 18; 95% CI, 12-27]), CSF white blood cell count of 500/muL or higher (LR, 15; 95% CI, 10-22), and CSF lactate level of 31.53 mg/dL or more (> or =3.5 mmol/L; LR, 21; 95% CI, 14-32) accurately diagnosed bacterial meningitis. CONCLUSIONS These data suggest that small-gauge, atraumatic needles may decrease the risk of headache after diagnostic LP. Reinsertion of the stylet before needle removal should occur and patients do not require bed rest after the procedure. Future research should focus on evaluating interventions to optimize the success of a diagnostic LP and to enhance training in procedural skills.

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52887689

Guidelines for the use and interpretation of assays for monitoring autophagy.

In 2008 we published the first set of guidelines for standardizing research in autophagy. Since then, research on this topic has continued to accelerate, and many new scientists have entered the field. Our knowledge base and relevant new technologies have also been expanding. Accordingly, it is important to update these guidelines for monitoring autophagy in different organisms. Various reviews have described the range of assays that have been used for this purpose. Nevertheless, there continues to be confusion regarding acceptable methods to measure autophagy, especially in multicellular eukaryotes. A key point that needs to be emphasized is that there is a difference between measurements that monitor the numbers or volume of autophagic elements (e.g., autophagosomes or autolysosomes) at any stage of the autophagic process vs. those that measure flux through the autophagy pathway (i.e., the complete process); thus, a block in macroautophagy that results in autophagosome accumulation needs to be differentiated from stimuli that result in increased autophagic activity, defined as increased autophagy induction coupled with increased delivery to, and degradation within, lysosomes (in most higher eukaryotes and some protists such as Dictyostelium) or the vacuole (in plants and fungi). In other words, it is especially important that investigators new to the field understand that the appearance of more autophagosomes does not necessarily equate with more autophagy. In fact, in many cases, autophagosomes accumulate because of a block in trafficking to lysosomes without a concomitant change in autophagosome biogenesis, whereas an increase in autolysosomes may reflect a reduction in degradative activity. Here, we present a set of guidelines for the selection and interpretation of methods for use by investigators who aim to examine macroautophagy and related processes, as well as for reviewers who need to provide realistic and reasonable critiques of papers that are focused on these processes. These guidelines are not meant to be a formulaic set of rules, because the appropriate assays depend in part on the question being asked and the system being used. In addition, we emphasize that no individual assay is guaranteed to be the most appropriate one in every situation, and we strongly recommend the use of multiple assays to monitor autophagy. In these guidelines, we consider these various methods of assessing autophagy and what information can, or cannot, be obtained from them. Finally, by discussing the merits and limits of particular autophagy assays, we hope to encourage technical innovation in the field.

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52893592

Subversion of Systemic Glucose Metabolism as a Mechanism to Support the Growth of Leukemia Cells.

From an organismal perspective, cancer cell populations can be considered analogous to parasites that compete with the host for essential systemic resources such as glucose. Here, we employed leukemia models and human leukemia samples to document a form of adaptive homeostasis, where malignant cells alter systemic physiology through impairment of both host insulin sensitivity and insulin secretion to provide tumors with increased glucose. Mechanistically, tumor cells induce high-level production of IGFBP1 from adipose tissue to mediate insulin sensitivity. Further, leukemia-induced gut dysbiosis, serotonin loss, and incretin inactivation combine to suppress insulin secretion. Importantly, attenuated disease progression and prolonged survival are achieved through disruption of the leukemia-induced adaptive homeostasis. Our studies provide a paradigm for systemic management of leukemic disease.

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52925737

Tumor-derived exosomes induce N2 polarization of neutrophils to promote gastric cancer cell migration

BACKGROUND Exosomes are extracellular vesicles that mediate cellular communication in health and diseases. Neutrophils could be polarized to a pro-tumor phenotype by tumor. The function of tumor-derived exosomes in neutrophil regulation remains unclear. METHODS We investigated the effects of gastric cancer cell-derived exosomes (GC-Ex) on the pro-tumor activation of neutrophils and elucidated the underlying mechanisms. RESULTS GC-Ex prolonged neutrophil survival and induced expression of inflammatory factors in neutrophils. GC-Ex-activated neutrophils, in turn, promoted gastric cancer cell migration. GC-Ex transported high mobility group box-1 (HMGB1) that activated NF-κB pathway through interaction with TLR4, resulting in an increased autophagic response in neutrophils. Blocking HMGB1/TLR4 interaction, NF-κB pathway, and autophagy reversed GC-Ex-induced neutrophil activation. Silencing HMGB1 in gastric cancer cells confirmed HMGB1 as a key factor for GC-Ex-mediated neutrophil activation. Furthermore, HMGB1 expression was upregulated in gastric cancer tissues. Increased HMGB1 expression was associated with poor prognosis in patients with gastric cancer. Finally, gastric cancer tissue-derived exosomes acted similarly as exosomes derived from gastric cancer cell lines in neutrophil activation. CONCLUSION We demonstrate that gastric cancer cell-derived exosomes induce autophagy and pro-tumor activation of neutrophils via HMGB1/TLR4/NF-κB signaling, which provides new insights into mechanisms for neutrophil regulation in cancer and sheds lights on the multifaceted role of exosomes in reshaping tumor microenvironment.

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52944377

ROS-induced R loops trigger a transcription-coupled but BRCA1/2-independent homologous recombination pathway through CSB

Actively transcribed regions of the genome are protected by transcription-coupled DNA repair mechanisms, including transcription-coupled homologous recombination (TC-HR). Here we used reactive oxygen species (ROS) to induce and characterize TC-HR at a transcribed locus in human cells. As canonical HR, TC-HR requires RAD51. However, the localization of RAD51 to damage sites during TC-HR does not require BRCA1 and BRCA2, but relies on RAD52 and Cockayne Syndrome Protein B (CSB). During TC-HR, RAD52 is recruited by CSB through an acidic domain. CSB in turn is recruited by R loops, which are strongly induced by ROS in transcribed regions. Notably, CSB displays a strong affinity for DNA:RNA hybrids in vitro, suggesting that it is a sensor of ROS-induced R loops. Thus, TC-HR is triggered by R loops, initiated by CSB, and carried out by the CSB-RAD52-RAD51 axis, establishing a BRCA1/2-independent alternative HR pathway protecting the transcribed genome.

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53033275

Autophagy and its potent modulators from phytochemicals in cancer treatment

Autophagy is a ubiquitous catabolic process by which damaged or harmful intracellular components are delivered to the lysosomes for self-digestion and recycling. It is critical in cancer treatment. Therapy-induced autophagy predominantly acts as a pro-survival mechanism, but progressive autophagy can lead to non-apoptotic cell death, also known as autophagic cell death. Plants or herbs contain various natural compounds that are widely used in the treatment of many types of malignancies. Emerging evidence indicates that phytochemicals targeting the autophagic pathway are promising agents for cancer treatment. However, these compounds play different roles in autophagy. In this review, we discussed the role of autophagy in cancer development and therapy, and focussed on elucidating the anti-cancer activities of autophagic modulators, especially phytochemicals. Notably, we described a novel premise that the dynamic role of phytochemicals should be evaluated in regulation of autophagy in cancer.

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53211308

Exosomal miR-99a-5p is elevated in sera of ovarian cancer patients and promotes cancer cell invasion by increasing fibronectin and vitronectin expression in neighboring peritoneal mesothelial cells

BACKGROUND microRNAs (miRNAs) stably exist in circulating blood and are encapsulated in extracellular vesicles such as exosomes. The aims of this study were to identify which exosomal miRNAs are highly produced from epithelial ovarian cancer (EOC) cells, to analyze whether serum miRNA can be used to discriminate patients with EOC from healthy volunteers, and to investigate the functional role of exosomal miRNAs in ovarian cancer progression. METHODS Exosomes were collected from the culture media of serous ovarian cancer cell lines, namely TYK-nu and HeyA8 cells. An exosomal miRNA microarray revealed that several miRNAs including miR-99a-5p were specifically elevated in EOC-derived exosomes. Expression levels of serum miR-99a-5p in 62 patients with EOC, 26 patients with benign ovarian tumors, and 20 healthy volunteers were determined by miRNA quantitative reverse transcription-polymerase chain reaction. To investigate the role of exosomal miR-99a-5p in peritoneal dissemination, neighboring human peritoneal mesothelial cells (HPMCs) were treated with EOC-derived exosomes and then expression levels of miR-99a-5p were examined. Furthermore, mimics of miR-99a-5p were transfected into HPMCs and the effect of miR-99a-5p on cancer invasion was analyzed using a 3D culture model. Proteomic analysis with the tandem mass tag method was performed on HPMCs transfected with miR-99a-5p and then potential target genes of miR-99a-5p were examined. RESULTS The serum miR-99a-5p levels were significantly increased in patients with EOC, compared with those in benign tumor patients and healthy volunteers (1.7-fold and 2.8-fold, respectively). A receiver operating characteristic curve analysis showed with a cut-off of 1.41 showed sensitivity and specificity of 0.85 and 0.75, respectively, for detecting EOC (area under the curve = 0.88). Serum miR-99a-5p expression levels were significantly decreased after EOC surgeries (1.8 to 1.3, p = 0.002), indicating that miR-99a-5p reflects tumor burden. Treatment with EOC-derived exosomes significantly increased miR-99a-5p expression in HPMCs. HPMCs transfected with miR-99a-5p promoted ovarian cancer invasion and exhibited increased expression levels of fibronectin and vitronectin. CONCLUSIONS Serum miR-99a-5p is significantly elevated in ovarian cancer patients. Exosomal miR-99a-5p from EOC cells promotes cell invasion by affecting HPMCs through fibronectin and vitronectin upregulation and may serve as a target for inhibiting ovarian cancer progression.

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53302393

The Pfam protein families database.

Pfam is a widely used database of protein families, currently containing more than 13,000 manually curated protein families as of release 26.0. Pfam is available via servers in the UK (http://pfam.sanger.ac.uk/), the USA (http://pfam.janelia.org/) and Sweden (http://pfam.sbc.su.se/). Here, we report on changes that have occurred since our 2010 NAR paper (release 24.0). Over the last 2 years, we have generated 1840 new families and increased coverage of the UniProt Knowledgebase (UniProtKB) to nearly 80%. Notably, we have taken the step of opening up the annotation of our families to the Wikipedia community, by linking Pfam families to relevant Wikipedia pages and encouraging the Pfam and Wikipedia communities to improve and expand those pages. We continue to improve the Pfam website and add new visualizations, such as the 'sunburst' representation of taxonomic distribution of families. In this work we additionally address two topics that will be of particular interest to the Pfam community. First, we explain the definition and use of family-specific, manually curated gathering thresholds. Second, we discuss some of the features of domains of unknown function (also known as DUFs), which constitute a rapidly growing class of families within Pfam.

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53779698

Exercise as a therapeutic approach to improve blood pressure in patients with peripheral arterial disease: current literature and future directions.

INTRODUCTION Patients with symptomatic peripheral artery disease (PAD) exhibit reduced functional capacity and increased mortality due to cardiovascular disease. Although exercise has been a cornerstone for clinical treatment to improve walking capacity in patients with symptomatic PAD, its effects on cardiovascular parameters have been poorly explored. Areas covered: This review examines the role of exercise in improving blood pressure in patients with symptomatic PAD and summarizes the current evidence on the acute (single bout of exercise) and chronic effects of walking and resistance exercise on blood pressure and its determinants. Expert commentary: In patients with symptomatic PAD, exercise promotes acute and chronic reductions in blood pressure. These effects were observed particularly after walking and resistance exercise. Future studies are necessary to investigate the effects of other exercise modalities, especially non-painful exercises, on cardiovascular function in patients with symptomatic PAD.

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54482327

Morin Exhibits Anti-Inflammatory Effects on IL-1β-Stimulated Human Osteoarthritis Chondrocytes by Activating the Nrf2 Signaling Pathway

Background/Aims: Osteoarthritis (OA) is a multifactorial disease that is associated with inflammation in joints. The purpose of the present study was to investigate the anti-inflammatory activity and mechanism of morin on human osteoarthritis chondrocytes stimulated by IL-1β. Methods: The levels of NO and PGE2 were measured by the Griess method and ELISA. The levels of MMP1, MMP3, and MMP13 were also measured by ELISA. Results: The results revealed that IL-1β significantly increased the production of NO, PGE2, MMP1, MMP3, and MMP13. Additionally, the increases were significantly attenuated by treatment with morin. Furthermore, IL-1β-induced NF-κB activation was suppressed by morin. In addition, the expression of Nrf2 and HO-1 were increased by morin and knockdown of Nrf2 could prevent the anti-inflammatory effects of morin. Conclusion: In conclusion, this study suggested that morin attenuated IL-1β-induced inflammation by activating the Nrf2 signaling pathway.

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54490092

Impact of blood pressure variability on cardiovascular events in elderly patients with hypertension.

Blood pressure variability is one of the characteristic features of hypertension in the elderly. However, its clinical significance remains to be determined. We therefore examined the impact of blood pressure variability on the development of cardiovascular events in elderly hypertensive patients. A total of 106 consecutive hypertensive patients aged more than 60 years old (mean age, 73.9 +/- 8.1 years old; male, 54%), all of whom underwent 24-h ambulatory blood pressure monitoring, were followed up (median, 34 months; range, 3-60 months). During the follow-up period, 39 cardiovascular events were observed, including 14 cases of cerebral infarction and 7 cases of acute myocardial infarction. The coefficient of variation (CV) of 24-h systolic blood pressure (SBP) values was used as an index of blood pressure variability. The patients showed a mean CV value of 10.6%, and were divided into two groups according to this mean value as a cut-off point: a high CV group (n = 46) and a low CV group (n = 60). Although baseline clinical characteristics were similar in the two groups, Kaplan-Meier plots for event-free survival revealed that the rate of cardiovascular events was significantly higher in high CV group than in low CV group (p < 0.05). Cox's proportional hazards analysis showed that increased blood pressure variability (a high CV value of 24-h SBP) was an independent predictive variable for cardiovascular events. The CV value of daytime SBP and the SD value of both 24-h SBP and daytime SBP also had positive correlations with the onset of cardiovascular events. These results suggest that increased blood pressure variability may be an independent risk factor for cardiovascular events in elderly hypertensive patients.

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54561384

Reprogramming committed murine blood cells to induced hematopoietic stem cells with defined factors.

Hematopoietic stem cells (HSCs) sustain blood formation throughout life and are the functional units of bone marrow transplantation. We show that transient expression of six transcription factors Run1t1, Hlf, Lmo2, Prdm5, Pbx1, and Zfp37 imparts multilineage transplantation potential onto otherwise committed lymphoid and myeloid progenitors and myeloid effector cells. Inclusion of Mycn and Meis1 and use of polycistronic viruses increase reprogramming efficacy. The reprogrammed cells, designated induced-HSCs (iHSCs), possess clonal multilineage differentiation potential, reconstitute stem/progenitor compartments, and are serially transplantable. Single-cell analysis revealed that iHSCs derived under optimal conditions exhibit a gene expression profile that is highly similar to endogenous HSCs. These findings demonstrate that expression of a set of defined factors is sufficient to activate the gene networks governing HSC functional identity in committed blood cells. Our results raise the prospect that blood cell reprogramming may be a strategy for derivation of transplantable stem cells for clinical application.

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54561709

Genetic variability in a frozen batch of MCF-7 cells invisible in routine authentication affecting cell function

Common recommendations for cell line authentication, annotation and quality control fall short addressing genetic heterogeneity. Within the Human Toxome Project, we demonstrate that there can be marked cellular and phenotypic heterogeneity in a single batch of the human breast adenocarcinoma cell line MCF-7 obtained directly from a cell bank that are invisible with the usual cell authentication by short tandem repeat (STR) markers. STR profiling just fulfills the purpose of authentication testing, which is to detect significant cross-contamination and cell line misidentification. Heterogeneity needs to be examined using additional methods. This heterogeneity can have serious consequences for reproducibility of experiments as shown by morphology, estrogenic growth dose-response, whole genome gene expression and untargeted mass-spectroscopy metabolomics for MCF-7 cells. Using Comparative Genomic Hybridization (CGH), differences were traced back to genetic heterogeneity already in the cells from the original frozen vials from the same ATCC lot, however, STR markers did not differ from ATCC reference for any sample. These findings underscore the need for additional quality assurance in Good Cell Culture Practice and cell characterization, especially using other methods such as CGH to reveal possible genomic heterogeneity and genetic drifts within cell lines.

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54562433

The Mammalian-Specific Protein Armcx1 Regulates Mitochondrial Transport during Axon Regeneration

Mitochondrial transport is crucial for neuronal and axonal physiology. However, whether and how it impacts neuronal injury responses, such as neuronal survival and axon regeneration, remain largely unknown. In an established mouse model with robust axon regeneration, we show that Armcx1, a mammalian-specific gene encoding a mitochondria-localized protein, is upregulated after axotomy in this high regeneration condition. Armcx1 overexpression enhances mitochondrial transport in adult retinal ganglion cells (RGCs). Importantly, Armcx1 also promotes both neuronal survival and axon regeneration after injury, and these effects depend on its mitochondrial localization. Furthermore, Armcx1 knockdown undermines both neuronal survival and axon regeneration in the high regenerative capacity model, further supporting a key role of Armcx1 in regulating neuronal injury responses in the adult central nervous system (CNS). Our findings suggest that Armcx1 controls mitochondrial transport during neuronal repair.

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55040297

A diversity of beta diversities: straightening up a concept gone awry. Part 1. Defining beta diversity as a function of alpha and gamma diversity

The term beta diversity has been used to refer to a wide variety of phenomena. Although all of these encompass some kind of compositional heterogeneity between places, many are not related to each other in any predictable way. The present two-part review aims to put the different phenomena that have been called beta diversity into a common conceptual framework, and to explain what each of them measures. In this first part, the focus is on defining a beta component of diversity. This involves deciding what diversity is and how the observed total or gamma diversity (g) is partitioned into alpha (a) and beta (b) components. Several different definitions of ‘‘beta diversity’’ that result from these decisions have been used in the ecological literature. True beta diversity is obtained when the total effective number of species in a dataset (true gamma diversity g) is multiplicatively partitioned into the effective number of species per compositionally distinct

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55128127

A cross-cultural study of wine consumers with respect to health benefits of wine

The objective of the present study was to examine consumer preference and consumption behaviour with respect to the health benefits of wine for two contextually and culturally diverse consumer groups, namely Koreans and Australians. Participants were required to be wine consumers over the age of 18. Responses were collected by means of an online questionnaire. The results indicated that perceived health benefits of red wine were higher in the Australian sample than the Korean sample. Similarly, Australian consumers had more health related wine knowledge than Korean consumers. Red wine was the preferred wine style for both Korean and Australian consumers; however, the proportion of preference for red wine was significantly higher in the Korean sample. With respect to the expenditure on wine products, AUD$11–$19 was the preferred price range for both groups. The results also indicated that health-oriented wine is more attractive to Korean consumers than Australian consumers. In relation to gender, Korean women preferred red wine as much as men, but Australian women consumed significantly more white wine than men. Such findings inform winemakers and wine marketers on the appropriateness of weighting wine production and marketing to health aspects in order to maximize consumer

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56391045

DIASPORA BONDS: TAPPING THE DIASPORA DURING DIFFICULT TIMES

India and Israel have raised over US$35 billion by tapping into the wealth of their diaspora communities. These diaspora bonds represent a stable and cheap source of external finance, often when countries lost access to international capital markets. For diaspora investors, these bonds offer the opportunity to help their country of origin while also providing an investment opportunity. The potential for diaspora bonds is significant for many countries with large diasporas abroad. However, diaspora bond issuance from countries with weak governance and high sovereign risk may require support for institutional capacity building and credit enhancement from multilateral or bilateral agencies. Haiti, for instance, could raise several hundred million dollars by issuing diaspora bonds provided a guarantee structure is created to build trust in the country's public institutions.

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56486733

Peroxisome Proliferator Activated Receptor gamma (PPARγ) Agonist Rosiglitazone Ameliorate Airway Inflammation by Inhibiting Toll-Like Receptor 2 (TLR2)/Nod-Like Receptor with Pyrin Domain Containing 3 (NLRP3) Inflammatory Corpuscle Activation in Asthmatic Mice

BACKGROUND The purpose of this study was to explore the function and mechanism of peroxisome proliferator activated receptor agonist (PPARγ) in the toll-like receptor 2 (TLR2)/nod-like receptor with pyrin domain containing 3 (NLRP3) inflammatory corpuscle pathway of asthmatic mice. MATERIAL AND METHODS Eighteen female mice (C57) were randomly divided into 4 groups: the control group, the asthma model group challenged by ovalbumin (OVA), the rosiglitazone group, and the PPARγ agonist rosiglitazone treatment group. The infiltration of peribronchial inflammatory cells as well as the proliferation and mucus secretion of bronchial epithelial goblet cells were observed by hematoxylin and eosin and periodic acid-Schiff staining. Western blots were employed to detect the expression levels of TLR2, PPARγ, nuclear factor-kappa B (NF-kappaB), NLRP3, and ASC [apoptosis-associated speck-like protein containing C-terminal caspase recruitment domain [CARD]). RESULTS The number of inflammatory cells and eosinophils, and the levels of OVAs IgE, interleukin-4 (IL-4), and IL-13 were significantly higher in the C57 asthma group compared to the C57 control group and the treatment group (P<0.05). The infiltration of peribronchiolar inflammatory cells, wall thickening, goblet cell hyperplasia, and mucus secretion in the treatment group were all significantly decreased compared to those in the asthma group. PPARg expression in the treatment group was significantly higher compared to the asthma group and the control group (P<0.05). The protein expression levels of TLR2, NF-kappaB, NLRP3, and ASC were significantly lower compared to the asthma group but were higher compared to the control group (P<0.05). CONCLUSIONS PPARγ rosiglitazone ameliorates airway inflammation by inhibiting NF-kappaB expression in asthmatic mice, and further inhibits the activation of TLR2/NLRP3 inflammatory corpuscles.

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0.07122802734375, "10": 0.04193115234375, "27641": 0.158447265625, "64829": 0.1197509765625, "90": 0.00894927978515625, "1831": 0.12286376953125, "203932": 0.219482421875, "173702": 0.17236328125, "1916": 0.014251708984375, "933": 0.014404296875, "45792": 0.034454345703125}

56528795

Omi/HtrA2 Participates in Age-Related Autophagic Deficiency in Rat Liver

Liver is a vital organ with many important functions, and the maintenance of normal hepatic function is necessary for health. As an essential mechanism for maintaining cellular homeostasis, autophagy plays an important role in ensuring normal organ function. Studies have indicated that the degeneration of hepatic function is associated with autophagic deficiency in aging liver. However, the underlying mechanisms still remain unclear. The serine protease Omi/HtrA2 belongs to the HtrA family and promotes apoptosis through either the caspase-dependent or caspase-independent pathway. Mice lacking Omi/HtrA2 exhibited progeria symptoms (premature aging), which were similar to the characteristics of autophagic insufficiency. In this study, we demonstrated that both the protein level of Omi/HtrA2 in liver and hepatic function were reduced as rats aged, and there was a positive correlation between them. Furthermore, several autophagy-related proteins (LC3II/I, Beclin-1 and LAMP2) in rat liver were decreased significantly with the increasing of age. Finally, inhibition of Omi/HtrA2 resulted in reduced autophagy and hepatic dysfunction. In conclusion, these results suggest that Omi/HtrA2 participates in age-related autophagic deficiency in rat liver. This study may offer a novel insight into the mechanism involved in liver aging.

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56893404

Macrosomia and Hyperinsulinaemic Hypoglycaemia in Patients with Heterozygous Mutations in the HNF4A Gene

Background Macrosomia is associated with considerable neonatal and maternal morbidity. Factors that predict macrosomia are poorly understood. The increased rate of macrosomia in the offspring of pregnant women with diabetes and in congenital hyperinsulinaemia is mediated by increased foetal insulin secretion. We assessed the in utero and neonatal role of two key regulators of pancreatic insulin secretion by studying birthweight and the incidence of neonatal hypoglycaemia in patients with heterozygous mutations in the maturity-onset diabetes of the young (MODY) genes HNF4A (encoding HNF-4α) and HNF1A/TCF1 (encoding HNF-1α), and the effect of pancreatic deletion of Hnf4a on foetal and neonatal insulin secretion in mice.

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57121667

ART adherence clubs: A long-term retention strategy for clinically stable patients receiving antiretroviral therapy

The ART-adherence club model described here provides patient-friendly access to antiretroviral therapy (ART) for clinically stable patients. It reduces the burden that stable patients place on healthcare facilities, increasing clinical human resources for new patients, and those clinically unstable and at risk of failing treatment. In the model, 30 patients are allocated to an ART club. The group meets either at a facility or community venue for less than an hour every 2 months. Group meetings are facilitated by a lay club facilitator who provides a quick clinical assessment, referral where necessary, and dispenses pre-packed ART. From January 2011 to December 2012, after adoption for phased rollout by the Western Cape Government, more than 600 ART clubs were established in Cape Town, providing ART care to over 16 000 patients. This extensive, rapid rollout demonstrates active buy-in from patients and facility staff. South Africa should consider a similar model for national rollout.

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57574395

Exercise-linked FNDC5/irisin rescues synaptic plasticity and memory defects in Alzheimer’s models

Defective brain hormonal signaling has been associated with Alzheimer's disease (AD), a disorder characterized by synapse and memory failure. Irisin is an exercise-induced myokine released on cleavage of the membrane-bound precursor protein fibronectin type III domain-containing protein 5 (FNDC5), also expressed in the hippocampus. Here we show that FNDC5/irisin levels are reduced in AD hippocampi and cerebrospinal fluid, and in experimental AD models. Knockdown of brain FNDC5/irisin impairs long-term potentiation and novel object recognition memory in mice. Conversely, boosting brain levels of FNDC5/irisin rescues synaptic plasticity and memory in AD mouse models. Peripheral overexpression of FNDC5/irisin rescues memory impairment, whereas blockade of either peripheral or brain FNDC5/irisin attenuates the neuroprotective actions of physical exercise on synaptic plasticity and memory in AD mice. By showing that FNDC5/irisin is an important mediator of the beneficial effects of exercise in AD models, our findings place FNDC5/irisin as a novel agent capable of opposing synapse failure and memory impairment in AD.

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57762078

Influence of antidepressant therapy on sick leave in primary care: ADAS, a comparative observational study

Background Compared to other European countries, Sweden's yearly sick leave expenditures are moderate. Common mental disorders (CMD) are important causes of sick leave, affecting 10-15% of the adult population. A Swedish register based study indicates that antidepressant therapy for patients on long-term sick leave for CMD leads to longer sick leave and higher frequency of non-time-limited sickness compensation as compared to psychotherapy, work oriented rehabilitation, and other therapies. Aim To verify if patients on antidepressant therapy and on long-term sick leave for depression, anxiety and stress-related mental disorders have a longer sick leave than patients treated with other therapies. Method Prospective, observational study at 28 primary health care centers in the Region Västra Götaland, Sweden, including 192 patients on sick leave for CMD. Outcome measures were gross and net sick leave days. Interpretation There were no significant differences in sick leave days (gross or net) due to CMD when comparing the patients treated and not treated with antidepressants during the 12 month observation period. The groups differed at baseline only concerning frequency of exhaustion disorder, with a higher frequency of exhaustion disorder in the group without antidepressants. Analysis of other possible factors associated with shorter or longer sick leave only showed associations with the patient's own perception of possibility of returning to work in near and distant future. An important factor associated with longer sick leave was the patient's own perception of possibility of return to present workplace. As CMD are important causes of sick leave and sick leave costs, this factor should be highlighted in future research on the rehabilitation process.

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57783564

CDX2 inhibits the proliferation and tumor formation of colon cancer cells by suppressing Wnt/β-catenin signaling via transactivation of GSK-3β and Axin2 expression

Caudal-related homeobox transcription factor 2 (CDX2), an intestine-specific nuclear transcription factor, has been strongly implicated in the tumourigenesis of various human cancers. However, the functional role of CDX2 in the development and progression of colorectal cancer (CRC) is not well known. In this study, CDX2 knockdown in colon cancer cells promoted cell proliferation in vitro, accelerated tumor formation in vivo, and induced a cell cycle transition from G0/G1 to S phase, whereas CDX2 overexpression inhibited cell proliferation. TOP/FOP-Flash reporter assay showed that CDX2 knockdown or CDX2 overexpression significantly increased or decreased Wnt signaling activity. Western blot assay showed that downstream targets of Wnt signaling, including β-catenin, cyclin D1 and c-myc, were up-regulated or down-regulated in CDX2-knockdown or CDX2-overexpressing colon cancer cells. In addition, suppression of Wnt signaling by XAV-939 led to a marked suppression of the cell proliferation enhanced by CDX2 knockdown, whereas activation of this signaling by CHIR-99021 significantly enhanced the cell proliferation inhibited by CDX2 overexpression. Dual-luciferase reporter and quantitative chromatin immunoprecipitation (qChIP) assays further confirmed that CDX2 transcriptionally activates glycogen synthase kinase-3β (GSK-3β) and axis inhibition protein 2 (Axin2) expression by directly binding to the promoter of GSK-3β and the upstream enhancer of Axin2. In conclusion, these results indicated that CDX2 inhibits the proliferation and tumor formation of colon cancer cells by suppressing Wnt/β-catenin signaling.

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58006489

Prostaglandin E2 mediates sensory nerve regulation of bone homeostasis

Whether sensory nerve can sense bone density or metabolic activity to control bone homeostasis is unknown. Here we found prostaglandin E2 (PGE2) secreted by osteoblastic cells activates PGE2 receptor 4 (EP4) in sensory nerves to regulate bone formation by inhibiting sympathetic activity through the central nervous system. PGE2 secreted by osteoblasts increases when bone density decreases as demonstrated in osteoporotic animal models. Ablation of sensory nerves erodes the skeletal integrity. Specifically, knockout of the EP4 gene in the sensory nerves or cyclooxygenase-2 (COX2) in the osteoblastic cells significantly reduces bone volume in adult mice. Sympathetic tone is increased in sensory denervation models, and propranolol, a β2-adrenergic antagonist, rescues bone loss. Furthermore, injection of SW033291, a small molecule to increase PGE2 level locally, significantly boostes bone formation, whereas the effect is obstructed in EP4 knockout mice. Thus, we show that PGE2 mediates sensory nerve to control bone homeostasis and promote regeneration.

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58050905

The Bone and Joint Decade 2000-2010.

The World Health Organisation has declared the period 2000 to 2010 the Bone and Joint Decade. This is indeed timely and appropriate. Hundreds of millions of people in the world today are beset with a host of disabilities caused by trauma, ageing and degeneration and other affections of the musculo-skeletal system. With the state of art of orthopaedic surgery and rheumatology, sufferers of bone and joint disabilities have benefited a great deal from advances in pharmacology, newer techniques of imaging, surgery and man-made materials to replace diseased or damaged bone and cartilage. However, man-made materials, being non-living, are subject to wear and tear and loosening in the host bone. As we advance into the Bone and Joint Decade, further improvement in the treatment of bone and joint diseases lies in more basic cartilage and bone research. The Human Genome Project has provided us with a better understanding of disease genes and the possibility of gene manipulation to prevent and treat specific diseases. Cartilage cells culture and transplant are already a reality. Tissue engineering, i.e. growing cells in three-dimensional substrates of collagen or synthetic biodegradable polymers, started in the 1980s, will in future be used to replace damaged bone and cartilage parts with living and bone and cartilaginous tissues, respectively. The first steps have been taken; more research needs to be done. And it is not unreasonable to expect a significant breakthrough in the treatment of bone and joint diseases at the end of this decade. Ann Acad Med Singapore 2002; 31:621-2

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58564850

Prevalence of late-life depression and gap in mental health service use across European regions.

Background We aimed to determine the prevalence and gap in use of mental health services for late-life depression in four European regions (Western Europe, Scandinavia, Southern Europe and Central and Eastern Europe) and explore socio-demographic, social and health-related factors associated with it. Methods We conducted a cross-sectional study based on data from the Survey on Health, Ageing and Retirement in Europe. Participants were a population-based sample of 28 796 persons (53% women, mean age 74 years old) residing in Europe. Mental health service use was estimated using information about the diagnosis or treatment for depression. Results The prevalence of late-life depression was 29% in the whole sample and was highest in Southern Europe (35%), followed by Central and Eastern Europe (32%), Western Europe (26%) and lowest in Scandinavia (17%). Factors that had the strongest association with depression were total number of chronic diseases, pain, limitations in instrumental activities of daily living, grip strength and cognitive impairment. The gap in mental health service use was 79%. Conclusions We suggest that interventions to decrease the burden of late-life depression should be targeted at individuals that are affected by chronic somatic comorbidities and are limited in mental and physical functioning. Promotion of help-seeking of older adults, de-stigmatization of mental illness and education of general practitioners could help decrease the gap in mental health service utilization.

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59453688

Impedance and Interface Properties of Al/Methyl-Red/p-InP Solar Cell

An Al/methyl-red/p-InP solar cell was fabricated via solution-processing method and was characterized by using current-voltage (I-V) and capacitance-voltage-frequency (C-V-f) measurements at room temperature. From dark I-V characteristics, the values of ideality factor and barrier height of the device were calculated as 1.11 eV and 2.02, respectively. It has been seen that the device exhibited a good photovoltaic behavior with a maximum open circuit voltage of 0.38 V and short-circuit current of 2.8 nA under only 200 lx light intensity. The barrier height and acceptor carrier concentration values for the Al/methyl-red/p-InP devices were extracted as 1.27 eV and from linear region of its characteristics, respectively. The difference between (I-V) and (C-V) for Al/methyl-red/p-InP device was attributed the different nature of the I-V and C-V measurements. Also, the energy distribution curves of the interface states and their time constants were obtained from the experimental conductance properties of the Al/methyl-red/p-InP structure at room temperature. The interface state densities and their relaxation times of the device have ranged from and s at (1.11-) eV to and s at (0.79-) eV, respectively. It was seen that both the interface state density and the relaxation time of the interface states have decreased with bias voltage from experimental results.

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60206680

R: A Language for Data Analysis and Graphics

Abstract In this article we discuss our experience designing and implementing a statistical computing language. In developing this new language, we sought to combine what we felt were useful features from two existing computer languages. We feel that the new language provides advantages in the areas of portability, computational efficiency, memory management, and scoping.

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60515890

The Mouse Brain in Stereotaxic Coordinates

" The Mouse Brain in Stereotaxic Coordinates" is the most widely used and cited atlas of the mouse brain in print. It provides researchers and students with both accurate stereotaxic coordinates for laboratory use, and detailed delineations and indexing of structures for reference. The accompanying DVD provides drawings of brains structures that can be used as templates for making figures for publication. The 3rd edition is both a major revision and an expansion of previous editions. Delineations and photographs in the horizontal plane of section now complement the coronal and sagittal series, and all the tissue sections are now shown in high resolution digital color photography. The photographs of the sections and the intermediate sections are also provided on the accompanying DVD in high-resolution JP 2000 format. The delineations of structures have been revised, and naming conventions made consistent with Paxinos and Watson's "Rat Brain in Stereotaxic Coordinates, 6th Edition". The 3rd edition of this atlas is now in more practical 14"x11" format for convenient lab use. This edition is in full color throughout. It includes a CD of all plates and diagrams, as well as Adobe Illustrator files of the diagrams, and a variety of additional useful material. Coronal and sagittal diagrams are completely reworked and updated. Rhombomeric borders are included in sagittal figures, for the first time in mammals. Microscopic plates are scanned with a new method in much higher quality.

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61050894

ggplot2: Elegant Graphics for Data Analysis

ggplot2: Elegant Graphics for Data Analysis is a new addition to the UseR! series by Springer, probably the fastest expanding source of resources for computational statistics at the current moment. The books in this series are all linked with R, either presenting a new package developed by the own authors of the book or describing how to applying statistical techniques with the different packages available in R. ggplot2 is an implementation in R of The Grammar of Graphics (Wilkinson 2005) a systematic approach to the specification of statistical graphics that was introduced in a book previously reviewed in the Journal of Statistical Software by Cox (2007). This implementation has been developed by Hadley Wickham, who is also the author of the book reviewed here.

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63858430

Multiple Imputation For Nonresponse In Surveys

multiple imputation for nonresponse in surveys is available in our book collection an online access to it is set as public so you can download it instantly. Our book servers hosts in multiple locations, allowing you to get the most less latency time to download any of our books like this one. Merely said, the multiple imputation for nonresponse in surveys is universally compatible with any devices to read.

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67045088

Inhibition of the dipeptidyl peptidase DPP4 (CD26) reveals IL-33-dependent eosinophil-mediated control of tumor growth

Post-translational modification of chemokines mediated by the dipeptidyl peptidase DPP4 (CD26) has been shown to negatively regulate lymphocyte trafficking, and its inhibition enhances T cell migration and tumor immunity by preserving functional chemokine CXCL10. By extending those initial findings to pre-clinical models of hepatocellular carcinoma and breast cancer, we discovered a distinct mechanism by which inhibition of DPP4 improves anti-tumor responses. Administration of the DPP4 inhibitor sitagliptin resulted in higher concentrations of the chemokine CCL11 and increased migration of eosinophils into solid tumors. Enhanced tumor control was preserved in mice lacking lymphocytes and was ablated after depletion of eosinophils or treatment with degranulation inhibitors. We further demonstrated that tumor-cell expression of the alarmin IL-33 was necessary and sufficient for eosinophil-mediated anti-tumor responses and that this mechanism contributed to the efficacy of checkpoint-inhibitor therapy. These findings provide insight into IL-33- and eosinophil-mediated tumor control, revealed when endogenous mechanisms of DPP4 immunoregulation are inhibited. Eosinophils have been described mainly in allergy settings but are increasingly appreciated as being involved in other aspects of immunity. Albert and colleagues use a clinically approved inhibitor of the dipeptidyl peptidase DPP4 to facilitate the recruitment of eosinophils to mouse tumors, where they are essential in tumor destruction.

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67787658

Cycling Quiescence in Temozolomide Resistant Glioblastoma Cells Is Partly Explained by microRNA-93 and -193-Mediated Decrease of Cyclin D

Glioblastoma multiforme (GBM) is a fatal malignancy of the central nervous system, commonly associated with chemoresistance. The alkylating agent Temozolomide (TMZ) is the front-line chemotherapeutic agent and has undergone intense studies on resistance. These studies reported on mismatch repair gene upregulation, ABC-targeted drug efflux, and cell cycle alterations. The mechanism by which TMZ induces cell cycle arrest has not been well-established. TMZ-resistant GBM cells have been linked to microRNA (miRNA) and exosomes. A cell cycle miRNA array identified distinct miRNAs only in exosomes from TMZ-resistant GBM cell lines and primary spheres. We narrowed the miRs to miR-93 and -193 and showed in computational analyses that they could target Cyclin D1. Since Cyclin D1 is a major regulator of cell cycle progression, we performed cause-effect studies and showed a blunting effects of miR-93 and -193 in Cyclin D1 expression. These two miRs also decreased cell cycling quiescence and induced resistance to TMZ. Taken together, our data provide a mechanism by which GBM cells can exhibit TMZ-induced resistance through miRNA targeting of Cyclin D1. The data provide a number of therapeutic approaches to reverse chemoresistance at the miRNA, exosomal and cell cycle points.

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68317730

Longitudinal changes in maternal corin and mid-regional proatrial natriuretic peptide in women at risk of pre-eclampsia

Objectives Corin, an atrial natriuretic peptide-converting enzyme, has been found to promote trophoblast invasion and spiral artery remodeling. Reduced maternal plasma atrial natriuretic peptide (ANP) levels and elevated corin levels have been reported in pregnancies complicated by PE. The aim of this study was to investigate longitudinal changes in maternal plasma levels of corin and midregional proatrial natriuretic peptide (MR-PANP) in pregnancies that develop preeclampsia (PE) and gestational hypertension (GH). Methods Nested case control study drawn from a larger prospective longitudinal study in singleton pregnancies identified by screening at 11 + 0 − 13 + 6 weeks’ gestation as being at high risk for PE. Blood samples were taken every four weeks until delivery. Values were compared in pregnancies that developed preterm-PE (requiring delivery before 37 weeks), term-PE, GH, and those that remained normotensive. The distribution of maternal plasma corin and PANP were made Gaussian after log 10 transformation. Analysis of repeated measures with multilevel mixed-effects linear model (fixed effects and random effects) was performed. The multilevel model was compared to one-level model by the likelihood radio (LR) test. Results A total of 471 samples were analyzed from 122 women, including 85 that remained normotensive, 12 that developed GH, 13 term-PE and 12 preterm-PE. In the normotensive group, log10corin levels were associated with gestational age ( p p = 0.001). In the GH and term-PE groups, corin did not differ significantly from the normotensive group ( p = 0.64 and p = 0.16, respectively). Compared to the normotensive group, MR-PANP levels were significantly higher in the pregnancies that developed preterm-PE and GH ( p = 0.046 and p = 0.019, respectively), but not term-PE ( p = 0.47). Conclusions Maternal plasma corin and MR-PANP could potentially be useful biomarkers for the prediction of preterm-PE. Disclosures A. Khalil: Research Support Recipient; Commercial Interests: USCOM, Roche, Alere, NICOM, Q-fFN; Speaker: Roche.

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69045262

Children's Exercise Physiology

The reorganized and newly revised "Children's Exercise Physiology, Second Edition, " presents the most up-to-date research, methodology, and approaches related to children's physiologic responses to exercise. The book examines not only the current major issues that separate children from adults, but also the underlying mechanisms of these differences. Readers will learn what makes children different from adults physiologically--such as size, biochemical differences, neuromuscular differences, and lack of sexual and hormonal maturation--and the reasons for these differences. Those involved with young athletes, disease management, and health promotion will gain valuable insight into the physiologic determinants of exercise performance. Children's exercise physiology is a fast-moving field. In the eight years since the first edition of this book was published, much new information has surfaced. This streamlined new edition contains 13 instead of 15 chapters, an introduction, and updated features: -Chapter objectives, discussion questions and research directions, and a glossary of terms promote learning.-A reorganized table of contents improves the flow from chapter to chapter.-A new final chapter covers the role of the central nervous system. Also included is in-depth discussion of the determinants of aerobic fitness and VO2 kinetics and the significance of maximal aerobic power in children. With improved chapters on thermoregulation and metabolic and endocrinologic responses to exercise, you can be confident you're getting the latest information with "Children's Exercise Physiology, Second Edition. "

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70439309

Cost-effectiveness in health and medicine

1. Cost-Effectiveness Analysis as a Guide to Resource Allocation in Health: Roles and Limitations 2. Theoretical Foundations of Cost-Effectiveness Analysis 3. Framing and Designing the Cost-Effectiveness Analysis 4. Identifying and Valuing Outcomes 5. Assessing the Effectiveness of Health Interventions 6. Estimating Costs in Cost-Effectiveness Analysis 7. Time Preference 8. Reflecting Uncertainty in Cost-Effectiveness Analysis 9. Reporting Cost-Effectiveness Studies and Results Appendix A: Summary of Recommendations for the Reference Case Appendix B: Cost-Effectiveness of Strategies to Prevent Neural Tube Defects Appendix C: The Cost-Effectiveness of Dietary and Pharmacologic Therapy for Cholesterol Reduction in Adults

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70455704

Weight gain during pregnancy: reexamining the guidelines.

As women of childbearing age have become heavier, the trade-off between maternal and child health created by variation in gestational weight gain has become more difficult to reconcile. Weight Gain During Pregnancy responds to the need for a reexamination of the 1990 Institute of Medicine guidelines for weight gain during pregnancy. It builds on the conceptual framework that underscored the 1990 weight gain guidelines and addresses the need to update them through a comprehensive review of the literature and independent analyses of existing databases. The book explores relationships between weight gain during pregnancy and a variety of factors (e.g., the mother's weight and height before pregnancy) and places this in the context of the health of the infant and the mother, presenting specific, updated target ranges for weight gain during pregnancy and guidelines for proper measurement. New features of this book include a specific range of recommended gain for obese women. Weight Gain During Pregnancy is intended to assist practitioners who care for women of childbearing age, policy makers, educators, researchers, and the pregnant women themselves to understand the role of gestational weight gain and to provide them with the tools needed to promote optimal pregnancy outcomes.

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70516463

To err is human. Building a safer health system

Human beings, make errors Healthcare Services is a complex industry prone to accidents. The IOM Report [1] points out that some systems are more prone to accidents than others. When a system fails there are often multiple faults. In healthcare,human errors are the greatest contributors to accidents,however when human error is to blame it often depends upon failures within the system. These failures exists in the system before the error occurs, the same as with latent errors which are difficult to identify since they may be hidden in computers or within the various managerial layers. Most of the errors can be prevented by designing systems that make it hard for people to do the wrong thing and easy for people to do the right thing. In healthcare, this means designing processes that are able to ensure that patients are safe from accidental injury. As healthcare and the system that delivers it become more complex, the opportunities for errors abound. The IOM report “To Err is Human” proposes an approach for reducing medical errors and improving patient safety. The environment within which this occurs has a critical influence on quality. This influence may contain two dimensions; the first consists of the domain of quality which includes the practice that is consistent with current medical knowledge. The second dimension consists of forces in the external environment that can drive quality improvement in the delivery system. Although the risk of dying as a result of a medical error, far surpasses the risk of dying in an airline accident, public attention has been more focused on improving safety in the airline industry than in healthcare systems. Because of the absence of standardized nomenclature, it is important to define what an error is and what is an adverse event, the IOM Report defines them in the following way: “An error is the failure of a planned action to be completed as intended or the use of a wrong plan to achieve an aim. ” An adverse event is an injury caused by medical management rather than the underlying condition of the patient. An adverse event attributable to error is a “preventable adverse event”.

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70633421

Excess risk of lymphomas, leukemia and myeloma in patients with rheumatoid arthritis

The incidence of malignant neoplasms among 11 483 male and 34 618 female individuals with rheumatoid arthritis was studied using two separate nationwide data registers covering the whole Finnish population: the Social Insurance Institution9s Population Data Register, which includes information on medication for certain chronic diseases, and the Finnish Cancer Registry, with data on all cancer patients diagnosed in Finland. The follow-up comprised a total of 213 911 person years. The total incidence of all malignant neoplasms was higher in males and on the level expected in females. The expected number of cases of leukemia, lymphomas, Hodgkin9s disease and myeloma in both sexes was 59·6 as compared with the 130 cases observed. This difference is statistically highly significant (p

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70704988

Advanced Human Nutrition

Advanced Human Nutrition, Second Edition provides an in-depth overview of the human body and details why nutrients are important from a biochemical, physiological, and molecular perspective. Figures help illustrate the content and bring the meaning to life to enhance the reader's understanding. Complex pathways, for example, are presented in a student-friendly fashion, as are diagrams that illustrate metabolism and the molecular functions of nutrients. Multiple elements within the text, such as "Here's Where You Have Been" and "Here's Where You Are Going," help drive home key points from the chapter and provide real-world examples to bring the content to life. Topics covered include: * cell aging, damage and repair systems * human nutrition, digestion, and absorption with relation to organs, exocrine and endocrine functions, histology, and absorptive activities * microflora and satiety/hunger mechanisms * macronutrients during exercise and the role of liquids and sports drinks * prevalent diseases in western cultures such as coronary heart disease, cancer, and osteoporosis An Instructor's Manual, PowerPoint Presentations, and a TestBank are available are free downloads.

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70895396

The Endothelium: Modulator of Cardiovascular Function

Introduction. Methods To Study Endothelium-Dependent Responses. Endothelium-Derived Relaxing Factor. Physiological Actions. Other Relaxing Substances Released By the Endothelium. Production of Contracting Agents. Local Regulation of Endothelium-Dependent Responses. Neurohumoral Regulation. Heterogeneity and Chronic Modulation. Disease. Therapeutic Implications. References. Subject Index.

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71341302

Vegetarian vs. conventional diabetic diet – A 1-year follow-up

Abstract Objective Our previous 6-month, randomized study demonstrated the beneficial effect of a vegetarian (V) compared to a conventional diet (C) with similar caloric restriction on cardiovascular risk factors for patients with type 2 diabetes (T2D), namely increased insulin sensitivity, reduced body weight, reduced volume of visceral and subcutaneous fat, decreased LDL-cholesterol and improved oxidative stress markers and chosen adipokines. We conducted post-trial monitoring to determine whether the improved outcomes persisted 1 year after the end of the study. Methods 62 subjects with T2D who completed the study were asked to come for a 1-year follow-up to measure weight, waist circumference, HbA1c and blood lipids. No attempts were made to maintain their previously assigned diets. Results 44 patients (71%) attended the post-trial monitoring. Hypoglycemic agents were increased by 14% in V and by 26% in C; insulin therapy was introduced in 5% in V and in 13% in C one year after the end of the intervention. Neither weight nor waist circumference changed significantly in either group. HbA1c increased ( p ≤ 0.05) similarly in both groups (+0.49 ± 1.04% in V vs. +0.42 ± 0.8% in C). Blood lipids did not change in either group. Conclusion One year after the end of the intervention, the positive effects of a vegetarian diet on cardiovascular risk factors compared to a conventional diet were partially maintained.

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71625969

Alcohol, wine, and health

Abstract Background: For the past 20 years numerous epidemiological studies have correlated the consumption of alcohol and a variety of disease states: overall mortality, arteriosclerotic vascular diseases, hypertension, cancers, peptic ulcer, respiratory infections, gall stones, kidney stones, age-related macular degeneration, bone density, and cognitive function. Methods: A review of these articles reveals that each of these studies has compared the outcome of individuals at various levels of alcohol consumption with that of abstainers. Results: Each analysis has identified a U-shaped or J-shaped curve of reduced relative risk for a given disease state compared with abstainers. A clear definition of consumption in moderation becomes evident: for men it should not exceed 2 to 4 drinks per day, and for women it should not exceed 1 to 2 drinks per day. Conclusions: Alcohol by itself has favorable effects on the level of high-density lipoprotein cholesterol, and inhibition of platelet aggregation. Wine, particularly red wine, has high levels of phenolic compounds that favorably influence multiple biochemical systems, such as increased high-density lipoprotein cholesterol, antioxidant activity, decreased platelet aggregation and endothelial adhesion, suppression of cancer cell growth, and promotion of nitric oxide production.

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71628189

Contraceptive practices of women requesting termination of pregnancy : A study from China

Abstract In order to develop a program for prevention of unwanted pregnancies, we conducted a survey of contraceptive practices and reasons for contraceptive failures of 1520 women seeking abortion at eight large hospitals in Zheng Zhou City, Henan Province, P.R. China, during the period from March 1996 to May 1996. The most frequent cause of the unplanned pregnancy was contraceptive failure (71.9%); 61.7% (938) of these current pregnancies were potentially predictable by virtue of nonuse of contraception (427) or by recognition of contraceptive failures (511). Among the contraceptive failures, the proportion of condom mishaps was the highest (29.7%), next was IUD failures (23.5%), then rhythm miscalculation (15.9%). Most of abortion seekers (77.1%) used some contraceptive methods previously. But, only 19.7% of them used a contraceptive method at the first sexual intercourse. Among 1520 abortion seekers, 57.6% had used condoms previously; 50.9% of the condom users had at least one instance of condom mishap. The rhythm method had been used by 31.7% of abortion seekers previously; 59.1% of the rhythm users had at least one instance of rhythm failure. Of the 16.8% of abortion seekers who had used pills, 58.0% of them had pill failures. Among condom and pill failures, most of them (46.4% condom users and 56.0% pill users) belonged to the user failure category (poor complicance). Of those seeking abortion, 56.4% had experienced at least one instance of previous abortion; 5.3% had experienced previous abortions at least two times. Emergency contraception had been utilized by only 10 subjects prior to this current pregnancy.

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72180760

Oncologists' perceptions of the effects of cancer patients' companions on physician-patient interactions

To determine physicians' perceptions of the effects that the companions of cancer patients have on physician-patient communication, semistructured interviews were conducted with 12 oncologists (6 medical, 4 surgical, and 2 radiation) from a total population of 21 oncologists. The physicians estimated that threefourths of their patients brought companions with them to consultations and said that these consultations were more complex for the physician. The behaviors of the companions varied from domination to passive note taking, and the companions who were young professional men or older women who accompanied their husbands were the most assertive and asked the most questions. All possible coalitions were observed during medical visits. The physicians perceived that companions and patients often had different agendas and noted differences in the companions' behaviors according to their gender and whether they lived in rural or urban areas.

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72372925

Wolff's Headache and Other Head Pain.

There has never been a book on headache that came close to that of the late Harold Wolff. The second edition was published 10 years ago; it was and is a masterpiece of writing, an exhaustive yet engrossing delineation of Wolff's long study and understanding of headache. The new edition, revised by Dalessio, serves to bring certain aspects of headache up to date, most of them having to do with drug therapy. The emphasis on total therapy rather than simply drug therapy has been preserved, however. Dalessio has altered slightly the form of the book, although the "new chapters" on cluster headache and trigeminal neuralgia are merely transplants from other sections of the original. Migraine, the main part of the book, has been reshaped, with some anecdotal portions removed, but little has been added. It is of interest that nothing in the section on observations of methysergide (UML-491 in Wolff's

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72580164

Ansichten von Hausärzten zur Versorgung von unheilbar kranken Patienten am Lebensende - Ergebnisse einer Befragung in Niedersachsen

Background: Family doctors play an important role in the health care for terminal ill and patients. The current level of palliative care in Germany is strongly criticised, however, empirical data is scare, particularly with respect to family doctors. Methods: Therefore, the attitudes of family doctors (sample: n= 257) in four representative regions in Lower Saxony were studied by using semi-structured telephone interviews. This was part of a health system researchers’ expert report. Results: 71doctors could be interviewed (28%). On the average, they cared for four palliative patients with cancer diseases and eight palliative patients with other diseases than cancer at that time. Many of the doctors were available for their patients around the clock, particularly in the final phase. The main area for improvement was considered to be the psychosocial support – rather than pain therapy, which is usually focussed. Furthermore, a considerable openness for the establishment of new palliative care structures was shown. Conclusion: Family doctors are highly motivated for palliative care and open for improvements. In the process, the diversity of opinion among professions and disciplines about the current situation and the further development of palliative care should be respected and considered.

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72933407

Novel Risk Factors for Systemic Atherosclerosis: A Comparison of C-Reactive Protein, Fibrinogen, Homocysteine, Lipoprotein(a), and Standard Cholesterol Screening as Predictors of Peripheral Arterial Disease

ContextSeveral novel risk factors for atherosclerosis have recently been proposed, but few comparative data exist to guide clinical use of these emerging biomarkers. ObjectiveTo compare the predictive value of 11 lipid and nonlipid biomarkers as risk factors for development of symptomatic peripheral arterial disease (PAD).Design, Setting, and ParticipantsNested case-control study using plasma samples collected at baseline from a prospective cohort of 14 916 initially healthy US male physicians aged 40 to 84 years, of whom 140 subsequently developed symptomatic PAD (cases); 140 age- and smoking status–matched men who remained free of vascular disease during an average 9-year follow-up period were randomly selected as controls. Main Outcome MeasureIncident PAD, as determined by baseline total cholesterol, high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), total cholesterol–HDL-C ratio, triglycerides, homocysteine, C-reactive protein (CRP), lipoprotein(a), fibrinogen, and apolipoproteins (apo) A-I and B-100.ResultsIn univariate analyses, plasma levels of total cholesterol (P<.001), LDL-C (P = .001), triglycerides (P = .001), apo B-100 (P = .001), fibrinogen (P = .02), CRP (P = .006), and the total cholesterol–HDL-C ratio (P<.001) were all significantly higher at baseline among men who subsequently developed PAD compared with those who did not, while levels of HDL-C (P = .009) and apo A-I (P = .05) were lower. Nonsignificant baseline elevations of lipoprotein(a) (P = .40) and homocysteine (P = .90) were observed. In multivariable analyses, the total cholesterol–HDL-C ratio was the strongest lipid predictor of risk (relative risk [RR] for those in the highest vs lowest quartile, 3.9; 95% confidence interval [CI], 1.7-8.6), while CRP was the strongest nonlipid predictor (RR for the highest vs lowest quartile, 2.8; 95% CI, 1.3-5.9). In assessing joint effects, addition of CRP to standard lipid screening significantly improved risk prediction models based on lipid screening alone (P<.001).ConclusionsOf 11 atherothrombotic biomarkers assessed at baseline, the total cholesterol–HDL-C ratio and CRP were the strongest independent predictors of development of peripheral arterial disease. C-reactive protein provided additive prognostic information over standard lipid measures.

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73136607

Assessment of older people: Self-maintaining and instrumental activities of daily living.

THE use of formal devices for assessing function is becoming standard in agencies serving the elderly. In the Gerontological Society's recent contract study on functional assessment (Howell, 1968), a large assortment of rating scales, checklists, and other techniques in use in applied settings was easily assembled. The present state of the trade seems to be one in which each investigator or practitioner feels an inner compusion to make his own scale and to cry that other existent scales cannot possibly fit his own setting. The authors join this company in presenting two scales first standardized on their own population (Lawton, 1969). They take some comfort, however, in the fact that one scale, the Physical Self-Maintenance Scale (PSMS), is largely a scale developed and used by other investigators (Lowenthal, 1964), which was adapted for use in our own institution. The second of the scales, the Instrumental Activities of Daily Living Scale (IADL), taps a level of functioning heretofore inadequately represented in attempts to assess everyday functional competence. Both of the scales have been tested further for their usefulness in a variety of types of institutions and other facilities serving community-resident older people. Before describing in detail the behavior measured by these two scales, we shall briefly describe the schema of competence into which these behaviors fit (Lawton, 1969). Human behavior is viewed as varying in the degree of complexity required for functioning in a variety of tasks. The lowest level is called life maintenance, followed by the successively more complex levels of func-

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73323408

Diabetes in pregnancy: management of diabetes and its complications from preconception to the postnatal period (NG3)

In February 2015 the National Institute for Health and Care Excellence (NICE) published new guidance (NG3) on the management of diabetes in pregnancy. Care teams need to be aware of this guidance and implement its recommendations. These include preconception care with target HbA1c 48 mmol/mol. Women at risk of gestational diabetes mellitus (GDM) should have a 75 g oral glucose tolerance test (OGTT). Diagnostic criteria for GDM have changed to fasting glucose of 5.6 mmol/L or above or 2 hour glucose of 7.8 mmol/L or above. Glycaemic targets in all diabetic pregnancies have changed to fasting glucose below 5.3 mmol/L (4–5.2 mmol/L if on insulin) and 1 hour postprandial glucose below 7.8 mmol/L if these can be achieved safely. Continuous glucose monitoring and insulin pump therapy should not be used routinely but can be used if glycaemic control is problematic. Capillary ketone testing should be routine for women with type 1 diabetes when hyperglycaemic and for all women with diabetes including, GDM when acutely unwell. More flexibility is offered around recommended delivery timing: 37+0 weeks to 38+6 weeks for women with types 1 and 2 diabetes; prior to 40+6 in GDM (and earlier if complications arise). Postnatal testing following GSM should be by fasting glucose (not OGTT) at 6–13 weeks post partum. Testing later than this can use HbA1c. Introducing these changes will have resource implications, including a likely increase in the number of women diagnosed with GDM.

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73473433

Mental health difficulties across childhood and mental health service use: findings from a longitudinal population-based study.

BACKGROUND Over the past 20 years the prevalence of child and adolescent mental disorders in high-income countries has not changed despite increased investment in mental health services. Insufficient contact with mental health services may be a contributing factor; however, it is not known what proportion of children have sufficient contact with health professionals to allow delivery of treatment meeting minimal clinical practice guidelines, or how long children experience symptoms prior to receiving treatment. AimsTo investigate the level of mental healthcare received by Australian children from age 4 years to 14 years. METHOD Trajectories of mental health symptoms were mapped using the Strengths and Difficulties Questionnaire. Health professional attendances and psychotropic medications dispensed were identified from linked national Medicare Benefits Schedule (MBS) and Pharmaceutical Benefits Scheme records. RESULTS Four trajectories of mental health symptoms were identified (low, high-decreasing, moderate-increasing and high-increasing). Most children with mental health symptoms had few MBS mental health attendances, and only a minority received care meeting study criteria for minimally adequate treatment. Children in the high-increasing and moderate-increasing trajectories were more likely to access care, yet there was no evidence of improvement in symptoms. CONCLUSIONS It is important that children and adolescents with mental health problems receive treatment that meets minimal practice guidelines. Further research is needed to identify the quality of care currently provided to children with mental health difficulties and how clinicians can be best funded and supported to provide care meeting minimal practice guidelines. Declaration of interestsNone.

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74137632

Rembrandt Scholz

This paper examines the potential impact of changes in medical care on changing population health in Lithuania, Hungary and Romania, with west Germany included for comparison. We used the concept of deaths from certain causes that should not occur in the presence of timely and effective health care (amenable mortality) and calculated the contribution of changes in mortality from these conditions to changes in life expectancy between birth and age 75 [e (0-75)] for the periods 1980/81 to 1988 and 1992 to 1997. Temporary life expectancy improved consistently in west Germany (men: 2.7 years, women: 1.6 years). In contrast, gains were relatively small in the other countries, except among Hungarian women, who gained 1.3 years. Romanian men lost 1.3 years. In the 1980s, falling infant mortality made a substantial contribution to improvements in temporary life expectancy in all countries, of about a quarter to half a year. Of this, more than half can be attributed to amenable conditions. At older ages, falling amenable mortality contributed about 40% among those aged over 40 in Germany and, to a lesser extent, Hungary, while causing a loss of life expectancy in Romania. In the 1990s, improvements in infant mortality continued to make substantial contributions to life expectancy in Lithuania and Hungary but had little impact in either Germany or Romania. Among adults, improvements in amenable mortality continued to benefit Hungarians and west Germans. In Lithuania, up to two-thirds of the gain in temporary life expectancy were attributable to falling mortality from ischaemic heart disease whereas medical care otherwise seems to have had a negative impact. Romanian men and women experienced increases in amenable mortality that contributed up to a half of the overall loss of life expectancy. Our findings suggest that during the last 20 years changes in medical care had considerable impact, positively as well as negatively, on changing mortality in selected central and eastern European countries.

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74701974

The Women's Interagency HIV Study

The Women's Interagency HIV Study comprises the largest U.S. cohort to date of human immunodeficiency virus (HIV)-seropositive women (N = 2,058) with a comparison cohort of seronegative women (N = 568). The methodology, training, and quality assurance activities employed are described. The study pop

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75636923

Prevalence of the Metabolic Syndrome Among Us Adults: Findings From the Third National Health and Nutrition Examination Survey

Metabolic syndrome is diagnosed when three or more of the following criteria are met: abdominal obesity (waist circumference more than 102 cm in men and 88 cm in women); hypertriglyceridemia of 150 mg/dl or above; a high-density lipoprotein (HDL) cholesterol level less than 40 mg/dl in men or 50 mg/dl in women; blood pressure of 130/85 mm Hg or higher; or fasting glucose of at least 110 mg/dl. Individuals with metabolic syndrome are likelier than others to develop diabetes and cardiovascular disease and have increased mortality from all causes (and from cardiovascular disease in particular). The investigators attempted to determine the prevalence of the syndrome in the United States by analyzing data on 8814 men and women 20 years of age or older who took part in the Third National Health and Nutrition Examination Survey in the years 1988 to 1994. This is a cross-sectional health survey of a sample of the noninstitutionalized civilian American population. The overall age-adjusted prevalence of metabolic syndrome was 23.7%. The prevalence rose from 6.7% in persons 20 to 29 years of age to 42% in those aged 70 years and more. There was virtually no gender-related difference in prevalence rates for the combined racial groups. Metabolic syndrome was most prevalent in Mexican Americans and least prevalent in whites, African Americans, and "others. " Among both African Americans and Mexican Americans, women had higher prevalence rates than men. Extrapolating from age-specific prevalence rates and US census counts from the year 2000, 47 million US residents have metabolic syndrome. Considering its prevalence, it seems important to estimate the direct medical costs of metabolic syndrome. In the great majority of cases the critical causes are improper nutrition and insufficient physical activity, emphasizing the importance of controlling obesity and encouraging physical activity in the United States.

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76415938

Baseline cytology, human papillomavirus testing, and risk for cervical neoplasia: A 10-year cohort analysis

As more is learned about the development of cervical cancer, the value of annual Pap smear screening for all women is being questioned. This study was conducted to investigate whether women at higher risk for the development of cervical cancer could be identified by testing for the presence of human papillomavirus (HPV) in the cervical smear. These women could be followed annually, and the interval between screening Pap smears for women at lower risk could be increased. Study participants were women enrolled in the Kaiser Permanente healthcare plan in Portland, Oregon, who underwent annual Pap smear screening between April 1989, and November 1990. More than 20,000 women (20,810 of 23,702) had satisfactory cervical smears with sufficient samples for HPV testing, which was conducted using a polymerase chain reaction-based method with MYO9/11 primers. Most women (83.6%) had at least one follow-up smear during the study period; however, women with atypical squamous cells (ASC) or worse had more smears than women with normal results (mean, 4.4 vs. 3.3). Follow-up was conducted more or less annually for a total period of 122 months. HPV results were not used in deciding patient management. Ninety-six percent of the 20,810 baseline Pap smears were diagnosed as negative (N = 20,156). Thirteen percent of these patients tested positive for HPV. The baseline smears of 654 of the 20,810 women (3.1%) were classified as ASC or worse. Of these 654 smears, 417 (63.8%) were positive for HPV. One hundred seventy-eight women had a cytologic diagnosis of a low-grade squamous intraepithelial lesion or worse; of these, 143 (80.3%) tested positive for HPV. During the 10 years of follow-up, 171 patients developed cervical intraepithelial neoplasia (CIN) 3 or cervical cancer. The baseline smear was normal in 112 of these women and ASC or worse in 59 (34.5%). Only half (49.2%) of the 58 patients diagnosed within the first 45 months of follow-up had an abnormal baseline smear. During this first 45 months, 7.85% of the women whose initial Pap test was at least ASC were diagnosed with CIN 3 or cancer. The cumulative incidence at 10 years of follow-up was 10.2%. Sixty of the 171 women with CIN 3 or cervical cancer had a negative baseline HPV test. Of the 118 women who were diagnosed during the first 45 months of follow-up, 89 (79.4%) were HPV positive initially. The cumulative incidence of CIN 3 or cancer among the group with a positive baseline HPV test was 6.92% over 10 years but only 1.73% at 45 months. The risk of developing CIN 3 or cancer remained elevated throughout the study in those women with a positive baseline HPV test. The predictive ability of the baseline Pap smear diminished as the follow-up interval increased. Fifteen percent of the patients (N = 3216) had a positive Pap smear, a positive HPV test, or both at the initial examination. One hundred twenty-three (71.9%) were among the 171 women who developed CIN 3 or cancer. Eighty-six percent (102 of 123) of the patients who were diagnosed within the first 45 months were positive with at least one of the screening studies. The cumulative incidence over 45 months for women who had positive HPV testing and/or abnormal Pap smear results was 4.54%. Women with negative results in both screening tests had a cumulative risk of 0.16% for the same period. At 10 years the cumulative risk incidence for these two groups was 6.83% and 0.79%, respectively, yielding a negative predictive value of 99.1% for combined testing.

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76463821

Preconception Care and the Risk of Congenital Anomalies in the Offspring of Women With Diabetes Mellitus: A Meta-Analysis

Preconception care (PCC) and strict periconceptional glycemic control are both used to minimize the risk of congenital birth defects in offspring of women with type 1 or type 2 diabetes mellitus (DM). These malformations are ascribed in large measure to poor periconceptional control. This study evaluated PCC by a meta-analysis of published studies of PCC in women with DM, published from 1970 to 2000. Two reviewers independently abstracted the data, and the rate and relative risk (RR) of major and minor malformations were pooled from eligible studies using a random effects model. Early first-trimester values of glycosylated hemoglobin were recorded. Eight retrospective and eight prospective cohort studies were included; they were carried out in Europe, the United Kingdom, the United States, and Israel. Most participants had type 1 DM, but three studies included women with type 2 DM. Women given PCC tended to be about 2 years older on average than the others. Methods of PCC were quite variable, although most centers provided some maternal education about the pregnancy risks associated with poor glycemic control. In seven studies reporting early gestational glycosylated hemoglobin values, mean levels were consistently lower in PCC patients. Among 2104 offspring, the pooled rate for major and minor anomalies was 2.4% in the PCC group and 7.7% in non-PCC recipients, for a pooled RR of 0.32. Among 2651 offspring, major malformations were less prevalent in the PCC group (2.1 vs. 6.5%; pooled RR = 0.36). Comparable results were obtained when only prospective studies were analyzed and in studies where the infant examiners were unaware of the mothers' PCC status. The lowest risk of major anomalies was in a study that administered folic acid periconceptionally to its PCC recipients; the RR was 0.11. This meta-analysis, which included both retrospective and prospective studies, demonstrates an association of PCC with a significantly lower risk of congenital anomalies in the offspring of women with established DM. The lowered risk was accompanied by significantly lower glycosylated hemoglobin values in the first trimester in recipients of PCC.

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76776022

Behçet's disease associated with a lymphoproliferative disorder, mixed cryoglobulinemia, and an immune complex mediated vasculitis.

Abstract A woman, now 59 has been followed for 13 years with several manifestations of Behcet's disease. These were aphthous stomatitis, genital ulcers, uveitis causing blindness, recurrent erythema nodosum, and synovitis. In 1970 a poorly differentiated diffuse lymphocytic lymphoma appeared and was treated with radiotherapy. In 1976 she developed a mixed cryoglobulinemia and an immune complex mediated vasculitis manifested by purpura and neuropathy which improved on prednisone and chlorambucil therapy. The subsequent course of her lymphoproliferative disorder suggest that it was in fact benign.

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77971703

Older People at the End of Life: Delivery of Care and Needs for Improvement from the Perspective of Bereaved Relatives

BACKGROUND Due to demographic changes with an increasing number of older people with chronic illness and multimorbidity palliative care for geriatric patients has become increasingly important. The aim of this study was to explore the perspective of bereaved relatives with regard to their experiences and expectations concerning the delivery of care for older people in the last phase of life. METHODS Qualitative interviews with 12 relatives of deceased older patients (aged 60 years or older). The interviews were recorded, transcribed, coded and analysed using the approach of qualitative content analysis according to Mayring. RESULTS The bereaved relatives perceived that the care for geriatric patients in the last phase of life was inappropriate in various respects. They criticised overtreatment (e.g. skin cancer diagnostic) as well as unmet needs (e.g. treatment of pain, patient centred care, communication). Family doctors were seen as the primary contact persons in the professional health system. CONCLUSIONS From the perspective of bereaved relatives care for older people in the last phase of life has serious deficits. They criticise an inappropriate priority setting and the disregard of palliative care. There is a need for better communication and information exchange regarding the needs and expectations of patients and relatives, and regarding the targets of treatment. Therefore it may be helpful to use advance directives more intensively. Furthermore, it seems to be necessary to strengthen generalist palliative care particularly delivered by family doctors and community nurses.

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79231308

Role of Computerized Physician Order Entry Systems in Facilitating Medication Errors

as compared with 103 (8.2 percent) in the control group; the Kaplan-Meier estimates of the likelihood of freedom from deep-vein thrombosis or pulmonary embolism at 90 days were 94.1 percent (95 percent confidence interval, 92.5 to 95.4 percent) and 90.6 percent (95 percent confidence interval, 88.7 to 92.2 percent), respectively (P 0.001). The computer alert reduced the risk of deep-vein thrombosis or pulmonary embolism at 90 days by 41 percent (hazard ratio, 0.59; 95 percent confidence interval, 0.43 to 0.81; P 0.001). CONCLUSIONS The institution of a computer-alert program increased physicians’ use of prophylaxis and markedly reduced the rates of deep-vein thrombosis and pulmonary embolism among hospitalized patients at risk. Editorial Comment: Most hospitals have adopted electronic systems to alert physicians of drug interactions or possible substitutions, as well as other measures designed to improve the quality of care and decrease expenses. This approach was taken one step further by these authors, who evaluated whether notifying physicians that their patients were at increased risk for venous thromboembolism would decrease the incidence of deep vein thrombosis or pulmonary embolism. The premise was that simply notifying the physician would increase the use of appropriate prophylactic measures. Major surgery (defined as anything requiring general anesthesia), cancer and age greater than 75 years were included among the risk factors, each of which frequently applies to a urology population. In fact, more than 13% of the patients in the intervention group had a known diagnosis of a genitourinary cancer. The computer alert decreased the risk of deep vein thrombosis or pulmonary embolism by 41%. There are 2 lessons urologists can learn from this study. First, many urology patients are at increased risk for venous thromboembolism and appropriate prophylaxis should be used. In addition, although computer alert systems may seem intrusive at times, clinicians can expect to see more and more of them if there is further documentation that they improve the quality of care.

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79336156

Beta-band oscillations--signalling the status quo?

In this review, we consider the potential functional role of beta-band oscillations, which at present is not yet well understood. We discuss evidence from recent studies on top-down mechanisms involved in cognitive processing, on the motor system and on the pathophysiology of movement disorders that suggest a unifying hypothesis: beta-band activity seems related to the maintenance of the current sensorimotor or cognitive state. We hypothesize that beta oscillations and/or coupling in the beta-band are expressed more strongly if the maintenance of the status quo is intended or predicted, than if a change is expected. Moreover, we suggest that pathological enhancement of beta-band activity is likely to result in an abnormal persistence of the status quo and a deterioration of flexible behavioural and cognitive control.

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79696454

Safety, pharmacokinetics and efficacy of IMCgp100, a first-in-class soluble TCR-antiCD3 bispecific t cell redirector with solid tumour activity: Results from the FIH study in melanoma.

3016Background: T cell-based bispecific agents have shown activity in hematologic cancers, but solid tumor efficacy remains elusive. IMCgp100 is a bispecific biologic comprising an affinityenhanced TCR specific for gp100 and an anti-CD3 scFV. In vitro, IMCgp100 binds gp100+ melanoma cells causing redirection of cytotoxicity and induction of potent immune effects. Methods: The Phase I was conducted in HLA-A2+ pts with advanced melanoma, using a 3+3 design to define the MTD. Pts were treated with IMCgp100 (iv) weekly (QW, Arm 1) or daily (4QD3W, Arm 2) to evaluate safety, PK and efficacy. The recommended phase 2 regimen (RP2D-QW) was defined. Results: In the Ph I dose escalation,31 pts received doses from 5ng/kg to 900ng/kg. In arm 1 dose-limiting toxicity of gr 3 or 4 hypotension was seen and associated with rapid trafficking of peripheral lymphocytes to skin and tumor. The MTD was determined to be 600ng/kg QW. IMCgp100 has an approximately dose-proportional profile with a plasma T1/2 of 5-6 hrs at the RP2...

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80109277

The Bitterest Pills: The Troubling Story of Antipsychotic Drugs

© Joanna Moncrieff 2013. All rights reserved. A challenging reappraisal of the history of antipsychotics, revealing how they were transformed from neurological poisons into magical cures, their benefits exaggerated and their toxic effects minimized or ignored.

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80522346

Variables Affecting Kinetics of Minimal Residual Disease Clearance in Children with Lymphoblastic Leukaemia; Results of the United Kingdom Medical Research Council (UK MRC) Protocols ALL97, ALL97/99 and ALL2003.

We studied the influence of patient, leukaemia and treatment characteristics on the kinetics of Minimal Residual Disease (MRD) clearance in children with lymphoblastic leukaemia treated using an intensive risk stratified approach. UK MRC protocol ALL97 (1997–1999), and its amended version ALL 97/99 (1999–2002), compared the efficacy and toxicity of dexamethasone (DEX) with prednisolone (PRED), and 6-thioguanine (TG) with 6-Mercaptopurine (MP) in a randomised fashion. The trial produced a 5 year event-free survival (EFS) of 80%, with better systemic and Central Nervous System outcomes in DEX compared with PRED recipients but no difference between TG and MP recipients. Several changes to the risk stratification and treatment regimens during the period of the trial provided an opportunity to determine their impact on MRD clearance. We compared this with clearance in those treated on the successor trial ALL 2003 (more intensive induction containing DEX and Pegylated Asparaginase). The variables investigated for their potential influence on MRD status at the end of induction (EOI) were: NCI Risk; Asparaginase intensity (Erwinia Asparaginase [ERW] in ALL 97 and early part of ALL97/99 vs native or Pegylated E. Coli Asparaginase [E. Coli] in later part of ALL 97/99 and ALL2003); DEX vs PRED; and marrow response at day 8/15 of induction (Slow Early Response [SER] >25% blasts vs Rapid Early Response [RER] ⩽ 25% blasts). MRD was assessed using either a semi-quantitative sequence-specific PCR (ALL97) or Real-Time Quantitative PCR (ALL99 and ALL 2003) of antigen receptor gene re-arrangements at EOI. MRD status was defined as NEG if no MRD was detected by two markers sensitive to 10 −4 ; POS if > 10 −4 , and Positive Outside Quantitative Range (POQR) if positive −4 . Results were available from retrospective testing in 66 ALL97 and 76 ALL97/99 patients, and 204 ALL2003 patients monitored prospectively. There was no significant difference in the proportions of patients MRD NEG, POS or POQR in steroid or NCI sub-groups. Significantly more ERW Asparaginase recipients were MRD POS compared with E.Coli (p −4 at EOI have the same low risk of relapse as those who have undetectable MRD.

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81498132

Chromosome numbers in certain Indian species ofUtricularia L. (Lentibulariaceae)

Chromosome numbers from meiotic studies have been reported for the following species ofUtricularia: U. aurea Lour. (n=21);U. baouleënsis A. Chev. (n=10);U. caerulea L. (n=20);U. inflexa var.stellaris (Linn.f.) P. Taylor (n=21);U. minutissima Vahl (n=8);U. scandens Benj. (n=6, 7); andU. stricticaulis Stapf (n=7). There are two cyto-races inU. scandens.

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