274 research outputs found

    The experiences of myocardial infarction patients readmitted within six months of primary percutaneous coronary intervention

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    Aims and objectives To explore the experiences of patients readmitted due to potential ischaemic heart disease symptoms within six months of primary percutaneous coronary intervention. Background Following myocardial infarction and primary percutaneous coronary intervention, some patients experience potential ischaemic heart disease symptoms that may lead to readmission. Symptoms may be related to cardiac ischaemia, reduced psychological health or a comorbid condition. Design A qualitative study involving semistructured, in‐depth interviews conducted once, mean 196 (50–384) days following readmission (at least six months following original ST‐elevation myocardial infarction and primary percutaneous coronary intervention). This is the qualitative part of a mixed methods study. Methods Participants were purposefully selected, and concurrent sampling, data collection and data analysis were performed. Data were organised using framework analysis; constant comparative analysis involving deduction and induction led to identification of cogent themes and subthemes. Results Twenty‐five participants (14 men, 27–79 years) experienced 1–4 readmissions; discharge diagnoses were cardiac, psychological, indeterminate, pulmonary and gastric. Three main themes emerged: (1) anxiety, uncertainty and inability to determine cause of symptoms, (2) fear of experiencing further myocardial infarction and (3) insufficient opportunity to validate self‐construction of illness. Conclusion Fear of dying or experiencing a further myocardial infarction led to patients seeking help at the time of potential ischaemic heart disease symptoms. Participants were anxious and lacked understanding regarding symptom attribution at the time of readmission and generally following their heart attack. Additionally, original heart attack symptoms were used as a comparator for future symptoms. Participants reported feeling well immediately after primary percutaneous coronary intervention but later experiencing fatigue and debilitation often linked to potential ischaemic heart disease symptoms. Relevance to clinical practice Increased education and information related to symptom attribution post‐primary percutaneous coronary intervention and postreadmission are worthy of exploration and may lead to increased understanding and reassurance for this patient group

    Delivering NEET policy packages? A decade of NEET policy in England

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    This article explores the way in which government policy shapes the lives of young people who are not in education, employment or training (NEET). In particular it examines how the concept of NEETs is set within a specific infrastructure and discourse for managing and supporting young people. The article provides a brief history of the NEET concept and NEET initiatives, before moving on to scrutinise the policies of the Coalition Government. A key distinction is made between those policies and practices that seek to prevent young people becoming NEET from those that seek to re-engage those who are NEET. It is argued that the Coalition has drawn on a similar active labour market toolkit to the previous Labour administration, but that this has been implemented with fewer resources and less co-ordination. It concludes that there is little reason to believe that Coalition policy will be any more successful than that of the previous government, and some reason to be concerned that it will lead to young people becoming more entrenched within NEET

    U.S. medical resident familiarity with national tuberculosis guidelines

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    <p>Abstract</p> <p>Background</p> <p>The ability of medical residents training at U.S. urban medical centers to diagnose and manage tuberculosis cases has important public health implications. We assessed medical resident knowledge about tuberculosis diagnosis and early management based on American Thoracic Society guidelines.</p> <p>Methods</p> <p>A 20-question tuberculosis knowledge survey was administered to 131 medical residents during a single routinely scheduled teaching conference at four different urban medical centers in Baltimore and Philadelphia. Survey questions were divided into 5 different subject categories. Data was collected pertaining to institution, year of residency training, and self-reported number of patients managed for tuberculosis within the previous year. The Kruskal-Wallis test was used to detect differences in median percent of questions answered correctly based on these variables.</p> <p>Results</p> <p>The median percent of survey questions answered correctly for all participating residents was 55%. Medical resident knowledge about tuberculosis did not improve with increasing post-graduate year of training or greater number of patients managed for tuberculosis within the previous year. Common areas of knowledge deficiency included the diagnosis and management of latent tuberculosis infection (median percent correct, 40.7%), as well as the interpretation of negative acid-fast sputum smear samples.</p> <p>Conclusion</p> <p>Many medical residents lack adequate knowledge of recommended guidelines for the management of tuberculosis. Since experience during training influences future practice pattterns, education of medical residents on guidelines for detection and early management of tuberculosis may be important for future improvements in national tuberculosis control strategies.</p

    HIV Infection and Gut Mucosal Immune Function: Updates on Pathogenesis with Implications for Management and Intervention

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    HIV is primarily a sexually transmitted infection. However, given that the gastrointestinal tract (GIT) houses most of the body’s lymphocytes, including activated memory CD4+ T cells that are preferential targets for HIV, recent research has focused on the role of the GIT in transmission and pathogenesis. In health, the GIT maintains a balance between immune tolerance and rapid responsiveness. A complex network of innate and adaptive responses maintains this balance, which is severely perturbed in HIV infection. Recent studies have focused on mechanisms of GIT CD4+ T-cell depletion and epithelial disruption in HIV infection, the role of inflammation in accelerating viral dissemination, the kinetics of the adaptive response following transmission, and the extent of T-cell reconstitution following antiretroviral therapy. This review summarizes the results of recent investigations that may have important implications for the development of vaccines, microbicides, and therapeutic interventions for HIV and other mucosal pathogens

    A Study of the Influence of Sex on Genome Wide Methylation

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    Sex differences in methylation status have been observed in specific gene-disease studies and healthy methylation variation studies, but little work has been done to study the impact of sex on methylation at the genome wide locus-to-locus level or to determine methods for accounting for sex in genomic association studies. In this study we investigate the genomic sex effect on saliva DNA methylation of 197 subjects (54 females) using 20,493 CpG sites. Three methods, two-sample T-test, principle component analysis and independent component analysis, all successfully identify sex influences. The results show that sex not only influences the methylation of genes in the X chromosome but also in autosomes. 580 autosomal sites show strong differences between males and females. They are found to be highly involved in eight functional groups, including DNA transcription, RNA splicing, membrane, etc. Equally important is that we identify some methylation sites associated with not only sex, but also other phenotypes (age, smoking and drinking level, and cancer). Verification was done through an independent blood cell DNA methylation data (1298 CpG sites from a cancer panel array). The same genomic site-specific influence pattern and potential confounding effects with cancer were observed. The overlapping rate of identified sex affected genes between saliva and blood cell is 81% for X chromosome, and 8% for autosomes. Therefore, correction for sex is necessary. We propose a simple correction method based on independent component analysis, which is a data driven method and accommodates sample differences. Comparison before and after the correction suggests that the method is able to effectively remove the potentially confounding effects of sex, and leave other phenotypes untouched. As such, our method is able to disentangle the sex influence on a genome wide level, and paves the way to achieve more accurate association analyses in genome wide methylation studies

    Epigenetic Silencing of Nucleolar rRNA Genes in Alzheimer's Disease

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    Background: Ribosomal deficits are documented in mild cognitive impairment (MCI), which often represents an early stage Alzheimer’s disease (AD), as well as in advanced AD. The nucleolar rRNA genes (rDNA), transcription of which is critical for ribosomal biogenesis, are regulated by epigenetic silencing including promoter CpG methylation. Methodology/Principal Findings: To assess whether CpG methylation of the rDNA promoter was dysregulated across the AD spectrum, we analyzed brain samples from 10 MCI-, 23 AD-, and, 24 age-matched control individuals using bisulfite mapping. The rDNA promoter became hypermethylated in cerebro-cortical samples from MCI and AD groups. In parietal cortex, the rDNA promoter was hypermethylated more in MCI than in advanced AD. The cytosine methylation of total genomic DNA was similar in AD, MCI, and control samples. Consistent with a notion that hypermethylation-mediated silencing of the nucleolar chromatin stabilizes rDNA loci, preventing their senescence-associated loss, genomic rDNA content was elevated in cerebrocortical samples from MCI and AD groups. Conclusions/Significance: In conclusion, rDNA hypermethylation could be a new epigenetic marker of AD. Moreover, silencing of nucleolar chromatin may occur during early stages of AD pathology and play a role in AD-related ribosoma

    Plant 45S rDNA Clusters Are Fragile Sites and Their Instability Is Associated with Epigenetic Alterations

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    Our previous study demonstrated that 45S ribosomal DNA (45S rDNA) clusters were chromosome fragile sites expressed spontaneously in Lolium. In this study, fragile phenotypes of 45S rDNA were observed under aphidicolin (APH) incubation in several plant species. Further actinomycin D (ActD) treatment showed that transcriptional stress might interfere with chromatin packaging, resulting in 45S rDNA fragile expression. These data identified 45S rDNA sites as replication-dependent as well as transcription-dependent fragile sites in plants. In the presence of ActD, a dramatic switch to an open chromatin conformation and accumulated incomplete 5′ end of the external transcribed spacer (5′ETS) transcripts were observed, accompanied by decreased DNA methylation, decreased levels of histone H3, and increased histone acetylation and levels of H3K4me2, suggesting that these epigenetic alterations are associated with failure of 45S rDNA condensation. Furthermore, the finding that γ-H2AX was accumulated at 45S rDNA sites following ActD treatment suggested that the DNA damage signaling pathway was associated with the appearance of 45S rDNA fragile phenotypes. Our data provide a link between 45S rDNA transcription and chromatin-packaging defects and open the door for further identifying the molecular mechanism involved
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