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https://www.readbyqxmd.com/read/28508686/malignant-peripheral-nerve-sheath-tumor-of-the-femur-a-rare-diagnosis-supported-by-complete-immunohistochemical-loss-of-h3k27me3
#1
Masato Sugawara, Eisuke Kobayashi, Naofumi Asano, Akihiko Yoshida, Akira Kawai
The histological diagnosis of malignant peripheral nerve sheath tumor (MPNST) is challenging because of the wide morphological spectrum and suboptimal performance of conventional immunohistochemical markers. MPNST arising primarily in the bone is exceptional, and its definitive diagnosis, particularly out of the neurofibromatosis type 1 (NF1) context, is even more problematic. Recurrent inactivation of EED or SUZ12 in a majority of MPNSTs results in a complete loss of trimethylated histone H3 at lysine 27 (H3K27me3) immunoreactivity, making it a highly specific biomarker of MPNSTs...
May 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28504193/global-economic-evaluations-of-rotavirus-vaccines-a-systematic-review
#2
REVIEW
Surachai Kotirum, Naaon Vutipongsatorn, Khachen Kongpakwattana, Raymond Hutubessy, Nathorn Chaiyakunapruk
INTRODUCTION: World Health Organization (WHO) recommends Rotavirus vaccines to prevent and control rotavirus infections. Economic evaluations (EE) have been considered to support decision making of national policy. Summarizing global experience of the economic value of rotavirus vaccines is crucial in order to encourage global WHO recommendations for vaccine uptake. Therefore, a systematic review of economic evaluations of rotavirus vaccine was conducted. METHODS: We searched Medline, Embase, NHS EED, EconLit, CEA Registry, SciELO, LILACS, CABI-Global Health Database, Popline, World Bank - e-Library, and WHOLIS...
May 11, 2017: Vaccine
https://www.readbyqxmd.com/read/28494374/eigenvalue-eigenvector-decomposition-eed-analysis-of-dissimilarity-and-covariance-matrix-obtained-from-total-synchronous-fluorescence-spectral-tsfs-data-sets-of-herbal-preparations-optimizing-the-classification-approach
#3
Madhumita Tarai, Keshav Kumar, O Divya, Partha Bairi, Kishor Kumar Mishra, Ashok Kumar Mishra
The present work compares the dissimilarity and covariance based unsupervised chemometric classification approaches by taking the total synchronous fluorescence spectroscopy data sets acquired for the cumin and non-cumin based herbal preparations. The conventional decomposition method involves eigenvalue-eigenvector analysis of the covariance of the data set and finds the factors that can explain the overall major sources of variation present in the data set. The conventional approach does this irrespective of the fact that the samples belong to intrinsically different groups and hence leads to poor class separation...
May 2, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28486222/biomarkers-to-stratify-risk-groups-among-children-with-malnutrition-in-resource-limited-settings-and-to-monitor-response-to-intervention
#4
Christine J McGrath, Michael B Arndt, Judd L Walson
Despite global efforts to reduce childhood undernutrition, current interventions have had little impact on stunting and wasting, and the mechanisms underlying growth faltering are poorly understood. There is a clear need to distinguish populations of children most likely to benefit from any given intervention and to develop tools to monitor response to therapy prior to the development of morbid sequelae. In resource-limited settings, environmental enteric dysfunction (EED) is common among children, contributing to malnutrition and increasing childhood morbidity and mortality risk...
May 9, 2017: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/28475857/mutations-in-epigenetic-regulation-genes-are-a-major-cause-of-overgrowth-with-intellectual-disability
#5
Katrina Tatton-Brown, Chey Loveday, Shawn Yost, Matthew Clarke, Emma Ramsay, Anna Zachariou, Anna Elliott, Harriet Wylie, Anna Ardissone, Olaf Rittinger, Fiona Stewart, I Karen Temple, Trevor Cole, Shazia Mahamdallie, Sheila Seal, Elise Ruark, Nazneen Rahman
To explore the genetic architecture of human overgrowth syndromes and human growth control, we performed experimental and bioinformatic analyses of 710 individuals with overgrowth (height and/or head circumference ≥+2 SD) and intellectual disability (OGID). We identified a causal mutation in 1 of 14 genes in 50% (353/710). This includes HIST1H1E, encoding histone H1.4, which has not been associated with a developmental disorder previously. The pathogenic HIST1H1E mutations are predicted to result in a product that is less effective in neutralizing negatively charged linker DNA because it has a reduced net charge, and in DNA binding and protein-protein interactions because key residues are truncated...
May 4, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/28469800/erythema-elevatum-diutinum-involving-palms-and-soles-a-case-report-and-literature-review
#6
Uma Keyal, Anil Kumar Bhatta, Yeqiang Liu
Erythema elevatum diutinum (EED) is a rare chronic inflammatory dermatosis and a part of the spectrum of cutaneous leukocytoclasticvasculitis. The most common site of involvement is extensor surface of the extremities, with a predilection for the skin overlying joints, particularly hands, feet, elbows and knees, as well as buttocks and Achilles tendons. Here we report a case of EED with atypical presentation involving palms and soles. The patient showed dramatic response to the treatment with prednisolone combined with Tripterygium wilfordii glycoside (TWP)...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28468635/prc2-represses-transcribed-genes-on-the-imprinted-inactive-x-chromosome-in-mice
#7
Emily Maclary, Michael Hinten, Clair Harris, Shriya Sethuraman, Srimonta Gayen, Sundeep Kalantry
BACKGROUND: Polycomb repressive complex 2 (PRC2) catalyzes histone H3K27me3, which marks many transcriptionally silent genes throughout the mammalian genome. Although H3K27me3 is associated with silenced gene expression broadly, it remains unclear why some but not other PRC2 target genes require PRC2 and H3K27me3 for silencing. RESULTS: Here we define the transcriptional and chromatin features that predict which PRC2 target genes require PRC2/H3K27me3 for silencing by interrogating imprinted mouse X-chromosome inactivation...
May 3, 2017: Genome Biology
https://www.readbyqxmd.com/read/28445888/differential-effects-of-inflammatory-and-psychosocial-stress-on-mood-hypothalamic-pituitary-adrenal-axis-and-inflammation-in-remitted-depression
#8
Peter Niemegeers, Peter De Boer, Glenn J H Dumont, Filip Van Den Eede, Erik Fransen, Stephan J Claes, Manuel Morrens, Bernard G C Sabbe
BACKGROUND/AIMS: Major depressive disorder (MDD) is highly recurrent. This may be due to increased stress sensitivity after remission. Both inflammatory and psychosocial stressors are implicated in the pathogenesis of MDD, but the additive or differential effect is unclear. METHODS: We conducted a single-blind placebo-controlled study to investigate the effects of inflammatory stress (i.e., typhoid vaccination), psychosocial stress (i.e., Trier Social Stress Test [TSST]), or a combination of both in women (25-45 years old) with (partially) remitted recurrent MDD (n = 21) and healthy female controls (n = 18)...
April 27, 2017: Neuropsychobiology
https://www.readbyqxmd.com/read/28444062/prognostic-value-of-coronary-flow-reserve-obtained-on-dobutamine-stress-echocardiography-and-its-correlation-with-target-heart-rate
#9
José Sebastião de Abreu, Eduardo Arrais Rocha, Isadora Sucupira Machado, Isabelle O Parahyba, Thais Brito Rocha, Fernando José Villar Nogueira Paes, Tereza Cristina Pinheiro Diogenes, Marília Esther Benevides de Abreu, Ana Gardenia Liberato Ponte Farias, Marcia Maria Carneiro, José Nogueira Paes
Background: Normal coronary flow velocity reserve (CFVR) (≥ 2) obtained in the left anterior descending coronary artery (LAD) from transthoracic echocardiography is associated with a good prognosis, but there is no study correlating CFVR with submaximal target heart rate (HR). Objective: To evaluate the prognostic value of CFVR obtained in the LAD of patients with preserved (>50%) left ventricular ejection fraction (LVEF) who completed a dobutamine stress echocardiography (DSE), considering target HR...
April 20, 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28438226/n-of-1-trials-and-the-optimal-individualisation-of-drug-treatments-a-systematic-review-protocol
#10
Weyinmi A Demeyin, Julia Frost, Obioha C Ukoumunne, Simon Briscoe, Nicky Britten
BACKGROUND: Guidelines and evidence-based drug treatment recommendations are usually based on the results of clinical trials, which have limited generalisability in routine clinical settings due to their restrictive eligibility criteria. These trials are also conducted in ideal and rigorously controlled settings. N of 1 trials, which are single patient multiple crossover studies, offer a means of increasing the evidence base and individualising care for individuals in clinical practice...
April 24, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28435537/integrated-platform-for-expedited-synthesis-purification-testing-of-small-molecule-libraries
#11
Aleksandra Baranczak, Noah P Tu, Jasmina Marjanovic, Philip A Searle, Anil Vasudevan, Stevan W Djuric
The productivity of medicinal chemistry programs can be significantly increased through the introduction of automation, leading to shortened discovery cycle times. Herein, we describe a platform that consolidates synthesis, purification, quantitation, dissolution, and testing of small molecule libraries. The system was validated through the synthesis and testing of two libraries of binders of polycomb protein EED, and excellent correlation of obtained data with results generated through conventional approaches was observed...
April 13, 2017: ACS Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28433419/disconnect-between-alcohol-induced-alterations-in-chromatin-structure-and-gene-transcription-in-a-mouse-embryonic-stem-cell-model-of-exposure
#12
Kylee J Veazey, Haiqing Wang, Yudhishtar S Bedi, William M Skiles, Richard Cheng-An Chang, Michael C Golding
Alterations to chromatin structure induced by environmental insults have become an attractive explanation for the persistence of exposure effects into subsequent life stages. However, a growing body of work examining the epigenetic impact that alcohol and other drugs of abuse exert consistently notes a disconnection between induced changes in chromatin structure and patterns of gene transcription. Thus, an important question is whether perturbations in the 'histone code' induced by prenatal exposures to alcohol implicitly subvert gene expression, or whether the hierarchy of cellular signaling networks driving development is such that they retain control over the transcriptional program...
May 2017: Alcohol
https://www.readbyqxmd.com/read/28428184/clinical-and-cost-effectiveness-safety-and-acceptability-of-community-intravenous-antibiotic-service-models-civas-systematic-review
#13
E D Mitchell, C Czoski Murray, D Meads, J Minton, J Wright, M Twiddy
OBJECTIVE: Evaluate evidence of the efficacy, safety, acceptability and cost-effectiveness of outpatient parenteral antimicrobial therapy (OPAT) models. DESIGN: A systematic review. DATA SOURCES: MEDLINE, EMBASE, CINAHL, Cochrane Library, National Health Service (NHS) Economic Evaluation Database (EED), Research Papers in Economics (RePEc), Tufts Cost-Effectiveness Analysis (CEA) Registry, Health Business Elite, Health Information Management Consortium (HMIC), Web of Science Proceedings, International Pharmaceutical Abstracts, British Society for Antimicrobial Chemotherapy website...
April 20, 2017: BMJ Open
https://www.readbyqxmd.com/read/28427846/vaccines-are-different-a-systematic-review-of-budget-impact-analyses-of-vaccines
#14
REVIEW
Priscilla Magalhaes Loze, Luciana Bertholim Nasciben, Ana Marli Christovam Sartori, Alexander Itria, Hillegonda Maria Dutilh Novaes, Patrícia Coelho de Soárez
INTRODUCTION: Several countries require manufacturers to present a budget impact analysis (BIA), together with a cost-effectiveness analysis, to support national funding requests. However, guidelines for conducting BIA of vaccines are scarce. OBJECTIVES: To analyze the methodological approaches used in published budget impact analysis (BIA) of vaccines, discussing specific methodological issues related to vaccines. MATERIAL AND METHODS: This systematic review of the literature on BIA of vaccines was carried out in accordance with the Centre for Reviews and Dissemination - CRD guidelines...
April 17, 2017: Vaccine
https://www.readbyqxmd.com/read/28406475/depletion-of-polycomb-repressive-complex-2-core-component-eed-impairs-fetal-hematopoiesis
#15
Wenhua Yu, Fang Zhang, Shiyan Wang, Yi Fu, Jiahuan Chen, Xiaodong Liang, Huangying Le, William T Pu, Bing Zhang
Polycomb repressive complex 2 (PRC2), a H3K27me3 methyltransferase complex, promotes the development of many organs by silencing ectopic transcription program. However, currently little is known about the role of PRC2 in blood and vascular development. In this study, we interrogated the function of embryonic ectoderm development (EED), a core PRC2 component, in both endothelial and hematopoietic tissues by inactivating a floxed murine EED allele with Tie2Cre, which catalyzes recombination in endothelial and hematopoietic lineages...
April 13, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28402971/implicating-receptor-activator-of-nf-%C3%AE%C2%BAb-rank-rank-ligand-signalling-in-microglial-responses-to-toll-like-receptor-stimuli
#16
Anton Kichev, Pascale Eede, Pierre Gressens, Claire Thornton, Henrik Hagberg
Inflammation in the perinatal brain caused by maternal or intrauterine fetal infection is now well established as an important contributor to the development of perinatal brain injury. Exposure to inflammatory products can impair perinatal brain development and act as a risk factor for neurological dysfunction, cognitive disorders, cerebral palsy, or preterm birth. Pre-exposure to inflammation significantly exacerbates brain injury caused by hypoxic/ischaemic insult. Tumour necrosis factor (TNF) is a family of cytokines largely involved in inflammation signalling...
April 13, 2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/28394251/eed-orchestration-of-heart-maturation-through-interaction-with-hdacs-is-h3k27me3-independent
#17
Shanshan Ai, Yong Peng, Chen Li, Fei Gu, Xianhong Yu, Yanzhu Yue, Qing Ma, Jinghai Chen, Zhiqiang Lin, Pingzhu Zhou, Huafeng Xie, Terence W Prendiville, Wen Zheng, Yuli Liu, Stuart H Orkin, Da-Zhi Wang, Jia Yu, William T Pu, Aibin He
In proliferating cells, where most Polycomb repressive complex 2 (PRC2) studies have been performed, gene repression is associated with PRC2 trimethylation of H3K27 (H3K27me3). However, it is uncertain whether PRC2 writing of H3K27me3 is mechanistically required for gene silencing. Here, we studied PRC2 function in postnatal mouse cardiomyocytes, where the paucity of cell division obviates bulk H3K27me3 rewriting after each cell cycle. EED (embryonic ectoderm development) inactivation in the postnatal heart (Eed(CKO)) caused lethal dilated cardiomyopathy...
April 10, 2017: ELife
https://www.readbyqxmd.com/read/28387316/lkb1-inactivation-drives-lung-cancer-lineage-switching-governed-by-polycomb-repressive-complex-2
#18
Haikuo Zhang, Christine Fillmore Brainson, Shohei Koyama, Amanda J Redig, Ting Chen, Shuai Li, Manav Gupta, Carolina Garcia-de-Alba, Margherita Paschini, Grit S Herter-Sprie, Gang Lu, Xin Zhang, Bryan P Marsh, Stephanie J Tuminello, Chunxiao Xu, Zhao Chen, Xiaoen Wang, Esra A Akbay, Mei Zheng, Sangeetha Palakurthi, Lynette M Sholl, Anil K Rustgi, David J Kwiatkowski, J Alan Diehl, Adam J Bass, Norman E Sharpless, Glenn Dranoff, Peter S Hammerman, Hongbin Ji, Nabeel Bardeesy, Dieter Saur, Hideo Watanabe, Carla F Kim, Kwok-Kin Wong
Adenosquamous lung tumours, which are extremely poor prognosis, may result from cellular plasticity. Here, we demonstrate lineage switching of KRAS+ lung adenocarcinomas (ADC) to squamous cell carcinoma (SCC) through deletion of Lkb1 (Stk11) in autochthonous and transplant models. Chromatin analysis reveals loss of H3K27me3 and gain of H3K27ac and H3K4me3 at squamous lineage genes, including Sox2, ΔNp63 and Ngfr. SCC lesions have higher levels of the H3K27 methyltransferase EZH2 than the ADC lesions, but there is a clear lack of the essential Polycomb Repressive Complex 2 (PRC2) subunit EED in the SCC lesions...
April 7, 2017: Nature Communications
https://www.readbyqxmd.com/read/28369890/impact-of-childhood-trauma-on-course-of-panic-disorder-contribution-of-clinical-and-personality-characteristics
#19
M De Venter, F Van Den Eede, T Pattyn, K Wouters, D J Veltman, B W J H Penninx, B G Sabbe
OBJECTIVE: To investigate the impact of childhood trauma on the clinical course of panic disorder and possible contributing factors. METHOD: Longitudinal data of 539 participants with a current panic disorder were collected from the Netherlands Study of Depression and Anxiety (NESDA). Childhood trauma was assessed with a structured interview and clinical course after 2 years with a DSM-IV-based diagnostic interview and the Life Chart Interview. RESULTS: At baseline, 54...
June 2017: Acta Psychiatrica Scandinavica
https://www.readbyqxmd.com/read/28346433/a-cytosolic-ezh1-isoform-modulates-a-prc2-ezh1-epigenetic-adaptive-response-in-postmitotic-cells
#20
Beatrice Bodega, Federica Marasca, Valeria Ranzani, Alessandro Cherubini, Francesco Della Valle, Maria Victoria Neguembor, Michel Wassef, Alessio Zippo, Chiara Lanzuolo, Massimiliano Pagani, Valerio Orlando
The evolution of chromatin-based epigenetic cell memory may be driven not only by the necessity for cells to stably maintain transcription programs, but also by the need to recognize signals and allow plastic responses to environmental stimuli. The mechanistic role of the epigenome in adult postmitotic tissues, however, remains largely unknown. In vertebrates, two variants of the Polycomb repressive complex (PRC2-Ezh2 and PRC2-Ezh1) control gene silencing via methylation of histone H3 on Lys27 (H3K27me). Here we describe a reversible mechanism that involves a novel isoform of Ezh1 (Ezh1β)...
May 2017: Nature Structural & Molecular Biology
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