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Heterogenity

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https://www.readbyqxmd.com/read/28938792/gastrointestinal-microbial-population-of-turkey-meleagris-gallopavo-affected-by-hemorrhagic-enteritis-virus
#1
Sara D'Andreano, Armand Sànchez Bonastre, Olga Francino, Anna Cuscó Martí, Cristina Lecchi, Guido Grilli, Davide Giovanardi, Fabrizio Ceciliani
Hemorrhagic enteritis (HE) is an acute viral disease that affects avian species, particularly turkeys, compromising their commercial production and having a negative effect on animal welfare. Turkey adenovirus 3 (TAdV-3), is the main causal agent of the disease. In this study, we considered 3 groups of turkeys to achieve 2 purposes: 1) A preliminary investigation on the microbiota content in the 4 parts of healthy turkey's intestine (group A), namely duodenum, jejunum, ileum, and ceca was done; 2) an investigation on the relationship between natural infections with TAdV-3 and the intestinal microbiota in the jejunum, where HE mostly develops, comparing group A with animals with molecular positivity for the virus and with clinical signs of HE (group B) and animals with molecular positivity for the virus but without clinical signs (group C)...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28938745/a-closer-look-at-expanded-carrier-screening-from-a-pgd-perspective
#2
Carolina Vaz-de-Macedo, Joyce Harper
Conventionally, the search for carrier status was based on ethnicity and/or family history and targeted to a restricted number of genetic conditions and mutations. This is now being replaced by extended panels testing for hundreds of genetic disorders with a broad range of phenotypes, in what is called 'expanded carrier screening'. While the ultimate aim of these panels is to increase the reproductive autonomy of the individuals and couples by providing preconception knowledge that could lead to the broadest range of available options, including PGD, we argue that: (i) Given the number and heterogeneity of the conditions included in panels, it cannot be guaranteed that a couple who tests positive for one of those conditions will be eligible for PGD; patients should be informed of this potential limitation before undertaking screening...
October 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28938734/hyperspectral-microscopy-can-detect-metabolic-heterogeneity-within-bovine-post-compaction-embryos-incubated-under-two-oxygen-concentrations-7-versus-20
#3
Melanie L Sutton-McDowall, Martin Gosnell, Ayad G Anwer, Melissa White, Malcolm Purdey, Andrew D Abell, Ewa M Goldys, Jeremy G Thompson
STUDY QUESTION: Can we separate embryos cultured under either 7% or 20% oxygen atmospheres by measuring their metabolic heterogeneity? SUMMARY ANSWER: Metabolic heterogeneity and changes in metabolic profiles in morula exposed to two different oxygen concentrations were not detectable using traditional fluorophore and two-channel autofluorescence but were detectable using hyperspectral microscopy. WHAT IS KNOWN ALREADY: Increased genetic and morphological blastomere heterogeneity is associated with compromised developmental competence of embryos and currently forms the basis for embryo scoring within the clinic...
October 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28938700/liver-cancers-with-stem-progenitor-cell-features-a-rare-chemotherapy-sensitive-malignancy
#4
Bruno Christian Köhler, Nina Waldburger, Kai Schlamp, Dirk Jäger, Karl Heinz Weiss, Henning Schulze-Bergkamen, Peter Schirmacher, Christoph Springfeld
Primary liver tumors are a heterogeneous group of malignancies. Besides classical hepatocellular carcinoma (HCC) and cholangiocarcinoma (CC), combined and intermediate forms of liver cancer exist and can express stem-cell markers like nuclear cell adhesion molecule (NCAM-1/CD56), c-kit (CD117) or epithelial cell adhesion molecule (EpCAM) together with high proliferative activity. Liver tumors with progenitor-cell features are associated with an unfavorable prognosis, but the phenotype has not resulted in therapeutic consequences so far...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938675/ape1-overexpression-is-associated-with-poor-survival-in-patients-with-solid-tumors-a-meta-analysis
#5
Chun-Ling Yuan, Fan He, Jia-Zhou Ye, Hui-Ni Wu, Jin-Yan Zhang, Zhi-Hui Liu, Yong-Qiang Li, Xiao-Ling Luo, Yan Lin, Rong Liang
APE1 is known as a key mediator of DNA damage repair pathways, and its clinical significance in different types of cancer is well studied. Herein, we performed a meta-analysis to determine the association of APE1 expression and survival in different types of solid cancer. We searched all eligible publications in PubMed, Web of Science and Embase platforms from inception to January 2017 and found 15 relevant manuscripts. Overall survival (OS), 12- and 36-month survival rates, and hazard ratios (HRs) were extracted and analyzed...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938673/quantitative-assessment-of-lncrna-hotair-polymorphisms-and-cancer-risk-in-chinese-population-a-meta-analysis-based-on-26-810-subjects
#6
Xu Liu, Qiongyu Duan, Jian Zhang
As a well-known long non-coding RNA, HOTAIR has been demonstrated to be involved in carcinogenesis and progression of various human cancers. Previous studies have investigated the potential association between HOTAIR polymorphisms and cancer risk in Chinese population. However, the results remain conflicting. Therefore, for the first time, we conducted a meta-analysis to derive a more precise estimation of these associations for Chinese. PubMed, Embase, CNKI and Wanfang databases were systematically searched...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938670/statins-and-the-risk-of-cirrhosis-in-hepatitis-b-or-c-patients-a-systematic-review-and-dose-response-meta-analysis-of-observational-studies
#7
Yaqin Wang, Jianping Xiong, Meng Niu, Xiaowei Chen, Long Gao, Qirun Wu, Kechuang Zheng, Ke Xu
Hepatitis B and hepatitis C are leading causes of chronic liver disease, particularly cirrhosis. Recently, several studies have observed that statins have an inverse relationship with cirrhosis in hepatitis B or C patients. However, no published meta-analysis studied the protective effect of statins on cirrhosis. Thus, we conducted a systematic review and meta-analysis of published observational studies to better understand the relationship between statins and the risk of cirrhosis. Relevant studies were identified by searching PubMed, EMBASE, and ISI Web of Science for articles published before April 2017...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938668/systematic-review-and-meta-analysis-cholecystectomy-and-the-risk-of-cholangiocarcinoma
#8
Jianping Xiong, Yaqin Wang, Hanchun Huang, Jin Bian, Anqiang Wang, Junyu Long, Ying Zheng, Xinting Sang, Yiyao Xu, Xin Lu, Haitao Zhao
Studies have reported that cholecystectomy may increase the risk of cholangiocarcinoma. However, this association is controversial. Thus, we conducted a systematic review and meta-analysis to explore the relationship between cholecystectomy and the risk of cholangiocarcinoma. Relevant studies were identified by searching PubMed, EMBASE, ISI Web of Science published before February 2017. We used the random effects model proposed by DerSimonian and Laird to quantify the relationship between cholecystectomy and risk of cholangiocarcinoma...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938667/lncrnas-as-prognostic-molecular-biomarkers-in-hepatocellular-carcinoma-a-systematic-review-and-meta-analysis
#9
Chuqian Zheng, Xiuxia Liu, Leifeng Chen, Zheng Xu, Jianghua Shao
The latest studies have shown that long non-coding RNAs (lncRNAs) may be considered markers as their expression levels were abnormal in cancer and can be used as a molecular biomarker for the potential assessment of cancer prognosis. In this study, we aimed to assess the prognostic value of lncRNA as marker of patients with hepatocellular carcinoma. We performed a detailed search of the PubMed and Embase databases for articles on the prognostic value of various lncRNAs in HCC. We then carefully extracted the relevant data from the articles, and we used the meta-analysis method to analyze these results; heterogeneity and publication bias were also evaluated...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938666/general-anesthesia-exposure-and-risk-of-dementia-a-meta-analysis-of-epidemiological-studies
#10
Jingjing Jiang, Yunxia Dong, Wei Huang, Min Bao
The association between exposure to general anesthesia and dementia risk has been inconsistently reported across epidemiological studies. To better understand the association, we conducted a meta-analysis of epidemiological studies. PubMed and Embase were searched through April 2017. Random-effects models were used to pool association estimates. We further evaluated potential dose-response relationship. Based on literature search, seven prospective/cohort studies, 11 case-control studies, and a pooled analysis of six case-control studies were identified...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938663/transcatheter-hepatic-arterial-chemoembolization-and-sorafenib-for-hepatocellular-carcinoma-a-meta-analysis-of-randomized-double-blind-controlled-trials
#11
Jun Li, Wenhui Liu, Wenhua Zhu, Yinqiao Wu, Benyan Wu
We performed a meta-analysis of transcatheter hepatic arterial chemoembolization (TACE) combined with sorafenib for hepatocellular carcinoma (HCC), which included 4 double-blind, randomized controlled trials (RCTs) that investigated the effects of TACE combined with sorafenib (experimental groups) on time to disease progression (TTP), overall survival (OS), and various sorafenib-related adverse events, compared to those in the placebo (control) groups. A total of 877 HCC cases from 14 countries, including China and the USA, were included in our meta-analysis...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938636/patz1-is-a-new-prognostic-marker-of-glioblastoma-associated-with-the-stem-like-phenotype-and-enriched-in-the-proneural-subtype
#12
Elia Guadagno, Michela Vitiello, Paola Francesca, Gaetano Calì, Federica Caponnetto, Daniela Cesselli, Simona Camorani, Giorgio Borrelli, Marialuisa Califano, Paolo Cappabianca, Claudio Arra, Elvira Crescenzi, Laura Cerchia, Maria Laura Del Basso De Caro, Monica Fedele
Glioblastoma (GBM), the most malignant of the brain tumors, has been classified on the basis of molecular signature into four subtypes: classical, mesenchymal, proneural and neural, among which the mesenchymal and proneural subtypes have the shortest and longest survival, respectively. Here we show that the transcription factor PATZ1 gene is upregulated in gliomas compared to normal brain and, among GBMs, is particularly enriched in the proneural subtype and co-localize with stemness markers. Accordingly, in GBM-derived glioma-initiating stem cells (GSCs) PATZ1 is overexpressed compared to differentiated tumor cells and its expression significantly correlates with the characteristic stem cell capacity to grow as neurospheres in vitro...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938630/prognostic-role-of-neutrophil-lymphocyte-ratio-in-patients-with-glioma
#13
Jing Zhang, Sunfu Zhang, Yanlin Song, Min He, Qingqing Ren, Chaoyue Chen, Zhiyong Liu, Yunhui Zeng, Jianguo Xu
The purpose of this study was to evaluate the prognostic role of neutrophil lymphocyte ratio (NLR) in patients with glioma. PubMed, EMBASE, Cochrane Library and China National Knowledge Infrastructure were searched for relevant literature. The study and patient characteristics were extracted. Hazard ratios (HRs) with 95% confidence intervals (CIs) were pooled to estimate the prognostic role of NLR in patients with glioma. Subgroup analysis and sensitivity analysis were also performed. Six studies with 1,021 patients were included...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938625/predictive-value-of-preoperative-retinal-nerve-fiber-layer-thickness-for-postoperative-visual-recovery-in-patients-with-chiasmal-compression
#14
Jing Zhang, Sunfu Zhang, Yanlin Song, Chenjing Zhu, Min He, Qingqing Ren, Baoyin Shan, Ziqiong Wang, Yunhui Zeng, Jianguo Xu
The aim of this study was to evaluate the predictive role of preoperative retinal nerve fiber layer (RNFL) thickness for postoperative visual recovery in patients with chiasmal compression through performing a meta-analysis. PubMed, EMBASE, Cochrane Library and China National Knowledge Infrastructure were searched for relevant studies. The study and patient characteristics were extracted. Pooled odds ratio (OR) with 95% confidence interval (CI) was calculated to estimate the predictive value of RNFL thickness...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938599/a-pathways-based-prediction-model-for-classifying-breast-cancer-subtypes
#15
Tong Wu, Yunfeng Wang, Ronghui Jiang, Xinliang Lu, Jiawei Tian
Breast cancer is highly heterogeneous and is classified into four subtypes characterized by specific biological traits, treatment responses, and clinical prognoses. We performed a systemic analysis of 698 breast cancer patient samples from The Cancer Genome Atlas project database. We identified 136 breast cancer genes differentially expressed among the four subtypes. Based on unsupervised clustering analysis, these 136 core genes efficiently categorized breast cancer patients into the appropriate subtypes. Functional enrichment based on Kyoto Encyclopedia of Genes and Genomes analysis identified six functional pathways regulated by these genes: JAK-STAT signaling, basal cell carcinoma, inflammatory mediator regulation of TRP channels, non-small cell lung cancer, glutamatergic synapse, and amyotrophic lateral sclerosis...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938539/dissemination-of-macrolides-fusidic-acid-and-mupirocin-resistance-among-staphylococcus-aureus-clinical-isolates
#16
Xingmei Liu, Shanshan Deng, Jinwei Huang, Yaling Huang, Yu Zhang, Qin Yan, Yanhong Wang, Yanyue Li, Chengfu Sun, Xu Jia
As an increasingly common cause of skin infections worldwide, the prevalence of antibiotic-resistant Staphylococcus aureus (S. aureus) across China has not been well documented. This literature aims to study the resistance profile to commonly used antibiotics, including macrolides, fusidic acid (FA) and mupirocin, and its relationship to the genetic typing in 34 S. aureus strains, including 6 methicillin-resistant S. aureus (MRSA), isolated from a Chinese hospital. The MIC results showed 27 (79.4%), 1 (2.9%) and 6 (17...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938535/accurate-primary-germ-cell-cancer-diagnosis-using-serum-based-microrna-detection-amptsmir-test
#17
Ton van Agthoven, Leendert H J Looijenga
Multiple studies, including various methods and overall limited numbers of mostly heterogeneous cases, indicate that the level of embryonic stem cell microRNAs (miRs) (e.g. 371a-3p, 372-3p, 373-3p, and 367-3p) are increased in serum at primary diagnosis of almost all testicular germ cell cancer (TGCC). Here we determine the status of three of these miRs in serum samples of 250 TGCC patients, collected at time of primary diagnosis, compared with 60 non-TGCC patients and 104 male healthy donors. The levels of miRs were measured by the robust ampTSmiR test, including magnetic bead-based miR isolation and target specific pre-amplification followed by real-time quantitative PCR (RT-qPCR) detection...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938460/huwe1-regulates-the-establishment-and-maintenance-of-spermatogonia-by-suppressing-dna-damage-response
#18
Kin Lam Fok, Rohini Bose, Kai Sheng, Ching-Wen Chang, Mira Katz-Egorov, Martine Culty, Sicheng Su, Ming Yang, Ye Chun Ruan, Hsiao-Chang Chan, Antonio Iavarone, Anna Lasorella, Regina Cencic, Jerry Pelletier, Makoto Nagano, Wenming Xu, Simon S Wing
Spermatogenesis is sustained by a heterogeneous population of spermatogonia which includes the spermatogonial stem cells. However, the mechanisms underlying their establishment from gonocyte embryonic precursors and their maintenance thereafter remain largely unknown. Here, we report that inactivation of the ubiquitin ligase Huwe1 in male germ cells in mice led to the degeneration of spermatogonia in neonates and resulted in a Sertoli cell-only phenotype in the adult. Huwe1 KO gonocytes showed a decrease in mitotic re-entry which inhibited their transition to spermatogonia...
August 25, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938448/novel-autosomal-dominant-pth-gene-signal-sequence-mutation-in-a-family-with-familial-isolated-hypoparathyroidism
#19
Luigia Cinque, Angelo Sparaneo, Laura Penta, Amedea Mencarelli, Daniela Rogaia, Susanna Esposito, Federico Pio Fabrizio, Filomena Baorda, Alberto Verrotti, Alberto Falorni, Gabriela Stangoni, Geoffrey N Hendy, Vito Guarnieri, Paolo Prontera
Context: Familial isolated hypoparathyroidism (FIH) is a genetically heterogeneous disorder due to mutations of the calcium-sensing receptor (CASR), glial cells missing-2 (GCM2), guanine nucleotide binding protein alpha 11 (GNA11), or parathyroid hormone (PTH) genes. Thus far, only 4 cases with homozygous and 2 cases with heterozygous mutations in the PTH gene have been reported. Objective: To clinically describe an FIH family and identify and characterize the causal gene mutation...
August 18, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28938420/bone-structural-characteristics-and-response-to-bisphosphonate-treatment-in-children-with-hajdu-cheney-syndrome
#20
Sophia Sakka, Rachel I Gafni, Justin H Davies, Bart Clarke, Peter Tebben, Mark Samuels, Vrinda Saraff, Klaus Klaushofer, Nadja Fratzl-Zelman, Paul Roschger, Frank Rauch, Wolfgang Högler
Context: Hajdu-Cheney syndrome (HJCYS) is a rare, multisystem, bone disease caused by heterozygous mutations in the NOTCH2 gene. Histomorphometric and bone ultrastructural analyses in children have not been reported and sparse evidence exists on response to bisphosphonate (BP) therapy. Objective: To investigate clinical and bone histomorphometric characteristics, bone matrix mineralization and the response of bone geometry and density to BP therapy. Patients: Five children with HJCYS (3 males) aged between 6...
September 8, 2017: Journal of Clinical Endocrinology and Metabolism
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