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Clinical Epigenetics

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https://www.readbyqxmd.com/read/29093763/maternal-eating-disorders-affect-offspring-cord-blood-dna-methylation-a-prospective-study
#1
Nabila Kazmi, Tom R Gaunt, Caroline Relton, Nadia Micali
Background: Eating disorders (ED) are chronic psychiatric disorders, common amongst women of reproductive age. ED in pregnancy are associated with poor nutrition and abnormal intrauterine growth. Increasing evidence also shows offspring of women with ED have adverse developmental and birth outcomes. We sought to carry out the first study investigating DNA methylation in offspring of women with ED. We compared cord blood DNA methylation in offspring of women with active ED (n = 21), past ED (n = 43) and age- and social class-matched controls (n = 126) as part of the Avon Longitudinal Study of Parents and Children...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29090038/methods-and-novel-technology-for-microrna-quantification-in-colorectal-cancer-screening
#2
REVIEW
Laura Moody, Hongshan He, Yuan-Xiang Pan, Hong Chen
The screening and diagnosis of colorectal cancer (CRC) currently relies heavily on invasive endoscopic techniques as well as imaging and antigen detection tools. More accessible and reliable biomarkers are necessary for early detection in order to expedite treatment and improve patient outcomes. Recent studies have indicated that levels of specific microRNA (miRNA) are altered in CRC; however, measuring miRNA in biological samples has proven difficult, given the complicated and lengthy PCR-based procedures used by most laboratories...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29090037/performance-of-a-methylation-specific-real-time-pcr-assay-as-a-triage-test-for-hpv-positive-women
#3
Martina Schmitz, Kristina Wunsch, Heike Hoyer, Cornelia Scheungraber, Ingo B Runnebaum, Alfred Hansel, Matthias Dürst
BACKGROUND: HPV DNA testing as a primary screening marker is being implemented in several countries. Due to the high HPV prevalence in the screening population, effective triage strategies for HPV-positive cases are required. The aim of this study was to evaluate the performance of a methylation-specific real-time PCR  assay (GynTect®) comprising six marker regions as a triage test. RESULTS: An analytical sensitivity of 0.1 ng genomic DNA corresponding to 15 SiHa cells was achieved...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29075360/turnover-of-histones-and-histone-variants-in-postnatal-rat-brain-effects-of-alcohol-exposure
#4
Nadia Rachdaoui, Ling Li, Belinda Willard, Takhar Kasumov, Stephen Previs, Dipak Sarkar
BACKGROUND: Alcohol consumption during pregnancy is a significant public health problem and can result in a continuum of adverse outcomes to the fetus known as fetal alcohol spectrum disorders (FASD). Subjects with FASD show significant neurological deficits, ranging from microencephaly, neurobehavioral, and mental health problems to poor social adjustment and stress tolerance. Neurons are particularly sensitive to alcohol exposure. The neurotoxic action of alcohol, i.e., through ROS production, induces DNA damage and neuronal cell death by apoptosis...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29075359/silencing-hoxd10-by-promoter-region-hypermethylation-activates-erk-signaling-in-hepatocellular-carcinoma
#5
Yulin Guo, Yaojun Peng, Dan Gao, Meiying Zhang, Weili Yang, Enqiang Linghu, James G Herman, François Fuks, Guanglong Dong, Mingzhou Guo
BACKGROUND: Hepatocellular carcinoma is the fifth most common malignancy and the third leading cause of cancer-related death worldwide. Dysregulation of HomeoboxD10 (HOXD10) was found to suppress or promote cancer progression in different cancer types. The function and regulation of HOXD10 remain unclear in human hepatocellular carcinoma (HCC). METHODS: Primary HCC samples (117), normal liver tissue samples (15), and 13 HCC cell lines (SNU182, SNU449, HBXF344, SMMC7721, Huh7, HepG2, LM3, PLC/PRF/5, BEL7402, SNU387, SNU475, QGY7703, and Huh1) were included in this study...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29075358/methylation-of-znf331-is-an-independent-prognostic-marker-of-colorectal-cancer-and-promotes-colorectal-cancer-growth
#6
Yuzhu Wang, Tao He, James G Herman, Enqiang Linghu, Yunsheng Yang, François Fuks, Fuyou Zhou, Linjie Song, Mingzhou Guo
BACKGROUND: ZNF331 was reported to be a transcriptional repressor. Methylation of the promoter region of ZNF331 has been found frequently in human esophageal and gastric cancers. The function and methylation status of ZNF331 remain to be elucidated in human colorectal cancer (CRC). METHODS: Six colorectal cancer cell lines, 146 cases of primary colorectal cancer samples, and 10 cases of noncancerous colorectal mucosa were analyzed in this study using the following techniques: methylation specific PCR (MSP), qRT-PCR, siRNA, flow cytometry, xenograft mice, MTT, colony formation, and transfection assays...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29075357/microrna-335-5p-is-a-potential-suppressor-of-metastasis-and-invasion-in-gastric-cancer
#7
Alejandra Sandoval-Bórquez, Iva Polakovicova, Nicolás Carrasco-Véliz, Lorena Lobos-González, Ismael Riquelme, Gonzalo Carrasco-Avino, Carolina Bizama, Enrique Norero, Gareth I Owen, Juan C Roa, Alejandro H Corvalán
BACKGROUND: Multiple aberrant microRNA expression has been reported in gastric cancer. Among them, microRNA-335-5p (miR-335), a microRNA regulated by DNA methylation, has been reported to possess both tumor suppressor and tumor promoter activities. RESULTS: Herein, we show that miR-335 levels are reduced in gastric cancer and significantly associate with lymph node metastasis, depth of tumor invasion, and ultimately poor patient survival in a cohort of Amerindian/Hispanic patients...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29046735/identification-of-a-key-role-of-widespread-epigenetic-drift-in-barrett-s-esophagus-and-esophageal-adenocarcinoma
#8
E Georg Luebeck, Kit Curtius, William D Hazelton, Sean Maden, Ming Yu, Prashanthi N Thota, Deepa T Patil, Amitabh Chak, Joseph E Willis, William M Grady
BACKGROUND: Recent studies have identified age-related changes in DNA methylation patterns in normal and cancer tissues in a process that is called epigenetic drift. However, the evolving patterns, functional consequences, and dynamics of epigenetic drift during carcinogenesis remain largely unexplored. Here we analyze the evolution of epigenetic drift patterns during progression from normal squamous esophagus tissue to Barrett's esophagus (BE) to esophageal adenocarcinoma (EAC) using 173 tissue samples from 100 (nonfamilial) BE patients, along with publically available datasets including The Cancer Genome Atlas (TCGA)...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29046734/epigenome-wide-association-study-of-asthma-and-wheeze-in-childhood-and-adolescence
#9
Ryan Arathimos, Matthew Suderman, Gemma C Sharp, Kimberley Burrows, Raquel Granell, Kate Tilling, Tom R Gaunt, John Henderson, Susan Ring, Rebecca C Richmond, Caroline L Relton
BACKGROUND: Asthma heritability has only been partially explained by genetic variants and is known to be sensitive to environmental factors, implicating epigenetic modifications such as DNA methylation in its pathogenesis. METHODS: Using data collected in the Avon Longitudinal Study of Parents and Children (ALSPAC), we assessed associations of asthma and wheeze with DNA methylation at 7.5 and 16.5 years, at over 450,000 CpG sites in DNA from the peripheral blood of approx...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29046733/mosaic-genome-wide-maternal-isodiploidy-an-extreme-form-of-imprinting-disorder-presenting-as-prenatal-diagnostic-challenge
#10
Susanne Bens, Manuel Luedeke, Tanja Richter, Melanie Graf, Julia Kolarova, Gotthold Barbi, Krisztian Lato, Thomas F Barth, Reiner Siebert
BACKGROUND: Uniparental disomy of certain chromosomes are associated with a group of well-known genetic syndromes referred to as imprinting disorders. However, the extreme form of uniparental disomy affecting the whole genome is usually not compatible with life, with the exception of very rare cases of patients with mosaic genome-wide uniparental disomy reported in the literature. RESULTS: We here report on a fetus with intrauterine growth retardation and malformations observed on prenatal ultrasound leading to invasive prenatal testing...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29046732/effect-of-a-diet-containing-folate-and-hazelnut-oil-capsule-on-the-methylation-level-of-the-adrb3-gene-lipid-profile-and-oxidative-stress-in-overweight-or-obese-women
#11
Raquel Patrícia Ataíde Lima, Rayner Anderson Ferreira do Nascimento, Rafaella Cristhine Pordeus Luna, Darlene Camati Persuhn, Alexandre Sérgio da Silva, Maria da Conceição Rodrigues Gonçalves, Alessio Tony Cavalcanti de Almeida, Ronei Marcos de Moraes, Eliseu Verly Junior, Emmanuelle Fouilloux-Meugnier, Hubert Vidal, Luciano Pirola, Marciane Magnani, Naila Francis Paulo de Oliveira, Patrícia Oliveira Prada, Maria José de Carvalho Costa
BACKGROUND: Studies of genes that play an important role in the development of obesity are needed, especially studies focusing on genes that regulate food intake and affect nutrient metabolism. For example, the beta-3 adrenergic receptor (ADRB3) responds to noradrenaline and mediates lipolysis in adipocytes. METHODS: This was a controlled intervention study involving 40 overweight and obese adult women in which food intake, anthropometric measurements, biochemical analyses, and methylation levels of the ADRB3 gene were evaluated before and after intervention...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29046731/promoter-methylation-inhibits-expression-of-tumor-suppressor-kibra-in-human-clear-cell-renal-cell-carcinoma
#12
Katrin Schelleckes, Boris Schmitz, Giuliano Ciarimboli, Malte Lenders, Hermann J Pavenstädt, Edwin Herrmann, Stefan-Martin Brand, Eva Brand
BACKGROUND: KIBRA has been suggested as a key regulator of the Hippo signaling pathway, regulating organ size, cell contact inhibition, tissue regeneration as well as tumorigenesis and cystogenesis. We recently reported that human KIBRA expression depends on a complex alternative CpG-rich promoter system. Our current study aimed at the identification of epigenetic mechanisms associated with alterations in KIBRA expression regulation. RESULTS: We identified two separated methylation-sensitive CpG islands located to independent KIBRA promoter regions...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29034009/a-multicenter-randomized-study-of-decitabine-as-epigenetic-priming-with-induction-chemotherapy-in-children-with-aml
#13
Lia Gore, Timothy J Triche, Jason E Farrar, Daniel Wai, Christophe Legendre, Gerald C Gooden, Winnie S Liang, John Carpten, David Lee, Frank Alvaro, Margaret E Macy, Carola Arndt, Philip Barnette, Todd Cooper, Laura Martin, Aru Narendran, Jessica Pollard, Soheil Meshinchi, Jessica Boklan, Robert J Arceci, Bodour Salhia
BACKGROUND: Decitabine is a deoxycytidine nucleoside derivative inhibitor of DNA-methyltransferases, which has been studied extensively and is approved for myelodysplastic syndrome in adults but with less focus in children. Accordingly, we conducted a phase 1 multicenter, randomized, open-label study to evaluate decitabine pre-treatment before standard induction therapy in children with newly diagnosed AML to assess safety and tolerability and explore a number of biologic endpoints. RESULTS: Twenty-four patients were fully assessable for all study objectives per protocol (10 in Arm A = epigenetic priming induction, 14 in Arm B = standard induction)...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29026448/newborn-genome-wide-dna-methylation-in-association-with-pregnancy-anxiety-reveals-a-potential-role-for-gabbr1
#14
Elise Beau Vangeel, Ehsan Pishva, Titia Hompes, Daniel van den Hove, Diether Lambrechts, Karel Allegaert, Kathleen Freson, Benedetta Izzi, Stephan Claes
BACKGROUND: There is increasing evidence for the role of prenatal stress in shaping offspring DNA methylation and disease susceptibility. In the current study, we aimed to identify genes and pathways associated with pregnancy anxiety using a genome-wide DNA methylation approach. METHODS: We selected 22 versus 23 newborns from our Prenatal Early Life Stress (PELS) cohort, exposed to the lowest or highest degree of maternal pregnancy anxiety, respectively. Cord blood genome-wide DNA methylation was assayed using the HumanMethylation450 BeadChip (HM450, n = 45) and candidate gene methylation using EpiTYPER (n = 80)...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29026447/epigenome-alterations-in-aortic-valve-stenosis-and-its-related-left-ventricular-hypertrophy
#15
REVIEW
Igor Gošev, Martina Zeljko, Željko Đurić, Ivana Nikolić, Milorad Gošev, Sanja Ivčević, Dino Bešić, Zoran Legčević, Frane Paić
Aortic valve stenosis is the most common cardiac valve disease, and with current trends in the population demographics, its prevalence is likely to rise, thus posing a major health and economic burden facing the worldwide societies. Over the past decade, it has become more than clear that our traditional genetic views do not sufficiently explain the well-known link between AS, proatherogenic risk factors, flow-induced mechanical forces, and disease-prone environmental influences. Recent breakthroughs in the field of epigenetics offer us a new perspective on gene regulation, which has broadened our perspective on etiology of aortic stenosis and other aortic valve diseases...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29026446/dna-methylation-links-genetics-fetal-environment-and-an-unhealthy-lifestyle-to-the-development-of-type-2-diabetes
#16
REVIEW
Emma Nilsson, Charlotte Ling
Type 2 diabetes is a complex trait with both environmental and hereditary factors contributing to the overall pathogenesis. One link between genes, environment, and disease is epigenetics influencing gene transcription and, consequently, organ function. Genome-wide studies have shown altered DNA methylation in tissues important for glucose homeostasis including pancreas, liver, skeletal muscle, and adipose tissue from subjects with type 2 diabetes compared with nondiabetic controls. Factors predisposing for type 2 diabetes including an adverse intrauterine environment, increasing age, overweight, physical inactivity, a family history of the disease, and an unhealthy diet have all shown to affect the DNA methylation pattern in target tissues for insulin resistance in humans...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29018507/down-regulation-of-mbd4-contributes-to-hypomethylation-and-overexpression-of-cd70-in-cd4-t-cells-in-systemic-lupus-erythematosus
#17
Wei Liao, Mengying Li, Haijing Wu, Sujie Jia, Nu Zhang, Yong Dai, Ming Zhao, Qianjin Lu
BACKGROUND: Systemic lupus erythematosus (SLE) is an autoimmune disease that is characterized by lymphocytic infiltration and overproduction of autoantibodies, leading to significant morbidity and mortality. However, the pathogenesis of this disorder has not yet been completely elucidated. It has been reported that CD70, a B cell costimulatory molecule encoded by the gene TNFSF7 (tumor necrosis factor ligand superfamily member 7), is overexpressed in CD4(+) T cells from patients with SLE due to the demethylation of its promoter...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/28947923/an-epigenome-wide-association-study-in-whole-blood-of-measures-of-adiposity-among-ghanaians-the-rodam-study
#18
Karlijn A C Meeks, Peter Henneman, Andrea Venema, Tom Burr, Cecilia Galbete, Ina Danquah, Matthias B Schulze, Frank P Mockenhaupt, Ellis Owusu-Dabo, Charles N Rotimi, Juliet Addo, Liam Smeeth, Silver Bahendeka, Joachim Spranger, Marcel M A M Mannens, Mohammad H Zafarmand, Charles Agyemang, Adebowale Adeyemo
BACKGROUND: Epigenome-wide association studies (EWAS) have identified DNA methylation loci involved in adiposity. However, EWAS on adiposity in sub-Saharan Africans are lacking despite the high burden of adiposity among African populations. We undertook an EWAS for anthropometric indices of adiposity among Ghanaians aiming to identify DNA methylation loci that are significantly associated. METHODS: The Illumina 450k DNA methylation array was used to profile DNA methylation in whole blood samples of 547 Ghanaians from the Research on Obesity and Diabetes among African Migrants (RODAM) study...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/28947922/diabetes-medication-associates-with-dna-methylation-of-metformin-transporter-genes-in-the-human-liver
#19
Sonia García-Calzón, Alexander Perfilyev, Ville Männistö, Vanessa D de Mello, Emma Nilsson, Jussi Pihlajamäki, Charlotte Ling
BACKGROUND: Given that metformin is the most common pharmacological therapy for type 2 diabetes, understanding the function of this drug is of great importance. Hepatic metformin transporters are responsible for the pharmacologic action of metformin. However, epigenetics in genes encoding metformin transporters has not been fully elucidated. We examined the DNA methylation of these genes in the liver of subjects with type 2 diabetes and tested whether epigenetic alterations associate with diabetes medication, i...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/28932321/identification-and-characterization-of-interferon-signaling-related-micrornas-in-occult-hepatitis-b-virus-infection
#20
Yiying Wang, Peifu Zhu, Jing Qiu, Jie Wang, Huijuan Zhu, Yinwei Zhu, Lige Zhang, Jie Zhu, Xingxiang Liu, Chen Dong
BACKGROUND: Occult hepatitis B virus infection (OBI) is an important risk factor of liver cirrhosis and hepatocellular carcinoma. Type 1 interferon (IFN) signaling-related miRNAs were significantly associated with hepatitis B virus (HBV) infection. However, the characteristics of serum IFN signaling-related miRNAs in OBI remain unclear. Therefore, this study aimed to analyze the expression levels of serum IFN signaling-related miRNAs in OBI and to evaluate their potential values for OBI diagnosis...
2017: Clinical Epigenetics
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