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epigenetics and weight

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https://www.readbyqxmd.com/read/29138870/insig2-rs7566605-single-nucleotide-variant-and-global-dna-methylation-index-levels-are-associated-with-weight-loss-in-a-personalized-weight-reduction-program
#1
Francesca Pirini, Sebastian Rodriguez-Torres, Bola Grace Ayandibu, María Orera-Clemente, Alberto Gonzalez-de la Vega, Fahcina Lawson, Roland J Thorpe, David Sidransky, Rafael Guerrero-Preston
Single nucleotide polymorphisms associated with lipid metabolism and energy balance are implicated in the weight loss response caused by nutritional interventions. Diet‑induced weight loss is also associated with differential global DNA methylation. DNA methylation has been proposed as a predictive biomarker for weight loss response. Personalized biomarkers for successful weight loss may inform clinical decisions when deciding between behavioral and surgical weight loss interventions. The aim of the present study was to investigate the association between global DNA methylation, genetic variants associated with energy balance and lipid metabolism, and weight loss following a non‑surgical weight loss regimen...
November 14, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29135487/update-on-endocrine-aspects-of-childhood-obesity
#2
Charumathi Baskaran, Nurgun Kandemir
PURPOSE OF REVIEW: Although childhood obesity has leveled off in the last decade, 'severe obesity' continues to be on the rise. Various genetic, environmental and hormonal factors contribute to obesity. This article reviews the most current understanding of obesity's multifactorial origin and recent recommendations for its management in childhood and adolescence. RECENT FINDINGS: Epigenetics plays a key role in transmitting obesity risk to offspring. Single-nucleotide polymorphisms at genetic loci for adipokines and their receptors are associated with obesity...
November 11, 2017: Current Opinion in Endocrinology, Diabetes, and Obesity
https://www.readbyqxmd.com/read/29106309/maternal-gestational-weight-gain-and-dna-methylation-in-young-women-application-of-life-course-mediation-methods
#3
Jonathan Y Huang, David S Siscovick, Hagit Hochner, Yechiel Friedlander, Daniel A Enquobahrie
AIM: To investigate the role of maternal gestational weight gain (GWG) and prepregnancy BMI on programming offspring DNA methylation. METHODS: Among 589 adult (age = 32) women participants of the Jerusalem Perinatal Study, we quantified DNA methylation in five candidate genes. We used inverse probability-weighting and parametric g-formula to estimate direct effects of maternal prepregnancy BMI and GWG on methylation. RESULTS: Higher maternal GWG, but not prepregnancy BMI, was inversely related to offspring ABCA1 methylation (β = -1...
November 6, 2017: Epigenomics
https://www.readbyqxmd.com/read/29080342/cross-talk-between-bile-acids-and-gastro-intestinal-and-thermogenic-clues-from-bariatric-surgery
#4
Gabriella Garruti, Agostino Di Ciaula, Helen H Wang, David Q-H Wang, Piero Portincasa
Obesity is rapidly increasing and has reached epidemic features worldwide. It´s linked to insulin resistance, systemic low-grade inflammation and common pathogenic pathways with a number of comorbidities (including cancer), leading to high mortality rates. Besides change of lifestyles (diet and physical exercise) and pharmacological therapy, bariatric surgery is able to rapidly improve several metabolic and morphologic features associated with excessive fat storage, and currently represents an in vivo model to study the pathogenic mechanisms underlying obesity and obesity-related complications...
October 28, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/29077881/interplay-among-h3k9-editing-enzymes-suv39h1-jmjd2c-and-src-1-drives-p66shc-transcription-and-vascular-oxidative-stress-in-obesity
#5
Sarah Costantino, Francesco Paneni, Agostino Virdis, Shafaat Hussain, Shafeeq Ahmed Mohammed, Giuliana Capretti, Alexander Akhmedov, Kevin Dalgaard, Sergio Chiandotto, J Andrew Pospisilik, Thomas Jenuwein, Marco Giorgio, Massimo Volpe, Stefano Taddei, Thomas F Lüscher, Francesco Cosentino
Aims: Accumulation of reactive oxygen species (ROS) promotes vascular disease in obesity, but the underlying molecular mechanisms remain poorly understood. The adaptor p66Shc is emerging as a key molecule responsible for ROS generation and vascular damage. This study investigates whether epigenetic regulation of p66Shc contributes to obesity-related vascular disease. Methods and results: ROS-driven endothelial dysfunction was observed in visceral fat arteries (VFAs) isolated from obese subjects when compared with normal weight controls...
October 25, 2017: European Heart Journal
https://www.readbyqxmd.com/read/29064478/dna-methylation-in-blood-from-neonatal-screening-cards-and-the-association-with-bmi-and-insulin-sensitivity-in-early-childhood
#6
S J van Dijk, T J Peters, M Buckley, J Zhou, P A Jones, R A Gibson, M Makrides, B S Muhlhausler, P L Molloy
BACKGROUND/OBJECTIVES: There is increasing evidence that metabolic diseases originate in early life, and epigenetic changes have been implicated as key drivers of this early life programming. This led to the hypothesis that epigenetic marks present at birth may predict an individual's future risk of obesity and type 2 diabetes. In this study, we assessed whether epigenetic marks in blood of newborn children were associated with body mass index (BMI) and insulin sensitivity later in childhood...
September 25, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29059189/inhibition-of-mir-142-5p-ameliorates-disease-in-mouse-models-of-experimental-colitis
#7
Nicolette W Duijvis, Perry D Moerland, Cindy Kunne, Monique M W Slaman, Faas H van Dooren, Esther W Vogels, Wouter J de Jonge, Sybren L Meijer, Kees Fluiter, Anje A Te Velde
BACKGROUND: MicroRNAs (miRNAs) are epigenetically involved in regulating gene expression. They may be of importance in the pathogenesis of inflammatory bowel disease (IBD). The aim of this study was to determine the role of miRNAs by their specific blocking in the CD4+CB45RBhi T-cell transfer model of chronic experimental colitis. METHODS: Colitis caused by transfer of WT CD4+CD45RBhi T cells in severe combined immunodeficiency (SCID) mice shares many features with human IBD...
2017: PloS One
https://www.readbyqxmd.com/read/29058986/identification-of-clinical-and-biologic-correlates-associated-with-outcome-in-children-with-adrenocortical-tumors-without-germline-tp53-mutations-a-st-jude-adrenocortical-tumor-registry-and-children-s-oncology-group-study
#8
Emilia Modolo Pinto, Carlos Rodriguez-Galindo, Stanley B Pounds, Lei Wang, Michael R Clay, Geoffrey Neale, Elizabeth A R Garfinkle, Catherine G Lam, Carolyn Fein Levy, Alberto S Pappo, Gerard P Zambetti, Raul C Ribeiro
Purpose The clinical features, pathogenesis, and outcomes in children with adrenocortical tumors (ACTs) without germline TP53 mutations have not been systematically studied. Herein, we describe these correlates and analyze their association with outcome. Patients and Methods Genomic DNA was analyzed for TP53, CTNNB1, CDKN1C, ATRX, and chromosome 11p15 abnormalities. β-catenin expression and Ki-67 labeling index (LI) were evaluated by immunostaining. Primary end points were progression-free (PFS) and overall survival...
October 23, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/29053854/dietary-betaine-supplementation-increases-adrenal-expression-of-steroidogenic-acute-regulatory-protein-and-yolk-deposition-of-corticosterone-in-laying-hens
#9
Halima Abobaker, Yun Hu, Zhen Hou, Qinwei Sun, Abdulrahman A Idriss, Nagmeldin A Omer, Yibo Zong, Ruqian Zhao
Betaine, an important methyl donor, is known to execute epigenetic regulation of gene expression via nutritional reprogramming. Herein, we explore whether feeding a betaine-supplemented diet to laying hens would affect corticosteroid biosynthesis in the adrenal gland and corticosterone deposition in eggs, in correlation with the expression of methyl transfer enzymes and the promoter DNA methylation status of affected genes. Rugao yellow-feathered laying hens at 38 weeks of age were assigned to Control and Betaine groups, fed basal and betaine-supplemented diets, respectively, for four weeks...
September 20, 2017: Poultry Science
https://www.readbyqxmd.com/read/29052784/exercise-and-bone-health-across-the-lifespan
#10
Lívia Santos, Kirsty Jayne Elliott-Sale, Craig Sale
With ageing, bone tissue undergoes significant compositional, architectural and metabolic alterations potentially leading to osteoporosis. Osteoporosis is the most prevalent bone disorder, which is characterised by progressive bone weakening and an increased risk of fragility fractures. Although this metabolic disease is conventionally associated with ageing and menopause, the predisposing factors are thought to be established during childhood and adolescence. In light of this, exercise interventions implemented during maturation are likely to be highly beneficial as part of a long-term strategy to maximise peak bone mass and hence delay the onset of age- or menopause-related osteoporosis...
October 20, 2017: Biogerontology
https://www.readbyqxmd.com/read/29049890/dna-methylation-signatures-in-peripheral-blood-mononuclear-cells-from-a-lifestyle-intervention-for-women-at-midlife-a-pilot-rct
#11
Lisa M McEwen, Evan G Gatev, Meaghan J Jones, Julia L MacIsaac, Megan M McAllister, Rebecca E Goulding, Kenneth M Madden, Martin G Dawes, Michael S Kobor, Maureen C Ashe
OBJECTIVES: Physical activity confers many health benefits, but the underlying mechanisms require further exploration. In this pilot randomized controlled trial we tested the association between longitudinal measures of DNA methylation and changes in objective measures including physical activity, weight loss, and C-reactive protein levels in community-dwelling women aged 55 to 70 years. METHODS: We assessed DNA methylation from 20 healthy post-menopausal women (55-70 years of age), who did not have a mobility disability and allocated them to a group-based intervention, Everyday Activity Supports You (EASY), or a control group (monthly group-based health-related education sessions)...
October 19, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29045034/differential-expression-profiles-of-circulating-micrornas-in-newborns-associated-to-maternal-pregestational-overweight-and-obesity
#12
A Méndez-Mancilla, V Lima-Rogel, J C Toro-Ortíz, F Escalante-Padrón, A E Monsiváis-Urenda, D E Noyola, M Salgado-Bustamante
BACKGROUND: The perinatal environment has a role in the establishment of altered metabolic and inflammatory responses, and could be modulated by microRNAs regulating immune and metabolic processes. OBJECTIVE: To analyze the expression profile of four circulating microRNAs and cytokine serum concentrations in neonates born to overweight and obese women. METHODS: Pregnant women were included and grouped by pregestational body mass index (21 with normal weight, 10 overweight and 10 obese women)...
October 17, 2017: Pediatric Obesity
https://www.readbyqxmd.com/read/29030699/prematurity-and-biliary-atresia-a-30-year-observational-study
#13
Natalie Durkin, Maesha Deheragoda, Mark Davenport
AIM OF STUDY: The diagnosis of biliary atresia (BA) remains challenging and delay can lead to significant morbidity with time to surgery a key factor in determining outcome. Prematurity may impact on outcome potentially delaying diagnosis. We sought to assess whether the premature BA infants (PBA) have a delayed time to surgery and as such, worse outcomes? METHODS: Review of a single-centre prospectively maintained database. Prematurity was defined as delivery < 37/40 gestation...
October 13, 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/29028941/dysregulation-of-cortical-neuron-dna-methylation-profile-in-autism-spectrum-disorder
#14
Stefano Nardone, Dev Sharan Sams, Antonino Zito, Eli Reuveni, Evan Elliott
Autism Spectrum Disorder (ASD) is a complex neuropsychiatric syndrome whose etiology includes genetic and environmental components. Since epigenetic marks are sensitive to environmental insult, they may be involved in the development of ASD. Initial brain studies have suggested a dysregulation of epigenetic marks in ASD. However, due to cellular heterogeneity in the brain, these studies have not determined if there is a true change in the neuronal epigenetic signature. Here, we report a genome-wide methylation study on fluorescence-activated cell sorting-sorted neuronal nuclei from the frontal cortex of 16 male ASD and 15 male control subjects...
December 1, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29027401/identification-of-dna-methylation-associated-gene-signatures-in-endometrial-cancer-via-integrated-analysis-of-dna-methylation-and-gene-expression-systematically
#15
Chuandi Men, Hongjuan Chai, Xumin Song, Yue Li, Huawen Du, Qing Ren
OBJECTIVE: Endometrial cancer (EC) is a common gynecologic cancer worldwide. However, the pathogenesis of EC has not been epigenetically elucidated. Here, this study aims to describe the DNA methylation profile and identify favorable gene signatures highly associated with aberrant DNA methylation changes in EC. METHODS: The data regarding DNA methylation and gene expression were downloaded from The Cancer Genome Atlas (TCGA) database. Differentially methylated CpG sites (DMCs), differentially methylated regions (DMRs), and differentially expressed genes (DEGs) were identified, and the relationship between the 2 omics was further analyzed...
November 2017: Journal of Gynecologic Oncology
https://www.readbyqxmd.com/read/29017633/associations-between-maternal-prenatal-stress-methylation-changes-in-igf1-and-igf2-and-birth-weight
#16
D Montoya-Williams, J Quinlan, C Clukay, N C Rodney, D A Kertes, C J Mulligan
Maternal stress has been linked to low birth weight in newborns. One potential pathway involves epigenetic changes at candidate genes that may mediate the effects of prenatal maternal stress on birth weight. This relationship has been documented in stress-related genes, such as NR3C1. There is less literature exploring the effect of stress on growth-related genes. IGF1 and IGF2 have been implicated in fetal growth and development, though via different mechanisms as IGF2 is under imprinting control. In this study, we tested for associations between prenatal stress, methylation of IGF1 and IGF2, and birth weight...
October 11, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/29017438/hsd11b2-runx3-and-line-1-methylation-in-placental-dna-of-hypertensive-disorders-of-pregnancy-patients
#17
Aleksandra Majchrzak-Celińska, Katarzyna Kosicka, Julia Paczkowska, Franciszek K Główka, Grzegorz H Bręborowicz, Mariola Krzyścin, Anna Siemiątkowska, Marcin Szaumkessel, Wanda Baer-Dubowska
Hypertensive Disorders of Pregnancy (HDsP) remain leading causes of maternal and perinatal morbidity and mortality. Growing evidence suggests the involvement of epigenetic factors, such as gene-specific and global DNA methylation changes, both in the etiology and as an effect of HDsP. In this study, we investigated the potential association between placental DNA methylation status in selected CpGs of HSD11B2 cortisol level controlling gene, RUNX3 tumor suppressor gene, and long interspersed nucleotide element-1 (LINE-1) repetitive elements and HDsP-preeclampsia (PE), gestational hypertension (GH), and chronic hypertension (CH)...
November 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28964710/differential-dna-methylation-in-monozygotic-twins-discordant-for-female-sexual-functioning
#18
Andrea Burri, Myriam Leupin, Timothy Spector, Zoya Marinova
BACKGROUND: Research has repeatedly suggested genetic and environmental factors in the etiology underlying female sexual dysfunction (FSD). Because sexual functioning is a highly variable trait, epigenetics could provide a promising approach to tackle the origins of FSD and consequently offer a step-change in our understanding of these problems. AIM: To identify differentially methylated CpG positions for sexual functioning in a sample of monozygotic twin pairs discordant for sexual functioning...
September 27, 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28934364/the-histone-variant-macroh2a-confers-functional-robustness-to-the-intestinal-stem-cell-compartment
#19
Ryan James Cedeno, Angela Nakauka-Ddamba, Maryam Yousefi, Stephanie Sterling, Nicolae Adrian Leu, Ning Li, John R Pehrson, Christopher Joachim Lengner
A stem cell's epigenome directs cell fate during development, homeostasis, and regeneration. Epigenetic dysregulation can lead to inappropriate cell fate decisions, aberrant cell function, and even cancer. The histone variant macroH2A has been shown to influence gene expression, guide cell fate, and safeguard against genotoxic stress. Interestingly, mice lacking functional macroH2A histones (hereafter referred to as macroH2A DKO) are viable and fertile; yet suffer from increased perinatal death and reduced weight and size compared to wildtype (WT)...
2017: PloS One
https://www.readbyqxmd.com/read/28933030/phenotype-comparison-confirms-zmynd11-as-a-critical-gene-for-10p15-3-microdeletion-syndrome
#20
Birute Tumiene, Ž Čiuladaitė, E Preikšaitienė, R Mameniškienė, A Utkus, V Kučinskas
Proper epigenetic regulation processes are crucial in the normal development of the human brain. An ever-increasing group of neurodevelopmental disorders due to derangements of epigenetic regulation involve both microdeletion and monogenic syndromes. Some of these syndromes have overlapping clinical phenotypes due to haploinsufficiency-sensitive genes involved in microdeletions. It was shown recently that the ZMYND11 gene has important functions in epigenetic regulation as an unconventional transcription co-repressor of highly expressed genes, possibly acting in the repression of cryptic transcription from gene bodies...
November 2017: Journal of Applied Genetics
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