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epigenetics and weight

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https://www.readbyqxmd.com/read/28542485/a-link-between-thrifty-phenotype-and-maternal-care-across-two-generations-of-intercrossed-mice
#1
Bruno Sauce, Carolina P Goes, Isabela Forti, Bruno Gabriel O do Monte, Isabela M Watanabe, Joao Cunha, Andrea C Peripato
Maternal effects are causal influences from mother to offspring beyond genetic information, and have lifelong consequences for multiple traits. Previously, we reported that mice whose mothers did not nurse properly had low birth weight followed by rapid fat accumulation and disturbed development of some organs. That pattern resembles metabolic syndromes known collectively as the thrifty phenotype, which is believed to be an adaptation to a stressful environment which prepares offspring for reduced nutrient supply...
2017: PloS One
https://www.readbyqxmd.com/read/28533070/maternal-and-paternal-periconceptional-nutrition-as-an-indicator-of-offspring-metabolic-syndrome-risk-in-later-life-through-epigenetic-imprinting-a-systematic-review
#2
REVIEW
Ashley R Dunford, Janice M Sangster
AIMS: This review examined whether maternal and paternal periconceptional nutrition effects an offspring's likelihood of developing chronic metabolic related conditions due to epigenetic imprinting. METHODS: A literature search was conducted in multiple science databases and limited to studies published after 2012, in English language and peer reviewed. The data from selected articles were extracted and a qualitative approach was employed due to heterogeneity of results...
May 10, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28523542/eating-disorders-and-epigenetics
#3
Lea Thaler, Howard Steiger
Eating disorders (EDs) are characterized by intense preoccupation with shape and weight and maladaptive eating practices. The complex of symptoms that characterize EDs often arise through the activation of latent genetic potentials by environmental exposures, and epigenetic mechanisms are believed to link environmental exposures to gene expression. This chapter provides an overview of genetic factors acting in the etiology of EDs. It then provides a background to the hypothesis that epigenetic mechanisms link stresses such as obstetric complications and childhood abuse as well as effects of malnutrition to eating disorders (EDs)...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28517981/a-systematic-review-of-studies-of-dna-methylation-in-the-context-of-a-weight-loss-intervention
#4
Lucia Aronica, A Joan Levine, Kevin Brennan, Jeffrey Mi, Christopher Gardner, Robert W Haile, Megan P Hitchins
AIM: Obesity results from the interaction of genetic and environmental factors, which may involve epigenetic mechanisms such as DNA methylation (DNAm). MATERIALS & METHODS: We have followed the PRISMA protocol to select studies that analyzed DNAm at baseline and end point of a weight loss intervention using either candidate-locus or genome-wide approaches. RESULTS: Six genes displayed weight loss associated DNAm across four out of nine genome-wide studies...
May 2017: Epigenomics
https://www.readbyqxmd.com/read/28502862/11-beta-hydroxysteroid-dehydrogenase-2-promoter-methylation-is-associated-with-placental-protein-expression-in-small-for-gestational-age-newborns
#5
Maria-Luisa Lazo-de-la-Vega-Monroy, Martha-Olivia Solís-Martínez, Gustavo Romero-Gutiérrez, Victor E Aguirre-Arzola, Katarzyna Wrobel, Kazimierz Wrobel, Silvio Zaina, Gloria Barbosa-Sabanero
Small for gestational age infants have greater risk of developing metabolic diseases in adult life. It has been suggested that low birth weight may result from glucocorticoid excess in utero, a key mechanism in fetal programming. The placental enzyme 11-beta hydroxysteroid dehydrogenase type 2 (11β-HSD2, HSD11B2 gene) acts as a barrier protecting the fetus from maternal corticosteroid deleterious effects. Low placental 11β-HSD2 transcription and activity have been associated with low birth weight, yet the mechanism regulating its protein expression is not fully understood...
May 11, 2017: Steroids
https://www.readbyqxmd.com/read/28502747/chicken-egg-fetal-liver-dna-and-histopathologic-effects-of-structurally-diverse-carcinogens-and-non-carcinogens
#6
M J Iatropoulos, T Kobets, J-D Duan, K D Brunnemann, E Vock, U Deschl, G M Williams
Chicken egg fetal livers were evaluated for histopathological changes produced by four genotoxic hepatocarcinogens: 2-acetylaminofluorene (AAF), aflatoxin B1 (AFB1), benzo[a]pyrene (BaP), diethylnitrosamine (DEN); four structurally related non- or weakly- carcinogenic comparators: fluorene (FLU), aflatoxin B2 (AFB2), benzo[e]pyrene (BeP), N-nitrosodiethanolamine (NDELA); two epigenetic hepatocarcinogens: clofibric acid (CFA), phenobarbital (PB); and the non-carcinogen, D-mannitol (MAN). CFA, PB and MAN were also assessed for formation of DNA adducts using the (32)P nucleotide postlabeling (NPL) assay and for DNA breaks using the comet assay...
May 11, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28497329/effect-of-cadmium-on-cytosine-hydroxymethylation-in-gastropod-hepatopancreas
#7
Dragos Nica, Cristina Popescu, George Draghici, Ionela Privistirescu, Maria Suciu, Reinhard Stöger
5-Hydroxymethylcytosine (5hmC) is an important, yet poorly understood epigenetic DNA modification, especially in invertebrates. Aberrant genome-wide 5hmC levels have been associated with cadmium (Cd) exposure in humans, but such information is lacking for invertebrate bioindicators. Here, we aimed to determine whether this epigenetic mark is present in DNA of the hepatopancreas of the land snail Cantareus aspersus and is responsive to Cd exposure. Adult snails were reared under laboratory conditions and exposed to graded amounts of dietary cadmium for 14 days...
May 11, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28495587/dose-response-analysis-of-epigenetic-metabolic-and-apical-endpoints-after-short-term-exposure-to-experimental-hepatotoxicants
#8
Isabelle R Miousse, Lynea A Murphy, Haixia Lin, Melissa R Schisler, Jinchun Sun, Marie-Cecile G Chalbot, Radhakrishna Sura, Kamin Johnson, Matthew J LeBaron, Ilias G Kavouras, Laura K Schnackenberg, Richard D Beger, Reza J Rasoulpour, Igor Koturbash
Identification of sensitive and novel biomarkers or endpoints associated with toxicity and carcinogenesis is of a high priority. There is increasing interest in the incorporation of epigenetic and metabolic biomarkers to complement apical data; however, a number of questions, including the tissue specificity, dose-response patterns, early detection of those endpoints, and the added value need to be addressed. In this study, we investigated the dose-response relationship between apical, epigenetic, and metabolomics endpoints following short-term exposure to experimental hepatotoxicants, clofibrate (CF) and phenobarbital (PB)...
May 8, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28486003/placental-lipoprotein-lipase-dna-methylation-alterations-are-associated-with-gestational-diabetes-and-body-composition-at-5%C3%A2-years-of-age
#9
Valérie Gagné-Ouellet, Andrée-Anne Houde, Simon-Pierre Guay, Patrice Perron, Daniel Gaudet, Renée Guérin, Jean-Patrice Baillargeon, Marie-France Hivert, Diane Brisson, Luigi Bouchard
Gestational diabetes mellitus (GDM) is associated with obesity in childhood. This suggests that consequences of in utero exposure to maternal hyperglycemia extend beyond the fetal development, possibly through epigenetic programming. The aims of this study were to assess whether placental DNA methylation (DNAm) marks were associated with maternal GDM status and to offspring body composition at 5 years old in a prospective birth cohort. DNAm levels were measured in the fetal side of the placenta in 66 samples (24 from GDM mothers) using bisDNA-pyrosequencing...
May 9, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/28484595/fetal-and-neonatal-programming-of-postnatal-growth-and-feed-efficiency-in-swine
#10
REVIEW
Yun Ji, Zhenlong Wu, Zhaolai Dai, Xiaolong Wang, Ju Li, Binggen Wang, Guoyao Wu
Maternal undernutrition or overnutrition during pregnancy alters organ structure, impairs prenatal and neonatal growth and development, and reduces feed efficiency for lean tissue gains in pigs. These adverse effects may be carried over to the next generation or beyond. This phenomenon of the transgenerational impacts is known as fetal programming, which is mediated by stable and heritable alterations of gene expression through covalent modifications of DNA and histones without changes in DNA sequences (namely, epigenetics)...
2017: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/28480579/longitudinal-epigenetic-predictors-of-amygdala-hippocampus-volume-ratio
#11
Esther Walton, Charlotte A M Cecil, Matthew Suderman, Jingyu Liu, Jessica A Turner, Vince Calhoun, Stefan Ehrlich, Caroline L Relton, Edward D Barker
BACKGROUND: The ratio between amygdala:hippocampal (AH) volume has been associated with multiple psychiatric problems, including anxiety and aggression. Yet, little is known about its biological underpinnings. Here, we used a methylome-wide approach to test (a) whether DNA methylation in early life (birth, age 7) prospectively associates with total AH volume ratio in early adulthood, and (b) whether significant DNA methylation markers are influenced by prenatal risk factors. METHODS: Analyses were based on a subsample (n = 109 males) from the Avon Longitudinal Study of Parents and Children, which included measures of prenatal risk, DNA methylation (Infinium Illumina 450k), T1-weighted brain scans and psychopathology in early adulthood (age 18-21)...
May 8, 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/28479374/cafeteria-diet-differentially-alters-the-expression-of-feeding-related-genes-through-dna-methylation-mechanisms-in-individual-hypothalamic-nuclei
#12
Gisela Paola Lazzarino, María Florencia Andreoli, María Florencia Rossetti, Cora Stoker, María Virgina Tschopp, Enrique Hugo Luque, Jorge Guillermo Ramos
We evaluated the effect of cafeteria diet (CAF) on the mRNA levels and DNA methylation state of feeding-related neuropeptides, and neurosteroidogenic enzymes in discrete hypothalamic nuclei. Besides, the expression of steroid hormone receptors was analyzed. Female rats fed with CAF from weaning increased their energy intake, body weight, and fat depots, but did not develop metabolic syndrome. The increase in energy intake was related to an orexigenic signal of paraventricular (PVN) and ventromedial (VMN) nuclei, given principally by upregulation of AgRP and NPY...
May 4, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28473875/genome-wide-dna-methylation-analysis-reveals-loci-that-distinguish-different-types-of-adipose-tissue-in-obese-individuals
#13
Donia Macartney-Coxson, Miles C Benton, Ray Blick, Richard S Stubbs, Ronald D Hagan, Michael A Langston
BACKGROUND: Epigenetic mechanisms provide an interface between environmental factors and the genome and are known to play a role in complex diseases such as obesity. These mechanisms, including DNA methylation, influence the regulation of development, differentiation and the establishment of cellular identity. Here we employ two approaches to identify differential methylation between two white adipose tissue depots in obese individuals before and after gastric bypass and significant weight loss...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/28468239/choline-other-methyl-donors-and-epigenetics
#14
Steven Zeisel
Choline dietary intake varies such that many people do not achieve adequate intakes. Diet intake of choline can modulate methylation because, via betaine homocysteine methyltransferase (BHMT), this nutrient (and its metabolite, betaine) regulate the concentrations of S-adenosylhomocysteine and S-adenosylmethionine. Some of the epigenetic mechanisms that modify gene expression without modifying the genetic code depend on the methylation of DNA or of histones; and diet availability of choline and other methyl-group donors influences both of these methylations...
April 29, 2017: Nutrients
https://www.readbyqxmd.com/read/28467969/analysis-of-bos-taurus-and-sus-scrofa-x-and-y-chromosome-transcriptome-highlights-reproductive-driver-genes
#15
Faheem Ahmed Khan, Hui Liu, Hao Zhou, Kai Wang, Muhammad Tahir Ul Qamar, Nuruliarizki Shinta Pandupuspitasari, Zhang Shujun
The biology of sperm, its capability of fertilizing an egg and its role in sex ratio are the major biological questions in reproductive biology. To answer these question we integrated X and Y chromosome transcriptome across different species: Bos taurus and Sus scrofa and identified reproductive driver genes based on Weighted Gene Co-Expression Network Analysis (WGCNA) algorithm. Our strategy resulted in 11007 and 10445 unique genes consisting of 9 and 11 reproductive modules in Bos taurus and Sus scrofa, respectively...
April 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28453643/early-onset-obesity-unrecognized-first-evidence-for-gnas-mutations-and-methylation-changes
#16
Annette Grüters-Kieslich, Monica Reyes, Amita Sharma, Cem Demirci, Terry J DeClue, Erwin Lankes, Dov Tiosano, Dirk Schnabel, Harald Jüppner
Context: Early-onset obesity, characteristic for disorders affecting the leptin-melanocortin pathway, is also observed in pseudohypoparathyroidism type Ia (PHP1A), a disorder caused by maternal GNAS mutations that disrupt expression or function of the stimulatory G protein (Gsα). Mutations and/or epigenetic abnormalities at the same genetic locus are also the cause of pseudohypoparathyroidism type Ib (PHP1B). However, although equivalent biochemical and radiographic findings can be encountered in these related disorders caused by GNAS abnormalities they are considered distinct clinical entities...
April 27, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28451583/pregnancy-an-underutilized-window-of-opportunity-to-improve-long-term-maternal-and-infant-health-an-appeal-for-continuous-family-care-and-interdisciplinary-communication
#17
REVIEW
Birgit Arabin, Ahmet A Baschat
Physiologic adaptations during pregnancy unmask a woman's predisposition to diseases. Complications are increasingly predicted by first-trimester algorithms, amplify a pre-existing maternal phenotype and accelerate risks for chronic diseases in the offspring up to adulthood (Barker hypothesis). Recent evidence suggests that vice versa, pregnancy diseases also indicate maternal and even grandparent's risks for chronic diseases (reverse Barker hypothesis). Pub-Med and Embase were reviewed for Mesh terms "fetal programming" and "pregnancy complications combined with maternal disease" until January 2017...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28444216/dietary-metabolites-derived-from-gut-microbiota-critical-modulators-of-epigenetic-changes-in-mammals
#18
Mohd Iqbal Bhat, Rajeev Kapila
The mammalian gastrointestinal tract harbors trillions of commensal microorganisms, collectively known as the microbiota. The microbiota is a critical source of environmental stimuli and, thus, has a tremendous impact on the health of the host. The microbes within the microbiota regulate homeostasis within the gut, and any alteration in their composition can lead to disorders that include inflammatory bowel disease, allergy, autoimmune disease, diabetes, mental disorders, and cancer. Hence, restoration of the gut flora following changes or imbalance is imperative for the host...
May 1, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28439315/36%C3%A2-h-fasting-of-young-men-influences-adipose-tissue-dna-methylation-of-lep-and-adipoq-in-a-birth-weight-dependent-manner
#19
Line Hjort, Sine W Jørgensen, Linn Gillberg, Elin Hall, Charlotte Brøns, Jan Frystyk, Allan A Vaag, Charlotte Ling
BACKGROUND: Subjects born with low birth weight (LBW) display a more energy-conserving response to fasting compared with normal birth weight (NBW) subjects. However, the molecular mechanisms explaining these metabolic differences remain unknown. Environmental influences may dynamically affect epigenetic marks, also in postnatal life. Here, we aimed to study the effects of short-term fasting on leptin (LEP) and adiponectin (ADIPOQ) DNA methylation and gene expression in subcutaneous adipose tissue (SAT) from subjects with LBW and NBW...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/28438661/systematic-review-of-the-potential-adverse-effects-of-caffeine-consumption-in-healthy-adults-pregnant-women-adolescents-and-children
#20
Daniele Wikoff, Brian T Welsh, Rayetta Henderson, Gregory P Brorby, Janice Britt, Esther Myers, Jeffrey Goldberger, Harris R Lieberman, Charles O'Brien, Jennifer Peck, Milton Tenenbein, Connie Weaver, Seneca Harvey, Jonathan Urban, Candace Doepker
To date, one of the most heavily cited assessments of caffeine safety in the peer-reviewed literature is that issued by Health Canada (Nawrot et al., 2003). Since then, >10,000 papers have been published related to caffeine, including hundreds of reviews on specific human health effects; however, to date, none have compared the wide range of topics evaluated by Nawrot et al. (2003). Thus, as an update to this foundational publication, we conducted a systematic review of data on potential adverse effects of caffeine published from 2001 to June 2015...
April 21, 2017: Food and Chemical Toxicology
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