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Fat mass associated gene

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https://www.readbyqxmd.com/read/30027366/dietary-iron-modulates-glucose-and-lipid-homeostasis-in-diabetic-mice
#1
Wan Ma, Yunfei Feng, Li Jia, Shuhui Li, Jiahui Li, Zhenjie Wang, Xiaoyun Chen, Huahua Du
Imbalance of iron homeostasis has been involved in clinical courses of metabolic diseases such as type 2 diabetes mellitus, obesity, and nonalcoholic fatty liver, through mechanisms not yet fully elucidated. Herein, we evaluated the effect of dietary iron on the development of diabetic syndromes in genetically obese db/db mice. Mice (aged 7 weeks) were fed with high-iron (HI) diets (1000 mg/kg chow) or low-iron (LI) diets (12 mg/kg) for 9 weeks. HI diets increased hepatic iron threefold and led to fourfold higher mRNA levels of hepcidin...
July 19, 2018: Biological Trace Element Research
https://www.readbyqxmd.com/read/30026463/genetic-variants-in-sec16b-are-associated-with-body-composition-in-black-south-africans
#2
Venesa Sahibdeen, Nigel J Crowther, Himla Soodyall, Liesl M Hendry, Richard J Munthali, Scott Hazelhurst, Ananyo Choudhury, Shane A Norris, Michèle Ramsay, Zané Lombard
OBJECTIVE: The latest genome-wide association studies of obesity-related traits have identified several genetic loci contributing to body composition (BC). These findings have not been robustly replicated in African populations, therefore, this study aimed to assess whether European BC-associated gene loci played a similar role in a South African black population. METHODS: A replication and fine-mapping study was performed in participants from the Birth to Twenty cohort (N = 1,926) using the Metabochip...
July 19, 2018: Nutrition & Diabetes
https://www.readbyqxmd.com/read/30021629/use-of-a-gene-score-of-multiple-low-modest-effect-size-variants-can-predict-the-risk-of-obesity-better-than-the-individual-snps
#3
Shabana, Saleem Ullah Shahid, Shahida Hasnain
BACKGROUND: Obesity is a complex disorder, the development of which is modulated by a multitude of environmental, behavioral and genetic factors. The common forms of obesity are polygenic in nature which means that many variants in the same or different genes act synergistically and affect the body weight quantitatively. The aim of the current study was to use information from many common variants previously identified to affect body weight to construct a gene score and observe whether it improves the associations observed...
July 18, 2018: Lipids in Health and Disease
https://www.readbyqxmd.com/read/30020828/fat-storage-inducing-transmembrane-protein-2-fit2-is-less-abundant-in-type-2-diabetes-and-regulates-triglyceride-accumulation-and-insulin-sensitivity-in-adipocytes
#4
Madhur Agrawal, Chia Rou Yeo, Asim Shabbir, Vanna Chhay, David L Silver, Faidon Magkos, Antonio Vidal-Puig, Sue-Anne Toh
Fat storage-inducing transmembrane protein 2 (FIT2) aids in partitioning of cellular triacylglycerol into lipid droplets. A genome-wide association study reported FITM2-R3H domain containing like-HNF4A locus to be associated with type 2 diabetes (T2DM) in East Asian populations. Mice with adipose tissue (AT)-specific FIT2 knockout exhibited lipodystrophic features, with reduced AT mass, insulin resistance, and greater inflammation in AT when fed a high-fat diet. The role of FIT2 in regulating human adipocyte function is not known...
July 18, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/30019104/testosterone-in-renal-transplant-patients-effect-on-body-composition-and-clinical-parameters
#5
Danilo Lofaro, Anna Perri, Antonio Aversa, Benedetta Aquino, Martina Bonofiglio, Antonella La Russa, Maria Giovanna Settino, Francesca Leone, Alessandro Ilacqua, Filomena Armentano, Donatella Vizza, Simona Lupinacci, Giuseppina Toteda, Renzo Bonofiglio
BACKGROUND: Clinical studies have demonstrated that, after renal transplantation (TX), testosterone deficiency (TD) at the time of the procedure is independently associated with lower survival of the patient and graft. However, data between TD and the functional CAG polymorphism of the androgen receptor promoter (AR) are discordant. We investigated the prevalence of TD and its association with body composition, biochemical parameters, the Aging Males' Symptoms rating scale (AMS) domains and AR polymorphism...
July 17, 2018: Journal of Nephrology
https://www.readbyqxmd.com/read/30018076/independent-effects-of-dietary-fat-and-sucrose-content-on-chondrocyte-metabolism-and-osteoarthritis-pathology-in-mice
#6
Elise L Donovan, Erika Barboza Prado Lopes, Albert Batushansky, Mike Kinter, Timothy M Griffin
Obesity is one of the most significant risk factors of knee osteoarthritis. However, therapeutic strategies to prevent or treat obesity-associated osteoarthritis are limited because of uncertainty about the etiology of disease, particularly with regard to metabolic factors. High-fat diet-induced obese mice have become a widely used model for testing hypotheses about how obesity increases the risk of osteoarthritis, but progress has been limited by variation in disease severity, with some reports concluding that dietary treatment alone is insufficient to induce osteoarthritis in mice...
July 16, 2018: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/30009538/muscle-fn14-gene-expression-is-associated-with-fat-free-mass-retention-during-energy-deficit-at-high-altitude
#7
Stefan M Pasiakos, Claire E Berryman, John W Carbone, Nancy E Murphy, Christopher T Carrigan, Marcas M Bamman, Arny A Ferrando, Andrew J Young, Lee M Margolis
Intramuscular factors that modulate fat-free mass (FFM) loss in lowlanders exposed to energy deficit during high-altitude (HA) sojourns remain unclear. Muscle inflammation may contribute to FFM loss at HA by inducing atrophy and inhibiting myogenesis via the tumor necrosis factor (TNF)-like weak inducer of apoptosis (TWEAK) and its receptor, fibroblast growth factor-inducible protein 14 (Fn14). To explore whether muscle inflammation modulates FFM loss reportedly developing during HA sojourns, muscle inflammation, myogenesis, and proteolysis were assessed in 16 men at sea level (SL) and following 21 days of energy deficit (-1862 ± 525 kcal/days) at high altitude (HA, 4300 m)...
July 2018: Physiological Reports
https://www.readbyqxmd.com/read/30001365/association-of-inflammatory-genes-in-obstructive-sleep-apnea-and-non-alcoholic-fatty-liver-disease-in-asian-indians-residing-in-north-india
#8
Surya Prakash Bhatt, Randeep Guleria, Naval K Vikram, S V Nandhan, Yogendra Singh, A K Gupta
BACKGROUND: Previous studies have indicated that variants of the high sensitive C-reactive protein (CRP), Interleukin (IL)-6 and leptin receptor (LEPR) genes are associated with the presence of obstructive sleep apnea (OSA) but not in non-alcoholic fatty liver disease (NAFLD) in Asian Indians. The study was conducted to investigate the association of CRP rs1130864 (1444C/T), IL-6 rs1800795 (-174G/C) and LEPR rs1137101 (Q223R) genes with OSA and NAFLD in Asian Indians residing in North India...
2018: PloS One
https://www.readbyqxmd.com/read/29986310/folic-acid-supplementation-alters-the-dna-methylation-profile-and-improves-insulin-resistance-in-high-fat-diet-fed-mice
#9
Wei Li, Renqiao Tang, Feifei Ma, Shengrong Ouyang, Zhuo Liu, Jianxin Wu
Folic acid (FA) supplementation may protect from obesity and insulin resistance, the effects and mechanism of FA on chronic high-fat-diet-induced obesity-related metabolic disorders are not well elucidated. We adopted a genome-wide approach to directly examine whether FA supplementation affects the DNA methylation profile of mouse adipose tissue and identify the functional consequences of these changes. Mice were fed a high-fat diet (HFD), normal diet (ND) or an HFD supplemented with folic acid (20 μg/ml in drinking water) for 10 weeks, epididymal fat was harvested, and genome-wide DNA methylation analyses were performed using methylated DNA immunoprecipitation sequencing (MeDIP-seq)...
June 2, 2018: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29982347/are-serum-concentrations-of-vitamin-b-12-causally-related-to-cardiometabolic-risk-factors-and-disease-a-mendelian-randomization-study
#10
Gunn-Helen Moen, Elisabeth Qvigstad, Kåre I Birkeland, David M Evans, Christine Sommer
Background: Several observational studies have shown that low serum vitamin B-12 is associated with increased body mass index (BMI) and adverse cardiometabolic outcomes. However, it is unclear if these associations reflect a causal effect of vitamin B-12 on cardiometabolic risk factors and diseases, latent confounding, or reverse causality. Objectives: The aims of this study were to investigate 1) the possible causal relation between vitamin B-12 and indicators of body fat, lipid, and glucose variables; type 2 diabetes (T2D); and cardiovascular disease by using a 2-sample Mendelian randomization (MR) method and 2) the possible pleiotropic role of fucosyltransferase 2 (FUT2)...
July 5, 2018: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29958960/the-polyherbal-drug-ggex18-from-laminaria-japonica-rheum-palmatum-and-ephedra-sinica-inhibits-hepatic-steatosis-and-fibroinflammtion-in-high-fat-diet-induced-obese-mice
#11
Jonghoon Lim, Haerim Lee, Jiwon Ahn, Jeongjun Kim, Joonseong Jang, Yonghyun Park, Birang Jeong, Heejung Yang, Soon Shik Shin, Michung Yoon
ETHNOPHARMACOLOGICAL RELEVANCE: The herbal composition Gyeongshingangjeehwan 18 (GGEx18), composed of Rheum palmatum L. (Polygonaceae), Laminaria japonica Aresch (Laminariaceae), and Ephedra sinica Stapf (Ephedraceae), is used as an antiobesity drug in Korean clinics. The constituents of GGEx18 have traditionally been reported to inhibit obesity and related metabolic diseases such as insulin resistance and dyslipidemia. OBJECTIVE: This study investigated the effects of GGEx18 on nonalcoholic fatty liver disease (NAFLD) in mice fed a high-fat diet (HFD) and the underlying cellular and molecular mechanisms involved...
June 26, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29949162/effect-of-the-rs1862513-variant-of-resistin-gene-on-insulin-resistance-and-resistin-levels-after-two-hypocaloric-diets-with-different-fat-distribution-in-subjects-with-obesity
#12
D A de Luis, O Izaola, D Primo, R Aller
OBJECTIVE: Polymorphisms of a single nucleotide in resistin gene (RETN) have been associated with insulin resistance. We decide to investigate the role of this polymorphism on insulin resistance and resistin levels after two hypocaloric diets. PATIENTS AND METHODS: A sample of 361 obese non-diabetic Caucasian was enrolled. Biochemical evaluation and anthropometric data were measured at the start of the trial and repeated after 3 months of both diets (Diet P, Polyunsaturated vs...
June 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29938316/a-high-fat-diet-induced-nmri-mouse-model-of-metabolic-syndrome-focus-on-brain-derived-neurotrophic-factor-bdnf
#13
Isaac Karimi, Shima Motamedi, Fatemeh Ranjbar
The association of brain-derived neurotrophic factor (BDNF) as a member of neurotrophin family and metabolic syndrome (MetS) has been proposed, however basic evidence necessary to prove (or disprove) this association in non-genetic animal model is rare. Therefore, we investigated the alteration of encephalic BDNF gene expression in a mouse model of high-fat diet (HFD) induced MetS. To translate MetS, male NMRI mice (9 weeks old; N = 13) fed on a HFD including suet powder (37.50%) and granulated sugar (19...
June 25, 2018: Metabolic Brain Disease
https://www.readbyqxmd.com/read/29925420/hepatic-steatosis-risk-is-partly-driven-by-increased-de-novo-lipogenesis-following-carbohydrate-consumption
#14
Francis W B Sanders, Animesh Acharjee, Celia Walker, Luke Marney, Lee D Roberts, Fumiaki Imamura, Benjamin Jenkins, Jack Case, Sumantra Ray, Samuel Virtue, Antonio Vidal-Puig, Diana Kuh, Rebecca Hardy, Michael Allison, Nita Forouhi, Andrew J Murray, Nick Wareham, Michele Vacca, Albert Koulman, Julian L Griffin
BACKGROUND: Diet is a major contributor to metabolic disease risk, but there is controversy as to whether increased incidences of diseases such as non-alcoholic fatty liver disease arise from consumption of saturated fats or free sugars. Here, we investigate whether a sub-set of triacylglycerols (TAGs) were associated with hepatic steatosis and whether they arise from de novo lipogenesis (DNL) from the consumption of carbohydrates. RESULTS: We conduct direct infusion mass spectrometry of lipids in plasma to study the association between specific TAGs and hepatic steatosis assessed by ultrasound and fatty liver index in volunteers from the UK-based Fenland Study and evaluate clustering of TAGs in the National Survey of Health and Development UK cohort...
June 20, 2018: Genome Biology
https://www.readbyqxmd.com/read/29924135/exenatide-ameliorates-hepatic-steatosis-and-attenuates-fat-mass-and-fto-gene-expression-through-pi3k-signaling-pathway-in-nonalcoholic-fatty-liver-disease
#15
Shan Li, Xiaoman Wang, Jielei Zhang, Jingyi Li, Xiaogang Liu, Yuanyuan Ma, Chao Han, Lixia Zhang, Lili Zheng
Non-alcoholic fatty liver disease (NAFLD) is a common disease associated with metabolic syndrome and can lead to life-threatening complications like hepatic carcinoma and cirrhosis. Exenatide, a glucagon-like peptide-1 (GLP-1) receptor agonist antidiabetic drug, has the capacity to overcome insulin resistance and attenuate hepatic steatosis but the specific underlying mechanism is unclear. This study was designed to investigate the underlying molecular mechanisms of exenatide therapy on NAFLD. We used in vivo and in vitro techniques to investigate the protective effects of exenatide on fatty liver via fat mass and obesity associated gene (FTO) in a high-fat (HF) diet-induced NAFLD animal model and related cell culture model...
2018: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/29921800/interaction-between-an-adcy3-genetic-variant-and-two-weight-lowering-diets-affecting-body-fatness-and-body-composition-outcomes-depending-on-macronutrient-distribution-a-randomized-trial
#16
Leticia Goni, Jose Ignacio Riezu-Boj, Fermín I Milagro, Fernando J Corrales, Lourdes Ortiz, Marta Cuervo, J Alfredo Martínez
The adenylate cyclase 3 ( ADCY3 ) gene is involved in the regulation of several metabolic processes including the development and function of adipose tissue. The effects of the ADCY3 rs10182181 genetic variant on changes in body composition depending on the macronutrient distribution intake after 16 weeks of the dietary intervention were tested. The ADCY3 genetic variant was genotyped in 147 overweight or obese subjects, who were randomly assigned to one of the two diets varying in macronutrient content: a moderately-high-protein diet and a low-fat diet...
June 19, 2018: Nutrients
https://www.readbyqxmd.com/read/29914938/amino-acid-and-lipid-associated-plasma-metabolomic-patterns-are-related-to-healthspan-indicators-with-aging-in-humans
#17
Lawrence C Johnson, Christopher R Martens, Jessica R Santos-Parker, Candace J Bassett, Talia R Strahler, Charmion Cruickshank-Quinn, Nichole Reisdorph, Matthew B McQueen, Douglas R Seals
Advancing age is associated with impairments in numerous physiological systems, leading to an increased risk of chronic disease and disability, and reduced healthspan (the period of high functioning healthy life). The plasma metabolome is thought to reflect changes in the activity of physiological systems that influence healthspan. Accordingly, we utilized an LC-MS metabolomics analysis of plasma collected from healthy young and older individuals to characterize global changes in small molecule abundances with age...
June 18, 2018: Clinical Science (1979-)
https://www.readbyqxmd.com/read/29909453/m-6-a-rna-methylation-controls-neural-development-and-is-involved-in-human-diseases
#18
REVIEW
Kunzhao Du, Longbin Zhang, Trevor Lee, Tao Sun
RNA modifications are involved in many aspects of biological functions. N6-methyladenosine (m6 A) is one of the most important forms of RNA methylation and plays a vital role in regulating gene expression, protein translation, cell behaviors, and physiological conditions in many species, including humans. The dynamic and reversible modification of m6 A is conducted by three elements: methyltransferases ("writers"), such as methyltransferase-like protein 3 (METTL3) and METTL14; m6 A-binding proteins ("readers"), such as the YTH domain family proteins (YTHDFs) and YTH domain-containing protein 1 (YTHDC1); and demethylases ("erasers"), such as fat mass and obesity-associated protein (FTO) and AlkB homolog 5 (ALKBH5)...
June 16, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29906484/the-contributions-of-diet-genes-and-physical-activity-to-the-etiology-of-obesity-contrary-evidence-and-consilience
#19
REVIEW
Edward Archer, Carl J Lavie, James O Hill
The debate on the relative contributions of presumptive etiologic factors in the development of obesity is becoming increasingly speculative, insular, and partisan. As the global prevalence of obesity continues to rise, the sheer volume of unfounded conjecture threatens to obscure well-established evidence. We posit that the failure to distinguish between causal factors and mere statistical associations engendered the proliferation of misleading and demonstrably false research programs and failed public health initiatives...
June 12, 2018: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/29899523/relation-of-placental-alkaline-phosphatase-expression-in-human-term-placenta-with-maternal-and-offspring-fat-mass
#20
Birgit Hirschmugl, Sarah Crozier, Nina Matthews, Eva Kitzinger, Ingeborg Klymiuk, Hazel M Inskip, Nicholas C Harvey, Cyrus Cooper, Colin P Sibley, Jocelyn Glazier, Christian Wadsack, Keith M Godfrey, Gernot Desoye, Rohan M Lewis
INTRODUCTION: Alkaline phosphatase is implicated in intestinal lipid transport and in the development of obesity. Placental alkaline phosphatase is localised to the microvillous plasma membrane of the placental syncytiotrophoblast at the maternal-fetal interface, but its role is unclear. We investigated the relations of placental alkaline phosphatase activity and mRNA expression with maternal body composition and offspring fat mass in humans. METHODS: Term human placentas from the UK Birthright cohort (n = 52) and the Southampton Women's Survey (SWS) (n = 95) were studied...
June 13, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
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