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obesity genetics

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https://www.readbyqxmd.com/read/28829768/association-of-pre-pregnancy-body-mass-index-with-offspring-metabolic-profile-analyses-of-3-european-prospective-birth-cohorts
#1
Diana L Santos Ferreira, Dylan M Williams, Antti J Kangas, Pasi Soininen, Mika Ala-Korpela, George Davey Smith, Marjo-Riitta Jarvelin, Debbie A Lawlor
BACKGROUND: A high proportion of women start pregnancy overweight or obese. According to the developmental overnutrition hypothesis, this could lead offspring to have metabolic disruption throughout their lives and thus perpetuate the obesity epidemic across generations. Concerns about this hypothesis are influencing antenatal care. However, it is unknown whether maternal pregnancy adiposity is associated with long-term risk of adverse metabolic profiles in offspring, and if so, whether this association is causal, via intrauterine mechanisms, or explained by shared familial (genetic, lifestyle, socioeconomic) characteristics...
August 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28828296/cardiometabolic-risk-factors-in-children-with-celiac-disease-on-a-gluten-free-diet
#2
REVIEW
Caterina Anania, Lucia Pacifico, Francesca Olivero, Francesco Massimo Perla, Claudio Chiesa
Celiac disease (CD) is an immune-mediated systemic condition evoked by gluten and related prolamines in genetically predisposed subjects. It is characterised by a variable combination of gluten-dependent clinical symptoms, CD-specific antibodies, HLA-DQ2 and HLA-DQ8 haplotypes, and enteropathy. The only therapy of CD consists of a life-long gluten free diet (GFD). Strict GFD adherence results in full clinical, serological and histological remission, avoiding long-term complications in CD patients. However, this diet is not without problems...
August 8, 2017: World Journal of Clinical Pediatrics
https://www.readbyqxmd.com/read/28828242/genome-wide-association-study-identifies-novel-type-ii-diabetes-risk-loci-in-jordan-subpopulations
#3
Rana Dajani, Jin Li, Zhi Wei, Michael E March, Qianghua Xia, Yousef Khader, Nancy Hakooz, Raja Fatahallah, Mohammed El-Khateeb, Ala Arafat, Tareq Saleh, Abdel Rahman Dajani, Zaid Al-Abbadi, Mohamed Abdul Qader, Abdel Halim Shiyab, Anwar Bateiha, Kamel Ajlouni, Hakon Hakonarson
The prevalence of Type II Diabetes (T2D) has been increasing and has become a disease of significant public health burden in Jordan. None of the previous genome-wide association studies (GWAS) have specifically investigated the Middle East populations. The Circassian and Chechen communities in Jordan represent unique populations that are genetically distinct from the Arab population and other populations in the Caucasus. Prevalence of T2D is very high in both the Circassian and Chechen communities in Jordan despite low obesity prevalence...
2017: PeerJ
https://www.readbyqxmd.com/read/28826746/the-prevalence-of-food-addiction-in-a-large-sample-of-adolescents-and-its-association-with-addictive-substances
#4
Gabry W Mies, Jorien L Treur, Junilla K Larsen, Jutka Halberstadt, Joëlle A Pasman, Jacqueline M Vink
The prevalence of overweight and obesity is increasing, due to, among other factors, increased availability of highly palatable food (food high in fat, salt and/or sugar). It has been proposed that certain foods and/or eating behaviours may be addictive, to a degree comparable to substances of abuse. The Yale Food Addiction Scale (YFAS) measures 'food addiction' by translating the diagnostic criteria for substance use disorder to eating behaviour. So far, only a few studies have examined the prevalence of food addiction in children with the YFAS for children (YFAS-C)...
August 4, 2017: Appetite
https://www.readbyqxmd.com/read/28819125/inflammation-and-bone-mineral-density-a-mendelian-randomization-study
#5
Jian V Huang, C Mary Schooling
Osteoporosis is a common age-related disorder leading to an increase in osteoporotic fractures and resulting in significant suffering and disability. Inflammation may contribute to osteoporosis, as it does to many other chronic diseases. We examined whether inflammation is etiologically relevant to osteoporosis, assessed from bone mineral density (BMD), as a new potential target of intervention, or whether it is a symptom/biomarker of osteoporosis. We obtained genetic predictors of inflammatory markers from genome-wide association studies and applied them to a large genome wide association study of BMD...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818748/association-of-brain-derived-neurotrophic-factor-gene-polymorphisms-with-body-mass-index-a-systematic-review-and-meta-analysis
#6
REVIEW
Shahab-Aldin Akbarian, Amin Salehi-Abargouei, Makan Pourmasoumi, Roya Kelishadi, Parvaneh Nikpour, Motahar Heidari-Beni
BACKGROUND: Many studies with inconsistent results have assessed the association of Brain-derived neurotrophic factor (BDNF) gene polymorphisms with prevalence of obesity and overweight. This review aims to provide a summary of the literature evaluating the relation between BDNF genotype and body mass index (BMI). METHODS: A systematic search through PubMed, Scopus, Science direct, Ovid and Cochrane was performed. We included observational studies with cross-sectional and case-control design, which investigated relationship between all kinds of BDNF polymorphisms with BMI, as a representative index of obesity and overweight...
August 14, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28814400/mediation-and-modification-of-genetic-susceptibility-to-obesity-by-eating-behaviors
#7
Blandine de Lauzon-Guillain, Emma Ad Clifton, Felix R Day, Karine Clément, Soren Brage, Nita G Forouhi, Simon J Griffin, Yves Akoli Koudou, Véronique Pelloux, Nicholas J Wareham, Marie-Aline Charles, Barbara Heude, Ken K Ong
Background: Many genetic variants show highly robust associations with body mass index (BMI). However, the mechanisms through which genetic susceptibility to obesity operates are not well understood. Potentially modifiable mechanisms, including eating behaviors, are of particular interest to public health.Objective: Here we explore whether eating behaviors mediate or modify genetic susceptibility to obesity.Design: Genetic risk scores for BMI (BMI-GRSs) were calculated for 3515 and 2154 adults in the Fenland and EDEN (Etude des déterminants pré et postnatals de la santé et du développement de l'enfant) population-based cohort studies, respectively...
August 16, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28811369/obesity-associated-gene-tmem18-has-a-role-in-the-central-control-of-appetite-and-body-weight-regulation
#8
Rachel Larder, M F Michelle Sim, Pawan Gulati, Robin Antrobus, Y C Loraine Tung, Debra Rimmington, Eduard Ayuso, Joseph Polex-Wolf, Brian Y H Lam, Cristina Dias, Darren W Logan, Sam Virtue, Fatima Bosch, Giles S H Yeo, Vladimir Saudek, Stephen O'Rahilly, Anthony P Coll
An intergenic region of human chromosome 2 (2p25.3) harbors genetic variants which are among those most strongly and reproducibly associated with obesity. The gene closest to these variants is TMEM18, although the molecular mechanisms mediating these effects remain entirely unknown. Tmem18 expression in the murine hypothalamic paraventricular nucleus (PVN) was altered by changes in nutritional state. Germline loss of Tmem18 in mice resulted in increased body weight, which was exacerbated by high fat diet and driven by increased food intake...
August 15, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28805745/insulin-resistance-and-nafld-a-dangerous-liaison-beyond-the-genetics
#9
REVIEW
Melania Manco
Over the last decade, the understanding of the association between insulin resistance (IR) and non-alcoholic fatty liver disease (NAFLD) has dramatically evolved. There is clear understanding that carriers of some common genetic variants, i.e., the patatin-like phospholipase domain-containing 3 (PNPLA3) or the transmembrane 6 superfamily member 2 (TM6SF2) are at risk of developing severe forms of NAFLD even in the presence of reduced or absent IR. In contrast, there are obese patients with "metabolic" (non-genetically driven) NAFLD who present severe IR...
August 14, 2017: Children
https://www.readbyqxmd.com/read/28804972/mendelian-randomisation-analysis-provides-no-evidence-for-a-relationship-between-adult-height-and-testicular-cancer-risk
#10
M Levy, D Hall, A Sud, P Law, K Litchfield, D Dudakia, T B Haugen, R Karlsson, A Reid, R A Huddart, T Grotmol, F Wiklund, R S Houlston, C Turnbull
Observational studies have suggested anthropometric traits, particularly increased height are associated with an elevated risk of testicular cancer (testicular germ cell tumour). However, there is an inconsistency between study findings, suggesting the possibility of the influence of confounding factors. To examine the association between anthropometric traits and testicular germ cell tumour using an unbiased approach, we performed a Mendelian randomisation study. We used genotype data from genome wide association studies of testicular germ cell tumour totalling 5518 cases and 19,055 controls...
August 13, 2017: Andrology
https://www.readbyqxmd.com/read/28804621/development-of-gene-polymorphisms-in-meditators-of-nonalcoholic-fatty-liver-disease
#11
Chun Wang, Jianping Gong, Hao Wu
Nonalcoholic fatty liver disease (NAFLD) is the most prevalent liver disease worldwide, the morbidity of which closely correlates with diversity of ethnicity, minority, family and location. Its histology spans from simple steatosis, to nonalcoholic steatohepatitis, which ultimately results in fibrosis, cirrhosis and hepatocellular carcinoma. The accelerating prevalence of NAFLD is due to an incremental incidence of metabolic syndrome that is distinguished by dyslipidemia, glucose impairment, obesity, excessive oxidative stress and adipocytokine impairment...
August 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28804483/the-impact-of-western-diet-and-nutrients-on-the-microbiota-and-immune-response-at-mucosal-interfaces
#12
REVIEW
Donjete Statovci, Mònica Aguilera, John MacSharry, Silvia Melgar
Recent findings point toward diet having a major impact on human health. Diets can either affect the gut microbiota resulting in alterations in the host's physiological responses or by directly targeting the host response. The microbial community in the mammalian gut is a complex and dynamic system crucial for the development and maturation of both systemic and mucosal immune responses. Therefore, the complex interaction between available nutrients, the microbiota, and the immune system are central regulators in maintaining homeostasis and fighting against invading pathogens at mucosal sites...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28803384/does-obesity-modify-the-relationship-between-physical-activity-and-breast-cancer-risk
#13
REVIEW
S E Neil-Sztramko, T Boyle, E Milosevic, S F Nugent, C C Gotay, K L Campbell
PURPOSE: With only 5-10% of breast cancer cases attributed to genetic inheritance, prevention efforts have focused on modifiable risk factors. Physical activity plays a role in reducing breast cancer risk; however, the interaction between physical activity and other modifiable risk factors, such as obesity, has received little attention. METHODS: A systematic review and meta-analysis was conducted of studies examining the relationship between physical activity and breast cancer and how it may be modified by body mass index (BMI)...
August 12, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28799494/contribution-of-large-animals-to-translational-research-on-prenatal-programming-of-obesity-and-associated-diseases
#14
Antonio Gonzalez-Bulnes, Pascale Chavatte-Palmer
BACKGROUND: The awareness of factors causing obesity and associated disorders has grown up in the last years from genome to a more complicated concept (developmental programming) in which prenatal and early-postnatal conditions markedly modify the phenotype and homeostasis of the individuals and determine juvenile growth, life-time fitness/obesity and disease risks. Experimentation in human beings is impeded by ethical issues plus inherent high variability and confounding factors (genetics, lifestyle and socioeconomic heterogeneity) and preclinical studies in adequate translational animal models are therefore decisive...
August 11, 2017: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/28799434/metabolic-biomarkers-and-gallstone-disease-a-population-based-study
#15
Daniel Mønsted Shabanzadeh, Tea Skaaby, Lars Tue Sørensen, Jesper Eugen-Olsen, Torben Jørgensen
OBJECTIVES: The objectives for this study were to examine the associations between metabolic biomarkers of obesity including insulin resistance, vascular dysfunction, systemic inflammation, genetic susceptibility and ultrasound proven gallstone disease or cholecystectomy in a population-based cross-sectional study. MATERIAL AND METHODS: A total of 2650 participants were included, of whom 422 had gallstone disease. Associations between selected metabolic biomarkers and gallstone disease were estimated by multivariable logistic regression models and expressed as odds ratio (OR) and 95% confidence interval (CI)...
August 11, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28797265/risk-and-predictors-of-psoriasis-in-patients-with-breast-cancer-a-swedish-population-based-cohort-study
#16
Haomin Yang, Judith S Brand, Jingmei Li, Jonas F Ludvigsson, Emilio Ugalde-Morales, Flaminia Chiesa, Per Hall, Kamila Czene
BACKGROUND: The risk of psoriasis in patients with breast cancer is largely unknown, as available evidence is limited to case findings. We systematically examined the incidence and risk factors of psoriasis in patients with breast cancer. METHODS: A Swedish nationwide cohort of 56,235 breast cancer patients (2001-2012) was compared to 280,854 matched reference individuals from the general population to estimate the incidence and hazard ratio (HR) of new-onset psoriasis...
August 11, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28795262/growth-factor-energy-and-nutrient-sensing-signalling-pathways-in-metabolic-ageing
#17
Lucia Bettedi, Lazaros C Foukas
The field of the biology of ageing has received increasing attention from a biomedical point of view over the past decades. The main reason has been the realisation that increases in human population life expectancy are accompanied by late onset diseases. Indeed, ageing is the most important risk factor for a number of neoplastic, neurodegenerative and metabolic pathologies. Advances in the knowledge of the genetics of ageing, mainly through research in model organisms, have implicated various cellular processes and the respective signalling pathways that regulate them in cellular and organismal ageing...
August 9, 2017: Biogerontology
https://www.readbyqxmd.com/read/28792545/contribution-of-independent-and-pleiotropic-genetic-effects-in-the-metabolic-syndrome-in-a-hypertensive-rat
#18
Man Chun John Ma, Janette M Pettus, Jessica A Jakoubek, Matthew G Traxler, Karen C Clark, Amanda K Mennie, Anne E Kwitek
Hypertension is a major risk factor for cardiovascular disease, Type 2 diabetes, and end organ failure, and is often found concomitant with disorders characteristic of the Metabolic Syndrome (MetS), including obesity, dyslipidemia, and insulin resistance. While the associated features often occur together, the pathway(s) or mechanism(s) linking hypertension in MetS are not well understood. Previous work determined that genetic variation on rat chromosome 17 (RNO17) contributes to several MetS-defining traits (including hypertension, obesity, and dyslipidemia) in the Lyon Hypertensive (LH) rat, a genetically determined MetS model...
2017: PloS One
https://www.readbyqxmd.com/read/28790540/the-effect-of-adolescent-idiopathic-scoliosis-on-the-occurrence-of-varicose-veins-on-lower-extremities
#19
Goran Talic, Luka Talic, Djurdjica Stevanovic-Papica, Tatjana Nozica-Radulovic, Snjezana Novakovic-Bursac
INTRODUCTION: Scoliosis is a complex three-dimensional spine deformity with the frontal plane deflexion (side-shift) of the series of vertebra from the midline and with torque deformity of vertebra, ribs, and the entire trunk towards the apex of curve. Chronic venous diseases present a group of pathological conditions caused by the increased venous pressure. The venous pressure may be increased due to genetics, ligament laxity, general obesity, injuries, and changes in biomechanics of spine and lower extremities, etc...
April 2017: Medical Archives
https://www.readbyqxmd.com/read/28790027/increased-mitochondrial-calcium-uniporter-in-adipocytes-underlies-mitochondrial-alterations-associated-with-insulin-resistance
#20
Lauren E Wright, Denis Vecellio Reane, Gabriella Milan, Anna Terrin, Giorgia di Bello, Anna Belligoli, Marta Sanna, Mirto Foletto, Francesca Favaretto, Anna Raffaello, Cristina Mammucari, Donato Nitti, Roberto Vettor, Rosario Rizzuto
Intracellular calcium influences an array of pathways and affects cellular processes. With the rapidly progressing research investigating the molecular identity and the physiological roles of the Mitochondrial Calcium Uniporter (MCU) complex, we now have the tools to understand the functions of mitochondrial Ca(2+) in the regulation of pathophysiological processes. Herein, we describe the role of key MCU complex components in insulin resistance in mouse and human adipose tissue. Adipose tissue gene expression was analysed from several models of obese and diabetic rodents and in obese patients, as well as in vitro insulin-resistant adipocytes...
August 8, 2017: American Journal of Physiology. Endocrinology and Metabolism
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