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Edwin Thanarajah S, Hanssen R, Melzer C, Tittgemeyer M. Increased meso-striatal connectivity mediates trait impulsivity in FTO variant carriers. Front Endocrinol (Lausanne) 2023; 14:1130203. [PMID: 37223038 PMCID: PMC10200952 DOI: 10.3389/fendo.2023.1130203] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 03/31/2023] [Indexed: 05/25/2023] Open
Abstract
Objective While variations in the first intron of the fat mass and obesity-associated gene (FTO, rs9939609 T/A variant) have long been identified as a major contributor to polygenic obesity, the mechanisms underlying weight gain in risk allele carriers still remain elusive. On a behavioral level, FTO variants have been robustly linked to trait impulsivity. The regulation of dopaminergic signaling in the meso-striatal neurocircuitry by these FTO variants might represent one mechanism for this behavioral alteration. Notably, recent evidence indicates that variants of FTO also modulate several genes involved in cell proliferation and neuronal development. Hence, FTO polymorphisms might establish a predisposition to heightened trait impulsivity during neurodevelopment by altering structural meso-striatal connectivity. We here explored whether the greater impulsivity of FTO variant carriers was mediated by structural differences in the connectivity between the dopaminergic midbrain and the ventral striatum. Methods Eighty-seven healthy normal-weight volunteers participated in the study; 42 FTO risk allele carriers (rs9939609 T/A variant, FTO + group: AT, AA) and 39 non-carriers (FTO - group: TT) were matched for age, sex and body mass index (BMI). Trait impulsivity was assessed via the Barratt Impulsiveness Scale (BIS-11) and structural connectivity between the ventral tegmental area/substantia nigra (VTA/SN) and the nucleus accumbens (NAc) was measured via diffusion weighted MRI and probabilistic tractography. Results We found that FTO risk allele carriers compared to non-carriers, demonstrated greater motor impulsivity (p = 0.04) and increased structural connectivity between VTA/SN and the NAc (p< 0.05). Increased connectivity partially mediated the effect of FTO genetic status on motor impulsivity. Conclusion We report altered structural connectivity as one mechanism by which FTO variants contribute to increased impulsivity, indicating that FTO variants may exert their effect on obesity-promoting behavioral traits at least partially through neuroplastic alterations in humans.
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Affiliation(s)
- Sharmili Edwin Thanarajah
- Max Planck Institute for Metabolism Research, Cologne, Germany
- Department for Psychiatry, Psychosomatic Medicine and Psychotherapy, University Hospital Frankfurt, Goethe University, Frankfurt am Main, Germany
| | - Ruth Hanssen
- Max Planck Institute for Metabolism Research, Cologne, Germany
- Faculty of Medicine and University Hospital Cologne, Policlinic for Endocrinology, Diabetes and Preventive Medicine (PEPD), University of Cologne, Cologne, Germany
| | - Corina Melzer
- Max Planck Institute for Metabolism Research, Cologne, Germany
| | - Marc Tittgemeyer
- Max Planck Institute for Metabolism Research, Cologne, Germany
- Cluster of Excellence in Cellular Stress Responses in Aging-associated Diseases (CECAD), Cologne, Germany
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2
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Al-Homedi Z, Afify N, Memon M, Alsafar H, Tay G, Jelinek HF, Mousa M, Abu-Samra N, Osman W. Genetic Studies of Metabolic Syndrome in Arab Populations: A Systematic Review and Meta-Analysis. Front Genet 2021; 12:733746. [PMID: 34868209 PMCID: PMC8637276 DOI: 10.3389/fgene.2021.733746] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 10/20/2021] [Indexed: 12/25/2022] Open
Abstract
Background: The metabolic syndrome (MetS) is prevalent in Arabian populations. Several small-scale studies have been performed to investigate the genetic basis of MetS. This systematic review and meta-analysis aimed to examine whether candidate gene polymorphisms are associated with MetS susceptibility among ethnic groups of the Arabian world and to suggest possible directions for future research regarding genetic markers and MetS. Methods: A search was conducted for peer-reviewed articles that examined the genetic association of MetS in Arabian populations in the following databases: Medline, Embase, Scopus, Direct Science, Web of Science, ProQuest, and Google Scholar until March 31, 2021. Articles were eligible if they were case-control studies, which investigated MetS as a dichotomous outcome (MetS vs no MetS). To assess the quality of the studies, the Q-Genie tool (Quality of Genetic Association Studies) was used. A non-central chi2 (random-effect) distribution was used to determine the heterogeneity (H) of Q and I (Galassi et al., The American journal of medicine, 2006, 119, 812–819) statistics. Results: Our search strategy identified 36 studies that met our inclusion criteria. In most cases, studies were excluded due to a lack of statistical information such as odds ratios, confidence intervals, and p-values. According to the Q-Genie tool, 12 studies scored poorly (a score of≤35), 13 studies scored moderately ( >35 and≤45), and 12 studies had good quality ( >45 or higher). The most frequently studied genes were FTO and VDR (both included in four studies). Three SNPs indicated increased risk for MetS after calculating the pooled odds ratios: FTO-rs9939609 (odds ratio 1.49, 95% CI: 0.96–2.32); LEP-rs7799039 (odds ratio 1.85, 95% CI: 1.37–2.5); and SERPINA12-rs2236242 (odds ratio 1.65, 95% CI: 1.21–2.24). Meta-analysis studies showed no significant heterogeneity. Conclusion: There were many sources of heterogeneity in the study settings. Most of the studies had low to moderate quality because of sample size and power issues, not considering all potential sources of bias, and not providing details about genotyping methods and results. As most studies were small-scale, aimed to replicate findings from other populations, we did not find any unique genetic association between MetS and Arabian populations.
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Affiliation(s)
- Zahrah Al-Homedi
- College of Medicine and Health Sciences, Khalifa University, Abu Dhabi, United Arab Emirates
| | - Nariman Afify
- College of Medicine and Health Sciences, Khalifa University, Abu Dhabi, United Arab Emirates
| | - Mashal Memon
- College of Medicine and Health Sciences, Khalifa University, Abu Dhabi, United Arab Emirates
| | - Habiba Alsafar
- Center for Biotechnology, Khalifa University, Abu Dhabi, United Arab Emirates.,Department of Genetics and Molecular Biology, College of Medicine and Health Sciences, Abu Dhabi, United Arab Emirates.,Department of Biomedical Engineering, College of Engineering, Khalifa University, Abu Dhabi, United Arab Emirates
| | - Guan Tay
- Department of Psychiatry, UWA Medical School, The University of Western Australia, Nedlands, WA, Australia.,School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia
| | - Herbert F Jelinek
- Department of Biomedical Engineering, College of Engineering, Khalifa University, Abu Dhabi, United Arab Emirates.,Health Innovation Engineering Center, Khalifa University, Abu Dhabi, United Arab Emirates
| | - Mira Mousa
- Center for Biotechnology, Khalifa University, Abu Dhabi, United Arab Emirates.,Nuffield Department of Women's and Reproduction Health, Oxford University, Oxford, United Kingdom
| | - Nadia Abu-Samra
- Department of Biology, College of Arts and Sciences, Khalifa University, Abu Dhabi, United Arab Emirates
| | - Wael Osman
- Center for Biotechnology, Khalifa University, Abu Dhabi, United Arab Emirates.,Department of Biology, College of Arts and Sciences, Khalifa University, Abu Dhabi, United Arab Emirates
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3
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Kulaeva ED, Volchik VV, Bocharova OV, Teplakova ED, Shkurat MA, Derevyanchuk EG, Mashkina EV. Association of SNPs in Lipid Metabolism Gene Single Nucleotide Polymorphism with the Risk of Obesity in Children. Genet Test Mol Biomarkers 2021; 25:419-425. [PMID: 34152846 DOI: 10.1089/gtmb.2020.0343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Background: Obesity is one of the most common metabolic disorders in the world, which develops due to an imbalance in energy consumption and expenditure, and both genetic and environmental factors are of great importance. We investigated the potential interactions of single nucleotide polymorphisms that might contribute to the development of polygenic obesity in children. Objective: The study involved 367 children and adolescents of both sexes aged from 4 to 18 years. The control group (normal weight) and the overweight groups included 65 and 302 children respectively. Methods: DNA for analysis was isolated from peripheral blood lymphocytes, then allelic variants rs99305069 of the FTO gene (chr16:53786615), Gln192Arg of the PON1 gene (chr7: 95308134), -250G>A of the LIPC gene (chr15: 58431740), and Ser447Ter of the LPL gene (chr8:19957678) were studied using the SNP-Express reagent kit. The results of allelic interactions were analyzed using the multifactor dimensionality reduction method. Results and Discussion: Among overweight children, the distribution of genotype and allele frequencies for the studied single nucleotide polymorphisms of the four genes corresponded to those of the control group (p > 0.05). It was found that in obese children SerSer homozygotes at the Ser447Ter polymorphism of the LPL gene, had serum triglyceride (TG) levels 2.3 times higher than in children with the same genotype from the control group. In overweight Ser447Ter heterozygotes (p < 0.0001), the TG level exceeded the control values by only 13% (p = 0.044). A two-locus genotype FTO AT/LPL SerTer, was associated with a reduced risk of childhood obesity.
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Affiliation(s)
- Elizaveta D Kulaeva
- Biology of Development and Genome Organization Laboratory, Department of Genetics, Southern Federal University Rostov-on-Don, Russia
| | - Varvara V Volchik
- Biology of Development and Genome Organization Laboratory, Department of Genetics, Southern Federal University Rostov-on-Don, Russia
| | - Olga V Bocharova
- Department of Pediatrician, Rostov State Medical University, Rostov-on-Don, Russia
| | - Elena D Teplakova
- Department of Pediatrician, Rostov State Medical University, Rostov-on-Don, Russia
| | - Mikhail A Shkurat
- Biology of Development and Genome Organization Laboratory, Department of Genetics, Southern Federal University Rostov-on-Don, Russia
| | - Ekaterina G Derevyanchuk
- Animal and Human Genetics Laboratory, Department of Genetics, Southern Federal University, Rostov-on-Don, Russia
| | - Elena V Mashkina
- Animal and Human Genetics Laboratory, Department of Genetics, Southern Federal University, Rostov-on-Don, Russia
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4
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Chen X, Gao Y, Yang X, Zhang H, Mo Z, Tan A. Relationship of FTO gene variations with NAFLD risk in Chinese men. Open Life Sci 2021; 15:860-867. [PMID: 33817272 PMCID: PMC7874577 DOI: 10.1515/biol-2020-0081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 07/22/2020] [Accepted: 07/24/2020] [Indexed: 12/15/2022] Open
Abstract
Background Fat mass and obesity-associated (FTO) gene is an obesity susceptibility gene and its relationship with the nonalcoholic fatty liver disease (NAFLD) remains unclear. This study aims to investigate the relationships of FTO gene variations with NAFLD risk in a Chinese male population. Methods A 1:2 matched case–control study was performed on 275 cases of NAFLD and 550 controls matched for age. Nine of the FTO gene single nucleotide polymorphisms (SNPs) were genotyped. Results Logistic regression analysis found that FTO rs1477196 was significantly associated with the susceptibility to NAFLD in recessive genetic models [unadjusted odds ratio (OR) = 2.52, 95% confidence interval (CI): 1.22–5.19, P = 0.012] and the relativity weakened after further adjustment for body mass index (BMI), uric acid, metabolic syndrome, smoking, and drinking (adjusted OR = 2.18, 95% CI: 0.96–4.99, P = 0.06). In the obese group, the AA + AG genotypes of rs1121980 and rs9940128 were associated with a decreased risk of NAFLD, when compared with the GG genotype, respectively (rs1121980: adjusted OR = 0.62, 95% CI = 0.39–0.99, P = 0.044; rs9940128: adjusted OR = 0.61, 95% CI = 0.38–0.97, P = 0.038). Furthermore, rs1477196 was associated with the severity of NAFLD (OR = 2.95, 95% CI = 1.09–7.94, P = 0.034). Conclusions Our results demonstrated that the FTO gene was related to the presence and severity of NAFLD in a Chinese male population, and the relationships of the tested SNPs with NAFLD are most probably mediated by BMI.
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Affiliation(s)
- Xuefen Chen
- Department of chemotherapy, The Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi, 530021, China
| | - Yong Gao
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi, 530021, China
| | - Xiaobo Yang
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi, 530021, China
| | - Haiying Zhang
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi, 530021, China
| | - Zengnan Mo
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi, 530021, China
| | - Aihua Tan
- Department of chemotherapy, The Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi, 530021, China
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5
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de Soysa AKH, Langaas M, Jakic A, Shojaee-Moradie F, Umpleby AM, Grill V, Mostad IL. The fat mass and obesity-associated (FTO) gene allele rs9939609 and glucose tolerance, hepatic and total insulin sensitivity, in adults with obesity. PLoS One 2021; 16:e0248247. [PMID: 33684170 PMCID: PMC7939351 DOI: 10.1371/journal.pone.0248247] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 02/23/2021] [Indexed: 12/02/2022] Open
Abstract
The objective of the study was to assess associations of the rs9939609 FTO allele to glucose tolerance, hepatic and total insulin sensitivity (IS) in individuals with obesity. From a low-dose hyperinsulinemic euglycemic clamp with glucose-tracer, hepatic IS was assessed by rates of basal and suppressed glucose appearance (Ra), a measure of endogenous glucose production (EGP), and the hepatic insulin resistance index (HIR). Total IS was assessed by rates of glucose infusion (GIR), disappearance (Rd), and metabolic clearance (MCR). From a meal test we assessed IS by the Matsuda index and glucose tolerance by glucose and insulin measurements in the fasted state and postprandially for 2.5 h. The meal test was performed in 97 healthy individuals with BMI ≥35 in similar-sized risk-allele groups (n = 32 T/T, 31 A/T, and 34 A/A), and 79 of them performed the clamp. We analyzed outcomes separately for males and females, and adjusted glucose Ra, Rd, MCR, GIR, and HIR for fat mass. We did not find genotype effects on EGP. Among males, genotype A/A was associated with a significantly lower glucose Rd, MCR, and Matsuda index score relative to genotype T/T. Glucose tolerance was significantly lower in males with genotype A/T vs. T/T and A/A. For females, there were no genotype effects on hepatic or total IS, or on glucose tolerance. Independently of genotypes, females displayed a significantly better hepatic and total IS, and better glucose tolerance than males. We conclude that in subjects with similar obesity we did not register any FTO risk-allele effect on hepatic IS. A FTO risk-allele effect on total IS was registered in males only, findings which need to be reproduced in further studies. Results confirm marked differences in IS between the biological sexes and extend present knowledge by demonstrating a lower endogenous glucose production in females vs. males in uniformly obese individuals.
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Affiliation(s)
- Ann Kristin Hjelle de Soysa
- Department of Clinical Nutrition and Speech-Language Therapy, Clinic of Clinical Services, St. Olavs Hospital - Trondheim University Hospital, Trondheim, Norway
- Faculty of Medicine and Health Sciences, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- * E-mail:
| | - Mette Langaas
- Faculty of Information Technology and Electrical Engineering, Department of Mathematical Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - Anida Jakic
- Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | | | - A. Margot Umpleby
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
| | - Valdemar Grill
- Faculty of Medicine and Health Sciences, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Ingrid Løvold Mostad
- Department of Clinical Nutrition and Speech-Language Therapy, Clinic of Clinical Services, St. Olavs Hospital - Trondheim University Hospital, Trondheim, Norway
- Faculty of Medicine and Health Sciences, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
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6
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Ali EMM, Diab T, Elsaid A, Abd El Daim HA, Elshazli RM, Settin A. Fat mass and obesity-associated ( FTO) and leptin receptor ( LEPR) gene polymorphisms in Egyptian obese subjects. Arch Physiol Biochem 2021; 127:28-36. [PMID: 30767572 DOI: 10.1080/13813455.2019.1573841] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Several studies addressed the contribution of fat mass and obesity-associated (FTO) and leptin receptor (LEPR) polymorphisms for the susceptibility to obesity among different ethnic subjects. The main purpose of this work is to evaluate the association of these polymorph\isms with obesity among Egyptian subjects. SUBJECTS AND METHODS This case-control study was carried out on 110 unrelated obese Egyptian subjects who were compared with 122 controls. Their genomic DNA was genotyped using the PCR technique. RESULTS The allelic frequencies of FTO rs9939609 (A) and LEPR rs1137101 (223R) were significantly higher in obese subjects compared with non-obese controls (p < .001). Comparing different phenotype frequencies including clinical, anthropometric, and biochemical parameters in obese subjects revealed no significant difference in relation to their genotype frequencies (p> .05). CONCLUSIONS This study designates a strong association for FTO and LEPR variants with the risk of obesity among Egyptian subjects.
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Affiliation(s)
- Ehab M M Ali
- Department of Chemistry, Biochemistry Section, Faculty of Science, Tanta University, Tanta, Egypt
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Thoria Diab
- Department of Chemistry, Biochemistry Section, Faculty of Science, Tanta University, Tanta, Egypt
| | - Afaf Elsaid
- Genetic Unit, Children Hospital, Mansoura University, Mansoura, Egypt
| | - Hamada A Abd El Daim
- Department of Chemistry, Biochemistry Section, Faculty of Science, Tanta University, Tanta, Egypt
| | - Rami M Elshazli
- Department of Biochemistry, College of Physical Therapy, Horus University - Egypt (HUE), New Damietta, Egypt
| | - Ahmad Settin
- Genetic Unit, Children Hospital, Mansoura University, Mansoura, Egypt
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7
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Mehrdad M, Doaei S, Gholamalizadeh M, Fardaei M, Fararouei M, Eftekhari MH. Association of FTO rs9939609 polymorphism with serum leptin, insulin, adiponectin, and lipid profile in overweight adults. Adipocyte 2020; 9:51-56. [PMID: 31996075 PMCID: PMC6999843 DOI: 10.1080/21623945.2020.1722550] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
FTO gene polymorphisms are associated with obesity and food intake. This study aimed to investigate the association of FTO rs9939609 polymorphism genotypes with serum glucose, lipid profile and serum hormones level. This cross-sectional study was carried out on 196 randomly selected overweight adults. Anthropometric measurements including weight, height, body mass index (BMI), fat mass, and fat-free mass were assessed. Serum TGs, total cholesterol, HDL cholesterol, LDL cholesterol, glucose and insulin levels were measured. The FTO gene was Genotyped for rs9939609 polymorphism. Dietary intake was assessed by avalid 168-item semi-quantitative food frequency questionnaire (FFQ). The homozygotes for the FTO rs9939609 risk allele (A) had higher serum leptin (p = 0.005, F: 5.131) and lower HDL (p = 0.001, F: 7.687) level than TT genotype. The differences between TT and AT genotypes were not significant. The association remained significant for HDL level after adjustments for age and sex, calorie intake, physical activity, and BMI. The association between rs9939609 polymorphism genotypes and leptin was disappeared after adjustments for calorie intake and physical activity. In conclusion, rs9939609 risk allele was associated with higher serum leptin and lower HDL levels in overweight people. Further studies are warranted.
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Affiliation(s)
- Mahsa Mehrdad
- Department of Clinical Nutrition, School of Nutrition & Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Saeid Doaei
- Student Research Committee, Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Research Center of Health and Environment, Guilan University of Medical Sciences, Rasht, Iran
| | - Maryam Gholamalizadeh
- Student Research Committee, Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Majid Fardaei
- Department of Medical Genetics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Fararouei
- HIV/AIDs Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Hassan Eftekhari
- Department of Clinical Nutrition, School of Nutrition & Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
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8
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Rana S, Bhatti AA. Association and interaction of the FTO rs1421085 with overweight/obesity in a sample of Pakistani individuals. Eat Weight Disord 2020; 25:1321-1332. [PMID: 31468339 DOI: 10.1007/s40519-019-00765-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 08/06/2019] [Indexed: 12/31/2022] Open
Abstract
PURPOSE Genetic variants determine the predisposition of an individual to obesity in a given environment. The present study was conducted to seek an association of the FTO variant rs1421085 with overweight/obesity and related traits in 612 Pakistani subjects in a case-control manner (overweight/obese = 306 and non-obese = 306). Moreover, interaction effects of the rs1421085 and overweight/obesity on multiple metabolic traits were also investigated, which were never explored before in Pakistani as well as in any other population. MATERIALS AND METHODS Anthropometric traits were measured by standard procedures, while metabolic parameters were determined by biochemical assays. Genotyping of the rs1421085 was carried out by TaqMan allelic discrimination assay. The data were analysed using SPSS software version 19. RESULTS The study revealed a significant association of the rs1421085 with overweight/obese phenotype with respect to over-dominant model indicated by h-index. The CT genotype of the rs1421085 was observed to increase the risk of being overweight/obese by 1.583 times (95% CI 1.147-2.185, p = 0.005). The CT genotype was also found to be associated with higher values of all anthropometric variables (except height and waist-to-hip ratio). Moreover, the interaction between the CT genotype of the rs1421085 and overweight/obesity was found to influence several metabolic parameters (raised blood pressure, product of triglyceride and glucose index, triglyceride levels, LDL-C, VLDL-C, coronary risk index, atherogenic index, and triglyceride-to-HDL-C ratio). CONCLUSION In conclusion, the rs1421085 was found to be associated with overweight/obesity and related anthropometric traits independent of age and gender in Pakistani population. Moreover, this variant was found to influence various metabolic traits in the presence of overweight/obesity. LEVEL OF EVIDENCE Level III, case-control analytic study.
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Affiliation(s)
- Sobia Rana
- Dr. Panjwani Center for Molecular Medicine and Drug Research (PCMD), International Center for Chemical and Biological Sciences (ICCBS), University of Karachi, Karachi, 75270, Pakistan.
| | - Adil Anwar Bhatti
- Dr. Panjwani Center for Molecular Medicine and Drug Research (PCMD), International Center for Chemical and Biological Sciences (ICCBS), University of Karachi, Karachi, 75270, Pakistan
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9
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Kechida M. Cardio-metabolic risk factors in Tunisia: state of the art. Intern Emerg Med 2020; 15:537-542. [PMID: 31388892 DOI: 10.1007/s11739-019-02164-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 07/27/2019] [Indexed: 11/25/2022]
Abstract
Cardiometabolic risk factors in Tunisia are growing fast. The main risk factor is metabolic syndrome which is a global health issue in both developing and developed countries. It is resulting from a new phase of epidemiological transition characterised by ageing and an increase in non-communicable diseases. It is common in both genders with some disparities between urban and rural regions, educational levels and social classes. Hypertension and diabetes are also additional risk factors predicting alarming mortality rates. We propose here a review of the determinants of metabolic syndrome in Tunisia and the overall cardiometabolic risk factors.
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Affiliation(s)
- Melek Kechida
- Internal Medicine and Endocrinology Department, Fattouma Bourguiba University Hospital, University of Monastir, Monastir, Tunisia.
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10
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Nagrani R, Foraita R, Gianfagna F, Iacoviello L, Marild S, Michels N, Molnár D, Moreno L, Russo P, Veidebaum T, Ahrens W, Marron M. Common genetic variation in obesity, lipid transfer genes and risk of Metabolic Syndrome: Results from IDEFICS/I.Family study and meta-analysis. Sci Rep 2020; 10:7189. [PMID: 32346024 PMCID: PMC7188794 DOI: 10.1038/s41598-020-64031-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 04/07/2020] [Indexed: 12/13/2022] Open
Abstract
As the prevalence of metabolic syndrome (MetS) in children and young adults is increasing, a better understanding of genetics that underlie MetS will provide critical insights into the origin of the disease. We examined associations of common genetic variants and repeated MetS score from early childhood to adolescence in a pan-European, prospective IDEFICS/I.Family cohort study with baseline survey and follow-up examinations after two and six years. We tested associations in 3067 children using a linear mixed model and confirmed the results with meta-analysis of identified SNPs. With a stringent Bonferroni adjustment for multiple comparisons we obtained significant associations(p < 1.4 × 10−4) for 5 SNPs, which were in high LD (r2 > 0.85) in the 16q12.2 non-coding intronic chromosomal region of FTO gene with strongest association observed for rs8050136 (effect size(β) = 0.31, pWald = 1.52 × 10−5). We also observed a strong association of rs708272 in CETP with increased HDL (p = 5.63 × 10−40) and decreased TRG (p = 9.60 × 10−5) levels. These findings along with meta-analysis advance etiologic understanding of childhood MetS, highlighting that genetic predisposition to MetS is largely driven by genes of obesity and lipid metabolism. Inclusion of the associated genetic variants in polygenic scores for MetS may prove to be fundamental for identifying children and subsequently adults of the high-risk group to allow earlier targeted interventions.
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Affiliation(s)
- Rajini Nagrani
- Leibniz Institute for Prevention Research and Epidemiology - BIPS, Bremen, Germany.
| | - Ronja Foraita
- Leibniz Institute for Prevention Research and Epidemiology - BIPS, Bremen, Germany
| | - Francesco Gianfagna
- Mediterranea Cardiocentro, Napoli, Italy.,EPIMED Research Center, Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Licia Iacoviello
- IRCCS Istituto Neurologico Mediterraneo Neuromed, Pozzilli, Italy
| | - Staffan Marild
- Department of Paediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Nathalie Michels
- Department of Public Health and Primary Care, Ghent University, 9000, Ghent, Belgium
| | - Dénes Molnár
- Department of Paediatrics, Medical School, University of Pécs, Pécs, Hungary
| | - Luis Moreno
- GENUD (Growth, Exercise, Nutrition, and Development) Research Group, University of Zaragoza, Zaragoza, Spain
| | - Paola Russo
- Institute of Food Sciences, National Research Council, Avellino, Italy
| | | | - Wolfgang Ahrens
- Leibniz Institute for Prevention Research and Epidemiology - BIPS, Bremen, Germany.,Institute of Statistics, Faculty of Mathematics and Computer Science, Bremen University, Bremen, Germany
| | - Manuela Marron
- Leibniz Institute for Prevention Research and Epidemiology - BIPS, Bremen, Germany
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Al Ali M, El hajj Chehadeh S, Osman W, Almansoori K, Abdulrahman M, Tay G, Alsafar H. Investigating the association of rs7903146 of TCF7L2 gene, rs5219 of KCNJ11 gene, rs10946398 of CDKAL1 gene, and rs9939609 of FTO gene with type 2 diabetes mellitus in Emirati population. Meta Gene 2019. [DOI: 10.1016/j.mgene.2019.100600] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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12
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Noubiap JJ, Mato EPM, Guewo-Fokeng M, Kaze AD, Boulenouar H, Wonkam A. Genetic Determinants of Dyslipidemia in African-Based Populations: A Systematic Review. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2019; 22:749-758. [PMID: 30571611 DOI: 10.1089/omi.2018.0158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Identification of genetic/genomic factors contributing to dyslipidemia is of great interest to prevention and reduction of the onset and burden of cardiovascular diseases in Africa. This systematic review summarizes available data on genetic variants associated with dyslipidemia in populations within Africa. A PubMed and EMBASE database search was conducted to identify all studies published until June 2018 on genetic susceptibility to dyslipidemia in African-based populations, excluding familial hypercholesterolemia. All studies on genetic predispositions of dyslipidemia and respecting the preestablished inclusion criteria were included in this systematic review. Because of high heterogeneity, the data were summarized narratively. Twenty-two studies investigated mostly the targeted genetic variants. A total of 51 polymorphisms in 28 susceptibility genes to dyslipidemia have been associated with a particular trait in the African populations, and through variable effects. Most polymorphisms investigated in Northern Africa seemed to have consistent effects on increasing the level of low-density lipoprotein cholesterol (LDL-C), total cholesterol, and triglycerides in patients with diabetes, myocardial infarction, coronary artery disease, and metabolic syndrome. By contrast, only Ser447Ter and C49620T variants were associated with increased LDL-C in sub-Saharan Africa. Despite few studies available in this context in the literature, certain genetic variants were consistently associated with dyslipidemia especially in Northern Africa as highlighted in this analysis. Further data, particularly from genome-wide association studies, would help establish an African-specific reference for genetic susceptibility markers of dyslipidemia.
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Affiliation(s)
- Jean Jacques Noubiap
- 1 Department of Medicine, University of Cape Town and Groote Schuur Hospital, Cape Town, South Africa
| | - Edith Pascale M Mato
- 2 Molecular and Clinical Research Laboratory, Department of Pharmacology, University of Kwazulu-Natal, Durban, South Africa
| | - Magellan Guewo-Fokeng
- 3 Department of Biochemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
| | - Arnaud D Kaze
- 4 Department of Medicine, University of Maryland Medical Center Midtown Campus, Baltimore, Maryland
| | - Houssam Boulenouar
- 5 Laboratoire de Génétique Moléculaire et Cellulaire, Université des Sciences et de Technologie d'Oran Mohamed Boudiaf, Oran, Algeria.,6 Département de Médecine, Faculté de Médecine Dr Benzerdjeb Benaouda, Université Aboubekr Belkaid-Tlemcen, Tlemcen, Algeria.,7 Laboratoire Cancer Lab No. 30, Faculté de Médecine Dr. Benzerdjeb Benaouda Université Aboubekr Belkaid-Tlemcen, Tlemcen, Algeria
| | - Ambroise Wonkam
- 8 Division of Human Genetics, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
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Zhang Y, Whaley-Connell AT, Sowers JR, Ren J. Autophagy as an emerging target in cardiorenal metabolic disease: From pathophysiology to management. Pharmacol Ther 2018; 191:1-22. [PMID: 29909238 PMCID: PMC6195437 DOI: 10.1016/j.pharmthera.2018.06.004] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 06/05/2018] [Indexed: 12/16/2022]
Abstract
Although advances in medical technology and health care have improved the early diagnosis and management for cardiorenal metabolic disorders, the prevalence of obesity, insulin resistance, diabetes, hypertension, dyslipidemia, and kidney disease remains high. Findings from numerous population-based studies, clinical trials, and experimental evidence have consolidated a number of theories for the pathogenesis of cardiorenal metabolic anomalies including resistance to the metabolic action of insulin, abnormal glucose and lipid metabolism, oxidative and nitrosative stress, endoplasmic reticulum (ER) stress, apoptosis, mitochondrial damage, and inflammation. Accumulating evidence has recently suggested a pivotal role for proteotoxicity, the unfavorable effects of poor protein quality control, in the pathophysiology of metabolic dysregulation and related cardiovascular complications. The ubiquitin-proteasome system (UPS) and autophagy-lysosomal pathways, two major although distinct cellular clearance machineries, govern protein quality control by degradation and clearance of long-lived or damaged proteins and organelles. Ample evidence has depicted an important role for protein quality control, particularly autophagy, in the maintenance of metabolic homeostasis. To this end, autophagy offers promising targets for novel strategies to prevent and treat cardiorenal metabolic diseases. Targeting autophagy using pharmacological or natural agents exhibits exciting new strategies for the growing problem of cardiorenal metabolic disorders.
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Affiliation(s)
- Yingmei Zhang
- Shanghai Institute of Cardiovascular Diseases, Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China; Center for Cardiovascular Research and Alternative Medicine, University of Wyoming College of Health Sciences, Laramie, WY 82071, USA.
| | - Adam T Whaley-Connell
- Research Service, Harry S Truman Memorial Veterans' Hospital, University of Missouri-Columbia School of Medicine, Columbia, MO, USA; Diabetes and Cardiovascular Center, Department of Medicine, University of Missouri-Columbia School of Medicine, Columbia, MO, USA
| | - James R Sowers
- Research Service, Harry S Truman Memorial Veterans' Hospital, University of Missouri-Columbia School of Medicine, Columbia, MO, USA; Diabetes and Cardiovascular Center, Department of Medicine, University of Missouri-Columbia School of Medicine, Columbia, MO, USA
| | - Jun Ren
- Shanghai Institute of Cardiovascular Diseases, Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China; Center for Cardiovascular Research and Alternative Medicine, University of Wyoming College of Health Sciences, Laramie, WY 82071, USA.
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Tarnowski M, Bujak J, Kopytko P, Majcher S, Ustianowski P, Dziedziejko V, Safranow K, Pawlik A. Effect of FTO and IGF2BP2 gene polymorphisms on duration of pregnancy and Apgar scores in women with gestational diabetes. J OBSTET GYNAECOL 2018; 39:151-156. [DOI: 10.1080/01443615.2018.1502263] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Maciej Tarnowski
- Department of Physiology, Pomeranian Medical University, Szczecin, Poland
| | - Joanna Bujak
- Department of Physiology, Pomeranian Medical University, Szczecin, Poland
| | - Patrycja Kopytko
- Department of Physiology, Pomeranian Medical University, Szczecin, Poland
| | - Sandra Majcher
- Department of Physiology, Pomeranian Medical University, Szczecin, Poland
| | - Przemysław Ustianowski
- Department of Perinatology, Obstetrics and Gynecology, Pomeranian Medical University, Police, Poland
| | - Violetta Dziedziejko
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Szczecin, Poland
| | - Krzysztof Safranow
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Szczecin, Poland
| | - Andrzej Pawlik
- Department of Physiology, Pomeranian Medical University, Szczecin, Poland
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Małgorzata S, Jacek B, Jerzy OA, Piotr C, Anna J, Elżbieta G. Searching for Factors Raising the Incidence of Metabolic Syndrome Among 45-60-Year-Old Women. Aging Dis 2018; 9:831-842. [PMID: 30271660 PMCID: PMC6147583 DOI: 10.14336/ad.2017.1027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 10/27/2017] [Indexed: 12/28/2022] Open
Abstract
Metabolic syndrome is an increasing health problem, whose pathogenesis may be associated with genetic factors. The main purpose of our study was to assess relationships between MetS and the presence of the FTO rs9939609, the MC4R rs17782313, and the PPAR-γ rs1801282 polymorphisms in 45-60-year-old women. The study included patients from the general population of the Westpomeranian Province (Poland). The mean age was 54.3 ± 4.2 years. The research procedure involved taking structured history, physical examination, anthropometric measurements, and collecting blood for biochemical and genetic analysis. The patients who met the diagnostic criteria for MetS constituted 38.35% of all participants (sample size: 425 patients). The comparison of blood biochemical parameters revealed numerous differences between the women with MetS and those from the control group. Genetic analysis demonstrated that the T allele of the FTO gene was a factor substantially decreasing the incidence of MetS in the study sample (ORT vs. A = 0.734; 95% CI: 0.555 - 0.970; p < 0.05). Other polymorphisms were not directly related to MetS incidence. CONCLUSIONS 1. MetS-related abnormalities are widespread in the population of 45-60-year-old Polish women. Those most common are the elevated serum total cholesterol and LDL levels, increased insulin resistance and BMI scores, as well as visceral obesity. 2. No direct relationships were demonstrated between MetS and the gene polymorphisms analyzed in our study except for the FTO rs9939609, whose A allele and A/A genotype seemed to predispose to metabolic disorders.
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Affiliation(s)
- Szkup Małgorzata
- Department of Nursing, Pomeranian Medical University in Szczecin, Szczecin, Poland
| | - Brodowski Jacek
- Primary Care Department, Pomeranian Medical University in Szczecin, Szczecin, Poland
| | - Owczarek Aleksander Jerzy
- Department of Statistics, Department of Instrumental Analysis, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Katowice, Poland
| | - Choręza Piotr
- Department of Statistics, Department of Instrumental Analysis, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Katowice, Poland
| | - Jurczak Anna
- Department of Clinical Nursing, Pomeranian Medical University in Szczecin, Szczecin, Poland
| | - Grochans Elżbieta
- Department of Nursing, Pomeranian Medical University in Szczecin, Szczecin, Poland
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Ben Halima M, Kallel A, Baara A, Ben Wafi S, Sanhagi H, Slimane H, Jemaa R, Feki M. The rs9939609 polymorphism in the fat mass and obesity associated (FTO) gene is associated with obesity in Tunisian population. Biomarkers 2018; 23:787-792. [PMID: 30041557 DOI: 10.1080/1354750x.2018.1499129] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
CONTEXT Variations in the fat mass and obesity-associated gene (FTO) has been associated with obesity in many populations, but the results are conflicting. OBJECTIVE The aim of this study was to evaluate the effect of the rs9939609 polymorphism in the FTO gene on obesity risk and plasma leptin, adiponectin, insulin and lipid concentrations in Tunisians. MATERIALS AND METHODS Four hundred and ninety-four subjects with obesity and 334 non-obese participated in this study. The rs9939609 (T/A) genotype was determined by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. RESULTS Significant differences in genotype frequencies were observed between cases and controls. In the separate analysis by gender, the association between the AA genotype and obesity was statistically significant in women but not in men. After stratification by obesity class this association remains only with obesity class III. DISCUSSION Our study is in agreement with studies on Caucasian, Portuguese and Cebu Filipino populations where a gender-specific association was found between rs9939609 polymorphism and obesity. It is also in agreement with studies on Mexican, Spanish and European populations, where an association was found with obesity class III. CONCLUSION The rs9939609 polymorphism of FTO gene is associated with obesity, especially obesity class III in women.
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Affiliation(s)
- Meriam Ben Halima
- a Laboratory of Biochemistry, Faculty of Medicine of Tunis , University of Tunis El Manar, Rabta Hospital , Tunis , Tunisia.,b Faculty of Sciences of Tunis , University of Tunis El Manar , Tunis , Tunisia
| | - Amani Kallel
- a Laboratory of Biochemistry, Faculty of Medicine of Tunis , University of Tunis El Manar, Rabta Hospital , Tunis , Tunisia
| | - Abir Baara
- a Laboratory of Biochemistry, Faculty of Medicine of Tunis , University of Tunis El Manar, Rabta Hospital , Tunis , Tunisia
| | - Safa Ben Wafi
- a Laboratory of Biochemistry, Faculty of Medicine of Tunis , University of Tunis El Manar, Rabta Hospital , Tunis , Tunisia.,b Faculty of Sciences of Tunis , University of Tunis El Manar , Tunis , Tunisia
| | - Haifa Sanhagi
- a Laboratory of Biochemistry, Faculty of Medicine of Tunis , University of Tunis El Manar, Rabta Hospital , Tunis , Tunisia
| | - Hedia Slimane
- c Department of Endocrinology , Rabta Hospital , Tunis , Tunisia
| | - Riadh Jemaa
- a Laboratory of Biochemistry, Faculty of Medicine of Tunis , University of Tunis El Manar, Rabta Hospital , Tunis , Tunisia
| | - Moncef Feki
- a Laboratory of Biochemistry, Faculty of Medicine of Tunis , University of Tunis El Manar, Rabta Hospital , Tunis , Tunisia
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Gao L, Wu L, Zhang M, Zhao X, Cheng H, Mi J. Gender-specific association of the rs6499640 polymorphism in the FTO gene with plasma lipid levels in Chinese children. Genet Mol Biol 2018; 41:397-402. [PMID: 29870569 PMCID: PMC6082231 DOI: 10.1590/1678-4685-gmb-2017-0107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 10/25/2017] [Indexed: 11/25/2022] Open
Abstract
The fat mass- and obesity-associated gene (FTO) is significantly
associated with obesity, but the associations of FTO with
obesity-related traits are not fully described. We aimed to investigate the
association of the FTO single nucleotide polymorphism (SNP)
rs6499640 with lipid levels in Chinese children. A total of 3503 children aged
6-18 years were included in the present study. Lipid levels were analyzed and
the SNP rs6499640 was genotyped using the TaqMan Allelic Discrimination Assay.
Statistically significant associations were found between rs6499640 and
low-density lipoprotein cholesterol (LDL-C) (p = 0.008), total
cholesterol (TC) (p = 0.005), and triglycerides (TG)
(p < 0.001) in girls under a dominant model adjusted for
age and BMI. No statistical significance was found between the SNP and lipid
levels in boys. We demonstrated for the first time that the SNP rs6499640 in
FTO is associated with LDL-C, TC, and TG in Chinese girls.
Our study identified a new risk locus for lipid levels in children.
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Affiliation(s)
- Liwang Gao
- Department of Epidemiology, Capital Institute of Pediatrics, Beijing, China
| | - Lijun Wu
- Department of Epidemiology, Capital Institute of Pediatrics, Beijing, China
| | - Meixian Zhang
- Department of Epidemiology, Capital Institute of Pediatrics, Beijing, China
| | - Xiaoyuan Zhao
- Department of Epidemiology, Capital Institute of Pediatrics, Beijing, China
| | - Hong Cheng
- Department of Epidemiology, Capital Institute of Pediatrics, Beijing, China
| | - Jie Mi
- Department of Epidemiology, Capital Institute of Pediatrics, Beijing, China
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Khella MS, Hamdy NM, Amin AI, El-Mesallamy HO. The (FTO) gene polymorphism is associated with metabolic syndrome risk in Egyptian females: a case- control study. BMC MEDICAL GENETICS 2017; 18:101. [PMID: 28915859 PMCID: PMC5603034 DOI: 10.1186/s12881-017-0461-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/25/2017] [Accepted: 09/08/2017] [Indexed: 02/07/2023]
Abstract
Background Variations within fat mass and obesity associated (FTO) gene had crosstalk with obesity risk in European and some Asian populations. This study was designed to investigate FTO rs9939609 association with metabolic syndrome (MetS) as well as biochemical parameters as plasma glucose, serum triacylglycerol (TAG), total cholesterol (TC) and transaminases enzymes in Arab female population from Egypt. Methods In order to achieve that, FTO gene rs9939609 (A < T) was genotyped using TaqMan SNP Genotyping Assay in a total of 197 females which were enrolled in this study. Fasting levels of serum insulin, lipid profile and plasma glucose, in addition to liver transaminases were measured. The association between the genotype distribution and MetS risk was evaluated using Chi-square and logistic regression tests in a case-control design under different genetic models. Results The association of genotype distribution with MetS was significant (χ2 = 8.6/P = 0.014) with an increased odds ratio under dominant model (OR = 1.97, P = 0.029 and 95%C.I = 1.07–3.6) and recessive model (OR = 2.95, P = 0.017 and 95%C.I = 1.22–7.22). Moreover, (AA) subjects showed significant lower HDL-C levels (P = 0.009) when compared to (TT) ones. In addition, interestingly subjects with (AA) genotype have significantly higher ALT levels (P = 0.02) that remained significant after correction of major confounders as body mass index and serum triacylglycerols but not after conservative Bonferroni adjustment. Conclusions The present study shows for first time that FTO gene rs9939609 is genetic risk factor for metabolic syndrome in Egyptian population which may help in understanding the biology of this complex syndrome and highlighted that this association may be through HDL-C component. The association of this genetic polymorphism with ALT levels needs to be studied in other populations with larger sample size.
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Affiliation(s)
- Mina S Khella
- Biochemistry Department, Faculty of Pharmacy, Ain Shams University, African Union Organization Street, Abbassia, Cairo, 11566, Egypt
| | - Nadia M Hamdy
- Biochemistry Department, Faculty of Pharmacy, Ain Shams University, African Union Organization Street, Abbassia, Cairo, 11566, Egypt
| | - Ashraf I Amin
- Clinical Pathology and Laboratory Department, National Institute of Diabetes and Endocrinology (NIDE), Cairo, Egypt
| | - Hala O El-Mesallamy
- Biochemistry Department, Faculty of Pharmacy, Ain Shams University, African Union Organization Street, Abbassia, Cairo, 11566, Egypt.
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Lakbakbi El Yaagoubi F, Charoute H, Morjane I, Sefri H, Rouba H, Ainahi A, Kandil M, Benrahma H, Barakat A. Association analysis of genetic variants with metabolic syndrome components in the Moroccan population. Curr Res Transl Med 2017; 65:121-125. [DOI: 10.1016/j.retram.2017.08.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 07/17/2017] [Accepted: 08/09/2017] [Indexed: 12/17/2022]
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20
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Association of apolipoprotein A5 gene variants with metabolic syndrome in Tunisian population. ANNALES D'ENDOCRINOLOGIE 2017. [DOI: 10.1016/j.ando.2017.01.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Yang Q, Xiao T, Guo J, Su Z. Complex Relationship between Obesity and the Fat Mass and Obesity Locus. Int J Biol Sci 2017; 13:615-629. [PMID: 28539834 PMCID: PMC5441178 DOI: 10.7150/ijbs.17051] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Accepted: 03/24/2017] [Indexed: 12/15/2022] Open
Abstract
In the 21st century, obesity has become a serious problem because of increasing obese patients and numerous metabolic complications. The primary reasons for this situation are environmental and genetic factors. In 2007, FTO (fat mass and obesity associated) was the first gene identified through a genome-wide association study (GWAS) associated with obesity in humans. Subsequently, a cluster of single nucleotide polymorphisms (SNPs) in the first intron of the FTO gene was discovered to be associated with BMI and body composition. Various studies have explored the mechanistic basis behind this association. Thus, emerging evidence showed that FTO plays a key role regulating adipose tissue development and functions in body size and composition. Recent prevalent research topic concentrated in the three neighboring genes of FTO: RPGRIP1L, IRX3 and IRX5, as having a functional link between obesity-associated common variants within FTO and the observed human phenotypes. The purpose of this review is to present a comprehensive picture of the impact of FTO on obesity susceptibility and to illuminate these new studies of FTO function in adipose tissue.
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Affiliation(s)
- Qingyun Yang
- Key Research Center of Liver Regulation for Hyperlipidemia SATCM/Class III Laboratory of Metabolism SATCM, Guangdong TCM Key Laboratory for Metabolic Diseases, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Tiancun Xiao
- Inorganic Chemistry Laboratory, Oxford University, South Parks Road, OX1 3QR, United Kingdom.,Guangzhou Boxabio Technology Ltd, Guangzhou Science City, P R China
| | - Jiao Guo
- Key Research Center of Liver Regulation for Hyperlipidemia SATCM/Class III Laboratory of Metabolism SATCM, Guangdong TCM Key Laboratory for Metabolic Diseases, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Zhengquan Su
- Key Research Center of Liver Regulation for Hyperlipidemia SATCM/Class III Laboratory of Metabolism SATCM, Guangdong TCM Key Laboratory for Metabolic Diseases, Guangdong Pharmaceutical University, Guangzhou, 510006, China
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Barning F, Abarin T. Assessing the Causality Factors in the Association between (Abdominal) Obesity and Physical Activity among the Newfoundland Population-A Mendelian Randomization Analysis. GENETICS & EPIGENETICS 2016; 8:15-24. [PMID: 27478388 PMCID: PMC4959453 DOI: 10.4137/geg.s38289] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 03/28/2016] [Accepted: 03/30/2016] [Indexed: 01/22/2023]
Abstract
A total of 1,263 adults from Newfoundland and Labrador were studied in the research. Body mass index (BMI) and percent trunk fat (PTF) were analyzed as biomarkers for obesity. The Mendelian randomization (MR) approach with two single-nucleotide polymorphisms in the fat-mass and obesity (FTO) gene as instruments was employed to assess the causal effect. In both genders, increasing physical activity significantly reduced BMI and PTF when adjusted for age and the FTO gene. The effect of physical activity was stronger on PTF than BMI. Direct observational analyses showed significant increase in BMI/PTF when physical activity decreased. A similar association in MR analyses was not significant. The association between physical activity and BMI/PTF could be due to reversed causality or common confounding factors. Our study provides insights into the causal contributions of obesity to physical activity in adults. Health intervention strategies to increase physical activity among adults should include some other plans such as improving diet for reducing obesity.
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Affiliation(s)
- Frank Barning
- Department of Mathematics and Statistics, Memorial University of Newfoundland, Canada
| | - Taraneh Abarin
- Department of Mathematics and Statistics, Memorial University of Newfoundland, Canada
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