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Association between adiponectin rs17300539 and rs266729 gene polymorphisms with serum adiponectin level in an Iranian diabetic/pre-diabetic population. Endocr Regul 2019; 52:176-184. [PMID: 31517610 DOI: 10.2478/enr-2018-0022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
OBJECTIVE Adiponectin is an adipokine that is mostly secreted from adipose tissues and has a significant role in the improvement of insulin resistant and type 2 diabetes mellitus (T2DM). This study is conducted to examine the association of rs17300539 and rs266729 with T2DM and serum adiponectin level in Iranian population. METHOD A case-control study was conducted on 80 individuals with fasting plasma glucose (FPG) >100 (mg/dl) as diabetic-pre-diabetic group, and 80 individuals with fasting plasma glucose 70-100 (mg/dl) as control group. DNA extraction was done on samples and genotyping method was performed by PCR-RFLP. RESULT The frequency of GA genotype in rs17300539 (diabetic/pre-diabetic 35.5%, control 11.3%, (OR [95%CI]=4.18[1.8-9.6]; p=0.001) and allele A (diabetic/pre-diabetic 31%, control 9%, (OR [95% CI]=4.67[2-10.7]) was significantly more in diabetic/pre-diabetic group compared to control group. The difference in the genotype frequency for rs266729 in diabetic group compared to that in control was not significant. The levels of adiponectin in diabetic cases had no difference compared to the control group in both polymorphisms. The rs266729 was not associated with any metabolic parameter except waist circumference (p=0.03), however, rs17300539 shows association only with fasting plasma glucose, triglyceride, and total cholesterol (p=0.007, 0.039, 0.0032, respectively). CONCLUSION Our findings showed that there is an association between rs17300539 with the increase of T2DM but rs266729 showed no association with the risk of T2DM. Allele A of rs17300539 increased the risk of diabetes. There is no association between adiponectin level and both polymorphisms.
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Nascimento H, Vieira E, Coimbra S, Catarino C, Costa E, Bronze-da-Rocha E, Rocha-Pereira P, Carvalho M, Ferreira Mansilha H, Rêgo C, Dos Santos R, Santos-Silva A, Belo L. Adipokine Gene Single-Nucleotide Polymorphisms in Portuguese Obese Adolescents: Associations with Plasma Concentrations of Adiponectin, Resistin, IL-6, IL-1β, and TNF-α. Child Obes 2016; 12:300-13. [PMID: 27159547 DOI: 10.1089/chi.2015.0235] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
BACKGROUND The genetic contribution to obesity and to circulating adipokine levels has not been completely clarified. We aimed to evaluate adipokine genes' single-nucleotide polymorphism (SNP) prevalence and its association with circulating adipokine levels and risk factors for cardiovascular disease in an obese Portuguese pediatric population. METHODS Two hundred forty-eight obese adolescents (mean age 13.4 years old; 47.2% females) participated in a cohort study. We screened 12 SNPs by direct sequencing in five adipokine genes: adiponectin (ADIPOQ: rs16861194, rs17300539, rs266729, rs2241766, rs1501299), interleukin-1β (IL-1β; rs1143627), IL-6 (IL-6; rs1800795), tumor necrosis factor-α (TNF-α; rs1800629), and resistin (RETN; rs1862513, rs3219177, rs3745367, rs3745368). Biochemical analysis included determination of circulating adipokines, C-reactive protein (CRP) levels, lipid profile, and markers of insulin resistance. RESULTS Compared to males, females presented higher circulating levels of insulin, adiponectin, IL-6, resistin, and leptin concentrations, but lower TNF-α levels. No statistically significant differences were found for genotype or allelic distributions between genders. In the whole sample population, adiponectin levels were influenced by ADIPOQ rs17300539 (c.-1138G>A; lower in subjects with GG genotype). When only males were considered, IL-1β, IL-6, and TNF-α levels were associated with ADIPOQ rs1501299 (c.214 + 62G>T; higher in GG subjects). TNF-α concentrations were modulated by TNF-α rs1800629 (c.-488G>A; lower in GG males), RETN rs1862513 (c.-216C>G; higher in CC subjects), and RETN rs3219177 (c.118 + 39C>T; higher in CC subjects). Leptin levels were influenced by IL-1β rs1143627 (c.-118C>T) presenting TT individuals' lower levels. CONCLUSIONS Our data demonstrate that in pediatric obese patients, some adipokine gene SNPs have an association with circulating adipokine levels and lipid profile.
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Affiliation(s)
- Henrique Nascimento
- 1 IBMC-Instituto de Biologia Molecular e Celular (Institute for Molecular and Cell Biology), Universidade do Porto , Porto, Portugal .,2 Instituto de Investigação e Inovação em Saúde (Institute for Research and Innovation in Health), Universidade do Porto , Porto, Portugal .,3 UCIBIO\REQUIMTE, Department of Biological Sciences, Laboratory of Biochemistry, Faculty of Pharmacy, University of Porto , Porto, Portugal
| | - Emília Vieira
- 4 Molecular Genetics Unit, Medical Genetics Center Dr. Jacinto de Magalhães , Porto Hospital Centre, Porto, Portugal
| | - Susana Coimbra
- 3 UCIBIO\REQUIMTE, Department of Biological Sciences, Laboratory of Biochemistry, Faculty of Pharmacy, University of Porto , Porto, Portugal .,5 CESPU, Institute of Research and Advanced Training in Health Sciences and Technologies (IINFACTS) , Gandra-PRD, Portugal
| | - Cristina Catarino
- 1 IBMC-Instituto de Biologia Molecular e Celular (Institute for Molecular and Cell Biology), Universidade do Porto , Porto, Portugal .,2 Instituto de Investigação e Inovação em Saúde (Institute for Research and Innovation in Health), Universidade do Porto , Porto, Portugal .,3 UCIBIO\REQUIMTE, Department of Biological Sciences, Laboratory of Biochemistry, Faculty of Pharmacy, University of Porto , Porto, Portugal
| | - Elísio Costa
- 1 IBMC-Instituto de Biologia Molecular e Celular (Institute for Molecular and Cell Biology), Universidade do Porto , Porto, Portugal .,2 Instituto de Investigação e Inovação em Saúde (Institute for Research and Innovation in Health), Universidade do Porto , Porto, Portugal .,3 UCIBIO\REQUIMTE, Department of Biological Sciences, Laboratory of Biochemistry, Faculty of Pharmacy, University of Porto , Porto, Portugal
| | - Elsa Bronze-da-Rocha
- 1 IBMC-Instituto de Biologia Molecular e Celular (Institute for Molecular and Cell Biology), Universidade do Porto , Porto, Portugal .,2 Instituto de Investigação e Inovação em Saúde (Institute for Research and Innovation in Health), Universidade do Porto , Porto, Portugal .,3 UCIBIO\REQUIMTE, Department of Biological Sciences, Laboratory of Biochemistry, Faculty of Pharmacy, University of Porto , Porto, Portugal
| | | | - Márcia Carvalho
- 7 FP-ENAS, CEBIMED, Fundação Ensino e Cultura Fernando Pessoa , Porto, Portugal
| | - Helena Ferreira Mansilha
- 8 Childhood and Adolescence Department of CMIN (Centro Materno-Infantil do Norte), Porto Hospital Centre, ICBAS (Instituto de Ciências Biomédicas Abel Salazar), University of Porto , Porto, Portugal
| | - Carla Rêgo
- 9 Children and Adolescent Centre, CUF Hospital, Center for Health Technology and Services Research (CINTESIS), Faculty of Medicine, University of Porto , Porto, Portugal
| | - Rosário Dos Santos
- 4 Molecular Genetics Unit, Medical Genetics Center Dr. Jacinto de Magalhães , Porto Hospital Centre, Porto, Portugal
| | - Alice Santos-Silva
- 1 IBMC-Instituto de Biologia Molecular e Celular (Institute for Molecular and Cell Biology), Universidade do Porto , Porto, Portugal .,2 Instituto de Investigação e Inovação em Saúde (Institute for Research and Innovation in Health), Universidade do Porto , Porto, Portugal .,3 UCIBIO\REQUIMTE, Department of Biological Sciences, Laboratory of Biochemistry, Faculty of Pharmacy, University of Porto , Porto, Portugal
| | - Luís Belo
- 1 IBMC-Instituto de Biologia Molecular e Celular (Institute for Molecular and Cell Biology), Universidade do Porto , Porto, Portugal .,2 Instituto de Investigação e Inovação em Saúde (Institute for Research and Innovation in Health), Universidade do Porto , Porto, Portugal .,3 UCIBIO\REQUIMTE, Department of Biological Sciences, Laboratory of Biochemistry, Faculty of Pharmacy, University of Porto , Porto, Portugal
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Kasim NB, Huri HZ, Vethakkan SR, Ibrahim L, Abdullah BM. Genetic polymorphisms associated with overweight and obesity in uncontrolled Type 2 diabetes mellitus. Biomark Med 2016; 10:403-15. [DOI: 10.2217/bmm-2015-0037] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Generally, obese and overweight individuals display higher free fatty acid levels, which stimulate insulin resistance. The combination of overweight or obesity with insulin resistance can trigger Type 2 diabetes mellitus (T2DM) and are primary contributing factors to the development of uncontrolled T2DM. Genetic polymorphisms also play an important role as they can impact a population's susceptibility to becoming overweight or obese and developing related chronic complications, such as uncontrolled T2DM. This review specifically examines the genetic polymorphisms associated with overweight and obesity in patients with uncontrolled T2DM. Particularly, gene polymorphisms in ADIPOQ (rs1501299 and rs17300539), LepR (rs1137101 and rs1045895), IRS2 (rs1805092), GRB14 (rs10195252 and rs3923113) and PPARG (rs1801282) have been associated with overweight and obesity in uncontrolled T2DM.
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Affiliation(s)
- Nor Bahirah Kasim
- Department of Pharmacy, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Hasniza Zaman Huri
- Department of Pharmacy, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
- Clinical Investigation Centre, Faculty of Medicine, 13th Floor Main Tower, University Malaya Medical Centre, 59100 Lembah Pantai Kuala Lumpur, Malaysia
| | | | - Luqman Ibrahim
- Department of Medicine, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Bashar Mudhaffar Abdullah
- Clinical Investigation Centre, Faculty of Medicine, 13th Floor Main Tower, University Malaya Medical Centre, 59100 Lembah Pantai Kuala Lumpur, Malaysia
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Motawi T, Salman T, Shaker O, Abdelhamid A. Association of polymorphism in adiponectin (+45 T/G) and leptin (-2548 G/A) genes with type 2 diabetes mellitus in male Egyptians. Arch Med Sci 2015; 11:937-44. [PMID: 26528333 PMCID: PMC4624740 DOI: 10.5114/aoms.2015.54848] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 08/29/2013] [Accepted: 10/06/2013] [Indexed: 12/18/2022] Open
Abstract
INTRODUCTION Adiponectin is an adipose tissue-specific protein with insulin-sensitizing properties. Many investigators have explored the association between adiponectin single nucleotide polymorphisms (SNPs) and type 2 diabetes mellitus (T2DM) in different ethnic populations from different regions. Leptin is a protein hormone constituting an important signal in the regulation of adipose tissue mass and body weight. The aim of this study was to explore potential associations between SNP +45 T>G of the adiponectin gene and SNP 2548G/A of leptin with T2DM and the effect of SNPs on serum adiponectin and leptin levels. MATERIAL AND METHODS From the Egyptian population, we enrolled 110 T2DM patients and 90 non-diabetic controls. Serum lipid profile, blood glucose, serum adiponectin, and leptin were measured. Genotyping for two common SNPs of the adiponectin and leptin genes was performed by polymerase chain reaction-restriction fragment length polymorphism. RESULTS The G allele and TG/GG genotype of SNP 45 occurred more frequently than the T allele and TT genotype in T2DM patients compares to the controls. Subjects with the GG + TG genotype of SNP 45 were at increased risk for T2DM (OR = 6.476; 95% CI: 3.401-12.33) and associated with a low serum adiponectin level compared with the TT genotype. The serum leptin concentration of GA + AA genotype carriers was not significantly different from that of the GG genotype in the diabetic group. CONCLUSIONS The G allele carriers who have reduced plasma concentrations of adiponectin may have an association with T2DM, while leptin SNP 2548 G/A is not associated with the risk of development of T2DM in the Egyptian population.
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Affiliation(s)
- Tarek Motawi
- Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Tarek Salman
- Faculty of Pharmacy, Al Azhar University, Cairo, Egypt
| | - Olfat Shaker
- Faculty of Medicine, Cairo University, Cairo, Egypt
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Lu JF, Zhou Y, Huang GH, Jiang HX, Hu BL, Qin SY. Association of ADIPOQ polymorphisms with obesity risk: A meta-analysis. Hum Immunol 2014; 75:1062-8. [DOI: 10.1016/j.humimm.2014.09.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 09/02/2014] [Accepted: 09/02/2014] [Indexed: 02/03/2023]
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Association of adiponectin promoter variants with traits and clusters of metabolic syndrome in Arabs: family-based study. Gene 2013; 527:663-9. [PMID: 23845780 DOI: 10.1016/j.gene.2013.06.057] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Revised: 06/02/2013] [Accepted: 06/24/2013] [Indexed: 12/20/2022]
Abstract
Plasma levels of adiponectin are decreased in type 2 diabetes, obesity and hypertension. Our aim was to use a family-based analysis to identify the genetic variants of the adiponectin (ADIPOQ) gene that are associated with obesity, insulin resistance, dyslipidemia and hypertension, among Arabs. We screened 328 Arabs in one large extended family for single nucleotide polymorphisms (SNPs) in the promoter region of the ADIPOQ gene. Two common SNPs were detected: rs17300539 and rs266729. Evidences of association between traits related to the metabolic syndrome and the SNPs were studied by implementing quantitative genetic association analysis. Results showed that SNP rs266729 was significantly associated with body weight (p-value=0.001), waist circumference (p-value=0.037), BMI (p-value=0.015) and percentage of total body fat (p-value=0.003). Up to 4.1% of heritability of obesity traits was explained by the rs266729 locus. Further cross-sectional analysis showed that carriers of the G allele had significantly higher values of waist circumference, BMI and percentage of total body fat (p-values 0.014, 0.004 and 0.032, respectively). No association was detected between SNP rs266729 and other clusters of metabolic syndrome or their traits except for HOMA-IR and fasting plasma insulin levels, p-values 0.035 and 0.004, respectively. In contrast, both measured genotype and cross-sectional analysis failed to detect an association between the SNP rs17300539 with traits and clusters of metabolic syndrome. In conclusion, we showed family-based evidence of association of SNP rs266729 at ADIPOQ gene with traits defining obesity in Arab population. This is important for future prediction and prevention of obesity in population where obesity is in an increasing trend.
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An SS, Hanley AJG, Ziegler JT, Brown WM, Haffner SM, Norris JM, Rotter JI, Guo X, Chen YDI, Wagenknecht LE, Langefeld CD, Bowden DW, Palmer ND. Association between ADIPOQ SNPs with plasma adiponectin and glucose homeostasis and adiposity phenotypes in the IRAS Family Study. Mol Genet Metab 2012; 107:721-8. [PMID: 23102667 PMCID: PMC3504195 DOI: 10.1016/j.ymgme.2012.10.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Revised: 10/05/2012] [Accepted: 10/05/2012] [Indexed: 12/18/2022]
Abstract
CONTEXT Adiponectin is an adipocytokine associated with a variety of metabolic traits. These associations in human studies, in conjunction with functional studies in model systems, have implicated adiponectin in multiple metabolic processes. OBJECTIVE We hypothesize that genetic variants associated with plasma adiponectin would also be associated with glucose homeostasis and adiposity phenotypes. DESIGN AND SETTING The Insulin Resistance Atherosclerosis Family Study was designed to identify the genetic and environmental basis of insulin resistance and adiposity in the Hispanic- (n=1,424) and African-American (n=604) population. MAIN OUTCOME MEASURES High quality metabolic phenotypes, e.g. insulin sensitivity (S(I)), acute insulin response (AIR), disposition index (DI), fasting glucose, body mass index (BMI), visceral adipose tissue (VAT), subcutaneous adipose tissue (SAT), and waist circumference, were explored. RESULTS Based on association analysis of more than 40 genetic polymorphisms in the adiponectin gene (ADIPOQ), we found no consistent association of ADIPOQ variants with plasma adiponectin levels and adiposity phenotypes. However, there were two promoter variants, rs17300539 and rs822387, associated with plasma adiponectin levels (P=0.0079 and 0.021, respectively) in the Hispanic-American cohort that were also associated with S(I) (P=0.0067 and 0.013, respectively). In contrast, there was only a single promoter SNP, rs17300539, associated with plasma adiponectin levels (P=0.0018) and fasting glucose (P=0.042) in the African-American cohort. Strikingly, high impact coding variants did not show evidence of association. CONCLUSIONS The lack of consistent patterns of association between variants, adiponectin levels, glucose homeostasis, and adiposity phenotypes suggests a reassessment of the influence of adiponectin in these pathways.
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Affiliation(s)
- S. Sandy An
- Wake Forest School of Medicine, Winston-Salem, NC, Department of Biochemistry
- Wake Forest School of Medicine, Winston-Salem, NC, Center for Genomics and Personalized Medicine Research
- Wake Forest School of Medicine, Winston-Salem, NC, Center for Diabetes Research
| | - Anthony J. G. Hanley
- University of Toronto, Nutritional Sciences, Medicine and Dalla Lana School of Public Health
| | - Julie T. Ziegler
- Wake Forest School of Medicine, Winston-Salem, NC, Department of Biostatistical Sciences
| | - W. Mark Brown
- Wake Forest School of Medicine, Winston-Salem, NC, Department of Biostatistical Sciences
| | | | - Jill M. Norris
- Colorado School of Public Health, University of Colorado, Aurora, CO, Department of Epidemiology
| | | | - Xiuqing Guo
- Cedars-Sinai Medical Center, Los Angeles, CA
| | | | - Lynne E. Wagenknecht
- Wake Forest School of Medicine, Winston-Salem, NC, Division of Public Health Sciences
| | - Carl D. Langefeld
- Wake Forest School of Medicine, Winston-Salem, NC, Department of Biostatistical Sciences
| | - Donald W. Bowden
- Wake Forest School of Medicine, Winston-Salem, NC, Department of Biochemistry
- Wake Forest School of Medicine, Winston-Salem, NC, Center for Genomics and Personalized Medicine Research
- Wake Forest School of Medicine, Winston-Salem, NC, Center for Diabetes Research
- Wake Forest School of Medicine, Winston-Salem, NC, Department of Internal Medicine
| | - Nicholette D. Palmer
- Wake Forest School of Medicine, Winston-Salem, NC, Department of Biochemistry
- Wake Forest School of Medicine, Winston-Salem, NC, Center for Genomics and Personalized Medicine Research
- Wake Forest School of Medicine, Winston-Salem, NC, Center for Diabetes Research
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An SS, Palmer ND, Hanley AJG, Ziegler JT, Brown WM, Haffner SM, Norris JM, Rotter JI, Guo X, Chen YDI, Wagenknecht LE, Langefeld CD, Bowden DW. Estimating the contributions of rare and common genetic variations and clinical measures to a model trait: adiponectin. Genet Epidemiol 2012; 37:13-24. [PMID: 23032297 DOI: 10.1002/gepi.21685] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2012] [Revised: 08/03/2012] [Accepted: 08/23/2012] [Indexed: 01/20/2023]
Abstract
Common genetic variation frequently accounts for only a modest amount of interindividual variation in quantitative traits and complex disease susceptibility. Circulating adiponectin, an adipocytokine implicated in metabolic disease, is a model for assessing the contribution of genetic and clinical factors to quantitative trait variation. The adiponectin locus, ADIPOQ, is the primary source of genetically mediated variation in plasma adiponectin levels. This study sought to define the genetic architecture of ADIPOQ in the comprehensively phenotyped Hispanic (n = 1,151) and African American (n = 574) participants from the Insulin Resistance Atherosclerosis Family Study (IRASFS). Through resequencing and bioinformatic analysis, rare/low frequency (<5% MAF) and common variants (>5% MAF) in ADIPOQ were identified. Genetic variants and clinical variables were assessed for association with adiponectin levels and contribution to adiponectin variance in the Hispanic and African American cohorts. Clinical traits accounted for the greatest proportion of variance (POV) at 31% (P = 1.16 × 10-(47)) and 47% (P = 5.82 × 10-(20)), respectively. Rare/low frequency variants contributed more than common variants to variance in Hispanics: POV = 18% (P = 6.40 × 10-(15)) and POV = 5% (P = 0.19), respectively. In African Americans, rare/low frequency and common variants both contributed approximately equally to variance: POV = 6% (P = 5.44 × 10-(12)) and POV = 9% (P = 1.44 × 10-(10)), respectively. Importantly, single low frequency alleles in each ethnic group were as important as, or more important than, common variants in explaining variation in adiponectin. Cumulatively, these clinical and ethnicity-specific genetic contributors explained half or more of the variance in Hispanic and African Americans and provide new insight into the sources of variation for this important adipocytokine.
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Affiliation(s)
- S Sandy An
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, North Carolina 27157, USA
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Yu Z, Han S, Cao X, Zhu C, Wang X, Guo X. Genetic polymorphisms in adipokine genes and the risk of obesity: a systematic review and meta-analysis. Obesity (Silver Spring) 2012; 20:396-406. [PMID: 21660081 DOI: 10.1038/oby.2011.148] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Polymorphisms in adipokine genes, such as leptin (LEP), leptin receptor (LEPR), resistin (RETN), adiponectin (ADIPOQ), interleukin-1β (IL-1β), IL-6 (IL-6), and tumor necrosis factor-α (TNF-α) may be involved in the development of obesity. We conducted a systematic review of published evidence on the association between different adipokine genes and the risk of obesity. Librarian-designed searches of PubMed and HuGeNet, review of reference lists from published reviews and content expert advice identified potentially eligible studies. The genotyping information and polymorphisms of different adipokine genes, numbers of genotyped cases and controls and frequencies of genotypes were extracted from 48 eligible studies included in this review. Twenty-one polymorphisms each associated with obesity in at least one study were identified. Polymorphisms in the adipokine genes, LEP, LEPR, and RETN were not associated with obesity susceptibility, whereas ADIPOQ G276T (T vs. G: odds ratio (OR), 1.59; 95% confidence interval (CI), 1.39-1.81), IL-1β C3953T (CC vs. CT+TT: OR, 1.61; 95% CI, 1.18-2.20), and TNF-α G308A (GG vs. GA+AA: OR, 1.19; 95% CI, 1.02-1.39) polymorphisms were associated with an increased risk of obesity. The IL-6 G174C polymorphism was also associated obesity when using allelic comparisons, the recessive genetic model and the dominant genetic model with OR (95% CI) of 1.95 (1.37-2.77), 1.44 (1.15-1.80), and 1.36 (1.16-1.59), respectively. No significant evidence of publication bias was present. However, these "null" results were underpowered due to a small pooled sample size, and analysis of additional case-control studies with larger sample sizes should provide further clarifications.
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Affiliation(s)
- Zhangbin Yu
- Department of Pediatrics, Nanjing Maternal and Child Health Hospital, Nanjing Medical University, Nanjing, PR China
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Enns JE, Taylor CG, Zahradka P. Variations in Adipokine Genes AdipoQ, Lep, and LepR are Associated with Risk for Obesity-Related Metabolic Disease: The Modulatory Role of Gene-Nutrient Interactions. J Obes 2011; 2011:168659. [PMID: 21773001 PMCID: PMC3136149 DOI: 10.1155/2011/168659] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2011] [Accepted: 03/10/2011] [Indexed: 02/08/2023] Open
Abstract
Obesity rates are rapidly increasing worldwide and facilitate the development of many related disease states, such as cardiovascular disease, the metabolic syndrome, type 2 diabetes mellitus, and various types of cancer. Variation in metabolically important genes can have a great impact on a population's susceptibility to becoming obese and/or developing related complications. The adipokines adiponectin and leptin, as well as the leptin receptor, are major players in the regulation of body energy homeostasis and fat storage. This paper summarizes the findings of single nucleotide polymorphisms in these three genes and their effect on obesity and metabolic disease risk. Additionally, studies of gene-nutrient interactions involving adiponectin, leptin, and the leptin receptor are highlighted to emphasize the critical role of diet in susceptible populations.
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Affiliation(s)
- Jennifer Emily Enns
- Department of Physiology, University of Manitoba and Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Research Centre, 351 Tache Ave, Winnipeg, Manitoba, Canada R2H 2A6
| | - Carla G. Taylor
- Departments of Human Nutritional Sciences and Physiology, University of Manitoba, 351 Tache Ave, Winnipeg, Manitoba, Canada R2H 2A6
| | - Peter Zahradka
- Departments of Physiology and Human Nutritional Sciences, University of Manitoba and Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Research Centre, 351 Tache Ave, Winnipeg, Manitoba, Canada R2H 2A6
- *Peter Zahradka:
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Wu Y, Li Y, Lange EM, Croteau-Chonka DC, Kuzawa CW, McDade TW, Qin L, Curocichin G, Borja JB, Lange LA, Adair LS, Mohlke KL. Genome-wide association study for adiponectin levels in Filipino women identifies CDH13 and a novel uncommon haplotype at KNG1-ADIPOQ. Hum Mol Genet 2010; 19:4955-64. [PMID: 20876611 DOI: 10.1093/hmg/ddq423] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Adiponectin is an adipocyte-secreted protein involved in a variety of metabolic processes, including glucose regulation and fatty acid catabolism. We conducted a genome-wide association study to investigate the genetic loci associated with plasma adiponectin in 1776 unrelated Filipino women from the Cebu Longitudinal Health and Nutrition Survey (CLHNS). Our strongest signal for adiponectin mapped to the gene CDH13 (rs3865188, P ≤ 7.2 × 10(-16)), which encodes a receptor for high-molecular-weight forms of adiponectin. Strong association was also detected near the ADIPOQ gene (rs864265, P = 3.8 × 10(-9)) and at a novel signal 100 kb upstream near KNG1 (rs11924390, P = 7.6 × 10(-7)). All three signals were also observed in 1774 young adult CLHNS offspring and in combined analysis including all 3550 mothers and offspring samples (all P ≤ 1.6 × 10(-9)). An uncommon haplotype of rs11924390 and rs864265 (haplotype frequency = 0.050) was strongly associated with lower adiponectin compared with the most common C-G haplotype in both CLHNS mothers (P = 1.8 × 10(-25)) and offspring (P = 8.7 × 10(-32)). Comprehensive imputation of 2653 SNPs in a 2 Mb region using as reference combined CHB, JPT and CEU haplotypes from the 1000 Genomes Project revealed no variants that perfectly tagged this haplotype. Our findings provide the first genome-wide significant evidence of association with plasma adiponectin at the CDH13 locus and identify a novel uncommon KNG1-ADIPOQ haplotype strongly associated with adiponectin levels in Filipinos.
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Affiliation(s)
- Ying Wu
- Department of Genetics, University of North Carolina, Chapel Hill, NC 27599-7264, USA
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