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Su S, Zhang C, Zhang F, Li H, Yang X, Tang X. The association between leptin receptor gene polymorphisms and type 2 diabetes mellitus: A systematic review and meta-analysis. Diabetes Res Clin Pract 2016; 121:49-58. [PMID: 27657457 DOI: 10.1016/j.diabres.2016.08.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 07/30/2016] [Accepted: 08/19/2016] [Indexed: 01/23/2023]
Abstract
BACKGROUND Several case-control studies have demonstrated a relationship between leptin receptor (LEPR) gene polymorphism and type 2 diabetes mellitus (T2DM) risk, though the results have not always been consistent among diverse populations. This meta-analysis was designed to assess a more accurate association between LEPR polymorphism and T2DM. METHODS Eight electronic databases were consulted and researchers searched for Chinese and English peer-reviewed articles, published between 2000 and 2015, that referred to the association between LEPR polymorphism and T2DM. Pooled odds ratios (OR) with a 95% confidence interval (CI) were calculated in allele contrast, recessive, dominant and additive genetic models to assess this association. RESULTS Four repeatedly reviewed polymorphisms, taken from 22 studies on Arg109Lys, Asn656Lys, Gln223Arg and Pro1019Pro with 31,260 controls and 25,560 cases, were included in the meta-analysis model. The meta-result demonstrated that only the Pro1019Pro polymorphism was substantially associated with T2DM risk-G vs. A: OR with 95% CI 0.58 (0.43-0.79), Z=3.51, p=0.0005; GG vs. AG+AA: 0.57 (0.42-0.77), Z=3.66, p=0.0002; GG+AG vs. AA: 0.55 (0.37-0.81), Z=3.01, p=0.003; GG vs. AA: 0.51 (0.37-0.69), Z=4.24, p<0.001. CONCLUSIONS Our meta-analysis suggested a significant association between the LEPR Pro1019Pro polymorphism and T2DM risk. Thus, targeted healthcare should be strengthened with regard to this gene carrier in order to prevent T2DM.
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Affiliation(s)
- Shu Su
- Department of Epidemiology, School of Public Health and Management, Collaborative Innovation Center of Social Risks Governance in Health, Chongqing Medical University, Chongqing, China; School of Public Health and Preventive Medicine, Alfred Center, Monash University, Melbourne, Australia
| | - Chunhua Zhang
- Department of Epidemiology, School of Public Health and Management, Collaborative Innovation Center of Social Risks Governance in Health, Chongqing Medical University, Chongqing, China
| | - Fan Zhang
- Department of Epidemiology, School of Public Health and Management, Collaborative Innovation Center of Social Risks Governance in Health, Chongqing Medical University, Chongqing, China
| | - Hui Li
- Department of Epidemiology, School of Public Health and Management, Collaborative Innovation Center of Social Risks Governance in Health, Chongqing Medical University, Chongqing, China
| | - Xuewei Yang
- Department of Epidemiology, School of Public Health and Management, Collaborative Innovation Center of Social Risks Governance in Health, Chongqing Medical University, Chongqing, China
| | - Xiaojun Tang
- Department of Epidemiology, School of Public Health and Management, Collaborative Innovation Center of Social Risks Governance in Health, Chongqing Medical University, Chongqing, China.
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Yang MM, Wang J, Fan JJ, Ng TK, Sun DJ, Guo X, Teng Y, Li YB. Variations in the Obesity Gene "LEPR" Contribute to Risk of Type 2 Diabetes Mellitus: Evidence from a Meta-Analysis. J Diabetes Res 2016; 2016:5412084. [PMID: 27195302 PMCID: PMC4852360 DOI: 10.1155/2016/5412084] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Revised: 03/21/2016] [Accepted: 03/24/2016] [Indexed: 12/23/2022] Open
Abstract
Leptin is a hormone protein regulating food intake and energy expenditure. A number of studies have evaluated the genetic effect of leptin (LEP) and leptin receptor (LEPR) genes on T2DM. This study aimed to investigate the association between these gene polymorphisms and T2DM by a systematic review and meta-analysis. Published studies were identified through extensive search in PubMed and EMBASE. A total of 5143 T2DM cases and 5021 controls from 14 articles were included in this study. Five functional variants in LEPR were well evaluated. Meta-analysis showed that rs1137101 (p.R223Q) was significantly associated with T2DM in all genetic models: allele model (OR = 1.27, 95% confidence interval (CI) = 1.13-1.42), dominant model (OR = 1.19, 95% CI = 1.05-1.35), homozygote model (OR = 1.82, 95% CI = 1.38-2.39), and recessive model (OR = 1.75, 95% CI = 1.35-2.28), with minimal heterogeneity and no indication of publication bias. Similar associations with T2DM were also found for rs62589000 (p.P1019P) and 3'UTR ins/del, although the data was obtained from a small number of studies. For the other two polymorphisms rs1137100 (p.R109K) and rs8179183 (p.K656N), they were not significantly associated with T2DM. Our results provide robust evidences for the genetic association of rs1137101 (p.R223Q) in LEPR with T2DM susceptibility.
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Affiliation(s)
- Ming Ming Yang
- Eye Hospital, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
- The Centre for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150001, China
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Sha Tin 999077, Hong Kong
| | - Jun Wang
- Department of Endocrinology, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Jiao Jie Fan
- Eye Hospital, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Tsz Kin Ng
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Sha Tin 999077, Hong Kong
| | - Dian Jun Sun
- The Centre for Endemic Disease Control, Chinese Center for Disease Control and Prevention, Harbin Medical University, Harbin 150001, China
| | - Xin Guo
- Eye Hospital, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Yan Teng
- Eye Hospital, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Yan-Bo Li
- Department of Endocrinology, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
- *Yan-Bo Li:
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Liu Y, Lou YQ, Liu K, Liu JL, Wang ZG, Wen J, Zhao Q, Wen SJ, Xiao L. Role of leptin receptor gene polymorphisms in susceptibility to the development of essential hypertension: a case-control association study in a Northern Han Chinese population. J Hum Hypertens 2014; 28:551-6. [PMID: 24522342 PMCID: PMC4133281 DOI: 10.1038/jhh.2013.149] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Revised: 12/04/2013] [Accepted: 12/15/2013] [Indexed: 11/29/2022]
Abstract
In order to explore the potential association between the leptin receptor (LEPR) gene polymorphisms and essential hypertension (EH) risk in the Northern Han Chinese population, we recruited 823 hypertensive subjects and 491 healthy control subjects from the Northern Han Chinese. Genotyping was performed to identify the Lys109Arg, Gln223Arg and Lys656Asn polymorphisms of the LEPR gene. Significant associations were found in a dominant genetic model ([GG+AG] vs AA), P=0.007, odds ratio (OR)=3.697, 95% confidence interval (CI) 1.442–9.482), and in homozygote comparison (GG vs AA, P=0.005, OR=3.890, 95% CI 1.501–10.077) for the Gln223Arg polymorphism. No significant association could be found between Lys109Arg or Lys656Asn polymorphism and EH risk. Linkage disequilibrium was detected between the Lys109Arg and Gln223Arg polymorphisms, and haplotype analyses identified that the G-A haplotype was a protective haplotype for EH. Our studies demonstrated that the LEPR Gln223Arg polymorphism had an important role in a patient's susceptibility to EH in the Northern Han Chinese population.
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Affiliation(s)
- Y Liu
- Department of Hypertension Research, Beijing Anzhen Hospital, Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, PR China
| | - Y Q Lou
- 1] Department of Hypertension Research, Beijing Anzhen Hospital, Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, PR China [2] Department of Pulmonary Disease, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai, PR China
| | - K Liu
- Emergency Department, China MeiTan General Hospital, National Mining Medical Center, Beijing, PR China
| | - J L Liu
- Department of Hypertension Research, Beijing Anzhen Hospital, Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, PR China
| | - Z G Wang
- Department of Hypertension Research, Beijing Anzhen Hospital, Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, PR China
| | - J Wen
- Department of Hypertension Research, Beijing Anzhen Hospital, Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, PR China
| | - Q Zhao
- 1] Department of Medicine, Division of Cardiology, Northwestern University, Chicago, IL, USA [2] Department of Medicine & Center for Cardiovascular Research, University of Illinois at Chicago, Chicago, IL, USA
| | - S J Wen
- Department of Hypertension Research, Beijing Anzhen Hospital, Capital Medical University and Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, PR China
| | - L Xiao
- Department of Medicine & Center for Cardiovascular Research, University of Illinois at Chicago, Chicago, IL, USA
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Li Z, Yuan W, Ning S, Li J, Zhai W, Zhang S. Role of leptin receptor (LEPR) gene polymorphisms and haplotypes in susceptibility to hepatocellular carcinoma in subjects with chronic hepatitis B virus infection. Mol Diagn Ther 2013; 16:383-8. [PMID: 23090836 DOI: 10.1007/s40291-012-0008-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
AIM The reported association of the leptin receptor (LEPR) protein with hepatocellular carcinoma (HCC) carcinogenesis prompted us to evaluate whether genetic polymorphisms of the LEPR gene affect susceptibility to HCC and its clinicopathologic characteristics. METHODS A total of 417 subjects who were diagnosed with HCC and 551 age- and sex-matched subjects without HCC were enrolled in this study. All subjects had chronic hepatitis B virus (HBV) infection. Three single nucleotide polymorphisms (SNPs) of the LEPR gene were determined. RESULTS The genotype frequencies of Lys109Arg and Gln223Arg differed significantly between HCC and non-HCC subjects (both p < 0.001). For the Lys109Arg polymorphism, HCC subjects had a higher prevalence of 109Arg/Arg than non-HCC subjects. The 109Arg/Arg carriers had a significantly higher adjusted risk of HCC than the 109Lys/Lys carriers. For the Gln223Arg polymorphism, subjects with the 223Arg/Arg genotype had a significantly higher risk of HCC than those with the 223Gln/Gln genotype. The Lys656Asn SNP did not affect the HCC risk. Haplotype analyses showed that subjects with 109Lys-656Lys-223Arg and 109Arg-656Asn-223Arg haplotypes had an increased HCC risk, while the 109Lys-656Lys-223Gln and 109Lys-656Asn-223Gln haplotypes had protective effects against HCC development. None of these polymorphisms were related to the clinicopathologic features of HCC. CONCLUSION The Lys109Arg and Gln223Arg polymorphisms of the LEPR gene are associated with susceptibility to HCC but not with its clinicopathologic features. These polymorphisms may represent genetic markers for the risk of HCC in the context of chronic HBV infection.
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Affiliation(s)
- Zhen Li
- Department of General Surgery, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
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Cruz M, Valladares-Salgado A, Garcia-Mena J, Ross K, Edwards M, Angeles-Martinez J, Ortega-Camarillo C, de la Peña JE, Burguete-Garcia AI, Wacher-Rodarte N, Ambriz R, Rivera R, D'artote AL, Peralta J, Parra EJ, Kumate J. Candidate gene association study conditioning on individual ancestry in patients with type 2 diabetes and metabolic syndrome from Mexico City. Diabetes Metab Res Rev 2010; 26:261-70. [PMID: 20503258 DOI: 10.1002/dmrr.1082] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND Type 2 diabetes (T2D) is influenced by diverse environmental and genetic risk factors. Metabolic syndrome (MS) increases the risk of cardiovascular disease and diabetes. We analysed 14 cases of polymorphisms located in 10 candidate loci, in a sample of patients with T2D and controls from Mexico City. METHODS We analysed the association of 14 polymorphisms located within 10 genes (TCF7L2, ENPP1, ADRB3, KCNJ11, LEPR, PPARgamma, FTO, CDKAL1, SIRT1 and HHEX) with T2D and MS. The analysis included 519 subjects with T2D defined according to the ADA criteria, 389 with MS defined according to the AHA/NHLBI criteria and 547 controls. Association was tested with the program ADMIXMAP including individual ancestry, age, sex, education and in some cases body mass index (BMI), in a logistic regression model. RESULTS The two markers located within the TCF7L2 gene showed strong associations with T2D (rs7903146, T allele, odd ratio (OR) = 1.76, p = 0.001 and rs12255372, T allele, OR = 1.78, p = 0.002), but did not show significant association with MS. The non-synonymous rs4994 polymorphism of the ADRB3 gene was associated with T2D (Trp allele, OR = 0.62, p = 0.001) and MS (Trp allele, OR = 0.74, p = 0.018). Nominally significant associations were also observed between T2D and the SIRT1 rs3758391 SNP and MS and the HHEX rs5015480 polymorphism. CONCLUSIONS Variants located within the gene TCF7L2 are strongly associated with T2D but not with MS, providing support to previous evidence indicating that polymorphisms at the TCF7L2 gene increase T2D risk. In contrast, the non-synonymous ADRB3 rs4994 polymorphism is associated with T2D and MS.
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Affiliation(s)
- M Cruz
- Unidad de Investigacion Medica en Bioquimica, Hospital de Especialidades, Instituto Mexicano del Seguro Social, CMN Siglo XXI, Mexico, DF, Mexico.
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Phillips CM, Goumidi L, Bertrais S, Field MR, Ordovas JM, Cupples LA, Defoort C, Lovegrove JA, Drevon CA, Blaak EE, Gibney MJ, Kiec-Wilk B, Karlstrom B, Lopez-Miranda J, McManus R, Hercberg S, Lairon D, Planells R, Roche HM. Leptin receptor polymorphisms interact with polyunsaturated fatty acids to augment risk of insulin resistance and metabolic syndrome in adults. J Nutr 2010; 140:238-44. [PMID: 20032477 DOI: 10.3945/jn.109.115329] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The leptin receptor (LEPR) is associated with insulin resistance, a key feature of metabolic syndrome (MetS). Gene-fatty acid interactions may affect MetS risk. The objective was to investigate the relationship among LEPR polymorphisms, insulin resistance, and MetS risk and whether plasma fatty acids, a biomarker of dietary fatty acids, modulate this. LEPR polymorphisms (rs10493380, rs1137100, rs1137101, rs12067936, rs1805096, rs2025805, rs3790419, rs3790433, rs6673324, and rs8179183), biochemical measurements, and plasma fatty acid profiles were determined in the LIPGENE-SU.VI.MAX study of MetS cases and matched controls (n = 1754). LEPR rs3790433 GG homozygotes had increased MetS risk compared with the minor A allele carriers [odds ratio (OR) = 1.65; 95% CI: 1.05-2.57; P = 0.028], which may be accounted for by their increased risk of elevated insulin concentrations (OR 2.40; 95% CI: 1.28-4.50; P = 0.006) and insulin resistance (OR = 2.15; 95% CI: 1.18-3.90; P = 0.012). Low (less than median) plasma (n-3) and high (n-6) PUFA status exacerbated the genetic risk conferred by GG homozygosity to hyperinsulinemia (OR 2.92-2.94) and insulin resistance (OR 3.40-3.47). Interestingly, these associations were abolished against a high (n-3) or low (n-6) PUFA background. Importantly, we replicated some of these findings in an independent cohort. Homozygosity for the LEPR rs3790433 G allele was associated with insulin resistance, which may predispose to increased MetS risk. Novel gene-nutrient interactions between LEPR rs3790433 and PUFA suggest that these genetic influences were more evident in individuals with low plasma (n-3) or high plasma (n-6) PUFA.
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Affiliation(s)
- Catherine M Phillips
- Nutrigenomics Research Group, School of Public Health and Population Science, University College Dublin Conway Institute, University College, Dublin 4, Ireland
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