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Cirelli T, Nicchio IG, Bussaneli DG, Silva BR, Nepomuceno R, Orrico SRP, Cirelli JA, Theodoro LH, Barros SP, Scarel-Caminaga RM. Evidence Linking PPARG Genetic Variants with Periodontitis and Type 2 Diabetes Mellitus in a Brazilian Population. Int J Mol Sci 2023; 24:ijms24076760. [PMID: 37047733 PMCID: PMC10095581 DOI: 10.3390/ijms24076760] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/03/2023] [Accepted: 03/05/2023] [Indexed: 04/14/2023] Open
Abstract
The peroxisome proliferator-activated receptor gamma (PPARG) gene encodes a transcription factor involved in the regulation of complex metabolic and inflammatory diseases. We investigated whether single nucleotide polymorphisms (SNPs) and haplotypes of the PPARG gene could contribute with susceptibility to develop periodontitis alone or together with type 2 diabetes mellitus (T2DM). Moreover, we evaluated the gene-phenotype association by assessing the subjects' biochemical and periodontal parameters, and the expression of PPARG and other immune response-related genes. We examined 345 subjects with a healthy periodontium and without T2DM, 349 subjects with moderate or severe periodontitis but without T2DM, and 202 subjects with moderate or severe periodontitis and T2DM. PPARG SNPs rs12495364, rs1801282, rs1373640, and rs1151999 were investigated. Multiple logistic regressions adjusted for age, sex, and smoking status showed that individuals carrying rs1151999-GG had a 64% lower chance of developing periodontitis together with T2DM. The CCGT haplotype increased the risk of developing periodontitis together with T2DM. The rs1151999-GG and rs12495364-TC were associated with reduced risk of obesity, periodontitis, elevated triglycerides, and elevated glycated hemoglobin, but there was no association with gene expression. Polymorphisms of the PPARG gene were associated with developing periodontitis together with T2DM, and with obesity, lipid, glycemic, and periodontal characteristics.
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Affiliation(s)
- Thamiris Cirelli
- Department of Dentistry, School of Dentistry, University Center-UNIFAE, São João da Boa Vista 13870-377, SP, Brazil
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University-UNESP, Araraquara 14801-903, SP, Brazil
| | - Ingra G Nicchio
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University-UNESP, Araraquara 14801-903, SP, Brazil
- Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, School of Dentistry at Araraquara, São Paulo State University-UNESP, Araraquara 14801-903, SP, Brazil
| | - Diego G Bussaneli
- Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, School of Dentistry at Araraquara, São Paulo State University-UNESP, Araraquara 14801-903, SP, Brazil
| | - Bárbara R Silva
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University-UNESP, Araraquara 14801-903, SP, Brazil
- Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, School of Dentistry at Araraquara, São Paulo State University-UNESP, Araraquara 14801-903, SP, Brazil
| | - Rafael Nepomuceno
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University-UNESP, Araraquara 14801-903, SP, Brazil
| | - Silvana R P Orrico
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University-UNESP, Araraquara 14801-903, SP, Brazil
- Advanced Research Center in Medicine, Union of the Colleges of the Great Lakes-UNILAGO, São José do Rio Preto 15030-070, SP, Brazil
| | - Joni A Cirelli
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University-UNESP, Araraquara 14801-903, SP, Brazil
| | - Letícia H Theodoro
- Department of Diagnosis and Surgery, School of Dentistry at Araçatuba, São Paulo State University-UNESP, Araçatuba 16015-050, SP, Brazil
| | - Silvana P Barros
- Department of Periodontology, School of Dentistry, University of North Carolina at Chapel Hill-UNC, Chapel Hill, NC 27599, USA
| | - Raquel M Scarel-Caminaga
- Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, School of Dentistry at Araraquara, São Paulo State University-UNESP, Araraquara 14801-903, SP, Brazil
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Vasishta S, Ganesh K, Umakanth S, Joshi MB. Ethnic disparities attributed to the manifestation in and response to type 2 diabetes: insights from metabolomics. Metabolomics 2022; 18:45. [PMID: 35763080 PMCID: PMC9239976 DOI: 10.1007/s11306-022-01905-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 04/13/2022] [Indexed: 11/21/2022]
Abstract
Type 2 diabetes (T2D) associated health disparities among different ethnicities have long been known. Ethnic variations also exist in T2D related comorbidities including insulin resistance, vascular complications and drug response. Genetic heterogeneity, dietary patterns, nutrient metabolism and gut microbiome composition attribute to ethnic disparities in both manifestation and progression of T2D. These factors differentially regulate the rate of metabolism and metabolic health. Metabolomics studies have indicated significant differences in carbohydrate, lipid and amino acid metabolism among ethnicities. Interestingly, genetic variations regulating lipid and amino acid metabolism might also contribute to inter-ethnic differences in T2D. Comprehensive and comparative metabolomics analysis between ethnicities might help to design personalized dietary regimen and newer therapeutic strategies. In the present review, we explore population based metabolomics data to identify inter-ethnic differences in metabolites and discuss how (a) genetic variations, (b) dietary patterns and (c) microbiome composition may attribute for such differences in T2D.
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Affiliation(s)
- Sampara Vasishta
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, 576104, Manipal, India
| | - Kailash Ganesh
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, 576104, Manipal, India
| | | | - Manjunath B Joshi
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, 576104, Manipal, India.
- Manipal School of Life Sciences, Planetarium Complex Manipal Academy of Higher Education Manipal, 576104, Manipal, India.
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Vales-Villamarín C, de Dios O, Pérez-Nadador I, Gavela-Pérez T, Soriano-Guillén L, Garcés C. PPARγ2 Pro12Ala Polymorphism is Associated in Children With Traits Related to Susceptibility to Type 2 Diabetes. Front Pharmacol 2021; 12:763853. [PMID: 34887761 PMCID: PMC8650059 DOI: 10.3389/fphar.2021.763853] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 11/10/2021] [Indexed: 12/16/2022] Open
Abstract
Peroxisome proliferator-activated receptor gamma (PPARγ) is a ligand-activated nuclear receptor that regulates glucose and lipid metabolism. Pharmacological activators of PPARγ are being used as a treatment of obesity related disorders such as dyslipidaemia and type 2 diabetes, but questions remain open regarding the effects of PPARγ on traits related to the development of type 2 diabetes. In our study, we have analyzed the relationship of the common variant Pro12Ala in the human PPARγ2 gene with the presence of obesity and with insulin, HOMA and lipid profile in a representative sample of 6-to 8-year-old children free from the confounding factors associated with adults. We found that Ala12Ala genotype was significantly more frequent in females with obesity than in those without obesity, with Ala12Ala carriers having significantly higher weight and body mass index (BMI), however the association disappeared when adjusting by leptin concentrations. The Ala12Ala genotype was associated with significantly higher HDL-cholesterol and apoA-I levels in males but not in females, independently of BMI. In a recessive model, in females, leptin levels appeared higher in Ala12Ala carriers. Although no apparent differences were observed in any sex when analyzing insulin levels and HOMA among genotypes without adjusting, lower insulin levels and lower HOMA appeared associated with Ala12Ala carriers when adjusting for BMI and leptin levels. In summary, our data showed that leptin seems to be having an effect on the association between the PPARγ2 Pro12Ala and BMI. Besides, after controlling for BMI and leptin, a protective effect of the Ala12Ala variant of the PPARγ2 Pro12Ala polymorphism on insulin sensitivity is evident already in prepubertal children.
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Affiliation(s)
| | - Olaya de Dios
- Lipid Research Laboratory, IIS-Fundación Jiménez Díaz UAM, Madrid, Spain
| | - Iris Pérez-Nadador
- Lipid Research Laboratory, IIS-Fundación Jiménez Díaz UAM, Madrid, Spain
| | | | | | - Carmen Garcés
- Lipid Research Laboratory, IIS-Fundación Jiménez Díaz UAM, Madrid, Spain
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Sarhangi N, Sharifi F, Hashemian L, Hassani Doabsari M, Heshmatzad K, Rahbaran M, Jamaldini SH, Aghaei Meybodi HR, Hasanzad M. PPARG (Pro12Ala) genetic variant and risk of T2DM: a systematic review and meta-analysis. Sci Rep 2020; 10:12764. [PMID: 32728045 PMCID: PMC7391673 DOI: 10.1038/s41598-020-69363-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 07/06/2020] [Indexed: 12/11/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a complex disease caused by the interaction between genetic and environmental factors. A growing number of evidence suggests that the peroxisome proliferator-activated receptor gamma (PPARG) gene plays a major role in T2DM development. Meta-analysis of genetic association studies is an efficient tool to gain a better understanding of multifactorial diseases and potentially to provide valuable insights into gene-disease interactions. The present study was focused on assessing the association between Pro12Ala variation in the PPARG and T2DM risk through a comprehensive meta-analysis. We searched PubMed, WoS, Embase, Scopus and ProQuest from 1990 to 2017. The fixed-effect or random-effect model was used to evaluate the pooled odds ratios (ORs) and 95% confidence intervals (CIs) depending on the heterogeneity among studies. The sources of heterogeneity and publication bias among the included studies were assessed using I2 statistics and Egger's tests. A total of 73 studies, involving 62,250 cases and 69,613 controls were included. The results showed that the minor allele (G) of the rs1801282 variant was associated with the decreased risk of T2DM under different genetic models. Moreover, the protective effect of minor allele was detected to be significantly more in some ethnicities including the European (18%), East Asian (20%), and South East Asian (18%). And the reduction of T2DM risk in Ala12 carriers was stronger in individuals from North Europe rather than Central and South Europe. Our findings indicated that the rs1801282 variant may contribute to decrease of T2DM susceptibility in different ancestries.
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Affiliation(s)
- Negar Sarhangi
- Personalized Medicine Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, 1411413137, Tehran, Iran
| | - Farshad Sharifi
- Elderly Health Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, 1411413137, Tehran, Iran
| | - Leila Hashemian
- Medical Genomics Research Center, Tehran Medical Sciences, Islamic Azad University, 1916893813, Tehran, Iran
| | - Maryam Hassani Doabsari
- Medical Genomics Research Center, Tehran Medical Sciences, Islamic Azad University, 1916893813, Tehran, Iran
| | - Katayoun Heshmatzad
- Medical Genomics Research Center, Tehran Medical Sciences, Islamic Azad University, 1916893813, Tehran, Iran
| | - Marzieh Rahbaran
- Medical Genomics Research Center, Tehran Medical Sciences, Islamic Azad University, 1916893813, Tehran, Iran
| | - Seyed Hamid Jamaldini
- Medical Genomics Research Center, Tehran Medical Sciences, Islamic Azad University, 1916893813, Tehran, Iran
| | - Hamid Reza Aghaei Meybodi
- Personalized Medicine Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, 1411413137, Tehran, Iran.,Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, 1411413137, Tehran, Iran
| | - Mandana Hasanzad
- Personalized Medicine Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, 1411413137, Tehran, Iran. .,Medical Genomics Research Center, Tehran Medical Sciences, Islamic Azad University, 1916893813, Tehran, Iran.
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Carrillo-Venzor MA, Erives-Anchondo NR, Moreno-González JG, Moreno-Brito V, Licón-Trillo A, González-Rodríguez E, Hernández-Rodríguez PDC, Reza-López SA, Loera-Castañeda V, Leal-Berumen I. Pro12Ala PPAR-γ2 and +294T/C PPAR-δ Polymorphisms and Association with Metabolic Traits in Teenagers from Northern Mexico. Genes (Basel) 2020; 11:genes11070776. [PMID: 32664384 PMCID: PMC7397260 DOI: 10.3390/genes11070776] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/01/2020] [Accepted: 07/07/2020] [Indexed: 11/20/2022] Open
Abstract
Peroxisome proliferator-activated receptors (PPARs) play roles in glucose and lipid metabolism regulation. Pro12Ala PPAR-γ2 and +294T/C PPAR-δ have been associated with dyslipidemia, hyperglycemia and high body mass index (BMI). We compared metabolic traits and determined associations with Pro12Ala PPAR-γ2 or +294T/C PPAR-δ polymorphism among teenagers from different ethnicity. Four hundred and twelve samples with previous biochemical and biometric measurements were used. Genomic DNA from peripheral blood was extracted and analyzed by end-point PCR for Pro12Ala PPAR-γ2. The +294T/C PPAR-δ PCR product was also digested with Bsl I. Two genotype groups were formed: major allele homozygous and minor allele carriers. Pro12Ala PPAR-γ2 G minor allele frequencies were: 10% in Mestizo-1, 19% in Mestizo-2, 23% in Tarahumara, 12% in Mennonite, and 17% in the total studied population. The +294T/C PPAR-δ C minor allele frequencies were: 18% in Mestizo-1, 20% in Mestizo-2, 6% in Tarahumara, 13% in Mennonite, and 12% in the total studied population. Teenagers with PPAR-γ2 G allele showed a greater risk for either high waist/height ratio or low high-density lipoprotein; and, also had lower total cholesterol. Whereas, PPAR-γ2 G allele showed lower overweight/obesity phenotype (BMI Z-score) frequency, PPAR-δ C allele was a risk factor for it. Metabolic traits were associated with both PPAR polymorphisms.
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Affiliation(s)
- Martín A. Carrillo-Venzor
- Faculty of Medicine and Biomedical Sciences, Autonomous University of Chihuahua, Circuito Universitario, Campus II, Chihuahua 31109, Mexico; (M.A.C.-V.); (N.R.E.-A.); (J.G.M.-G.); (V.M.-B.); (A.L.T.); (E.G.-R.); (S.A.R.-L.)
| | - Nancy R. Erives-Anchondo
- Faculty of Medicine and Biomedical Sciences, Autonomous University of Chihuahua, Circuito Universitario, Campus II, Chihuahua 31109, Mexico; (M.A.C.-V.); (N.R.E.-A.); (J.G.M.-G.); (V.M.-B.); (A.L.T.); (E.G.-R.); (S.A.R.-L.)
| | - Janette G. Moreno-González
- Faculty of Medicine and Biomedical Sciences, Autonomous University of Chihuahua, Circuito Universitario, Campus II, Chihuahua 31109, Mexico; (M.A.C.-V.); (N.R.E.-A.); (J.G.M.-G.); (V.M.-B.); (A.L.T.); (E.G.-R.); (S.A.R.-L.)
| | - Verónica Moreno-Brito
- Faculty of Medicine and Biomedical Sciences, Autonomous University of Chihuahua, Circuito Universitario, Campus II, Chihuahua 31109, Mexico; (M.A.C.-V.); (N.R.E.-A.); (J.G.M.-G.); (V.M.-B.); (A.L.T.); (E.G.-R.); (S.A.R.-L.)
| | - Angel Licón-Trillo
- Faculty of Medicine and Biomedical Sciences, Autonomous University of Chihuahua, Circuito Universitario, Campus II, Chihuahua 31109, Mexico; (M.A.C.-V.); (N.R.E.-A.); (J.G.M.-G.); (V.M.-B.); (A.L.T.); (E.G.-R.); (S.A.R.-L.)
| | - Everardo González-Rodríguez
- Faculty of Medicine and Biomedical Sciences, Autonomous University of Chihuahua, Circuito Universitario, Campus II, Chihuahua 31109, Mexico; (M.A.C.-V.); (N.R.E.-A.); (J.G.M.-G.); (V.M.-B.); (A.L.T.); (E.G.-R.); (S.A.R.-L.)
| | | | - Sandra A. Reza-López
- Faculty of Medicine and Biomedical Sciences, Autonomous University of Chihuahua, Circuito Universitario, Campus II, Chihuahua 31109, Mexico; (M.A.C.-V.); (N.R.E.-A.); (J.G.M.-G.); (V.M.-B.); (A.L.T.); (E.G.-R.); (S.A.R.-L.)
| | | | - Irene Leal-Berumen
- Faculty of Medicine and Biomedical Sciences, Autonomous University of Chihuahua, Circuito Universitario, Campus II, Chihuahua 31109, Mexico; (M.A.C.-V.); (N.R.E.-A.); (J.G.M.-G.); (V.M.-B.); (A.L.T.); (E.G.-R.); (S.A.R.-L.)
- Correspondence:
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Grygiel-Górniak B, Ziółkowska-Suchanek I, Kaczmarek E, Puszczewicz M, Rozwadowska N. Genetic Background of Hypertension in Connective Tissue Diseases. J Immunol Res 2020; 2020:7509608. [PMID: 32090130 PMCID: PMC7023786 DOI: 10.1155/2020/7509608] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 01/16/2020] [Accepted: 01/25/2020] [Indexed: 02/07/2023] Open
Abstract
Peroxisome proliferator-activated receptors (PPAR gamma-2) and beta-3-adrenergic receptors (ADRB3) are involved in the risk of hypertension. But their exact role in blood pressure modulation in patients with connective tissue diseases (CTD) is still not well defined. In this study, 104 patients with CTD and 103 gender- and age-matched controls were genotyped for Pro12Ala and C1431T polymorphisms of the PPAR gamma-2 gene and Trp64Arg polymorphism of the ADRB gene. Anthropometric and biochemical measurements were evaluated, followed by genotyping using TaqMan® SNP genotyping assays and polymerase chain reaction-restriction fragment length polymorphism. The prevalence of analyzed genotypes and alleles was comparable between patients with CTD and the control group, as well as hypertensive and normotensive subjects. Patients with CTD have lower body fat and higher body water amount, serum glucose, and triglyceride (TG) levels. Hypertensive subjects are older and have higher body mass, BMI, waist circumference (WC), body water content, glucose, and TG concentration. The multivariate analysis revealed that hypertensive subjects with Ala12/X or Trp64Trp have higher body mass and WC when compared to normotensive subjects. Trp64Trp polymorphism was also characterized by a higher TG level, while T1431/X subjects had higher WC. The presence of CTD, visceral fat distribution, and increased age are the predictors of hypertension development. Hypertensive patients with CTD and Trp64Trp polymorphism have an increased risk of visceral obesity development and metabolic complications, which in turn affects the value of blood pressure. In addition, either Ala12/X or T1431/X predicts the visceral body fat distribution in hypertensive subjects.
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Affiliation(s)
- Bogna Grygiel-Górniak
- Department of Rheumatology and Internal Diseases, Poznan University of Medical Sciences, Poznan 61-545, Poland
| | | | - Elżbieta Kaczmarek
- Department of Bioinformatics and Computational Biology, Poznan University of Medical Sciences, Poznan 60-806, Poland
| | - Mariusz Puszczewicz
- Department of Rheumatology and Internal Diseases, Poznan University of Medical Sciences, Poznan 61-545, Poland
| | - Natalia Rozwadowska
- Institute of Human Genetics, Polish Academy of Sciences, Poznan 60-479, Poland
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Zhang S, Jiang J, Chen Z, Wang Y, Tang W, Chen Y, Liu L. Relationship of PPARG, PPARGC1A, and PPARGC1B polymorphisms with susceptibility to hepatocellular carcinoma in an eastern Chinese Han population. Onco Targets Ther 2018; 11:4651-4660. [PMID: 30122956 PMCID: PMC6087028 DOI: 10.2147/ott.s168274] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Background PPARG, PPARGC1A, and PPARGC1B polymorphisms may be implicated in the development of cancer. Participants and methods In this study, we selected PPARG rs1801282 C>G and rs3856806 C>T, PPARGC1A rs2970847 C>T, and PPARGC1B rs7732671 G>C and rs17572019 G>A single-nucleotide polymorphisms to explore the relationship between these polymorphisms and hepatocellular carcinoma (HCC) risk. A total of 584 HCC patients and 923 controls were enrolled. Results We found that PPARG rs1801282 C>G polymorphism was correlated with a decreased susceptibility of HCC (CG vs CC, adjusted OR 0.47, 95% CI 0.27-0.82, P=0.007; CG/GG vs CC, adjusted OR 0.52, 95% CI 0.31-0.88, P=0.015). However, PPARG rs3856806 C>T polymorphism was a risk factor for HCC (TT vs CC, adjusted OR 2.33, 95% CI 1.25-4.36, P=0.008; TT vs CT/CC, adjusted OR 2.26, 95% CI 1.22-4.17, P=0.010). In a subgroup analysis by chronic hepatitis B virus (HBV)-infection status, age, sex, alcohol use, and smoking status, a significant association between PPARG rs1801282 C>G polymorphism and a decreased risk of HCC in male, ≥53 years, never-smoking, never-drinking, and nonchronic HBV-infection-status subgroups was found. However, we found PPARG rs3856806 C>T polymorphism increased the risk of HCC in never-smoking, never-drinking, and nonchronic HBV-infection-status subgroups. Haplotype-comparison analysis indicated that Crs1801282Trs3856806Crs2970847Grs7732671Grs17572019, Crs1801282Trs3856806Trs2970847Grs7732671Grs17572019, and Crs1801282Crs3856806Crs2970847Crs7732671Ars17572019 haplotypes increased the risk of HCC. PPARG Crs1801282Trs3856806 and Grs1801282Crs3856806 haplotypes also influenced the risk of HCC. Conclusion In conclusion, our findings suggest PPARG polymorphisms may influence the susceptibility of HCC. The PPARG, PPARGC1A, and PPARGC1B haplotypes might be associated with HCC risk.
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Affiliation(s)
- Sheng Zhang
- Department of General Surgery, Changzhou Third People's Hospital, Changzhou, Jiangsu Province, China
| | - Jiakai Jiang
- Department of General Surgery, Changzhou Third People's Hospital, Changzhou, Jiangsu Province, China
| | - Zhan Chen
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian Province, China
| | - Yafeng Wang
- Department of Cardiology, People's Hospital of Xishuangbanna Dai Autonomous Prefecture, Jinghong, Yunnan Province, China
| | - Weifeng Tang
- Department of Cardiothoracic Surgery, Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Yu Chen
- Cancer Bio-immunotherapy Center, Fujian Cancer Hospital and Fujian Medical University Cancer Hospital, Fuzhou, Fujian Province, China, .,Department of Medical Oncology, Fujian Cancer Hospital and Fujian Medical University Cancer Hospital, Fuzhou, Fujian Province, China, .,Fujian Provincial Key Laboratory of Translational Cancer Medicine, Fuzhou, Fujian Province, China,
| | - Longgen Liu
- Department of Liver Disease, Changzhou Third People's Hospital, Changzhou, Jiangsu Province, China,
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Al-Naemi AH, Ahmad AJ. Is the rs1801282 (G/C) Polymorphism of PPAR - Gamma Gene Associated with T2DM in Iraqi People? Open Access Maced J Med Sci 2018; 6:447-455. [PMID: 29610599 PMCID: PMC5874364 DOI: 10.3889/oamjms.2018.156] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2014] [Revised: 05/12/2014] [Accepted: 05/14/2014] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND Pro12Ala (rs1801282) is a common polymorphism of the human PPAR-γ gene. Studies have demonstrated conflicting results about its association with T2DM worldwide. There are no reports about such possible association among Iraqi people. OBJECTIVES This study aims at finding out whether having the mutant allele (Ala12) might be associated with T2DM among Iraqi people. METHODS One hundred and ninety-two Arabic Iraqi adult subjects (97 with T2DM and 95 controls) were genotyped using PCR- RFLP. Clinical, anthropometrical and biochemical variables were compared regarding the Pro12Ala genotypes. RESULTS About 5.67% of people with diabetes were carriers of the (Ala12) allele versus 9.47% of controls. Allelic and genotypic frequencies were not statistically different among diabetics and controls [(χ2= 1.99, p= 0.16) and (χ2= 2.17, p= 0.14)]. Age, BMI and smoking- but not Pro12Ala - were independent risk factors for T2DM in our subjects. Pro12Ala was not associated with T2DM (Odd's ratio 0.55, 95% CI 0.23- 1.32, p= 0.14). CONCLUSIONS Our study revealed a relatively high frequency of the Ala12 allele among Arabic Iraqis. These frequencies did not significantly differ between diabetics and controls indicating the absence of association of Pro12Ala with T2DM among Iraqis.
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Affiliation(s)
- Amjad Hazim Al-Naemi
- Department of Biochemistry, Mosul Medical College, University of Mosul, Mosul, Iraq
| | - Akram Jarjees Ahmad
- Department of Biochemistry, Mosul Medical College, University of Mosul, Mosul, Iraq
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Gene-diet-related factors of hyperglycaemia in postmenopausal women. J Appl Genet 2018; 59:169-177. [PMID: 29464546 PMCID: PMC5895664 DOI: 10.1007/s13353-018-0434-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Revised: 02/01/2018] [Accepted: 02/11/2018] [Indexed: 11/18/2022]
Abstract
As ageing and increased body fat are the signs of insulin resistance, we have studied whether the presence of Pro12Ala and C1431T of peroxisome proliferator-activated receptor gamma 2 gene and Trp64Arg of beta 3-adrenergic receptor gene may predispose to the hyperglycaemia development in postmenopausal women, who have never undergone hypoglycaemic treatment. The distributions of selected allele and genotype frequencies were determined by the PCR–RFLP method in normo- and hyperglycaemic, who have never been diagnosed and treated for diabetes mellitus were measured. The amount of body fat and lean body mass (LBM) were assessed by the bioimpedance method and nutritional habits by 7-day dietary recall. There were no differences between the distribution of genotypes and the allele frequencies of the Pro12Ala, C1431T and Trp64Arg polymorphisms in normo- and hyperglycaemic women. Hyperglycaemic women were characterized by visceral obesity, hypertension, higher serum insulin and triglycerides, higher intake of fat and lower consumption of complex carbohydrates and B vitamins. Normoglycaemic women with Pro12Pro polymorphism acquired higher energy from dietary fat (p < 0.0276) and lower energy from carbohydrates (p < 0.0480) than normoglycaemic Ala12 carriers. Subjects with Pro12Pro polymorphism and LBM > 58% of total body mass or with Trp64Trp and normal triglycerides have higher chance of normoglycaemia. Genotyping for Pro12Ala and Trp64Arg polymorphism in postmenopausal women may have the clinical benefit of predicting hyperglycaemia, thereby contributing to the prevention of diabetes mellitus development in the future. However, not only the genetic background but also the dietary habits (intake of fat, carbohydrates and B vitamins) determine the risk of hyperglycaemia.
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Jiang J, Xie Z, Guo J, Wang Y, Liu C, Zhang S, Tang W, Chen Y. Association of PPARG rs 1801282 C>G polymorphism with risk of colorectal cancer: from a case-control study to a meta-analysis. Oncotarget 2017; 8:100558-100569. [PMID: 29246001 PMCID: PMC5725043 DOI: 10.18632/oncotarget.20138] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 07/29/2017] [Indexed: 01/13/2023] Open
Abstract
The functional single nucleotide polymorphisms in peroxisome proliferator-activated receptor gamma (PPARG) gene were predicted to be correlated with the susceptibility of colorectal cancer (CRC). The aim of the present study was to explore the relationship between PPARG rs1801282 C>G polymorphism and the risk of CRC. First, we conducted a case-control study with 387 CRC cases and 1,536 controls. We used the SNPscan method to determine the genotypes of PPARG rs1801282 C>G polymorphism. We found PPARG rs1801282 C>G polymorphism had a tendency of decreased risk to CRC risk (CG vs. CC: adjusted OR, 0.67, 95% CI = 0.43–1.04 for CG vs. CC, P = 0.073; GG vs. CC: adjusted OR, 0.68; 95% CI, 0.44–1.05; P = 0.078). The stratified analysis revealed PPARG rs1801282 C>G polymorphism also had a tendency of decreased risk to colon cancer (CG vs. CC: adjusted OR = 0.54, 95% CI = 0.27–1.08, P = 0.083). The results of subsequent meta-analysis suggested that PPARG rs1801282 C>G polymorphism might be a protective factor for CRC, especially in Asians, colon cancer and rectum cancer subgroups. In conclusion, our study indicates that PPARG rs1801282 C>G polymorphism might decrease the risk of overall CRC. Larger sample size and well-designed case-control studies are needed to confirm the potential association.
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Affiliation(s)
- Jiakai Jiang
- Department of General Surgery, Changzhou No. 3 People's Hospital, Changzhou, Jiangsu Province, China
| | - Zhiqiang Xie
- Department of Clinical Laboratory, Fujian Medical University Union Hospital, Fuzhou, Fujian Province, China
| | - JunYing Guo
- Department of Clinical Laboratory, Fujian Cancer Hospital, Fujian Medical University Cancer Hospital, Fuzhou, Fujian Province, China
| | - Yafeng Wang
- Department of Cardiology, The People's Hospital of Xishuangbanna Dai Autonomous Prefecture, Jinghong, Yunnan Province, China
| | - Chao Liu
- Department of Cardiothoracic Surgery, Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Sheng Zhang
- Department of General Surgery, Changzhou No. 3 People's Hospital, Changzhou, Jiangsu Province, China
| | - Weifeng Tang
- Department of Cardiothoracic Surgery, Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, China
| | - Yu Chen
- Cancer Bio-immunotherapy Center, Fujian Cancer Hospital and Fujian Medical University Cancer Hospital, Fuzhou, Fujian Province, China.,Department of Medical Oncology, Fujian Cancer Hospital and Fujian Medical University Cancer Hospital, Fuzhou, Fujian Province, China.,Fujian Provincial Key Laboratory of Translational Cancer Medicine, Fuzhou, Fujian Province, China
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Role of PPARG (Pro12Ala) in Malaysian type 2 diabetes mellitus patients. Int J Diabetes Dev Ctries 2016. [DOI: 10.1007/s13410-015-0462-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Lara-Riegos JC, Ortiz-López MG, Peña-Espinoza BI, Montúfar-Robles I, Peña-Rico MA, Sánchez-Pozos K, Granados-Silvestre MA, Menjivar M. Diabetes susceptibility in Mayas: Evidence for the involvement of polymorphisms in HHEX, HNF4α, KCNJ11, PPARγ, CDKN2A/2B, SLC30A8, CDC123/CAMK1D, TCF7L2, ABCA1 and SLC16A11 genes. Gene 2015; 565:68-75. [PMID: 25839936 DOI: 10.1016/j.gene.2015.03.065] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 03/13/2015] [Accepted: 03/29/2015] [Indexed: 01/11/2023]
Abstract
Association of type 2 diabetes (T2D) with common variants in HHEX, HNF4α, KCNJ11, PPARγ, CDKN2A/2B, SLC30A8, CDC123/CAMK1D, TCF7L2, ABCA1 and SLC16A11 genes have been reported, mainly in populations of European and Asian ancestry and to a lesser extent in Latin Americans. Thus, we aimed to investigate the contribution of rs1111875 (HHEX), rs1800961 (HNF4α), rs5219 (KCNJ11), rs1801282 (PPARγ), rs10811661 (CDKN2A/2B), rs13266634 (SLC30A8), rs12779790 (CDC123/CAMK1D), rs7903146 (TCF7L2), rs9282541 (ABCA1) and rs13342692 (SLC16A11) polymorphisms in the genetic background of Maya population to associate their susceptibility to develop T2D. This is one of the first studies designed specifically to investigate the inherited component of T2D in the indigenous population of Mexico. SNPs were genotyped by allelic discrimination method in 575 unrelated Maya individuals. Two SNPs rs10811661 and rs928254 were significantly associated with T2D after adjusting for BMI; rs10811661 in a recessive and rs9282541 in a dominant model. Additionally, we found phenotypical alterations associated with genetic variants: HDL to rs9282541 and insulin to rs13342692. In conclusion, these findings support an association of genetic polymorphisms to develop T2D in Maya population.
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Affiliation(s)
- J C Lara-Riegos
- Unidad de Genómica de Poblaciones Aplicada a la Salud, Facultad de Química Universidad Nacional Autónoma de México - Instituto Nacional de Medicina Genómica, Mexico
| | - M G Ortiz-López
- Laboratory of Molecular Endocrinology, Hospital Juárez de México, Mexico
| | - B I Peña-Espinoza
- Unidad de Genómica de Poblaciones Aplicada a la Salud, Facultad de Química Universidad Nacional Autónoma de México - Instituto Nacional de Medicina Genómica, Mexico
| | - I Montúfar-Robles
- Laboratory of Molecular Endocrinology, Hospital Juárez de México, Mexico
| | - M A Peña-Rico
- Unidad de Genómica de Poblaciones Aplicada a la Salud, Facultad de Química Universidad Nacional Autónoma de México - Instituto Nacional de Medicina Genómica, Mexico
| | - K Sánchez-Pozos
- Unidad de Genómica de Poblaciones Aplicada a la Salud, Facultad de Química Universidad Nacional Autónoma de México - Instituto Nacional de Medicina Genómica, Mexico
| | - M A Granados-Silvestre
- Unidad de Genómica de Poblaciones Aplicada a la Salud, Facultad de Química Universidad Nacional Autónoma de México - Instituto Nacional de Medicina Genómica, Mexico
| | - M Menjivar
- Unidad de Genómica de Poblaciones Aplicada a la Salud, Facultad de Química Universidad Nacional Autónoma de México - Instituto Nacional de Medicina Genómica, Mexico.
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Black MH, Wu J, Takayanagi M, Wang N, Taylor KD, Haritunians T, Trigo E, Lawrence JM, Watanabe RM, Buchanan TA, Xiang AH. Variation in PPARG is associated with longitudinal change in insulin resistance in Mexican Americans at risk for type 2 diabetes. J Clin Endocrinol Metab 2015; 100:1187-95. [PMID: 25584717 PMCID: PMC4333029 DOI: 10.1210/jc.2014-3246] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CONTEXT Peroxisome proliferator-activated receptor gamma (PPARG) is a susceptibility locus for type 2 diabetes mellitus (T2DM). Although cross-sectional associations have been reported, primarily for Pro12Ala, few longitudinal studies in nondiabetic populations have been conducted. OBJECTIVE This study aimed to examine whether and to what extent variation in PPARG is associated with longitudinal changes in anthropometric and metabolic traits in Mexican Americans at risk for T2DM. SETTING AND DESIGN Subjects were participants of BetaGene, a family-based study of obesity, insulin resistance, and β-cell function, who completed a baseline and follow-up study visit (n = 378; mean followup, 4.6 ± 1.5 y). Phenotypes included body fat assessed by dual-energy x-ray absorptiometry; insulin sensitivity (SI), acute insulin response, and β-cell function (disposition index; DI) were estimated from iv glucose tolerance tests with Minimal Model analysis. Eighteen tag single nucleotide polymorphisms (SNPs) capturing variation in a 156-kb region surrounding PPARG were tested for association with changes in longitudinal traits. P-values were Bonferroni-corrected for multiple testing. RESULTS Six SNPs (rs2972164, rs11128598, rs17793951, rs1151996, rs1175541, rs3856806) were significantly associated with rate of change in SI after adjustment for age, sex, and body fat percentage, but not with changes in adiposity. rs17793951 also had a significant effect on change in DI over time. Association between rs1175541 and change in SI varied by changes in adiposity such that only carriers of the minor allele who reduced body fat over followup improved SI. rs1306470 (captured Pro12Ala, r(2) = 0.9) was not associated with rates of change in any traits and its effects were not modified by changes in adiposity. CONCLUSIONS Variation in PPARG, but not Pro12Ala, contributes to declining SI and concomitant deterioration in β-cell function in Mexican Americans at risk for T2DM.
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Affiliation(s)
- Mary Helen Black
- Department of Research & Evaluation (M.H.B., J.W., M.T., J.M.L., A.H.X.), Kaiser Permanente Southern California, Pasadena, California; Department of Preventive Medicine (N.W., R.M.W., T.A.B.), Keck School of Medicine of University of Southern California (USC), Los Angeles, California; Medical Genetics Institute (K.D.T., T.H.), Cedars-Sinai Medical Center, Los Angeles, California; Department of Medicine (E.T.), Keck School of Medicine of USC, Los Angeles, California; USC Diabetes and Obesity Research Institute (R.M.W., T.A.B.), Los Angeles, California; Department of Physiology & Biophysics (R.M.W., T.A.B.), Keck School of Medicine of USC, Los Angeles, California
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Nagao M, Sato Y, Yamauchi A. A meta-analysis of the association of PPARγ rs1801282 polymorphism and NSAID usage with the risk of developing cancer. Biol Pharm Bull 2015; 37:1062-7. [PMID: 24882418 DOI: 10.1248/bpb.b14-00160] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Use of nonsteroidal anti-inflammatory drugs (NSAIDs) is correlated with a reduced risk of cancer through the reduction of inflammation, which is an important risk factor. Several studies have investigated polymorphisms in the peroxisome proliferator-activated receptor gamma (PPARγ) gene and NSAID use in association with cancer risk. However, these studies yielded mixed results. Therefore, we performed a meta-analysis to evaluate the association of PPARγ polymorphisms and NSAID usage with cancer risk. We conducted a comprehensive search of PubMed through May 2013. Odds ratios (ORs) with corresponding 95% confidence intervals (CIs) were calculated using the fixed-effect or random-effect model. A comprehensive search of the database revealed 6 studies that fulfilled the inclusion criteria. NSAID use was significantly associated with decreased cancer risk regardless of PPARγ rs1801282 genotypes. In a stratified analysis by cancer type, NSAID users who were minor allele carriers had significantly decreased colon cancer risk compared to non-NSAID users (OR=0.73, 95% CI=0.57-0.93), whereas NSAID users homozygous for the major allele had significantly decreased risk for cancers other than colon cancer compared to non-NSAID users (OR=0.79, 95% CI=0.69-0.91). Our results suggest that the association of PPARγ rs1801282 polymorphism and NSAID use with the risk of cancer may differ according to cancer type.
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Affiliation(s)
- Mai Nagao
- Department of Pharmaceutical Information Science, Institute of Health Biosciences, The University of Tokushima Graduate School
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Pattanayak AK, Bankura B, Balmiki N, Das TK, Chowdhury S, Das M. Role of peroxisome proliferator-activated receptor gamma gene polymorphisms in type 2 diabetes mellitus patients of West Bengal, India. J Diabetes Investig 2014; 5:188-91. [PMID: 24843759 PMCID: PMC4023582 DOI: 10.1111/jdi.12130] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 06/26/2013] [Accepted: 06/30/2013] [Indexed: 01/10/2023] Open
Abstract
AIMS/INTRODUCTION Peroxisome proliferator activated receptor gamma (PPARG) is a nuclear hormone receptor of the ligand-dependent transcription factor involved in adipogenesis, and a molecular target of the insulin sensitizer, thiazolidinediones. The present study aimed to investigate whether the PPARG gene is associated with type 2 diabetes mellitus and its related traits within the population of West Bengal, India. MATERIALS AND METHODS The study participants (200 type 2 diabetes mellitus and 200 normal individuals) were chosen randomly, and the variants were screened by direct sequencing. RESULTS The results showed that rs1801282 (odds ratio 0.66; 95% confidence interval 0.15-2.96; P = 0.57) and rs3856806 (odds ratio 1.23; 95% confidence interval 0.73-2.06; P = 0.44) variants of the PPARG gene were not associated with type 2 diabetes mellitus. CONCLUSIONS The results showed that the PPARG gene was not associated with type 2 diabetes mellitus in our study population. As the lack of association might come from the small sample size, further studies with larger sample size are required to verify the present observation.
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Affiliation(s)
| | | | - Nisha Balmiki
- Department of ZoologyUniversity of CalcuttaKolkataIndia
| | | | - Subhankar Chowdhury
- Department of EndocrinologyInstitute of Post Graduate Medical Education & ResearchKolkataIndia
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Wang X, Liu J, Ouyang Y, Fang M, Gao H, Liu L. The association between the Pro12Ala variant in the PPARγ2 gene and type 2 diabetes mellitus and obesity in a Chinese population. PLoS One 2013; 8:e71985. [PMID: 23991018 PMCID: PMC3749141 DOI: 10.1371/journal.pone.0071985] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Accepted: 07/05/2013] [Indexed: 12/25/2022] Open
Abstract
Background Conflicting results have been reported on the association of the Pro12Ala polymorphism of the PPARγ2 gene with the risk of type 2 diabetes or obesity. Methods and Findings A total of 3146 subjects with 1145 cases of type 2 diabetes and 2001 healthy controls were included in the study. Genomic DNA was obtained from blood samples and the screening for the gene polymorphisms was done using an allelic discrimination assay-by-design TaqMan method. Overall, the Ala allele frequency was 5.6% in control subjects and 3.9% in diabetes subjects (P = 0.023). We found a statistically significant association of carriers of the Ala allele with greater homoeostasis model assessment of beta cell function index in all subjects (P = 0.046). After controlling for confounders, carriers of the Ala allele had a decreased risk of diabetes compared with noncarriers [odds ratio (OR) 0.64, 95% confidence interval (CI) 0.49–0.83; P = 0.001]. A beneficial effect of the Ala allele was also observed for obesity (OR 0.64, 95% CI 0.42–0.96; P = 0.030). Conclusion Our results suggested that the presence of the Ala allele may contribute to improved insulin secretory capacity and may confer protection from type 2 diabetes and obesity in the Chinese population.
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Affiliation(s)
- Xia Wang
- Department of Maternal and Child Health Care, School of Public Health, Shandong University, Jinan, China
- Department of Nutrition and Food Hygiene and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jun Liu
- Department of Nutrition and Food Hygiene and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yingying Ouyang
- Department of Nutrition and Food Hygiene and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Min Fang
- Department of Nutrition and Food Hygiene and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hui Gao
- Department of Nutrition and Food Hygiene and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liegang Liu
- Department of Nutrition and Food Hygiene and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- * E-mail:
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Maciejewska-Karlowska A, Sawczuk M, Cieszczyk P, Zarebska A, Sawczyn S. Association between the Pro12Ala polymorphism of the peroxisome proliferator-activated receptor gamma gene and strength athlete status. PLoS One 2013; 8:e67172. [PMID: 23799144 PMCID: PMC3683011 DOI: 10.1371/journal.pone.0067172] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Accepted: 05/16/2013] [Indexed: 11/24/2022] Open
Abstract
Background The 12Ala allele of the Peroxisome Proliferator-Activated Receptor gamma gene (PPARG) Pro12Ala polymorphism produces a decreased binding affinity of the PPARγ2 protein, resulting in low activation of the target genes. The 12Ala allele carriers display a significantly improved insulin sensitivity that may result in better glucose utilisation in working skeletal muscles. We hypothesise that the PPARG 12Ala allele could be associated with strength athlete status in Polish athletes. Methodology The genotype distribution of PPARG Pro12Ala was examined in 660 Polish athletes. The athletes were stratified into four subgroups: endurance, strength-endurance, sprint-strength and strength. Control samples were prepared from 684 unrelated sedentary volunteers. A χ2 test was used to compare the PPARG Pro12Ala allele and genotype frequencies between the different groups of athletes and control subjects. Bonferroni’s correction for multiple testing was applied. Results A statistically significant higher frequency of PPARG 12Ala alleles was observed in the subgroup of strength athletes performing short-term and very intense exertion characterised by predominant anaerobic energy production (13.2% vs. 7.5% in controls; P = 0.0007). Conclusion The PPARG 12Ala allele may be a relevant genetic factor favouring strength abilities in professional athletes, especially in terms of insulin-dependent metabolism, a shift of the energy balance towards glucose utilisation and the development of a favourable weight-to-strength ratio.
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Affiliation(s)
- Agnieszka Maciejewska-Karlowska
- Department of Biological Bases of Physical Culture, Faculty of Physical Education and Health Promotion, University of Szczecin, Szczecin, Poland.
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Gu SJ, Guo ZR, Wu M, Ding Y, Luo WS. Association of Peroxisome Proliferator-Activated Receptor γ Polymorphisms and Haplotypes with Essential Hypertension. Genet Test Mol Biomarkers 2013; 17:418-23. [DOI: 10.1089/gtmb.2012.0425] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Shu-Jun Gu
- Department of Epidemiology, School of Public Health, Soochow University, Suzhou, China
| | - Zhi-Rong Guo
- Department of Epidemiology, School of Public Health, Soochow University, Suzhou, China
| | - Ming Wu
- Center for Disease Control of Jiangsu Province, Nanjing, China
| | - Yi Ding
- Department of Epidemiology, School of Public Health, Soochow University, Suzhou, China
| | - Wen-Shu Luo
- Department of Epidemiology, School of Public Health, Soochow University, Suzhou, China
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Richter D, Harsch S, Strohmeyer A, Hirobe-Jahn S, Schimmel S, Renner O, Müller O, Schäffeler E, Kratzer W, Schwab M, Stange EF. MALDI-TOF mass spectrometry screening of cholelithiasis risk markers in the gene of HNF1alpha. J Proteomics 2012; 75:3386-99. [DOI: 10.1016/j.jprot.2012.04.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Revised: 04/23/2012] [Accepted: 04/24/2012] [Indexed: 01/26/2023]
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Shi H, Yu X, Li Q, Ye X, Gao Y, Ma J, Cheng J, Lu Y, Du W, Du J, Ye Q, Zhao X, Zhou L. Association between PPAR-γ and RXR-α gene polymorphism and metabolic syndrome risk: a case-control study of a Chinese Han population. Arch Med Res 2012; 43:233-42. [PMID: 22475777 DOI: 10.1016/j.arcmed.2012.03.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Accepted: 02/21/2012] [Indexed: 10/28/2022]
Abstract
BACKGROUND AND AIMS Polymorphisms in peroxisome proliferator activated receptor-γ (PPAR-γ) and retinoid X receptor-α (RXR-α) gene may alter metabolic syndrome (MetS) risks by increasing or decreasing the human adiponectin promoter activity in cells. To test this statement, three potentially functional SNPs of PPAR-γ and four SNPs of RXR-α with minor allele frequency (MAF) ≥0.05 in the Chinese Han population were identified from NCBI dbSNPs database to evaluate their associations with MetS. METHODS TaqMan assay was performed to test the genotypes in MetS patients (n = 901) and normal controls (n = 1009). Serum adiponectin concentration was measured by ELISA kit. RESULTS The variant genotypes rs2920502CG and CG/CC, rs4240711GG and AG/GG, rs4842194CC and CT/CC, rs3132291CT, CC and CT/CC were associated with MetS. Furthermore, in the haplotype of PPAR-γ gene, compared with the most common haplotype GC, haplotype CC was associated with an increased risk of MetS (crude p = 0.017). In the haplotype of RXR-α gene, haplotype GCGC was associated with a significant protective effect for MetS [adjusted p = 0.002, OR (95% CI) = 0.718 (0.585-0.882)] compared with the most common haplotype GTAT. After taking smoking, alcohol consumption and physical activity as environmental adjustment factors into the analysis, the result showed A1 A2 A4 A5 A6 A7 B1 (rs3856806, rs2920502, rs180128, rs1045570, rs3132291, rs4240711, rs4842194) was the best model (cross-validation consistency 10/10, p = 0.0107). CONCLUSIONS The present study suggested that the variant genotypes in PPAR-γ gene could increase the risk of MetS; however, genotypes in RXR-α gene could decrease the risk of MetS in a Chinese Han population.
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Affiliation(s)
- Hui Shi
- Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Jiangsu, China
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Nazih H, Raffi F, Taïeb A, Reynes J, Choutet P, Cassuto JP, Ferry T, Chêne G, Leport C, Bard, for the APROCO-COPILOTE (ANRS JM. Peroxisome proliferator activating receptor alpha and gamma polymorphisms and metabolic abnormalities in HIV-infected patients receiving highly active antiretroviral therapy: the ANRS CO8 APROCO-COPILOTE study. AIDS Res Hum Retroviruses 2012; 28:393-9. [PMID: 21877956 DOI: 10.1089/aid.2010.0311] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Highly active antiretroviral therapy (HAART) is associated with fat redistribution and metabolic disorders. The present study was undertaken to evaluate the association between peroxisome proliferator activated receptor (PPAR)α and PPARγ polymorphisms, two genes involved in lipid metabolism and adipocyte differentiation, and elements of the metabolic syndrome, lipodystrophy, or carbohydrate metabolism abnormalities in patients receiving HAART. The frequency distribution of rare alleles for PPARα (L162V) and PPARγ (P12A and H449H) was compared using the chi square test in 363 HIV-1-infected patients classified according to the presence or absence of the metabolic syndrome after 48 months of follow-up on their first PI-containing regimen. The P12A rare g allele was present in 12% patients with normal glucose metabolism, 11% patients with impaired glucose tolerance or impaired fasting glucose, and 35% patients with diabetes (p=0.014). The rare g allele for L162V was present in 14% of patients free of hypertriglyceridemia and in 7% patients with hypertriglyceridemia (p=0.04). The rare g allele for L162V was found in 15% of patients free of any sign of lipodystrophy and 8% with at least one sign of lipodystrophy (p=0.04) and the rare t allele for H449H was found in 14% of patients free of any sign of lipodystrophy and 23% of patients with at least one sign of lipodystrophy (p=0.05). There was no convincing association between any polymorphism of PPARα and PPARγ and each individual component of the metabolic syndrome, except for the relationship of the P12A polymorphism with diabetes. Confirmatory studies on a larger number of individuals are needed.
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Affiliation(s)
| | | | | | - Jacques Reynes
- Service des maladies infectieuses, CHU, Montpellier, France
| | | | | | - Tristan Ferry
- Service des maladies infectieuses, CHU, Lyon, France
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Franck N, Länne T, Astrand O, Engvall J, Lindström T, Ostgren CJ, Nystrom FH. Cardiovascular risk factors related to the PPARγ Pro12Ala polymorphism in patients with type 2 diabetes are gender dependent. Blood Press 2011; 21:122-7. [PMID: 22017455 DOI: 10.3109/08037051.2011.623349] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The interaction of the PPARγ Pro12Ala polymorphism with diabetes and cardiovascular risk is controversial. We studied 173 women and 309 men in the observational CARDIPP trial in which determination of left ventricular mass, carotid intima-media thickness (IMT) and pulse wave velocity (PWV) were performed. Blood pressures were measured with 24-h ambulatory technique (ABP). Heterozygotes and homozygotes of Ala were defined as Ala in the analyses. Men with Ala-isoform displayed higher waist circumference (Ala: 107 ± 14 cm, Pro: 104 ± 11 cm, p = 0.045) and body weight (Ala: 95.7 ± 18 kg, Pro: 91.6 ± 14 kg, p = 0.042) than Pro-homozygotes. Men with ALA-isoform also showed higher systolic ABP levels (Ala: 134 ± 15 mmHg, Pro: 130 ± 14 mmHg, p = 0.004), whereas left ventricular mass index, IMT and PWV were unrelated to isoforms. In contrast, carotid-radial PWV was lower in women with the Ala-isoform (Ala: 7.9 ± 1.0 m/s, Pro: 8.5 ± 1.3 m/s, p = 0.01) and levels of apolipoprotein A1 were higher (Ala: 1.43 ± 0.27 g/l, Pro: 1.35 ± 0.17 g/l, p = 0.03). In conclusion, we found that men with type 2 diabetes having the Ala-isoform of PPARγ Pro12Ala had an unfavorable cardiovascular risk profile, whereas women with this isoform had lower carotid-radial PWV and higher apolipoprotein A1 levels suggesting a beneficial prognosis. These differences according to gender of the ALA isoform in type 2 diabetes deserve further attention.
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Affiliation(s)
- Niclas Franck
- Department of Medical and Health Sciences, Division of Cardiovascular Medicine, Linköping University, Linköping, Sweden
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Huang X, Zhao J, Zhao T. Effects of peroxisome proliferator activated receptor-gamma 2 gene Pro12Ala polymorphism on fasting blood lipids: A meta-analysis. Atherosclerosis 2011; 215:136-44. [DOI: 10.1016/j.atherosclerosis.2010.11.043] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2010] [Revised: 11/28/2010] [Accepted: 11/30/2010] [Indexed: 11/27/2022]
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Jermendy A, Körner A, Kovács M, Madácsy L, Cseh K. PPAR-gamma2 pro12Ala polymorphism is associated with post-challenge abnormalities of glucose homeostasis in children and adolescents with obesity. J Pediatr Endocrinol Metab 2011; 24:55-9. [PMID: 21528816 DOI: 10.1515/jpem.2011.111] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
AIM The aim of the study was to investigate the association between PPAR-gamma2 Pro12Ala polymorphism and laboratory characteristics of carbohydrate metabolism in children and adolescents with obesity. In addition, serum levels of tumor necrosis factor (TNF)-alpha, and soluble form of its receptors (sTNFR1 and sTNFR2) were assessed. METHODS In a cross-sectional study, 79 obese children and adolescents of Caucasian origin were investigated. PPAR-gamma2 Pro12Ala polymorphism was determined using polymerase chain reaction--restriction fragment length polymorphism technique. Serum levels of TNF-alpha, sTNFR1 and sTNFR2 were measured by enzyme amplified sensitivity immunoassay. RESULTS The minor Ala allele frequency was found to be 14.56% in our cohort. No significant differences in age, BMI, waist circumference, blood pressure, serum lipid, uric acid, TNF-alpha, sTNFR1 and sTNFR2 values were found between carriers of the Ala allele (Pro/Ala and Ala/Ala; n=21) vs. homozygous carriers of the Pro allele (Pro/Pro; n=58). However, post-challenge (120 min) plasma glucose and insulin values were significantly lower in Ala allele carriers vs. homozygous Pro allele carriers (6.56 +/- 0.26 vs. 7.36 +/- 0.25 mmol/L and 65.9 +/- 13.8 vs. 111.8 +/- 20.7 microU/mL, respectively; p < 0.05); while no significant differences were found at fasting state. CONCLUSIONS The association between PPAR-gamma2 Prol2Ala polymorphism and glucose metabolism is already present in children and adolescents with obesity who might be at the very beginning of the natural course of type 2 diabetes. At this stage, higher insulin sensitivity can be detected in Ala allele carriers compared to homozygous Pro subjects at post-challenge but not in fasting state; however, the TNF-system seems not to be involved in the alteration of glucose homeostasis due to PPAR-gamma2 Pro12Ala polymorphism.
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Affiliation(s)
- Agnes Jermendy
- 1st Department of Paediatrics, Semmelweis University, Budapest, Hungary.
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Chauhan G, Spurgeon CJ, Tabassum R, Bhaskar S, Kulkarni SR, Mahajan A, Chavali S, Kumar MK, Prakash S, Dwivedi OP, Ghosh S, Yajnik CS, Tandon N, Bharadwaj D, Chandak GR. Impact of common variants of PPARG, KCNJ11, TCF7L2, SLC30A8, HHEX, CDKN2A, IGF2BP2, and CDKAL1 on the risk of type 2 diabetes in 5,164 Indians. Diabetes 2010; 59:2068-74. [PMID: 20424228 PMCID: PMC2911051 DOI: 10.2337/db09-1386] [Citation(s) in RCA: 148] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OBJECTIVE Common variants in PPARG, KCNJ11, TCF7L2, SLC30A8, HHEX, CDKN2A, IGF2BP2, and CDKAL1 genes have been shown to be associated with type 2 diabetes in European populations by genome-wide association studies. We have studied the association of common variants in these eight genes with type 2 diabetes and related traits in Indians by combining the data from two independent case-control studies. RESEARCH DESIGN AND METHODS We genotyped eight single nucleotide polymorphisms (PPARG-rs1801282, KCNJ11-rs5219, TCF7L2-rs7903146, SLC30A8-rs13266634, HHEX-rs1111875, CDKN2A-rs10811661, IGF2BP2-rs4402960, and CDKAL1-rs10946398) in 5,164 unrelated Indians of Indo-European ethnicity, including 2,486 type 2 diabetic patients and 2,678 ethnically matched control subjects. RESULTS We confirmed the association of all eight loci with type 2 diabetes with odds ratio (OR) ranging from 1.18 to 1.89 (P = 1.6 x 10(-3) to 4.6 x 10(-34)). The strongest association with the highest effect size was observed for TCF7L2 (OR 1.89 [95% CI 1.71-2.09], P = 4.6 x 10(-34)). We also found significant association of PPARG and TCF7L2 with homeostasis model assessment of beta-cell function (P = 6.9 x 10(-8) and 3 x 10(-4), respectively), which looked consistent with recessive and under-dominant models, respectively. CONCLUSIONS Our study replicates the association of well-established common variants with type 2 diabetes in Indians and shows larger effect size for most of them than those reported in Europeans.
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Affiliation(s)
- Ganesh Chauhan
- Functional Genomics Unit, Institute of Genomics and Integrative Biology (CSIR), Delhi, India
| | - Charles J. Spurgeon
- Genome Research Group, Centre for Cellular and Molecular Biology (CSIR), Hyderabad, India
| | - Rubina Tabassum
- Functional Genomics Unit, Institute of Genomics and Integrative Biology (CSIR), Delhi, India
| | - Seema Bhaskar
- Genome Research Group, Centre for Cellular and Molecular Biology (CSIR), Hyderabad, India
| | - Smita R. Kulkarni
- Diabetes Unit, King Edward Memorial Hospital and Research Centre, Rasta Peth, Pune, India
| | - Anubha Mahajan
- Functional Genomics Unit, Institute of Genomics and Integrative Biology (CSIR), Delhi, India
| | - Sreenivas Chavali
- Functional Genomics Unit, Institute of Genomics and Integrative Biology (CSIR), Delhi, India
| | - M.V. Kranthi Kumar
- Genome Research Group, Centre for Cellular and Molecular Biology (CSIR), Hyderabad, India
| | - Swami Prakash
- Genome Research Group, Centre for Cellular and Molecular Biology (CSIR), Hyderabad, India
| | - Om Prakash Dwivedi
- Functional Genomics Unit, Institute of Genomics and Integrative Biology (CSIR), Delhi, India
| | - Saurabh Ghosh
- Human Genetics Unit, Indian Statistical Institute, Kolkata, India
| | - Chittaranjan S. Yajnik
- Diabetes Unit, King Edward Memorial Hospital and Research Centre, Rasta Peth, Pune, India
| | - Nikhil Tandon
- Department of Endocrinology, All India Institute of Medical Sciences, New Delhi, India
| | - Dwaipayan Bharadwaj
- Functional Genomics Unit, Institute of Genomics and Integrative Biology (CSIR), Delhi, India
- Corresponding authors: Dwaipayan Bharadwaj, , and Giriraj R. Chandak,
| | - Giriraj R. Chandak
- Genome Research Group, Centre for Cellular and Molecular Biology (CSIR), Hyderabad, India
- Corresponding authors: Dwaipayan Bharadwaj, , and Giriraj R. Chandak,
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The Ala allele in the PPAR-gamma2 gene is associated with reduced risk of type 2 diabetes mellitus in Caucasians and improved insulin sensitivity in overweight subjects. Br J Nutr 2010; 104:488-97. [PMID: 20420754 DOI: 10.1017/s0007114510000851] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The purpose of the present study was to identify the association of the Pro12Ala polymorphism in the PPAR-gamma2 gene with diabetes, insulinaemia and insulin resistance. A meta-analysis study was carried out based on studies conducted in the last 10 years, using the databases PubMed, ISI Web of Knowledge, High Wire Press and Scielo, and the reference lists of the obtained articles. We included original studies that showed the relationship between the Pro12Ala polymorphism in the PPAR-gamma2 gene and type 2 diabetes mellitus (T2DM), insulinaemia and insulin resistance. Statistical analyses were conducted using the program RevMAn 5.0. The Mantel-Haenszel test was used to estimate the OR and the 95 % CI of the dichotomous variable, while the standardised effect size was used to estimate the average standardised mean difference and 95 % CI of continuous variables. The studies were subgrouped by ethnicity and overweight status. Forty-one studies were analysed, including a global sample of 30 612 subjects. We found a significant association of the Ala allele with the lowest risk of T2DM in Caucasians (OR 0.80; 95 % CI 0.65, 0.98), lower serum insulin (standardised effect size: - 0.05; 95 % CI - 0.09, - 0.00; P = 0.04), and greater sensitivity to insulin in overweight individuals (homeostasis model assessment of insulin resistance standardised effect size: - 0.07; 95 % CI - 0.13, - 0.01; P = 0.02). Considering that the Pro12Ala polymorphism in the PPAR-gamma2 gene is one of the factors related to insulin sensitivity, the present study demonstrated a significant effect of the Ala allele on lower development of T2DM in Caucasians and greater sensitivity to insulin in overweight subjects.
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Pro12Ala gene polymorphism in the peroxisome proliferator-activated receptor gamma as a risk factor for the onset of type 2 diabetes mellitus in the Serbian population. ARCH BIOL SCI 2010. [DOI: 10.2298/abs1002263s] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
The peroxisome proliferator-activated receptor gamma (PPAR?) is a gene candidate for the onset of type 2 diabetes mellitus (T2DM). We investigated the association of the PPAR? Pro12Ala gene with the onset of T2DM for the first time in the Serbian population. The study population consisted of 197 controls and 163 T2DM patients. The 12Ala allele tended to be more frequent in the group of T2DM patients (0.11) compared to the control subjects (0.09). The results from this study indicate that the PPAR?2 12Ala allele presents a non-significant risk factor for T2DM development in the Serbian population.
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Gao L, Wang L, Yun H, Su L, Su X. Association of the PPARγ2 gene Pro12Ala variant with primary hypertension and metabolic lipid disorders in Han Chinese of Inner Mongolia. GENETICS AND MOLECULAR RESEARCH 2010; 9:1312-1320. [DOI: 10.4238/vol9-3gmr833] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2023]
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Peroxisome proliferator-activated receptor gamma polymorphisms and coronary heart disease. PPAR Res 2009; 2009:543746. [PMID: 20016803 PMCID: PMC2792957 DOI: 10.1155/2009/543746] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2009] [Accepted: 08/26/2009] [Indexed: 12/20/2022] Open
Abstract
Single nucleotide polymorphisms (SNPs) in the peroxisome proliferator-activated receptor γ (PPARG) gene have been associated with cardiovascular risk factors, particularly obesity and diabetes. We assessed the relationship between 4 PPARG SNPs (C-681G, C-689T, Pro12Ala, and C1431T) and coronary heart disease (CHD) in the PRIME (249 cases/494 controls, only men) and ADVANCE (1,076 cases/805 controls, men or women) studies. In PRIME, homozygote individuals for the minor allele of the PPARG C-689T, Pro12Ala, and C1431T SNPs tended to have a higher risk of CHD than homozygote individuals for the frequent allele (adjusted OR [95% CI] = 3.43 [0.96–12.27], P = .058, 3.41 [0.95–12.22], P = .060 and 5.10 [0.99–26.37], P = .050, resp.). No such association could be detected in ADVANCE. Haplotype distributions were similar in cases and control in both studies. A meta-analysis on the Pro12Ala SNP, based on our data and 11 other published association studies (6,898 CHD cases/11,287 controls), revealed that there was no evidence for a significant association under the dominant model (OR = 0.99
[0.92–1.07], P = .82). However, there was a borderline association under the recessive model (OR = 1.29 [0.99–1.67], P = .06) that became significant when considering men only (OR = 1.73 [1.20–2.48], P = .003). In conclusion, the PPARG Ala12Ala genotype might be associated with a higher CHD risk in men but further confirmation studies are needed.
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Ben Ali S, Ben Yahia F, Sediri Y, Kallel A, Ftouhi B, Feki M, Elasmi M, Haj-Taieb S, Souheil O, Sanhagi H, Slimane H, Jemaa R, Kaabachi N. Gender-specific effect of Pro12Ala polymorphism in peroxisome proliferator-activated receptor γ-2 gene on obesity risk and leptin levels in a Tunisian population. Clin Biochem 2009; 42:1642-7. [PMID: 19733160 DOI: 10.1016/j.clinbiochem.2009.08.019] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2009] [Revised: 08/12/2009] [Accepted: 08/27/2009] [Indexed: 01/18/2023]
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Mirzaei H, Akrami SM, Golmohammadi T, Doosti M, Heshmat R, Nakhjavani M, Amiri P. Polymorphism of Pro12Ala in the Peroxisome Proliferator-Activated Receptor γ2 Gene in Iranian Diabetic and Obese Subjects. Metab Syndr Relat Disord 2009; 7:453-8. [DOI: 10.1089/met.2008.0099] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Hassan Mirzaei
- Department of Hygiene, Golestan University of Medical Sciences, Gorgan, Iran
- Department of Clinical Biochemistry, School of Medicine, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Mohammad Akrami
- Endocrinology and Metabolism Research Center, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran
- Medical Genetics Department, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Taghi Golmohammadi
- Department of Clinical Biochemistry, School of Medicine, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahmood Doosti
- Department of Clinical Biochemistry, School of Medicine, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Ramin Heshmat
- Endocrinology and Metabolism Research Center, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Manouchehr Nakhjavani
- Endocrinology and Metabolism Research Center, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Parvin Amiri
- Endocrinology and Metabolism Research Center, Imam Khomeini Hospital, Tehran University of Medical Sciences, Tehran, Iran
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Ji-Rong Y, Bi-Rong D, Chang-Quan H, Zhen-Chan L, Hong-Mei W, Yan-Ling Z, Mattis TA. Pro12Ala Polymorphism in PPARγ2 Associated with Depression in Chinese Nonagenarians/Centenarians. Arch Med Res 2009; 40:411-5. [DOI: 10.1016/j.arcmed.2009.05.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2008] [Accepted: 05/12/2009] [Indexed: 01/09/2023]
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PPARgamma Promoter Polymorphisms and Acute Coronary Syndrome. Atherosclerosis 2009; 205:186-91. [DOI: 10.1016/j.atherosclerosis.2008.11.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2008] [Revised: 10/22/2008] [Accepted: 11/09/2008] [Indexed: 11/19/2022]
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Sokkar S, El-Sharnouby JA, Helmy A, El-Bendary A, Ahmad LS, Okasha K. Role of Peroxisome Proliferator-Activated Receptor gamma 2 (PPAR-γ2) Gene Polymorphism in Type 2 Diabetes Mellitus. ELECTRONIC JOURNAL OF GENERAL MEDICINE 2009. [DOI: 10.29333/ejgm/82645] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Yang LL, Hua Q, Liu RK, Yang Z. Association between two common polymorphisms of PPARgamma gene and metabolic syndrome families in a Chinese population. Arch Med Res 2009; 40:89-96. [PMID: 19237017 DOI: 10.1016/j.arcmed.2008.11.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2008] [Accepted: 11/03/2008] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND AIMS We investigated the association between the two common polymorphisms, C1431T and Pro12Ala of PPARgamma gene, and metabolic syndrome (MS) in a Chinese population. METHODS We included 423 subjects with MS and families without MS. Subjects were divided into three groups: MS probands and first- and second-degree relatives of probands, spouses and controls. Each group was then divided into two subgroups according to genotype (Pro/Pro and Pro/Ala for Pro12Ala, CC and CT + TT for 1431C/T). Anthropometric indices, fasting plasma glucose, lipid profile, Sv1 + Rv5 of electrocardiogram and single nucleotide polymorphisms were detected. RESULTS Frequencies of C1431T genotypes, but not Pro12Ala, were different among the three groups. MS patients with Pro/Ala genotype had higher fasting blood sugar (FBS) levels and Sv1 + Rv5. Controls with Ala allele had lower total cholesterol levels. In relatives, Ala carriers had higher high-density lipoprotein cholesterol (HDL-c) levels. BMI of the different groups were not significant. MS patients with T allele had higher FBS and Sv1 + Rv5. In relatives of MS subjects, T-allele carriers had lower blood uric acid, creatinine and higher HDL-c levels and Sv1 + Rv5. CONCLUSIONS C1431T, but not Pro12Ala polymorphisms, are associated with MS in a Chinese population. In MS patients, Ala allele and T allele are both associated with higher fasting blood sugar and higher left ventricular voltage. In controls, Ala carriers have lower total cholesterol. In MS relatives, Ala carriers had higher HDL-c levels and T-allele carriers had lower uric acid, creatinine and higher HDL-c levels and left ventricular voltage.
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Affiliation(s)
- Li Lan Yang
- Department of Cardiology, Xuanwu Hospital of the Capital University of Medical Science, Beijing, China
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The role of obesity in the pathogenesis of hypertension. ACTA ACUST UNITED AC 2008; 5:101-11. [DOI: 10.1038/ncpneph1022] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2008] [Accepted: 11/17/2008] [Indexed: 02/01/2023]
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Lu Z, Dong B, Mo X, Chen T, Wu H, Zhang Y, Xiao H. Pro12Ala polymorphism in PPAR γ 2 associated with essential hypertension in Chinese nonagenarians/centenarians. Exp Gerontol 2008; 43:1108-13. [DOI: 10.1016/j.exger.2008.08.046] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2008] [Revised: 08/16/2008] [Accepted: 08/19/2008] [Indexed: 12/26/2022]
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Genetic prediction of the metabolic syndrome. Diabetes & Metabolic Syndrome: Clinical Research & Reviews 2008. [DOI: 10.1016/j.dsx.2008.07.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Sanghera DK, Ortega L, Han S, Singh J, Ralhan SK, Wander GS, Mehra NK, Mulvihill JJ, Ferrell RE, Nath SK, Kamboh MI. Impact of nine common type 2 diabetes risk polymorphisms in Asian Indian Sikhs: PPARG2 (Pro12Ala), IGF2BP2, TCF7L2 and FTO variants confer a significant risk. BMC MEDICAL GENETICS 2008; 9:59. [PMID: 18598350 PMCID: PMC2481250 DOI: 10.1186/1471-2350-9-59] [Citation(s) in RCA: 208] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/21/2007] [Accepted: 07/03/2008] [Indexed: 12/15/2022]
Abstract
Background Recent genome-wide association (GWA) studies have identified several unsuspected genes associated with type 2 diabetes (T2D) with previously unknown functions. In this investigation, we have examined the role of 9 most significant SNPs reported in GWA studies: [peroxisome proliferator-activated receptor gamma 2 (PPARG2; rs 1801282); insulin-like growth factor two binding protein 2 (IGF2BP2; rs 4402960); cyclin-dependent kinase 5, a regulatory subunit-associated protein1-like 1 (CDK5; rs7754840); a zinc transporter and member of solute carrier family 30 (SLC30A8; rs13266634); a variant found near cyclin-dependent kinase inhibitor 2A (CDKN2A; rs10811661); hematopoietically expressed homeobox (HHEX; rs 1111875); transcription factor-7-like 2 (TCF7L2; rs 10885409); potassium inwardly rectifying channel subfamily J member 11(KCNJ11; rs 5219); and fat mass obesity-associated gene (FTO; rs 9939609)]. Methods We genotyped these SNPs in a case-control sample of 918 individuals consisting of 532 T2D cases and 386 normal glucose tolerant (NGT) subjects of an Asian Sikh community from North India. We tested the association between T2D and each SNP using unconditional logistic regression before and after adjusting for age, gender, and other covariates. We also examined the impact of these variants on body mass index (BMI), waist to hip ratio (WHR), fasting insulin, and glucose and lipid levels using multiple linear regression analysis. Results Four of the nine SNPs revealed a significant association with T2D; PPARG2 (Pro12Ala) [odds ratio (OR) 0.12; 95% confidence interval (CI) (0.03–0.52); p = 0.005], IGF2BP2 [OR 1.37; 95% CI (1.04–1.82); p = 0.027], TCF7L2 [OR 1.64; 95% CI (1.20–2.24); p = 0.001] and FTO [OR 1.46; 95% CI (1.11–1.93); p = 0.007] after adjusting for age, sex and BMI. Multiple linear regression analysis revealed significant association of two of nine investigated loci with diabetes-related quantitative traits. The 'C' (risk) allele of CDK5 (rs 7754840) was significantly associated with decreased HDL-cholesterol levels in both NGT (p = 0.005) and combined (NGT and T2D) (0.005) groups. The less common 'C' (risk) allele of TCF7L2 (rs 10885409) was associated with increased LDL-cholesterol (p = 0.010) in NGT and total and LDL-cholesterol levels (p = 0.008; p = 0.003, respectively) in combined cohort. Conclusion To our knowledge, this is first study reporting the role of some recently emerged loci with T2D in a high risk population of Asian Indian origin. Further investigations are warranted to understand the pathway-based functional implications of these important loci in T2D pathophysiology in different ethnicities.
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Affiliation(s)
- Dharambir K Sanghera
- Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
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Jääskeläinen J, Korhonen S, Kuulasmaa T, Kurl S, Niskanen L, Vanhala M, Hippeläinen M, Voutilainen R, Heinonen S. Androgen receptor gene CAG repeat length in women with metabolic syndrome. Gynecol Endocrinol 2008; 24:411-6. [PMID: 18645714 DOI: 10.1080/09513590802210865] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
OBJECTIVE The length of the androgen receptor gene CAG repeat [AR (CAG)(n)] modulates the activity of the androgen receptor (AR), and this polymorphism has been shown to modulate body fat mass and serum concentrations of insulin in men. We hypothesized that shorter AR (CAG)(n) is associated with metabolic syndrome (MBS) or its components in women. DESIGN, PATIENTS AND MEASUREMENTS In a cross-sectional controlled study we studied 52 Finnish women aged 34-55 years with MBS and 69 age-matched controls. All participants were recruited from a sample of women drawn from the Finnish population register. We compared the mean AR (CAG)(n) in the two groups. Furthermore, we correlated the AR (CAG)(n) with serum testosterone, androstenedione, dehydroepiandrosterone sulfate and several parameters of glucose and lipid metabolism in each group and in all 121 women. RESULTS There was no difference in the biallelic mean AR (CAG)(n) between the MBS and the control group (21.6+/-0.2 vs. 21.8+/-0.2, not significant). The AR (CAG)(n) did not correlate significantly with any of the clinical or biochemical parameters of glucose or fat metabolism. However, it correlated negatively with serum testosterone (-0.195, p = 0.04) and androstenedione concentrations (-0.205, p = 0.03) in all studied women. CONCLUSIONS The AR (CAG)(n) is not a major determinant of MBS in women but it contributes to ovarian androgen production.
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Affiliation(s)
- Jarmo Jääskeläinen
- Department of Pediatrics, University of Kuopio and Kuopio University Hospital, Kuopio, Finland
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Mattevi VS, Zembrzuski VM, Hutz MH. Effects of a PPARG gene variant on obesity characteristics in Brazil. ACTA ACUST UNITED AC 2008; 40:927-32. [PMID: 17653445 DOI: 10.1590/s0100-879x2006005000114] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2006] [Accepted: 03/28/2007] [Indexed: 11/21/2022]
Abstract
The contribution of genetic factors to the development of obesity has been widely recognized, but the identity of the genes involved has not yet been fully clarified. Variation in genes involved in adipocyte differentiation and energy metabolism is expected to have a role in the etiology of obesity. We assessed the potential association of a polymorphism in one candidate gene, peroxisome proliferator-activated receptor-gamma (PPARGgamma), involved in these pathways and obesity-related phenotypes in 335 Brazilians of European descent. All individuals included in the sample were adults. Pregnant women, as well as those individuals with secondary hyperlipidemia due to renal, liver or thyroid disease, and diabetes, were not invited to participate in the study; all other individuals were included. The gene variant PPARG Pro12Ala was studied by a PCR-based method and the association between this genetic polymorphism and obesity-related phenotypes was evaluated by analysis of covariance. Variant allele frequency was PPARG Ala12 = 0.09 which is in the same range as described for European and European-derived populations. No statistically significant differences were observed for mean total cholesterol, LDL cholesterol, HDL cholesterol, or triglyceride levels among PPARG genotypes in either gender. In the male sample, an association between the PPARG Pro12Ala variant and body mass index was detected, with male carriers of the Ala variant presenting a higher mean body mass index than wild-type homozygotes (28.3 vs 26.2 kg/m2, P = 0.037). No effect of this polymorphism was detected in women. This finding suggests that the PPARG gene has a gender-specific effect and contributes to the susceptibility to obesity in this population.
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Affiliation(s)
- V S Mattevi
- Departamento de Ciências Fisiológicas, Fundação Faculdade Federal de Ciências Médicas de Porto Alegre, Porto Alegre, RS, Brasil
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Black MH, Fingerlin TE, Allayee H, Zhang W, Xiang AH, Trigo E, Hartiala J, Lehtinen AB, Haffner SM, Bergman RN, McEachin RC, Kjos SL, Lawrence JM, Buchanan TA, Watanabe RM. Evidence of interaction between PPARG2 and HNF4A contributing to variation in insulin sensitivity in Mexican Americans. Diabetes 2008; 57:1048-56. [PMID: 18162503 PMCID: PMC4447520 DOI: 10.2337/db07-0848] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE We hypothesized that interaction between PPARG2 Pro12Ala and variants in the promoter region of HNF4A are associated with type 2 diabetes-related quantitative traits in Mexican-American families of a proband with previous gestational diabetes. RESEARCH DESIGN AND METHODS The BetaGene project genotyped PPARG2 Pro12Ala and nine HNF4A single nucleotide polymorphisms (SNPs) in 473 individuals in 89 families. Members of the proband generation had fasting glucose <126 mg/dl and were phenotyped by oral and intravenous glucose tolerance tests. RESULTS Neither PPARG2 Pro12Ala nor any of the nine HNF4A SNPs were independently associated with type 2 diabetes-related quantitative traits. However, the interaction between PPARG2 Pro12Ala and HNF4A rs2144908 was significantly associated with both insulin sensitivity (S(I)) (Bonferroni P = 0.0006) and 2-h insulin (Bonferroni P = 0.039). Subjects with at least one PPARG2 Ala allele and homozygous for the HNF4A rs2144908 A allele had 40% higher S(I) compared with individuals with at least one G allele. S(I) did not vary by rs2144908 genotype among PPARG2 Pro/Pro. The interaction result for S(I) was replicated by the Insulin Resistance Atherosclerosis Family Study (P = 0.018) in their San Antonio sample (n = 484) where subjects with at least one PPARG2 Ala allele and homozygous for the HNF4A rs2144908 A allele had a 29% higher S(I) compared with individuals with at least one G allele. However, the interaction was not replicated in their San Luis Valley sample (n = 496; P = 0.401). CONCLUSIONS Together, these results suggest that variation in PPARG2 and HNF4A may interact to regulate insulin sensitivity in Mexican Americans at risk for type 2 diabetes.
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Affiliation(s)
- Mary Helen Black
- Department of Preventive Medicine, Division of Biostatistics, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Tasha E. Fingerlin
- Department of Preventive Medicine and Biometrics, University of Colorado at Denver and Health Sciences Center, Denver, Colorado
| | - Hooman Allayee
- Department of Preventive Medicine, Division of Biostatistics, Keck School of Medicine, University of Southern California, Los Angeles, California
- Institute for Genetic Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Weiming Zhang
- Department of Preventive Medicine and Biometrics, University of Colorado at Denver and Health Sciences Center, Denver, Colorado
| | - Anny H. Xiang
- Department of Preventive Medicine, Division of Biostatistics, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Enrique Trigo
- Department of Medicine, Division of Diabetes and Endocrinology, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Jaana Hartiala
- Department of Preventive Medicine, Division of Biostatistics, Keck School of Medicine, University of Southern California, Los Angeles, California
- Institute for Genetic Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Allison B. Lehtinen
- Department of Biochemistry and Center for Human Genomics, Wake Forest University School of Medicine, Winston-Salem, North Carolina
| | - Steven M. Haffner
- Department of Medicine, Division of Clinical Epidemiology, University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | - Richard N. Bergman
- Department of Physiology and Biophysics, Keck School of Medicine of University of Southern California, Los Angeles, California
| | - Richard C. McEachin
- Department of Psychiatry, University of Michigan Medical School, Ann Arbor, Michigan
| | - Siri L. Kjos
- Department of Obstetrics and Gynecology, Harbor-UCLA Medical Center, Los Angeles, California
| | - Jean M. Lawrence
- Research and Evaluation, Kaiser Permanente Southern California, Pasadena, California
| | - Thomas A. Buchanan
- Department of Medicine, Division of Diabetes and Endocrinology, Keck School of Medicine, University of Southern California, Los Angeles, California
- Department of Physiology and Biophysics, Keck School of Medicine of University of Southern California, Los Angeles, California
| | - Richard M. Watanabe
- Department of Preventive Medicine, Division of Biostatistics, Keck School of Medicine, University of Southern California, Los Angeles, California
- Department of Physiology and Biophysics, Keck School of Medicine of University of Southern California, Los Angeles, California
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Carey RM. Pathophysiology of Primary Hypertension. Microcirculation 2008. [DOI: 10.1016/b978-0-12-374530-9.00020-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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46
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Mohamed MBH, Mtiraoui N, Ezzidi I, Chaieb M, Mahjoub T, Almawi WY. Association of the peroxisome proliferator-activated receptor-gamma2 Pro12Ala but not the C1431T gene variants with lower body mass index in Type 2 diabetes. J Endocrinol Invest 2007; 30:937-43. [PMID: 18250615 DOI: 10.1007/bf03349241] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The peroxisome proliferator-activated receptor-gamma (PPARgamma) is a nuclear receptor involved in lipid metabolism, adipocyte differentiation and regulation of insulin sensitivity, and is associated with Type 2 diabetes (T2DM). The association of the C1431T silent mutation and the Pro12Ala missense transversion within the PPARgamma gene with the development of T2DM or obesity has often yielded contradictory results. We examined the association of the PPARgamma Pro12Ala and C1431T gene variants and their haplotypes with the susceptibility to T2DM. This was a retrospective study involving 491 T2DM patients and 400 age- and gender-matched controls. Pro12Ala and C1431T genotyping was done by PCR-RFLP analysis. Comparable frequencies of the mutant 12Ala (0.07 vs 0.08, p=0.216) and 1431T (0.12 vs 0.10, p=0.189) alleles, and Pro12Ala (p=0.218) and C1431T (p=0.421) genotypes were seen between patients and in nondiabetic control subjects. While no difference was noted in the distribution of Pro12Ala- C1431T haplotypes and genotypes between patients and controls, the PPARgamma 12Ala, but not 1431T, allele was significantly associated with lower body mass index (BMI) (< or =25.0) among patients. Regression analysis confirmed the association of the Pro12Ala (odds ratio =5.340; 95% confidence interval =1.044-27.311) with normal (BMI<25.0) but not with overweight/obesity among T2DM patients. Despite its association with lower BMI among T2DM patients, the PPARgamma gene does not appear to markedly influence Type 2 diabetes among Tunisian subjects.
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Affiliation(s)
- M Ben Hadj Mohamed
- Research Unit of Haematological and Autoimmune Diseases, Faculty of Pharmacy, Center University, Monastir, Tunisia
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47
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Kim K, Lee S, Valentine RJ. Association of pro12Ala polymorphism in the peroxisome proliferative-activated receptor gamma2 gene with obesity and hypertension in Korean women. J Nutr Sci Vitaminol (Tokyo) 2007; 53:239-46. [PMID: 17874829 DOI: 10.3177/jnsv.53.239] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
This study examined whether the Pro12Ala polymorphism of the PPARgamma2 gene is associated with obesity, hypertension and cardiovascular risk profiles in Korean adult women. We studied 129 Korean women (aged 42.71 +/- 8.56 y) who were divided into 2 groups as a Pro12Pro homozygous group and a Pro12Ala heterozygous or Ala12Ala homozygous group based upon PPARy2 genotype. Anthropometric parameters, blood pressure, abdominal fat area and blood lipid profiles were compared between the 2 groups, and the association of Ala allele frequency in PPARgamma2 gene with obesity or hypertension was evaluated. Most anthropometric parameters and blood lipid profiles did not differ significantly between the genotypes. However, all variables of skinfold thickness, body circumference and abdominal fat area of Pro12Ala heterozygous were consistently higher compared to the Pro12Pro homozygous subjects without a significance differences. The hypertensive group had significantly higher (p = 0.004) Ala12 allele frequency than the normotensive group whereas allele frequencies did not differ significantly between the obese group and non-obese group. Ala allele carriers had a significantly higher risk of hypertension than non-carriers in logistic regression analysis. There was no evidence that the Ala allele can be regarded as an independent risk factor for obesity. In conclusion, all variables related to obesity showed a consistently higher trend in Pro12Ala heterozygous subjects compared to Pro12Pro homozygous subjects. Pro12Ala heterozygous subjects showed an increasing trend of elevated blood pressure compared to Pro12Pro homozygous subjects. Ala12 variant as well as BMI and TG were regarded as independent risk factors for hypertension in our subjects.
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Affiliation(s)
- Kijin Kim
- Department of Physical Education, College of Physical Education, Keimyung University, 1000, Shindang-dong, Dalseo-gu, Daegu, 704-701, Korea.
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48
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Li LL, Ma XL, Ran JX, Sun XF, Xu LM, Ren J, Mao XM. Genetic polymorphism of peroxisome proliferator-activated receptor-gamma 2 Pro12Ala on ethnic susceptibility to diabetes in Uygur, Kazak and Han subjects. Clin Exp Pharmacol Physiol 2007; 35:187-91. [PMID: 17941898 DOI: 10.1111/j.1440-1681.2007.04796.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
1. The aim of the present study was to determine whether the peroxisome proliferator-activated receptor (PPAR)-g Pro12Ala polymorphism affects susceptibility to diabetes in Uygur, Kazak and Han subjects in Xinjiang, China. 2. Uygur, Kazak and Han subjects from Kashi, Yili and Shawan (Xinjiang, China) were enrolled in the present study. The PPAR-g Pro12Ala polymorphism was determined using restriction fragment length polymorphism. Anthropometric and serum biological indices were monitored among different genotype carriers to examine the PPAR-g Pro12Ala gene polymorphism and the prevalence of type 2 diabetes. 3. The distribution frequency of the Pro12Ala genotype did not differ between diabetic and non-diabetic Uygur, Kazak and Han subjects. However, the frequency of the A allele of Pro12Ala was significant different among non-diabetics, with frequencies of 11, 9 and 5% in Uygur, Kazak and Han groups, respectively. Using the c(2) test, it was shown that the frequency of the A allele in Uygurs (11%) was significantly higher than that in Han subjects (5%). To compare the wild-type (Pro/Pro) carriers in diabetics from each ethnic group, Ugyur subjects, who carry PPAR-g Pro12Ala (Pro/Ala), had a larger waist circumference and lower low-density lipoprotein-cholesterol level, Kazaks subjects showed larger waist circumference and higher high-density lipoprotein levels and Han subjects exhibited a high waist-to-hip ratio and body mass index. 4. The present study revealed that the allele and genotype frequency did not differ in diabetics and non-diabetics of each ethnic group. However, the frequency of the A allele was significantly different in non-diabetics from various ethnic groups. These data suggest that PPAR-g Pro12Ala may affect blood lipid levels and the abdominal fat storage of diabetic Ugyurs and Kazaks and may be associated with fat storage and insulin resistance in Hans.
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Affiliation(s)
- Lin-Lin Li
- Department of Pharmacology, Xinjiang Medical University, Urumuqi, China
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49
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Robitaille J, Pérusse L, Bouchard C, Vohl MC. Genes, fat intake, and cardiovascular disease risk factors in the Quebec Family Study. Obesity (Silver Spring) 2007; 15:2336-47. [PMID: 17890503 DOI: 10.1038/oby.2007.277] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVE The aim of this study was to assess gene-diet interaction effects on cardiovascular disease (CVD) risk factors (waist circumference, plasma triacylglycerol, high-density lipoprotein-cholesterol and fasting glucose concentrations, and diastolic and systolic blood pressure) in the Quebec Family Study cohort. DESIGN Sixty-four polymorphisms from 45 candidate genes were studied in 645 subjects. Dietary fat intake was obtained from a 3-day weighted food record. RESULTS We observed 18 significant interactions at a p value <or= 0.01. Among them, the Pro12Ala polymorphism in peroxisome proliferator-activated receptor gamma, alone or in interaction with fat intake, significantly modulated waist circumference (p = 0.0005 for both effects). Additionally, the apolipoprotein E genotype in interaction with fat intake was significantly associated with diastolic and systolic blood pressure (p = 0.01 and p = 0.001, respectively). The ghrelin Leu72Met polymorphism also interacted with dietary fat in its relation to waist circumference and triacylglycerol concentrations (p = 0.0004 and p = 0.005). DISCUSSION These results suggest that several alleles at candidate genes interact with dietary fat intake to modulate well-known CVD risk factors. The identification of gene-diet interaction effects is likely to provide useful information concerning the etiology of CVD.
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Affiliation(s)
- Julie Robitaille
- Lipid Research Center, CHUQ-CHUL, 2705 Laurier Boulevard, TR-93, Ste-Foy, Quebec, Canada G1V 4G2
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50
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Ahmed W, Ziouzenkova O, Brown J, Devchand P, Francis S, Kadakia M, Kanda T, Orasanu G, Sharlach M, Zandbergen F, Plutzky J. PPARs and their metabolic modulation: new mechanisms for transcriptional regulation? J Intern Med 2007; 262:184-98. [PMID: 17645586 DOI: 10.1111/j.1365-2796.2007.01825.x] [Citation(s) in RCA: 107] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Peroxisome proliferator-activated receptors (PPARs) as ligand-activated nuclear receptors involved in the transcriptional regulation of lipid metabolism, energy balance, inflammation, and atherosclerosis are at the intersection of key pathways involved in the pathogenesis of diabetes and cardiovascular disease. Synthetic PPAR agonists like fibrates (PPAR-alpha) and thiazolidinediones (PPAR-gamma) are in therapeutic use to treat dyslipidaemia and diabetes. Despite strong encouraging in vitro, animal model, and human surrogate marker studies with these agents, recent prospective clinical cardiovascular trials have yielded mixed results, perhaps explained by concomitant drug use, study design, or a lack of efficacy of these agents on cardiovascular disease (independent of their current metabolic indications). The use of PPAR agents has also been limited by untoward effects. An alternative strategy to PPAR therapeutics is better understanding PPAR biology, the nature of natural PPAR agonists, and how these molecules are generated. Such insight might also provide valuable information about pathways that protect against the metabolic problems for which PPAR agents are currently indicated. This approach underscores the important distinction between the effects of synthetic PPAR agonists and the unequivocal biologic role of PPARs as key transcriptional regulators of metabolic and inflammatory pathways relevant to diabetes and atherosclerosis.
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Affiliation(s)
- W Ahmed
- Cardiovascular Division, Harvard Medical School, Brigham and Women's Hospital, Boston, MA, USA
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