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  • Title: [Association of SNP276 in adiponectin gene with type 2 diabetes mellitus and insulin sensitivity].
    Author: Ru Y, Ma M, Ma T, Wang CJ, Wang YM, Zhang Q, Chen MW.
    Journal: Zhonghua Yi Xue Yi Chuan Xue Za Zhi; 2005 Dec; 22(6):698-701. PubMed ID: 16331577.
    Abstract:
    OBJECTIVE: To investigate the distribution of SNP276 in adiponectin gene in Chinese Hans and its impact on type 2 diabetes mellitus and insulin sensitivity. METHODS: The study population consisted of 417 Chinese Hans residents in Anhui province, including 141 subjects with normal glucose tolerance (NGT) and 276 with type 2 diabetes (T2DM). The islet beta-cell insulin secretion and tissue insulin sensitivity were assessed by formulae of homeostasis model assessment (HOMA-IR & HOMA beta). Firstly, polymerase chain reaction-single strand conformation polymorphism (PCR-SSCP) was used to determine whether variation exists in APM1. Then, exact variation was detected by automated DNA direct sequencing. RESULTS: The genotypes of APM1 SNP276 were 0.489 GG, 0.418 GT and 0.092 TT and the major allele was G (frequency=0.699) in subjects with NGT. The distributions of genotypes and alleles of SNP276 both displayed significant difference between NGT and T2DM groups (P=0.031 and 0.013). The SNP276 non-TT (TG+GG) genotype was associated with increased risk of T2DM (OR=2.447, 95%CI: 1.067-5.612, P=0.035). In T2DM group, the subjects with SNP276 GG or GT genotype had higher body mass index, body fat content, fasting plasma glucose and HOMA-IR than did those with TT genotype (P < 0.05 or P < 0.01). Besides, GG genotype had higher systolic blood pressure (P=0.021). In NGT group, SNP276 non-TT carrier had increased body mass index, body fat content, waist hip ratio, fasting plasma insulin, oral glucose tolerance test 2 h plasma insulin and HOMA-IR when compared with TT genotype (P < 0.05 or 0.01). CONCLUSION: SNP276 in APM1 was associated with T2DM and insulin sensitivity.
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