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Original Article Genetic Polymorphism of Glucagon-Like Peptide 1 Receptor in Korean Type 2 Diabetes Mellitus.
Kyung Wook Lee, Meihua Jiang, Shanji Piao, Eun A Kim, Seong Bin Hong, Moon Suk Nam, Yong Seong Kim, Kyong Soo Park, Hyun Chul Lee
Diabetes & Metabolism Journal 2005;29(1):30-38
DOI: https://doi.org/
Published online: January 1, 2005
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1Department of Internal Medicine, College of Medicine, The Graduate School, Inha University, Incheon, Korea.
2Department of Internal Medicine, Seoul National University School of Medicine, Korea.
3Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
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BACKGROUND
Glucagon-like peptide-1 (GLP-1) is a hormone secreted by intestinal L-cells, which stimulates insulin secretion from cells. The biological action of GLP-1 is mediated by the glucagon-like peptide-1 receptor (GLP-1R), which is 463 amino acids in size, with 7 transmembrane domains. Because GLP-1 plays an important modulatory role in regulating glucose-stimulated insulin, the GLP-1R could be a candidate gene contributing to impaired -cell function and the development of this genetically heterogeneous disorder. Recently, four GLP-1R SNPs were identified in Caucasian diabetic individuals, and for the SNP at the Leu- 260Phe (A/C) position, statistically significant differences were detected in the distribution of genotypes between type 2 diabetic and nondiabetic subjects. We replicated the genetic association between the SNP at the leu260Phe (A/C) position in the GLP-1R gene and Korean type 2 diabetes mellitus. METHODS: The Leu260Phe polymorphism in the GLP-1R gene was determined using a PCR- RFLP method (the genotypes were determined according to the results of polymerase chain reaction products after digestion and the digestive enzyme was BbsI) in 419 Korean type 2 diabetic patients and 345 nondiabetic subjects. RESULTS: In contrast to the Caucasian report, there was no significant difference in the frequencies of alleles, and genotypes between Korean type 2 diabetic and nondiabetic subjects. When analyzed according to gender, BMI and age of onset, the genotype distribution of type 2 diabetic subjects was not significantly different from nondiabetic subjects. CONCLUSION: The Leu260Phe polymorphism in the GLP-1R gene was not associated with type 2 diabetes mellitus, and we were unable to replicate the genetic association between this polymorphism and Korean type 2 diabetes mellitus

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    Genetic Polymorphism of Glucagon-Like Peptide 1 Receptor in Korean Type 2 Diabetes Mellitus.
    Korean Diabetes J. 2005;29(1):30-38.   Published online January 1, 2005
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Lee KW, Jiang M, Piao S, Kim EA, Hong SB, Nam MS, Kim YS, Park KS, Lee HC. Genetic Polymorphism of Glucagon-Like Peptide 1 Receptor in Korean Type 2 Diabetes Mellitus.. Diabetes Metab J. 2005;29(1):30-38.
DOI: https://doi.org/.

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