Gene polymorphism of insulin receptor substrate-1 in Northern Chinese Han pedigrees with type 2 diabetes mellitus / 中国病理生理杂志

ABSTRACT

AIM: To investigate the role of gene poly mo rphisms of insulin receptor substrate-1 (IRS-1) in northern Chinese Han pedigree s with type 2 diabetes mellitus (DM). METHODS: Polymorphisms in codon 804 and 971 of IRS-1 gene in 80 unrelated patients with type 2 DM and 80 control subjects were analyzed by polym erase chain reaction-sequence specific primer(PCR-SSP) technique followed by pol yacrylamide gel electrophoresis and silver staining. RESULTS: The frequencies (GCA→GCG) in codon 804 of IRS-1 gene w ere significantly higher in type 2 DM than normal subjects(0.200 vs 0.062, P