PC-1基因多态性与2型糖尿病及胰岛素抵抗的相关性

目的 探讨浆细胞膜精蛋白PC-1基因多态性与胰岛素抵抗（IR）特征和2型糖尿病（DM）的关系。方法 运用聚合酶链反应．限制性片段长度多态性（PCR-RFLP）技术对深圳市133例2型DM患者和108例非DM对照人群的PC-1基因第四外显子K121Q多态性进行分析，并对2型DM组不同基因型间临床及生化指标进行比较。结果 2型DM组与非DM对照组比较，PC-1基因型频率和等位基因频率分布差别均无统计学意义；2型DM组携带Q等位基因者空腹血糖、甘油三酯及空腹血C肽水平显著高于携带K等位基因者。结论 Pc-1基因K121Q多态性与2型DM患者IR表型相关，但与2型DM的发生无明显关联。

Correlation of Membrane Glycoprotein PC-1 Gene Polymorphism with Type 2 Diabetes Mellitus and Insulin Resistance

Objective To explore the relationship of the K121Q polymorphism of membrane glycoprotein PC-1 gene with the features of insulin resistance(IR) and type 2 diabetes mellitus(T2DM).Methods The K121Q polymorphism in exon 4 of PC-1 gene were determined with the technique of polymerase chain reaction-restriction fragment length polymorphism(PCR-RFLP) in 133 patients with T2DM and 108 controls with normal glucose tolerance(NGT) in Shenzhen city.The clinical and laboratory data were also compared between type 2 diabetic patients with different genotypes.Results No statistically significant differences were observed in the genotype and allele frequencies between the control and the T2DM subjects.The concentrations of fasting plasma glucose(FPG),triglycerides(TG) and C-peptide were higher in T2DM patients with KQ genotype than with KK genotype(P<0.05).Conclusions The present study shows that the K121Q polymorphism of PC-1 gene is not associated with the occurrence of type 2 diabetes mellitus,but it is associated with phenotype of insulin resistance in type 2 diabetic patients.