钙蛋白酶10基因多态性与高血压家族史及血糖水平的关联

目的　分析高血压家系和非高血压家系后代 ,钙蛋白酶 10 (CAPN 10 )基因多态性与高血压家族史、血糖水平的关联。方法　测定大庆地区 187个高血压家系和 191个非高血压家系第二代直系亲属的空腹血糖、胰岛素、甘油三酯和纤维蛋白原 ,用聚合酶链反应 (PCR)单链构型多态法(SSCP) ,DNA测序分析CAPN 10基因多态性。结果　 (1)高血压及非高血压家系的第二代直系亲属中CAPN 10基因UCSNP 4 3G/G型频率分别为 86 6 %、75 4 % (P <0 0 5 ) ;该基因型携带者在有高血压家族史有高血压人群明显多于无高血压家族史非高血压人群 (OR为 2 84 ,P =0 0 1)。 (2 )多因素分析 ,排除年龄、性别和体重指数影响后 ,空腹血糖最高四分变量组 (5 4 2± 0 1)mmol/L比最低四分变量组(4 0 9± 0 3)mmol/L携带该基因型明显增多 (OR值为 3 32 )。结论　CAPN 10基因UCSNP 4 3可能是大庆地区原发性高血压和糖尿病的遗传因素之一 ,其中G/G型对于预测高血压患者后代是否发生 2型糖尿病有一定作用

Relationship between calpain-10 gene polymorphism,hypertension and plasma glucose

OBJECTIVE: To detect the association among calpain-10(CAPN-10) gene polymorphism, hypentension and hyperglycemia. METHODS: 378 individuals in the present study were the second generation offsprings of 187 hypentensives and 19 1 nonhypertensives. Fasting plasma glucose (FPG), insulin, triglyceride and fibrinogen were determined. The polymorphism of UCSNP-43 and UCSNP-44 of CAPN 10 gene were analysed with PCR-SSCP method. RESULTS: (1)The frequency of G/G geno type of UCSNP-43 was higher in the second generation offsprings of the hypertensives than that in the nonhypertensive controls(86.6%, 75.4%, P < 0.05). (2) The frequenncy of G/G genotype of UCSNP-43 was higher in the hypertensive parents of the second generation offsprings in the hypertensive groups than that in the normotensive parent of the second generation offsprings of the nonhypertensive control groups (OR = 2.84, P = 0.01). After adjustment of age, sex and body mass index (BMI), the frequency of G/G genotype in the highest FPG-quartiles (FPG 5.42 +/- 0.1mmol/L) was much more than that in the lowest FPG quartiles (FPG 4.09 +/- 0.3 mmol/L) with OR of 3.32. CONCLUSIONS: Polymorphism of UCSNP-43 in CAPN-10 gene might be one of the genetic factors contributing to hypertension and diabetes mellitus in the population in Daqing city. It may be a predictor of type 2 diabetes mellitus (T2DM) in the decendents of hypertensives.