E-选择素A561C 基因多态性对高血压的影响

目的探讨E-选择素A561C基因多态性对高血压病的影响。方法高血压病组347例,对照组315例。两组年龄、体重指数差异无统计学意义。对两组进行血压测量,采血检测一氧化氮、内皮素、血管紧张素Ⅰ、血管紧张素Ⅱ及醛固酮。聚合酶链反应-限制性片段长度多态性方法进行DNA多态性分析,电泳判断基因型并测序。结果检测到AA、AC、CC三种基因型。在高血压病组与对照组之间基因型构成比差异有统计学意义（P 〈 0．05）。在高血压病组AC-CC基因型和C等位基因频率（6．92％和4．76％）显著高于对照组（分别为3．17％,2．22％）,P值分别为0．029和0．013。C等位基因发生高血压病的风险性是A等位基因的2．197倍（OR = 2．197,95％ CI为1．164～4．144）。AC-CC基因型平均动脉压与舒张压显著高于AA基因型（P值分别为0．024和0．049）;AC-CC基因型收缩压也有高于AA基因型的趋势,但差异无统计学意义。AC-CC基因型比AA型的空腹血糖、总胆固醇、低密度脂蛋白胆固醇更高（P = 0．031,0．046,0．003）,一氧化氮／内皮素比值更低（P = 0．036）。结论E-选择素A561C基因多态性对高血压病有显著影响,AC-CC基因型和C等位基因发生高血压病风险较大,收缩压与平均动脉压较高。

Effect of E-selectin A561C (S128R) polymorphism on blood pressure

OBJECTIVE: To investigate the effect of E-selectin A561C (S128R) polymorphism on blood pressure. METHODS: 347 essential hypertensive patients (male 163 and female 184, age 46.08 +/- 12.49 y, and body mass index 26.13 +/- 3.14 kg/m(2)) and 315 normal controls (male 93 and female 222, age 42.21 +/- 14.67 y, and body mass index 25.66 +/- 3.19 kg/m(2)) were genotyped by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Phenotypic measurements included blood pressure, blood glucose, serum triglycerides, serum total, high-density lipoprotein (HDL) and low-density lipoprotein (LDL) cholesterol, serum uric acid, blood urea nitrogen, nitric oxide, endothelin, angiotensin I, and II and plasma aldosterone. RESULTS: The frequencies of the AC and CC genotypes (6.92%) and C allele (4.76%) were significantly (P = 0.029 and 0.013) higher in hypertensive patients than normal controls (3.17% and 2.22%). The relative risk of hypertension associated with the C allele was 2.197 (95% CI: 1.164-4.144). Both diastolic blood pressure and mean arterial pressure were higher in C allele carriers than AA subjects (P = 0.049 and 0.024). Furthermore, C allele carriers, compared with AA subjects, had higher concentrations of blood glucose, and total and LDL cholesterol (P = 0.031, 0.046, and 0.003) and lower concentrations of nitric oxide (P = 0.036). CONCLUSION: The E-selectin A561C (S128R) polymorphism might affect blood pressure in Chinese.