屏氧酶1与ATP结合盒转运子A1基因多态性的相互作用对血脂的影响

目的探讨屏氧酶1(paranoxonase 1, PON1)基因多态性与ATP结合盒转运子A1基因(ATP-binding cassette transporter 1, ABCA1)多态性对血脂水平的相互作用.方法 1019例受试者,其中680例脑卒中患者及339名正常对照组人群.采用聚合酶链反应-限制性片段长度多态性方法测定 PON1 A/B192和 ABCA1 R219K基因多态性.结果 PON1 A/B192各基因型之间血脂水平差异无统计学意义(P>0.05).在 ABCA1的RR、RK和KK 3种基因型中,HDL-C水平依次明显上升(P<0.05);TG水平依次呈下降趋势,相互之间差异无统计学意义.PON1基因型影响 ABCA1基因型与血脂的关系,AA型/RR型和BB型/KK型的HDL-C[(1.41±0.40)mmol/L,(1.41±0.39)mmol/L]高于BB型/RR型[(1.28±0.36)mmol/L],差异有统计学意义(P<0.05).结论 PON1基因型与ABCA1基因型的相互作用影响血脂水平.

Effect of the interaction between paranoxonase 1 and ATP-binding cassette transporter 1 gene polymorphism on serum lipid level

OBJECTIVE: To investigate the effect of interaction between paranoxonase 1 (PON1)gene polymorphism and ATP-binding cassette transporter 1 (ABCA1) genetic variation on serum lipid level. METHODS: Polymerase chain reaction-restricted fragments length polymorphism was used to determine PON1 A/B192 and ABCA1R219K genotype of 1019 subjects, including 680 patients with strokes and 339 healthy individuals as controls. RESULTS: No significant association between A/B192 genotype and any of the lipid measurements was detected. The levels of HDL-C in the subjects with RR, RK and KK genotypes showed a significant upward tendency respectively (P < 0.05); the levels of their triglyceride (TG) tended downward respectively, but there were no significant differences between them. The relationship between R219K genotype and serum lipid level was modified by A/B192 genotype. The levels of HDL-C in the subjects with AA/RR genotype and BB/KK genotype [(1.41 +/- 0.40) mmol/L, (1.41 +/- 0.39) mmol/L] were significantly different from that in the subjects with BB/RR genotype [(1.28 +/- 0.36) mmol/L] (P < 0.05). CONCLUSION: The result exhibited an interaction of PON1 A/B192 and ABCA1 R219K on serum lipid level.