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MMP-9基因多态性与老年动脉僵硬度的相关性研究 被引量:4

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摘要 目的探讨老年动脉僵硬度与基质金属蛋白酶-9(MMP-9)基因多态性的相关性。方法对437例老年人(年龄60~95岁)进行一般情况、实验室指标及臂-踝脉搏波传导速度(ba-PWV)的检测,并综合baPWV值及年龄-ba-PWV曲线,分为低baPWV组和高baPWV组。应用PCR-限制性片段长度多态性(RFLP)法确定基因型,分析比较两组MMP-9三种基因型的分布。结果高baPWV组TT基因型频率(16.4%)明显高于低baPWV组(8.8%),两组差异有显著统计学意义(χ2=6.470,P=0.008)。两组T等位基因分布有显著统计学意义(χ2=7.929,P=0.003)。MMP-9三种基因型中以C/C型作为比较基线,C/T型和T/T型的OR分别为1.227(95%CI:0.793~1.899)和2.170(95%CI:1.184~3.976)。以C等位基因作为比较基线,T等位基因的OR为1.550(95%CI:1.141~2.105)。经单因素非条件Logistic回归分析后进行多因素非条件Logistic回归分析,结果显示年龄、体重指数、收缩压、脉压、平均动脉压、吸烟、高密度脂蛋白(HDL)及MMP-9TT基因型为动脉僵硬度增加的危险因素。结论老年动脉僵硬度与MMP-9基因多态性密切相关,MMP-9基因1562T等位基因可能是老年动脉僵硬增高的遗传基因标记之一。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2010年第5期579-582,共4页 Chinese Journal of Gerontology
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参考文献12

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