检验医学 ›› 2016, Vol. 31 ›› Issue (10): 869-873.DOI: 10.3969/j.issn.1673-8640.2016.010.007

• 临床应用研究·论著 • 上一篇    下一篇

Lp-PLA2活性水平及基因多态性与缺血性脑卒中的相关性

李苏亮, 叶芸   

  1. 西安医学院第一附属医院,陕西 西安 710077
  • 收稿日期:2016-01-26 出版日期:2016-10-20 发布日期:2016-11-01
  • 作者简介:null

    作者简介:李苏亮,男,1973年生,学士,副主任技师,主要从事临床免疫学检验工作。

    通讯作者:叶 芸,联系电话:029-84277552。

  • 基金资助:
    陕西省教育厅科研计划项目(11JK0723 );西安医学院第一附属医院科研项目(XYFY14-02)

Correlations of Lp-PLA2 activity and gene polymorphism with ischemic cerebral stroke

LI Suliang, YE Yun   

  1. The First Affiliated Hospital of Xi'an Medical University,Xi'an 710077,Shaanxi,China
  • Received:2016-01-26 Online:2016-10-20 Published:2016-11-01

摘要:

目的 研究脂蛋白相关磷脂酶A2(Lp-PLA2)活性水平及其基因位点rs1051931(Ala379Val)多态性与缺血性脑卒中(ICS)的相关性。方法 采用聚合酶链反应(PCR)及基因测序技术检测480例ICS患者和630名健康体检者(正常对照组)Lp-PLA2基因rs1051931位点多态性,同时测定血浆Lp-PLA2活性及血脂[包括总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)]、血糖(Glu)水平。结果 ICS组男性比例、患高血压比例、Lp-PLA2活性及TG、TC、HDL-C、LDL-C、Glu水平均明显高于正常对照组(P<0.05),而2个组之间年龄、体重指数(BMI)差异均无统计学意义(P>0.05)。ICS组具有更高水平的传统危险因素(高血压、相对较高的LDL-C水平及相对较低的HDL-C水平)。校正传统危险因素(高血压、高血糖、高血脂)后,Lp-PLA2活性的最高四分位数与最低四分位数相比,比值比(OR)[95%可信区间(CI)]为2.25(1.23~9.96)。CC、CT、TT基因型的Lp-PLA2活性[中位数(四分位数)]分别为56.44(27.56~87.84)、43.26(26.73~78.51)、38.24(22.98~62.84)nmol/(mL·min),3种基因型之间差异均有统计学意义(P<0.05)。以Lp-PLA2基因型为自变量进行Binary Logistic回归分析,结果显示ICS组CC基因型频率较高,OR值(95%CI)为1.707(1.055~2.761)。结论 ICS患者血浆Lp-PLA2活性高于健康人群。Lp-PLA2基因多态性与ICS的发病有关,CC基因型是ICS发病的危险因素。

关键词: 脂蛋白相关磷脂酶A2, 单核苷酸多态性, 缺血性脑卒中

Abstract:

Objective To investigate the correlations of lipoprotein-associated phospholipase A2(Lp-PLA2)activity and its gene locus rs1051931(Ala379Val) polymorphism with ischemic cerebral stroke(ICS). Methods Polymerase chain reaction(PCR) and direct sequencing assay were used to determine rs1051931 polymorphism in 480 patients with ICS and 630 healthy subjects(healthy control group). Plasma Lp-PLA2 activity,total cholesterol(TC),triglyceride(TG),high-density lipoprotein cholesterol(HDL-C),low-density lipoprotein cholesterol(LDL-C) and glucose(Glu) were determined simultaneously.Results The proportion of males,the proportion of hypertension,Lp-PLA2 activity,TG,TC,HDL-C,LDL-C and Glu in ICS group were higher than those in healthy control group(P<0.05). The differences of ages and body mass index(BMI) between the 2 groups were not statistically significant(P>0.05). ICS group had high levels of traditional vascular risk factors,including relatively-high blood pressure and LDL-C and relatively-low HDL-C. After the calibration of traditional vascular risk factors,the highest and lowest quartiles of Lp-PLA2 activity were analyzed {odds ratio(OR)[95% confidence interval(CI)] =2.25(1.23-9.96)}. Lp-PLA2 activities [median(quartile)] were 56.44(27.56-87.84)nmol/(mL·min) in genotype CC,43.26(26.73-78.51)nmol/(mL·min) in genotype CT and 38.24(22.98-62.84)nmol/(mL·min) in genotype TT(P<0.05). By Binary Logistic regression analysis,Lp-PLA2 genotype was used as an independent variable,the frequency of genotype CC in ICS group was high [OR(95%CI)=1.707(1.055-2.761)]. Conclusions Lp-PLA2 activity in ICS group is higher than that in healthy control group,and its polymorphism is correlated with ICS. Genotype CC is a risk factor for ICS.

Key words: Lipoprotein-associated phospholipase A2, Single nucleotide polymorphism, Ischemic cerebral stroke

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