检验医学 ›› 2020, Vol. 35 ›› Issue (2): 129-133.DOI: 10.3969/j.issn.1673-8640.2020.02.008

• 临床应用研究?论著 • 上一篇    下一篇

血清Lp-PLA2水平在急性缺血性脑卒中患者中的临床应用

陆怡德, 吴佳宁, 彭奕冰   

  1. 上海交通大学医学院附属瑞金医院检验科,上海 200025
  • 收稿日期:2019-01-20 出版日期:2020-02-29 发布日期:2020-03-22
  • 作者简介:null

    作者简介:陆怡德,男,1972年生,学士,主管技师,主要从事临床生化检验工作。

Clinical application of serum lipoprotein-associated phospholipase A2 level in patients with acute cerebral infarction

LU Yide, WU Jianing, PENG Yibing   

  1. Department of Clinical Laboratory,Ruijin Hospital,Shanghai Jiao Tong University School of Medicine,Shanghai 200025,China
  • Received:2019-01-20 Online:2020-02-29 Published:2020-03-22

摘要:

目的 探讨血清脂蛋白相关磷脂酶A2(Lp-PLA2)活性与急性缺血性脑卒中(ACI)患者脑动脉粥样硬化(CAS)病变部位、严重程度和复发风险的关系。方法 检测186例ACI患者的血清Lp-PLA2活性及总胆固醇(TC)、三酰甘油(TG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)、同型半胱氨酸(Hcy)及高敏C反应蛋白(hs-CRP)水平,同时收集相关病史资料,并行颈动脉彩超检查、计算机断层扫描血管造影(CTA)或增强磁共振血管成像(MRA)检查。根据影像学结果分别按血管病变部位、病变严重程度及斑块性质分组。采用Spearman相关分析评估各项目与CAS的相关性。结果 易损斑块组Lp-PLA2活性明显高于无斑块组和稳定斑块组(P<0.05),3组之间血清hs-CRP和Hcy水平差异均无统计学意义(P>0.05)。狭窄组及闭塞组血清Lp-PLA2活性高于无狭窄组(P<0.05)。闭塞组血清hs-CRP水平高于无狭窄组(P<0.05)。并发颅内外CAS性狭窄组血清hs-CRP水平及Lp-PLA2活性高于无CAS性狭窄组(P<0.05)。易复发组年龄、高血压比例、心脏病比例、糖尿病比例及血清hs-CRP水平明显高于不易复发组(P<0.05),而2个组之间男性所占比例及血清TC、TG、Lp-PLA2水平差异均无统计学意义(P>0.05)。Spearman相关分析结果显示,Lp-PLA2、TC、LDL-C、hs-CRP与CAS均呈正相关(r值分别为0.378、0.229、0.229、0.163,P<0.05)。ROC曲线分析显示,Lp-PLA2、TC、LDL-C及hs-CRP诊断ACI患者CAS的曲线下面积(AUC)分别为0.801、0.683、0.683和0.584,Lp-PLA2的最佳临界值为489.5 U/L。结论 血清Lp-PLA2活性与CAS严重程度密切相关,可作为反映ACI患者CAS病情严重程度的指标。

关键词: 脂蛋白相关磷脂酶A2, 脑动脉粥样硬化, 急性缺血性脑卒中

Abstract:

Objective To investigate the relationship between serum lipoprotein-associated phospholipase A2(Lp-PLA2) activity and the location,severity and recurrence risk of cerebral atherosclerosis(CAS) in patients with acute cerebral infraction(ACI). Methods A total of 186 ACI patients were enrolled. Serum Lp-PLA2 activity,total cholesterol(TC),triglyceride(TG),low-density lipoprotein cholesterol(LDL-C),high-density lipoprotein cholesterol(HDL-C),homocysteine(Hcy) and high-sensitivity C-reactive protein(hs-CRP) were determined. The location and severity of CAS were measured by computed tomography angiography(CTA) or magnetic resonance angiography(MRA) and carotid ultrasound. Spearman correlation analysis was used to evaluate the correlation of these parameters with CAS. Results Serum Lp-PLA2 activity of vulnerable plaque group was higher than those of stable plaque group and no plaque group (P<0.05),while hs-CRP and Hcy showed no statistical significance in the 3 groups (P>0.05). Serum Lp-PLA2 activities in stenosis group and occlusion group were higher than that in non-stenosis group (P<0.05). The occlusion group had higher hs-CRP than that in non-stenosis group (P<0.05). Serum hs-CRP and Lp-PLA2 activity in CAS stenosis group were higher than those in non-CAS stenosis group (P<0.05). Age,the proportions of hypertension,heart disease and diabetes,as well as hs-CRP level in relapse group were higher than those in non-relapse group (P<0.05). There was no statistical significance for the proportion of males,TC,TG or Lp-PLA2P>0.05). Spearman analysis showed that Lp-PLA2 activity,TC,LDL-C and hs-CRP had positive correlations with CAS(r=0.378,0.229,0.229 and 0.163,respectively,P<0.05). The areas under receiver operating characteristic(ROC) curves (AUC) of Lp-PLA2 activity,TC,LDL-C and hs-CRP to diagnose CAS were 0.801,0.683,0.683 and 0.584,respectively,and the optimal cut-off value was 489.5 U/L. Conclusions Serum Lp-PLA2 activity is related with CAS severity,and it can reflect the severity in ACI patients.

Key words: Lipoprotein-associated phospholipase A2, Cerebral atherosclerosis, Acute cerebral infraction

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