清除法测定小而密低密度脂蛋白胆固醇的方法学评价及临床应用初探  被引量:3

Evaluation of small dense low-density lipoprotein cholesterol detection by the direct clearance method and its preliminary clinical application

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作  者:成士清[1] 鞠瑛[1] 栾芳[1] 徐艳秋[1] 鲁真真 卢志明[1] 张炳昌[1] 

机构地区:[1]山东大学附属省立医院检验医学部,济南250021

出  处:《中华检验医学杂志》2017年第4期253-259,共7页Chinese Journal of Laboratory Medicine

基  金:国家自然科学基金资助项目(81102220)

摘  要:目的对直接清除法检测小而密低密度脂蛋白胆固醇(sdLDL-C)的检测性能进行初步评价,并对其在急性冠脉综合征(ACS)中的临床应用进行评估。方法采用病例对照研究,验证并评估直接清除法检测sdLDL-C的精密度、准确度和线性范围。选择2016年4至10月在山东省立医院心内科和急诊内科住院ACS患者143例,男100例,女43例,包括急性心肌梗死(AMI)组59例,不稳定性心绞痛(UAP)组84例;选择山东省立医院健康查体中心健康对照者83名,其中男性59名,女性24名。采用全自动生化分析仪检测sdLDL-C与常规血脂项目总胆固醇(TCH)、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)、载脂蛋白ApoAⅠ、载脂蛋白ApoB、脂蛋白(a)(Lpa)以及超敏C-反应蛋白(Hs-CRP)的水平。非高密度脂蛋白胆固醇(non-HDL-C)用TCH与HDL-C的差值表示。统计学分析采用χ^2检验、t检验、ANOVA方差分析、Pearson线性相关和多元线性逐步回归分析。 结果直接清除法检测sdLDL-C的批内和批间变异系数为2.85%、3.36%;方法学比对:线性回归方程Y=0.984X+0.018,r^2=0.966,t=-0.191,P=0.850;sdLDL-C检测在0.15~2.65 mmol/L范围内呈线性,拟合方程Y=1.026X+0.007,r^2=0.999。sdLDL-C水平与TCH、non-HDL-C、LDL-C、TG、ApoB呈正相关(r分别为0.758、0.848、0.839、0.514、0.885,P均〈0.01),与HDL-C呈负相关(r=-0.224,P=0.001),与ApoA I、Lpa、Hs-CRP无相关性(r分别为-0.021、0.050、0.003,P均〉0.05)。多元线性逐步回归分析显示,对sdLDL-C水平有显著影响的因素为ApoB、LDL-C、TG和HDL-C。ACS组的sdLDL-C、TG水平明显高于健康对照组(t值分别为3.415、4.660,P均〈0.01),而两组的TCH、 non-HDL-C与LDL-C水平差异无统计学意义(t值分别为-1.831、-0.452、-1.3Objective To verify and valuate the performance of small dense low-density lipoprotein cholesterol (sdLDL-C) detection by the direct clearance method and evaluate its preliminary clinical application in acute coronary syndrome(ACS).MethodsCase control study: The performance (accuracy, precision, linearity) of sdLDL-C was assessed by direct clearance method.In 143 cases of ACS patients selected from Cardiology Department and Emergency Department of Shangdong Provincial Hospital from April to October in 2016, with 100 cases male, female 43 cases, including acute myocardial infarction (AMI) group of 59 cases, unstable angina pectoris (UAP) group of 84 cases; 83 cases of healthy volunteers as a control group selected from health physical examination center of Shandong Provincial Hospital, with 59 cases male, female 24 cases. Levels of sdLDL-C, total cholesterol (TCH), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), apolipoprotein A (ApoA I), apolipoprotein B (ApoB), lipoprotein (a) (Lpa) and high sensitive C-reactive protein (Hs-CRP) were detected separately by automatic biochemical analyzer. Non high density lipoprotein cholesterol (non-HDL-C) equals TCH minus HDL-C. χ^2 test, t test, one-way ANOVA, Pearson correlation and multiple linear regression analysis were used as statistical methods.ResultsThe within-lot or between-lot variation was 2.85% and 3.36%.Methodological comparison: regression equation Y=0.984X+ 0.018, r^2=0.966, t=-0.191, P=0.850. There was a good linear correlation(Y=1.026X+ 0.007, r^2=0.999) between theoretical values and actual detection results in range of 0.15-2.65 mmol/L. SdLDL-C concentrations were positive correlated with TCH, non-HDL, LDL-C, TG, ApoB(r=0.758, 0.848, 0.839, 0.514, 0.885, respectively, P〈0.01), and negative correlated with HDL-C (r=-0.224, P=0.001), but no correlation with APOA I, Lpa and Hs-CRP(r=-0.021, 0.050, 0.003, respectivel

关 键 词:急性冠状动脉综合征 胆固醇 LDL 脂类代谢 

分 类 号:R446.1[医药卫生—诊断学] R541.4[医药卫生—临床医学]

 

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