摘要
目的探讨血清脂蛋白(a)[LP(a)]在评价冠状动脉粥样硬化性心脏病(CAHD)患者冠状动脉斑块性质的临床应用价值。方法采用病例对照研究,选取2013年10月至2015年6月在上海市东方医院进行冠状动脉CT血管造影(CTA)检查的患者790例,依冠状动脉CTA的结果分为CAHD组(352例)和正常对照组(438名),CAHD组据斑块性质不同分为软斑块176例、钙化斑块90例和混合斑块86例,检测LP(a)[颗粒数(P)和质量(M)]浓度、甘油三酯(TG)、总胆固醇(TC)、高密度脂蛋白胆固醇(HDL—C)、低密度脂蛋白胆固醇(LDL—C)、葡萄糖、糖化血红蛋白A1c(HBA1c)和超敏C反应蛋白(hs—CRP)等指标,并进行综合分析。各组均数比较采用t检验或方差分析;各指标对CAHD风险估计采用Logistie回归,LP(a)-P和LP(a)-M进行直线回归,一致性分析使用Kappa检验。结果CAHD组和对照组比较,LP(a)-P18.5(8.3—43.0)nmol/L与13.6(7.6~32.4)nmol/L(t=-2.110)和LP(a)-M183(71~361)mg/L与126(67~293)mg/L(t=-2.063)、年龄(62±9)岁与(52±9)岁(t=-7.691)、hs—CRP0.86(0.44~1.97)mg/L与0.70(0.38—1.64)mg/L(t=-2.236)、葡萄糖(6.10±2.29)mmol/L与(5.36±1.32)mmol/L(t=-4.914)、HBA1c(6.13±0.98)%与(5.81±0.58)%(t=-4.842)、APO(B)(1.09±0.33)g/L与(1.03±0.29)g/L(t=-2,407),CAHD组均明显高于对照组(P均〈0.05);年龄、葡萄糖、LP(a)-P和LP(a)-M对CAHD的相对危险度分为1.067、2.377、1.384和1.342。斑块性质组间比较。年龄、TC、HDL-12、LDL—c和LP(a)-P组均数差异有统计学意义(F分别是6.276,3.060,3.127,4.723,2.878;P均〈0.05);LP(a)-P在软斑块组中位数20.3(8.3—48.2)nmol/L高于混合斑块组15.7(7.3~26.0)nmol/L(P〈0.05)和钙化组15.6(8.1-23.1)nmol/L(P〈0.05)。LP(a)-M对LP(a)-P的直线回归方程为Y=6.646X,r=0.939;一致性检验认为两种方法对个体分组不一致(Kappa值为0.557)。结论血清LP(a)浓度升高是患CAHD的危险因素之一,LP(a)颗粒数浓度升高与冠状动脉斑块性质尤其是软斑块高度相关。
Objective To investigate the clinical value of serum lipoprotein (a) concentration in evaluation of plaques characteristics for patients with coronary atherosclerotic heart diseases (CAHD). Methods Using case-control method, Patients with suspicious CAHD, received coronary, computed tomography angiography in the Shanghai East Hospital during October 2013 to June 2015 were enrolled. According to the results of coronary artery CTA, the patients were divided into two groups : the CAHD group (352 cases) and control group(438 cases) , the particle concentrations and mass concentration of lipoprotein(a) , triglyceride, total cholesterol, HDL-C, LDL-C, glucose, HBAlc and hs-CRP and other tests were measured, the patients of CAHD group were divided into three subgroups by characteristics of coronar7 artery plaques including soft plaque (176 cases) , calcified plaque (90 cases ) and mixed plaque (86 cases), analysis were made with all these data. Using T test or variance analysis to compare the means between or among groups, the risk for CAHD was analyzed by logistic regression, the relationship between LP (a) -P and LP(a) -M were explored by linearly egression analysis, Conformance test were analyzed using kappa test. Results Compared with control group, the mean results of the CAHD group are significantly higher than that of control group, including LP (a) -P 18.5 (8.3 - 43.0) ) mnol/L vs. 13.6 (7.6-32.4)nmol/L( t = -2.110), LP(a)-M 183(71 -361)mg/L vs. 126(67-293)mg/L(t = -2. 063), age (62 ±9)years vs. (52 ±9)years(t = -7. 691), hs-CRP 0. 86(0. 44 - 1.97) )mg/L vs. 0.70 (0. 38 - 1.64) rag/L( t = - 2. 236) , glucose (6. 1 ± 2.29 ) mmol/L vs. (5.3± 1.32 ) mmol/L ( t = -4.914), BAIc (6.13±0.98) % vs. (5.81±0.58) %(t= -4.842), APO(B) (1.09±0.33) g/L vs. ( 1. 03 ±0. 29) g/L( t = -2. 407) , all of the P values 〈0. 05; The relative risk(RR)of age, glucose, LP( a)-P and LP(a)-M are 1.067, 2. 377, 1. 384 and 1. 342 respectively; Among the three types of plaques groups,the mean differences of age, TC, HDL-C, LDL-C and LP (a)-P are statistically significant ( F = 6. 276,3. 060,3. 127,4. 723,2. 878; all of the P 〈 0. 05) ; The median of LP (a) -P in the soft plaque group 20.3 ( 8.3 - 48.2) nmol/L is higher than that of the mixed plaque group 15.7 (7.3 - 26.0) nmoUL ( P 〈0. 05 ) and calcified plaque group 15.6 ( 8.1 - 23.1 ) nmol/L ( P 〈 0. 05 ). The linearly regression equation of LP (a) -M and LP(a)-P is Y = 6. 646X, r = 0. 939; Consistency test indicate the two methods are not consistent when used for grouping ( Kappa value is 0. 557 ). Conclusions Serum concentration of lipoprotein(a) is an independent risk factor of CAHD, and the particle concentration of LP(a) is closely related to the characteristics of the plaques, especially to the soft plaque.
出处
《中华检验医学杂志》
CAS
CSCD
北大核心
2016年第3期215-219,共5页
Chinese Journal of Laboratory Medicine