血清载脂蛋白CⅡ含量对HDL亚类分布的影响

目的:探讨血清载脂蛋白CⅡ含量对HDL亚类分布的影响。方法:采用双向电泳-免疫印迹方法检测247例受试者血清HDL亚类组成及含量。结果:随血清apoCⅡ水平的逐渐升高,年龄、BMI、TG、TC、apoB100、apoCⅡ、apoCⅢ、apoE、preβ1-HDL、preβ2-HDL、HDL3b和HDL3a含量显著增加,HDL-C、HDL2a、HDL2b含量显著减少。随apoCⅡ和apoAⅠ水平的逐渐升高,preβ1-HDL的含量均呈增加趋势,但HDL2b的含量在同一apoCⅡ组随apoAⅠ水平的升高呈增加趋势,而在同一apoAⅠ组随apoCⅡ水平的增加呈减少趋势。随apoCⅡ/apoCⅢ比值的逐渐升高,preβ1-HDL的含量呈增加趋势,而HDL2b的含量呈减少趋势。相关分析发现,控制血清TG和TC浓度后,apoCⅡ与preβ1-HDL呈显著正相关(r=0.186,P0.01),与HDL2b呈显著负相关(r=-0.149,P0.05);apoAⅠ含量与所有HDL亚类呈显著正相关(r值在0.349-0.587之间,P0.01);此外,apoCⅢ与preβ1-HDL和preβ2-HDL呈显著正相关(r分别为0.184和0.178,P0.01);apoB100与HDL2a呈显著负相关(r=-0.102,P0.05);apoE与HDL3a呈显著正相关(r=0.040,P0.05)。结论:随血清apoCⅡ水平的逐渐升高,HDL亚类的颗粒呈减小趋势,提示HDL成熟代谢受阻;apoAⅠ的含量可以对抗apoCⅡ对HDL亚类分布的影响;apoCⅡ/apoCⅢ的比值亦可作为反映HDL亚类分布的指标之一。

Influences of apolipoprotein CII concentrations on high-density lipoprotein subclass distribution

AIM: To investigate the influence of serum apolipoprotein (apo) CII concentrations on the distribution of serum high-density lipoprotein (HDL) subclasses. METHODS: Serum HDL subclasses in 247 subjects were determined by two dimensional gel electrophoresis-immunodetection. RESULTS: With the increase in serum apolipoprotein CII levels, age, BMI, the contents of TG, TC, apoB100, apoCII, apoCIII, apoE, preβ_1-HDL, preβ_2-HDL, HDL_3b and HDL_3a increased significantly, but the contents of HDL-C, HDL_(2a) and HDL_(2b) decreased remarkably. The contents of preβ_1-HDL increased with the rise in apoCII and apoA I levels, whereas the content of HDL_(2b) increased with the rise in serum apoA I level in the same apoC II group, but decreased with the increase in serum apolipoprotein CII level in the same apoA I group. With the increase in the ratio of apoCII/ apoCIII, the content of preβ_1-HDL elevated, but the content of HDL_(2b) decreased. The correlation analysis illustrated that the apoCII level was positively correlated with preβ_1-HDL (r=0.186, P<0.01), but inversely correlated with HDL_(2b) (r=-0.149, P<0.05). The apoA I level was positively associated with all HDL subclasses (r in the range of 0.349-0.587, P<0.01). In addition, the apoCIII level was positively correlated with preβ_1-HDL (r=0.184, P<0.01) and preβ_2-HDL (r=0.178, P<0.01), while the apoE level was positively correlated with HDL_(3a) (r=0.040, P<0.05). The apoB100 level was inversely correlated with HDL_(2a) (r=-0.102, P<0.05). CONCLUSION: The particles of HDL show a general shift towards smaller size with the increase in apoCII levels, indicating that the maturation of HDL is abnormal. Whereas the contents of apoA I level correct the effect of apoCII on the distribution profile of HDL subclasses. The ratio of apoCII/apoCIII might also been taken as one of the indexes reflecting the distribution profile of serum HDL subclasses.