apoB为LDL的主要载脂蛋白,它通过与特定的蛋白受体相互作用,调节进入细胞的胆固醇量。apoE在富含甘油三酯的蛋白代谢中颇为重要,但其调节甘油三酯分解代谢的准确机理尚待阐明。犬肝细胞体外试验表明,含apoE的和含apoB的脂蛋白相互竞争受体部位。作者通过检测含apoB和apoE apoB is the major apolipoprotein of LDL that regulates the amount of cholesterol that enters the cell through its interaction with specific protein receptors. ApoE is important in triglyceride-rich protein metabolism, but the exact mechanism by which triglyceride catabolism is regulated remains to be elucidated. In vitro studies in canine liver cells show that apoE-containing and apoB-containing lipoproteins compete with each other for receptor sites. The authors test for apoB and apoE