INCREASED POSTPRANDIAL LIPEMIA IN APO A-I(MILANO) CARRIERS

被引:22
作者
CALABRESI, L [1 ]
CASSINOTTI, M [1 ]
GIANFRANCESCHI, G [1 ]
SAFA, O [1 ]
MURAKAMI, T [1 ]
SIRTORI, CR [1 ]
FRANCESCHINI, G [1 ]
机构
[1] UNIV MILAN, INST PHARMACOL SCI, VIA BALZARETTI 9, I-20133 MILAN, ITALY
来源
ARTERIOSCLEROSIS AND THROMBOSIS | 1993年 / 13卷 / 04期
关键词
POSTPRANDIAL LIPEMIA; HDL; CHOLESTERYL ESTER TRANSFER PROTEIN; CHOLESTEROL ESTERIFICATION;
D O I
10.1161/01.ATV.13.4.521
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Plasma lipid/lipoprotein changes were monitored after a fat load (65 g fat per square meter body surface area) in six carriers of the apolipoprotein A-I(Milano) (A-I(M)) variant and six age- and sex-matched control subjects. The magnitude of postprandial lipemia, calculated as the area under the curve (AUC) described by plasma triglyceride (TG) level versus time, was threefold higher in the A-I(M) carriers; however, after correction for the different baseline TG levels, it was similar to control subjects. Moreover, the magnitude of postprandial lipemia was positively correlated with baseline TG in both A-I(M) carriers (r=0.77) and control subjects (r=0.80), indicating that fasting TGs are a major determinant of postprandial response in all subjects. Postprandial lipemia was also inversely correlated with high density lipoprotein (HDL) and HDL2 cholesterol in both groups (A-I(M), r=-0.81 and -0.79; control subjects, r=-0.87 and -0.94). Different from those in control subjects, the plasma apo A-I levels in the A-I(M) carriers decreased progressively while apo B increased up to 4 hours but decreased thereafter. Postprandial rises of low density lipoprotein TG but not of HDL-TG AUC were significantly higher in the A-I(M) carriers, even after normalization for the different fasting concentrations. These data show that the low plasma HDL levels of A-I(M) carriers, which are secondary to a primary structural alteration of the major HDL apolipoprotein, are associated with elevated fasting and postprandial TG levels and an anomalous postprandial redistribution of TG among lipoprotein classes.
引用
收藏
页码:521 / 528
页数:8
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