当前位置： SCI文献检索 > ATHEROSCLEROSIS期刊下所有文献 > Accumulation of cholesteryl esters and triglycerides in cultured macrophages incubated with plasma very low density lipoproteins from rats fed on casein or soybean protein diets containing moderate levels of cholesterol.

Accumulation of cholesteryl esters and triglycerides in cultured macrophages incubated with plasma very low density lipoproteins from rats fed on casein or soybean protein diets containing moderate levels of cholesterol.

Abstract：

:Even when administered at a comparatively low level, dietary cholesterol produces significant changes in the properties of plasma lipoproteins in rats, particularly the d less than or equal to 1.006 g/ml fraction (VLDL). The occurrence of these changes is promoted by dietary casein. To test the hypothesis that these dietary-induced perturbations might include properties influencing lipoprotein-cell interactions of relevance to atherogenesis, cultured mouse peritoneal macrophages were incubated with VLDL isolated from male rats fed on diets containing either 0, 0.25 or 0.5% cholesterol with casein or soybean protein, respectively, as the sole source of protein. No increase in cholesteryl ester content, and a comparatively small rise in triglyceride content, was observed in macrophages incubated with VLDL from rats fed on cholesterol-free diets. In contrast, a significant and apparently saturable cellular accumulation of cholesteryl esters as well as triglycerides was produced by VLDL from cholesterol-fed rats. The curves showing cellular lipid accumulation versus VLDL-protein (or VLDL-cholesterol) content in the cell medium indicated different cellular affinity for VLDL from casein-fed rats in comparison with VLDL from soybean protein-fed rats. The apoprotein composition of VLDL differed between groups of rats fed on different types of dietary protein with higher proportions of apo C's in the casein-fed rats. In addition, cholesterol feeding resulted in increased proportions of apo A-I and apo A-IV in the plasma VLDL fraction.

journal_name

Atherosclerosis

journal_title

Atherosclerosis

authors

Eklund A,Sjöblom L,Ostlund-Lindqvist AM

doi

10.1016/0021-9150(86)90058-4

subject

Has Abstract

pub_date

1986-11-01 00:00:00

pages

129-36

issue

2

eissn

0021-9150

issn

1879-1484

pii

0021-9150(86)90058-4

journal_volume

62

pub_type

杂志文章

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