نتایج جستجو برای: lipoproteins vldl
تعداد نتایج: 39838 فیلتر نتایج به سال:
The feeding of cholesterol-rich diets alters the serum lipoproteins of a number of mammalian species. These lipoproteins are characterized by the presence of several classes of particles enriched in cholesteryl esters and apolipoprotein E (apo E). It was the aim of this study to determine whether one or more of these particles arises by de novo hepatic synthesis by characterizing nascent lipopr...
Rats fed a diet deficient in essential fatty acids have a low level of serum very low density lipoproteins (VLDL). It was found that after intraperitoneal injection of heparin, deficient rats had a higher level of lipoprotein lipase activity in their plasma than did normal rats. VLDL isolated from serum of normal and deficient rats were compared as substrates for postheparin lipase of rat plasm...
This study investigates the effect of altered lipoprotein free cholesterol (FC) content on the transfer of cholesteryl ester (CE) and triglyceride (TG) from very low- (VLDL), low- (LDL), and high-(HDL) density lipoproteins by the plasma-derived lipid transfer protein (LTP). The FC content of VLDL and HDL was selectively altered by incubating these lipoproteins with FC/phospholipid dispersions o...
The in vivo fate of /3-very low density lipoproteins (0-VLDLs) was investigated after Cu-mediated oxidative modification (Ox-0-VLDL). Ox-0-VLDL may be physiologically relevant under conditions of defective VLDL removal by the liver (type HI hyperlipoproteinemia) or overloading of the remnant receptor (high cholesterol feeding). On oxidation of /3 -VLDL, the kinetics of its removal from the bloo...
This study was designed to examine the integrated metabolism of apolipoprotein B (apo B) in very low density lipoproteins (VLDL), intermediate density lipoproteins (IDL), and low density lipoproteins (LDL) in normal subjects, obese patients, and a group of patients with coronary heart disease (CHD). Turnover rates of 131I-VLDL-B, 131I-IDL-B, 125I-LDL-B, and [3H]VLDL-triglycerides (TG) were dete...
The in vivo fate of beta-very low density lipoproteins (beta-VLDLs) was investigated after Cu(2+)-mediated oxidative modification (Ox-beta-VLDL). Ox-beta-VLDL may be physiologically relevant under conditions of defective VLDL removal by the liver (type III hyperlipoproteinemia) or overloading of the remnant receptor (high cholesterol feeding). On oxidation of beta-VLDL, the kinetics of its remo...
Rat and human very low density lipoproteins (VLDL) were fractionated by zonal ultracentrifugation, yielding sharply defined fractions with narrow sedimentation limits. Sedimentation coefficients for the individual fractions were determined at two densities with the analytical ultracentrifuge, and the results were analyzed to yield buoyant densities and molecular weights for the particles in eac...
Mildly oxidized LDL has many proinflammatory properties, including the stimulation of monocyte chemotaxis and adhesion, that are important in the development of atherosclerosis. Although ApoB-containing lipoproteins other than LDL may enter the artery wall and undergo oxidation, very little is known regarding their proinflammatory potential. LDL, IDL, VLDL, postprandial remnant particles, and c...
Cholesterol-fat feeding is associated with unusual alterations in the composition of plasma lipoproteins in alloxan-diabetic rabbits. In the present study plasma lipoprotein lipid and apoprotein composition was studied before and after 48 hr of fasting in cholesterol-fed diabetic and control rabbits in order to further characterize these alterations. Compared with control rabbits, the diabetic ...
Apolipoprotein B-100 is a constant component of very low density lipoproteins (VLDL), intermediate density lipoproteins (IDL), and low density lipoproteins (LDL) in mammalian blood plasma. We have found that each of these classes of lipoproteins includes particles that contain apolipoprotein E (B,E particles) as well as particles that lack this protein (B particles). These two species can be se...
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