conclusions it can be concluded that tempol can improve dyslipidemia and may decrease hyperglycemia in diabetes. it seems that antioxidants such as tempol can improve dyslipidemia and may decrease hyperglycemia in diabetes. results the blood glucose level increased following diabetes induction. the level of blood glucose in the diabetic receiving tempol group decreased compared to the control d...

Very low density lipoproteins (VLDL), Sf60 to 400, from normolipemic individuals do not suppress 3-hydroxy-3-methylglutaryl-CoA reductase activity in cultured normal human fibroblasts at concentrations 20fold higher than those of low density lipoproteins (LDL) that give total suppression. To determine if these VLDL contain all of the structural elements necessary for receptor-mediated suppressi...

The effects of clofibrate administration were studied in rats made hyperlipidemic by the feeding of diets high in sucrose. Within 12 hr of administration of clofibrate, there was a marked decrease in the concentration of serum high density lipoproteins but no change in the concentrations of the low and very low density lipoproteins. Between 2-4 days of treatment, the concentration of the very l...

The low density lipoprotein receptor-related protein (LRP) is a cell surface receptor that binds and internalizes several macromolecules including apolipoprotein E-enriched remnant lipoproteins and protease/antiprotease complexes such as activated alpha 2-macroglobulin. Its function has been studied primarily in cultured fibroblasts and in liver. In the current studies, we provide evidence that...

Seven imperfect repeats of a 40-amino acid cysteine-rich sequence constitute the ligand binding domain of the low density lipoprotein (LDL) receptor. To assess the contribution of each repeat, three site-directed mutations were made individually in each repeat: 1) deletion of the repeat, 2) substitution of a conserved isoleucine with aspartic acid, and 3) substitution of a conserved aspartic ac...

OBJECTIVE The present study addresses the presence of distinct metabolic phenotypes in familial combined hyperlipidemia (FCHL) in relation to small dense low-density lipoprotein (sd LDL) and very low-density lipoprotein (VLDL) subclasses. METHODS AND RESULTS Hyperlipidemic FCHL relatives (n=72) were analyzed for LDL size by gradient gel electrophoresis. Pattern B LDL (sd LDL, particle size <2...

The low density lipoprotein receptor-related protein (LRP) from rat liver membranes binds apoprotein E (apoE)-enriched rabbit beta-migrating very low density lipoproteins (beta-VLDL) in a ligand blotting assay on nitrocellulose membranes. Binding was markedly activated when the beta-VLDL was preincubated with recombinant human apoE-3, native human apoE-3 or E-4, or native rabbit apoE. Human apo...

The molecular mechanisms of hypertriglyceridemia (HTG), a common lipid metabolic disorder in humans, often of genetic origin, are not well understood. In studying the effect of apolipoprotein (apo) E on the metabolism of triglyceride-rich lipoproteins, we found that expressing high plasma levels of human apoE3 in transgenic mice lacking endogenous mouse apoE caused HTG. These transgenic animals...