title: Poloxalene 2930, a hydrophobic surfactant that prevents atherosclerosis, alters composition of rabbit lipoproteins.
abstract: Poloxalene 2930, a hydrophobic surfactant, was incorporated into an atherogenic diet at dose levels, 0.5% and 1% of the diet, and fed to rabbits for 10 weeks. Another group received plain atherogenic diet alone and a control group was fed chow. After this period, serum lipoproteins were separated by centrifugation and analyzed. The composition of lipoproteins from rabbits on atherogenic diet was abnormal. The cholesterol: triglyceride ratio of every lipoprotein fraction was significantly increased as was the cholesterol: protein ratio of very low density lipoproteins. Supplementing the diet with Poloxalene 2930 prevented these alterations. In all groups on the atherogenic diet the percentage of apolipoprotein E in VLDL and HDL increased. In the case of Poloxalene-treated rabbits this developed even though serum cholesterol levels were normal or slightly increased. It is concluded that Poloxalene 2930 has a systemic effect on lipoproteins which may contribute to its antiatherogenic action.
mesh_terms: D000818:Animals; D001055:Apolipoproteins B / Q000097:blood; D001057:Apolipoproteins E / Q000097:blood; D001161:Arteriosclerosis / Q000517:prevention & control*; D001798:Blood Proteins / Q000378:metabolism; D002784:Cholesterol / Q000097:blood; D008078:Cholesterol, LDL / Q000097:blood; D015243:Cholesterol, VLDL; D004036:Diet, Atherogenic; D008074:Lipoproteins / Q000097:blood*; D008079:Lipoproteins, VLDL / Q000097:blood; D008297:Male; D011060:Poloxalene / Q000494:pharmacology*; D011092:Polyethylene Glycols / Q000494:pharmacology*; D011817:Rabbits; D014280:Triglycerides / Q000097:blood
chemical_list: D001055:Apolipoproteins B; D001057:Apolipoproteins E; D001798:Blood Proteins; D008078:Cholesterol, LDL; D015243:Cholesterol, VLDL; D008074:Lipoproteins; D008079:Lipoproteins, VLDL; D014280:Triglycerides; D011092:Polyethylene Glycols; D011060:Poloxalene; D002784:Cholesterol