Effect of gemfibrozil on lipids, apoproteins, and postheparin lipolytic activities in normolipidemic subjects.
The lipid lowering agent Gemfibrozil was tested in 8 normolipidemic subjects during a three-month intake. Plasma triglycerides decreased by 41% and Very Low Density Lipoprotein (VLDL) triglycerides decreased by 54%. The reduction of plasma cholesterol, less marked (by 10%), was due to a decrease of Low Density Lipoprotein by 20% while High Density Lipoprotein (HDL) increased up to 30%. The separation of HDL demonstrated that only HDL3 were increased. The determination of the apoproteins in plasma and lipoprotein fractions showed similar results with a decrease of apo B (by 20%) and an increase of apo A-I and apo A-II, mainly in the HDL3 fraction. Plasma postheparin lipolytic activities (PHLA) were not influenced by the therapy and no correlation was found between these activities and any of the plasma or lipoprotein lipids. The apo C-III/apo C-II ratio in VLDL decreased by 30%; however, no correlation was found between this ratio in plasma as well as VLDL and triglycerides. In addition, the Intra Venous Fat Tolerance Test did not demonstrate any improvement of the clearance of exogenous fat. The lipid lowering efficacy of Gemfibrozil, its collateral effects, and the possible mechanisms of action are discussed.
Gnasso
A
A
Lehner
B
B
Haberbosch
W
W
Leiss
O
O
von Bergmann
K
K
Augustin
J
J
D000328:Adult; D001053:Apolipoproteins / Q000097:blood*; D002784:Cholesterol / Q000097:blood; D005217:Fat Emulsions, Intravenous; D015248:Gemfibrozil; D006493:Heparin / Q000494:pharmacology; D006801:Humans; D000960:Hypolipidemic Agents / Q000494:pharmacology*; D008055:Lipids / Q000097:blood*; D008066:Lipolysis / Q000187:drug effects*; D008075:Lipoproteins, HDL / Q000097:blood; D008079:Lipoproteins, VLDL / Q000097:blood; D008297:Male; D010421:Pentanoic Acids / Q000494:pharmacology*; D010743:Phospholipids / Q000097:blood; D014280:Triglycerides / Q000097:blood; D014631:Valerates / Q000494:pharmacology*
D001053:Apolipoproteins; D005217:Fat Emulsions, Intravenous; D000960:Hypolipidemic Agents; D008055:Lipids; D008075:Lipoproteins, HDL; D008079:Lipoproteins, VLDL; D010421:Pentanoic Acids; D010743:Phospholipids; D014280:Triglycerides; D014631:Valerates; D006493:Heparin; D002784:Cholesterol; D015248:Gemfibrozil