The effects of tiadenol, clofibrate and clofibride on bile composition in the rat.

Biliary secretion was studied in normolipidemic rats after a 7 day treatment with the hypolipidemic drugs, tiadenol (bis-(hydroxyethylthio)-1,10-decane), clofibrate and clofibride (chloro-4-phenoxy-2-methyl-2-propionate of dimethylcarbamoyl-3-propyl). All three drugs decreased blood cholesterol and total lipids, increased liver weight and liver catalase content, and decreased biliary excretion of cholesterol. The biliary concentrations of bile salts, phospholipids and cholesterol decreased to a variable extent, in such a way that the ratio of bile salts + phospholipids to cholesterol was increased by the drugs. The bile salt independent fraction was increased. The effects were qualitatively similar for all three drugs tested, but quanitative differences appeared for some of the parameters.