Journal of Lipid Research, Vol. 13, 71-77, January 1972
Copyright © 1972 by Lipid Research, Inc.
Bile acids. XXXV. Metabolism of 5
-cholestan-3ßbeta;-ol in the Mongolian gerbil
Burton W. Noll , Rev. Lawrence B. Walsh , C. M. , E. A. Doisy Jr. , and William H. Elliott
Department of Biochemistry, St. Louis University School of Medicine, St. Louis, Missouri 63104
The principal bile acid of Mongolian gerbil bile is cholic acid, although small amounts of chenodeoxycholic and lesser amounts of deoxycholic acids are identified. Muricholic acids were not found in gerbil bile. The ratio of trihydroxy to dihydroxy bile acids in gerbil bile is approximately 11:1. After administration of [4-14C]5
-cholestan-3ßbeta;-ol to gerbils with bile fistulas, 4-7% of the administered 14C was recovered in bile and 16% in urine on the first 6 days. Alkaline hydrolysis of the bile afforded the biliary acids which were separated by partition chromatography. The 14C ratio of trihydroxy to dihydroxy bile acids was 11:1. Allocholic acid was identified as the major acidic biliary metabolite. From analysis of 14C retained in selected tissues, the adrenal gland appears to be an important site for retention of cholestanol or its metabolites.
Supplementary key words allocholic acid sterol metabolism allocholanic acids 5
-cholanoic acids
Submitted on June 7, 1971
Accepted on September 1, 1971