Identification of a novel bile acid in swans, tree ducks, and geese: 3α,7α,15α-trihydroxy-5β-cholan-24-oic acid
| Autor: | Claudio D. Schteingart, Takashi Iida, Toshio Nambara, Takaaki Goto, Junichi Goto, Nariyasu Mano, Alan F. Hofmann, Genta Kakiyama, Lee R. Hagey |
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| Rok vydání: | 2006 |
| Předmět: |
Taurine
Chromatography Subfamily biology Bile acid medicine.drug_class QD415-436 Cell Biology Anseriformes biology.organism_classification Anatidae Biochemistry Ursodeoxycholic acid chemistry.chemical_compound Endocrinology chemistry Chenodeoxycholic acid Bile acid conjugation bile acid evolution medicine bile acid conjugation medicine.drug |
| Zdroj: | Journal of Lipid Research, Vol 47, Iss 7, Pp 1551-1558 (2006) |
| ISSN: | 0022-2275 |
| DOI: | 10.1194/jlr.m600149-jlr200 |
| Popis: | By HPLC, a taurine-conjugated bile acid with a retention time different from that of taurocholate was found to be present in the bile of the black-necked swan, Cygnus melanocoryphus. The bile acid was isolated and its structure, established by (1)H and (13)C NMR and mass spectrometry, was that of the taurine N-acyl amidate of 3alpha,7alpha,15alpha-trihydroxy-5beta-cholan-24-oic acid. The compound was shown to have chromatographic and spectroscopic properties that were identical to those of the taurine conjugate of authentic 3alpha,7alpha,15alpha-trihydroxy-5beta-cholan-24-oic acid, previously synthesized by us from ursodeoxycholic acid. By HPLC, the taurine conjugate of 3alpha,7alpha,15alpha-trihydroxy-5beta-cholan-24-oic acid was found to be present in 6 of 6 species in the subfamily Dendrocygninae (tree ducks) and in 10 of 13 species in the subfamily Anserinae (swans and geese) but not in other subfamilies in the Anatidae family. It was also not present in species from the other two families of the order Anseriformes. 3alpha,7alpha,15alpha-Trihydroxy-5beta-cholan-24-oic acid is a new primary bile acid that is present in the biliary bile acids of swans, tree ducks, and geese and may be termed 15alpha-hydroxy-chenodeoxycholic acid. |
| Databáze: | OpenAIRE |
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