Linked Life Data

488633

Source:http://linkedlifedata.com/resource/pubmed/id/488633

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1979-12-18
pubmed:abstractText
Feces from normal subjects and patients with cerebrotendinous xanthomatosis were incubated anaerobically with labeled chenodeoxycholic acid and ursodeoxycholine acid for known periods, and the bile acids formed were analyzed by TLC and scintillation counting. In the normal subjects, 80% of the chenodeoxycholic acid and 41% of the ursodeoxycholic acid were 7-dehydroxylated to lithocholic acid during 2 hr of incubation. In contrast, the fecal flora of the CTX patients transformed only 5% of chenodeoxycholic acid and less than 1% of ursodeoxycholic acid to lithocholic acid during the same time period. In several subjects (normals and CTX), the intestinal flora converted chenodeoxycholic acid to ursodeoxycholic acid without the accumulation of the hypothetical intermediate 7-ketolithocholic acid (3 alpha-hydroxy-7-keto-5 beta-cholanoic acid). These results indicate that the fecal bacterial flora is capable of 7-dehydroxylating chenodeoxycholic acid and ursodeoxycholic acid to yield lithocholic acid. Apparently the enzymes involved are relatively stereospecific since the 7 beta-hydroxy group of ursodeoxycholic acid was removed more slowly than the 7 alpha-hydroxy group of chenodeoxycholic acid.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0016-5085
pubmed:author
pubmed:issnType
Print
pubmed:volume
77
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1068-73
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1979
pubmed:articleTitle
Transformation of chenodeoxycholic acid and ursodeoxycholic acid by human intestinal bacteria.
pubmed:publicationType
Journal Article