Linked Life Data

6589165

Source:http://linkedlifedata.com/resource/pubmed/id/6589165

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
7
pubmed:dateCreated
1984-9-19
pubmed:abstractText
The metabolism of doxorubicin (A), 4'-epidoxorubicin (E) and 4'-deoxydoxorubicin (D) was studied in vitro by incubating the analogs with rat liver subcellular fractions and in vivo by chromatographic analysis of human urine. Metabolites were identified by high-pressure liquid chromatography, fluorescence spectroscopy and enzymatic conversion. Human urine contained unchanged drug as well as the corresponding alcohol metabolites in all cases; however, urine of patients who received E also contained two glucuronides which could not be detected in the urine of patients who received A or D. We have identified these glucuronides as 4'-epidoxorubicin glucuronide (E-Glu) and 4'-epidoxorubicinol glucuronide (Eol-Glu). It was concluded that the glucuronide moiety is linked to the daunosamine sugar at the C4'-OH position. A hypothesis is proposed that this glucuronidation pathway may explain the differences in pharmacokinetics and toxicity between E and A. Rat liver microsomes were found to convert all three drugs to the 7-deoxyaglycones at the same rate. Rat liver 100,000 g supernatant was found to be capable of converting these drugs to their respective alcohol metabolites, doxorubicinol (Aol) being formed somewhat slower than 4'-epidoxorubicinol (Eol) and 4'-deoxydoxorubicinol (Dol).
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0277-5379
pubmed:author
pubmed:issnType
Print
pubmed:volume
20
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
919-26
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1984
pubmed:articleTitle
Metabolism of 4'-modified analogs of doxorubicin. unique glucuronidation pathway for 4'-epidoxorubicin.
pubmed:publicationType
Journal Article, In Vitro, Research Support, Non-U.S. Gov't