Linked Life Data

9421108

Source:http://linkedlifedata.com/resource/pubmed/id/9421108

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1998-1-20
pubmed:abstractText
Blood samples from 34 recipients of kidney transplants who were on multidrug therapy including azathioprine were analyzed using two methods in parallel for red blood cell (RBC) concentrations of methylated 6-mercaptopurine (6-MP) metabolites. Chemical hydrolysis with high-performance liquid chromatography (HPLC) showed values ranging from 0 to 20,259 pmol/8 x 10(8) RBCs, compared with enzymatic hydrolysis with HPLC that resulted in values ranging from 16 to 22,252 pmol/100 microl packed RBC. Results of the two methods were highly correlated; the coefficient of correlation (r) was equal to 0.93 (95% confidence interval [CI] = 0.87-0.97 [y = 1.12x + 187]). Within series imprecision was 3.1% compared with 6.3%, and between-run imprecision was 10.3% compared with 20.7%, for the enzymatic and chemical methods, respectively. The enzymatic method was found to be more specific and to save time and labor, but with the chemical method methylated metabolites and 6-thioguanine nucleotides (6-TGN), the main active metabolites of azathioprine and 6-MP, can be measured in the same run. The results indicate that methylated 6-MP metabolites mainly exist as ribonucleotides in RBCs.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0163-4356
pubmed:author
pubmed:issnType
Print
pubmed:volume
19
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
663-8
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Analysis of methylated 6-mercaptopurine metabolites in human red blood cells: comparison of two methods.
pubmed:affiliation
Department of Pharmacology, Institute of Medical Biology, University of Tromsø, Norway.
pubmed:publicationType
Journal Article, Comparative Study