Linked Life Data

17425754

Source:http://linkedlifedata.com/resource/pubmed/id/17425754

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2007-4-11
pubmed:abstractText
The intestinal efflux pump P-glycoprotein (P-gp), the product of the multi-drug resistance-1 (MDR-1) gene, significantly influences the pharmacokinetics of several drugs. Ciclosporin is a substrate for P-gp and is metabolized by cytochrome P450 (CYP) 3A enzymes. P-gp activity is affected by several known single nucleotide polymorphisms (SNPs) and haplotypes. MDR-1 genotypes of SNPs C1236T, G2677T/A and C3435T, as well as haplotypes C-G-C and T-T-T and CYP3A5*1 genotype (predictive of CYP3A5 expression), were related to ciclosporin blood concentrations measured at both 0 and 2 h after drug dosing in 197 stable renal transplant patients. Significant differences (of a magnitude unlikely to be relevant clinically) in dose-normalized blood ciclosporin concentrations were found only between MDR-1 genotypes of the C1236T SNP and between haplotype groups C-G-C and T-T-T in patients that were expressers of CYP3A5. MDR-1 SNPs and haplotypes and also CYP3A5*1 genotype, do not appear to have a major influence on ciclosporin pharmacokinetics.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0902-0063
pubmed:author
pubmed:issnType
Print
pubmed:volume
21
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
252-7
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:articleTitle
Multi-drug resistance gene-1 (MDR-1) haplotypes and the CYP3A5*1 genotype have no influence on ciclosporin dose requirements as assessed by C0 or C2 measurements.
pubmed:affiliation
Analytical Unit, Cardiac & Vascular Science, St George's University of London, London, UK. frederic@sgul.ac.uk
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't