Linked Life Data

16138223

Source:http://linkedlifedata.com/resource/pubmed/id/16138223

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
2005-9-2
pubmed:abstractText
The MDR1 gene encodes the P-glycoprotein, an efflux transporter with broad substrate specificity. P-glycoprotein has raised great interest in pharmacogenetics because it transports a variety of structurally divergent drugs, including lipid-lowering drugs. The synonymous single-nucleotide polymorphism C3435T and the nonsynonymous single-nucleotide polymorphism G2677T/A in MDR1 have been indicated as potential determinants of variability in drug disposition and efficacy. In order to evaluate the effect of G2677T/A and C3435T MDR1 polymorphisms on serum levels of lipids before and after atorvastatin administration, 69 unrelated hypercholesterolemic individuals from São Paulo city, Brazil, were selected and treated with 10 mg atorvastatin orally once daily for four weeks. MDR1 polymorphisms were analyzed by PCR-RFLP. C3435T and G2677T polymorphisms were found to be linked. The allelic frequencies for C3435T polymorphism were 0.536 and 0.464 for the 3435C and 3435T alleles, respectively, while for G2677T/A polymorphism allele frequencies were 0.580 for the 2677G allele, 0.384 for the 2677T allele and 0.036 for the 2677A allele. There was no significant relation between atorvastatin response and MDR1 polymorphisms (repeated measures ANOVA; P > 0.05). However, haplotype analysis revealed an association between T/T carriers and higher basal serum total (TC) and LDL cholesterol levels (TC: 303 +/- 56, LDL-C: 216 +/- 57 mg/dl, respectively) compared with non-T/T carriers (TC: 278 +/- 28, LDL-C: 189 +/- 24 mg/dl; repeated measures ANOVA/Tukey test; P < 0.05). These data indicate that MDR1 polymorphism may have an important contribution to the control of basal serum cholesterol levels in Brazilian hypercholesterolemic individuals of European descent.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0100-879X
pubmed:author
pubmed:issnType
Print
pubmed:volume
38
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1389-97
pubmed:dateRevised
2008-8-27
pubmed:meshHeading
pubmed-meshheading:16138223-Adult, pubmed-meshheading:16138223-Aged, pubmed-meshheading:16138223-Anticholesteremic Agents, pubmed-meshheading:16138223-Brazil, pubmed-meshheading:16138223-Cholesterol, LDL, pubmed-meshheading:16138223-European Continental Ancestry Group, pubmed-meshheading:16138223-Female, pubmed-meshheading:16138223-Gene Frequency, pubmed-meshheading:16138223-Genes, MDR, pubmed-meshheading:16138223-Haplotypes, pubmed-meshheading:16138223-Heptanoic Acids, pubmed-meshheading:16138223-Humans, pubmed-meshheading:16138223-Hypercholesterolemia, pubmed-meshheading:16138223-Male, pubmed-meshheading:16138223-Middle Aged, pubmed-meshheading:16138223-P-Glycoprotein, pubmed-meshheading:16138223-Polymerase Chain Reaction, pubmed-meshheading:16138223-Polymorphism, Genetic, pubmed-meshheading:16138223-Polymorphism, Restriction Fragment Length, pubmed-meshheading:16138223-Polymorphism, Single Nucleotide, pubmed-meshheading:16138223-Pyrroles
pubmed:year
2005
pubmed:articleTitle
High baseline serum total and LDL cholesterol levels are associated with MDR1 haplotypes in Brazilian hypercholesterolemic individuals of European descent.
pubmed:affiliation
Departamento de Análises Clínicas e Toxicológicas, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, SP, Brazil.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't