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Effects of ABCB1 polymorphisms on plasma carbamazepine concentrations and pharmacoresistance in Chinese patients with epilepsy.
MedLine Citation:
PMID:  21493161     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
P-glycoprotein may play a role in drug resistance in epilepsy by limiting gastrointestinal absorption and brain access of antiepileptic drugs (AEDs). We sought to investigate the effects of ABCB1 polymorphisms on plasma carbamazepine (CBZ) concentrations and pharmacoresistance in Chinese patients with epilepsy. C1236T, G2677T/A, and C3435T polymorphisms of ABCB1 were genotyped by polymerase chain reaction amplification followed by restriction fragment length polymorphism analysis or direct automated DNA sequencing in 84 patients treated with CBZ monotherapy. Patients with 3435-TT (n=15) had lower adjusted CBZ concentrations than those with 3435-CC (n=30) (P=0.026). However there were no associations between all the studied genotypes, haplotypes, or diplotypes involving ABCB1 C1236T, G2677T/A, and C3435T polymorphisms and pharmacoresistance in the patient cohort. Our results suggest that ABCB1 3435-TT is associated with decreased plasma CBZ levels in Chinese patients with epilepsy. However, whether this contributes to CBZ resistance needs to be further investigated in a larger cohort of patients.
Authors:
Hongmei Meng; Guimei Guo; Jinyan Ren; Hui Zhou; Yubin Ge; Yingjie Guo
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-12
Journal Detail:
Title:  Epilepsy & behavior : E&B     Volume:  -     ISSN:  1525-5069     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100892858     Medline TA:  Epilepsy Behav     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Inc. All rights reserved.
Affiliation:
The First Hospital of Jilin University, Changchun, People's Republic of China.
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