Influence of CYP2B6 genetic variants on plasma and urine concentrations of bupropion and metabolites at steady state.

ABSTRACT:

Background

Bupropion, an antidepressant and smoking cessation medication, is metabolized to hydroxybupropion (HB), an active metabolite, primarily by CYP2B6.

Objectives

To compare plasma concentrations of bupropion and metabolites at steady state in healthy volunteers with and without CYP2B6 genetic variants.

Methods

In a genotype-guided study of 42 healthy individuals, we measured the plasma and urine concentrations of bupropion and its metabolites, HB, threohydrobupropion, and erythrohydrobupropion after 7 days of sustained-release bupropion dosing.

Results

CYP2B6*6 and *18 gene variants were associated with ~33% reduced concentrations of HB, with no effects on concentrations of bupropion or other metabolites. We could account for 50% of the variation in HB c

SUBMITTER: Benowitz NL 

PROVIDER: S-EPMC3763712 | biostudies-literature | 2013 Mar

REPOSITORIES: biostudies-literature