The effect of ABCB1 polymorphism on the pharmacokinetics of saquinavir alone and in combination with ritonavir

被引:16
作者
la Porte, C. J. L. [1 ]
Li, Y.
Beique, L.
Foster, B. C.
Chauhan, B.
Garber, G. E.
Cameron, D. W.
van Heeswijk, R. P. G.
机构
[1] Ottawa Hosp, Ottawa Hlth, Res Inst, Div Infect Dis, Ottawa, ON, Canada
[2] Univ Ottawa, Dept Med, Ottawa, ON K1N 6N5, Canada
[3] Hlth Canada, Off Sci, Therapeut Prod Directorate, Ottawa, ON, Canada
[4] Univ Ottawa, Ctr Res Biopharmaceut, Ottawa, ON K1N 6N5, Canada
关键词
D O I
10.1038/sj.clpt.6100157
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
This genotype panel study investigated the effect of ABCB1 polymorphism in exon 26 ( C3435T), exon 21 ( G2677T/ A), and exon 12 ( C1236T) on saquinavir pharmacokinetics and on the expression and activity of P-glycoprotein ( P-gp) in peripheral blood monocytic cells ( PBMCs). One hundred and fifty healthy volunteers were genotyped to identify 15 TT3435 and 15 CC3435 individuals. In these individuals, saquinavir pharmacokinetics were assessed after administration of a single oral dose of saquinavir 1,000 mg and saquinavir/ritonavir 1,000/100mg. PBMC P-gp expression and activity were assessed in 15 and 19 subjects. The co-administration of ritonavir on study day 2 caused a significant increase in saquinavir exposure, in both TT3435 and CC3435 individuals. No correlation was observed between the ABCB1 C3435T, G2677T/ A, and C1236T polymorphisms, separately and in haplotypes, with saquinavir pharmacokinetics, administered with or without ritonavir and with PBMC P-gp expression and activity. In conclusion, ABCB1 polymorphism has no pronounced effect on saquinavir exposure.
引用
收藏
页码:389 / 395
页数:7
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