期刊
AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY
卷 195, 期 1, 页码 296-301出版社
MOSBY-ELSEVIER
DOI: 10.1016/j.ajog.2006.01.017
关键词
placental transfer; ex vivo perfused human cotyledon; human immunodeficiency virus; antiretroviral; protease inhibitor; lopinavir; ritonavir
Objective: This study was done to determine the placental transfer of the human immunodeficiency virus protease inhibitor lopinavir with ritonavir. Study design: Twenty-five human cotyledons that were obtained after uneventful pregnancies and deliveries were perfused in an open double circuit with lopinavir (1099-10,606 mu g/L) and ritonavir (254-1147 mu g/L) at various albumin concentrations (2, 10, and 40 g/L). Results: The fetal transfer rate of lopinavir, when combined with ritonavir, was 23.6% +/- 6.9% at an albumin concentration of 2 g/L. The fetal transfer rate decreased to 20.7% +/- 10% at an albumin concentration of 10 g/L and to 3.3% +/- 0.5% at an albumin concentration of 40 g/L. Conclusion: The placental transfer of lopinavir, a highly protein-bound molecule, was compatible with passive diffusion of the unbound fraction. Even at physiologic maternal albumin concentrations, the amount of drug transferred into the fetal compartment was well above the 50% inhibitory concentration. (c) 2006 Mosby, Inc. All rights reserved.
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