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The Pharmacokinetics of Amprenavir, Zidovudine, and Lamivudine in the Genital Tracts of Men Infected with Human Immunodeficiency Virus Type 1 (AIDS Clinical Trials Group Study 850)
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The Pharmacokinetics of Amprenavir, Zidovudine, and Lamivudine in the Genital Tracts of Men Infected with Human Immunodeficiency Virus Type 1 (AIDS Clinical Trials Group Study 850)
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The Pharmacokinetics of Amprenavir, Zidovudine, and Lamivudine in the Genital Tracts of Men Infected with Human Immunodeficiency Virus Type 1 (AIDS Clinical Trials Group Study 850)
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Journal Article
The Pharmacokinetics of Amprenavir, Zidovudine, and Lamivudine in the Genital Tracts of Men Infected with Human Immunodeficiency Virus Type 1 (AIDS Clinical Trials Group Study 850)
2002
Overview
The AIDS Clinical Trials Group Study 850 (ACTG 850) evaluated the penetration of zidovudine (ZDV), lamivudine (3TC), and amprenavir (APV), given alone and in combination with the 2 nucleoside analogues, into the male genital tract, because these factors may affect human immunodeficiency virus (HIV) type 1 suppression and transmission. Nineteen men receiving APV monotherapy and 12 men receiving triple therapy donated blood plasma (BP) and seminal plasma (SP) during therapy. Paired SP and BP were used to calculate compartmental concentration ratios. APV SP concentrations were consistently lower than BP concentrations, ZDV SP concentrations approximated BP concentrations early but became greater later in the dosing interval, and 3TC SP concentrations were substantially greater than BP concentrations throughout. Observed SP concentrations plotted with population BP concentration-time curves confirmed these findings, suggesting that passive diffusion (APV), slowed elimination (ZDV), and either active accumulation and/or inhibition of elimination (3TC) are responsible for SP concentrations of these agents. The antiretroviral effect of APV monotherapy was related to APV concentrations
Publisher
The University of Chicago Press,University of Chicago Press
Subject
/ AIDS
/ Anti-HIV Agents - pharmacokinetics
/ Antibiotics. Antiinfectious agents. Antiparasitic agents
/ Biological and medical sciences
/ Genitalia, Male - metabolism
/ HIV
/ HIV 1
/ HIV Infections - drug therapy
/ Humans
/ Lamivudine - pharmacokinetics
/ Male
/ Pharmacology. Drug treatments
/ RNA
/ Semen
/ Sulfonamides - pharmacokinetics
/ Viral diseases of the lymphoid tissue and the blood. Aids
/ Viruses
