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- W1982990258 abstract "Objective: To assess the pharmacokinetics and tolerability of lopinavir (LPV), ritonavir (RTV) and atazanavir (ATV) as a double-boosted protease inhibitor regimen in HIV-infected adults. Methods: Sixteen patients who started LPV/RTV (400/100 mg b.i.d.) and ATV (300 mg q.d.) were enrolled in the study group (arm A). LPV pharmacokinetics were compared to those of two historical groups: arm B, 15 patients who received LPV/RTV (400/100 mg b.i.d.); and arm C, 25 patients who received LPV/RTV/saquinavir (SQV) (400/100/1000 mg b.i.d.). ATV pharmacokinetics were compared to those of 15 consecutive patients who received ATV and RTV (300/100 mg q.d.) (arm D). Drug concentrations were measured by HPLC. Results: LPV concentrations were significantly higher in arm A than in arms B and C. Median (interquartile range) LPV area under the curve (AUC)0–12 values were 115.7 (99.8–136.5), 85.2 (68.3–109.2) and 85.1 (60.6–110.1) μg/h/ml, respectively. Cmax values were 12.2 (10.7–14.5), 9.5 (6.8–13.9) and 10.0 (6.9–13.6) μg/ml, respectively. Cmin values were 9.1 (7.1–10.4), 5.6 (4.7–8.2) and 5.5 (4.2–7.5) μg/ml, respectively. No difference was observed for ATV AUC0–24 or Cmax between arms A and D. ATV Cmin values were 1.07 (0.61–1.79) in arm A and 0.58 (0.32–0.83) in arm D (P = 0.001). Treatment was not discontinued in any patient because of adverse effects. At 24 weeks, viral load was < 50 copies/ml in 13 of 16 patients. Conclusions: The combination of ATV and LPV/RTV provided high plasma concentrations of both PI, which seemed to be appropriate for patients with multiple prior therapeutic failures, yielding good tolerability and substantial antiviral efficacy." @default.
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- W1982990258 date "2006-05-12" @default.
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- W1982990258 title "Atazanavir and lopinavir/ritonavir: pharmacokinetics, safety and efficacy of a promising double-boosted protease inhibitor regimen" @default.
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- W1982990258 doi "https://doi.org/10.1097/01.aids.0000226953.56976.ad" @default.
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