Simultaneous quantitation of HIV-protease inhibitors ritonavir, lopinavir and indinavir in human plasma by UPLC-ESI-MS-MS

Journal of Chromatographic Science
Tulsi Das MishraPranav S Shrivastav

Abstract

A selective, sensitive and high-throughput ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS-MS) method has been developed and validated for the quantification of HIV-protease inhibitors ritonavir (RTV), lopinavir (LPV) and indinavir (IDV) in human plasma. Sample clean-up involved protein precipitation of both drugs and fluconazole used as internal standard from 100 µL human plasma. All the analytes were chromatographically separated on a Waters Acquity UPLC BEH C18 (2.1 × 50 mm, 1.7 µm particle size) analytical column using 0.1% formic acid and methanol (40:60, v/v) as the mobile phase. The parent → product ion transitions for ritonavir (m/z 721.40→ 296.10), lopinavir (m/z 629.40→ 447.40) and indinavir (m/z 614.4→ 421.0) IS (m/z 307.10 → 220.10) were monitored on a triple quadrupole mass spectrometer, operating in the multiple reaction monitoring and positive ion mode. The method was validated over the concentration range of 30-15,000 ng/mL for LPV and IDV and 3-1500 ng/mL for RTV. The method was successfully applied to a pilot bioequivalence study in 36 healthy human subjects after oral administration of lopinavir 200 mg and ritonavir 50 mg tablet formulation under fasting conditions.

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Citations

Jun 1, 2014·Expert Opinion on Drug Metabolism & Toxicology·Diane E T BastiaansDavid M Burger
May 12, 2016·Drug Metabolism and Personalized Therapy·Thirumaleswara GoudRajendra Prasad Thatipamula
Mar 24, 2017·Journal of Chromatographic Science·Swati JaiswalJawahar Lal

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