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A case control pharmacokinetic study evaluating the effects of atazanavir-ritonavir on the pharmacokinetics and toxicity of lumefantrine in people living with HIV attending APIN clinic of the Lagos University Teaching Hospital
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Atazanavir-ritonavir (ATVr) based antiretroviral therapy and artemether-lumefantrine (AL) are commonly used drugs for the treatment of Human Immune Deficiency Virus (HIV) infection and malaria respectively in Nigeria. However, both drugs interact with Cytochrome P 3A4 (CYP 3A4) isoenzymes which may spawn clinically significant pharmacokinetic interactions.
The study was aimed at evaluating the effects of atazanavir-ritonavir on the pharmacokinetics and toxicity of lumefantrine.
In a case control pharmacokinetic study, twenty participants who tested positive for Plasmodium falciparum malaria were recruited and divided into two groups (ATVr-arm, n=10; and Control-arm, n= 10). All the participants were administered with 6 doses of AL 80-480 mg (Coartem). Thereafter, blood samples were collected from them at different time intervals over seven days. The lumefantrine concentration in each sample was determined with high-performance liquid chromatography (HPLC) and entered into WinNonlin® software to determine the pharmacokinetic parameters of lumefantrine which were compared between the test and control groups. Toxicity was evaluated with adverse events monitoring, electrocardiography, haematological and blood chemistry tests at pre and post doses of artemether-lumefantrine.
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20 participants in 2 patient groups
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Data sourced from clinicaltrials.gov
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