Assessment of pharmacokinetic compatibility of short acting CDRI candidate trioxane derivative, 99-411, with long acting prescription antimalarials, lumefantrine and piperaquine.

Abstract:

:The pharmacokinetic compatibility of short-acting CDRI candidate antimalarial trioxane derivative, 99-411, was tested with long-acting prescription antimalarials, lumefantrine and piperaquine. LC-ESI-MS/MS methods were validated for simultaneous bioanalysis of lumefantrine and 99-411 and of piperaquine and 99-411 combinations. The interaction studies were performed in rats using these validated methods. The total systemic exposure of 99-411 increased when administered with either lumefantrine or piperaquine. However, co-administration of 99-411 significantly decreased the systemic exposure of piperaquine by half-fold while it had no effect on the kinetics of lumefantrine. 99-411, thus, seemed to be a good alternative to artemisinin derivatives for combination treatment with lumefantrine. To explore the reason for increased plasma levels of 99-411, an in situ permeability study was performed by co-perfusing lumefantrine and 99-411. In presence of lumefantrine, the absorption of 99-411 was significantly increased by 1.37 times than when given alone. Lumefantrine did not affect the metabolism of 99-411 when tested in vitro in human liver microsomes. Additionally, ATPase assay suggest that 99-411 was a substrate of human P-gp, thus, indicating the probability of interaction at the absorption level in humans as well.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Taneja I,Raju KS,Singh SP,Wahajuddin M

doi

10.1038/srep17264

subject

Has Abstract

pub_date

2015-11-25 00:00:00

pages

17264

issn

2045-2322

pii

srep17264

journal_volume

5

pub_type

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