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Effect of Arteether and Pyrimethamine Coadministration on the Pharmacokinetic and Pharmacodynamic Profile of Ormeloxifene

Abhisheak Sharma, Swati Jaiswal, Mahendra Shukla, Jawahar Lal

Naunyn Schmiedebergs Arch Pharmacol. 2017 Sep;390(9):971-976.

PMID: 28689253

Abstract:

The study was intended to investigate the effect of concomitant administration of antimalarial drug (pyrimethamine or arteether) on pharmacokinetic and post coitus contraceptive efficacy of ormeloxifene in female Sprague-Dawley rats. A serial sampling technique coupled with LC-MS/MS detection was utilized for quantification of ormeloxifene in plasma samples collected from female rats treated with ormeloxifene only and ormeloxifene with pyrimethamine or arteether. Coitus-proven female rats were utilized to investigate the effect of pyrimethamine or arteether coadministration on contraceptive efficacy of ormeloxifene by investigating the presence or absence of implantations and status of corpora lutea on day 10 post coitum. None of the sperm-positive rats treated with ormeloxifene with or without coadministration of pyrimethamine or arteether showed any sign of pregnancy, confirming that concomitant administration of antimalarial drugs (pyrimethamine or arteether) did not affect the pharmacodynamic profile of ormeloxifene. Although there was no sign of pharmacodynamic interaction, the volume of distribution of ormeloxifene increased significantly on cotreatment with pyrimethamine. However, coadministration of arteether did not affect any of the pharmacokinetic parameters of ormeloxifene. The compiled results of preliminary study in female rats support that pyrimethamine or arteether can be prescribed with ormeloxifene.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP31477608 Ormeloxifene Ormeloxifene 31477-60-8 Price
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