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  • Title: Evaluation of the inhibitory effects of miltefosine on the growth of Babesia and Theileria parasites.
    Author: AbouLaila M, Batadoj D, Salama A, Munkhjargal T, Ichikawa-Seki M, A Terkawi M, Yokoyama N, Igarashi I.
    Journal: Vet Parasitol; 2014 Aug 29; 204(3-4):104-10. PubMed ID: 24938827.
    Abstract:
    Miltefosine, a membrane-active synthetic ether-lipid analogue, has antiproliferative and antiparasitic effects. In this study, the inhibitory effects of miltefosine were evaluated against three Babesia species and Theileria equi in vitro and against Babesia microti in mice. The drug showed significant growth inhibition from an initial parasitemia of 1% for Babesia bovis, Babesia bigemina, Babesia caballi, and T. equi with IC50 values of 25, 10.2, 10.4, and 99 μM, respectively. Complete inhibition was observed at 200 μM of miltefosine on the third day of culture for the three Babesia species and 400 μM on the fourth day for T. equi. Reverse-transcription PCR (RT-PCR) showed that miltefosine inhibited the transcription of choline-phosphate cytidylyltransferase in B. bovis. Miltefosine at a dose rate of 30 mg/kg resulted in a 71.7% inhibition of B. microti growth in BALB/c mice. Miltefosine might be used for drug therapy in babesiosis.
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