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. 1986 Nov;30(5):785–788. doi: 10.1128/aac.30.5.785

Effect of calmodulin inhibitors on viability and mitochondrial potential of Plasmodium falciparum in culture.

T G Geary, A A Divo, J B Jensen
PMCID: PMC176534  PMID: 3541784

Abstract

Calmodulin inhibitors are toxic for a variety of protozoa. Chlorpromazine, calmidazolium, and trifluoperazine inhibited the incorporation of [3H]hypoxanthine and [3H]phenylalanine into Plasmodium falciparum organisms in cultures with 50% inhibitory concentrations varying from 5.1 microM (with calmidazolium) to 48 microM (with chlorpromazine), the former being more sensitive than the latter. However, these concentrations also immediately dissipated rhodamine 123 from the parasite mitochondrion. Similar concentrations inhibit other protozoa, as well as mammalian cells, and the possibility that mitochondrial function rather than that of calmodulin is the target of these drugs should be considered.

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Selected References

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