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Exp Parasitol. 2001 Aug;98(4):206-14.

Toxoplasma gondii: selective killing of extracellular parasites by oxidation using pyrrolidine dithiocarbamate.

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  • 1Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305-5124, U.S.A.


Extracellular Toxoplasma parasites are sensitive to pyrrolidine dithiocarbamate (PDTC) at low micromolar concentrations. Loss of parasite viability following PDTC treatment is shown to be mediated by oxidation, which is reminiscent of PDTC killing in mammalian cells. Intracellular parasites, by contrast, are resistant to PDTC killing, although treatment does cause reversible growth arrest. In addition to the possible implications relative to the biology of the parasite, these observations suggest that PDTC could be of use in eliminating undesired extracellular parasites during assays and selections in vitro.

Copyright 2001 Academic Press.

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