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A Basis for Rapid Clearance of Circulating Ring-Stage Malaria Parasites by the Spiroindolone KAE609.

Rou Zhang | Rossarin Suwanarusk | Benoit Malleret | Brian M Cooke | Francois Nosten | Yee-Ling Lau | Ming Dao | Chwee Teck Lim | Laurent Renia | Kevin Shyong Wei Tan | Bruce Russell
The Journal of infectious diseases | 2016

Recent clinical trials revealed a surprisingly rapid clearance of red blood cells (RBCs) infected with malaria parasites by the spiroindolone KAE609. Here, we show that ring-stage parasite-infected RBCs exposed to KAE609 become spherical and rigid, probably through osmotic dysregulation consequent to the disruption of the parasite's sodium efflux pump (adenosine triphosphate 4). We also show that this peculiar drug effect is likely to cause accelerated splenic clearance of the rheologically impaired Plasmodium vivax- and Plasmodium falciparum-infected RBCs.

Pubmed ID: 26136472

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FlowJo (tool)

RRID:SCR_008520

Software for single-cell flow cytometry analysis. Its functions include management, display, manipulation, analysis and publication of the data stream produced by flow and mass cytometers.

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Olympus cellSens Software (tool)

RRID:SCR_014551

Software suite for image acquisition and analysis. The software can be paired with high-quality cameras to maximize output quality and export it for sharing and research applications.

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