Publication: In vitro anti-malarial drug susceptibility of temperate Plasmodium vivax from central China
2
Issued Date
2011-08-01
Resource Type
ISSN
00029637
Other identifier(s)
2-s2.0-80051543496
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Mahidol University
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SCOPUS
Bibliographic Citation
American Journal of Tropical Medicine and Hygiene. Vol.85, No.2 (2011), 197-201
Suggested Citation
Feng Lu, Qi Gao, Kesinee Chotivanich, Hui Xia, Jun Cao, Rachanee Udomsangpetch, Liwang Cui, Jetsumon Sattabongkot In vitro anti-malarial drug susceptibility of temperate Plasmodium vivax from central China. American Journal of Tropical Medicine and Hygiene. Vol.85, No.2 (2011), 197-201. doi:10.4269/ajtmh.2011.10-0070 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/12019
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Title
In vitro anti-malarial drug susceptibility of temperate Plasmodium vivax from central China
Abstract
In the face of recent increase of Plasmodium vivax malaria in central China, we conducted a study to evaluate in vitro susceptibility of temperate-zone P. vivax parasites to antimalarial drugs. During 2005-2006, in vitro drug susceptibility was measured for 42 clinical P. vivax isolates by using a schizont maturation inhibition technique. Geometric means of 50% inhibitory concentrations (IC50s) and 95% confidence intervals (CIs) were 10.87 (4.50-26.26) ng/mL for chloroquine, 4.21 (1.88-9.42-8) ng/mL for mefloquine, 11.82 (6.20-22.56) ng/mL for quinine, 0.13 (0.09-0.20) ng/mL for artesunate, 18.32 (8.08-41.50) ng/mL for pyrimethamine, and 17.73 (10.29-30.57) ng/mL for piperaquine. The IC50for chloroquine was lower than those obtained from isolates from Thailand and South Korea, suggesting that chloroquine remained effective against P. vivax malaria in central China. The results further indicated that temperate-zone P. vivax isolates from China were more susceptible to chloroquine, quinine, and mefloquine than isolates from Thailand. Copyright © 2011 by The American Society of Tropical Medicine and Hygiene.