Volume 88, Issue 6
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



Infection of mosquitoes by humans is not always successful in the setting of patent gametocytemia. This study tested the hypothesis that pro- or anti-inflammatory cytokines are associated with transmission of to mosquitoes in experimental infection. Blood from adults with acute, non-severe malaria was fed to laboratory-reared F1 mosquitoes. A panel of cytokines at the time of mosquito infection was assessed in patient sera and levels compared among subjects who did and did not infect mosquitoes. Overall, blood from 43 of 99 (43%) subjects led to mosquito infection as shown by oocyst counts. Levels of IL-10, IL-6, TNF-α, and IFN-γ were significantly elevated in vivax infection and normalized 3 weeks later. The anti-inflammatory cytokine IL-10 was significantly higher in nontransmitters compared with top transmitters but was not in TNF-α and IFN-γ. The IL-10 elevation during acute malaria was associated with transmission blocking.


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  • Received : 13 Dec 2012
  • Accepted : 07 Feb 2013
  • Published online : 05 Jun 2013

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