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Interleukin-10 Responses to Liver-Stage Antigen 1 Predict Human Resistance to Plasmodium falciparum

By Jonathan D. Kurtis, David E. Lanar, Malachi Opollo and Patrick E. Duffy


The design of an effective vaccine against Plasmodium falciparum, the most deadly malaria parasite of humans, requires a careful definition of the epitopes and the immune responses involved in protection. Liver-stage antigen 1 (LSA-1) is specifically expressed during the hepatic stage of P. falciparum and elicits cellular and humoral immune responses in naturally exposed individuals. We report here that interleukin-10 (IL-10) production in response to LSA-1 predicts resistance to P. falciparum after eradication therapy. Resistance was not related to gamma interferon or tumor necrosis factor alpha production. This is the first report that human IL-10 responses are associated with resistance after eradication therapy, and our findings support the inclusion of LSA-1 in a vaccine against malaria

Topics: Fungal and Parasitic Infections
Publisher: American Society for Microbiology
Year: 1999
OAI identifier: oai:pubmedcentral.nih.gov:116527
Provided by: PubMed Central
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