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  • Title: Parasite antigen-specific interleukin-10 and antibody reponses predict accelerated parasite clearance in Plasmodium falciparum malaria.
    Author: Luty AJ, Lell B, Schmidt-Ott R, Lehman LG, Luckner D, Greve B, Matousek P, Herbich K, Schmid D, Ulbert S, Migot-Nabias F, Dubois B, Deloron P, Kremsner PG.
    Journal: Eur Cytokine Netw; 1998 Dec; 9(4):639-46. PubMed ID: 9889408.
    Abstract:
    Using strict inclusion criteria, we conducted a hospital-based, case-control study in which 100 Gabonese children with severe Plasmodium falciparum malaria were matched for age, gender and provenance with 100 children presenting with mild malaria. Parasite antigen-specific cellular and humoral immunological responses were measured and compared with post-treatment parasite clearance times in each group. Significantly faster parasite clearance times were associated with in vitro production of IL-10 by acute-phase peripheral blood mononuclear cells (PBMC) in response to both liver and asexual stage parasite antigens, but not with proliferative, IFN-gamma, or TNF responses to the same antigens. In addition, in those children with mild malaria, higher levels of acute-phase antibody responses to liver stage antigen-1 (LSA-1) were associated with faster parasite clearance times, and were correlated with the presence of IL-10 responses to the same antigen. No such associations were found for IL-10 or antibody responses to a range of asexual blood stage antigens. Those with severe malaria had significantly lower levels of anti-LSA-1 antibodies compared to their counterparts with mild malaria. In conclusion, the results of this study suggest that parasite antigen-specific IL-10-mediated antibody responses may play a role in the control of asexual stage parasite multiplication in P. falciparum malaria.
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