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The Robust and Modulated Biomarker Network Elicited by the Plasmodium vivax Infection Is Mainly Mediated by the IL-6/IL-10 Axis and Is Associated with the Parasite Load

By Allyson Guimarães da Costa, Lis Ribeiro do Valle Antonelli, Pedro Augusto Carvalho Costa, João Paulo Diniz Pimentel, Nadja Pinto Garcia, Andréa Monteiro Tarragô, Maria do Perpétuo Socorro Lopes dos Santos, Paulo Afonso Nogueira, Maria Izabel Ovellar Hekcmann, Aya Sadahiro, Andréa Teixeira Carvalho, Olindo Assis Martins Filho and Adriana Malheiro

Abstract

Background. Recent studies have shown that the inflammatory process, including the biomarker production, and the intense activation of innate immune responses are greater in the malaria caused by Plasmodium vivax than other species. Here, we examined the levels of serum biomarkers and their interaction during acute malaria. Material and Methods. Blood samples were collected from P. vivax-infected patients at admission and from healthy donors. Levels of serum biomarkers were measured by Cytometric Bead Assay or ELISA. Results.P. vivax infection triggered the production of both inflammatory and regulatory biomarkers. Levels of IL-6, CXCL-8, IFN-γ, IL-5, and IL-10 were higher in P. vivax-infected patients than in healthy donors. On the other hand, malaria patients produced lower levels of TNF-α, IL-12p70, and IL-2 than healthy individuals. While the levels of IL-10 and IL-6 were found independent on the number of malaria episodes, higher levels of these cytokines were seen in patients with higher parasite load. Conclusion. A mixed pattern of proinflammatory and regulatory biomarkers is produced in P. vivax malaria. Analysis of biomarker network suggests that IL-10 and IL-6 are a robust axis in malaria patients and that this interaction seems to be associated with the parasite load

Topics: Malária, Plasmodium vivax, ELISA
Publisher: Hindawi Publishing Corporation
Year: 2014
OAI identifier: oai:agregador.ibict.br.RI_FIOCRUZ:oai:localhost:icict/9462
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