MRP 8/14 as marker for Plasmodium falciparum-induced malaria episodes in individuals in a holoendemic area.

AUTOR(ES)
RESUMO

Presence of Plasmodium falciparum parasites in the peripheral blood of patients in a holoendemic area does not necessarily show that their illness is due to malaria. The aim of the present project was therefore to look for biological markers related to symptomatology or clinical events during a malaria episode. We focused our work on a complex of heterodimeric calcium-binding proteins secreted by stimulated neutrophils and monocytes, named MIF or myeloid-related proteins (MRP 8/14). In a longitudinal study including 51 adults from Ifakara, Tanzania (84.7% prevalence for P. falciparum in adults during the study), the level of MRP 8/14 in the serum was significantly related to the parasite load (Spearman correlation coefficient, 0.52; P < 0.0001). In the serum from children up to 6 years admitted at a health post the MRP 8/14 levels were closely related to parasitemia but also to fever episodes (Spearman correlation coefficients, 0.96 and 0.736; P < 0.0001 and P < 0.001, respectively). Although not specific to malaria, the measurement of MRP 8/14 could be an additional tool in assessing malaria-related morbidity.

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