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  • Title: Patterns of cytokines and soluble cellular receptors in the sera of children with acute chagas' disease.
    Author: Moretti E, Basso B, Cervetta L, Brigada A, Barbieri G.
    Journal: Clin Diagn Lab Immunol; 2002 Nov; 9(6):1324-7. PubMed ID: 12414768.
    Abstract:
    Cytokines and soluble cellular receptors are involved in inflammatory processes and probably in the pathogenesis of parasite and bacterial diseases. In a previous study, we reported increased levels of soluble receptors of interleukin-2 (sIL2-R) in children with acute Chagas' disease, one of the main parasitic infections that is endemic in Latin America. We sought to analyze the pattern of different cytokines and soluble receptors in the sera of children with chagasic infection. Children with acute and indeterminate stages of Chagas' disease, as well as nonchagasic children, were studied. Sera were assayed by enzyme-linked immunosorbent assay to measure the levels of tumor necrosis factor alpha (TNF-alpha), IL-6, IL-2, IL-8, IL-12, sIL-2R, and the soluble receptors of CD8 and CD4 (sCD8 and sCD4). sIL-2R and sCD8 showed the highest levels in serum in acutely infected children, decreasing after specific antiparasite therapy. Chronic children showed a pattern similar to the one of nonchagasic children. Although they were not statistically significant, TNF-alpha, IL-6, and sCD4 showed a tendency to reach high levels in the acutely infected group, whereas IL-2, IL-8, and IL-12 did not reveal changes with respect to the noninfected children. In summary, we report here the patterns of cytokines and soluble receptors in in the sera of children infected with Trypanosoma cruzi; we found significantly increased levels of sIL-2R and sCD8 in acute infection that decreased after therapy, and high levels of TNF-alpha, IL-6, and sCD4 in some of the acute patients. The measurement of sIL-2R and sCD8 may provide a useful tool in the follow-up of children with Chagas' disease.
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