Modulation of Chemokine Production and Inflammatory Responses in Interferon-gamma- and Tumor Necrosis Factor-R1-deficient Mice During Trypanosoma Cruzi Infection
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Infection with Trypanosoma cruzi causes a strong inflammatory reaction at the inoculation site and, later, in the myocardium. The present study investigates the role of cytokines as modulators of T. cruzi-induced chemokine expression in vivo and in vitro. In macrophage cultures, although the stimulation with interferon (IFN)-gamma increases the expression of IP-10, it blocks KC expression. Tumor necrosis factor (TNF)-alpha, on the other hand, potentiates KC, IP-10, macrophage inflammatory protein-1alpha, and JE/monocyte chemotatic protein-1 expression. Interleukin-10 and transforming growth factor-beta inhibited almost all chemokines tested. The role of IFN-gamma and TNF-alpha in chemokine modulation during infection was investigated in T. cruzi-infected IFN-gamma-deficient (GKO) or TNF-R1/p55-deficient (p55-/-) mice. The expression of chemokines detected in the inoculation site correlated with the infiltrating cell type observed. Although GKO mice had a delayed and intense neutrophilic infiltrate correlating with the expression of KC and macrophage inflammatory protein-2, none of the above was observed in p55-/- mice. The detection of infiltrating T cells, Mig, and IP-10 in the myocardium was observed in wild-type and p55-/-, but not in GKO mice. Together, these results suggest that the regulatory roles of IFN-gamma and TNF-alpha on chemokine expression may play a crucial role in the modulation of the inflammatory response during T. cruzi infection and mediate resistance to infection.
Fracasso M, Reichert K, Bottari N, da Silva A, Schetinger M, Monteiro S Purinergic Signal. 2021; 17(3):493-502.
PMID: 34302569 PMC: 8410899. DOI: 10.1007/s11302-021-09803-9.
Gibaldi D, Vilar-Pereira G, Resende Pereira I, Silva A, Barrios L, Ramos I Front Immunol. 2020; 11:306.
PMID: 32194558 PMC: 7063958. DOI: 10.3389/fimmu.2020.00306.
Resolvin D1 Administration Is Beneficial in Trypanosoma cruzi Infection.
Horta A, Williams T, Han B, Ma Y, Menezes A, Tu V Infect Immun. 2020; 88(6).
PMID: 32152197 PMC: 7240093. DOI: 10.1128/IAI.00052-20.
Immunity and vaccine development efforts against Trypanosoma cruzi.
Rios L, Vazquez-Chagoyan J, Pacheco A, Zago M, Garg N Acta Trop. 2019; 200:105168.
PMID: 31513763 PMC: 7409534. DOI: 10.1016/j.actatropica.2019.105168.
Llaguno M, da Silva M, Batista L, da Silva D, de Sousa R, de Resende L Infect Immun. 2019; 87(8).
PMID: 31085707 PMC: 6652764. DOI: 10.1128/IAI.00103-19.