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Khalid KE, Nascimento MSL, Sacramento LA, Costa DL, Lima-Júnior DS, Carregaro V, da Silva JS. T1/ST2 deficient mice display protection against Leishmania infantum experimental infection. Acta Trop 2017; 172:1-6. [PMID: 28427965 DOI: 10.1016/j.actatropica.2017.04.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 04/04/2017] [Accepted: 04/14/2017] [Indexed: 11/28/2022]
Abstract
T1/ST2 is a surface marker selectively expressed on type 2 helper (TH2) effector cells. As Leishmania infection in susceptible BALB/c mice have ascribed to a polarized TH2 response, this study aim to investigate the T1/ST2 (the receptor for IL-33), as a typical TH2 marker in the postulation that a shift towards a beneficial TH1 response would occur in the absence of ST2. For this, ST2 knockout (ST2-/-) and WT BALB/c mice were experimentally infected in the retro-orbital sinus with L. infantum. We showed that ST2-/- animals displayed better control of parasite burden in both spleen and liver tissues at different time points of chronic phases, and reduced spleenomegaly and hepatomegaly compared with the wild-type (WT) mice. This was associated with increased in the IFN-γ levels and expression by CD4+ and CD8+ lymphocytes. The inflammatory response encompasses transaminases (AST and ALT) releases and NO productions were remarkably lower in ST2-/- mice compared with WT. These data suggest that, ST2-/-) exert protection against L. infantum infection and probably shift the immune response toward TH1 induction.
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Affiliation(s)
- Khalid Eltahir Khalid
- Department of Biochemistry and Immunology, Ribeirao Preto Medical School, University of Sao Paulo, Avenida Bandeirantes 3900, 14049-900 Ribeirao Preto, SP, Brazil; Department of Biochemistry and Nutrition, Faculty of Medicine, University of Gezira, P.O. Box 20, Wad Medani, Sudan; Department of Basic Medical Sciences, Faculty of Applied Medical Sciences, Albaha University, Albaha, Saudi Arabia.
| | - Manuela Sales Lima Nascimento
- Department of Biochemistry and Immunology, Ribeirao Preto Medical School, University of Sao Paulo, Avenida Bandeirantes 3900, 14049-900 Ribeirao Preto, SP, Brazil
| | - Laís Amorim Sacramento
- Department of Biochemistry and Immunology, Ribeirao Preto Medical School, University of Sao Paulo, Avenida Bandeirantes 3900, 14049-900 Ribeirao Preto, SP, Brazil
| | - Diego Luís Costa
- Department of Biochemistry and Immunology, Ribeirao Preto Medical School, University of Sao Paulo, Avenida Bandeirantes 3900, 14049-900 Ribeirao Preto, SP, Brazil
| | - Djalma Souza Lima-Júnior
- Department of Biochemistry and Immunology, Ribeirao Preto Medical School, University of Sao Paulo, Avenida Bandeirantes 3900, 14049-900 Ribeirao Preto, SP, Brazil
| | - Vanessa Carregaro
- Department of Biochemistry and Immunology, Ribeirao Preto Medical School, University of Sao Paulo, Avenida Bandeirantes 3900, 14049-900 Ribeirao Preto, SP, Brazil
| | - João Santana da Silva
- Department of Biochemistry and Immunology, Ribeirao Preto Medical School, University of Sao Paulo, Avenida Bandeirantes 3900, 14049-900 Ribeirao Preto, SP, Brazil
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