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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 104, No. 6, 2009, pp. 918-922
Bioline Code: oc09192
Full paper language: English
Document type: Short Communication
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 104, No. 6, 2009, pp. 918-922

 en Histopathology of Leishmania major infection: revisiting L. major histopathology in the ear dermis infection model
Cangussú, Silvia Dantas; de Souza, Carolina Carvalho; Campos, Camila França; Vieira, Leda Quercia; Afonso, Luís Carlos Crocco & Arantes, Rosa Maria Esteves

Abstract

We describe the relationship between lesion outcome and histopathological hallmarks in susceptible (BALB/c) and resistant (C57BL/6 and IL-4-deficient BALB/c) mouse strains over the course of a 12-week-infection with Leishmania major check for this species in other resources in the ear. The infiltration of mononuclear cells and polymorphonuclear cells occurred within 6 h and mononuclear cells predominated one week post-infection. Permissive intracellular growth of the pathogen was associated with non-healing lesions. In contrast, tissue damage and clearance of the parasite was observed in healing lesions and was associated with inducible nitric oxide synthase expression. The identification of the structural components of tissue reaction to the parasite in this study furthers our understanding of subjacent immune effector mechanisms.

Keywords
Leishmania major - infectious skin diseases - pathology

 
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