Alterations of intralesional and lymph node gene expression and cellular composition induced by IL-12 administration during leishmaniasis

Autor: L R, Schopf, J, Erickson, L, Hayes, C, Chung, L, Lavigne, J, Sypek
Rok vydání: 2001
Předmět:
Zdroj: Parasite immunology. 23(2)
ISSN: 0141-9838
Popis: Changes in gene expression and cellular distribution in the lymph node and at the site of infection, the footpad, during Leishmania major infection and/or IL-12 administration were evaluated. Otherwise susceptible BALB/c mice given IL-12 are able to resolve infection. Interestingly, iNOS was not induced in the lymph node by IL-12, yet, nitric oxide is critical in the control of leishmaniasis. However, we observed an increase in iNOS at the lesion site in response to IL-12. These results reflect the importance of examining the primary site of infection. We observed no changes in inflammation at the lesion site; however, IL-12 promoted an early inflammatory response in the lymph nodes. IL-12 administration differentially affected both the local and systemic immune response to invading leishmanial parasites. IL-12 induced iNOS at the lesion site and an early granulomatous inflammation in the lymph node; therefore, we hypothesize that these are key events responsible for the resolution of disease in BALB/c mice treated with IL-12.
Databáze: OpenAIRE