3-Hydroxy Kynurenine Treatment Controls T. cruzi Replication and the Inflammatory Pathology Preventing the Clinical Symptoms of Chronic Chagas Disease.

KNUBEL, C; MARTINEZ, FERNANDO; ACOSTA E,; ALTAMIRANO, ANDRES; RIVAROLA, WALTER; DIAZ LUJAN, C; FRETES, R; CERVI, LAP; MOTRAN, CC

PUBLIC LIBRARY SCIENCE

Año: 2011 vol. 6 p. 26550 - 26550

ackground: 3-Hydroxy Kynurenine (3-HK) administration during the acute phase of Trypanosoma. cruzi infection decreases the parasitemia of lethally infected mice and improves their survival. However, due to the fact that the treatment with 3-HK is unable to eradicate the parasite, together with the known proapoptotic and immunoregulatory properties of 3-HK and their downstream catabolites, it is possible that the 3-HK treatment is effective during the acute phase of the infection by controlling the parasite replication, but at the same time suppressed the protective T cell response before pathogen clearance worsening the chronic phase of the infection. Therefore, in the present study, we investigated the effect of 3-HK treatment on the development of chronic Chagas? disease. Principal Findings: In the present study, we treated mice infected with T. cruzi with 3-HK at day five post infection during 5 consecutive days and investigated the effect of this treatment on the developme