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Trypanosoma cruzi infection patterns in intact and athymic mice of susceptible and resistant genotypes

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Trypanosoma cruzi infection patterns in intact and athymic mice of susceptible and resistant genotypes.pdf(2.71 MB)
Date
2002
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Authors
Gonçalves da Costa, S.C. ; Calabrese, K.S. ; Zaverucha do Valle, T. ; Lagrange, P.H.
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Publisher
Murcia : F. Hernández
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DOI
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info:eu-repo/semantics/article
Description
Abstract
Inbred strains of mice inoculated with the T. cruzi Y strain behaved as susceptible (A/J, C3H/HeN), intermediate (BALB/c) or relatively resistant (C57BL/6) with respect to the magnitude of parasitaemia and mortality rate. C57BL/10 mice were susceptible in relation to parasitaemia but resistant when mortality was analyzed. Infection with T. cruzi CL strain presented the same results, except for C57BL/6 which behaved as susceptible mice. Athymic mice of various backgrounds revealed no differences in susceptibility, presenting the same dramatic parasitaemia, tissue colonization pattern and no inflammatory reaction in any of the tissues studied. Infection of euthymic and athymic BALB/c mice elicited the production of parasite-specific antibodies, which reached similar levels on the first 9 days but differed after day 13. Serum transfer experiments in BALB/c mice did not show great differences in parasitaemia but altered T. cruzi polymorphism reducing the slender forms in athymic mice. Histopathology of athymic BALB/c mice showed the same tissue tropism when infected either with T. cruzi Y or CL strain.
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Susceptibility , Resistance
Citation
URI
http://hdl.handle.net/10201/20806
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Histology and histopathology Vol.17, nº 3 (2002)
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