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| Format: | Artículo científico |
| Language: | en |
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Universidade Estadual de Maringá
2006
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| Online Access: | https://www.redalyc.org/articulo.oa?id=187115767013 |
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Table of Contents:
- Weak relation between genetic and biological diversity of natural populations of Trypanosoma cruzi Miriam Hitomi Andó Marta Bértoli Max Jean de Ornelas Toledo Mônica Lúcia Gomes Terezinha Aparecida Guedes Silvana Marques de Araújo Biología Trypanosoma cruzi genetic diversity biological diversity This paper studies the relation between genetic and biological diversity of natural populations of Trypanosoma cruzi (in Parana State, Brazil) isolated from humans (H), classified as T. cruzi II, and from sylvatic reservoirs (G) and triatomines (T), classified as T. cruzi I. Twenty-five biological parameters were evaluated concerning the kinetic of growth and of etacyclogenesis in mediums LIT and M16, to the infectivity to BALB/c mice, and to the susceptibility to benznidazole. The data support the conclusion of a weak relation between genetic distance and biological diversity using strains. The statistical comparison of the means of each parameter, with regard to the different hosts, showed that group T. cruzi II (H) was significantly different from group T. cruzi I (G and/or T) in 13 of the 25 parameters studied: group H differed from G and T in three parameters, and from G or T in 10 parameters. The major differences found in those parameters were related to the kinetic of growth and of metacyclogenesis. One biological implication from these differences is that the lowest growth of parasite observed in group T. cruzi II (H) makes parasitological diagnoses more difficult and provides lower pathogenicity for mice. 2006 artículo científico 1679-9283 https://www.redalyc.org/articulo.oa?id=187115767013 en http://www.redalyc.org/revista.oa?id=1871 Acta Scientiarum. Biological Sciences application/pdf Universidade Estadual de Maringá Acta Scientiarum. Biological Sciences (Brasil) Num.2 Vol.28