Morphobiological, morphometric and ultrastructural characterization of sylvatic Trypanosoma cruzi isolates from Rio de Janeiro state, Brazil

Triatoma vitticeps is a triatomine with geographic distribution restrict to Brazil, which exhibits high prevalence of Trypanosoma cruzi natural infection. Of special epidemiologic concern, this species often invades households in the states of Rio de Janeiro, Minas Gerais and Espírito Santo. The obj...

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Published inBrazilian journal of biology Vol. 79; no. 2; pp. 294 - 303
Main Authors Silva, C Santos da, Carbajal-de-la-Fuente, A L, Almeida, C E, Gonçalves, T C M, Santos-Mallet, J Reis Dos
Format Journal Article
LanguageEnglish
Portuguese
Published Brazil Instituto Internacional de Ecologia 01.04.2019
Subjects
BIOLOGY
Biometrics
Cell differentiation
Differentiation (biology)
Epidemiology
Epimastigotes
Evolution
Geographical distribution
Growth curves
Heterogeneity
Households
Infections
morphobiology
Morphology
Parasites
Parasitology
Protozoa
Rio de Janeiro state
sylvatic isolates
Triatoma vitticeps
Trypanosoma cruzi
Trypomastigotes
ultrastructure
Vertebrates
Brazil
Rio de Janeiro Brazil
Latin America
morphobiology
morfobiologia
estado do Rio de Janeiro
ultraestrutura
Rio de Janeiro state
isolados silvestres
ultrastructure
Trypanosoma cruzi
sylvatic isolates
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Summary:Triatoma vitticeps is a triatomine with geographic distribution restrict to Brazil, which exhibits high prevalence of Trypanosoma cruzi natural infection. Of special epidemiologic concern, this species often invades households in the states of Rio de Janeiro, Minas Gerais and Espírito Santo. The objective of this study was to evaluate morphological and ultrastructural parameters on three T. cruzi isolates obtained from wild T. vitticeps specimens. The growth and cell differentiation of the parasite was evaluated through epimastigote and trypomastigote forms obtained in the growth curves for three distinct isolates. The maximum growth showed differences at the 20th day of the curve. Our in vitro results show a heterogeneity, regarding these features for samples cultivated under the same conditions. Morphometric analyzes based on the shape of epimastigotes and trypomastigotes corroborated such differentiation. These results highlight the need of better understanding the meaning of this diversity under an eco-epidemiological perspective.
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ISSN:1519-6984
1678-4375
1678-4375
DOI:10.1590/1519-6984.181719