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Title: Primeiro encontro do Triatoma costalimai naturalmente infectado pelo Trypanosoma cruzi : estudo de aspectos biológicos da amostra isolada
Other Titles: First finding of Triatoma costalimai naturally infected by Trypanosoma cruzi : study of biological aspects of the isolated sample
Authors: Mello, Dalva A.
Borges, Monamaris M.
Assunto:: Triatoma
Trypanosoma cruzi
Issue Date: Mar-1981
Publisher: Instituto Oswaldo Cruz, Ministério da Saúde
Citation: MELLO, Dalva A.; BORGES, Monamaris M. Primeiro encontro do Triatoma costalimai naturalmente infectado pelo Trypanosoma cruzi: estudo de aspectos biológicos da amostra isolada. Memórias do Instituto Oswaldo Cruz, Rio de Janeiro, v. 76, n. 1, p. 61-69, jan./mar. 1981. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02761981000100007&lng=en&nrm=iso>. Acesso em: 16 nov. 2017. doi: http://dx.doi.org/10.1590/S0074-02761981000100007.
Abstract: Uma amostra de T. cruzi foi isolada pela primeira vez de um exemplar do Triatoma costalimai, capturado no município de Mambai, Goiás. Estudos experimentais sobre infectividade e virulência foram conduzidos em triatomíneos, Calomys callosus (Rodentia) e camundongos albinos. Cultivo "In Vitro" da amostra isolada foi obtido com sucesso utilizando-se o meio LIT. As mensurações realizadas em tripomastigotas sanguícolas deram os seguintes resultados (mcg): comprimento total - 16,4 (± 1,1); flagelo livre - 4,9 (± 1,1); largura - 2,8 (± 0,6); distância NA - 4,8 (± 0,6); distância NP - 6,0 (± 0,5) e Indice nuclear 1,3.
Abstract: Tripanosoma cruzi is for the first time recorded infecting Triatoma costalimai captured in Mambaí couty, state of Goiás, Brasil. The isolated strain is easily cultivated on LIT medium. The above T. cruzi strain was inoculated in mice and in Calomys callosus (Rodentia). The infection can be considered mild in those animals. The prepatent period was 9,4 days for mice and 4,8 days for C. callosus. No lethality for C. callosus was observed during the period of observations. The maxima observed parasitemia was: 366.6/5 [cubic milimeters] for mice and 3,750/5 [cubic milimeters] for C. callosus. Pseudocysts were found in muscles cells of both infected rodent species. Cross-immunity tests showed that a previous infection gives resistance against reinoculation with a virulent T. cruzi strain. Nymphs of Dipetalogaster maximus, Rhdnius neglectus and T. infestans fed on infected animals acquired the infection.
Licença:: Memórias do Instituto Oswaldo Cruz - All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License (CC BY NC 4.0). Fonte: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02761981000100007&lng=en&nrm=iso. Acesso em: 16 nov. 2017.
DOI: http://dx.doi.org/10.1590/S0074-02761981000100007
Appears in Collections:FMD - Artigos publicados em periódicos e preprints

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