Trypanosoma cruzi strains from triatomine collected in Bahia and Rio Grande do Sul, Brazil

Authors

  • Aline Rimoldi Ribeiro Universidade Estadual de Campinas; Instituto de Biologia; Departamento de Parasitologia
  • Vagner José Mendonça Universidade Estadual Júlio de Mesquita Filho; Faculdade de Ciências Farmacêuticas; Departamento de Ciências Biológicas
  • Renata Tomé Alves Universidade de São Paulo; Faculdade de Ciências Farmacêuticas; Departamento de Análises Clínicas Toxicológicas e Bromatológicas
  • Isabel Martinez Universidade Estadual Júlio de Mesquita Filho; Faculdade de Ciências Farmacêuticas; Departamento de Ciências Biológicas
  • Renato Freitas de Araújo Secretaria Estadual de Saúde da Bahia
  • Fernanda Mello Secretaria de Saúde do Estado do Rio Grande do Sul
  • João Aristeu da Rosa Universidade Estadual Júlio de Mesquita Filho; Faculdade de Ciências Farmacêuticas; Departamento de Ciências Biológicas

DOI:

https://doi.org/10.1590/S0034-8910.2014048004719

Abstract

OBJECTIVE Collection of triatomines in domestic, peridomestic and sylvatic environments in states of Bahia and Rio Grande do Sul, Northeastern and Southern Brazil respectively, and isolation of Trypanosoma cruzi strains. METHODS First, the captured triatomines were identified using insect identification keys, then their intestinal content was examined by abdominal compression, and the samples containing trypanosomatid forms were inoculated in LIT medium and Swiss mice. RESULTS Six triatomine species were collected in cities in Bahia, namely Panstrongylus geniculatus (01), Triatoma melanocephala (11), T. lenti (94), T. pseudomaculata (02), T. sherlocki (26) and T. sordida (460), and two in cities in Rio Grande do Sul, namely T. circummaculata (11) and T. rubrovaria (115). Out of the specimens examined, T. cruzi was isolated from 28 triatomine divided into four different species: T. melanocephala (one), T. lenti (one), T. rubrovaria (16) and T. sordida (10). Their index of natural infection by T. cruzi was 6.4%. CONCLUSIONS The isolation of T. cruzi strains from triatomines found in domestic and peridomestic areas shows the potential risk of transmission of Chagas disease in the studied cities. The maintenance of those T. cruzi strains in laboratory is intended to promote studies that facilitate the understanding of the parasite-vector-host relationship.

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Published

2014-04-01

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Section

Original Articles

How to Cite

Trypanosoma cruzi strains from triatomine collected in Bahia and Rio Grande do Sul, Brazil . (2014). Revista De Saúde Pública, 48(2), 295-302. https://doi.org/10.1590/S0034-8910.2014048004719