Autor: |
Souza CF; Laboratório de Doenças Parasitárias, Instituto Oswaldo Cruz (Fiocruz), Avenida Brasil, 4365, Manguinhos, Rio de Janeiro 21040-360, RJ, Brazil., Santos CAD; Centro de Controle de Zoonoses, Prefeitura Municipal de Timóteo, Avenida Acesita, 3230, São José, Timóteo 35182-000, MG, Brazil., Bevilacqua PD; Grupo de Pesquisa Violências, Gênero e Saúde, Instituto René Rachou (Fiocruz), Avenida Augusto de Lima, 1715, Barro Preto, Belo Horizonte 30190-002, MG, Brazil., Andrade Filho JD; Grupo de Estudos em Leishmanioses, Instituto René Rachou (Fiocruz), Avenida Augusto de Lima, 1715, Barro Preto, Belo Horizonte 30190-002, MG, Brazil., Brazil RP; Laboratório de Doenças Parasitárias, Instituto Oswaldo Cruz (Fiocruz), Avenida Brasil, 4365, Manguinhos, Rio de Janeiro 21040-360, RJ, Brazil. |
Abstrakt: |
Leishmaniasis is a group of diseases caused by protozoa of the genus Leishmania and is transmitted by the bite female sand fly. The present work is characterized as a descriptive study in two areas: a forest area located in the Parque Estadual do Rio Doce, and another urban area located in the municipality of Timóteo-MG, with the objective of identifying the presence of Leishmania spp. and the blood source of the collected female sand flies. Part of the females were obtained from the Parque Estadual do Rio Doce, and part was collected using 19 ligth traps distributed in residences of Timóteo. For molecular studies of Leishmania spp. DNA, the ITS1 gene was used, and in the search for blood source, the CytB gene was used and positive samples were sequenced. The study demonstrated that there are at least three species of Leishmania circulating in the study areas: Leishmania ( Viannia ) braziliensis , Leishmania ( Leishmania ) amazonensis , and Leishmania ( V .) guyanensis . Nyssomyia whitmani was the predominant sand fly species in the urban area of Timóteo with a positive diagnosis for the presence of Leishmania braziliensis DNA. We found the presence of blood from Gallus gallus (Chicken) and Sus scrofa (Pig) in sand flies. The present study demonstrates that Leishmania braziliensis is the main agent of cutaneous leishmaniasis in the study area, with the effective participation of Nyssomyia whitmani as the vector and both Gallus gallus and Sus scrofa acting as a food source for female sand flies, and helping maintaining the sand fly life. |