Canine visceral leishmaniosis in an area of fishing tourism, Bonito Municipality, Mato Grosso do Sul, Central-West Brazil/Leishmaniose visceral canina em area de turismo pesqueiro, municipio de Bonito, Mato Grosso do Sul, Centro-Oeste do Brasil

The study aimed to investigate Leishmania infection in a population of dogs (92 animals) in a fishing area of Bonito Municipality, and evaluate comparatively the serological methods used, immunoenzymatic assay (ELISA), indirect immunofluorescence antibody test (IFAT), and rapid Dual Path-Platform te...

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Published in:Ciência rural Vol. 48; no. 3
Main Authors: Brilhante, Andreia Fernandes, Dorval, Maria Elizabeth Cavalheiros, Galati, Eunice Aparecida Bianchi, de Castro, Vivianne de Oliveira Landgraf, Rocca, Maria Elizabeth Ghizzi, Facco, Gilberto Goncalves, de Souza, Celeste da Silva Freitas, Nunes, Vania Lucia Brandao
Format: Journal Article
Language:English
Published: Universidade Federal de Santa Maria 01-03-2018
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Summary:The study aimed to investigate Leishmania infection in a population of dogs (92 animals) in a fishing area of Bonito Municipality, and evaluate comparatively the serological methods used, immunoenzymatic assay (ELISA), indirect immunofluorescence antibody test (IFAT), and rapid Dual Path-Platform test (DPP[R]). Blood and aspirate of bone marrow samples were used and parasitological investigation was also performed, such as parasite isolation in Neal, Novy, Nicolle (NNN) medium culture, Woo technique, Giemsa stained smears and specific identification by polymerase chain reaction (PCR). IFAT revealed 56/92 seropositive, the ELISA 8/92 and the DPP[R] 41/92. Regarding the agreement between the serological tests by the Kappa index, there was a slight agreement between ELISA/IFAT and ELISA/DPP[R], and fair agreement in IFAT/DPP[R]. The NNN culture was positive in three out of 21 dogs, and identified by PCR as Leishmania infantum chagasi. No samples were positive by the Woo technique. Our results showed low agreements between the serological tests recommended by the Brazilian Ministry of Heath, and it is necessary to associate other diagnostic techniques, such as parasitological tests and PCR, to increase the sensitivity for canine visceral leishmaniosis diagnosis, mainly regarding asymptomatic dogs in endemic areas. Key words: domestic dogs, serodiagnosis, ecotourism. O estudo teve como objetivo verificar a infeccao por Leishmania em uma populacao de caes (n=92 animais) de uma area de turismo de pesca no municipio de Bonito e avaliar comparativamente os metodos sorologicos utilizados, ensaio imunoenzimatico (ELISA), reacao de imunofluorescencia indireta (RIFI) e teste rapido de plataforma dupla (DPP[R]). Testes parasitologicos tambem foram realizados, como o isolamento do parasita em meio de cultura Neal, Novy, Nicolle, tecnica de Woo, esfregacos em laminas coradas com Giemsa e identificacao especifica pela reacao em cadeia da polimerase (PCR). A RIFI revelou sorologia positiva de 56/92, ELISA 8/92 e DPP[R] 41/92. Quanto a concordancia entre os testes sorologicos pelo indice Kappa, houve um ligeiro acordo entre ELISA/RIFI e ELISA/DPP[R], e uma concordancia razoavel entre RIFI/DPP[R]. A cultura NNN foi positiva em tres caes, e identificada por PCR como Leishmania infantum chagasi. Nenhuma amostra foi positiva pela tecnica de Woo. Nossos resultados mostraram baixas concordancias entre os testes sorologicos recomendados pelo Ministerio da Saude, sendo necessario associar a outras tecnicas de diagnostico, como testes parasitologicos e PCR, para aumentar a sensibilidade ao diagnostico de leishmaniose visceral canina, principalmente, com relacao aos caes assintomaticos em areas endemicas. Palavras-chave: caes domesticos, sorodiagnostico, ecoturismo.
ISSN:0103-8478
DOI:10.1590/0103-8478cr20170332