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Ocorrência de infecções por Babesia spp. e Hepatozoon spp. em gatos domésticos (Felis domesticus) do Estado de São Paulo e do Distrito Federal

Authors: Carneiro, Marcella Pires Mendes;

Ocorrência de infecções por Babesia spp. e Hepatozoon spp. em gatos domésticos (Felis domesticus) do Estado de São Paulo e do Distrito Federal

Abstract

O objetivo deste estudo foi avaliar a ocorrência da infecção por parasitas dos gêneros Babesia e Hepatozoon em gatos domésticos, por meio da identificação em esfregaços sangüíneos corados por Giemsa e pela Reação em Cadeia pela Polimerase (PCR). Foram colhidas amostras de sangue de 144 animais, sendo 113 do Estado de São Paulo e 31 do Distrito Federal. Os animais foram escolhidos aleatoriamente e não foram feitas distinções quanto à raça, idade, sexo ou estado de saúde dos gatos. A maioria dos animais habitava áreas rurais (52,8%) e, quando urbanas (47,2%), eram animais com livre acesso à rua. A extração do DNA das amostras de sangue foi realizada utilizando o GFXTM Genomic Blood DNA Purification Kit, de acordo com as recomendações do fabricante. Para a realização da PCR foram utilizados os oligonucleotídeos PiroA1 e PiroB para Babesia spp. e HepF e HepR para Hepatozoon spp. Pela análise dos esfregaços sangüíneos foram observadas estruturas intraeritrocitárias semelhantes à piroplasmídeos em cinco (3,47%) gatos, porém, apenas um (0,69%) foi positivo pela PCR para Babesia sp., com banda visualizada em 450pb. O seqüenciamento dessa amostra positiva demonstrou 100% de similaridade com Babesia canis vogeli já caracterizada no Brasil. Todas as amostras foram negativas para Hepatozoon spp., tanto pelo esfregaço quanto pela PCR. Por meio dos resultados obtidos neste estudo pode-se concluir que a freqüência desses hemoparasitas em gatos domésticos nessas regiões é muito baixa e técnicas moleculares são necessárias para o correto diagnóstico dessas hemoparasitoses nesses animais.

The purpose of this study was to evaluate the occurrence of infection by parasites of the genus Babesia and Hepatozoon in domestic cats. Infection was identified using Giemsa stained blood smears and the Polymerase Chain Reaction (PCR). The blood samples were collected from one hundred and forty four (144) cats that resided in São Paulo (113) state and the Federal District (31). The DNA extraction of blood samples was performed with the GFXTM Genomic Blood DNA Purification Kit, according to the manufacturer's instructions. The PiroA1 and PiroB primers for Babesia spp. and the HepF and HepF primers for Hepatozoon spp were used for PCR execution. Blood smear examinations, demonstrated the presence of intraerythrocytic structures resembling piroplasmids in five (3.47%) cats, however, only one (0.69%) was positive for Babesia sp., by PCR, with a band visualized at 450 bp. The sequencing of this positive sample demonstrated close identity with Babesia canis vogeli, which has already been characterized in Brazil. All blood smear and PCR samples were negative for Hepatozoon spp. The frequency of these hemoparasites in domestic cats in Brazil is very low and molecular techniques are necessary for the correct diagnostic of these hemoparasitosis in these animals.

Pós-graduação em Medicina Veterinária - FMVZ

Universidade Estadual Paulista (UNESP)

Country
Brazil
Keywords

Hemoparasitosis, Cats - Hemoparasites, Gato - Doenças, Babesiose, Hemoparasitoses

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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