Ocorrência de Leishmania spp. em felinos do município de Araçatuba, SP

Abstract

ResumoEste trabalho teve como objetivo comparar a ocorrência de Leishmania spp. em gatos por dois métodos (citológico e sorológico), bem como associar a ocorrência deste protozoário com as variáveis sexo, idade e raça. Amostras séricas de 283 felinos domésticos foram testadas pela Reação de Imunofluorescência Indireta (RIFI), e o exame parasitológico direto de linfonodos também foi realizado para a verificação da positividade para Leishmania spp. Ocorrência de 0,7% (2/283) foi observada nos felinos examinados, por meio de imprint de linfonodos e nenhum animal apresentou títulos de anticorpos para Leishmania spp. As duas fêmeas positivas eram sem raça definida, sendo uma jovem e outra adulta. Por meio dos resultados obtidos, não foi constatada diferença estatisticamente significante em relação às variáveis sexo, raça e idade nos gatos desta pesquisa (p > 0,05). Ocorrência de Leishmania spp. nos gatos deste estudo foi baixa. Devido a esta baixa incidência sugere-se que estes não assumem importância epidemiológica na área do estudo.Palavras-chave: Leishmania spp., gato, sorologia, linfonodos, imprint. AbstractThis study had the purpose to compare the occurrence of Leishmania spp. in felines through two methods (cytological and serological), as well as to associate the occurrence of this protozoan with the sex, age and breed variables. Serum samples from 283 domestic felines were processed by means of Indirect Immunofluorescence Reaction (IIR), and the direct parasitological test for linfonodes was also carried out in order to verify positivity for Leishmania spp. Occurrence of 0.7% (2/283) was observed in the tested felines by means of linfonode imprinting and no animal showed title of antibodies for Leishmania spp. The two positive females were mongrel, a young female and an adult female feline. From the obtained results, no statistically significant difference was observed as regards the sex, breed and age variables in this research (p > 0.05). Occurrence of Leishmania spp. in the cats of this study was low. Such low incidence suggests that these hosts has no epidemiological relevance in the study area.

Natural Infection by Leishmania infantum in domestic cats (Felis catus) in a municipality of moderate transmission in the Brazilian semi-arid region

“…The other characteristics of the clinical lesions were similar to other reports of leishmaniasis in cats (Bonfante-Garrido et al, 1996;Souza et al, 2009;Trainor et al, 2010;Pennisi et al, 2015;Alves-Martin et al, 2017). There are reports that no clinical sign was observed in serologically positive felines (Costa et al, 2010;Bresciani et al, 2010;Alves-Martin et al, 2017). In other words, in cats, the symptomatology may present a similar course to the visceral leishmaniasis in dogs, going from apparently healthy animals, passing by oligosymptomatic, up to severe stages of the disease (Akhtardanesh et al, 2017;Gontijo & Melo, 2004).…”

“…The visualization of the amastigote forms of the aspirates of the lesions and/or lymph nodes was positive for the majority of the reports in symptomatic cats (Bonfante-Garrido et al, 1996;Souza et al, 2009;Bresciani et al, 2010;Sousa et al, 2019) and, as in the dogs, the lesions seem to be due to the immune response against the parasites (Hervás et al, 2001). However, the negative cytological test of the bone marrow, spleen and live has already been reported (Grevot et al, 2005).…”

Serological and molecular investigation of Leishmania spp. infection in cats from an area endemic for canine and human leishmaniasis in Northeast Brazil

“…The low number of cats seropositive for Leishmania spp. in comparison with dogs has been shown by other research groups (SOLANO-GALLEGO et al, 2007;BRESCIANI et al, 2010;SOBRINHO et al, 2012;CARDIA et al, 2013), and this can be attributed to the natural resistance of the cats against the protozoan, due to a more effective cellular immune response (SOLANO-GALLEGO et al, 2007). Moreover, the use of different methodologies and non-standardized protocols could also be responsible for these frequencies (SOLANO-GALLEGO et al, 2011).…”

“…In Brazil, studies on FeL using serological, parasitological, and molecular methods revealed that infection frequencies varied from 0% to 54% (BRESCIANI et al, 2010;VIDES et al, 2011;CARDIA et al, 2013;BRAGA et al, 2014;SILVA et al, 2014;SOUSA et al, 2014;OLIVEIRA et al, 2015;GODOI et al, 2016;MENDONÇA et al, 2017;COURA et al, 2018;MATOS et al, 2018). Only a small fraction of these studies was performed in the Northeast region that was home to 82.5% of all reported cases of human leishmaniasis in Brazil between 1980 and 2005, making this region an area of epidemiological relevance for this disease in Brazil (MAIA-ELKHOURY et al, 2008;SILVA et al, 2014;MENDONÇA et al, 2017).…”

Fratura Apical De Sesamóide Proximal Em Equino: Relatos De Caso

“…Neste mesmo trabalho pode-se afirmar que os gatos são infecciosos ao vetor e são mais propícios a infecção em áreas endêmicas a FVL foi confirmada através do xenodiagnóstico por Silva e colaboradores(2010).Os cães apresentam resposta humoral, nos gatos a resposta imune é celular, o que conferem a esta espécie um grau mais alto de resistência à infecção, o que pode justificar o pequeno número de gatos infectados e sintomáticos (COSTA et al,2010; NOÉ et al, 2015. Respostas imunológicas espécie específica proporcionam a proteção natural felina à infecção por Leishmania spp., são assintomáticos na ausência de outra doença ou estado de imunossupressão(Vides et al ;2011e Bresciani et al 2010Pennisi, 2015).…”