RESUMO
Diseases such as those caused by feline immunodeficiency virus (FIV) and feline leukemia virus (FeLV) represent health problems for cats. Feline leishmaniasis (FL) has been reported in several cities across the country. The objective was to carry out a clinical-epidemiological and laboratory study of FIV, FeLV and FL in cats from shelters in Dourados, Mato Grosso do Sul, Brazil. Blood samples and swabs from the conjunctival and nasal mucosa were obtained from 75 cats, from four animal shelters. Serology for FIV and FeLV was performed. For Leishmania, polymerase chain reaction (PCR) was performed on blood, conjunctiva and nasal mucosa. In the immunochromatographic serological test, seven cats tested positive for FIV and none for FeLV. No samples was positive in PCR for Leishmania. The study showed that despite the presence of human and canine leishmaniasis in the studied region, Leishmania spp. were absent in the cats studied. To avoid an increase in contagion in shelters, it is essential isolate cats with FIV.
Assuntos
Doenças do Gato , Vírus da Imunodeficiência Felina , Leishmaniose , Vírus da Leucemia Felina , Animais , Gatos , Brasil/epidemiologia , Vírus da Imunodeficiência Felina/isolamento & purificação , Vírus da Leucemia Felina/isolamento & purificação , Vírus da Leucemia Felina/genética , Doenças do Gato/epidemiologia , Doenças do Gato/parasitologia , Doenças do Gato/virologia , Prevalência , Masculino , Leishmaniose/veterinária , Leishmaniose/epidemiologia , Feminino , Leishmania/isolamento & purificaçãoRESUMO
Abstract Diseases such as those caused by feline immunodeficiency virus (FIV) and feline leukemia virus (FeLV) represent health problems for cats. Feline leishmaniasis (FL) has been reported in several cities across the country. The objective was to carry out a clinical-epidemiological and laboratory study of FIV, FeLV and FL in cats from shelters in Dourados, Mato Grosso do Sul, Brazil. Blood samples and swabs from the conjunctival and nasal mucosa were obtained from 75 cats, from four animal shelters. Serology for FIV and FeLV was performed. For Leishmania, polymerase chain reaction (PCR) was performed on blood, conjunctiva and nasal mucosa. In the immunochromatographic serological test, seven cats tested positive for FIV and none for FeLV. No samples was positive in PCR for Leishmania. The study showed that despite the presence of human and canine leishmaniasis in the studied region, Leishmania spp. were absent in the cats studied. To avoid an increase in contagion in shelters, it is essential isolate cats with FIV.
Resumo Doenças como as causadas pelos vírus da imunodeficiência felina (FIV) e vírus da leucemia felina (FeLV) representam problemas de saúde para os gatos. A leishmaniose felina (LF) tem sido relatada em diversas cidades do país. O objetivo deste trabalho foi realizar um estudo clínico-epidemiológico e laboratorial de FIV, FeLV e LF em gatos de abrigos em Dourados, Mato Grosso do Sul, Brasil. Amostras de sangue e swabs da mucosa conjuntival e da mucosa nasal foram obtidas de 75 gatos, dos quatro abrigos de animais. Foi feita a sorologia para FIV e FeLV. Para Leishmania foi realizada a reação em cadeia da polimerase (PCR) em sangue, conjuntiva e mucosa nasal. No teste sorológico imunocromatografico, sete gatos apresentaram resultado positivo para FIV e nenhum para FeLV. Nenhuma amostra foi positiva na PCR para Leishmania. O estudo demonstrou que apesar da presença de leishmaniose humana e canina, na região estudada, não foi encontrado Leishmania spp. nos gatos analisados. Para evitar o aumento do contágio em abrigos é fundamental isolar os gatos com FIV.
RESUMO
The dog is the main domestic reservoir of Leishmania and font of infection for the vector, constituting an important host for the transmission of the parasite to humans. Non-invasive collection of swab samples for leishmaniasis diagnosis has been a promising alternative. This study analyzed the positivity of polymerase chain reaction (PCR) for the diagnosis of canine leishmaniasis in conjunctiva samples. DNA extraction was performed using SDS 20% and PCR was performed using 13A/13B primers that amplify 120-bp of Leishmania kDNA. Of the 77 dogs analyzed, 50 (64.93%) had ocular changes: 25 (32.47%) dogs had periocular lesion, 41 (53.25%) dogs had purulent eye discharge, and 17 (22.08%) dogs had both signals. PCR was positive in 35 dogs (45.45%), and there was no significant difference between dogs with and without ocular signals (p=0.4074). PCR positivity was significant higher in dogs without periocular injury (p=0.0018). Conjunctive PCR, a less invasive, fast, and painless collection technique, is indicated to complement the diagnosis, especially in dogs without periocular injury, independent of the presence of purulent eye discharge.
Assuntos
Doenças do Cão , Leishmania infantum , Leishmania , Leishmaniose Visceral , Animais , Túnica Conjuntiva , DNA , DNA de Protozoário/genética , Doenças do Cão/diagnóstico , Cães , Leishmania/genética , Leishmania infantum/genética , Leishmaniose Visceral/veterinária , Reação em Cadeia da Polimerase/veterináriaRESUMO
The dog is the main domestic reservoir of Leishmania and font of infection for the vector, constituting an important host for the transmission of the parasite to humans. Non-invasive collection of swab samples for leishmaniasis diagnosis has been a promising alternative. This study analyzed the positivity of polymerase chain reaction (PCR) for the diagnosis of canine leishmaniasis in conjunctiva samples. DNA extraction was performed using SDS 20% and PCR was performed using 13A/13B primers that amplify 120-bp of Leishmania kDNA. Of the 77 dogs analyzed, 50 (64.93%) had ocular changes: 25 (32.47%) dogs had periocular lesion, 41 (53.25%) dogs had purulent eye discharge, and 17 (22.08%) dogs had both signals. PCR was positive in 35 dogs (45.45%), and there was no significant difference between dogs with and without ocular signals (p=0.4074). PCR positivity was significant higher in dogs without periocular injury (p=0.0018). Conjunctive PCR, a less invasive, fast, and painless collection technique, is indicated to complement the diagnosis, especially in dogs without periocular injury, independent of the presence of purulent eye discharge.(AU)
O cão é o principal reservatório doméstico de Leishmania e também fonte de infecção para o vetor, constituindo um importante hospedeiro para a transmissão do parasita ao homem. A coleta não invasiva de amostras em swab para diagnóstico das leishmanioses tem sido uma alternativa promissora. Este estudo analisou a positividade da reação em cadeia da polimerase (PCR) para o diagnóstico de leishmaniose canina em amostras de conjuntiva. A extração do DNA foi realizada com SDS 20%. A PCR foi realizada com primers 13A/13B que amplificam 120-pb do kDNA de Leishmania. Dos 77 cães analisados, 50 (64,93%) tiveram alterações oculares; 25 (32,47%) cães tiveram uma lesão periocular; 41 (53,25%) tiveram secreção ocular purulenta e 17 (22,08%) cães tiveram ambos os sinais. A PCR foi positiva em 35 cães (45,45%) e não houve diferença significativa em cães com e sem sinais oculares (p = 0,4074). A positividade da PCR foi significativamente maior em cães sem lesão periocular (p = 0,0018). PCR em conjuntiva, uma técnica de coleta menos invasiva, rápida e indolor, é indicada para complementar o diagnóstico, principalmente em cães sem lesão periocular, independentemente da presença de secreção ocular purulenta.(AU)