____________________________________________________________________________Resumo: Felinos domésticos (Felis silvestris catus) podem ser infectados e parasitados por diferentes patógenos. Entre eles encontram-se o gênero bacteriano Leptospira spp. que podem infectar felinos e acarretar prejuízos a homeostase do animal e consequentemente sobre seu bem-estar. O gato infectado e com uma resposta imune comprometida poderá apresentar principalmente distúrbios renais, mas também sinais hepáticos entre outros. Para controlar, diagnosticar e tratar é necessário que o Médico Veterinário tenha conhecimentos em epidemiologia, diagnóstico e tratamento de leptospirose. O presente estudo objetiva discutir os aspectos epidemiológicos, clínicos e terapeuticos em relação à infecção por Leptospira spp. e da leptospirose. Sabe-se que o gato não é mais considerado uma espécie refratária para leptospirose, portanto, sua epidemiologia e abordagem terapêutica necessita ser mais bem esclarecida. Palavras-chave:Felino, Epidemiologia, Leptospirose, Roedores.Abstract: Domestic felines (Felis silvestris catus) can be infected and parasitized by different pathogens. Among them are the bacterial genus Leptospira spp. which can infect felines and impair the homeostasis of the animal and consequently its well-being. The infected cat with a compromised immune response may present mainly renal disorders, but also hepatic signs among others. To control, diagnose and treat it is necessary that the Veterinarian has knowledge in epidemiology, diagnosis and treatment of leptospirosis. The present study aims to discuss the epidemiological, clinical and therapeutic aspects regarding the infection by Leptospira spp. and leptospirosis. It is known that the cat is no longer considered a refractory species for leptospirosis, therefore, its epidemiology and therapeutic approach needs to be better clarified.

A direct search for parasites were used as the diagnostic test to determine the frequency of Leishmania spp. infection in dogs ( Canis lupus familiaris ) under veterinary clinical care in the city of Araguaína, Tocantins, Brazil. For this approach, lymph node cell samples were collected using needle aspiration from 649 dogs of different breeds and ages. Two hundred and sixty four (40.7%) dogs tested positive for amastigote forms of Leishmania spp. Furthermore, 202 (76.5%) dogs that tested positive showed some clinical sign of disease, while 62 (28.4%) dogs were asymptomatic. Dogs <2 years old or those that lived alongside poultry species in peri-domicile areas had a greater chance of infection (P<0.05). Our results revealed the importance of frequently monitoring leishmaniasis in dogs, and the need to train veterinary professionals who work in high-transmission areas on the clinical diagnosis of canine visceral leishmaniasis.

Visceral leishmaniasis (VL) is expanding in the Brazilian territory. Dogs are considered an important urban reservoir; however, studies have demonstrated the presence of infected cats in some Brazilian states. This report aimed to describe a case of Leishmania (Leishmania) infantum infection in a two-month-old domestic feline from a Brazilian region with a high incidence of human visceral leishmaniasis. The analyzed samples were the cat’s blood, conjunctiva, spleen, liver, popliteal, submandibular and mesenteric lymph nodes, skin, lung and kidney. The diagnostic methods were: parasitological examination, polymerase chain reaction (PCR) and an immunoflurescence antibody test (IFAT). All tissues were positive. The title obtained using the IFAT was 1:160. The animal was negative for feline immunodeficiency virus (FIV) and feline leukemia virus (FeLV). This work addresses the first case of feline leishmaniasis in the state of Tocantins, and reveals data that may contribute to the knowledge of the disease, since it has been shown to be able to develop rapidly and fatally in kittens, with the ability to infect several tissues.

Platynosomiasis is a hepatopathy caused by Platynosomum illiciens(= P. fastosum) (Trematoda: Dicrocoelidae), which occurs mainly in domestic and wild cats in tropical and subtropical areas. The objective of this study was to verify the occurrence of P. illiciens infection in domestic cats in the city of Araguaína, Tocantins, Brazil, using necropsy and coproparasitological tests. Additionally, we aimed to evaluate the use of two different techniques to diagnose P. illiciens infection in domestic cats and verify whether this parasitism was associated with individual feline characteristics. For this, 54 cats of different ages were analyzed. The percentage of infection was 33.3% (CI = 21.1-47.5%), parasite load was 9-509, mean intensity was 151.7, and mean abundance was 50.5 trematodes per animal. The risk of infection was higher for females than for males (OR = 5.00; P = 0.017). The spontaneous sedimentation coproparasitological test demonstrated the greatest sensitivity and specificity in diagnosing P. illiciens. This study is the first to report the occurrence of P. illiciens in cats in the state of Tocantins, northern Brazil.

trabalho licenciado sob licença Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. RESUMOAs leishmanioses são enfermidades de potencial zoonótico causadas pelos protozoários Leishmania spp., que são transmitidos por fêmeas de flebotomíneos infectadas. O presente estudo teve por objetivo descrever o quadro clínico e laboratorial de leishmaniose visceral e relatar o isolamento de Leishmania spp. de baço e fígado em um espécime canino admitido na Clínica Veterinária Universitária da Escola de Medicina Veterinária e Zootecnia da Universidade Federal do Tocantins no ano de 2015. O animal apresentou quadro de claudicação e dor nas articulações calcânea direito e esquerda, na articulação metacarpiana do membro anterior direito e na articulação fêmoro-tíbio-patelar. Foi realizada a punção aspirativa por agulha fina do linfonodo poplíteo e pré-escapular do animal para exame parasitológico direto para Leishmania spp. Após a confirmação da presença de formas amastigotas de Leishmania spp. no exame parasitológico, o animal foi submetido à eutanásia e necropsia. Foi ainda realizado o diagnóstico molecular pela técnica de reação em cadeia da polimerase, constatando a infecção por Leishmania (Leishmania) infantum chagasi. Amostras coletadas de baço e fígado foram inoculadas em Meio Grace, apresentando crescimento significativo de formas promastigotas de Leishmania sp. após quatro dias de incubação. Portanto, observou-se a presença de quadro de poliartrite em paciente canino no município de Araguaína e que as técnicas parasitológicas, moleculares e microbiológicas podem ser utilizadas no diagnóstico da leishmaniose visceral em cães.

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