RESUMO

The sheep industry, a very important economic activity in Paraná State, can be affected by gastrointestinal parasites. The aim of the present study was to evaluate the occurrence of gastrointestinal parasites in sheep raised in the north region of Paraná State. Fecal samples were collected from 69 animals and processed by flotation and sedimentation techniques. Parasites were observed in 63 (91.3%) animals. The most frequent parasites were strongylid eggs (81.2%), followed by Eimeria sp (42%) and Giardia duodenalis (10.1%). To our knowledge, this is the first report of Giardia duodenalis in sheep raised in Parana State. These results indicate that sanitary management must be improved in order to control infections by these parasites and increase the productivity.(AU)

A ovinocultura, uma atividade econômica muito importante no Estado do Paraná, pode ser afetada por parasitas gastrointestinais. O objetivo do presente estudo foi avaliar a ocorrência de parasitas gastrointestinais em ovinos criados na região norte do Paraná. Amostras fecais foram coletadas de 69 animais e processadas por técnicas de flutuação e sedimentação. Encontraram-se parasitas em 63 (91,3%) animais. Os parasitas mais freqüentes foram os ovos de estrongilideos (81,2%), seguidos por Eimeria sp (42%) e Giardia duodenalis (10,1%). Até onde se pôde apurar, este é o primeiro relato de Giardia duodenalis em ovinos criados no Paraná. Esses resultados indicam que o manejo sanitário deve ser aprimorado para controlar infecções por esses parasitas e aumentar a produtividade.(AU)

Assuntos

RESUMO

The sheep industry, a very important economic activity in Paraná State, can be affected by gastrointestinal parasites. The aim of the present study was to evaluate the occurrence of gastrointestinal parasites in sheep raised in the north region of Paraná State. Fecal samples were collected from 69 animals and processed by flotation and sedimentation techniques. Parasites were observed in 63 (91.3%) animals. The most frequent parasites were strongylid eggs (81.2%), followed by Eimeria sp (42%) and Giardia duodenalis (10.1%). To our knowledge, this is the first report of Giardia duodenalis in sheep raised in Parana State. These results indicate that sanitary management must be improved in order to control infections by these parasites and increase the productivity.

A ovinocultura, uma atividade econômica muito importante no Estado do Paraná, pode ser afetada por parasitas gastrointestinais. O objetivo do presente estudo foi avaliar a ocorrência de parasitas gastrointestinais em ovinos criados na região norte do Paraná. Amostras fecais foram coletadas de 69 animais e processadas por técnicas de flutuação e sedimentação. Encontraram-se parasitas em 63 (91,3%) animais. Os parasitas mais freqüentes foram os ovos de estrongilideos (81,2%), seguidos por Eimeria sp (42%) e Giardia duodenalis (10,1%). Até onde se pôde apurar, este é o primeiro relato de Giardia duodenalis em ovinos criados no Paraná. Esses resultados indicam que o manejo sanitário deve ser aprimorado para controlar infecções por esses parasitas e aumentar a produtividade.

Assuntos

RESUMO

Tritrichomonas foetus is a parasite that has been definitively identified as an agent of trichomonosis, a disease characterized by chronic diarrhea. T. foetus colonizes portions of the feline large intestine, and manifests as chronic and recurrent diarrhea with mucus and fresh blood, which is often unresponsive to common drugs. Diagnosis of a trichomonad infection is made by either the demonstration of the trophozoite on a direct fecal smear, fecal culture and subsequent microscopic examination of the parasite, or extraction of DNA in feces and amplification by the use of molecular tools. T. foetus is commonly misidentified as other flagellate protozoa such as Giardia duodenalis and Pentatrichomonas hominis. Without proper treatment, the diarrhea may resolve spontaneously in months to years, but cats can remain carriers of the parasite. This paper intends to serve as a source of information for investigators and veterinarians, reviewing the most important aspects of feline trichomonosis, such as trichomonad history, biology, clinical manifestations, pathogenesis, world distribution, risk factors, diagnosis, and treatment.

Assuntos

RESUMO

Abstract Tritrichomonas foetus is a parasite that has been definitively identified as an agent of trichomonosis, a disease characterized by chronic diarrhea. T. foetus colonizes portions of the feline large intestine, and manifests as chronic and recurrent diarrhea with mucus and fresh blood, which is often unresponsive to common drugs. Diagnosis of a trichomonad infection is made by either the demonstration of the trophozoite on a direct fecal smear, fecal culture and subsequent microscopic examination of the parasite, or extraction of DNA in feces and amplification by the use of molecular tools. T. foetus is commonly misidentified as other flagellate protozoa such as Giardia duodenalis and Pentatrichomonas hominis. Without proper treatment, the diarrhea may resolve spontaneously in months to years, but cats can remain carriers of the parasite. This paper intends to serve as a source of information for investigators and veterinarians, reviewing the most important aspects of feline trichomonosis, such as trichomonad history, biology, clinical manifestations, pathogenesis, world distribution, risk factors, diagnosis, and treatment.

Resumo Tritrichomonas foetus é um parasito que foi identificado definitivamente como agente de tricomoníase, caracterizada por diarreia crônica. T. foetus coloniza porções do intestino grosso dos felinos e se manifesta como uma diarreia crônica e recorrente, com muco e sangue, geralmente irresponsiva às drogas comumente usadas no tratamento. O diagnóstico da infecção por tricomonadídeos é feito pela demonstração de trofozoítos no exame direto de fezes frescas, cultura fecal e subsequente exame microscópico ou extração do DNA do parasito na amostra fecal e amplificação, utilizando-se técnicas moleculares. T. foetus é comumente confundido com outros protozoários flagelados, como Giardia duodenalis e Pentatrichomonas hominis. Sem tratamento adequado, a diarreia pode cessar espontaneamente em meses ou anos, porém os gatos podem permanecer portadores do parasito. Esse artigo pretende servir como fonte de informação para pesquisadores e veterinários, revisando os mais importantes aspectos da tricomoníase felina, como histórico, biologia, manifestações clínicas, patogênese, distribuição mundial, fatores de risco, diagnóstico e tratamento.

Assuntos

RESUMO

Tritrichomonas foetus is a parasite that has been definitively identified as an agent of trichomonosis, a disease characterized by chronic diarrhea. T. foetus colonizes portions of the feline large intestine, and manifests as chronic and recurrent diarrhea with mucus and fresh blood, which is often unresponsive to common drugs. Diagnosis of a trichomonad infection is made by either the demonstration of the trophozoite on a direct fecal smear, fecal culture and subsequent microscopic examination of the parasite, or extraction of DNA in feces and amplification by the use of molecular tools. T. foetus is commonly misidentified as other flagellate protozoa such as Giardia duodenalis and Pentatrichomonas hominis. Without proper treatment, the diarrhea may resolve spontaneously in months to years, but cats can remain carriers of the parasite. This paper intends to serve as a source of information for investigators and veterinarians, reviewing the most important aspects of feline trichomonosis, such as trichomonad history, biology, clinical manifestations, pathogenesis, world distribution, risk factors, diagnosis, and treatment.(AU)

Tritrichomonas foetus é um parasito que foi identificado definitivamente como agente de tricomoníase, caracterizada por diarreia crônica. T. foetus coloniza porções do intestino grosso dos felinos e se manifesta como uma diarreia crônica e recorrente, com muco e sangue, geralmente irresponsiva às drogas comumente usadas no tratamento. O diagnóstico da infecção por tricomonadídeos é feito pela demonstração de trofozoítos no exame direto de fezes frescas, cultura fecal e subsequente exame microscópico ou extração do DNA do parasito na amostra fecal e amplificação, utilizando-se técnicas moleculares. T. foetus é comumente confundido com outros protozoários flagelados, como Giardia duodenalis e Pentatrichomonas hominis. Sem tratamento adequado, a diarreia pode cessar espontaneamente em meses ou anos, porém os gatos podem permanecer portadores do parasito. Esse artigo pretende servir como fonte de informação para pesquisadores e veterinários, revisando os mais importantes aspectos da tricomoníase felina, como histórico, biologia, manifestações clínicas, patogênese, distribuição mundial, fatores de risco, diagnóstico e tratamento.(AU)

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The clinical importance of heartworm infection in cats has indeed increased in recent years. Dirofilaria immitis infection has been reported worldwide in cats and continues to be regularly diagnosed in endemic areas. The diagnosis can be overlooked easily, especially in Brazil, where there is not a specific feline immunodiagnostic test, forcing the veterinarians to use a test made for the canine host. In 2015, a 10-year-old female neutered cat was diagnosed with D. immitis using an antigen serological test, based on imunocromatography and designed for dogs. The modified Knott test was negative. As the disease progressed, the cat showed clinical signals of respiratory distress, such as dyspnoea and polypnea in addition to prostration and emaciation, and died a few weeks after the diagnosis. During necropsy, one adult nematode was found in the pulmonary artery. D. immitis infection was confirmed by molecular amplification, performed in the worm fragment. This is the first report of serological diagnosis of feline dirofilariasis in Brazil. A chemoprophylaxis routine in cats should be done, as is done in dogs from endemic areas.

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CASE SERIES SUMMARY: Chronic diarrhea is a common and recurring problem in feline medicine. Intestinal trichomonads have been reported as causative agents of diarrhea in cats. While Pentatrichomonas hominis is considered commensal, Tritrichomonas foetus has been found to cause feline large bowel diarrhea in cats. In our report, two young cats infected with the feline leukemia virus (FeLV) and presenting with chronic diarrhea were identified as having trichomonads in their feces, based on direct examination and fecal culture. Molecular assays (PCR and DNA sequencing) revealed that the parasite involved was P hominis, not T foetus, as was suspected. The animals had already been subjected to ineffective therapy with metronidazole, and after the use of ronidazole, their feces became dry and formed. RELEVANCE AND NOVEL INFORMATION: This case report describes P hominis infection as a possible cause of chronic diarrhea in two young cats also infected by FeLV. The parasite was probably resistant to metronidazole, the drug of choice in the literature, and sensitive to ronidazole. Although considered commensal, P hominis infection should be evaluated as a differential diagnosis in cats with chronic diarrhea, especially those that are immunocompromised. Moreover, a combination of techniques such as direct examination and/or fecal culture and PCR is essential for an accurate diagnosis of P hominis infection.

RESUMO

Cats, as definitive host, play an important role in the transmission of Toxoplasma gondii. This study aimed to establish the seroprevalence of anti-T. gondii immunoglobulins G and M, and determine the frequency of oocysts in the feces of the domestic cat population in Rio de Janeiro, Brazil. We also aimed to study the association between T. gondii infection and age, sex, breed, lifestyle, diet and retroviral infection. A total of 108 cats were included in the study and fecal samples of 54 of those cats were obtained. Only 5.6% of the cats were seropositive for anti-T. gondii immunoglobulins using the indirect hemagglutination test. None of the 54 cats presented oocysts in their fecal samples. Although not statistically significant, males, mixed-breed, free-roaming and cats aged two years and older were found to be more exposed. Age, lifestyle and the use of litter boxes were found to play an important role as risk factors. Anemia and retroviral infections were independent of T. gondii infection. No antibodies were detected in the majority of cats (94.4%), indicating that those cats had never been exposed to the parasite and, therefore, once infected, they could present the risk of shedding large numbers of oocysts into the environment.

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RESUMO

Cats, as definitive host, play an important role in the transmission of Toxoplasma gondii. This study aimed to establish the seroprevalence of anti-T. gondii immunoglobulins G and M, and determine the frequency of oocysts in the feces of the domestic cat population in Rio de Janeiro, Brazil. We also aimed to study the association between T. gondii infection and age, sex, breed, lifestyle, diet and retroviral infection. A total of 108 cats were included in the study and fecal samples of 54 of those cats were obtained. Only 5.6% of the cats were seropositive for anti-T. gondii immunoglobulins using the indirect hemagglutination test. None of the 54 cats presented oocysts in their fecal samples. Although not statistically significant, males, mixed-breed, free-roaming and cats aged two years and older were found to be more exposed. Age, lifestyle and the use of litter boxes were found to play an important role as risk factors. Anemia and retroviral infections were independent of T. gondii infection. No antibodies were detected in the majority of cats (94.4%), indicating that those cats had never been exposed to the parasite and, therefore, once infected, they could present the risk of shedding large numbers of oocysts into the environment.

Os gatos, como hospedeiros definitivos, apresentam um papel fundamental na transmissão do Toxoplasma gondii. Nosso estudo teve como objetivo determinar a presença de imunoglobulinas G e M anti-T. gondii, e a frequência de oocistos nas fezes de uma população de gatos domésticos do Rio de Janeiro, Brasil. Objetivou-se ainda estudar a associação da infecção por T. gondii com a idade, sexo, raça, estilo de vida, dieta e infecção por retrovírus. Um total de 108 gatos foi incluído no estudo e 54 amostras de fezes foram obtidas desses animais. Somente 5,6% dos gatos foram sororreagentes para T. gondii, utilizando-se o teste de hemaglutinação indireta. Nenhum dos 54 gatos apresentou oocistos em suas amostras fecais. Embora sem comprovação estatística, machos, sem raça definida, com acesso livre às ruas e gatos com mais de dois anos de idade tenderam a ser mais expostos ao parasito. Idade, estilo de vida e uso de caixa de areia foram considerados importantes fatores de risco. Anemia e infecção por retrovírus não apresentaram relação com infecção por T. gondii. Não foram detectados anticorpos na maioria dos gatos (94,4%), indicando que esses gatos nunca foram expostos ao parasito e que, se infectados, poderão eliminar grande número de oocistos no ambiente.

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Report of two canine dirofilariosis cases of ectopic location in the state of Rio de Janeiro. This is the first report of erratic migration for this parasitosis in dogs in the state, calling attention to the short period of time between the two cases. The fact that the area is endemic for this parasite, its zoonotic potential and the report of human cases in the state, demonstrates that authorities should be alerted to the control programs of dirofilariosis along with the pathogenic profile of the infections.

Relato de dois casos de dirofilariose canina de localização ectópica no Estado do Rio de Janeiro. Este é o primeiro relato de migração errática para esta parasitose em cães no Estado, e chama a atenção o curto espaço de tempo entre os dois casos. O fato da região ser endêmica para a parasitose, seu caráter zoonótico e o relato de casos humanos no Estado, demonstram que as autoridades competentes devem estar atentas aos programas de controle da dirofilariose assim como no perfil patogênico da infecção.

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RESUMO

Report of two canine dirofilariosis cases of ectopic location in the state of Rio de Janeiro. This is the first report of erratic migration for this parasitosis in dogs in the state, calling attention to the short period of time between the two cases. The fact that the area is endemic for this parasite, its zoonotic potential and the report of human cases in the state, demonstrates that authorities should be alerted to the control programs of dirofilariosis along with the pathogenic profile of the infections.

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