992 resultados para Doenças transmissiveis em animais


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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Pós-graduação em Medicina Veterinária - FMVZ

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Pós-graduação em Medicina Veterinária - FMVZ

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The rhodococcosis affects humans and animals. Equine are the most important species for rhodococcosis, which is considered the most debilitating disease in the creation of foals, leading to a mortality rates greater than 50% in this category. The disease is caused by Rhodococcus equi, a bacteria considered as a soil-born opportunistic microorganism, intracellular and ubiquitous. The disease in horses is manifested mainly in the form of pyogranulomatous pneumonia and less often in the form of enteric disorders and / or joint disorders. Transmission occurs mainly by ingestion of contaminated food and water, and inhalation in contaminated environment. The organism has mechanisms of evasion of the immune system, maintain viable in inside phagocytic cells, and induces piogranulomatous infections, leading to lesions of difficult treatment using conventional antimicrobials. Lipophilic drugs with good intracellular activity are required to successful treatment. The conventional treatment for foals is based on the combination of erythromycin and rifampin. However, there is a growing concern about the emergence of resistant strains, which makes increasingly studies on the development of alternative antimicrobials for therapy

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Pós-graduação em Medicina Veterinária - FMVZ

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pythiosis is caused by the oomycetous Pythium insidiosum and affect domestic and wild animals and man. The presence of water and vegetal material is fundamental for its life cycle in nature. The biflagellate zoospore are the infective form of this pathogen. The lesions are generally of granulomatous aspect, which frequently may be contaminated by secondary bacterial infection in skin and subcutaneous tissue. Dissemination to systemic tissues may also occur and it may be due to the spread of the pathogen from cutaneous lesions, as well as a primary source of infection. Clinical signs depend on the affected tissue. Diagnosis of pythiosis is based on the clinical manifestations, histopathological sections and culture of the pathogen. Serological tests may also be employed and more recently molecular biology has been introduced as a sensitive, specific and a rapid method for conclusive diagnosis. Treatment is often difficult and extensive surgery procedures are required, however, depending on the anatomic region and size of the lesion, such procedure is unfeasible and relapses are frequent. Due to the climate changes, which has contributed to increase the incidence of pythiosis, it is necessary the search for new therapeutic protocols