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Wouters ATB, Wouters F, Boabaid FM, Watanabe TTN, Fredo G, Varaschin MS, Driemeier D. Brain lesions associated with acute toxic hepatopathy in cattle. J Vet Diagn Invest 2017; 29:287-292. [PMID: 28363257 DOI: 10.1177/1040638717699242] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Samples of the liver, telencephalon, brainstem, and cerebellum were obtained from 22 bovids suffering from spontaneous or experimental acute toxic liver disease. Perreyia flavipes larvae, and leaves of Cestrum corymbosum, Cestrum intermedium, Dodonaea viscosa, Trema micrantha, and Xanthium cavanillesii were the causal agents in the disorders studied. Hematoxylin and eosin and periodic acid-Schiff staining, as well as anti-S100 protein (anti-S100), anti-glial fibrillary acidic protein (anti-GFAP), and anti-vimentin immunostaining were used to evaluate the brain sections. Astrocytic changes were observed in all samples and were characterized by swollen vesicular nuclei in gray (Alzheimer type II astrocytes) and white matter; and by abundant eosinophilic or vacuolated cytoplasm with pyknotic nuclei in the white matter. These changes were evidenced by anti-S100 and anti-GFAP immunostaining. Our study demonstrates major changes in astrocytes of cattle that died with neurologic clinical signs as the result of acute toxic liver disease.
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Affiliation(s)
- Angelica T B Wouters
- Department of Veterinary Medicine, Federal University of Lavras, Lavras, Minas Gerais State, Brazil (A Wouters, F Wouters, Varaschin).,Faculty of Veterinary Medicine, Cuiabá University, Cuiabá, Mato Grosso, Brazil (Boabaid).,Department of Clinical Pathology, Faculty of Veterinary, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil (Fredo, Watanabe, Driemeier)
| | - Flademir Wouters
- Department of Veterinary Medicine, Federal University of Lavras, Lavras, Minas Gerais State, Brazil (A Wouters, F Wouters, Varaschin).,Faculty of Veterinary Medicine, Cuiabá University, Cuiabá, Mato Grosso, Brazil (Boabaid).,Department of Clinical Pathology, Faculty of Veterinary, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil (Fredo, Watanabe, Driemeier)
| | - Fabiana M Boabaid
- Department of Veterinary Medicine, Federal University of Lavras, Lavras, Minas Gerais State, Brazil (A Wouters, F Wouters, Varaschin).,Faculty of Veterinary Medicine, Cuiabá University, Cuiabá, Mato Grosso, Brazil (Boabaid).,Department of Clinical Pathology, Faculty of Veterinary, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil (Fredo, Watanabe, Driemeier)
| | - Tatiane T N Watanabe
- Department of Veterinary Medicine, Federal University of Lavras, Lavras, Minas Gerais State, Brazil (A Wouters, F Wouters, Varaschin).,Faculty of Veterinary Medicine, Cuiabá University, Cuiabá, Mato Grosso, Brazil (Boabaid).,Department of Clinical Pathology, Faculty of Veterinary, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil (Fredo, Watanabe, Driemeier)
| | - Gabriela Fredo
- Department of Veterinary Medicine, Federal University of Lavras, Lavras, Minas Gerais State, Brazil (A Wouters, F Wouters, Varaschin).,Faculty of Veterinary Medicine, Cuiabá University, Cuiabá, Mato Grosso, Brazil (Boabaid).,Department of Clinical Pathology, Faculty of Veterinary, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil (Fredo, Watanabe, Driemeier)
| | - Mary S Varaschin
- Department of Veterinary Medicine, Federal University of Lavras, Lavras, Minas Gerais State, Brazil (A Wouters, F Wouters, Varaschin).,Faculty of Veterinary Medicine, Cuiabá University, Cuiabá, Mato Grosso, Brazil (Boabaid).,Department of Clinical Pathology, Faculty of Veterinary, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil (Fredo, Watanabe, Driemeier)
| | - David Driemeier
- Department of Veterinary Medicine, Federal University of Lavras, Lavras, Minas Gerais State, Brazil (A Wouters, F Wouters, Varaschin).,Faculty of Veterinary Medicine, Cuiabá University, Cuiabá, Mato Grosso, Brazil (Boabaid).,Department of Clinical Pathology, Faculty of Veterinary, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil (Fredo, Watanabe, Driemeier)
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Pavarini SP, Bandinelli MB, Bassuino DM, Correa GLF, Bandarra PM, Driemeier D, Hohendorff RV, Both MDC. Novos aspectos sobre a intoxicação por Trema micrantha (Cannabaceae) em equídeos. PESQUISA VETERINARIA BRASILEIRA 2013. [DOI: 10.1590/s0100-736x2013001100009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Trema micrantha é uma planta arbórea distribuída amplamente no Brasil. Descrevem-se nesse trabalho novos aspectos epidemiológicos e patológicos relacionados com a intoxicação por essa planta em equídeos. Dois equinos adultos da raça Crioula e dois asininos, de localidades distintas, foram intoxicados naturalmente por Trema micrantha, após consumirem grande quantidade da planta que ficou disponível a eles após uma poda. Além disso, um cavalo adulto, de outra propriedade, que estava passando por restrição alimentar, se intoxicou após consumir as partes baixas de um grande número de árvores jovens de T. micrantha. Clinicamente, em todos os equídeos a doença se caracterizou por alterações neurológicas, que apareceram três a quatro dias após o consumo da planta, com curso clínico de dois a quatro dias (abreviadas por eutanásia). Os principais achados de necropsia foram observados no fígado, que estavam levemente aumentados e com padrão lobular evidente e no sistema nervoso central (SNC), com múltiplas áreas amareladas, focos de malacia e hemorragia, principalmente, no tronco cerebral e cerebelo. Histologicamente, havia necrose hepática aguda, edema acentuado no SNC com degeneração fibrinoide da parede de vasos associada a hemorragia e trombose e, frequentemente, com infiltrado de neutrófilos. Outras alterações observadas nos encéfalos foram: grande quantidade de astrócitos de Alzheimer tipo II na substância cinzenta, acúmulos de células Gitter e degeneração Walleriana próxima a focos de lesões vasculares.
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