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Pesquisa Veterinaria Brasileira | 2016

Biópsia hepática como método diagnóstico para intoxicação por plantas que contém swainsonina

Brena P. Rocha; Matheus de Oliveira Reis; David Driemeier; Daniel Cook; Lázaro Manoel de Camargo; Franklin Riet-Correa; Joaquim Evêncio-Neto; Fábio de Souza Mendonça

With the aim to investigate the use of hepatic biopsies for the diagnosis of poisoning by swainsonine-containing plants, dry leaves of Ipomoea marcellia containing 0.02% of swainsonine were administered to goats. Group I, with six goats, ingested 4g/kg of dry plant (0.8mg of swainsonina/kg) daily until the observation of the first neurologic signs. Two goats that did not receive the plant were used as control (Group II). Hepatic biopsies with the Menghini needle were performed by the percutaneous technique at day zero and at weekly intervals after the start of the administration of I. marcellia. Biopsy samples were fixed in 10% formaline, processed routinely, and stained by hematoxilin-eosin and by lectins histochemistry. Hepatocellular vacuolization similar to those described in cases of lysosomal storage disease were identified in all goats of Group I from the seven day of plant consumption in the samples satained with hematoxylin-eosin. Using lectin histochemistry, consistent labellings were observed with Concanavalia ensiformis (Con-A) e Triticum vulgaris (WGA). It is concluded that routinely histological evaluation of liver biopsies can be used in the diagnosis of poisoning by swainsonine containing plants, even in goats without clinical signs, and lectin histochemistry which can be used as supplementary diagnostic method.


Pesquisa Veterinaria Brasileira | 2015

Neoplasmas oculares e de anexos em cães e gatos no Rio Grande do Sul: 265 casos (2009-2014)

Kivia L. Hesse; Gabriela Fredo; Lorena Lima Barbosa Guimarães; Matheus de Oliveira Reis; João Antonio Tadeu Pigatto; Saulo Petinatti Pavarini; David Driemeier; Luciana Sonne

Ocular neoplasms cause discomfort, loss of vision or may also reflect systemic diseases. A retrospective study has been performed to identify and analyze ocular and annexes neoplasms obtained by biopsies sent to the Sector of Veterinary Pathology at the Federal University of Rio Grande do Sul (SPV/ UFRGS). 265 diagnoses of ocular and annexes neoplasms, 87.5% in canine species and 12.5% in feline species, were made from January 2009 to December 2014. Neoplasms occurred more in animals over the age of 12 months and animals of old age, dogs (52/232) and cats (21/33) mixed breed were the most affected. The eyelid was most commonly affected in dogs (164/232) and feline (20/33), followed by the third eyelid in dogs (20/232) and eye orbit in cats (5/33). The most common tumor diagnosed was meibomian adenoma in dogs (82/232) and squamous cell carcinoma in cats (10/33) both in the eyelids. Twenty four tumor types have been identified in dogs and 16 in cats. Benign neoplasms in dogs represented the largest number of diagnosis (56%) whereas in cats, there were more cases of malignant neoplasms (75.8%).


Pesquisa Veterinaria Brasileira | 2014

Achados patológicos em caninos com displasia renal no Sul do Brasil

Lorena Lima Barbosa Guimarães; Matheus de Oliveira Reis; Kivia L. Hesse; Fabiana M. Boabaid; Saulo Petinatti Pavarini; Luciana Sonne; David Driemeier

Renal dysplasia results from a disturbance which occurs during nephrogenesis. The disease may be unilateral or bilateral, and leads to abnormal kidney differentiation leading to renal failure in young dogs. Several agents, including viruses, can cause the dysplasia till three months after birth, when the early nephron formation of the developing kidney is completed. Eleven renal dysplasia cases were diagnosed in 186 dogs with renal failure of 5,846 dogs necropsied in the Veterinary Pathology Sector, Federal University of Rio Grande do Sul, in the period 2002-2013. Tissue samples collected during necropsy were fixed in 10% formaldehyde and stained with hematoxylin-eosin (HE) and Masson’s trichrome protocol. Upon necropsy, kidneys were pale, smaller than normal, irregular and firm, and presented lower cortex diameter. Some exhibited cysts and whitish, parallel radially arranged striae in the medulla. Primary and secondary renal lesions were observed during histological examination. Primary lesions included fetal glomeruli and tubules, quantitative reduction in glomeruli, adenomatous tubules, and persistence of metanephric ducts. As for secondary lesions, Masson trichrome staining revealed intense interstitial fibrosis in all cases; furthermore, dilation of tubules and of Bowman’s capsules, glomerular atrophy, and glomerulosclerosis were observed. Even though most cases were associated with breed, the results obtained indicate high prevalence of renal dysplasia in mixed-breed dogs, possibly because they were the majority of animals referred for necropsy. Although primary lesions were easily identified using HE, Masson’s trichrome protocol is useful to characterize the extent of fibrosis.


Ciencia Rural | 2017

Ostecondroma em um felino jovem infectado pelo vírus da leucemia felina

Matheus de Oliveira Reis; Lauren Santos de Mello; Kivia L. Hesse; Marina Paula Lorenzett; Kauê Danilo Helene Lemos dos Reis; Fabrício Souza Campos; Paulo Michel Roehe; Saulo Petinatti Pavarini


Pesquisa Veterinaria Brasileira | 2018

Hypomyelinogenesis associated with transplacental poisoning by Sida carpinifolia (Malvaceae) in fetus and newborn calves

Matheus de Oliveira Reis; Raquel Aparecida Sales da Cruz; Daniele Mariath Bassuino; Fabiana M. Boabaid; Luiz Gustavo Schneider de Oliveira; Lauren Santos de Mello; Luciana Sonne; David Driemeier


Pesquisa Veterinaria Brasileira | 2017

Vascular injury in spontaneous subacute toxicosis caused by organic arsenic in cattle

Maiara Aline Gonçalves; Raquel Aparecida Sales da Cruz; Matheus de Oliveira Reis; Saulo Petinatti Pavarini; Luciana Sonne; David Driemeier


Pesquisa Veterinaria Brasileira | 2017

Neoplasmas bovinos diagnosticados no Setor de Patologia Veterinária da UFRGS, Porto Alegre (2005-2014)

Matheus de Oliveira Reis; Mônica Slaviero; Marina Paula Lorenzett; Raquel Aparecida Sales da Cruz; Lorena Lima Barbosa Guimarães; Saulo Petinatti Pavarini; David Driemeier; Luciana Sonne


Pesquisa Veterinaria Brasileira | 2017

Spontaneous poisoning by Sida carpinifolia (Malvaceae) in horses

Daniele Mariath Bassuino; Guilherme Konradt; Matheus Viezzer Bianchi; Matheus de Oliveira Reis; Saulo Petinatti Pavarini; David Driemeier


Pesquisa Veterinaria Brasileira | 2017

Surto de leptospirose em bezerros criados em resteva de arroz

Matheus de Oliveira Reis; Rafaela A. Caprioli; Cláudio João Mourão Laisse; Lorena Lima Barbosa Guimarães; Caroline Pinto de Andrade; Fabiana M. Boabaid; Luciana Sonne; David Driemeier


Pesquisa Veterinaria Brasileira | 2017

Intoxicação por Senecio brasiliensis em bezerros: padrão e evolução de lesões hepáticas

Welden Panziera; Maiara Aline Gonçalves; Luiz Gustavo Schneider de Oliveira; Marina Paula Lorenzett; Matheus de Oliveira Reis; M. E. Hammerschmitt; Saulo Petinatti Pavarini; David Driemeier

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David Driemeier

Universidade Federal do Rio Grande do Sul

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Saulo Petinatti Pavarini

Universidade Federal do Rio Grande do Sul

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Luciana Sonne

Universidade Federal do Rio Grande do Sul

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Lorena Lima Barbosa Guimarães

Universidade Federal do Rio Grande do Sul

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Raquel Aparecida Sales da Cruz

Universidade Federal do Rio Grande do Sul

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Fabiana M. Boabaid

Universidade Federal do Rio Grande do Sul

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Kivia L. Hesse

Universidade Federal do Rio Grande do Sul

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Maiara Aline Gonçalves

Universidade Federal do Rio Grande do Sul

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Marina Paula Lorenzett

Universidade Federal do Rio Grande do Sul

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Daniele Mariath Bassuino

Universidade Federal do Rio Grande do Sul

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