Caracterização morfológica e imuno-histoquímica de lesões em casos de aborto bovino bacteriano e viral no sul de Minas Gerais

Abstract

Lavras, from 1999Lavras, from to 2013. From 60 fetuses studied, 30 (50%) had microscopic lesions. From these, eight had lesions consistent with bacterial agents and three had lesions suggestive of viral agents. In the bacterial abortions, one fetus presented lesions compatible with leptospirosis, characterized by jaundice, cholestasis, lymphoplasmacytic intersticial nephritis, and tubular nephrosis. Seven fetuses had purulent pneumonia or bronchopneumonia and one of them had also fibrinous pleuritis and peritonitis; two of them presented positive immunostaining for Brucella abortus. One of the three fetuses with lesions of viral infection revealed positive imunostaining for bovine herpesvirus. The results showed that abortions of bacterial and viral origin occur in the Region of this study and prophylactic measures should be adopted on the farms. This study also demonstrates that immunohistochemistry associated with histopathology is a useful and viable tool for the diagnosis, especially when microbiological and/or serological tests are not available.

Trueperella pyogenes como causa de aborto em uma vaca - relato de caso

“…As lesões histológicas também são semelhantes às de aborto por brucelose, tais como pneumonia necrossupurativa e pleurite fibrinosa. As infiltrações de células inflamatórias no fígado e a placentite purulenta também são características em comum entre as duas bactérias (Orlando et al, 2014;Antoniassi et al, 2016).…”