Fecha/hora: 11/06/2024 04:17:21

Biblioteca(s): | INIA La Estanzuela.
Fecha corriente: | 19/08/2019
Fecha de la última actualización: | 11/10/2019
Autoria: | ARÁOZ, V.; SILVEIRA, C.S.; MORÉ, G.; BANCHERO, G.; RIET-CORREA, F.; GIANNITTI, F.
Afiliación: | VIRGINIA 	ARÁOZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CAROLINE DA SILVA SILVEIRA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GASTÓN MORÉ, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.; GEORGGET ELIZABETH BANCHERO HUNZIKER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FRANKLIN RIET-CORREA AMARAL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FEDERICO GIANNITTI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.
Título: | Fatal Sarcocystis cruzi-induced eosinophilic myocarditis in a heifer in Uruguay.
Año de publicación: | 2019
Fuente/Imprenta: | Journal of Veterinary Diagnostic Investigation, 2019, Vol. 31(4) 656-660, 2019.
DOI: | 10.1177/1040638719856651
Idioma: | Inglés
Notas: | Article history: Article first published online: June 10, 2019// Issue published: July 1, 2019

Contenido:

Abstract:
Sarcocystis spp. are causative agents of bovine eosinophilic myositis and/or myocarditis, which are chronic subclinical myopathies that are occasionally responsible for condemnation at slaughterhouses. Sarcocystis cruzi is a protozoan parasite of worldwide distribution transmitted by canids, most commonly associated with subclinical infection in cattle. Although S. cruzi infections can rarely lead to fatal systemic disease, fatal cardiac cases with confirmation of the etiologic diagnosis have not been reported, to our knowledge. We describe herein an unusual case of S. cruzi?induced fatal bovine eosinophilic myocarditis. A 22-mo-old, Holstein?Hereford heifer, in a group of 110 cattle on pasture, manifested growth retardation and died in February 2017. Autopsy revealed myriad yellow-green 1?3-mm coalescing foci, surrounded by fibrosis, affecting ~75% of the ventricular myocardium. Pulmonary edema, ascites, and hydrothorax were consistent with chronic congestive heart failure. Histology revealed severe eosinophilic, granulomatous, necrotizing myocarditis, with multinucleate giant cells, fibrosis, and mineralization. Numerous thin-walled protozoan cysts resembling Sarcocystis spp. were present in the necrotic foci and within the sarcoplasm of adjacent cardiomyocytes. PCR and sequencing of the 18S rRNA gene revealed 99.9?100% homology with S. cruzi. Sarcocystosis can be a rare cause of fatal myocarditis in cattle.

Palabras-Clave: | CATTLE; EOSINOPHILIC MYOCARDITIS; FATALITY; MIOCARDITIS EOSINOFILICA BOVINA; PARÁSITO PROTOZOARIO; PLATAFORMA SALUD ANIMAL; SARCOCYSTIS CRUZI; SARCOCYSTOSIS.
Thesagro: | BOVINOS.
Categoría del tema: | L73 Enfermedades de los animales
Registro original: | INIA La Estanzuela (LE)
Ejemplares: | LE - (102946-1) - PXI - AP - DD - PP/JVDI/2017/Araoz -  -  - DIS