First description of parasite load and clinicopathological and anatomopathological changes in a dog naturally coinfected with Dioctophyme renale and Leishmania infantum in Brazil
2019
Oliveira, Valéria da Costa | Mendes Junior, Artur Augusto Velho | Cavalcanti, Maíra Cruz de Holanda | Madeira, Maria de Fátima | Ferreira, Luiz Claudio | Figueiredo, Fabiano Borges | Campos, Monique Paiva de | Nadal, Niara Vanat | Almosny, Nádia Regina Pereira | Menezes, Rodrigo Caldas
This article reports the case of a domestic dog naturally coinfected with the nematode Dioctophyme renale and with the protozoan Leishmania infantum. The dog exhibited no clinical signs but had normocytic hypochromic anemia, hyperproteinemia, hyperglobulinemia, hypoalbuminemia, and hematuria. Necropsy revealed eight D. renale specimens in the abdominal cavity and in right kidney whose parenchyma was atrophied. Histopathological analysis showed glomerular atrophy, fibrosis and a marked diffuse pyogranulomatous inflammatory infiltrate in the right kidney. Moderate multifocal granulomatous peritonitis was observed in the greater omentum. Several Dioctophyme renale eggs were present amidst the inflammatory infiltrate of the right kidney and greater omentum. Leishmania infantum parasites were detected in perirenal adipose tissue of the right kidney, greater omentum, spleen, bone marrow, and popliteal lymph node. The high D. renale load and the severe and uncommon histological alterations associated with the eggs of this parasite may have been influenced by coinfection with L. infantum.
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