Colonic epithelial nodular hyperplasia associated with strongyloidiasis in cats in the Amazon region, Para State, Brazil/Hiperplasia epitelial nodular no colon de felinos associada a estrongiloidiase na regiao Amazonica, Para, Brasil

• Published in: Ciência rural Vol. 47; no. 1
• Main Authors: Moura, Marcio Alan Oliveira, Jorge, Ediene Moura, do Nascimento, Kelly Karoline Gomes, Riet-Correa, Gabriela, Abel, Isis, Cavalcante, Gustavo Goes, de Oliveira, Carlos Alberto, Bezerra, Pedro Soares, Jr
• Format: Journal Article
• Language: English
• Published: Universidade Federal de Santa Maria 01.01.2017
• Subjects: Brasil
• ISSN: 0103-8478; 1678-4596
• DOI: 10.1590/0103-8478cr20160328

Strongyloides spp. are intestinal parasites that affect several animal species. Four species of the genus have been reported in domestic cats: S. felis, S. planiceps, S.stercoralis and S. tumefaciens. Reports describing infection by these nematodes in domestic cats in Brazil are scarce. This study aimed to describe the pathological features of Strongyloides spp. parasitism in two cats in the Amazon region, state of Para, Brazil. During the necropsy of the two cats, numerous whitish nodules approximately 0.2cm in diameter were observed in the wall of the large intestine. The nodules were conspicuous in the colonic mucosa and exhibited a punctate aperture facing the center of the lumen. Microscopically, these nodules were formed by projections of the mucosal epithelium into the submucosa, which formed tubules lined with a single layer of columnar epithelium, with high cellularity and rare goblet cells, characterizing epithelial hyperplasia of the crypts. Adult nematodes and eggs observed in the lumen of the tubules were morphologically compatible with Strongyloides spp. Numerous larvae were also observed in the interstitium adjacent to the nodule. A mild lymphocytic infiltrate was observed neighboring the hyperplastic nodules. The histological changes are consistent with those described for S. tumefaciens infection. Key words: Felis catus domesticus, intestinal nematodes, helminth, Strongyloides. Strongyloides spp. sao helmintos que podem parasitar o intestino de diversas especies animais. Quatro especies desse genero tem sido descritas em felinos domesticos: S. felis, S. planiceps, S. stercoralis e S. tumefaciens. Trabalhos sobre o parasitismo por estrongiloides em gatos domesticos no Brasil sao escassos. O objetivo deste trabalho e descrever os aspectos patologicos do parasitismo por Strongyloides spp. em dois gatos da regiao amazonica, no estado do Para. Estes apresentavam numerosos nodulos esbranquicados no intestino grosso, medindo cerca de 0,2 centimetros de diametro, que na microscopia eram constituidos por projecoes do epitelio hiperplasico da mucosa para submucosa, formando tubulos contendo varias femeas adultas, ovos e larvas com morfologia compativel com a de Strongyloides spp. e margeados por larvas e remanescentes do aglomerado linfoide. As alteracoes histologicas foram compativeis com as descritas no parasitismo por S. tumefaciens. Palavras-chave: Felis catus domesticus, nematodeos intestinais, helminto, Strongyloides.