Acute sarcocystosis-like disease in a dog |
| |
Authors: | J P Dubey S F Cosenza T P Lipscomb M J Topper C A Speer L D Hoban S W Davis A L Kincaid J C Seely G E Marrs |
| |
Institution: | Livestock and Poultry Sciences Institute, USDA, Beltsville, MD 20705. |
| |
Abstract: | Two of 8 littermate Rottweiler dogs developed persistent diarrhea at 6.5 weeks of age. Dog 1 was euthanatized at 14 weeks of age and had hepatitis characterized by necrosis and mixed leukocyte infiltrations in association with a previously unrecognized Sarcocystis-like protozoon. The organism was free in the hepatocyte cytoplasm without a parasitophorous vacuole, had divided by schizogony, and stained with anti-Sarcocystis serum, but did not stain with anti-Toxoplasma gondii or anti-Neospora caninum serum in an immunohistochemical test. Dog 2 was euthanatized at 10 weeks of age. This dog had large necrotic, hemorrhagic mesenteric lymph nodes. Numerous T gondii tachyzoites were observed in association with these lesions. The organism divided by endodyogeny and stained specifically with anti-T gondii serum. |
| |
Keywords: | |
|
|