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Sarcocystosis of Sarcocystis felis in cats
Hany M Elsheikha1, Frances A Kennedy, Alice J Murphy
1Department of Parasitology, Faculty of Veterinary Medicine Mansoura University, Mansoura 35516, Egypt.
Abstract:
The features of S. felis sarcocystosis in muscles of the domestic cats (Felis domesticus) were studied. A complete clinical history, post mortem, and histo-pathologic examinations were done for each cat. Multiple protozoan elliptical cysts were in the skeletal muscles, heart, and diaphragm muscles of 3/17 (17.6%) adult cats. Ultrastructural characteristics of the bradyzoites and cyst wall were consistent with those described for S. felis in bobcat and domestic cat. Clinico-pathological study in 3 cats showed hypertrophy cardiomyopathy and lymphosarcoma associated with S. felis. Tissue samples showed a spectrum of pathological changes such as multi-focal subacute myocarditis and multi-focal subarachnoid lymphocytic infiltration. DNA extracted from muscles diaphragm with cysts was tested by PCR and sequence analyses of ssurRNA gene. The phylogenetic reconstructions using neighbor-joining method showed that S. felis is closely related to S. neurona. The results were illustrated and photographed and peer discussed.
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