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Fate of macrosarcocyst of Sarcocystis gigantea in sheep

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Author(s): N. S. Al-Hyali1, E. R. Kennany2 and L.Y. Khalil1 | N. S. Al-Hyali1, E. R. Kennany2 and L.Y. Khalil1 | N. S. Al-Hyali1, E. R. Kennany2 and L.Y. Khalil1

Journal: Iraqi Journal of Veterinary Sciences
ISSN 1607-3894

Volume: 25;
Issue: 2;
Start page: 87;
Date: 2011;
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Keywords: Sarcocystis gigantean | Calcification | Macrosarcocyst | Sarcosporidiosis | Bradyzoites

ABSTRACT
This study was conducted to detect the fate of macrosarcocysts of Sarcocystis gigantea in the tongue and eosophagus of naturally infected sheep, via collection of 25 samples, 10 of which showed calcification. The results showed presence of white different size grains on the wall of the pale eosophagus, in addition to presence of nodules containing white chalky materials and on cutting by knife produced grunting sound which indicated calcification. Histopathological results showed presence of granulomatous nodules that contained necrotic centers infiltration by inflammatory cells. Some of which were free from zoites in addition to presence of calcium salt precipitation, which represented dystrophic calcification. Eosinophilic myositis appeared in the tongue was associated with ruptured cyst and released zoites in muscular tissue. Some histological sections revealed ruptured macrocystis with thin wall deposited between muscle bundles. In conclusion, this study showed that the fate of macrocysts included the formation of granulomatous nodules associated with dystrophic calcification and dead zoites in eosophagous more than that in the tongue.
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