Morphologic Examinations of Cases of Naturally Acquired Encephalitozoonosis in a Rabbit Colony

Authors : Hatice ERÖKSÜZ, Yesari ERÖKSÜZ, Nursal METİN, Harun ÖZER

Pages : 191-196

View : 15 | Download : 4

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :A four-month study of the distribution of morphologic lesions relating to encephalitozoonosis and the staining proper-ties of Encephalitozoon cuniculi was carried out on 40 rabbits from a breeding colony of 100 White New Zealand rabbits. Prominent and constant gross lesions, distinguished by subcapsular, small depressions, were identified in the kidneys of 37 rabbits insert ignore into journalissuearticles values(92.5%);. These lesions were bilateral, and exhibited focal and multifocal distribution. Microscopic examinations of the kidneys revealed that the lesions were characterized by non-purulent granulomatous interstitial nephritis insert ignore into journalissuearticles values(55%); and chronic interstitial nephritis insert ignore into journalissuearticles values(45%);. Non-purulent focal granulomatous encephalitis, frequently located in the cerebral cortex, was also detected in 8 rabbits, corre-sponding to 20% of the total. In addition, mild meningitis was also found in some of these cases. Special staining methods insert ignore into journalissuearticles values(Grocot`s methanamine silver nitrate, Levaditi-Manovelian, Brown & Brenn, MacCallum & Goodpasture, Ziehl-Neelsen, May-Grunwald Giemsa); were used to reveal sporozoids and pseudocysts in paraffin sections. Silver impregnation methods were found to be more reliable and the results more easily interpretable than the others, particularly with regard to kidneys. Sporozoids and pseudocysts were found in 42.5% of the total cases, either in the brain or kidney.
Keywords : Encephalitozoonosis, naturally occurring infection, morphologic lesions, rabbit