Intestinal Spirochetosis in Wild Sika Deer(Cervus Nippon Yesoensis)Infected with Brachyspira Species

Journal of Veterinary Medical Science

Yoshiharu ISHIKAWA⁵  Koichi KADOTA⁵  Masuo SUEYOSHI¹  Tomoyuki SHIBAHARA⁵  Tatsuo OHYA³  Mizue HIKITA⁴  Yoshihiro WADA² 

[1] Faculty of Agriculture,Miyazaki University,1-1 Gakuenkihanadainishi,Miyazaki 889-2192,Japan;Rumoi Livestock Hygiene Service Center,11 Miyazono,Horonobe 098-3207,Japan;Kyushu Research Station,National Institute of Animal Health,2702 Chuzan,Kagoshima 891-0105,Japan;Ishikari Livestock Hygiene Service Center,3 Hitsujigaoka,Toyohira,Sapporo 062-0045,Japan;Hokkaido Research Station,National Institute of Animal Health,4 Hitsujigaoka,Toyohira,Sapporo 062-0045,Japan

关键词: Brachyspira(Serpulina);    intestinal spirochete;    intestin;    sika deer(Cervus nippon yesoensis);    spirochetosis;   

DOI  :  10.1292/jvms.62.947

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(14)Cited-By(7)Seven adult free−ranging sika deer(Cervus nippon yesoensis)were examined by histology, immunohistochemistry and electron microscopy for intestinal spirochetal infection.Histologically epithelial and goblet cell hyperplasia and edema of the lamina propria mucosa with macrophage and lymphocyte infiltration were observed in the cecum and colon in 6 of the 7 deer.Numerous argyrophilic spirochetes were present in the crypts and some had invaded epithelial and goblet cells and caused degeneration.Immunohistochemically the organisms stained positively with polyclonal antisera against Brachyspira(Serpulina)hyodysenteriae and B.pilosicoli.Ultrastructurally they were 6−14 μm long, 0.2−0.3 μm wide and had 4−6 coils and 13 axial filaments per cell;such features were closely similar to those in the Brachyspira species.These results showed that the spirochetes were capable of inducing enteritis in deer and this intestinal spirochete infection might already be prevalent among wild sika deer in Japan.There is a possibility that this spirochetal colitis is a new syndrome in sika deer and that the same and/or similar spirochetes have infected ruminants, including sika deer and cattle.

【 授权许可】

Unknown