Idiopathic eosinophilic myositis in Korean native cattle (Bos taurus coreanae)

  • Rhee, Seong-Hee (Bio-safety Research Institute and College of Veterinary Medicine, Chonbuk National University) ;
  • Yu, Il-Jeoung (Bio-safety Research Institute and College of Veterinary Medicine, Chonbuk National University) ;
  • Kim, Jong-Hoon (Bio-safety Research Institute and College of Veterinary Medicine, Chonbuk National University) ;
  • Kwon, Jung-Kee (Bio-safety Research Institute and College of Veterinary Medicine, Chonbuk National University) ;
  • Park, Jinho (Bio-safety Research Institute and College of Veterinary Medicine, Chonbuk National University) ;
  • You, Myung-Jo (Bio-safety Research Institute and College of Veterinary Medicine, Chonbuk National University) ;
  • Lee, Jeong-Won (Jeongeup Branch, Institute of Live Stock and Veterinary Research) ;
  • Park, Hee-Jin (Bio-safety Research Institute and College of Veterinary Medicine, Chonbuk National University) ;
  • Chekarova, Irina (Bio-safety Research Institute and College of Veterinary Medicine, Chonbuk National University) ;
  • Camer, Gerry Amor (College of Veterinary Medicine, University of Eastern Philippines) ;
  • Lim, Chae-Woong (Bio-safety Research Institute and College of Veterinary Medicine, Chonbuk National University) ;
  • Kim, Bumseok (Bio-safety Research Institute and College of Veterinary Medicine, Chonbuk National University)
  • Accepted : 2008.04.03
  • Published : 2008.08.01

Abstract

Eosinophilic myositis lesions are characterized by severe eosinophil infiltration along muscles of affected animals. The exact cause of the lesion remains controversial and the carcass is condemned once this lesion is seen during meat inspection. A cow slaughtered in Chonbuk province, Korea was observed to have disseminated pale foci throughout the musculature; meat samples were obtained and macroscopically investigated. Cut ends of neck and thigh muscle tissues showed variably sized, multifocal pale white-grayish nodular lesions. Histopathological examination consistently revealed inflammatory lesions with adjacent infiltration of eosinophilic granulocytes and focal necrotic calcification. However, no parasites, including Sarcocystis sp., could be discerned in the affected carcass. This case was diagnosed as idiopathic eosinophilic myositis in cattle.

Acknowledgement

Supported by : Bio-Safety Research Institute

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