Jensen R, Alexander A F, Dahlgren R R, Jolley W R, Marquardt W C, Flack D E, Bennett B W, Cox M F, Harris C W, Hoffmann G A
Am J Vet Res. 1986 Mar;47(3):587-93.
Fifty-three bovine and 7 ovine carcasses condemned for having eosinophilic myositis were evaluated. Four (7.3%) of the bovine carcasses had a few, large local lesions in skeletal muscles (category A), and 49 (92.7%) of the bovine carcasses and 7 (100%) of the ovine carcasses had multiple, small, disseminated lesions in tongue, esophagus, heart, diaphragm, or skeletal muscles (category B). Tissue from carcasses of category B were evaluated for bacteria, viruses, selenium, and pathologic changes. Pathogenic bacteria and viruses were not isolated and selenium concentrations were normal. In category B, all carcasses had granulomas; of the 49 bovine carcasses and 7 ovine carcasses, 38 (77.6%) and 7 (100%), respectively, had one or more granulomas with opened dead sarcocysts. The data indicated that opened sarcocysts killed the host myocyte and adjacent myocytes and stroma, thereby initiating granuloma formation.
对53头因患嗜酸性肌炎而被判定不合格的牛尸体和7头羊尸体进行了评估。4头（7.3%）牛尸体的骨骼肌有少量大的局部病变（A类），49头（92.7%）牛尸体和7头（100%）羊尸体的舌头、食管、心脏、膈肌或骨骼肌有多个小的弥漫性病变（B类）。对B类尸体的组织进行了细菌、病毒、硒和病理变化评估。未分离出致病细菌和病毒，硒浓度正常。在B类中，所有尸体都有肉芽肿；在49头牛尸体和7头羊尸体中，分别有38头（77.6%）和7头（100%）有一个或多个带有开放死包囊的肉芽肿。数据表明，开放的包囊杀死了宿主肌细胞及相邻的肌细胞和基质，从而引发肉芽肿形成。
