Gustafsson K, Book M, Dubey J P, Uggla A
Department of Parasitology, Swedish University of Agricultural Sciences, Uppsala, Sweden.
J Zoo Wildl Med. 1997 Sep;28(3):280-4.
A nonsuppurative meningoencephalitis, previously presumed to be toxoplasmosis, was found in 53 capercaillies (Tetrao urogallus L.) examined at necropsy at the National Veterinary Institute, Uppsala, Sweden, between 1966 and 1985. Pronounced meningitis and encephalitis with perivascular cuffs of mononuclear inflammatory cells as well as focal gliosis were prominent histopathologic findings. Protozoa were frequently associated with these lesions. Ultrastructurally, the protozoa appeared to divide by endopolygeny, and merozoites had no rhoptries. Organisms from all 12 birds subjected to Sarcocystis cruzi immunohistochemical staining reacted positively but did not react to Toxoplasma gondii antiserum. The agent was, therefore, assigned to the family Sarcocystidae and was probably more closely related to species of the genus Sarcocystis than to T. gondii.
1966年至1985年间，在瑞典乌普萨拉国家兽医研究所剖检的53只黑琴鸡（Tetrao urogallus L.）中发现了一种非化脓性脑膜脑炎，此前曾推测为弓形虫病。明显的脑膜炎和脑炎，伴有单核炎性细胞的血管周围套袖以及局灶性胶质细胞增生是突出的组织病理学发现。原生动物经常与这些病变相关。在超微结构上，原生动物似乎通过内多殖进行分裂，裂殖子没有类锥体。对12只接受克氏肉孢子虫免疫组织化学染色的鸟类的病原体检测显示，所有样本均呈阳性反应，但对弓形虫抗血清无反应。因此，该病原体被归入肉孢子虫科，可能与肉孢子虫属的物种关系比与弓形虫更密切。
