Fodor L, Hajtós I, Glávits R
Department of Microbiology and Infectious Diseases, University of Veterinary Science, Budapest, Hungary.
Acta Vet Hung. 1991;39(1-2):13-9.
Three strains of the Pasteurella aerogenes complex were isolated as sole pathogens from aborted fetuses of a sow aborted at the 12th week of gestation on a farm of 600 sows. Gross pathology showed no characteristic lesions. The isolates were biochemically identical and resembled P. pneumotropica on the basis of their strong indole and urease positivity but they produced gas, were ornithine decarboxylase negative and fermented mannitol but not trehalose. Only a few differences were apparent in biochemical characteristics between the isolated strains and P. aerogenes. They differed from the type strain of P. aerogenes in ornithine decarboxylase activity, indole production and lactose and mannitol fermentation; however, such strains do occur within this heterogeneous species. At the time of abortion the antibody titre of the aborted sow was 1 in 16 when examined with live bacterial suspension and 1 in 128 if boiled antigen was used. Similar strains could not be isolated from the vaginas of aborted sows or pregnant and newly farrowed sows in the same group. The bacteriological, serological and histological findings support the opinion of other workers on the occasional pathogenic nature of P. aerogenes.
从一个拥有600头母猪的农场中一头在妊娠第12周流产的母猪的流产胎儿中分离出三株产气巴斯德氏菌属复合体菌株，作为唯一的病原体。大体病理学检查未发现特征性病变。这些分离株在生化特性上相同，基于其强烈的吲哚和脲酶阳性反应，与嗜肺巴斯德氏菌相似，但它们产气，鸟氨酸脱羧酶阴性，能发酵甘露醇但不能发酵海藻糖。分离株与产气巴斯德氏菌在生化特性上仅存在一些明显差异。它们在鸟氨酸脱羧酶活性、吲哚产生以及乳糖和甘露醇发酵方面与产气巴斯德氏菌模式菌株不同；然而，在这个异质物种中确实存在这样的菌株。流产时，用活细菌悬液检测，流产母猪的抗体效价为1:16，若使用煮沸抗原检测则为1:128。在同一组中，从流产母猪、怀孕母猪和刚产仔母猪的阴道中未分离到类似菌株。细菌学、血清学和组织学检查结果支持其他研究人员关于产气巴斯德氏菌偶尔具有致病性的观点。
