Bartel M H, Seesee F M, Worley D E
Department of Biology, Moorhead State University, Minnesota 56563.
J Parasitol. 1992 Jun;78(3):529-32.
To assess its biological distinctness, an isolate of Echinococcus multilocularis from Montana was compared with an isolate from Alaska in gerbils (Meriones unguiculatus) by means of intraperitoneal inoculations with protoscoleces. The cysts formed by the Montana isolate were entire, hyaline, and translucent, whereas those produced by the Alaska isolate were granular, yellowish, and opaque. Vesicles of the Montana isolate were larger, produced protoscoleces more slowly but in greater numbers, and required a longer period to develop surfacial germ cell protrusions, which were of smaller size. Also delayed was invasion of the laminate layer by granulocytes and macrophages, and a longer time was required for the appearance of pulmonary metastases. The 2 isolates differed also in characteristics of rostellar hooks, those from the Montana isolate being fewer and larger, often with accessory hooks.
为评估其生物学差异，通过向沙土鼠（长爪沙鼠）腹腔接种原头节，将来自蒙大拿州的多房棘球绦虫分离株与来自阿拉斯加的分离株进行了比较。蒙大拿州分离株形成的囊肿完整、透明且半透明，而阿拉斯加分离株产生的囊肿呈颗粒状、淡黄色且不透明。蒙大拿州分离株的囊泡更大，原头节产生得更慢但数量更多，并且形成表面生殖细胞突起所需的时间更长，这些突起的尺寸更小。粒细胞和巨噬细胞对板层的侵袭也延迟，出现肺转移所需的时间更长。这两个分离株在顶突小钩的特征上也有所不同，蒙大拿州分离株的小钩数量更少、更大，且常有副钩。
