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Volume 6, Number 3 >

STUDIES ON ECHINOCOCCOSIS VIII : EXPERIMENTAL ECHINOCOCCOSIS MULTILOCULARIS IN VARIOUS RODENTS ; ESPECIALLY ON THE DIFFERENCE OF SUSCEPTIBILITY AMONG UNIFORM STRAINS OF THE MOUSE

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Please use this identifier to cite or link to this item:http://doi.org/10.14943/jjvr.6.3.135

Title: STUDIES ON ECHINOCOCCOSIS VIII : EXPERIMENTAL ECHINOCOCCOSIS MULTILOCULARIS IN VARIOUS RODENTS ; ESPECIALLY ON THE DIFFERENCE OF SUSCEPTIBILITY AMONG UNIFORM STRAINS OF THE MOUSE
Authors: YAMASHITA, Jiro Browse this author
OHBAYASHI, Masashi Browse this author
KITAMURA, Yukitoshi Browse this author
SUZUKI, Kiyoshi Browse this author
OKUGI, Minoru Browse this author
Issue Date: 15-Nov-1958
Publisher: The Graduate School of Veterinary Medicine
Journal Title: Japanese Journal of Veterinary Research
Volume: 6
Issue: 3
Start Page: 135
End Page: 155
Abstract: Susceptibility to Echinococcus multilocularis was investigated in various species of rodent animals and various strains of mice. Among these, the albino hamster showed entirely negative result in respect to development of hydatid tissue and the case of Apodemus speciosus ainu examined likewise produced negative result. Other species and strains, however, were susceptible to the parasite, although infection rates were varied by species or strain. It was made clear that the hydatid can be classified into two types according to combination of the morphology of the hydatid and host tissue reaction. Type 1 was observed in Clethrionomys rufocanus bedfordiae, Clethrionomys rutilus mikado, Apodemus geisha, Eutamias asiaticus lineatus, Microtus montebelli montebelli, Meriones unguiculatus and two strains of mice, AKR and dba. In this type, the hydatid develops rapidly, individual cysts are large in size, scolices can be detected at 1.5〜2.5 months and host tissue reaction is slight in degree. Type 2 was manifested by 8 mouse strains, dd, C57BL/6,CF#1,b, CFW, A, BALB/C and C3H/He. In type 2,the hydatid develops slowly, individual cysts are minute, more than 5 months is required for scolex formation and severe tissue reaction on the host side is demonstrable. An animal which presents the hydatid of type 1 is a suitable intermediate host but an animal developing type 2 is not a very suitable one. It can be said without doubt that human cases manifest the latter type. It is a new fact that there are some mouse strains such as AKR and dba which show the hydatid of type 1. As a reason for inconsistency in reported results of mouse experiments in the past, the present authors wish to emphasize the difference of strains of mice. In the field of helminthology up to the present, investigators have had no regard for the strain of experimental animals in experiments on susceptibility. Concluding from the results of experiment with Echinococcus multilocularis, consideration must be paid to the strain in helminthology hereafter.
Type: bulletin (article)
URI: http://hdl.handle.net/2115/1734
Appears in Collections:Japanese Journal of Veterinary Research > Volume 6, Number 3

Submitter: 獣医学部図書室

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