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Experimental infection of larval Echinococcus multilocularis in the rodent brain as a model for cerebral alveolar echinococcosis

Published online by Cambridge University Press:  05 June 2009

Y. Sato ,
M. Nakao ,
K. Nakaya  and
A. Ito
Y. Sato*
Affiliation:
Department of Parasitology, Asahikawa Medical College, Asahikawa 078, Japan
M. Nakao
Affiliation:
Department of Parasitology, Asahikawa Medical College, Asahikawa 078, Japan
K. Nakaya
Affiliation:
Animal Laboratory for Medical Research, Asahikawa Medical College, Asahikawa 078, Japan
A. Ito
Affiliation:
Deparment of Parasitology, Gifu University School of Medicine, Gifu 500, Japan
*
* Fax: +81 166 68 2429 E-mail: yukita@asahikawa-med.ac.jp
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Abstract

Experimental infection of larval Echinococcus multilocularis in the rodent brain was attempted to establish a murine model for cerebral alveolar echinococcosis. Balb/c mice and jirds were injected intracranially with 10% of a homogenated hydatid cyst mass. Small cystic larvae were observed macroscopically in the cranial cavity 1, 2 and 5 months post-infection in both mice and jirds. Some larval cysts from both rodents contained mature or immature protoscoleces. In mice, the laminated layer was found in the lateral ventricle 2 months post-infection but without protoscoleces. At five months post-infection, larger larval cysts were found in the cranial cavity of a mouse, which also demonstrated partial palsy of the legs. A laminated layer with mature protoscoleces was observed in the third ventricle and the mouse also harboured, in the left lung, a larval cyst containing protoscoleces surrounded by lymphocytes. Jirds were also found to be infected with metacestodes in the cranial cavity, but neither unusual behaviour nor establishment of cysts inside the brain was observed in jirds during the course of infection.

Type
Research Papers
Information
Journal of Helminthology , Volume 72 , Issue 1 , March 1998 , pp. 59 - 64
Copyright
Copyright © Cambridge University Press 1998

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