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Antibody responses against Echinococcus multilocularis antigens in naturally infected Rattus norvegicus

Published online by Cambridge University Press:  05 June 2009

A. Ito
Affiliation:
Department of Parasitology, Gifu University School of Medicine, Gifu 500, Japan
M. Okamoto
Affiliation:
Institute of Experimental Animal Sciences, Osaka University Medical School, Suita 565, Japan
H. Kariwa
Affiliation:
Department of Environmental Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo 060, Japan
T. Ishiguro
Affiliation:
Department of Parasitology, Gifu University School of Medicine, Gifu 500, Japan
A. Hashimoto
Affiliation:
Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo 060, Japan
M. Nakao
Affiliation:
Department of Parasitology, Asahikawa Medical College, Asahikawa 078, Japan

Abstract

Two Norway rats, Rattus norvegicus, were found to be naturally infected with Echinococcus multilocularis in Japan. One of them was simultaneously infected with at least three different sized metacestodes of Taenia taeniaeformis. These two R. norvegicus rats and another R. norvegicus naturally infected with T. taeniaeformis and Capillaria hepatica were examined to see if they showed any antibody responses against these two cestode parasites with the view to obtaining more information on the importance of rats as the intermediate host for E. multilocularis. These R. norvegicus showed very poor antibody responses against the two cestode species, although the Wistar rats, R. rattus, experimentally infected with a single smaller sized metacestode of T. taeniaeformis showed stronger responses not only against T. taeniaeformis but also against E. multilocularis. Therefore the three R. norvegicus naturally infected with E. multilocularis and/or T. taeniaeformis demonstrated virtually no immune response, at least against these cestodes.

Type
Research Note
Copyright
Copyright © Cambridge University Press 1996

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