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Human Taenia eggs develop into cysticerci in scid mice

Published online by Cambridge University Press:  01 January 1997

A. ITO ,
W. C. CHUNG ,
C. C. CHEN ,
M. ITO ,
S. ENDO ,
M. OKAMOTO  and
P. C. FAN
A. ITO
Affiliation:
Department of Parasitology, Gifu University School of Medicine, Gifu 500, Japan
W. C. CHUNG
Affiliation:
Department of Parasitology, Taipei Medical College, Taipei 250, Taiwan, Republic of China
C. C. CHEN
Affiliation:
Department of Parasitology, National YangMing University, Taipei 112, Taiwan, Republic of China
M. ITO
Affiliation:
Central Institute for Experimental Animals, Kawasaki 216, Japan
S. ENDO
Affiliation:
Central Institute for Experimental Animals, Kawasaki 216, Japan
M. OKAMOTO
Affiliation:
Institute of Experimental Animal Sciences, Osaka University Medical School, Suita 565, Japan
P. C. FAN
Affiliation:
Department of Parasitology, National YangMing University, Taipei 112, Taiwan, Republic of China
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Abstract

The intermediate hosts for Taenia saginata and T. solium are cattle and pigs (and humans for the latter), respectively. In vitro-hatched (but not activated) oncospheres of both Asian Taenia (T. saginata asiatica, a new subspecies of T. saginata or T. asiatica, a new species) and T. solium injected subcutaneously into the backs of mice with severe combined immunodeficiency (scid) developed into fully matured cysticerci. Five-month-old metacestodes of Asian Taenia had no hooklets and were bigger in size than those previously reported and similar to those of T. saginata. Their morphology suggested that the cysticerci were more advanced than those in the intermediate host animals. It is suggested that scid mice are valuable experimental animal models for studying human taeniid cestode infections.

Keywords

Asian TaeniaTaenia soliumTaenia saginatametacestodesoncospheresscid mice
Type
Research Article
Information
Parasitology , Volume 114 , Issue 1 , January 1997 , pp. 85 - 88
Copyright
© 1997 Cambridge University Press

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