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Human Reproduction, Vol. 15, No. 9, 1917-1920, September 2000
© 2000 European Society of Human Reproduction and Embryology

Apoptosis of testicular germ cells induced by exogenous glucocorticoid in rats

H. Yazawa, I. Sasagawa1 and T. Nakada

Department of Urology, Yamagata University School of Medicine, 2-2-2 Iidanishi, Yamagata 990-9585, Japan

The influence of exogenous glucocorticoid, dexamethasone (Dex), on testicular germ cell apoptosis was investigated in rats. The percentages of apoptotic tubules and apoptotic germ cells in the Dex-treated group of rats were about seven-fold and 10-fold higher respectively than in either the control group, or in rats treated with glucocorticoid receptor agonist (GR-A), or in rats treated with both Dex and GR-A. These results suggest that, in rats, apoptosis of testicular germ cells is mediated by glucocorticoid receptors.

Key words: apoptosis/germ cell/glucocorticoid/rat

1 To whom correspondence should be addressed at: Department of Urology, Yamagata University, School of Medicine, 2-2-2 Iidanishi, Yamagata-shi, Yamagata 990-9585, Japan.E-mail: isasaga{at}med.id.yamagata-u.ac.jp


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