Erina Saita   Atsushi Tohei   Wan Zhu Jin   Shinji Takahashi   Akira K Suzuki   Gen Watanabe   Kazuyoshi Taya   
The Journal of reproduction and development 51(2) 221-8 2005年4月
Thyroid hormones permit the annual reproductive transition of seasonal breeders. Although, precise function of thyroid hormones in seasonal breeding is not well understood. In the present study, we examined effects of hypothyroidism on the hypotha...
Hiroe Kon   Atsushi Tohei   Ryoji Hokao   Motoo Shinoda   
Experimental animals 54(2) 185-7 2005年4月
The estrous cycle influence on the number of ovulated eggs after injection of pregnant mare serum gonadotropin (PMSG) and human chorionic gonadotropin (hCG) was investigated in 12, 18, and 24 weeks old adult female Wistar-Imamichi (WI) rats. PMSG ...
The Journal of reproduction and development 50(1) 9-20 2004年2月
In order to clarify the functional relationship between thyroid, adrenal and gonadal hormones, hypothyroidism was induced by administration of thiuoracil in adult male and female rats, and the effects of hypothyroidism on the adrenal and the gonad...
In the present study, we used closed colony-Wistar-Imamichi (WI), inbred WI and Long Evans (LE) adult male rats to examine the secretion of ACTH and corticosterone in response to restraint stress. Blood (0.3 ml) was withdrawn through a jugular can...
Hatano high- and low-avoidance (in a two-way active avoidance task) animals (HAA and LAA, respectively) were successfully selected from a Sprague-Dawley rat population. Pup growth of both strains was dependent on the maternal strain in a cross-fos...