| Abstract: | The effect of acute and chronic stress on serum testosterone was studied in adult male Wistar rats. Acute noise-light stress and the presence of a dog, but not change of room, raised serum testosterone. This testosterone was of gonadal origin since noise-light stress did not increase serum testosterone in castrated rats. Chronic noise-light did not modify either testes weight or serum testosterone. This suggests that chronic stress did not necessarily lead to impairment of endocrine function of the testes in the rat. |
