Abstract
Pre-and post-operative testosterone levels were measured to study the effect of surgical stress on testicular funcion.The results are summarized as follows.(1) Plasma testosterone levels tended to fall for a few days after surgery and return to the pre-operative levels in a week or so.(2) Plasma testosterone levels showed a marked decrease and the return to the pre-operative levels delayed more as the sugical stress increased.(3) Plasma testosterone levels did not decrease under a considerable surgical stress if it was given temporarily.A decrease in plasma testosterone levels was necessitated when the surgicasl stress continued for a definite period of time.It was concluded, from these results, that surgical stress lowered testosterone secretion.
