RESUMO
This study was performed with the purpose to elucidate the possibility of using Technetium 99m (Tc) as a marker for the evaluation of male sex glandular activity of the rat. Tc was injected into the femoral vein of the rat and its cpm was counted. The studies have shown that 22 hours after injection of Tc the material was accumulated in the glands in much higher values than its activity in the blood (which was only 1% of its zero time activity). In the rat, the dorsolateral coagulating gland has the highest capacity of accumulating Tc. Studies on castrated rats, or rats treated with testosterone enanthate, revealed that the activity of the cells in the glands and the volume of the excretion play an important role in the evaluation of the results. Thus, the use of Tc 99m in evaluating male accessory glands activity is a new interesting approach in the study of the physiology of the male sexual glands.