ejactulation

Ejaculates (1651) obtained by masturbation from 88 donors were evaluated for count, motility, and kinetics. After the initial evaluation the ejaculates were frozen in liquid nitrogen, thawed 24 hr later, and assessed for postthaw motility and kinetics. The ejaculates were then divided into seventeen groups according to sperm count and evaluated to determine if direct relationships exist between prefreeze and thawed semen characteristics. The average sperm count was 151 X 10(6) sperm/ml. The freezing process resulted in a reduction of motility from a mean of 85% to a mean of 52%...

Thioridazine (3 mg/kg) and chlorimipramine (1.5-6.0 mg/kg) prolonged the ejaculation latency and increased the number of mounts but did not change the number of intromissions preceding ejaculation. Blockade of peripheral and central noradrenaline receptors by phentolamine and phenoxybenzamine respectively resulted in a suppression of all aspects of the sexual behavior with increasing doses. DL-5-HTP (25-100 mg/kg) in combination with an inhibitory of peripheral 5-HTP decarboxylase (benserazide, 25 mg/kg) produced, like chlorimipramine and thioridazine, a prolongation of ejactulation latency and an increase in the number of mounts preceding ejaculation...