Ogawa S, Kudo S, Kitsunai Y, Fukuchi S
Clin Endocrinol (Oxf). 1980 Jul;13(1):95-7. doi: 10.1111/j.1365-2265.1980.tb01027.x.
In this study changes in plasma oxytocin levels were determined before and after ejaculation in patients with abnormal spermatogenesis. Plasma oxytocin levels rose significantly after ejaculation (P < 0.001, n = 17). There was no obvious correlation between plasma oxytocin levels and sperm count, sperm motility or the number of abnormal forms. Oxytocin may play a role in the precipitation of ejaculation in males.
