History and purpose: Oxytocin is thought to be involved in ejaculations by increasing sperm quantity and contracting ejaculatory cells. V2 agonist, [deamino-Cys1,Val4,D-Arg8]-vasopressin (dDAVP), didn’t contract cells. Oxytocin and AVP-induced contractions had been weakly antagonized from the selective oxytocin antagonist, L-368899 but potently antagonized from the V1A antagonist, SR49059. The V1B antagonist SSR149415 didn’t antagonize AVP… Continue reading History and purpose: Oxytocin is thought to be involved in ejaculations