“Intracerebroventricular somatostatin infusion significantly increased plasma oxytocin secretion in both virgin female and pregnant rats.”
“The experiments indicate that somatostatin neurones in the NTS are activated during parturition but, because the direct effects of somatostatin on oxytocin neurones are inhibitory, this direct pathway does not appear to contribute to enhanced oxytocin release at this time, although indirect somatostatin effects may do so.”