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  • Title: [Oxytocin as a putative factor in the control of periodic and synchronized neurosecretory bursts of oxytocinergic cells (author's transl)].
    Author: Freund-Mercier MJ, Richard P.
    Journal: C R Seances Acad Sci III; 1982 Mar 15; 294(11):497-500. PubMed ID: 6807509.
    Abstract:
    During suckling, the intramammary pressure and the electrical activity of oxytocinergic cells in the paraventricular nucleus were recorded simultaneously in urethane-anaesthetized Rats. Injection of an oxytocin antagonist (1 microliter d(CH2)5OVT 10(-3) or 10(-4) M) into the 3rd ventricle, inhibited both frequency and amplitude of neurosecretory bursts and milk-ejections. The same effect was observed when the milk-ejection reflex was previously activated by the intraventricular injection of oxytocin (1 microliter--10(-6) M). Thus, oxytocin might regulate the frequency and amplitude of oxytocinergic cells' neurosecretory bursts and could be involved in their synchronism.
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