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  • Title: A role for the area postrema in mediating cholecystokinin-stimulated oxytocin secretion.
    Author: Carter DA, Lightman SL.
    Journal: Brain Res; 1987 Dec 01; 435(1-2):327-30. PubMed ID: 2827855.
    Abstract:
    We have investigated the role of the area postrema (AP) in mediating the neurohypophyseal hormone response to peripheral administration of nausea-producing agents in rats. In control animals, lithium chloride (LiCl) and apomorphine (APO) caused a rise in plasma levels of immunoreactive oxytocin (OT) and arginine-vasopressin (AVP), whereas sulphated cholecystokinin octapeptide (CCK-8s) stimulated OT secretion only. Rats with AP lesions exhibited a similar OT and AVP response to LiCl and APO but the OT response to CCK-8s was significantly diminished. The results indicate that the selective stimulation of OT secretion by CCK-8s is partly mediated via the AP. Although the nausea-producing effects of LiCl and APO may involve the AP, the neuroendocrine effects of these agents may well be mediated via actions outside the AP.
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