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  • Title: Inputs from the A1 noradrenergic region to hypothalamic paraventricular neurons in the rat.
    Author: Tanaka J, Kaba H, Saito H, Seto K.
    Journal: Brain Res; 1985 Jun 03; 335(2):368-71. PubMed ID: 2988698.
    Abstract:
    Electrical stimulation of the rat A1 noradrenergic region produced excitation (77%) of the activity of putative vasopressin (VP)-secreting neurons in the paraventricular nucleus (PVN) and produced excitation (4%), inhibition (26%) and excitation-inhibition (11%) of the activity of PVN neurons that were not antidromically identified by neurohypophysial stimulation. The excitatory response of putative VP-secreting neurons was blocked by microiontophoretically applied phentolamine, an alpha-adrenoceptor antagonist, but not by timolol, a beta-adrenoceptor antagonist. The inhibitory response of unidentified PVN neurons, on the other hand, was blocked by timolol, but not by phentolamine.
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