Home Endocrine Regulations 2004 Endocrine Regulations Vol.38, p.23-28, 2004

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Quarterly, 50 pp. per issue 
Founded: 1967
ISSN 1210-0668
E-ISSN 1336-0329

Published in English

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Endocrine Regulations Vol.38, p.23-28, 2004

Author: Monika Orlowska-Majdak

Abstract: Objectives. A few compounds function as the excitatory amino acid (EAA) transmitters in the central nervous system (CNS), but glutamate (Glu) is the most important. Data on Glu participation in the control of vasopressinergic (AVP-ergic) and oxytocinergic (OXT-ergic) neuronal activity have been collected mainly on the basis of observations of hypothalamic AVP-ergic and OXT-ergic neurons. In vivo and in vitro experiments have demonstrated that Glu enhances bioelectric activity of the aforementioned neurons and increases AVP and OXT release. However, inhibitory effect of Glu on AVP-ergic neurons, mediated by local GABA-ergic interneurons, is also possible. Both ionotropic and metabotropic receptors participate in EAA effect on AVP-ergic and OXT-ergic neurons. EAA involvement in AVP and OXT release after osmotic stimuli and in OXT release during the milk ejection reflex has been demonstrated. Recent findings demonstrated that EAA enhanced AVP release into the extracellular fluid of hippocampus in the rabbit.

Keywords: Vasopressinergic and oxytocinergic neurons – Excitatory amino acids – Hypothalamus – Hippocampus – Glutamate
Year: 2004, Volume: 38, Issue: Page From: 23, Page To: 28

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