Interaction between nociceptin/orphanin FQ (N/OFQ) and GABA in response to feeding

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Nociceptin/orphanin FQ (N/OFQ) and gamma aminobutyric acid (GABA) agonists have been shown to increase feed intake in mammals and birds. In this study, the effect of intracerebroventricular (icv) injection of the potent NOP receptor agonists Nociceptin (1-13) NH2, the GABAA receptor antagonist bicuculline, and the GABAA receptor agonist muscimol on feed intake in cockerels was investigated. The icv injection of N/OFQ and muscimol increases feed intake. The effect of N/OFQ on feed intake was strongly blocked by the injection of bicuculline whereas the effect of muscimol was stimulated by N/OFQ. These results suggest that N/OFQ may act at GABAA receptors or increases overflow of GABA in the brain of chickens to stimulate feeding. © 2006 Elsevier Inc. All rights reserved.




Tajalli, S., Jonaidi, H., Abbasnejad, M., & Denbow, D. M. (2006). Interaction between nociceptin/orphanin FQ (N/OFQ) and GABA in response to feeding. Physiology and Behavior, 89(3), 410–413.

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