Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-5518
Ahmadi, S; Liebel, J T; Zeilhofer, H U (2001). The role of the ORL1 receptor in the modulation of spinal neurotransmission by nociceptin/orphanin FQ and nocistatin. European Journal of Pharmacology, 412(1):39-44.
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Nociceptin/orphanin FQ and nocistatin are two neuropeptides with opposing effects on spinal neurotransmission and nociception. Nociceptin/orphanin FQ selectively suppresses excitatory glutamatergic neurotransmission, while nocistatin selectively interferes with glycinergic and gamma-aminobutyric acid (GABA)-ergic transmission. Here, we performed whole-cell patch-clamp recordings from superficial rat spinal cord dorsal horn neurons to investigate the role of the opioid receptor-like (ORL)1 receptor for modulatory actions of these peptides. The partial ORL1 receptor antagonist [phe1psi(CH(2)-NH)Gly(2)]nociceptin-(1-13)NH(2) competitively reversed the effects of nociceptin/orphanin FQ on excitatory neurotransmission (estimated pA(2) 6.43), but left the suppression of inhibitory synaptic transmission by nocistatin unaffected. These results indicate that the inhibitory action of nociceptin/orphanin FQ on glutamatergic transmission is mediated via ORL1 receptors, while nocistatin acts via a different so far unidentified receptor.
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|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||04 Faculty of Medicine > Institute of Pharmacology and Toxicology|
|Dewey Decimal Classification:||570 Life sciences; biology
610 Medicine & health
|Date:||19 January 2001|
|Deposited On:||26 Mar 2009 12:34|
|Last Modified:||20 Dec 2013 00:29|
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