Nociceptin, a novel opioid peptide, and its ORL1 receptor share structural
similarities with other opioid ligands and receptors. Although NC exerts ev
ident cardiovascular effects at a central and peripheral level, its role in
homeostatic mechanisms and disease states are just beginning to be underst
ood, as only recently selective receptor antagonists became available. In t
his review, some of the new observations regarding the cardiovascular actio
ns of NC, related peptides and newly synthesized receptor antagonists are d
iscussed. (C) 2000 Elsevier Science Inc. All rights reserved.