PNU 142633 is a very selective, high affinity SR-1D agonist (Ki values are 6 and > 18000 nM at human SR-1D and SR-1B, respectively). PNU 142633 blocks neurogenic plasma protein extravasation and inhibits sympathetically-induced tachycardic responses in vivo.
Roon et al (1999) Bovine isolated middle cerebral artery contractions to antimigraine drugs. Naunyn-Schmied.Arch.Pharmacol. 360 591. McCall et al (2002) Preclinical studies characterizing the anti-migraine and cardiovascular effects of the selective 5-HT1D receptor agonist PNU-142633. Cephalalgia 22 799. Sanchez-Lopez et al (2003) Pharmacological profile of the 5-HT-induced inhibition of cardioaccelerator sympathetic outflow in pithed rats: correlation with 5-HT1 and putative 5-ht5A/5B receptors. Br.J.Pharmacol. 140 725.