Dexbrompheniramine is an antihistamine with anticholinergic properties. It is used to treat allergic diseases such as hay fever or urticaria. It can compete with histamine for H1 receptor sites on effector cells of the gastrointestinal tract, bloodvessel
Selective prostacyclin IP receptor antagonist (pKi = 8.3). Exhibits no affinity at other prostanoid receptors (EP1-4, FP and TP) in a radioligand binding assay. Demonstrates analgesic activity in rats. Orally bioavailable. Clark et al (2004) Discovery and SAR development of 2-(phenylamino) imidazolines as prostacyclin receptor antagonists. Bioorg.Med.Chem.Lett. 14 1053 PMID:15013022 |Jones et al (2006) Investigation of the prostacyclin (IP) receptor antagonist RO1138452 on isolated bloodvessel and platelet preparations. Br.J.Pharmacol. 149 110 PMID:16880763 |Bley et al (2006) RO1138452 and RO3244794: characterization of structurally distinct, potent and selective IP (prostacyclin) receptor antagonists. Br.J.Pharmacol. 147 335 PMID:16331286
Vindorosine has bloodvessel relaxation effect, possible underlying mechanisms involving the inhibition of Ca(2+) entry via L-type Ca(2+) channels in vascular smooth muscles.