Spiperone (hydrochloride)

Spiperone hydrochloride (Spiroperidol hydrochloride) is a selective dopamine D2 receptor (Ki values of 0.06 nM, 0.6 nM, 0.08 nM, ~350 nM, ~3500 nM for D2, D3, D4, D1 and D5 receptors, respectively) and 5-HT2A/5-HT1A receptor (Kis of 1 nM/49 nM) antagonist. Spiperone hydrochloride is also a selective α1B-adrenoceptor antagonist. Spiperone hydrochloride activates calcium-activated chloride channel (CaCC). Antipsychotic and anti-inflammatory activities[1][2][3][4][5].

[1]P Seeman, et al. Dopamine receptor pharmacology. Trends Pharmacol Sci. 1994 Jul;15(7):264-70.|[2]Lihua Liang, et al. Spiperone, identified through compound screening, activates calcium-dependent chloride secretion in the airway. Am J Physiol Cell Physiol. 2009 Jan;296(1):C131-41.|[3]Long Tai Zheng, et al. The antipsychotic spiperone attenuates inflammatory response in cultured microglia via the reduction of proinflammatory cytokine expression and nitric oxide production. J Neurochem. 2008 Dec;107(5):1225-35.|[4]Richard A Glennon, et al. Ketanserin and spiperone as templates for novel serotonin 5-HT(2A) antagonists. Curr Top Med Chem. 2002 Jun;2(6):539-58.|[5]Andrea E Errasti, et al. Human umbilical vein vasoconstriction induced by epinephrine acting on alpha1B-adrenoceptor subtype. Am J Obstet Gynecol. 2003 Nov;189(5):1472-80.|[6]E G Skurikhin, et al. Effect of spiperone on mesenchymal multipotent stromal and hemopoietic stem cells under conditions of pulmonary fibrosis. Bull Exp Biol Med. 2014 May;157(1):132-7.