YM 114

YM 114 is a 5-HT(3) receptor anatagonist.

YM114 (KAE-393) is a highly potent and selective (5-HT)3-receptor antagonist that does not affect Veratridine (HY-N6691)- or electrical stimulation-induced bradycardia in anesthetized rats. YM114 inhibits 2-methyl-5-HT (HY-19358)-induced Bezold-Jarisch reflex, which originates from (5-HT)3-receptor located on the endings of vagal afferent nerves in the heart[1].

[1] Yamano M, et al. Characteristics of inhibitory effects of serotonin (5-HT)3-receptor antagonists, YM060 and YM114 (KAE-393), on the von Bezold-Jarisch reflex induced by 2-Methyl-5-HT, veratridine and electrical stimulation of vagus nerves in anesthetized rats. Jpn J Pharmacol. 1995 Dec;69(4):351-6. DOI:10.1254/jjp.69.351