cataplexy

Almorexant (ACT 078573) is a potent and competitive dual orexin 1 receptor (OX1) orexin 2 receptor (OX2) antagonist with Ki values of 1.3 and 0.17 nM for OX1 and OX2, respectively.

Potent and selective orexin OX2 receptor agonist (EC50 = 28 nM at human OX2 expressed in CHO cells). Displays approximately 100-fold selectivity for OX2 over OX1 (EC50 = 2.75 μM at human OX1 expressed in CHO cells). Depolarizes OX2-expressing histaminergic neurons in mouse brain slices. Increases wake time in wild type mice. Suppresses cataplexy-like symptoms in OX knockout mice. Nagahara et al (2015) Design and synthesis of non-peptide, selective orexin receptor 2 agonists. J.Med.Chem. 58 7931 PMID:26267383 |Irukayama-Tomobe et al (2017) Nonpeptide orexin type-2 receptor agonist ameliorates narcolepsy-cataplexy symptoms in mouse models. Proc.Natl.Acad.Sci.USA. 144 5731 PMID:28507129

YNT-185 is a nonpeptide, selective agonist of the orexin type-2 receptor (OX2R), with EC50 values of 0.028 μM for OX2R and 2.75 μM for OX1R. Additionally, YNT-185 effectively alleviates symptoms of narcolepsy-cataplexy in mouse models.

Almorexant hydrochloride (ACT 078573 hydrochloride) is an orally active dual orexin receptor antagonist that blocks the intracellular Ca2+ signaling pathway and, to a certain extent, blocks the excitatory effects of methamphetamine. Almorexant hydrochloride Induces apoptosis and can be used to study sleep disorders.

Firazorexton hydrate (TAK-994) is a brain-penetrant, orally active agonist of the orexin type 2 receptor (OX2R) with a potent EC50 of 19 nM, effectively reducing wakefulness fragmentation and cataplexy-like episodes in mouse models of narcolepsy [1].

OX2R agonist 1 is an OX2R activator with an EC50 of less than 100 nM. It is utilized in research related to narcolepsy and cataplexy.