lemborexant (E2006)的临床前体内表征,这是一种用于睡眠/觉醒调节的新型双促食欲素受体拮抗剂。

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Beuckmann CT,上野T,中川M,铃木M,赤富S

lemborexant (E2006)的临床前体内表征,这是一种用于睡眠/觉醒调节的新型双促食欲素受体拮抗剂。

睡眠。2019年6月11日;42(6)。pii: 5421821。doi: 10.1093 /睡眠/ zsz076。

PubMed ID
30923834 (PubMed视图
摘要

研究目的:介绍lemborexant (E2006)临床前开发的体内研究结果,lemborexant是一种用于睡眠/觉醒调节的新型双促食欲素(下丘脑泌素)受体拮抗剂。方法:进行了啮齿动物(野生型大鼠和野生型和食欲素神经元缺陷[食欲素/ataxin-3 Tg/+]小鼠)研究,以评估单剂量口服lemborexant (1-300 mg/kg)对食欲素诱导的血浆促肾上腺皮质激素(ACTH)增加、运动活动、警觉状态测量(清醒、非快速眼动[非快速眼动]睡眠、快速眼动[REM]睡眠)、乙醇诱导的麻醉和运动协调的影响。多剂量口服lemborexant (30 mg/kg)对警戒状态指标的影响。活性比较剂为almorexant和唑吡坦。单剂量lemborexant在小鼠和大鼠体内进行药代动力学研究。结果:Lemborexant抑制了食欲素促进的大鼠ACTH的增加,因此表现出抑制食欲素信号通路。此外,lemborexant促进了野生型小鼠和大鼠的睡眠。Lemborexant促进快速眼动睡眠和非快速眼动睡眠的速度相同(快速眼动睡眠的比例没有变化)。相反,唑吡坦会减少快速眼动睡眠。 The sleep-promoting effect of lemborexant was mediated via the orexin-peptide signaling pathway as demonstrated by a lack of sleep promotion in orexin neuron-deficient mice. Chronic dosing was not associated with a change in effect size or sleep architecture immediately postdosing. Lemborexant did not increase the sedative effects of ethanol or impair motor coordination, showing good safety margin in animals. Pharmacokinetic/pharmacodynamic data for mice and rats were well aligned. CONCLUSIONS: These findings supported further clinical evaluation (ongoing at this time) of lemborexant as a potential candidate for treating insomnia and other sleep disorders.

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