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首页> 外文期刊>American Journal of Physiology >Blockade of orexin receptors with Almorexant reduces cardiorespiratory responses evoked from the hypothalamus but not baro- or chemoreceptor reflex responses
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Blockade of orexin receptors with Almorexant reduces cardiorespiratory responses evoked from the hypothalamus but not baro- or chemoreceptor reflex responses

机译:用Almorexant阻断orexin受体会降低下丘脑引起的心肺反应,但不会减轻压力感受器或化学感受器的反射反应

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摘要

Orexin has potent effects on the central autonomic and respiratory networks, producing hypertension, -tachycardia, and hyperventilation when injected centrally (3, 23, 24, 35-37, 40, 41). It is therefore likely that orexin contributes to the cardiorespiratory effects evoked by stimulation of the hypothalamic defense area. Indeed, a previous study in orexin knockout mice showed a marked reduction of the cardiovascular response to bicuculline injections in the PeF (19). However, this needs to be confirmed in normal animals with a more direct approach, such as pharmacological blockade of orexin receptors. There are two orexin receptors (OxRl and OxR2) on which orexin can act; therefore to test orexin effects, both receptors must be blocked at the same time, ideally with a dual receptor antagonist.
机译:食欲素对中枢植物神经系统和呼吸系统具有强效作用,当进行中枢注射时会产生高血压,心动过速和过度换气(3、23、24、35-37、40、41)。因此,食欲肽可能通过刺激下丘脑防御区而引起心肺功能。确实,先前对orexin基因敲除小鼠的研究表明,对PeF中双小分子注射的心血管反应明显降低(19)。但是,这需要在正常动物中用更直接的方法来证实,例如对orexin受体的药理阻断。 orexin可以作用于两个orexin受体(OxR1和OxR2)。因此,要测试orexin的作用,必须同时阻断两种受体,最好是用双重受体拮抗剂阻断。

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