素基因相关 (CGRP) -表达神经元在外侧侧侧区域调节疼痛诱导的睡眠障碍
Nicole Lynch1, Roberto De Luca1, Richard L Spinieli1
1Department of Neurology, Division of Sleep Medicine, and Program in Neuroscience, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, 02215, USA.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|June 30, 2025
概括
急性疼痛通过激活特定的大脑电路来显著扰乱睡眠. 阻断素基因相关 (CGRP) 神经元在副核缓解疼痛引起的睡眠损失,提供新的治疗点.
科学领域:
- 神经科学是一个神经科学.
- 睡眠科学 睡眠科学
- 疼痛研究 疼痛研究
背景情况:
- 睡眠和疼痛有着双向的关系.
- 急性疼痛模型对于理解睡眠障碍至关重要.
- 唤醒促进神经元在疼痛引起的觉醒中起作用.
研究的目的:
- 调查疼痛引起的睡眠障碍背后的神经回路.
- 确定双臂核 (PBN) 素基因相关 (CGRP) 表达神经元 (PBelCGRP) 在疼痛和睡眠中的作用.
- 确定涉及疼痛相关睡眠障碍的特定途径.
主要方法:
- 利用了两种急性疼痛模型:急性炎症性疼痛 (AIP) 和光遗传性疼痛 (Opto-Pain).
- 采用基因切除和光遗传抑制来阻止PBelCGRP神经元.
- 在特定的大脑区域 (SI-BF,CeA,BNST,LH) 的光遗传沉默的PBelCGRP通道.
- 在基底前脑 (SI-BF) 和杏仁体 (CeA) 中心核的 substantia innominata 中药学上阻断了CGRP和NMDA受体.
主要成果:
- AIP 减少了 45-50% 的睡眠,并降低了睡眠旋密度.
- 奥普托-疼痛模型复制了AIP诱导的睡眠损失.
- 阻止PBelCGRP神经元减弱了睡眠丧失.
- 路径沉默反转了睡眠障碍的顺序:SI-BF > CeA > BNST > LH.
- 在SI-BF和CeA的药理学阻塞也扭转了睡眠损失.
结论:
- PBelCGRP神经元是导致睡眠障碍的感觉刺激的关键中继器.
- 从SI-BF和CeA下降的途径对于疼痛引起的睡眠障碍至关重要.
- 在这些途径中准CGRP和NMDA受体可以治疗与疼痛相关的睡眠障碍.
相关概念视频
Pain
632
Pain serves as a critical warning signal that alerts the body to potential or actual harm. When mechanical pressure on the skin is intense, such as from a sharp pinch, the sensation transitions from touch to pain. Similarly, extreme temperatures, like a hot pot handle, convert the sensation of heat into pain. Pain can also result from overstimulation of other senses, such as blinding light, loud noise, or the intense heat from habañero peppers. This ability to sense pain is essential for...
632
Regulation of Food Intake
522
Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...
522
Sleep-Wake Cycles
1.6K
Sleep is an essential physiological process vital to maintaining overall well-being. The reticular activating system (RAS), a network of neurons in the brainstem, regulates wakefulness and sleep. While it may seem passive, sleep consists of distinct cycles, each with its unique characteristics and functions. Two key sleep phases are non-rapid eye movement (NREM) and rapid eye movement (REM).
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:
1.6K
Nociception
29.5K
Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain.
29.5K
Narcolepsy
204
Narcolepsy is a chronic sleep disorder characterized by pervasive, uncontrolled sleepiness and other sleep disturbances. One of its hallmark symptoms is an abrupt transition to REM sleep upon falling asleep, which causes symptoms typically associated with this phase to occur unexpectedly during wakefulness. These include the following symptoms, which typically last from a minute or two to half an hour.
204
Circadian Rhythms and Gene Regulation
4.2K
The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent...
4.2K


