相关实验视频
Updated: Jan 10, 2026
07:44
Localization of the Locus Coeruleus in the Mouse Brain
Published on: March 7, 2019
19.0K
氧能侧向下丘脑 - 前环状皮质电路缓解慢性压力诱导的焦虑类行为
Danlei Liu1, Xuefeng Zheng2, Laijian Wang2
1Department of Gastroenterology, The First Affiliated Hospital of Jinan University, Guangzhou 510630, China.
Current biology : CB
|November 26, 2025
概括
慢性压力会引发焦虑. 从侧向下丘脑到前带带皮质的新发现的素 (ORX) 途径减轻了类似焦虑的行为,提供了潜在的治疗点.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 行为科学 行为科学
背景情况:
- 慢性压力是焦虑障碍的一个重要因素.
- 压力引起的焦虑背后的神经回路和分子机制尚未完全理解.
- 素 (ORX) 涉及压力行为,但其在焦虑调节中的作用尚不清楚.
研究的目的:
- 识别和描述涉及调节慢性压力诱导焦虑类行为的奥雷克辛能神经电路.
- 为了研究这种电路中素2受体 (OX2R) 的作用.
- 探索LH-ACC途径作为焦虑障碍的潜在治疗标.
主要方法:
- 利用化学遗传学来操纵横向下丘脑 (LH) 中的氧化神经元.
- 研究的神经活动和从LH素 (Orx) 神经元到前带皮质 (ACC) 的投射.
- 研究了ACC中激活或阻断素受体 (OX2R和OX1R) 对遭受慢性不可预测轻度压力 (CUMS) 的小鼠焦虑类行为的影响.
主要成果:
- 在表现出焦虑类行为的CUMS小鼠中,LHOrx神经元被抑制.
- 化学遗传激活LHOrx神经元可以减少类似焦虑的行为.
- 通过ACC中的OX2R作用的LHOrx-ACC通路,缓解了CUMS诱导的焦虑类行为.
结论:
- 一个从LH到ACC的新的OREXINERGIC电路调节了慢性压力诱导的焦虑.
- 激活LHOrx-ACC通路会产生由OX2R调解的抗焦虑作用.
- 这种氧化电路代表了焦虑和与压力相关的疾病的潜在治疗标.
相关概念视频
01:37Hypothalamic-Pituitary Axis
65.4K
The response to stress—be it physical or psychological, acute or chronic—involves activation of the Hypothalamic-Pituitary-Adrenal (HPA) axis. The HPA axis is part of the neuroendocrine system because it involves both neuronal and hormonal communication. Its function is to regulate homeostatic systems—metabolic, cardiovascular, and immune—providing the necessary means to respond to a stressor.
65.4K
01:25The Sympathetic Nervous System
102.6K
Overview
102.6K
01:24Physiological Foundation of Stress
523
Stress triggers a coordinated physiological response involving the sympathetic nervous system (SNS) and the hypothalamic-pituitary-adrenal (HPA) axis. This dual activation ensures that the body is prepared for both immediate and prolonged stress management. The process begins with the perception of a stressor. This initial phase activates the SNS, leading to the rapid release of adrenaline (epinephrine) from the adrenal glands.
Role of the Sympathetic Nervous System
Adrenaline triggers the...
Role of the Sympathetic Nervous System
Adrenaline triggers the...
523
01:30Regulation of Food Intake
2.3K
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...
2.3K
01:30Stress and Mental Health
581
Chronic stress profoundly affects mental health, significantly influencing mood, behavior, and overall quality of life. Research closely links chronic stress with mental health conditions such as depression, anxiety, and substance use disorders. Ongoing exposure to stress can lead to physiological and psychological changes, initiating a cycle of emotional distress and maladaptive coping mechanisms.
Individuals with depression often experience challenges in both their personal and professional...
Individuals with depression often experience challenges in both their personal and professional...
581