慢性压力诱导的血清素通过AMPK-PGC-1α轴损害了肠道上皮细胞的线粒体生物发生
Ding Yang1, Yan Sun2, Pei Wen1
1College of Veterinary Medicine, China Agricultural University, Beijing 100193, P.R. China.
International journal of biological sciences
|September 9, 2024
概括
慢性压力通过增加血清素 (5-基三胺,5-HT) 来破坏肠道健康. 这项研究揭示了5-HT损害了线粒体功能和肠道屏障完整性,为与压力相关的胃肠道疾病提供了新的治疗点.
科学领域:
- 胃肠病学 胃肠病学
- 神经科学是一个神经科学.
- 分子生物学分子生物学
背景情况:
- 慢性压力与胃肠道疾病有关.
- 血清素 (5-hydroxytryptamine,5-HT) 在压力诱导的肠道功能障碍中的作用尚不清楚.
研究的目的:
- 为了研究5-HT在慢性压力期间如何影响线粒体生物发生和肠道屏障完整性.
- 为了阐明底层的分子机制.
主要方法:
- 使用了一种慢性克制压力 (CRS) 鼠标模型.
- 分析了结肠粘膜结构,紧密的结节和5-HT水平.
- 进行了实验室细胞实验以研究5-HT对线粒体通路的影响.
- 研究了5-HT7受体和AMPK-PGC-1α轴的作用.
主要成果:
- 在CRS小鼠中,肠道5-HT含量升高,紧接口受损,粘膜结构受损.
- 血清素加剧了氧化应激,并减少了紧结蛋白的表达.
- 5-HT通过AMPK-PGC-1α轴通过5-HT7受体和cAMP-PKA信号传递抑制了线粒体生物发生.
- 抑制血清素合成或5-HT7受体恢复了肠道屏障功能和线粒体生物发生.
结论:
- 血清激素通过抑制AMPK-PGC-1α轴而加剧慢性压力诱导的肠壁干扰.
- 针对血清素通路,特别是5-HT7受体,为与压力相关的肠道问题提供了潜在的治疗策略.
更多相关视频
05:28A Chronic Immobilization Stress Protocol for Inducing Depression-Like Behavior in Mice
Published on: May 15, 2019
22.1K
06:55An Unpredictable Chronic Mild Stress Protocol for Instigating Depressive Symptoms, Behavioral Changes and Negative Health Outcomes in Rodents
Published on: December 2, 2015
22.4K
相关概念视频
Stress and Mental Health
86
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...
86
Psychoneuroimmunology: Cardiovascular Disease
26
Psychoneuroimmunology (PNI) is a multidisciplinary field that examines how psychological factors, particularly stress, interact with the immune system and impact physical health. Research in PNI has shown that chronic or traumatic stress can disrupt both the hypothalamic-pituitary-adrenal axis and the sympathetic nervous system. These disruptions contribute to serious health conditions, including cardiovascular diseases.
A key area of focus in PNI is the relationship between stress and coronary...
A key area of focus in PNI is the relationship between stress and coronary...
26
Hypothalamic-Pituitary Axis
59.7K
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.
59.7K
Psychoneuroimmunology: Diabetes and Cancer
26
Chronic stress has been linked to both the onset and progression of serious health conditions, including Type 2 diabetes and cancer. Type 2 diabetes, a widespread chronic illness, is closely associated with obesity and insulin resistance, both of which often worsen under stress. Studies indicate that men experiencing high levels of chronic stress face a 45% higher risk of developing diabetes compared to those with minimal stress. Stress triggers physiological responses that elevate blood...
26
Irritable Bowel Syndrome I: Introduction
257
Irritable Bowel Syndrome (IBS) is characterized by functional disturbances in the gastrointestinal system, presenting a cluster of symptoms without evident structural or biochemical abnormalities. It primarily affects the large intestine and may cause abdominal pain, bloating, excessive gas, diarrhea, constipation, or both.
IBS is a chronic condition that can persist over a long period or recur frequently.
The pathogenesis of IBS involves a complex interplay of the following factors:
Altered...
IBS is a chronic condition that can persist over a long period or recur frequently.
The pathogenesis of IBS involves a complex interplay of the following factors:
Altered...
257
Introduction to Stress and Lifestyle
89
Stress is a multifaceted response to events perceived as challenging or threatening, highlighting physical, emotional, cognitive, and behavioral reactions. Physically, stress can lead to fatigue, sleep disruptions, and various health issues such as frequent colds, chest pains, and nausea. Emotionally, it can manifest as anxiety, depression, irritability, and anger triggered by both minor and major life events. Cognitively, it may result in difficulty in concentration, memory, and...
89
