在小鼠中,静脉神经元将运动恶心,行为温度调节和代谢平衡联系在一起
Longlong Tu1, Xing Fang2, Yongjie Yang2
1Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA. Lucas.Tu@bcm.edu.
Nature metabolism
|March 22, 2025
概括
科学家们确定了大脑中的特定神经元 (MVePCGlu),这些神经元会导致运动恶心和低温. 准这些神经元可能为运动恶心和肥胖提供新的治疗方法.
科学领域:
- 神经科学是一个神经科学.
- 生理学 生理学 生理学
- 代谢过程中的代谢.
背景情况:
- 运动性疾病与体温和新陈代谢有关,但具体的大脑途径尚不清楚.
- 了解运动病的神经基础对于开发有效的治疗方法至关重要.
研究的目的:
- 为了确定负责运动诱导的低温和运动恶心的神经回路.
- 在这些过程中调查中介性前庭细胞核 (MVePC) 神经元在这些过程中的作用.
- 探索针对这些神经元的治疗潜力,以治疗运动恶心和代谢障碍.
主要方法:
- 在小鼠中利用光遗传学和化学遗传学来操纵特定的神经元群体.
- 记录神经元活动,以响应运动刺激.
- 评估生理反应,包括体温和代谢参数.
- 通过检查MVePC和侧侧核 (LPBN) 之间的连接来研究神经通路.
主要成果:
- 在MVePC (MVePCGlu) 中确定了谷氨酸性神经元,作为运动诱导低温的关键媒介.
- 证明了对运动敏感的MVePCGlu神经元的重新激活可以在小鼠中诱导类似运动性疾病的行为.
- 显示MVePCGlu神经元向LPBN发出信号以诱导低温.
- 发现抑制MVePC-LPBN电路可以防止运动诱导的低温.
- 揭示了MVePCGlu神经元的慢性抑制可以预防饮食诱导的肥胖和改善葡萄糖平衡,而不会影响食欲.
结论:
- MVePCGlu神经元对于调解低温和疾病对运动反应至关重要.
- MVePCGlu到LPBN通路对于运动诱导的低温症至关重要.
- 准MVePCGlu神经元是一个有前途的策略来治疗运动病.
- MVePCGlu神经元代表了管理肥胖和改善代谢健康的潜在治疗点.
相关概念视频
Equilibrium and Balance
4.3K
The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
4.3K
The Vestibular System
39.3K
The vestibular system is a set of inner ear structures that provide a sense of balance and spatial orientation. This system is comprised of structures within the labyrinth of the inner ear, including the cochlea and two otolith organs—the utricle and saccule. The labyrinth also contains three semicircular canals—superior, posterior, and horizontal—that are oriented on different planes.
39.3K
Pathophysiology of Vomiting
270
Vomiting is a complex physiological response to expel harmful or irritating substances from the body. It's a defensive mechanism triggered by stimuli like poisons, microbial toxins, cytotoxic drugs, and mechanical abdominal distension. The process is centrally coordinated by the vomiting (or emetic) center located in the medulla of the brainstem. This area, rich in muscarinic M1, histamine H1, neurokinin 1 (NK1), and serotonin 5-HT3 receptors, coordinates the act of vomiting through...
270
Major Somatic Sensory Pathways
838
Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the...
838
Indirect Motor Pathways
1.4K
The indirect motor or extrapyramidal pathways originate in the brainstem, the lower portion of the brain that connects it to the spinal cord. They consist of several distinct tracts, each with specialized functions. The four main tracts of the indirect motor pathways are the vestibulospinal tract, the reticulospinal tract, the tectospinal tract, and the rubrospinal tract.
The vestibulospinal tract originates in the vestibular nuclei of the brainstem. The vestibular system detects changes in...
The vestibulospinal tract originates in the vestibular nuclei of the brainstem. The vestibular system detects changes in...
1.4K
Functional Brain Systems: Reticular Formation
1.5K
The reticular formation is a complex network of gray and white matter located within the brainstem extending from the medulla to the midbrain.
Within the reticular formation, there are several distinct nuclei that can be classified into three broad categories. The Raphe nuclei are located along the midline of the brainstem. They are primarily known for their role in synthesizing and releasing serotonin, a neurotransmitter involved in regulating mood, appetite, sleep, and circadian rhythms. The...
Within the reticular formation, there are several distinct nuclei that can be classified into three broad categories. The Raphe nuclei are located along the midline of the brainstem. They are primarily known for their role in synthesizing and releasing serotonin, a neurotransmitter involved in regulating mood, appetite, sleep, and circadian rhythms. The...
1.5K


