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相关概念视频

Analgesia and Pain Management01:25

Analgesia and Pain Management

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Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...
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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.
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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...
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Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
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Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
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相关实验视频

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The Sciatic Nerve Cuffing Model of Neuropathic Pain in Mice
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与衰老相关的PGC-1α降低促进了疼痛慢性化.

Xinbo Wu1, Liuyue Yang1, Zihua Li1

  • 1Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA.

Aging cell
|May 18, 2024
PubMed
概括
此摘要是机器生成的。

衰老会降低大脑中的PGC-1α,使老年小鼠的慢性疼痛恶化. 在主体体感官皮质 (S1) 中恢复PGC-1α可缓解这种疼痛,为老年人群的慢性疼痛提供潜在的治疗点.

关键词:
在PGC-1α中.老化的老化 衰老的老化鼠标 鼠标 鼠标 鼠标疼痛 疼痛 疼痛 疼痛人体感官皮层 (somatosensory cortex) 是一个感官皮层.

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科学领域:

  • 神经科学是一个神经科学.
  • 衰老研究研究 衰老研究
  • 疼痛管理 疼痛管理

背景情况:

  • 老龄化通常会降低体感官功能,但慢性疼痛在老年人中很普遍.
  • 主体体感官皮层 (S1) 在与年龄相关的疼痛处理和慢性化中的作用仍然不清楚.
  • 像骨关节炎这样的退行性疾病有助于老年人群的疼痛.

研究的目的:

  • 研究老化如何影响主要体感皮质 (S1) 中的疼痛处理 (S1).
  • 确定衰老是否会改变S1中的神经动态,并促进疼痛慢性化.
  • 探索过氧酶增殖器激活受体-联激活剂-1α (PGC-1α) 在与年龄相关的疼痛中的作用.

主要方法:

  • 使用了老年和成熟的成年老鼠模型,具有神经损伤.
  • 测量了 nociceptive 行为并分析了 S1.1 中的 PGC-1α 表达.
  • 使用静脉内两光子成像来评估S1神经动态.
  • 使用化学遗传学和病毒载体来操纵S1内部神经元活动和PGC-1α水平.

主要成果:

  • 与年轻小鼠相比,老年小鼠在神经受伤后表现出长期的感知行为.
  • 在老老鼠的S1中降低PGC-1α表达与长期疼痛相关.
  • 衰老和PGC-1α缺乏导致S1神经动态发生变化.
  • 调节S1内部神经元活动和PGC-1α水平影响了 nociceptive行为和神经动态.

结论:

  • 在S1中与衰老相关的PGC-1α减少有助于疼痛慢性化.
  • 改变S1神经动力学,特别是内部神经元中的PGC-1α水平,可以改善与年龄相关的慢性疼痛.
  • 在S1中准PGC-1α为老年人慢性疼痛管理提供了潜在的策略.