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在老年小鼠的疼痛和的处理.

João M Braz1, Katherine Hamel1, Veronica Craik1

  • 1Department of Anatomy, University of California, San Francisco, San Francisco, California.

The journal of pain
|July 23, 2023
PubMed
概括
此摘要是机器生成的。

老龄化减少了小鼠的疼痛和敏感性,但老年小鼠在神经受伤后仍然会产生过敏性. 这表明,衰老对基线与损伤后疼痛处理有相反的影响.

关键词:
疼痛 疼痛 疼痛 疼痛衰老的衰老 衰老的衰老一个,一个,一个.这里是鼠标鼠标鼠标鼠标鼠标鼠标.性二重形性质性质二重形性质.

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科学领域:

  • 神经科学是一个神经科学.
  • 老年学是一门学科.
  • 疼痛研究 疼痛研究

背景情况:

  • 衰老与慢性疼痛患病率的增加有关.
  • 临床前疼痛研究往往缺乏老年动物模型.
  • 了解与年龄相关的疼痛处理对于治疗开发至关重要.

研究的目的:

  • 为了比较年轻和老年小鼠的疼痛和敏感度.
  • 研究对刺激和神经损伤的反应中的与年龄相关的差异.
  • 探索衰老对疼痛处理机制的影响.

主要方法:

  • 在年轻 (6个月大) 和老年 (22-24个月大) 小鼠中比较机械,热和引起的反应.
  • 在原始和神经受伤的条件下评估疼痛和的敏感性.
  • 对神经损伤后的微质和天体细胞标记物的免疫组织化学分析.

主要成果:

  • 与年轻小鼠相比,老年小鼠对机械,热和刺激的敏感性降低.
  • 经过神经损伤后,老年小鼠发展出机械过敏,包括逆侧.
  • 观察到与年龄有关的神经损伤诱导的质标志物表达的ipsilateral与contralateral比率的下降.

结论:

  • 衰老对基线疼痛/敏感性和损伤后疼痛处理有相反的影响.
  • 老年小鼠表现出基线敏感性降低,但在神经受伤后发展出显著的过敏性.
  • 这些发现强调了衰老在疼痛和的途径中的复杂作用,影响了临床前研究.