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感应和进化适应在传感器机制驱动持续疼痛的驱动
1Department of Integrative Biology and Pharmacology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas, USA.
Brain, behavior and evolution
|November 30, 2023
概括
持续的 nociceptor 过活性 (PNH) 可能已经发展成为受伤后的适应性生存机制. 这种古老的细胞反应,在物种中得到保护,通过保护受伤的生物体免受进一步伤害来增强生存能力.
科学领域:
- 进化生物学是进化的生物学.
- 神经科学是一个神经科学.
- 疼痛研究 疼痛研究
背景情况:
- 慢性疼痛是一个重要的临床问题,有进化根源.
- 一些疼痛机制,现在适应不良,在历史上可能提高了生存率.
- 持续的 nociceptor 过度活动 (PNH) 是慢性疼痛的关键驱动因素.
研究的目的:
- 审查PNH作为对伤害的进化适应性反应的证据.
- 探索原始分子机制在驱动PNH.
- 了解跨物种的PNH底层的保存信号通路.
主要方法:
- 对各种物种 (无脊椎动物和脊椎动物) 的PNH现有文献的审查.
- 分子机制的分析,包括cAMP-PKA信号,信号和离子通道 (TRPV1, Nav1.8).
- 检查关于PNH的生存益处和功能连贯性的证据.
主要成果:
- 通过增强神经元活动的特征,PNH在各种物种中得到了记录.
- 有证据表明,PNH可以降低受伤动物的掠食风险.
- 保存的cAMP-PKA信号通路对于软体动物和哺乳动物的PNH维持至关重要.
- 脊椎动物已经为PNH进化了额外的调节器和离子通道.
结论:
- PNH是一种保存的生理适应,可以提高受伤动物的生存率.
- 古老的细胞应激反应很可能被挖掘出来,在早期的恶性受体中产生PNH.
- 了解PNH的进化基础,可以了解慢性疼痛机制.
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