肠内染色素细胞驱动内脏疼痛和焦虑
James R Bayrer1, Joel Castro2,3, Archana Venkataraman4
1Department of Pediatrics, University of California, San Francisco, San Francisco, CA, USA. james.bayrer@ucsf.edu.
Nature
|March 23, 2023
概括
肠染色素 (EC) 细胞是肠道疼痛和过敏的关键,特别是在女性身上. 激活这些细胞会导致持续的疼痛, 凸显它们在内脏疼痛和性别差异中的作用.
科学领域:
- 神经胃肠病学
- 内脏疼痛研究
- 肠道神经内分泌学
背景情况:
- 胃肠道 (GI) 的不适和内脏疼痛是常见的肠道疾病,如刺激性肠道综合征 (IBS).
- 这表明肠道疼痛的机制与性别有关.
- 肠内染色体 (EC) 细胞是肠道中的神经内分泌细胞, 检测刺激, 但它们在内脏疼痛和性别差异中的作用尚不清楚.
研究的目的:
- 研究肠染色素 (EC) 细胞在内脏疼痛和相关的性别差异中的作用.
- 为了确定EC细胞信号是否足够和必要的过敏性肠扩张.
- 探索EC细胞活动对类似焦虑的行为和血清激素信号的影响.
主要方法:
- 在体内 (增强和抑制) 操纵肠染色素 (EC) 细胞功能.
- 评估对肠道膨胀的过敏性
- 评估细菌短链脂肪酸异酸对EC细胞功能的影响.
- 观察类似焦虑的行为以及血清激素信号阻断的影响.
主要成果:
- 足以引起对肠道扩张的过敏性.
- 需要EC细胞来敏感化异酸盐,这是肠道炎症的一个因素.
- 长时间的EC细胞激活导致持续的内脏过敏,独立于炎症.
- EC细胞活动调节会影响类似焦虑的行为,这些行为通过阻断血清素而逆转.
- 雌性表现出EC细胞粘膜附带电路的强化作用,导致肠道疼痛的性别差异.
结论:
- 在急性和持续性胃肠道疼痛中,细胞粘膜传递信号起着至关重要的作用.
- EC细胞是理解和潜在治疗内脏过敏及其性别偏差的关键目标.
- 这些发现为研究内脏疼痛机制和性别差异的遗传模型提供了基础.
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