社交压力通过肠道粘膜区的β-上腺素驱动的氧化压力恶化结肠炎
Elisa Caetano-Silva1,2, Miranda Hilt3, Ivan Valishev1,4
1Department of Health and Kinesiology, University of Illinois at Urbana-Champaign, 906 S Goodwin Ave, Urbana, IL 61801, USA.
bioRxiv : the preprint server for biology
|August 12, 2025
概括
社会压力通过β-上腺和NADPH氧化酶途径为肠道的炎症做准备. 阻止这些通路可能会治疗压力加剧的炎症性肠病 (IBD).
科学领域:
- 神经免疫学 神经免疫学
- 胃肠病学 胃肠病学
- 微生物组研究的研究.
背景情况:
- 心理压力是炎症性肠病 (IBD) 的危险因素.
- 链接压力与IBD病原体的机制尚未完全理解.
- 不同的压力模式激活不同的神经免疫通路.
研究的目的:
- 为了研究社会压力如何使肠道对炎症敏感.
- 为了识别介导压力诱导的肠道炎症的神经内分泌通路.
- 探索压力加剧IBD的治疗目标.
主要方法:
- 小鼠被暴露在社会干扰 (SDR) 压力中.
- 药理学抗剂向上腺素,葡萄糖皮质激素和CRHR1通路.
- 分析了肠上皮细胞 (IEC) 基因表达和微生物群.
- 使用了疾病模型 (Citrobacter rodentium感染,DSS诱导的大肠炎).
- 进行了NADPH氧化酶抑制剂 (apocynin) 的治疗.
主要成果:
- 在IEC中,SDR上调了Duox2,Duoxa2和No2,通过β-上腺素阻塞逆转.
- 由SDR诱导的肠道微生物失调症,由醇拯救.
- 压力加剧了结肠炎的严重程度,增加了Duox2,No2和Ccl2的表达.
- 阿波基尼减少了氧化应激,减轻了体重减轻和缓解大肠炎.
结论:
- 社会压力通过β-上腺体信号和NADPH氧化酶使肠道对炎症敏感.
- β-上腺和NADPH氧化酶通路是压力诱导的肠道炎症的关键媒介.
- 针对这些途径为压力加剧的IBD提供了潜在的治疗策略.
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