MiR-135b-5p通过抑制JAK2-STAT3-介导的肝素上调来缓解赛沃兰诱导的术后认知功能障碍
Feng-Hui Guo1, Tian Xie1, Jin-Meng Kang1
1Department of Anesthesiology, The Fourth Affiliated Hospital of Hebei Medical University, Shijiazhuang 050011, Hebei, PR China.
Brain research bulletin
|February 20, 2026
概括
微RNA-135b-5p通过JAK2-STAT3通路调节铁代谢,保护免受塞沃兰诱导的认知功能障碍. 这项研究揭示了术后认知功能障碍的潜在治疗标.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 麻醉学 麻醉学
背景情况:
- 手术后认知功能障碍 (POCD) 是麻醉和手术后的常见并发症.
- 大脑铁代谢失调与POCD的发病有关.
- 塞沃兰麻醉会破坏铁的平衡,从而导致POCD.
研究的目的:
- 为了研究微RNA-135b-5p (miR-135b-5p) 在赛沃兰诱导的POCD中的作用.
- 为了确定miR-135b-5p是否抑制JAK2-STAT3通路并减少肝素的产生.
- 为了探索miR-135b-5p作为sevoflurane诱导的POCD潜在的治疗策略.
主要方法:
- 建立了sevoflurane诱导的认知障碍的小鼠模型.
- 使用新型物体识别和恐惧调节测试评估认知功能.
- 分析了分子和结构变化,包括铁代谢标记物,氧化应激指标和JAK2-STAT3通路激活.
主要成果:
- 暴露于赛沃氨酸会损害认知功能,改变大脑的铁平衡,增加氧化应激.
- 塞沃弗兰可以调节JAK2-STAT3酸化和肝素的表达.
- 施用MiR-135b-5p减轻了这些由sevoflurane引起的变化,但其保护作用被JAK2激活逆转.
结论:
- 在小鼠中,MiR-135b-5p可以减轻sevoflurane诱导的POCD.
- 这种保护作用是由通过JAK2-STAT3通路抑制肝素表达的介导.
- 向miR-135b-5p代表了治疗sevoflurane诱导的POCD的有前途的治疗途径.
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