Department of Anesthesia, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China.
Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA.
Int J Mol Sci. 2023 Apr 4;24(7):6746. doi: 10.3390/ijms24076746.
Clinical studies have suggested that repeated exposure to anesthesia and surgery at a young age may increase the risk of cognitive impairment. Our previous research has shown that sevoflurane can affect neurogenesis and cognitive function in young animals by altering cyclophilin D (CypD) levels and mitochondrial function. Neural progenitor cells (NPCs) migration is associated with cognitive function in developing brains. However, it is unclear whether sevoflurane can regulate NPCs migration via changes in CypD. To address this question, we treated NPCs harvested from wild-type (WT) and CypD knockout (KO) mice and young WT and CypD KO mice with sevoflurane. We used immunofluorescence staining, wound healing assay, transwell assay, mass spectrometry, and Western blot to assess the effects of sevoflurane on CypD, reactive oxygen species (ROS), doublecortin levels, and NPCs migration. We showed that sevoflurane increased levels of CypD and ROS, decreased levels of doublecortin, and reduced migration of NPCs harvested from WT mice in vitro and in WT young mice. KO of CypD attenuated these effects, suggesting that a sevoflurane-induced decrease in NPCs migration is dependent on CypD. Our findings have established a system for future studies aimed at exploring the impacts of sevoflurane anesthesia on the impairment of NPCs migration.
临床研究表明,幼年时期反复接触麻醉和手术可能会增加认知障碍的风险。我们之前的研究表明,七氟醚通过改变亲环素 D(CypD)水平和线粒体功能来影响幼年动物的神经发生和认知功能。神经祖细胞(NPCs)的迁移与发育中大脑的认知功能有关。然而,七氟醚是否可以通过 CypD 的变化来调节 NPCs 的迁移尚不清楚。为了解决这个问题,我们用七氟醚处理了来自野生型(WT)和 CypD 敲除(KO)小鼠以及幼年 WT 和 CypD KO 小鼠的 NPCs。我们使用免疫荧光染色、划痕愈合实验、Transwell 实验、质谱和 Western blot 来评估七氟醚对 CypD、活性氧(ROS)、双皮质素水平和 NPCs 迁移的影响。结果表明,七氟醚增加了 CypD 和 ROS 的水平,降低了双皮质素的水平,并减少了 WT 小鼠体外和 WT 幼年小鼠体内 NPCs 的迁移。CypD 的 KO 减弱了这些作用,表明七氟醚诱导的 NPCs 迁移减少依赖于 CypD。我们的发现为未来研究探索七氟醚麻醉对 NPCs 迁移损伤的影响建立了一个系统。