微结质BDNF/TrkB信号介导的KCC2功能障碍加剧早期中风后发作易感性
Jing Zhou1,2, Benjamin H Wang1, Jiangning Yu1
1Department of Neurosurgery and Neurology, Institutes of Brain Science, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institute of Biological Science, Zhongshan Hospital, Fudan University, Shanghai, China.
微质衍生的BDNF/TrkB信号损害了KCC2功能,增加了中风后发作的风险. 抑制这种途径或增强KCC2为中风后提供了一个新的治疗策略.
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
- 的研究研究.
背景情况:
- 脑卒中后发作是一种严重的并发症,治疗选择很少.
- 损坏的化共载体2 (KCC2) 活性会破坏化的平衡,导致神经元过度兴奋.
- 微质脑衍生神经营养因子 (BDNF) 在KCC2调节和中风后发作中的作用尚不清楚.
研究的目的:
- 研究微质BDNF/TrkB信号传递在KCC2功能障碍和中风后发作易感性中的作用.
- 确定预防或治疗早期中风后发作的潜在治疗点.
主要方法:
- 使用中脑动脉阻塞-再输液 (MCAO-R) 鼠标模型和海马神经元中的氧气-葡萄糖剥夺/氧化恢复 (OGD/R).
- 通过电生理学,EEG和行为测试评估KCC2功能,神经元刺激性和发作易感性.
- 采用药理学剂,包括米诺环素,K252a,furosemide (FUR) 和CLP290来调节微质活动,TrkB信号传递和KCC2功能.
主要成果:
- MCAO-R和OGD/R降低了膜KCC2表达,使GABA平衡潜力脱极化 (EGABA),并增加了神经元刺激性.
- 药理学KCC2增强剂 (FUR,CLP290) 抑制了型活动,增加了发作值.
- 抑制微质或TrkB恢复了KCC2表达,使EGABA正常化,并减少了发作的严重程度.
结论:
- 微质衍生BDNF/TrkB信号传递在早期中风后发作中关键调解KCC2功能障碍.
- 向微质激活,TrkB信号传递或KCC2功能是中风相关的有希望的治疗策略.
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