脑膜淋巴功能障碍导致经过实验性脑下关节下出血后的认知障碍
Yichen Cai1, Yanxin Shao2, Hui Yuan2
1The Second Affiliated Hospital, College of Medical Information and Artificial Intelligence, Institute of Brain Science and Brain-inspired Research, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong Province, 250117, China; Department of Neurology, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161002, China.
概括
脑下关节出血 (SAH) 幸存者经常面临由于脑膜淋巴管 (mLVs) 损坏而导致的认知问题. 在SAH后,VEGF-C疗法可以保护mLVs并改善认知功能.
科学领域:
- 神经科学是一个神经科学.
- 血管生物学 血管生物学
- 病理生理学 病理生理学
背景情况:
- 脑下关节出血 (SAH) 幸存者经常经历延迟的认知功能障碍,其潜在机制尚不清楚.
- 脑膜淋巴血管 (mLVs) 在脑液平衡和废物清除中发挥着至关重要的作用.
研究的目的:
- 调查脑膜淋巴血管 (mLVs) 在脑下关节出血 (SAH) 后认知缺陷的发展中的作用.
- 探索血管内皮生长因子C (VEGF-C) 在缓解SAH引起的认知障碍方面的治疗潜力.
主要方法:
- 在小鼠中,SAH通过注射内血液来诱导.
- 评估了SAH后的空间学习,记忆,海马体CA1神经元活动和mLV完整性.
- 在体内和体外研究了淋巴血管切除和VEGF-C疗法的效果.
- 研究了PI3K-AKT通路对VEGF-C的保护作用的参与.
主要成果:
- SAH导致认知功能受损,mLV碎片化和流体排水受损,在2个月后出现严重的缺陷.
- 淋巴管切除恶化了SAH引起的病理.
- VEGF-C降低了氧血球诱导的淋巴内皮细胞亡,抑制了粉样β沉积,并改善了认知功能障碍.
- VEGF-C对mLVs的保护作用是由PI3K-AKT通路激活的介导.
结论:
- 脑膜淋巴血管完整性和排水受到破坏,这对SAH后的认知障碍有很大影响.
- VEGF-C疗法对保持mLV功能和预防SAH后的延迟认知缺陷有希望.
- 针对VEGF-C介导的PI3K-AKT信号传递,代表了SAH诱导的认知功能障碍的潜在治疗策略.
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