补充物在创伤性脑损伤后传播视觉系统病理
Davis Borucki1, Baerbel Rohrer1, Stephen Tomlinson1
1Medical University of South Carolina.
Research square
|March 11, 2024
概括
创伤性脑损伤 (TBI) 导致大脑视觉中心的补体激活和微质突触修剪. 抑制补充剂可以保护突触并改善TBI后的视力.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 眼科医生 眼科 眼科
背景情况:
- 创伤性脑损伤 (TBI) 可以导致视觉系统的延迟和渐进性障碍.
- 神经炎症,特别是补充激活,与TBI的发病有关.
- 补充剂在TBI引起的视力损失中的作用仍然在很大程度上未被探索.
研究的目的:
- 研究补充激活在TBI引起的视力缺陷中的作用.
- 为了检查补充抑制对脊侧生殖核 (dLGN) 和视网膜TBI后神经炎症和突触完整性的影响.
- 为了将神经炎症变化与TBI后视觉功能结果相关联.
主要方法:
- 用于控制单边皮层冲击 (TBI) 的小鼠模型.
- 神经炎症,组织病理和视觉功能被评估为急性和慢性.
- 使用CR2-Crry后TBI抑制了补充剂的激活.
主要成果:
- 创伤诱导了补充C3沉积和微质激活,并在DLGN中进行突触内化.
- 补充抑制 (CR2-Crry) 减少了C3沉积,微质激活和突触修剪.
- 在TBI后的亚急性和慢性时间点,CR2-Crry治疗保留了突触密度,改善了视力敏度.
- 没有观察到视网膜层厚度的显著变化.
结论:
- 创伤触发了DLGN内的突触的补充介导的微细胞化,导致视觉缺陷.
- 补充抑制是缓解TBI相关视力损失的潜在治疗策略.
- 向补充剂激活可以通过保持DLGN突触完整性来保持视觉功能.
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