布拉迪基宁2受体在实验性创伤性脑损伤后调解长期的神经认知缺陷
Antonia Clarissa Wehn1,2,3, Igor Khalin1,2,4, Senbin Hu1,2
1Institute for Stroke and Dementia Research, LMU University Hospital, LMU Munich, Munich, Germany.
Journal of neurotrauma
|May 31, 2024
概括
向布拉迪基宁2受体 (B2R) 可能减少创伤性脑损伤 (TBI) 后的慢性认知缺陷. 在TBI小鼠中,B2R缺乏保护免受长期海马体损伤和改善记忆.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 药理学 药理学是指药理学的学科.
背景情况:
- 在创伤性脑损伤 (TBI) 后,kallikrein-kinin系统在早期被激活.
- 布拉迪基宁2受体 (B2R) 调解急性TBI,但其慢性作用尚不清楚.
- 了解B2R的长期影响对于TBI治疗至关重要.
研究的目的:
- 为了研究B2R缺乏在实验性TBI后对大脑损伤和功能的长期影响.
- 评估B2R在创伤后慢性神经炎症和神经退行症中的作用.
主要方法:
- 控制皮层冲击 (CCI) TBI模型在B2R敲击 (KO) 和野生类型 (WT) 小鼠中.
- 纵向评估病变大小 (MRI),运动和记忆功能.
- 在TBI后90天,对神经炎症 (微质,CD45) 和质痕的免疫组织化学分析.
主要成果:
- 在皮层损伤大小上没有差异,但在B2R KO小鼠中减少了海马损伤,TBI后90天.
- B2R缺陷显著改善了学习和记忆功能,而不会影响运动技能.
- 在B2RKO小鼠中减少了微质激活和CD45+细胞透,表明慢性神经炎症减弱.
结论:
- 创伤后的慢性海马神经退行和认知缺陷是由涉及B2R的长期神经炎症介导的.
- 缺乏B2R可以减轻长期的神经炎症并保护认知功能.
- 抑制B2R是一种潜在的治疗策略,可以减少创伤后的长期神经认知缺陷.
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