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补充成分5 (C5) 缺乏改善创伤性脑损伤后的认知结果,并增强补充抑制剂C1-Inh和CR2-Crry在小鼠模型中的治疗效果

Min Chen¹, Stephen R Edwards², Dhiraj Maskey¹

¹Centre for Advanced Imaging, The University of Queensland, St Lucia, Queensland, Australia.

Neurotrauma reports

|November 1, 2023

概括

补体系统会加剧创伤性脑损伤 (TBI). 在TBI模型中,抑制C3和C5aR1等补充成分改善了神经行为结果,并减少了脑损伤.

科学领域:

神经科学是一个神经科学.
免疫学免疫学免疫学
病理生理学病理生理学

背景情况:

补体系统是天生的免疫力的一个关键部分,显著恶化创伤性脑损伤 (TBI) 的结果.
了解补充剂在TBI中的作用对于开发有效治疗方法至关重要.

研究的目的:

研究抑制不同补充级联元件对TBI神经行为和神经病理后果的影响.
在TBI的小鼠模型中评估C1酶抑制剂 (C1-Inh),CR2-Crry (C3抑制剂) 和PMX205 (C5aR1对手) 的治疗潜力.

主要方法:

在C5充足和C5缺乏的小鼠中诱导了受控的皮质冲击损伤.
补充抑制剂 (C1-Inh,CR2-Crry,PMX205) 在TBI后一个小时被给予.
神经行为功能 (运动和认知) 和脑损伤大小在慢性阶段被评估.

主要成果:

CR2-Crry改善了运动功能,而CR2-Crry和PMX205在C5充足的小鼠中增强了TBI后的认知功能.
PMX205显著减少了大脑病变的大小.
与C5充足的小鼠相比,C5缺乏的小鼠表现出更好的认知功能.
缺乏C5增强了C1-Inh和CR2-Crry对运动功能和大脑损伤的有益影响.

结论:

C3和C3/C5/C5aR1通路在TBI引起的运动和认知缺陷中分别起着关键作用.
C5aR1信号与TBI相关的大脑损伤有关.
结合抑制补充成分,特别是C5,以及C1-Inh和CR2-Crry,为TBI提供了一个有前途的治疗策略.

关键词:

在C1-Inh中.在C5缺陷中.在CR2-Crry中使用.在PMX205中使用PMX205.互补系统是互补的系统.创伤性脑损伤是一种创伤性脑损伤

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