核酸结合域类受体蛋白3炎症体有助于血管内皮屏障功能障碍和烧伤损伤后的休克
Huilin Yu1, Fengjie Lyu2, Zhe Cheng3
1Department of Cardiovascular Medicine, Cardiovascular Research Center, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing 400016, China; Cardiovascular Disease Laboratory of Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing 400016, China; Department of Pulmonary and Critical Care Medicine, the First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing 400016, China.
烧伤伤害会引发全身炎症和内皮屏障功能障碍. 抑制NLRP3炎症酶减少炎症和热,改善烧伤模型的结果.
科学领域:
- 生物医学科学 生物医学科学
- 炎症研究 炎症研究
- 血管生物学 血管生物学
背景情况:
- 烧伤后的系统性炎症导致血管内皮功能障碍和低血压.
- 核酸结合域类受体蛋白3 (NLRP3) 炎症体与炎症过程有关.
研究的目的:
- 调查NLRP3炎症酶在烧伤引起的血管内皮屏障功能障碍中的作用.
- 在烧伤模型中评估NLRP3抑制的治疗潜力.
主要方法:
- 建立了30%的总体表面积燃烧小鼠模型.
- 服用MCC950,一种NLRP3抑制剂,烧伤前后的伤害.
- 在体内和体外评估了血管透性,存活率,炎症性细胞因子和内皮细胞完整性.
主要成果:
- 烧伤损伤增加了血管透性,炎症性细胞因子 (IL-1β,IL-18) 和L-乳酸,同时降低了血压和生存率.
- 烧伤和烧伤血清诱导了内皮结蛋白损失,增加了MMP-9和NLRP3炎症组分,并促进了内皮细胞烧灭.
- 除了NLRP3蛋白表达外,MCC950治疗逆转了这些效应.
结论:
- NLRP3炎症酶激活是烧伤引起的炎症和内皮屏障功能障碍的关键调解者.
- 由NLRP3炎症酶激活驱动的内皮细胞灭,有助于烧伤后的冲击进展.
- 准NLRP3炎症体可能为管理烧伤并发症提供治疗策略.
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