在创伤模型中,具有低和高氧亲和度的聚合人体血红蛋白
Cynthia R Muller1, Vasiliki Courelli1, Cynthia Walser1
1Department of Bioengineering, University of California San Diego, San Diego, CA.
概括
紧张状态的聚合血红蛋白 (PolyhHb) 在创伤模型中有效地恢复了血液动力学和降低了器官毒性,与放松状态的PolyhHb相比. 这表明,紧张状态的PolyHb是严重创伤的优越复苏液.
科学领域:
- 生物医学工程 生物医学工程
- 创伤研究 创伤研究
- 复苏科学复苏科学 复苏科学
背景情况:
- 严重的创伤往往导致出血性休克 (HS),需要有效的复苏策略.
- 聚合人体血红蛋白 (PolyhHb) 作为血液替代品进行了研究.
- 不同的PolyhHb构造状态 (紧张和放松) 可能会影响疗效和毒性.
研究的目的:
- 为了比较紧张状态 (T) 和放松状态 (R) PolyhHb在创伤性脑损伤 (TBI) 和HS后的血液动力复苏疗效.
- 为了评估T状态和R状态PolyHb在接受HS的几内亚猪 (GPs) 中的相对毒性.
主要方法:
- 患有TBI和HS的Wistar大鼠用全血,T状态PolyHb或R状态PolyHb恢复了生命.
- 被HS感染的几内亚猪被再注入了T状态或R状态的PolyHb.
- 评估了血液动力学参数 (MAP) 和重要器官损伤 (肝脏,脏,心脏) 和炎症的标志物.
主要成果:
- 与R状态PolyHbb相比,T状态PolyHb和全血导致大鼠中较好的平均动脉压 (MAP) 恢复.
- 在全科医生中R-state PolyhHb复苏增加了肝损伤,损伤和全身炎症的标志物.
- 在一般医生中,R状态的PolyHb还导致心脏损伤标志物 (热素) 的增加.
结论:
- 在T状态PolyHb在TBI和HS的老鼠模型中表现出卓越的血液动力学恢复能力.
- 与海豚R状态PolyHb相比,T状态PolyHb对重要器官的毒性降低.
- 这些发现支持T状态PolyHb的潜力,作为一种更有效,更安全的重振液,用于严重创伤.
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