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首页> 外文期刊>Cytokine >Early increase of serum angiopoietin-2 are associated with early progression to death in experimental injury.
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Early increase of serum angiopoietin-2 are associated with early progression to death in experimental injury.

机译:血清血管生成素2的早期增加与实验性损伤中死亡的早期进展有关。

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摘要

Severe trauma induces systemic inflammatory response syndrome (SIRS) through the release of proinflammatory mediators. Angiopoietin-2 (Ang-2) is over-produced in sepsis and leads to dysfunction of endothelial cells and subsequent multiple organ dysfunction. In order to define the role of Ang-2 in lethal injury, 45 rabbits were studied; eight were administered anesthesia; 11 were sham-operated and 26 were subject to femoral injury. Concentrations of Ang-2, malondialdehyde (MDA), tumor necrosis factor-alpha (TNFalpha) and endotoxins (LPS) were determined in serum and of Ang-2 in tissues; vital signs and overall survival were recorded. Bacterial growth was quantitatively assessed in liver, spleen and lung of animal that died. Survival of injured animals was shorter than sham operated ones. Serum concentrations of Ang-2 at 4 h was greater among animals where death supervened early, i.e. within 48 h after injury than among rabbits that died later. That was also the case for systolic, diastolic and mean arterial pressures. Serum MDA and TNFalpha and tissue bacterial growth did not differ between rabbits that died early and rabbits that died late. Serum LPS remained below the limit of detection. These results suggest that circulating Ang-2 participates in the pathogenesis of SIRS after injury connected with early haemodynamic instability.
机译:严重的创伤通过释放促炎性介质而诱发全身性炎症反应综合征(SIRS)。血管生成素2(Ang-2)在脓毒症中过度产生,并导致内皮细胞功能障碍和随后的多器官功能障碍。为了确定Ang-2在致死性损伤中的作用,研究了45只兔子。八人接受了麻醉;假手术11例,股骨受伤26例。测定血清中Ang-2,丙二醛(MDA),肿瘤坏死因子-α(TNFalpha)和内毒素(LPS)的浓度;组织中Ang-2的浓度;记录生命体征和总体生存率。定量评估死亡动物的肝,脾和肺中的细菌生长。受伤动物的生存期短于假手术动物。在早期死亡的动物中(即受伤后48小时之内),在4 h时,Ang-2的血清浓度要高于后来死亡的兔子。收缩压,舒张压和平均动脉压也是如此。早期死亡的兔子和晚期死亡的兔子的血清MDA和TNFalpha以及组织细菌的生长没有差异。血清LPS保持在检测限以下。这些结果表明,循环Ang-2参与了早期血流动力学不稳定相关的损伤后SIRS的发病机制。

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