›› 1995, Vol. 15 ›› Issue (4): 198-200.

• 论文 • 上一篇    下一篇

急性重度缺氧引起大鼠血浆及多种组织内皮素水平异常

  

  1. 中国人民解放军海军总医院
  • 收稿日期:1995-03-27 出版日期:1995-01-25 发布日期:2013-03-19

Changes of Endothelin Contents in Plasma and Tissues Induced by Acute Hypoxia in Rats

  1. Neval General Hospital,Beijing 100037
  • Received:1995-03-27 Online:1995-01-25 Published:2013-03-19

摘要: 利用低压舱对大鼠进行急性低气压重度缺氧实验。动物模拟升空至7500m高度,停留30min。出舱后立即收集各种样本,用放射免疫法测定内皮素含量。发现实验组血浆内皮素较对照组明显升高(P<0.001),而其肺、右房心肌和丘脑组织中内皮素较对照组显著降低(P<0.001)。这提示重度缺氧使大鼠体内的内皮素合成、释放和代谢过程发生紊乱。这种心血管内分泌功能失调可能在缺氧性机体损害过程中有重要作用。

关键词: 缺氧, 低气压, 内皮素, 大鼠

Abstract: The concentrations of endothelin were measured by radioimmunoassay in 15 rats after being placed in low atmospheric pressure (36.971 kPa) hypoxia for 30 min to mimic the flying altitude of 7500 m. Compared with the control, the concentration of plasma endothelin of the experimental group increased markedly (P<0.001)> and the concentrations of endothelin in lung, right atrial myocardium and thalamus decreased significantly (P<0.001). The results suggest that the synthesis, release and metabolism of the endothelin in the experimental subjects developed serious disturbance by acute hypoxia, which may be significant in the damages of the body in hypoxia.

Key words: "Hypoxia, Endothelin concentration, Rat "