波谱学杂志 ›› 1997, Vol. 14 ›› Issue (2): 147-152.

• 研究论文 • 上一篇    下一篇

3lP NMR研究小鼠脑在缺氧状态下能量代谢的动态变化

颜贤忠1, 晏礼明2, 徐家鸽2, 杜泽涵1, 吴本鸽2   

  1. 1. 军事医学科学院国家生物医学分析中心, 北京 100850;
    2. 北京医科大学生物物理系, 北京 100083
  • 收稿日期:1996-09-19 修回日期:1996-11-18 出版日期:1997-04-05 发布日期:2018-01-22

DYNAMIC CHANGES IN ENERGETIC METABOLISM OF MOUSE BRAIN IN HYPOXIA STUDIED BY 31P IN VIVO NMR METHOD

Yan Xianzhong1, Yan Liming2, Xu Jialing2, Du Zehan1, Wu Benjie2   

  1. 1. National Centre for Biomedical Analysis, 27 Taiping Road, Beijing 10085;
    2. Department of Biophysics, Beijing Medical University, Beijing 100083
  • Received:1996-09-19 Revised:1996-11-18 Online:1997-04-05 Published:2018-01-22

摘要: 31P体内核磁共振方法无损伤地观察了C57小鼠脑在缺氧时与能量代谢有关的含磷化合物Pi,PCr,ATP的动态变化,当气体中氧气含量降到5%时,小鼠大脑的PCr,ATP逐渐减少,Pi不断增加,脑组织内pH值降低至6.83~6.93.当Pi与PCr的峰高比等于1时给予复氧,发现复氧时Pi立即降低且pH立即升高的小鼠可以恢复,反之则不可恢复,表明Pi和pH反映了大脑缺氧损伤程度.

关键词: 核磁共振, 31P体内核磁共振, 能量代谢, 缺氧

Abstract: Changes of phosphates related to energetic metabolism such as PCr, Pi, ATP in C57 mouse brain in hypoxia were observed noninvasively by 31P in vivo NMR method. When the content of oxygen was reduced to 5%, the concentrations of PCr, ATP decreased while Pi increased, pH of brain cell decreased to 6.83~6.93. Mice were reoxygenated when the ratio of peak heights of Pi to PCr were about 1.Those that the ratio of pi after and before reoxygenation were larger than 1 and pH in reoxygenation increased immediately, could be recovered, otherwise couldn't be recovered. The results showed that Pi and pH reflect the degree of brain damage in hypoxia.

Key words: NMR, 31P in vivo NMR, Energetic metabolism, Hypoxia