波谱学杂志 ›› 2008, Vol. 25 ›› Issue (4): 478-485.

• 研究论文 • 上一篇    下一篇

HR-MAS NMR研究大鼠颞叶、海马和内嗅皮质的生理代谢表征

刘慧浪1,2; 朱航1,2; 夏圣安1,2; 刘买利1*   

  1. [1.波谱与原子分子物理国家重点实验室(中国科学院 武汉物理与数学研究所), 湖北 武汉 430071; 2.中国科学院 研究生院, 北京 100049]
  • 收稿日期:2008-05-27 修回日期:2008-06-02 出版日期:2008-12-05 发布日期:2009-12-05
  • 通讯作者: 刘买利

Metabolic Profiles in Temporal Cortex, Hippocampus and Entorhinal Cortex in Rats Measured by HR-MAS 1H NMR Spectroscopy

LIU Hui-lang1,2;ZHU Hang1,2;XIA Sheng-an1,2;LIU Mai-li1*   

  1. [1.Wuhan Center for Magnetic Resonance, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics (Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences), Wuhan 430071, China; 2.Graduate School of Chinese Academy of Sciences, Beijing 100049, China]
  • Received:2008-05-27 Revised:2008-06-02 Online:2008-12-05 Published:2009-12-05
  • Contact: LIU Mai-li

摘要: 颞叶结构参与了多种中枢退行性疾病的发生和发展. 了解生理状态下大鼠的这些脑区的代谢特征可以为动物模型的病理研究提供基础数据和参考. 本文采用高分辨魔角旋转核磁共振(HR-MAS NMR)波谱技术和主成分分析(PCA)方法对S.D.大鼠双侧颞叶、海马和内嗅皮质的代谢物进行了分析,结果发现这3个脑区的代谢表征存在显著差异. 颞叶区的N-乙酰天门冬氨酸和牛磺酸的浓度最高,肌醇和肌酸的浓度最低;海马区的甘氨酸和胆碱的浓度最高;而在内嗅皮质区则是谷氨酰氨的浓度最高. 另外,还证实了HR-MAS NMR-PCA技术是研究生理和病理状态下脑组织各亚结构代谢表征的一种有效的手段.

关键词: HR-MAS NMR, 生理代谢表征, 主成分分析, S.D. 大鼠, 颞叶结构

Abstract: Temporal lobe structures are involved in various neurodegenerative diseases. In this study, metabolic profiles in the temporal lobes (TL), hippocampus (HPC) and entorhinal cortex (EC) of SD rats were measured by highresolution magic-angle-spinning (HR-MAS) 1H NMR spectroscopy. Principal components analysis (PCA) was used to classify the HR-MAS 1H NMR spectra obtained from different brain regions. It was found that TL has relatively low concentrations of myo-inositol and total creatine and relatively high concentrations of N-acetylaspartate and taurine, while HPC has relatively high levels of glycine and choline compounds, and EC has a high level of glutamine. HR-MAS 1H NMR spectroscopy may provide a valuable tool for monitoring metabolic changes in the temporal lobe structures related to neurodegenerative diseases and pharmacological challenges.

Key words: HR-MAS NMR, metabolic profiles, principal component analysis, S.D. rat, temporal lobe

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