Chinese Journal of Magnetic Resonance ›› 2007, Vol. 24 ›› Issue (4): 510-518.

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HR-MAS 1H NMR Spectra of Rat Kidney Tissue Analyzed by Statistical Total Correlation Spectroscopy (STOCSY)

LI Zhao1,2, ZHU Hang1,2,CHENG Peng1,2,ZHOU Zhi-ming1,2,LIU Mai-li1,ZHANG Xu1*   

  1. 1.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:2007-06-05 Revised:2007-06-29 Online:2007-12-05 Published:2007-12-05
  • About author:*Corresponding author:Zhang Xu,Tel:027-87197056,E-mail:zhangxu@wipm.ac.cn.
  • Supported by:

    国家自然科学基金资助项目(20475061, 20610104, 20635040).

Abstract:

Providing spectral resolution comparable to those of high resolution spectroscopy on tissue extracts, high resolution magic angle spinning (HR-MAS) NMR spectroscopy on intact tissue has been used widely in NMR-based metabonomic studies. In order to prevent enzymatic degradation and/or diffusion of metabolites, the HR-MAS NMR experiments are often performed at low temperature with a short acquisition time. Statistical total correlation spectroscopy (STOCSY) is a novel tool developed previously for NMR-based metabonomic studies. It takes advantage of the multicollinearity of the intensity variables in a set of 1H NMR spectra to generate a pseudo-two-dimensional NMR spectrum, without needing extra acquisition time. In this paper, STOCSY was used to analyze HR-MAS 1H spectra of rat kidney tissue. Pseudo 2D spectra were generated from a set of 1D HR-MAS NMR spectra and used to observe intramolecular correlations among the resonances. The STOCSY results are helpful in peak assignment.

Key words: NMR, statistical total correlation spectroscopy (STOCSY), magic angle spinning, tissue, kidneys

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