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Related Experiment Videos

Rapid 31P NMR test of liver function.

W J Thoma1, K Uğurbil

  • 1Department of Biochemistry, University of Minnesota, Navarre 55392.

Magnetic Resonance in Medicine
|October 1, 1988
PubMed
Summary

31P NMR spectroscopy reveals changes in liver metabolites when pyruvate is supplied. These metabolic shifts indicate potential for evaluating liver function using this technique.

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Area of Science:

  • Biochemistry
  • Physiology
  • Medical Imaging

Background:

  • Phosphorus-31 Nuclear Magnetic Resonance (31P NMR) spectroscopy is a non-invasive technique.
  • Liver function assessment is crucial for diagnosing and monitoring various medical conditions.
  • Metabolic profiling of the liver can provide insights into its functional state.

Purpose of the Study:

  • To investigate the impact of exogenous carbon substrates on the 31P NMR spectrum of perfused rat liver.
  • To determine if observed spectral changes correlate with liver function.

Main Methods:

  • Perfused rat liver model was utilized.
  • 31P NMR spectroscopy was performed on liver tissue.
  • Exogenous pyruvate was supplied to livers perfused with lactate.

Main Results:

  • Addition of pyruvate to lactate-perfused liver caused a decrease in inorganic phosphate (Pi).
  • Levels of phosphoenol pyruvate and phosphomonoesters increased following pyruvate administration.
  • Nucleotide pools within the liver remained largely unchanged.

Conclusions:

  • The observed metabolic changes in the 31P NMR spectrum are dependent on available exogenous carbon.
  • These spectral alterations suggest that 31P NMR can be a valuable tool for evaluating liver function.

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