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Related Experiment Videos

Editing through multiple bonds: threonine detection.

Malgorzata Marjanska1, Pierre-Gilles Henry, Kâmil Uğurbil

  • 1Center for Magnetic Resonance Research and Department of Radiology, University of Minnesota, Minneapolis, MN 55455, USA. gosia@cmrr.umn.edu

Magnetic Resonance in Medicine
|January 30, 2008
PubMed
Summary
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Researchers developed a new method to measure threonine in vivo using (1)H spectroscopy. This technique successfully quantified threonine in both rat and human brains, overcoming previous spectral overlap challenges.

Area of Science:

  • Neuroscience
  • Biochemistry
  • Medical Imaging

Background:

  • In vivo (1)H spectroscopy often misassigns the 1.32 ppm signal to lactate.
  • This signal is also produced by threonine at physiological pH.
  • Distinguishing between lactate and threonine signals is technically difficult, hindering accurate quantification.

Purpose of the Study:

  • To develop and validate a novel technique for detecting and quantifying threonine in vivo.
  • To differentiate threonine signals from overlapping lactate signals in (1)H spectroscopy.
  • To measure threonine concentrations in both rat and human brains.

Main Methods:

  • Utilized a single-shot multiple-bond editing technique in (1)H spectroscopy.
  • Applied the technique for in vivo detection of threonine.

Related Experiment Videos

  • Quantified threonine concentrations in rat and human brain samples.

    • Main Results:

    • Successfully detected and quantified the threonine signal in vivo.
    • Estimated threonine concentration in the rat brain at 0.8 +/- 0.3 mM.
    • Measured an approximate threonine concentration of 0.33 mM in the human brain.

    Conclusions:

    • The developed editing technique effectively distinguishes threonine from lactate in vivo.
    • This method allows for accurate in vivo quantification of brain threonine.
    • Provides baseline threonine concentration values for rat and human brains.