## Abstract Dynamic nuclear polarization can be used to increase the sensitivity of solution state ^13^C magnetic resonance spectroscopy by four orders of magnitude. We show here that [1‐^13^C]glutamate can be polarized to 28%, representing a 35,000‐fold increase in its sensitivity to detection at
In Vivo proton spectroscopy and spectroscopic imaging of {1-13C}-g1ucose and its metabolic products
✍ Scribed by Peter C. M. Van Zijl; A. Scott Chesnick; D. Despres; Chrit T. W. Moonen; J. Rhiz-Cabello; P. Van Gelderen
- Book ID
- 102955822
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 755 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0740-3194
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✦ Synopsis
Abstract
Metaibolism of {1−^13^C}‐glucose was studied in situ in cat brain usinig gradient‐enhanced proton‐detected heteronuclear spectroscopy. Proton detection of {1−^13^C}‐glucose, {3−^13^C}−lactaite, 4−{^13^C}‐glutamine, 4−{^13^C}‐glutamate and the combined signals 2−{^13^C}‐glutamate/glutamine and 3−(^13^C}‐glutamate/glutamine was achieved, despite the fact that some of the associated proton resonances are close to the water signal. Two‐dimensional {^1^H‐^13^C}‐spectra demonstrate the possibility of in situ spectral assignment with ^1^H sensitivity and ^13^C resolution. Spectroscopic images of glucose and its metabolic products were also acquired, showing the possibility to study spatial dependence of metabolism.
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Alanine is the major amino acid utilized by the liver for gluconeogenesis under normal conditions. The metabolism of alanine in rat liver was investigated by means of 1 H and 13 C NMR spectroscopic studies in vivo and in vitro after infusion of L-and D-alanine labelled with 13 C at the carboxyl and