In vivo 1H NMR measurement of glycine in rat brain at 9.4 T at short echo time.

Détails

ID Serval
serval:BIB_34F0E72E118E
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
In vivo 1H NMR measurement of glycine in rat brain at 9.4 T at short echo time.
Périodique
Magnetic Resonance in Medicine
Auteur⸱e⸱s
Gambarota G., Xin L., Perazzolo C., Kohler I., Mlynárik V., Gruetter R.
ISSN
1522-2594 (Electronic)
ISSN-L
0740-3194
Statut éditorial
Publié
Date de publication
2008
Volume
60
Numéro
3
Pages
727-731
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov'tPublication Status: ppublish
Résumé
Glycine is an amino acid present in mammalian brain, where it acts as an inhibitory and excitatory neurotransmitter. The two detectable protons of glycine give rise to a singlet at 3.55 ppm that overlaps with the more intense myo-inositol resonances, and its measurement has traditionally required specific editing efforts. The aim of the current study was to reduce the signal intensity of myo-inositol relative to that of glycine by exploiting the fast signal J-evolution of the myo-inositol spin system when using a single spin-echo localization method we recently introduced. Glycine was detected at TE = 20 ms with an average Cramér-Rao lower bound (CRLB) of 8.6% +/- 1.5% in rat brain (N = 5), at 9.4 T. The concentration of glycine was determined using LCModel analysis at 1.1 +/- 0.1 mM, in good agreement with biochemical measurements previously reported. We conclude that at high magnetic fields, glycine can be measured at a relatively short echo time (TE) without additional editing efforts.
Mots-clé
Animals, Brain/metabolism, Glycine/metabolism, Magnetic Resonance Spectroscopy/methods, Male, Rats, Rats, Sprague-Dawley
Pubmed
Web of science
Création de la notice
04/08/2010 15:28
Dernière modification de la notice
20/08/2019 13:22
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