Altered in vivo brain GABA and glutamate levels are associated with multiple sclerosis central fatigue.
MS fatigue
Magnetic resonance imaging
Magnetic resonance spectroscopy
Mescher-Garwood point resolved spectroscopy
Neurometabolites
Journal
European journal of radiology
ISSN: 1872-7727
Titre abrégé: Eur J Radiol
Pays: Ireland
ID NLM: 8106411
Informations de publication
Date de publication:
Apr 2021
Apr 2021
Historique:
received:
09
09
2020
revised:
31
01
2021
accepted:
21
02
2021
pubmed:
4
3
2021
medline:
15
4
2021
entrez:
3
3
2021
Statut:
ppublish
Résumé
Fatigue is a common symptom in patients with multiple sclerosis (MS) with unknown pathophysiology. Dysfunction of the GABAergic/glutamatergic pathways involving inhibitory and excitatory neurotransmitters such as γ-aminobutyric acid (GABA) and glutamine + glutamate pool (Glx) have been implicated in several neurological disorders. This study is aimed to evaluate the potential role of GABA and Glx in the origin of central fatigue in relapse remitting MS (RRMS) patients. 24 RRMS patients and 16 age- and sex-matched healthy controls (HC) were scanned using Mescher-Garwood point resolved spectroscopy (MEGA-PRESS) with a 3 T system to quantify GABA+ and Glx from prefrontal (PFC) and sensorimotor (SMC) cortices. Self-reported fatigue status was measured on all participants using the Modified Fatigue Impact Scale (MFIS). RRMS patients had higher fatigue scores relative to HC (p ≤ 0.05). Compared to HC, Glx levels in RRMS patients were significantly decreased in SMC (p = 0.04). Significant correlations were found between fatigue scores and GABA+ (r = -0.531, p = 0.008) and Glx (r = 0.511, p = 0.018) in PFC. Physical fatigue was negatively correlated with GABA+ in SMC and PFC (r = -0.428 and -0.472 respectively, p ≤ 0.04) and positively with PFC Glx (r = 0.480, p = 0.028). The associations between fatigue and GABA + and Glx suggest that there might be dysregulation of GABAergic/glutamatergic neurotransmission in the pathophysiological mechanism of central fatigue in MS.
Identifiants
pubmed: 33657474
pii: S0720-048X(21)00090-5
doi: 10.1016/j.ejrad.2021.109610
pmc: PMC8900256
mid: NIHMS1781328
pii:
doi:
Substances chimiques
Glutamine
0RH81L854J
Glutamic Acid
3KX376GY7L
gamma-Aminobutyric Acid
56-12-2
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
109610Subventions
Organisme : NIA NIH HHS
ID : K99 AG062230
Pays : United States
Informations de copyright
Crown Copyright © 2021. Published by Elsevier B.V. All rights reserved.
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