Medial temporal lobe glutathione concentration in first episode psychosis: a 1H-MRS investigation.
Glutathione (GSH) is implicated in the pathophysiology of schizophrenia. Previous brain spectroscopy studies, however, have been inconsistent, and there is little data available from first episode psychosis patients. This study compared brain GSH in a first episode cohort (n=30) to controls (n=18), using magnetic resonance spectroscopy (MRS), examining a temporal lobe voxel. Short-echo (TE 30 ms) acquisition proton MRS was performed on a 3T clinical magnetic resonance scanner. Comparison of the first-episode and control groups' GSH concentrations revealed a significant main effect of group (F(1,46)=4.7, p=0.035), but no main effect of hemisphere (F(1,46)=2.3, p=0.137) or group-by-side interactions (F(1,46)=0.4, p=0.513). Medial temporal lobe GSH concentrations in the first episode group were 22% higher than those in the control group. This study provides further evidence of significant perturbations in brain GSH in first episode psychosis, and supports a broader involvement of GSH in the pathophysiology of schizophrenia.
Wood
Stephen J
SJ
Melbourne Neuropsychiatry Centre, Department of Psychiatry, University of Melbourne and Melbourne Health, Australia. sjwood@unimelb.edu.au
Berger
Gregor E
GE
Wellard
R Mark
RM
Proffitt
Tina-Marie
TM
McConchie
Mirabel
M
Berk
Michael
M
McGorry
Patrick D
PD
Pantelis
Christos
C
D000293:Adolescent; D000704:Analysis of Variance; D005260:Female; D005978:Glutathione / Q000032:analysis*; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D009525:Niacin; D011618:Psychotic Disorders / Q000378:metabolism*; D012882:Skin Tests; D013702:Temporal Lobe / Q000737:chemistry*; D055815:Young Adult
D009525:Niacin; D005978:Glutathione