Fig. 5. MRS metabolite concentrations (mM) in sham (Sham) and opioid-dependent rats receiving saline (SAL/NAL OD, n = 9) or NAC (NAC/NAL OD, n = 8) at pre- and post-withdrawal (30 and 120 min).
a [GSH] Glutathione; b [GLX] Glutamate–Glutamine; c [NAA] N-acetylaspartate; d [Cr] Creatine. Comparison between pre-scan (blue bars) and 120-min scan (green bars) were done using Wilcoxon signed-rank test (*p < 0.05). There are no significant differences in the pre-withdrawal mean concentrations of any metabolite between groups.
