Table 1.

Glutathione concentrations in the brains of young mice (Y), old-control mice (OC) and old mice supplemented with GlyNAC (OG). t-GSH, r-GSH and GSSG are the total, reduced and oxidized glutathione concentrations. Results are reported as mean ± SE (standard error) and considered to be statistically significant at values p < 0.05.

	Y YC vs. OG	OC YC vs. OC	OG OC vs. OG
t-GSH (μmol/g)	6.4 ± 0.8 p = 0.6	2.9 ± 0.5 p < 0.01	6.0 ± 0.8 p < 0.01
r-GSH (μmol/g)	4.3 ± 0.2 p = 0.6	1.9 ± 0.1 p < 0.001	4.1 ± 0.4 p < 0.001
GSSG (μmol/g)	2.1 ± 0.7 p = 0.77	1.0 ± 0.3 p = 0.42	1.9 ± 0.6 p = 0.47