Fig. (3).

Protein expression levels of the main AMPA receptor subunits in the hippocampus of rats 24 h and 7 days after the last NaCl and LiCl injection. GluA1 (panel a, b), GluA2 (panel c, d), and GluA3 (panel e, f) levels were investigated in the postsynaptic density and the extra-synaptic fraction. The GluA1/GluA2 (panel g) and GluA2/GluA3 ratios (panel h) were measured in the postsynaptic density. In panel (i), representative immunoblots for GluA1, GluA2, GluA3, and β-Actin are shown for each fraction evaluated. Results are expressed as mean percentage ± mean standard error. Unpaired Student’s t-test or Mann-Whitney test *p < 0.05, **p < 0.01, ***p < 0.001 vs. NaCl 24 h; ^#p < 0.05, ^##p < 0.01, ^###p < 0.001 vs. NaCl 7 d.