GAS reversed the suppression of autophagy flux and hyperphosphorylation of CaMKII in VD rats. (A, B) The protein extract of hippocampal tissue was analyzed by western blotting for LC3, p62, p-p62 (Thr349), LAMP-2, CaMKII, and p-CaMKIIα (Thr286). Protein levels were quantified and normalized to β-actin. Data are presented as the mean ± standard error of the mean (SEM). ##P< 0.01 versus sham, *P<0.05, **P< 0.01 versus model. (C) Representative images of hippocampal tissue sections immunostained with LC3 antibodies (×50, ×200). Scale bars: 200 μm or 50 μm. LC3, microtubule-associated protein 1 light chain 3; LAMP-2, lysosomal-associated membrane protein-2; CaMKII, Ca2+-calmodulin stimulated protein kinase II; p-CaMKIIα, phosphorylated CaMKIIα.