a Effects of different concentrations of SAA (1, 3, and 10 μmol/L) on cell viability after OGD injury (n = 4). b–d Effects of SAA on ZO-1, Occludin, and Claudin-5 protein expression after OGD. e–l Representative Western blot showing HIF-1α, VEGF, total Src, Src-Tyr416, VAV2-Tyr172, Rac1, total PAK, and p-PAK protein expression. n = 6, mean ± SEM. #P < 0.05, ###P < 0.001 vs the sham group, *P < 0.05 and **P < 0.01 vs the model group.