Protein expression levels of Kir2.1 (A), Kir3.1 (B), and Kir6.2 (C) channels in ipsilateral and contralateral hippocampi from both sham control and Aβ(1–42)-infused rat model. Upper panel: representative images of WB analysis on total protein extracts. β-actin was used as endogenous control for equal protein load. Lower panel: densitometric analysis of Kir2.1 (A), Kir3.1 (B), and Kir6.2 (C) protein levels. Data are expressed as fold change ratio on sham control and normalized to the β-actin protein levels. Bars represent the mean ± SEM obtained in 3 independent experiments, n = 7 for each group, * p < 0.05, ** p < 0.01.