Potassium channels in the neuronal homeostasis and neurodegenerative pathways underlying Alzheimer’s disease: An update

•Potassium (K+) channels are key regulators of cell excitability in several tissues.•A dysregulation of K+ channels is associated with Alzheimer’s disease (AD).•The role of K+ channels in AD is not completely elucidated.•Understanding their functions will be helpful for clarifying AD pathogenesis.•Modulating K+ channel expression should be useful for developing novel drugs.