COVID-19(12) Alzheimer's disease(10) Cognitive impairment(9) cognitive(8) disease(8) COVID(7) Dementia(7) COVID-19 patient(7) with COVID-19(5) COVID-19 patients(5) Signaling(5) feature(5) oxidative(5) SARS-COV-2 infection(5) demonstrated(5) pathway(5) calcium(5) post-translational modifications(5) therapeutic target(5) Modification(5) RyR2(5) pathology(5) include(5) phenotype(5) ryanodine receptor(5) Evidence(5) Activation(5) Ryanodine(5) shown(5) oxidative stress(5)