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Alzheimer’s disease (AD) is a neurodegenerative disorder characterized by a clinically and progressive loss of cognitive function, neuropsychiatric and behavioral disorders. Some studies showed that chrysin has antioxidant and anti-inflammatory properties. However, your bioavailability is relatively low. Therefore, the present study was designed to investigate the effects of chrysin loaded lipid-core nanocapsules (LNCs) on neurochemical and behavioral changes in a model of AD induced by β-amyloid_1–42 (Aβ₁₋₄₂) peptide in aged female mice. For this purpose, aged female mice received free chrysin (FC) (5 mg/kg, per oral, p.o.) or chrysin loaded LNCs (C1-LNC and C5-LNC) (1 or 5 mg/kg, p.o.) for 14 days after Aβ_1–42 administration (400 pmol, i.c.v.). Aβ_1–42 induced significant impairments on memory and learning (morris water maze task, object recognition and step-down-type passive avoidance), also …