Intranasal co-delivery of riluzole and berberine via chitosan-coated PLGA nanoparticles for synergistic neuroprotection in Alzheimer's disease: formulation, characterization, and pharmacokinetics analysis. - Komy MHE; Aldosari BN; Zaki RM; Bafail R; Yusif RM; Abdelgawad MA; Elmowafy M; Abuhelwa AY; Eid HM (Naunyn-Schmiedeberg's archives of pharmacology, 2026)