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Oxid Med Cell Longev ; 2019: 8636835, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30911351


Ginkgo ketoester tablets (GT) and donepezil were a clinically used combination for the treatment of Alzheimer's disease (AD). The aim of the study was undertaken to investigate the antiamnesic effects of the two drugs alone and in combination through in vivo models of the Morris water maze along with in vitro antioxidants, acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE). The potential mechanisms were speculated by the activities of acetylcholine (ACh), AChE, superoxide dismutase (SOD), and malondialdehyde (MDA) and the protein expression of brain-derived neurotrophic factor (BDNF) and tyrosine protein kinase B (TrkB). The combination group showed a concentration-dependent inhibition of cholinesterase and antioxidation. As far as its mechanism was concerned, the combination of two drugs exerted excellent effects on oxidative stress, cholinergic pathway damage, and inactivation of the BDNF-TrkB signaling pathway. Additionally, to elucidate the binding mechanism of GT active ingredients into the structure of AChE, the results of molecular docking studies indicated that hydrogen and/or hydrophobic bonds might play an important role in their binding process. Thus, the combination of drugs could treat AD perfectly and further verify the scientific rationality of clinical medication.

Amnésia/tratamento farmacológico , Donepezila/uso terapêutico , Ginkgo biloba/química , Transtornos da Memória/induzido quimicamente , Transtornos da Memória/tratamento farmacológico , Extratos Vegetais/uso terapêutico , Acetilcolina/metabolismo , Acetilcolinesterase , Amnésia/patologia , Animais , Benzotiazóis/química , Compostos de Bifenilo/química , Fator Neurotrófico Derivado do Encéfalo/metabolismo , Inibidores da Colinesterase/farmacologia , Transtornos Cognitivos/tratamento farmacológico , Donepezila/farmacologia , Quimioterapia Combinada , Ginkgolídeos/química , Ligantes , Malondialdeído/metabolismo , Camundongos Endogâmicos ICR , Simulação de Acoplamento Molecular , Picratos/química , Extratos Vegetais/farmacologia , Receptor trkB/metabolismo , Escopolamina , Ácidos Sulfônicos/química , Superóxido Dismutase/metabolismo , Comprimidos