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Donepezil, a potent acetylcholinesterase (AChE) inhibitor used for the treatment of Alzheimer's disease (AD), is thought to have a neuroprotective effect in AD patients. Because a deficit in cholinergic neurotransmission is a major feature in AD, and amyloid-beta (Abeta) accumulation has been proposed as a possible causative phenomenon, we were interested… (More)
Donepezil hydrochloride (donepezil: (+/-)-2-[(1-benzylpiperidin-4-yl)methyl]-5,6-dimethoxy-indan-1-one monohydrochloride) is a potent acetylcholinesterase inhibitor used for treatment of Alzheimer's disease. Although acetylcholinesterase inhibitors are used as a symptomatic treatment for Alzheimer's disease, it is not clear whether or not they are effective… (More)
Donepezil has a neuroprotective effect against oxygen-glucose deprivation injury and glutamate toxicity in cultured cortical neurons. In this study, we further characterized the neuroprotective properties of donepezil in rat cortical cell cultures using glutamate receptor-specific agonists (N-methyl-d-aspartate (NMDA),… (More)
Donepezil, a potent acetylcholinesterase (AChE) inhibitor and memantine, an N-methyl-d-aspartate (NMDA) receptor antagonist, have been used for the treatment of Alzheimer's disease (AD), and both of them have been shown to have neuroprotective action against glutamate excitotoxicity. However, it is not known whether donepezil and memantine similarly exert… (More)
Phenylalanine tRNA identity has been determined in the bacteria and the eukaryote system, but remains unknown for the archaea system. To investigate the molecular recognition mechanism of phenylalanine tRNA by phenylalanyl-tRNA synthetase from hyperthermophilic and aerobic archaeon, Aeropyrum pernix K1, various mutant transcripts of phenylalanine tRNA… (More)
(-)-Methyl 7 beta-hydroxykaurenoate (3) and its 4-demethyl acetate (-)-4 were both synthesized via methods that contained radical cyclization and intramolecular Diels-Alder reactions as key steps. Both compounds displayed potent neuroprotective activity against N-methyl-D-aspartate toxicity in cultured cortical neurons.
A series of novel neuronal voltage-dependent calcium channel (VDCC) blockers, with inhibitory activity at low micromolar and moderate solubility in water, was discovered by constructing and screening a focused library based on emopamil (1) left hand (ELH) as a bioactive template.