patients with alzheimer's disease have cognitive deficits, impaired long-term potentiation and learning and memory. a progressive reduction in cholinergic neurons in some areas of the brain such as cortex and hippocampus is related to the deficits in memory and cognitive function in alzheimer’s disease (ad). in the current project a new series of phthalimide derivatives were synthesized. p...

Objective: Brain acetylcholinesterase activity was determined in healthy controls and in patients with mild cognitive impairment and early Alzheimer’s disease. Methods: A specific acetylcholinesterase tracer, [methylC]N-methyl-piperidyl-4-acetate ([C]MP4A), and a three dimensional PET system with magnetic resonance coregistration were used for imaging. Results: There was a significant differenc...

Acetylcholinesterase is an enzyme responsible for termination of excitatory transmission at cholinergic synapses by the hydrolyzing of a neurotransmitter acetylcholine. Nowadays, other functions of acetylcholinesterase in the organism are considered, for example its role in regulation of apoptosis. Cholinergic nervous system as well as acetylcholinesterase activity is closely related to pathoge...

We previously reported that acetylcholinesterase plays a critical role in apoptosis and its expression is regulated by Ca(2+) mobilization. In the present study, we show that activated calpain, a cytosolic calcium-activated cysteine protease, and calcineurin, a calcium-dependent protein phosphatase, regulate acetylcholinesterase expression during A23187-induced apoptosis. The calpain inhibitor,...

Methods. Serial tangential sections and whole-mount preparations of the scleral spur region of 18 human eyes of different ages were investigated with electronmicroscopic and immunohistochemical methods. For immunohistochemistry antibodies against neurofilament-proteins, synaptophysin, substance P (SP), calcitonin gene-related peptide (CGRP), vasoactive intestinal polypeptide (VIP), neuropeptide...

background: galantamine is a drug used for the treatment of alzheimer’s disease and some other cognitive disorders. it is an inhibitor of acetylcholinesterase however, interaction with nicotinic acetylcholine receptors has also been reported. owing to the significant role of cholinergic anti-inflammatory pathways in neuro-immunomodulation, we decided to examine the effect of galantamine on tula...

The distribution of acetylcholinesterase in the canine kidney was studied by the histochemical method of Karnovsky and Roots and compared to the distribution of adrenergic fibers studied with the fluorescence histochemical method of Falck and Hillarp. Specific inhibitors of nonspecific cholinesterase and acetylcholinesterase were used to differentiate between the two enzymes. In the hilus, acet...