Galanthamine and physostigmine are clinically used cholinomimetics that both inhibit acetylcholinesterase and also interact directly with and potentiate nAChRs. As with most nAChR-positive allosteric modulators, the location and number of their binding site(s) within nAChRs are unknown. In this study, we use the intrinsic photoreactivities of [(3)H]physostigmine and [(3)H]galanthamine upon irra...

Introduction: Atropa belladonna (deadly nightshade) is a poisonous herb that can be especially seen in Northern regions of our country and cause anticholinergic toxic syndrome (ATS) when consumed. ATS consuming the plant which contains atropine or overdose psychoactive drugs containing (such as antipsychotics, tricyclic antidepressants). 
 Case 1: A 65-year-old female patient was admitted ...

Intra-septal infusions of the gamma-aminobutyric acid (GABA) agonist muscimol impair learning and memory in a variety of tasks. This experiment determined whether hippocampal or entorhinal infusions of the acetylcholinesterase inhibitor physostigmine would reverse such impairing effects on spontaneous alternation performance, a measure of spatial working memory. Male Sprague-Dawley rats were gi...

cholinergic effects of the fluorophosphates and those of physostigmine was noted by the British workers, McCombie et al.,’ and by Adrian and his group.2 The theory of chemical mediation of the transmission of nerve impulses through the autonomic nervous system identifies ac&ylcholine as the mediator. The presence of the enzyme, cholinesterase, at sites where acetylcholine is liberated by the ne...

cholinergic effects of the fluorophosphates and those of physostigmine was noted by the British workers, McCombie et al.,’ and by Adrian and his group.2 The theory of chemical mediation of the transmission of nerve impulses through the autonomic nervous system identifies ac&ylcholine as the mediator. The presence of the enzyme, cholinesterase, at sites where acetylcholine is liberated by the ne...

The present study was designed to evaluate the effect of palmatine on memory of Swiss young male albino mice. Palmatine (0.1, 0.5, 1 mg/kg, i.p.) and physostigmine (0.1 mg/kg, i.p.) per se were administered for 10 successive days to separate groups of mice. Effect of drugs on learning and memory of mice was evaluated using elevated plus maze and Morris water maze. Brain acetylcholinesterase act...