Huperzine A, an active Lycopodium alkaloid extracted from traditional Chinese herb, is a potent, selective and reversible acetylcholinesterase (AChE) inhibitor and has been widely used in China for the treatment of Alzheimer's disease (AD). IC50 value:Target: AChEHuperzine A exhibited protective effects against d-gal-induced hepatotoxicity and inflamm-aging by inhibiting AChE activity and via the activation of the cholinergic anti-inflammatory pathway. The huperzine A mechanism might be involved in the inhibition of DAMPs-mediated NF-κB nuclear localization and activation. Huperzine A is a potential therapeutic agent for Alzheimer's disease.
Timosaponin AIII could inhibit acetylcholinesterase (AChE) activity, with an IC50 of 35.4 μM.
Cyclanoline (chloride) shows cholinesterase inhibitory activity[1].
Isomerazin is a coumarin isolated from Poncirus trifoliate Raf., and shows cholinesterase inhibition[1][2].
Ajmalicine (Raubasine) is found in herbs of Catharanthus roseus, is an antihypertensive drug used in the treatment of high blood pressure, decreases peripheral resistance and blood pressure[1].Ajmalicine (Raubasine) is an adrenolytic drug which preferentially blocks alpha 1-adrenoceptor than alpha 2-adrenoceptor[2].Ajmalicine (Raubasine) is an reversible non-competitive nicotine receptor antagonist with an IC50 of 72.3 μM[3].Ajmalicine (Raubasine) acts preferentially at postsynaptic sites, competitively antagonizes the effect of noradrenaline on postsynaptic alpha-adrenoceptor with a pA2 value of 6.57, blocks the inhibitory effect of clonidine with an pA2 value of 6.2[4].
Echimidine N-oxide, a pyrrolizidine alkaloid, has acetylcholinesterase (AChE) inhibitory activity (IC50=0.347 mM)[1].
Pyridostigmine is a parasympathomimetic and a reversible cholinesterase inhibitor.Target: AChEPyridostigmine is a parasympathomimetic and a reversible cholinesterase inhibitor. Since it is a quaternary amine, it is poorly absorbed in the gut and does not cross the blood–brain barrier, except possibly in stressful conditions. Pyridostigmine inhibits acetylcholinesterase in the synaptic cleft, thus slowing down the hydrolysis of acetylcholine. It is a quaternary carbamate inhibitor of cholinesterase that does not cross the blood–brain barrier which carbamylates about 30% of peripheral cholinesterase enzyme. The carbamylated enzyme eventually regenerates by natural hydrolysis and excess ACh levels revert to normal.Pyridostigmine is used to treat muscle weakness in people with myasthenia gravis and to combat the effects of curariform drug toxicity. Pyridostigmine bromide has been FDA approved for military use during combat situations as an agent to be given prior to exposure to the nerve agent Soman in order to increase survival. Used in particular during the first Gulf War, pyridostigmine bromide has been implicated as a causal factor in Gulf War syndrome. Pyridostigmine sometimes is used to treat orthostatic hypotension. It may also be of benefit in chronic axonal polyneuropathy.
Protriptyline (N-Methyl-d3) hydrochloride is the deuterium labeled Protriptyline hydrochloride. Protriptyline hydrochloride is a tricyclic antidepressant (TCA), specifically a secondary amine, for the treatment of depression and ADHD. Unique among the TCAs, protriptyline tends to be energizing instead of sedating, used for narcolepsy to achieve a wakefulness-promoting effect[1].
AChE/BuChE/MAO-B-IN-1 (compound 19) is an inhibitor of human acetyl- (hAChE), butyrylcholinesterase (hBuChE) and monoamine oxidase-B (hMAO-B) with IC50s of 4.8 μM, 13.7 μM, and 1.11 μM, respectively. AChE/BuChE/MAO-B-IN-1 also exhibits high affinity to both the σ1 and σ2 receptors with Ki values of 42.8 nM (human σ1 receptor) and 191 nM (rat σ2 receptor), respectively. AChE/BuChE/MAO-B-IN-1 can be used for Alzheimer’s disease research[1].