Monoaminergic activity enhancer site (MAE site) (MAE site)

The monoaminergic activity enhancer (MAE) site is a specific regulatory site located on the terminals of monoaminergic neurons, including dopaminergic, noradrenergic, and serotonergic cells (Knoll, 1998, Life Sci). Unlike traditional psychostimulants that induce non-vesicular release or block reuptake, ligands for the MAE site enhance the amount of neurotransmitter released specifically in response to an action potential, a process known as impulse-evoked release (Miklya, 2011, Front Pharmacol). This mechanism allows for the strengthening of physiological signaling without depleting neurotransmitter stores or causing the neurotoxicity associated with traditional releasers like amphetamine (Knoll et al., 1999, CNS Drug Rev). The site was primarily characterized through the study of compounds like (-)-BPAP and (-)-PPAP, which exhibit high-affinity binding and potent enhancer effects at picomolar to nanomolar concentrations (Shimazu et al., 2003, Eur J Pharmacol). Therapeutically, targeting this site is explored for the treatment of depression, cognitive deficits, and neurodegenerative disorders such as Parkinson's and Alzheimer's diseases, as it may provide neuroprotective effects and restore waning monoaminergic tone (Knoll, 2003, Neurochem Res).

Other names

Enhancer siteBPAP binding sitePPAP binding siteMonoaminergic activity enhancer receptor

Enhancement of impulse-evoked release of catecholamines and serotonin from monoaminergic neurons