Cholinergic receptors: functional role of nicotinic ACh receptors in brain circuits and disease

Invited Review


The neurotransmitter acetylcholine (ACh) can regulate neuronal excitability throughout the nervous system by acting on both the cys-loop ligand-gated nicotinic ACh receptor channels (nAChRs) and the G protein-coupled muscarinic ACh receptors (mAChRs). The hippocampus is an important area in the brain for learning and memory, where both nAChRs and mAChRs are expressed. The primary cholinergic input to the hippocampus arises from the medial septum and diagonal band of Broca, the activation of which can activate both nAChRs and mAChRs in the hippocampus and regulate synaptic communication and induce oscillations that are thought to be important for cognitive function. Dysfunction in the hippocampal cholinergic system has been linked with cognitive deficits and a variety of neurological disorders and diseases, including Alzheimer’s disease and schizophrenia. My lab has focused on the role of the nAChRs in regulating hippocampal function, from understanding the expression and functional properties of the various subtypes of nAChRs, and what role these receptors may be playing in regulating synaptic plasticity. Here, I will briefly review this work, and where we are going in our attempts to further understand the role of these receptors in learning and memory, as well as in disease and neuroprotection.



This work was supported by the Intramural Research Program of the NIH, National Institute of Environmental Health Sciences.


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© Springer-Verlag Berlin Heidelberg (outside the USA) 2013

Authors and Affiliations

  1. 1.Laboratory of Neurobiology, National Institute of Environmental Health Sciences, National Institutes of HealthDepartment of Health and Human ServicesResearch Triangle ParkUSA

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