Results 11 to 20 of about 331,963 (334)

A nicotinic hypothesis for Covid-19 with preventive and therapeutic implications.

open access: yesComptes rendus. Biologies, 2020
SARS-CoV-2 epidemics raises a considerable issue of public health at the planetary scale. There is a pressing urgency to find treatments based upon currently available scientific knowledge.
J. Changeux   +3 more
semanticscholar   +1 more source

Nicotine Addiction [PDF]

open access: yesNew England Journal of Medicine, 1999
Nicotine maintains tobacco addiction. Nicotine acts on nicotinic cholinergic receptors, which demonstrate diversity in subunit structure, function, and distribution in the nervous system, mediating the multiple actions of nicotine described in tobacco users.
openaire   +3 more sources

Neural signatures of cognitive flexibility and reward sensitivity following nicotinic receptor stimulation in dependent smokers : a randomized trial [PDF]

open access: yes, 2017
IMPORTANCE Withdrawal from nicotine is an important contributor to smoking relapse. Understanding how reward-based decision making is affected by abstinence and by pharmacotherapies such as nicotine replacement therapy and varenicline tartrate may aid ...
Aronson, Sarah E.   +5 more
core   +2 more sources

Alpha9 nicotinic acetylcholine receptors and the treatment of pain [PDF]

open access: yes, 2009
Chronic pain is a vexing worldwide problem that causes substantial disability and consumes significant medical resources. Although there are numerous analgesic medications, these work through a small set of molecular mechanisms.
Absalom, Nathan   +4 more
core   +1 more source

Nicotine Withdrawal [PDF]

open access: yes, 2015
An aversive abstinence syndrome manifests 4-24 h following cessation of chronic use of nicotine-containing products. Symptoms peak on approximately the 3rd day and taper off over the course of the following 3-4 weeks. While the severity of withdrawal symptoms is largely determined by how nicotine is consumed, certain short nucleotide polymorphisms ...
Ian, McLaughlin   +2 more
openaire   +2 more sources

Neuronal and Extraneuronal Nicotinic Acetylcholine Receptors

open access: yesCurrent Neuropharmacology, 2018
Neuronal nicotinic acetylcholine receptors (nAChRs) belong to a super-family of Cys-loop ligand-gated ion chan-nels that respond to endogenous acetylcholine (ACh) or other cholinergic ligands.
M. Zoli   +3 more
semanticscholar   +1 more source

Conditional expression in corticothalamic efferents reveals a developmental role for nicotinic acetylcholine receptors in modulation of passive avoidance behavior [PDF]

open access: yes, 2003
Prenatal nicotine exposure has been linked to attention deficit hyperactivity disorder and cognitive impairment, but the sites of action for these effects of nicotine are still under investigation. High-affinity nicotinic acetylcholine receptors (nAChRs)
Caldarone, Barbara J   +7 more
core   +2 more sources

Structural principles of distinct assemblies of the human α4β2 nicotinic receptor

open access: yesNature, 2018
Fast chemical communication in the nervous system is mediated by neurotransmitter-gated ion channels. The prototypical member of this class of cell surface receptors is the cation-selective nicotinic acetylcholine receptor.
R. M. Walsh   +5 more
semanticscholar   +1 more source

Arachidonic Acid as a Possible Negative Feedback Inhibitor of Nicotinic Acetylcholine Receptors on Neurons [PDF]

open access: yes, 1995
Neuronal acetylcholine receptors, being highly permeable to calcium, are likely to regulate calcium-dependent events in neurons. Arachidonic acid is a membrane-permeant second messenger that can be released from membrane phospholipids by phospholipases ...
Berg, Darwin K.   +3 more
core   +2 more sources

X-ray structure of the human α4β2 nicotinic receptor

open access: yesNature, 2016
Nicotinic acetylcholine receptors are ligand-gated ion channels that mediate fast chemical neurotransmission at the neuromuscular junction and have diverse signalling roles in the central nervous system. The nicotinic receptor has been a model system for
C. L. Morales-Pérez   +2 more
semanticscholar   +1 more source

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