Results 61 to 70 of about 145,182 (364)

Neuronal and Extraneuronal Nicotinic Acetylcholine Receptors [PDF]

Current Neuropharmacology, 2018
Neuronal nicotinic acetylcholine receptors (nAChRs) belong to a super-family of Cysloop ligand-gated ion channels that respond to endogenous acetylcholine (ACh) or other cholinergic ligands. These receptors are also the targets of drugs such as nicotine (the main addictive agent delivered by cigarette smoke) and are involved in a variety of ...
Zoli Michele, Pucci Susanna, Vilella Antonietta, Gotti Cecilia   +3 more
openaire   +3 more sources

Single‐Cell Transcriptome Atlas Reveals the Underlying Mechanism of Kynurenic Acid in the Regulation of Tumor Immune Microenvironment in Glioblastoma

Advanced Science, EarlyView.
KYNA regulates the tumor immune microenvironment in glioblastoma. KYNA reprograms the balance between T cell exhaustion and activation to suppress glioblastoma progression through inhibiting exhaustion‐associated markers (such as PD‐1, LAG3, and TOX) and enhancing immune activation and cytotoxicity markers including granzymes GZMA and GZMB.
Di Chen, Liming Sun, Jiajun Chen, Zi Ye, Xuqiang Zhu, Hongjiang Li, Lixin Wu, Guohua Zhao, Qinghao Zhang, Guangyi Jiang, Yuchen Ji, Yake Xue, Hongwei Li, Ruokun Chen, Hongwei Zheng, Rong Zeng, Dongming Yan, Yong Zhang, Xueyuan Li, Jing Yan   +19 more
wiley   +1 more source

Embedded Cholesterol in the Nicotinic Acetylcholine Receptor [PDF]

Biophysical Journal, 2008
The nicotinic acetylcholine receptor (nAChR) is a cation-selective channel central to both neuronal and muscular processes and is considered the prototype for ligand-gated ion channels, motivating a structural determination effort that spanned several decades [Unwin N (2005) Refined structure of the nicotinic acetylcholine receptor at 4 Å ...
Brannigan, Grace, Henin, Jerome, Law, Richard, Eckenhoff, Roderic, Klein, Michael L.   +4 more
openaire   +3 more sources

Chronic Nicotine Selectively Enhances α4β2* Nicotinic Acetylcholine Receptors in the Nigrostriatal Dopamine Pathway [PDF]

, 2009
These electrophysiological experiments, in slices and intact animals, study the effects of in vivo chronic exposure to nicotine on functional α4β2* nAChRs in the nigrostriatal dopaminergic (DA) pathway.
Cai, Haijiang, Lester, Henry A., McIntosh, J. Michael, McKinney, Sheri, Nashmi, Raad, Xiao, Cheng   +5 more
core  

Beyond Cholinesterase Inhibition. Anti-Inflammatory Role and Pharmacological Profile of Current Drug Therapy for Alzheimer's Disease [PDF]

, 2016
Inflammation is a common response of an individual against either exogenous or endogenous damage. The role of inflammation and of inflammatory cells recently emerged also in the pathogenesis of neurodegenerative disorders. Experimental evidences show how
GIUBILEI, Franco
core   +1 more source

Smoking‐Induced STC2+ Tumor Cells Drive Tumor‐Vascular Crosstalk in Laryngeal Squamous Cell Carcinoma via Spatial and Single‐Cell Transcriptomics

Advanced Science, EarlyView.
This study identifies a smoking‐induced mechanism in LSCC whereby nicotine activates the CHRNA5–JAK2/STAT3 axis to drive STC2 transcription. STC2 upregulates TGFBI, which interacts with endothelial ITGA5 to regulate vascular permeability and promote metastasis.
Yujie Shen, Lianchong Gao, Qiang Huang, Liang Zhou, Chengzhi Xu, Chunping Wu   +5 more
wiley   +1 more source

Menthol Suppresses Nicotinic Acetylcholine Receptor Functioning in Sensory Neurons via Allosteric Modulation

Chemical Sensors, 2012
In this study, we have investigated how the function of native and recombinant nicotinic acetylcholine receptors (nAChRs) is modulated by the monoterpenoid alcohol from peppermint (−) menthol.
M. Hans, M. Wilhelm, D. Swandulla
semanticscholar   +1 more source

Structure of nicotinic acetylcholine receptors

Current Opinion in Neurobiology, 1993
Nicotinic acetylcholine (ACh) receptors convert the binding of ACh into the opening of a cation-conducting channel. New information about the regions of the receptor most immediately involved in its function, namely the ACh-binding sites, the gate and the channel, has come from two approaches.
openaire   +2 more sources

Structural model of nicotinic acetylcholine receptor isotypes bound to acetylcholine and nicotine [PDF]

BMC Structural Biology, 2002
Nicotine is a psychoactive drug presenting a diverse array of biological activities, some positive, such as enhancement of cognitive performances, others negative, such as addiction liability. Ligands that discriminate between the different isotypes of nicotinic acetylcholine receptors (nAChRs) could present improved pharmacology and toxicity profile ...
Schapira, Matthieu, Abagyan, Ruben, Totrov, Maxim   +2 more
openaire   +4 more sources

A photoisomerizable muscarinic antagonist. Studies of binding and of conductance relaxations in frog heart [PDF]

, 1982
These experiments employ the photoisomerizable compound, 3,3'-bis- [alpha-(trimethylammonium)methyl]azobenzene (Bis-Q), to study the response to muscarinic agents in frog myocardium. In homogenates from the heart, trans-Bis-Q blocks the binding of [3H]-N-
Birdsall, Nigel J. M., Erlanger, Bernard F., Lester, Henry A., Nargeot, Joel, Stockton, Jane, Wassermann, Norbert H.   +5 more
core   +1 more source