Results 81 to 90 of about 90,845 (196)

Gain of function mutants: Ion channels and G protein-coupled receptors [PDF]

, 2000
Many ion channels and receptors display striking phenotypes for gain-of-function mutations but milder phenotypes for null mutations. Gain of molecular function can have several mechanistic bases: selectivity changes, gating changes including constitutive
Karschin, Andreas, Lester, Henry A.
core   +1 more source

Golden Anniversary of the Nicotinic Receptor [PDF]

Neuron, 2020
The high-resolution structure of the nicotinic acetylcholine receptor from Torpedo electric tissue in association with the snake toxin α-bungarotoxin (Rahman et al., 2020) is presented 50 years after its identification as the first neurotransmitter receptor and ligand-gated ion channel.
openaire   +2 more sources

CHRNA5 links chandelier cells to severity of amyloid pathology in aging and Alzheimer’s disease

Translational Psychiatry
Changes in high-affinity nicotinic acetylcholine receptors are intricately connected to neuropathology in Alzheimer’s Disease (AD). Protective and cognitive-enhancing roles for the nicotinic α5 subunit have been identified, but this gene has not been ...
Jonas Rybnicek, Yuxiao Chen, Milos Milic, Earvin S. Tio, JoAnne McLaurin, Timothy J. Hohman, Philip L. De Jager, Julie A. Schneider, Yanling Wang, David A. Bennett, Shreejoy Tripathy, Daniel Felsky, Evelyn K. Lambe   +12 more
doaj   +1 more source

Characterization of nAChRs in Nematostella vectensis supports neuronal and non-neuronal roles in the cnidarian–bilaterian common ancestor

EvoDevo, 2019
Background Nicotinic and muscarinic acetylcholine receptors likely evolved in the cnidarian–bilaterian common ancestor. Both receptor families are best known for their role at chemical synapses in bilaterian animals, but they also have described roles as
Dylan Z. Faltine-Gonzalez, Michael J. Layden   +1 more
doaj   +1 more source

Simultaneous Comparison of Nicotinic Receptor Antagonists on Three Nicotinic Acetylcholine Receptors

Journal of Pharmacy and Pharmacology, 1995
AbstractThe relative potencies of several nicotinic cholinoceptor antagonists in producing tetanic fade and reduction of striated muscle contraction were investigated in the isolated guinea-pig oesophagus as well as the guinea-pig and rat phrenic nerve-diaphragm preparations.
K P, Kerr, J E, Stevenson, F, Mitchelson
openaire   +2 more sources

Inhibition of nicotinic acetylcholine receptors, a novel facet in the pleiotropic activities of snake venom phospholipases A2.

PLoS ONE, 2014
Phospholipases A2 represent the most abundant family of snake venom proteins. They manifest an array of biological activities, which is constantly expanding. We have recently shown that a protein bitanarin, isolated from the venom of the puff adder Bitis
Catherine A Vulfius, Igor E Kasheverov, Vladislav G Starkov, Alexey V Osipov, Tatyana V Andreeva, Sergey Yu Filkin, Elena V Gorbacheva, Maxim E Astashev, Victor I Tsetlin, Yuri N Utkin   +9 more
doaj   +1 more source

Dataset for the role of sustained attention in memory formation of transgenic mice for Alzheimer׳s disease

Data in Brief, 2016
Weekly submission of rats to active avoidance apparatus can be considered a neurostimulation strategy, once it can improve memory and can increase the density of receptors from different neurotransmitter systems in brain areas related to memory.
Natalia Mendes Schöwe, Eduardo Moreira de Oliveira, Hudson Sousa Buck, Tania Araujo Viel   +3 more
doaj   +1 more source

Mutations in M2 alter the selectivity of the mouse nicotinic acetylcholine receptor for organic and alkali metal cations [PDF]

, 1992
We measured the permeability ratios (PX/PNa) of 3 wild-type, 1 hybrid, 2 subunit-deficient, and 22 mutant nicotinic receptors expressed in Xenopus oocytes for alkali metal and organic cations using shifts in the bi-ionic reversal potential of the ...
Cohen, Bruce N., Davidson, Norman, Labarca, Cesar, Lester, Henry A.   +3 more
core  

Structurally similar allosteric modulators of α7 nicotinic acetylcholine receptors exhibit five distinct pharmacological effects. [PDF]

, 2015
Activation of nicotinic acetylcholine receptors (nAChRs) is associated with the binding of agonists such as acetylcholine to an extracellular site that is located at the interface between two adjacent receptor subunits.
D'Oyley, JM, Dhankher, P, Gill-Thind, JK, Millar, NS, Sheppard, TD   +4 more
core  

Neurotransmitter regulation of neural development: acetylcholine and nicotinic receptors

Anais da Academia Brasileira de Ciências, 2002
Several neurotransmitter systems have been related to developmental processes during the past decade. In this review, we discuss the evidence that the nicotinic acetylcholine receptors could have an additional function during development that may be ...
TORRÃO ANDRÉA S., BRITTO LUIZ R.G.
doaj