Results 41 to 50 of about 2,350,024 (299)

Simultaneous release of glutamate and acetylcholine from single magnocellular "cholinergic" basal forebrain neurons [PDF]

open access: yes, 2006
Basal forebrain (BF) neurons provide the principal cholinergic drive to the hippocampus and cortex. Their degeneration is associated with the cognitive defects of Alzheimer's disease. Immunohistochemical studies suggest that some of these neurons contain
Abogadie, FC, Allen, TGJ, Brown, DA
core   +1 more source

Delineating muscarinic receptor functions [PDF]

open access: yesProceedings of the National Academy of Sciences, 1999
Acetylcholine, as the first chemical molecule to be established as a neurotransmitter, has attracted enduring interest from researchers over several decades. However, deciphering all of the physiological manifestations associated with actions of this molecule has been difficult, and many mysteries of cholinergic neurotransmission still remain to be ...
Marc G. Caron, Raul R. Gainetdinov
openaire   +3 more sources

Structures of the M1 and M2 muscarinic acetylcholine receptor/G-protein complexes

open access: yesScience, 2019
Choosing a partner G protein–coupled receptors (GPCRs) bind ligands outside the cell and trigger events inside the cell by selectively binding and activating specific G proteins. The selectivity occurs even among highly related GPCRs.
S. Maeda   +4 more
semanticscholar   +1 more source

Ligand regulation of the quaternary organization of cell surface M3 muscarinic acetylcholine receptors analyzed by fluorescence resonance energy transfer (FRET) imaging and homogenous time-resolved FRET [PDF]

open access: yes, 2010
Flp-In T-REx 293 cells expressing a wild type human M muscarinic acetylcholine receptor construct constitutively and able to express a Receptor Activated Solely by Synthetic Ligand (RASSL) form of this receptor on demand maintained response to the ...
Alvarez-Curto, Elisa   +3 more
core   +2 more sources

Antispasmodic Effect of Valeriana pilosa Root Essential Oil and Potential Mechanisms of Action: Ex Vivo and In Silico Studies

open access: yesPharmaceutics, 2023
Infusions of Valeriana pilosa are commonly used in Peruvian folk medicine for treating gastrointestinal disorders. This study aimed to investigate the spasmolytic and antispasmodic effects of Valeriana pilosa essential oil (VPEO) on rat ileum.
Roberto O. Ybañez-Julca   +12 more
doaj   +1 more source

Molecular properties of muscarinic acetylcholine receptors

open access: yesProceedings of the Japan Academy. Series B, Physical and biological sciences, 2013
Muscarinic acetylcholine receptors, which comprise five subtypes (M1-M5 receptors), are expressed in both the CNS and PNS (particularly the target organs of parasympathetic neurons). M1-M5 receptors are integral membrane proteins with seven transmembrane
T. Haga
semanticscholar   +1 more source

Inhibition of Subsets of G Protein-coupled Receptors by Empty Mutants of G Protein α Subunits in Go, G11, and G16 [PDF]

open access: yes, 2000
We previously reported that the xanthine nucleotide binding Goα mutant, GoαX, inhibited the activation of Gi-coupled receptors. We constructed similar mutations in G11α and G16α and characterized their nucleotide binding and receptor interaction.
Gu, Lingjie, Simon, Melvin I., Yu, Bo
core   +1 more source

Additive interaction of intrathecal ginsenosides and neostigmine in the rat formalin test [PDF]

open access: yesKorean Journal of Anesthesiology, 2013
BackgroundThe authors evaluated the effect of intrathecal mixture of ginsenosides with neostigmine on formalin-induced nociception and made further clear the role of the spinal muscarinic (M) receptors on the activity of ginsenosides.MethodsA catheter ...
Cheon-Hee Park   +3 more
doaj   +1 more source

Widespread decreases in cortical muscarinic receptors in a subset of people with schizophrenia.

open access: yesInternational Journal of Neuropsychopharmacology, 2013
These studies were undertaken to investigate the selectivity of cortical muscarinic receptor radioligand binding in muscarinic M(1) and M(4) receptor knockout mice and to determine whether a marked decrease in [(3)H]pirenzepine binding in Brodmann's area
A. Gibbons   +6 more
semanticscholar   +1 more source

Carbachol increases intracellular free calcium concentrations in human granulosa-lutein cells [PDF]

open access: yes, 1992
We investigated whether the stimulation of human granulosa-lutein cells with muscarinic and nicotinic receptor agonists can cause increases in intracellular free calcium (Ca2+), using Fura-2 microfluorimetry.
Föhr, K. J.   +3 more
core   +1 more source

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