Results 91 to 100 of about 2,347,334 (218)
Multiple Routes for Glutamate Receptor Trafficking: Surface Diffusion and Membrane Traffic Cooperate to Bring Receptors to Synapses [PDF]
Trafficking of glutamate receptors into and out of synapses is critically involved in the plasticity of excitatory synaptic transmission. Endocytosis and exocytosis of receptors have initially been thought to account alone for this trafficking. However, membrane proteins also traffic through surface lateral diffusion in the plasma membrane. We describe
arxiv
Autoradiographic localization of muscarinic cholinergic receptors in rat brainstem
We have localized muscarinic cholinergic receptors in the rat brainstem by a light microscopic autoradiographic method. Initially, we examined the kinetics and specificity of the binding of radiolabeled quinuclidinyl benzilate ([3H]QNB) in slide-mounted,
J. Wamsley+3 more
semanticscholar +1 more source
Nicotinic Cholinergic Receptors in VTA Glutamate Neurons Modulate Excitatory Transmission
Summary: Ventral tegmental area (VTA) glutamate neurons are important components of reward circuitry, but whether they are subject to cholinergic modulation is unknown.
Yijin Yan+11 more
doaj
Methanolic extract of Clinacanthus nutans Lindau leaves (MECN) has been proven to possess antinociceptive activity that works via the opioid and NO-dependent/cGMP-independent pathways.
Zainul Amiruddin Zakaria+8 more
doaj +1 more source
Cholinergic modulation of microglial activation by α7 nicotinic receptors
Almost all degenerative diseases of the CNS are associated with chronic inflammation. A central step in this process is the activation of brain mononuclear phagocyte cells, called microglia.
R. Shytle+9 more
semanticscholar +1 more source
Cholinergic agents elicit prominent smooth muscle contractions via stimulation of muscarinic receptors that comprise five distinct subtypes (M1–M5). Although such contractions are important for autonomic organs, the role of each subtype has not been ...
M. Matsui+6 more
semanticscholar +1 more source
Selectively driving cholinergic fibers optically in the thalamic reticular nucleus promotes sleep
Cholinergic projections from the basal forebrain and brainstem are thought to play important roles in rapid eye movement (REM) sleep and arousal. Using transgenic mice in which channelrhdopsin-2 is selectively expressed in cholinergic neurons, we show ...
Kun-Ming Ni+9 more
doaj +1 more source
Muscarinic cholinergic receptors in rabbit retina
Abstract Binding sites with high affinity and specificity for [3 H]-quinuclidinyl benzilate are present in rabbit retinal homogenates. Only one set of binding sites was detected with an apparent dissociation constant of 2.13 times 10−10 M and a density of 59.2 fmol mg−1 of protein.
M J Neal, C Dawson
openaire +3 more sources
Steroid Receptors and Vertebrate Evolution [PDF]
Considering that life on earth evolved about 3.7 billion years ago, vertebrates are young, appearing in the fossil record during the Cambrian explosion about 542 to 515 million years ago. Results from sequence analyses of genomes from bacteria, yeast, plants, invertebrates and vertebrates indicate that receptors for adrenal steroids (aldosterone ...
arxiv
Accuracy of direct gradient sensing by cell-surface receptors [PDF]
Chemotactic cells of eukaryotic organisms are able to accurately sense shallow chemical concentration gradients using cell-surface receptors. This sensing ability is remarkable as cells must be able to spatially resolve small fractional differences in the numbers of particles randomly arriving at cell-surface receptors by diffusion.
arxiv