The muscarinic acetylcholine receptor mediates various cellular responses, including inhibition of adenylate cyclase, breakdown of phosphoinositides and modulation of potassium channels through the action of G proteins. Primary transducing effect is Pi turnover.
Gene References into Functions
PKC delta activation modulates neurotrophins levels by a signaling pathway that involves M1R activation and ultimately leading to an increase in retinal ganglion cells survival in vitro.PMID:29705702
Results establish an intracellular pathway linking M1 receptors, inositol triphosphate receptors, and ubiquitin proteasome system activity to object memory destabilization and suggest a previously unacknowledged role for cholinergic signaling in long-term memory modification and storage.PMID:29030298
Study examined the expression of M1 muscarinic ACh receptors in the hippocampus at 7 and 30 days following experimental bilateral vestibular lesions (BVL) in rats using autoradiography. Analysis of the brain tissue revealed a significant reduction in the number of M1 receptors throughout the hippocampus and striatum at 30 days but not at 7 days following BVL.PMID:27569857
M1 and M3 muscarinic receptors may play a role in the neurotoxicity of anhydroecgonine methyl ester, a cocaine pyrolysis product.PMID:26626425
Our results suggest that the mechanism for the deficits in learning and memory of rats with chronic fluorosis may be associated with the decreased expressions of M1 and M3 in mAChRsPMID:25417050
Neonatal hypoglycemia decreased total muscarinic receptors (p < 0.001) with reduced muscarinic M1, M2, and M3 receptor genes (p < 0.001) in one month old rats.PMID:25474381
M1 cholinergic receptor activation in the central nervous system can modulate endotoxin tolerance in rat liverPMID:25008070
Selective M1 and M4 receptor activation each improved memory.PMID:24480931
Blockade of M1-cholinoreceptors does not prevent the inhibitory effect of carbacholine on contractility of the atrial and ventricular myocardium.PMID:24288746
M1 mAChR may have a role (via the PKC-ERK1/2 pathway) in the neuroprotective effects of lesatropanePMID:23988164
The results of this study findings suggested that M1R mechanisms in the BLa are complex, involving postsynaptic effects as well as regulating release of neurotransmitters from presynaptic terminals.PMID:23559406
There is a significant decrease in muscarinic M1 receptors in the brain stem following spinal cord injury.PMID:23184186
M1-mAChRs function at both surface and intracellular sites in telencephalon neurons including the hippocampusPMID:23678982
Muscarinic receptor expression is developmentally regulated; M1, M3, and M4 receptors are the main subtypes expressed in oligodendrocyte progenitor cells.PMID:21913336
Report therapeutic potential of the M(1) receptor positive allosteric modulator BQCA for the treatment of memory deficits observed in Alzheimer's disease.PMID:23085025
Data suggest that Chrm1 is down-regulated in cell membranes of parotid glands in a model of periodontitis and participates in potassium release; Chrm1 expression appears to return to control level upon indomethacin treatment of periodontitis.PMID:22513211
Muscarinic receptor activation determines the downstream effects of store-operated Ca(2+)-entry on neuronal membrane excitability and energy metabolism.PMID:22088219
Expression of muscarinic receptor M1, M3, M5 subunits decreased in the flocculus after unilateral labyrinthectomy.PMID:19160866
Use of scannning mutagenesis uncovers helix 8 of the M1 mAChR, and a G protein recognition site is delineated in the activated state of the receptor.PMID:21247934
study showed that M and M receptors, IP3 and cGMP were functionally regulated during diabetes as function of agePMID:21054404
These data indicate a novel mechanism of synaptic plasticity in which activation of M1 receptors results in AMPA receptor endocytosis, via a mechanism involving interactions between GluA2, GRIP and liprin-alpha.PMID:19534762
Chrm1 receptor is located on presynaptic glutamatergic terminals afferent to the recorded pyramidal neuron, thus decreasing glutamate release.PMID:20600670
muscarinic M(1) receptor showed a significant decrease and muscarinic M(3) receptor subtype showed a significant increased binding in the cerebral cortex of hypoglycemic rats compared to diabetic and controlPMID:21126518
Cholinergic activation through M(1)-like receptor enhances basket-cell activity & promotes the generation of nested theta & gamma rhythms, enhancing hippocampal function and associated performance.PMID:20433901
Thus, the current study identifies ASIC1a as a novel target for muscarinic signaling.PMID:19730136
Acetylcholine through muscarinic M1 and M3 receptors stimulated calcium release from the pancreatic islets.PMID:19554469
The results indicate that muscarinic M(1) modulation of Ca(V)2.1 Ca(2+) channels in these neurons involves phosphoinositide hydrolysis.PMID:19883739
Results highlight long-term low dose somatotropin and insulin treatment in regulating muscarinic M1 and M3 cholinergic and NMAR1 and mGluR5 glutamate receptor subtypes in aging rats and rejuvenation of brain function.PMID:19666081
no change on muscarinicM1 mRNA expression was found in the hippocampus of isolation reared ratsPMID:12384226
In the neuromuscular junction, the modulation of Ach release via M1 and M2 muscarinic autoreceptors differs between the developing and adult ratPMID:12534975
This represents the first demonstration of M1 receptors on neuronal progenitor cells and supports the notion that M1 muscarinic receptors may play a role in development of the nervous systemPMID:14675151
muscarinic acetylcholine receptor-stimulated inositol 1,4,5-trisphosphate production is augmented by synaptic activity to facilitate Ca2+ release in hippocampal neuronsPMID:15342646
central muscarinic M1 and M3 receptor subtypes functional balance is suggested to regulate sympathetic and parasympathetic activity, which in turn control the islet cell proliferation and glucose homeostasisPMID:15350825
M1 mAChR stimulation leads to GSK-3beta inactivation. Cross-talk between muscarinic signaling and Wnt components underlie neuroprotective effect of M1 mAChR activation.PMID:15474371
endogenous GRK2 is a key regulator of M1 mACh receptor signaling in hippocampal neuronsPMID:15743771
Stimulation of M1 muscarinic acetylcholine receptors activates endogenous transient receptor potential-canonical subtype 6 (TRPC6) channels in neuronal PC12D cells.PMID:15994335
KCNQ channel currents in striatal medium spiny neurons were potently reduced by M1 muscarinic receptors.PMID:16093396
ductules and epididymis suggests that these receptors play a role in the modulation of luminal fluid composition and smooth muscle contraction.PMID:16160857
study shows that infection with low numbers of Hymenolepis diminuta leads to modulation of the cholinergic components of the myenteric plexus & M2 receptor mRNA & that large number of worms result in suppression in relative expression of M1 receptor mRNAPMID:16541262
results show that the dicyclomine did not affect IA and CFC consolidation, suggesting specific involvement of M1 muscarinic receptor only in acquisition these tasks, and these effects was not state-dependentPMID:16647280
Data suggest that acetylcholine acting on M1 and M2 acetylcholine receptors may contribute to selective excitability enhancement or depression in individual, rostrally projecting sensory neurons.PMID:16820015
Ach agonists inhibit the non-quantal secretion of ACh from motor nerve terminals by acting on post-synaptic M1 receptors coupled to Ca(2+) channels in the sarcolemma to induce sarcoplasmic Ca(2+)-dependent synthesis and the release of NO.PMID:17561934
The findings suggest that activation of M1-type muscarinic cholinergic receptors in the dorsomedial striatum facilitate the flexible shifting of response patterns by maintaining or learning a new choice pattern once selected.PMID:17709264
Four derivatives (5a-5c and 5e) showed considerable M1 receptor binding affinity (in vitro) and elicited beneficial effects in vivo memory and learning models (Rodent memory evaluation, plus and Y maze studies).PMID:17719699
Study suggests that formation of a direct hydrogen bond between the highly conserved side chains of Asp71 and Asn414 may be a critical feature stabilizing the activated state of the M1 muscarinic acetylcholine receptor.PMID:17823120
Taken together these data suggest that the level of synaptic activity may determine the different kinases recruited to regulate M1 mACh receptor desensitization in neurons.PMID:17908240
insulin modulates binding parameters and gene expression of total and muscarinic M1 receptors.PMID:17960828
Data show that L- and N-type calcium channel current, but not M-current inhibition by M1 muscarinic receptors requires DAG lipase activity.PMID:18247369
These results provide further evidence of the expression of the M(1) muscarinic receptor subtype in the rat heartPMID:18443764
Data suggest that 77-LH-28-1 is a potent, selective, bioavailable and brain-penetrant agonist at the M1 mAChR.PMID:18454168