Chronic neuropathic pain reduces opioid receptor availability with associated anhedonia in rat
Pain, 2018 The opioid system plays a critical role in both the experience and management of pain. Although acute activation of the opioid system can lead to pain relief, the effects of chronic pain on the opioid system remain opaque.
S. Thompson +8 more
semanticscholar +1 more source
Life, 2021 Cross-talk between opioid and adrenergic receptors is well-characterized and involves second messenger systems, the formation of receptor heterodimers, and the presence of extracellular allosteric binding regions for the complementary ligand; however ...
Robert Root-Bernstein, Beth Churchill
doaj +1 more source
Bidirectional Regulation of Opioid and Chemokine Function
Frontiers in Immunology, 2020 The opioid family of GPCRs consists of the classical opioid receptors, designated μ-, κ-, and δ-opioid receptors, and the orphanin-FQ receptor, and these proteins are expressed on both neuronal and hematopoietic cells.
Thomas J. Rogers
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Cellular Tolerance Induced by Chronic Opioids in the Central Nervous System
Frontiers in Systems Neuroscience, 2022 Opioids are powerful analgesics that elicit acute antinociceptive effects through their action the mu opioid receptor (MOR). However opioids are ineffective for chronic pain management, in part because continuous activation of MORs induces adaptive ...
Sweta Adhikary, John T. Williams
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The Efficacy of Peripheral Opioid Antagonists in Opioid-Induced Constipation and Postoperative Ileus: A Systematic Review of the Literature. [PDF]
, 2017 Opioid-induced constipation has a negative impact on quality of life for patients with chronic pain and can affect more than a third of patients. A related but separate entity is postoperative ileus, which is an abnormal pattern of gastrointestinal ...
Baratta, Jaime L. +5 more
core +1 more source
M3 muscarinic acetylcholine receptor facilitates the endocytosis of mu opioid receptor mediated by morphine independently of the formation of heteromeric complexes [PDF]
, 2017 Morphine inefficiency to induce the internalization of mu opioid (MOP) receptors observed in numerous experimental models constitutes a paradigm of G-protein coupled receptor (GPCR) functional selectivity.
Alvarez-Curto, Elisa +2 more
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Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To investigate the overall use of prescription medications among individuals with multiple sclerosis compared to the general population, with a focus on treatments beyond disease‐modifying therapies. Methods We conducted a nationwide, registry‐based study in Denmark.
Josefine Windfeld‐Mathiasen +4 more
wiley +1 more source
Opioid-induced mitogen-activated protein kinase signaling in rat enteric neurons following chronic morphine treatment. [PDF]
PLoS ONE, 2014 Opioids, acting at μ opioid receptors, are commonly used for pain management. Chronic opioid treatment induces cellular adaptations, which trigger long-term side effects, including constipation mediated by enteric neurons.
Celine Duraffourd +4 more
doaj +1 more source
Dopamine-D1 and δ-opioid receptors co-exist in rat striatal neurons [PDF]
, 2006 Cocaine’s enhancement of dopaminergic neurotransmission in the mesolimbic pathway plays a critical role in the initial reinforcing properties of this drug. However, other neurotransmitter systems are also integral to the addiction process.
Ambrose-Lanci, L. M. +3 more
core +2 more sources
Crystal structure of the μ-opioid receptor bound to a morphinan antagonist
Nature, 2012 Opium is one of the world’s oldest drugs, and its derivatives morphine and codeine are among the most used clinical drugs to relieve severe pain. These prototypical opioids produce analgesia as well as many undesirable side effects (sedation, apnoea and ...
A. Manglik +9 more
semanticscholar +1 more source