Results 21 to 30 of about 81,908 (215)

Small-molecule nociceptin receptor agonist ameliorates mast cell activation and pain in sickle mice

open access: yesHaematologica, 2015
Treatment of pain with morphine and its congeners in sickle cell anemia is suboptimal, warranting the need for analgesics devoid of side effects, addiction and tolerance liability. Small-molecule nociceptin opioid receptor ligands show analgesic efficacy
Derek Vang   +7 more
doaj   +1 more source

Receptors for morphine and opioids

open access: yesGeneral Pharmacology: The Vascular System, 1976
Two points concerning enzymatic systems acting on disposal of morphine are discussed, namely the multiplicity of glucuronyltransferase and the effect of nalorphine on N-demethylation of morphine. Evidences of the presence of at least two different glucuronyltransferases in microsomes of rat liver, kidney and intestine are presented. These evidences are
Sánchez, Emílio   +2 more
openaire   +4 more sources

Morphine stimulates cervical cancer cells and alleviates cytotoxicity of chemotherapeutic drugs via opioid receptor‐dependent and ‐independent mechanisms

open access: yesPharmacology Research & Perspectives, 2022
Morphine is frequently applied in cancer patients for pain management. However, its effects on cancer are not well understood but observed to be specific to certain cancer types. We previously revealed the stimulatory properties of morphine in esophageal
Zhengwen Yu   +3 more
doaj   +1 more source

Biased Opioid Ligands

open access: yesMolecules, 2020
Achieving effective pain management is one of the major challenges associated with modern day medicine. Opioids, such as morphine, have been the reference treatment for moderate to severe acute pain not excluding chronic pain modalities.
Abdelfattah Faouzi   +2 more
doaj   +1 more source

Butorphanol: Effects of a Prototypical Agonist-Antagonist Analgesic on κ-Opioid Receptors

open access: yesJournal of Pharmacological Sciences, 2005
The opioid analgesic, butorphanol (17-cyclobutylmethyl-3,14-dihydroxymorphinan) tartrate is a prototypical agonist-antagonist opioid analgesic agent whose potential for abuse has been the cause of litigation in the United States.
Stephen Commiskey   +3 more
doaj   +1 more source

Opioid-induced mitogen-activated protein kinase signaling in rat enteric neurons following chronic morphine treatment. [PDF]

open access: yesPLoS 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

High-affinity naloxone binding to filamin a prevents mu opioid receptor-Gs coupling underlying opioid tolerance and dependence. [PDF]

open access: yesPLoS ONE, 2008
Ultra-low-dose opioid antagonists enhance opioid analgesia and reduce analgesic tolerance and dependence by preventing a G protein coupling switch (Gi/o to Gs) by the mu opioid receptor (MOR), although the binding site of such ultra-low-dose opioid ...
Hoau-Yan Wang   +2 more
doaj   +1 more source

Molecular Perspectives for mu/delta Opioid Receptor Heteromers as Distinct, Functional Receptors

open access: yesCells, 2014
Opioid receptors are the sites of action for morphine and the other opioid drugs. Abundant evidence now demonstrates that different opioid receptor types can physically associate to form heteromers.
Edmund W. Ong, Catherine M. Cahill
doaj   +1 more source

Co-Evolution of Opioid and Adrenergic Ligands and Receptors: Shared, Complementary Modules Explain Evolution of Functional Interactions and Suggest Novel Engineering Possibilities

open access: yesLife, 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

Pharmacological Profiles of Oligomerized μ-Opioid Receptors

open access: yesCells, 2013
Opioids are widely prescribed pain relievers with multiple side effects and potential complications. They produce analgesia via G-protein-protein coupled receptors: μ-, δ-, κ-opioid and opioid receptor-like 1 receptors.
Ing-Kang Ho, Cynthia Wei-Sheng Lee
doaj   +1 more source

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