BmK-YA, an enkephalin-like peptide in scorpion venom. [PDF]
PLoS ONE, 2012 By screening extracts of venom from the Asian scorpion Buthus martensii Karsch (BmK) for their abilities to activate opioid receptors, we have identified BmK-YA, an amidated peptide containing an enkephalin-like sequence. BmK-YA is encoded by a precursor
Yan Zhang +5 more
doaj +1 more source
Ligand-Specific Regulation of the Endogenous Mu-Opioid Receptor by Chronic Treatment with Mu-Opioid Peptide Agonist [PDF]
, 2013 Since the discovery of the endomorphins (EM), the postulated endogenous peptide agonists of the mu-opioid receptors, several analogues have been synthesized to improve their binding and pharmacological profiles.
Birkás, Erika +12 more
core +3 more sources
Modulation of Neurally Mediated Vasodepression and Bradycardia by Electroacupuncture through Opioids in Nucleus Tractus Solitarius. [PDF]
, 2018 Stimulation of vagal afferent endings with intravenous phenylbiguanide (PBG) causes both bradycardia and vasodepression, simulating neurally mediated syncope.
Fu, Liang-Wu +3 more
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Receptors for morphine and opioids
General 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 +3 more sources
Peripheral sensitization increases opioid receptor expression and activation by crotalphine in rats.
PLoS ONE, 2014 Inflammation enhances the peripheral analgesic efficacy of opioid drugs, but the mechanisms involved in this phenomenon have not been fully elucidated. Crotalphine (CRP), a peptide that was first isolated from South American rattlesnake C.d.
Vanessa Olzon Zambelli +6 more
doaj +1 more source
Can variability in the effect of opioids on refractory breathlessness be explained by genetic factors? [PDF]
, 2015 © 2015, BMJ Publishing Group. All rights reserved. Objectives: Opioids modulate the perception of breathlessness with a considerable variation in response, with poor correlation between the required opioid dose and symptom severity. The objective of this
Currow, David C. +10 more
core +1 more source
Molecular and cellular mechanisms of the age-dependency of opioid analgesia and tolerance
Molecular Pain, 2012 The age-dependency of opioid analgesia and tolerance has been noticed in both clinical observation and laboratory studies. Evidence shows that many molecular and cellular events that play essential roles in opioid analgesia and tolerance are actually age-
Zhao Jing +4 more
doaj +1 more source
Molecules, 2021 Activated opioid receptors transmit internal signals through two major pathways: the G-protein-mediated pathway, which exerts analgesia, and the β-arrestin-mediated pathway, which leads to unfavorable side effects. Hence, G-protein-biased opioid agonists
Yusuke Karasawa +12 more
doaj +1 more source
Binding mode analyses of NAP derivatives as mu opioid receptor selective ligands through docking studies and molecular dynamics simulation [PDF]
, 2017 Mu opioid receptor selective antagonists are highly desirable because of their utility as pharmacological probes for receptor characterization and functional studies.
Wang, Huiqun +2 more
core +2 more sources
Delta-opioid receptor endocytosis in spinal cord after dermenkephalin activation
BMC Neuroscience, 2000 Background The delta(δ)-opioid receptors belong to the G protein-coupled receptors and in vitro studies have shown that δ-opioid receptors undergo an internalization process in response to agonist stimulation.
Gastard Myriam
doaj +1 more source