Results 11 to 20 of about 33,193 (249)

Opioid Receptor-Mediated Regulation of Neurotransmission in the Brain

open access: yesFrontiers in Molecular Neuroscience, 2022
Opioids mediate their effects via opioid receptors: mu, delta, and kappa. At the neuronal level, opioid receptors are generally inhibitory, presynaptically reducing neurotransmitter release and postsynaptically hyperpolarizing neurons.
Kaitlin C. Reeves   +6 more
doaj   +1 more source

The opioid receptor: emergence through millennia of pharmaceutical sciences

open access: yesFrontiers in Pain Research, 2023
Throughout history humanity has searched for an optimal approach to the use of opioids that maximizes analgesia while minimizing side effects. This review reflects upon the conceptualization of the opioid receptor and the critical role that the ...
Carolyn A. Fairbanks   +4 more
doaj   +1 more source

Heteromerization of Endogenous Mu and Delta Opioid Receptors Induces Ligand-Selective Co-Targeting to Lysosomes

open access: yesMolecules, 2020
Increasing evidence indicates that native mu and delta opioid receptors can associate to form heteromers in discrete brain neuronal circuits. However, little is known about their signaling and trafficking.
Lyes Derouiche   +4 more
doaj   +1 more source

Expression and Localization of Opioid Receptors in Male Germ Cells and the Implication for Mouse Spermatogenesis. [PDF]

open access: yesPLoS ONE, 2016
The presence of endogenous opioid peptides in different testicular cell types has been extensively characterized and provides evidence for the participation of the opioid system in the regulation of testicular function.
Haizea Estomba   +6 more
doaj   +1 more source

Opioid Receptors in Immune and Glial Cells-Implications for Pain Control [PDF]

open access: yes, 2020
Opioid receptors comprise μ (MOP), δ (DOP), κ (KOP), and nociceptin/orphanin FQ (NOP) receptors. Opioids are agonists of MOP, DOP, and KOP receptors, whereas nociceptin/orphanin FQ (N/OFQ) is an agonist of NOP receptors.
Celik, Melih Ö., Machelska, Halina
core   +1 more source

Heterodimerization of Mu Opioid Receptor Protomer with Dopamine D2 Receptor Modulates Agonist-Induced Internalization of Mu Opioid Receptor [PDF]

open access: yesBiomolecules, 2019
The interplay between the dopamine (DA) and opioid systems in the brain is known to modulate the additive effects of substances of abuse. On one hand, opioids serve mankind by their analgesic properties, which are mediated via the mu opioid receptor (MOR), a Class A G protein-coupled receptor (GPCR), but on the other hand, they pose a potential threat ...
Lakshmi Vasudevan   +5 more
openaire   +5 more sources

Nitro-benzylideneoxymorphone, a bifunctional mu and delta opioid receptor ligand with high mu opioid receptor efficacy

open access: yesFrontiers in Pharmacology, 2023
Introduction: There is a major societal need for analgesics with less tolerance, dependence, and abuse liability. Preclinical rodent studies suggest that bifunctional ligands with both mu (MOPr) and delta (DOPr) opioid peptide receptor activity may produce analgesia with reduced tolerance and other side effects.
Keith M. Olson   +11 more
openaire   +3 more sources

Сentral and peripheral mechanisms of mu-opioid analgesia and tolerance

open access: yesВестник анестезиологии и реаниматологии, 2020
Objective – An analysis of the basic science and clinical publications found in PubMed, Medline, and Web of Science. The search covered modern laboratory and clinical mechanisms of peripheral mu opioid analgesia, the role of peripheral mu receptors in ...
Yu. A. Kolesnikov
doaj   +1 more source

Recent Chemical and Pharmacological Developments on 14-Oxygenated-N-methylmorphinan-6-ones

open access: yesMolecules, 2021
Adequate pain management, particularly chronic pain, remains a major challenge associated with modern-day medicine. Current pharmacotherapy offers unsatisfactory long-term solutions due to serious side effects related to the chronic administration of ...
Mariana Spetea, Helmut Schmidhammer
doaj   +1 more source

Mu opioid receptor regulation and opiate responsiveness [PDF]

open access: yesThe AAPS Journal, 2005
Opiate drugs such as morphine are well known for their ability to produce potent analgesia as well as such unwanted side effects as tolerance, physical dependence, respiratory suppression and constipation. Opiates act at opioid receptors, which belong to the family of G protein-coupled receptors.
Kirsten M, Raehal, Laura M, Bohn
openaire   +2 more sources

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