Results 41 to 50 of about 81,908 (215)

Site selective C–H functionalization of Mitragyna alkaloids reveals a molecular switch for tuning opioid receptor signaling efficacy

open access: yesNature Communications, 2021
Mitragynine (MG) is an indole alkaloid from kratom plant that binds opioid receptors and as such presents a scaffold for the development of atypical opioid receptor modulators.
Srijita Bhowmik   +13 more
doaj   +1 more source

Methadone for Cancer Pain

open access: yesPalliative Care, 2010
Pain is one of the most common and incapacitating symptoms experienced by patients with advanced cancer. Methadone is a potent opioid with strong affinity for the µ opioid receptor. In addition to being a potent µ opioid receptor ligand, methadone blocks
Eric E. Prommer
doaj   +2 more sources

Effects of Loperamide on Mechanical Allodynia Induced by Herpes Simplex Virus Type-1 in Mice

open access: yesJournal of Pharmacological Sciences, 2007
In the present study, we investigated whether the peripherally acting µ-opioid receptor agonist loperamide would inhibit allodynia in the non-inflamed dermatome of mice with herpetic pain.
Atsushi Sasaki   +5 more
doaj   +1 more source

Opioids and opioid receptors orchestrate wound repair [PDF]

open access: yesTranslational Research, 2017
We have previously shown that topical opioids including morphine and its congeners promote healing of full thickness ischemic wounds in rats. We examined the contribution of mu opioid receptor (MOPr)-mediated healing of full thickness ischemic wounds using MOPr and delta or kappa opioid receptor knockout (KO) mice. Wound closure in the early (day 5) as
Kalpna Gupta   +9 more
openaire   +3 more sources

µ-Opioid receptor antagonism facilitates the anxiolytic-like effect of oxytocin in mice

open access: yesTranslational Psychiatry
Mood and anxiety disorders are leading causes of disability worldwide and are major contributors to the global burden of diseases. Neuropeptides, such as oxytocin and opioid peptides, are important for emotion regulation.
Khalin E. Nisbett   +2 more
doaj   +1 more source

Better agonist for the opioid receptors [PDF]

open access: yesChemistry Central Journal, 2018
This commentary highlights the recent work published in journal Nature on the structural based discovery of novel analgesic compounds for opioid receptors with minimal effects. Manglik et al. selectively targeted the Gi based μOR pathway instead of the β-arrestin pathway of the opioids. The computational screening of millions of compounds showed a list
Syed Lal Badshah   +3 more
openaire   +3 more sources

Effects of Central Administration of Opioid Peptides, Vasotocin, Mesotocin, and Corticotrophin-Releasing Factor on Water Intake in Chicks

open access: yesThe Journal of Poultry Science
Freedom from thirst is an undeniable requirement of the poultry industry. However, the regulatory mechanisms underlying water intake in chicks are not yet fully understood.
Yuhui Zhang   +4 more
doaj   +1 more source

Peripheral Opioid Receptors

open access: yesAnnals of Medicine, 1995
Recent experimental and clinical research has demonstrated that opioids can produce potent and receptor-specific analgesic effects outside the central nervous system. Opioid receptors are localized on peripheral terminals of sensory nerves and their endogenous ligands, opioid peptides, have been discovered in immune cells within inflamed tissue.
Michael Schäfer   +2 more
openaire   +3 more sources

Opioid receptors

open access: yesGenome Biology, 2001
Mouse μ-opioid receptor carboxy-terminal splice variants have been shown to differ in their responses to agonists.
openaire   +2 more sources

Molecular Aspects of Opioid Receptors and Opioid Receptor Painkillers

open access: yes, 2012
The unpleasant sensation of pain is experienced by all human beings at a given point in life. When pain gets severe and/or chronic it requires medical treatment. For over a thousand years, opioid agonists have been employed therapeutically to treat pain, with the first reports of such use involving the alkaloid morphine dated to the second century B.C.(
Austin B. Yongye   +1 more
openaire   +4 more sources

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