Opioid analgesia and opioid-induced adverse effects: a review

AK Paul, CM Smith, M Rahmatullah, V Nissapatorn… - Pharmaceuticals, 2021 - mdpi.com
Opioids are widely used as therapeutic agents against moderate to severe acute and
chronic pain. Still, these classes of analgesic drugs have many potential limitations as they …

Regulation of µ-opioid receptors: desensitization, phosphorylation, internalization, and tolerance

JT Williams, SL Ingram, G Henderson, C Chavkin… - Pharmacological …, 2013 - ASPET
Morphine and related µ-opioid receptor (MOR) agonists remain among the most effective
drugs known for acute relief of severe pain. A major problem in treating painful conditions is …

Crystal structure of the µ-opioid receptor bound to a morphinan antagonist

A Manglik, AC Kruse, TS Kobilka, FS Thian… - Nature, 2012 - nature.com
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 …

AG protein-biased ligand at the μ-opioid receptor is potently analgesic with reduced gastrointestinal and respiratory dysfunction compared with morphine

SM DeWire, DS Yamashita, DH Rominger, G Liu… - … of Pharmacology and …, 2013 - ASPET
The concept of ligand bias at G protein-coupled receptors broadens the possibilities for
agonist activities and provides the opportunity to develop safer, more selective therapeutics …

The role of kinetic context in apparent biased agonism at GPCRs

C Klein Herenbrink, DA Sykes, P Donthamsetti… - Nature …, 2016 - nature.com
Biased agonism describes the ability of ligands to stabilize different conformations of a
GPCR linked to distinct functional outcomes and offers the prospect of designing pathway …

Monitoring G protein-coupled receptor and β-arrestin trafficking in live cells using enhanced bystander BRET

Y Namkung, C Le Gouill, V Lukashova… - Nature …, 2016 - nature.com
Endocytosis and intracellular trafficking of receptors are pivotal to maintain physiological
functions and drug action; however, robust quantitative approaches are lacking to study …

Biased agonism: lessons from studies of opioid receptor agonists

E Kelly, A Conibear, G Henderson - Annual review of …, 2023 - annualreviews.org
In ligand bias different agonist drugs are thought to produce distinct signaling outputs when
activating the same receptor. If these signaling outputs mediate therapeutic versus adverse …

Therapeutic potential of β-arrestin-and G protein-biased agonists

EJ Whalen, S Rajagopal, RJ Lefkowitz - Trends in molecular medicine, 2011 - cell.com
Members of the seven-transmembrane receptor (7TMR), or G protein-coupled receptor
(GPCR), superfamily represent some of the most successful targets of modern drug therapy …

Quantifying ligand bias at seven-transmembrane receptors

S Rajagopal, S Ahn, DH Rominger… - Molecular …, 2011 - ASPET
Seven transmembrane receptors (7TMRs), commonly referred to as G protein-coupled
receptors, form a large part of the “druggable” genome. 7TMRs can signal through parallel …

Functional selectivity at the μ-opioid receptor: implications for understanding opioid analgesia and tolerance

KM Raehal, CL Schmid, CE Groer, LM Bohn - Pharmacological reviews, 2011 - ASPET
Opioids are the most effective analgesic drugs for the management of moderate or severe
pain, yet their clinical use is often limited because of the onset of adverse side effects. Drugs …