JNJ-20788560 [9-(8-Azabicyclo[3.2.1]oct-3-ylidene)-9H-xanthene-3-carboxylic Acid Diethylamide], a Selective Delta Opioid Receptor Agonist, Is a Potent and Efficacious Antihyperalgesic Agent That Does Not Produce Respiratory Depression, Pharmacologic Tolerance, or Physical Dependence

μ-Opioid analgesics are a mainstay in the treatment of acute and chronic pain of multiple origins, but their side effects, such as constipation, respiratory depression, and abuse liability, adversely affect patients. The recent demonstration of the up-regulation and membrane targeting of the δ-opioi...

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Veröffentlicht in:The Journal of pharmacology and experimental therapeutics 2009-04, Vol.329 (1), p.241-251
Hauptverfasser: Codd, Ellen E., Carson, John R., Colburn, Raymond W., Stone, Dennis J., Van Besien, Christopher R., Zhang, Sui-Po, Wade, Paul R., Gallantine, Elizabeth L., Meert, Theo F., Molino, Lory, Pullan, Shirley, Razler, Christine M., Dax, Scott L., Flores, Christopher M.
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container_issue 1
container_start_page 241
container_title The Journal of pharmacology and experimental therapeutics
container_volume 329
creator Codd, Ellen E.
Carson, John R.
Colburn, Raymond W.
Stone, Dennis J.
Van Besien, Christopher R.
Zhang, Sui-Po
Wade, Paul R.
Gallantine, Elizabeth L.
Meert, Theo F.
Molino, Lory
Pullan, Shirley
Razler, Christine M.
Dax, Scott L.
Flores, Christopher M.
description μ-Opioid analgesics are a mainstay in the treatment of acute and chronic pain of multiple origins, but their side effects, such as constipation, respiratory depression, and abuse liability, adversely affect patients. The recent demonstration of the up-regulation and membrane targeting of the δ-opioid receptor (DOR) following inflammation and the consequent enhanced therapeutic effect of δ-opioid agonists have enlivened the search for δ-opioid analgesic agents. JNJ-20788560 [9-(8-azabicyclo-[3.2.1]oct-3-ylidene)-9H-xanthene-3-carboxylic acid diethylamide] had an affinity of 2.0 nM for DOR (rat brain cortex binding assay) and a naltrindole sensitive DOR potency of 5.6 nM (5′-O-(3-[35S]thio)triphosphate assay). The compound had a potency of 7.6 mg/kg p.o. in a rat zymosan radiant heat test and of 13.5 mg/kg p.o. in a rat Complete Freund’s adjuvant RH test but was virtually inactive in an uninflamed radiant heat test. In limited studies, tolerance was not observed to the antihyperalgesic or antinociceptive effects of the compound. Unlike ibuprofen, JNJ-20788560 did not produce gastrointestinal (GI) erosion. Although morphine reduced GI motility at all doses tested and reached nearly full effect at the highest dose, JNJ-20788560 did not retard transit at the lowest dose and reached only 11% reduction at the highest dose administered. Unlike morphine, JNJ-20788560 did not exhibit respiratory depression (blood gas analysis), and no withdrawal signs were precipitated by the administration of opioid (μ or δ) antagonists. Coupled with the previously published lack of self-administration behavior of the compound by alfentanil-trained primates, these findings strongly recommend δ-opioid agonists such as JNJ-20788560 for the relief of inflammatory hyperalgesia.
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subjects Alfentanil - pharmacology
Analgesics, Opioid
Animals
Azabicyclo Compounds - adverse effects
Azabicyclo Compounds - pharmacology
Azabicyclo Compounds - toxicity
Cricetinae
Drug Tolerance
Gastrointestinal Motility - drug effects
Guanosine 5'-O-(3-Thiotriphosphate) - metabolism
Hot Temperature
Hyperalgesia - drug therapy
Irritants - toxicity
Male
Mice
Pain Measurement - drug effects
Rats
Rats, Wistar
Receptors, Opioid, delta - agonists
Receptors, Opioid, delta - metabolism
Respiratory Insufficiency - chemically induced
Respiratory Insufficiency - physiopathology
Seizures - chemically induced
Self Administration
Stomach Ulcer - chemically induced
Stomach Ulcer - pathology
Substance Withdrawal Syndrome - psychology
Substance-Related Disorders - physiopathology
Xanthenes - adverse effects
Xanthenes - pharmacology
Xanthenes - toxicity
Zymosan
title JNJ-20788560 [9-(8-Azabicyclo[3.2.1]oct-3-ylidene)-9H-xanthene-3-carboxylic Acid Diethylamide], a Selective Delta Opioid Receptor Agonist, Is a Potent and Efficacious Antihyperalgesic Agent That Does Not Produce Respiratory Depression, Pharmacologic Tolerance, or Physical Dependence
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