Evidence map›Paper›PMID 12451120›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2002

Chronic morphine treatment inhibits opioid receptor desensitization and internalization.

Daniela A Eisinger, Hermann Ammer, Rüdiger Schulz

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
2.3field-weighted citation impact, top 12% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

31 citing papers in PubMed, 71 citations in OpenAlex.

  1. Addition of a second opioid may improve opioid response in cancer pain: preliminary data.Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer · 2004
    Trial
  2. Review
  3. Article
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  8. Methadone Reverses Analgesic Tolerance Induced by Morphine Pretreatment.The international journal of neuropsychopharmacology · 2016
    Article
  9. Molecular Pharmacology of δ-Opioid Receptors.Pharmacological reviews · 2016
    Review
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Inhibition of Activity of GABA Transporter GAT1 by δ-Opioid Receptor.Evidence-based complementary and alternative medicine : eCAM · 2012
    Article
  18. Article
  19. Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Daniela A EisingerInstitute of Pharmacology, Toxicology and Pharmacy, University of Munich, D-80539 Munich, Germany. eisinger@pharmtox.vetmed.uni-muenchen.de
Hermann Ammer
Rüdiger Schulz
Ludwig-Maximilians-Universität München · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Chronic opioid receptor (OR) activation by morphine causes distinct cellular adaptations responsible for the development of tolerance. The present study examines the effect of chronic morphine exposure on the ability of high-efficacy agonists to mediate delta-OR (DOR) and mu-OR (MOR) uncoupling and internalization, two regulatory mechanisms contributing to rapid desensitization of OR function. Chronic morphine treatment (1 microm; 72 hr) of DOR carrying neuroblastoma x glioma (NG108-15) hybrid cells, a prototypical model system frequently used to study cellular aspects of opioid tolerance, completely blocked the capacity of [d-Ala2, d-Leu5]enkephalin (DADLE) and etorphine to desensitize opioid-stimulated [35S]GTPgammaS binding and to mediate DOR internalization. Similar findings were obtained on stably DOR- and MOR-transfected human embryonic kidney (HEK) 293 cells. Chronic morphine treatment also heterologously impaired agonist regulation of non-opioid G-protein-coupled receptors, such as the m(4)-muscarinic acetylcholine receptor and the brain-type cannabinoid receptor. As a possible underlying mechanism, we found that chronic morphine treatment completely blocked agonist-induced redistribution of beta-arrestin1 in both NG108-15 and stably MOR-transfected HEK293 cells. Moreover, attenuation of beta-arrestin1 function appears to depend on persistent stimulation of MAP kinase activity during the course of chronic morphine treatment, because coincubation of the cells together with the MAP kinase blocker PD98059 fully restored beta-arrestin1 translocation and receptor internalization. These results demonstrate that chronic morphine treatment produces adaptational changes at the beta-arrestin1 level, which in turn attenuates agonist-mediated desensitization and internalization of G-protein-coupled receptors.

Indexed as

AnimalsArrestinsbeta-ArrestinsCell LineEnkephalin, Leucine-2-AlanineEnzyme ActivationEnzyme InhibitorsGTP-Binding ProteinsHumansHybrid CellsIonophoresKidneyMiceMitogen-Activated Protein KinasesMorphineNarcoticsArrestinsbeta-ArrestinsEnkephalin, Leucine-2-AlanineEnzyme InhibitorsGTP-Binding ProteinsIonophoresMitogen-Activated Protein KinasesMorphineNarcoticsReceptor, Muscarinic M4Receptors, CannabinoidReceptors, Cell SurfaceReceptors, DrugReceptors, MuscarinicReceptors, OpioidReceptors, Opioid, deltaReceptors, Opioid, mu

Identifiers

PMID12451120
PMCPMC6758738
OpenAlexW1776637350

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.