Evidence map›Paper›PMID 22129596›Full record

ArticleThe Journal of pharmacology and experimental therapeutics2012

The role of β-arrestin2 in the mechanism of morphine tolerance in the mouse and guinea pig gastrointestinal tract.

Minho Kang, Hercules T Maguma, Tricia H Smith, Gracious R Ross, William L Dewey, Hamid I Akbarali

Abstract read
In one paragraph

Article in The Journal of pharmacology and experimental therapeutics, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
–field-weighted citation impact
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

36 citing papers in PubMed.

  1. Review
  2. Article
  3. Review
  4. The Guts of the Opioid Crisis.Physiology (Bethesda, Md.) · 2021
    Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Review
  11. Article
  12. Inflammation-associated changes in DOR expression and function in the mouse colon.American journal of physiology. Gastrointestinal and liver physiology · 2018
    Article
  13. The gut-brain interaction in opioid tolerance.Current opinion in pharmacology · 2017
    Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Distribution and trafficking of the μ-opioid receptor in enteric neurons of the guinea pig.American journal of physiology. Gastrointestinal and liver physiology · 2016
    Article
  20. The Impact of Opioid Treatment on Regional Gastrointestinal Transit.Journal of neurogastroenterology and motility · 2016
    Article
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

6 authors.

Minho KangDepartment of Pharmacology and Toxicology, Virginia Commonwealth University, 1112 E. Clay St., Richmond, VA 23298, USA.
Hercules T Maguma
Tricia H Smith
Gracious R Ross
William L Dewey
Hamid I Akbarali

Funding

TRAINING IN THE PHARMACOLOGY OF ABUSED DRUGST32DA007027 · NIDA · VIRGINIA COMMONWEALTH UNIVERSITY · PI William L. Dewey · 1985 to 2026
$14.7M
THE ROLE OF ENDOGENOUS OPIOIDS IN SUDDEN INFANT DEATHP50DA005274 · NIDA · VIRGINIA COMMONWEALTH UNIVERSITY · PI ABOOD, MARY E · 1988 to 2011
$12.6M
Opioid tolerance and bowel dysfunctionR01DA024009 · NIDA · VIRGINIA COMMONWEALTH UNIVERSITY · PI AKBARALI, HAMID I, DEWEY, WILLIAM L. · 2009 to 2015
$2.1M
NIDA NIH HHS P50 DA005274NIDA NIH HHS P50-DA005274NIDA NIH HHS R01 DA024009NIDA NIH HHS R01-DA024009NIDA NIH HHS T32 DA007027NIDA NIH HHS T32-DA007027
6 · The paper itself

Abstract

β-Arrestin2 has been reported to play an essential role in analgesic tolerance. Analgesic tolerance without concomitant tolerance to constipation is a limiting side effect of chronic morphine treatment. Because tolerance to morphine develops in the mouse ileum but not the colon, we therefore examined whether the role of β-arrestin2 in the mechanism of morphine tolerance differs in the ileum and colon. In both guinea pig and mouse, chronic in vitro exposure (2 h, 10 μM) to morphine resulted in tolerance development in the isolated ileum but not the colon. The IC(50) values for morphine-induced inhibition of electrical field stimulation contraction of guinea pig longitudinal muscle myenteric plexus shifted rightward in the ileum from 5.7 ± 0.08 (n = 9) to 5.45 ± 0.09 (n = 6) (p < 0.001) after morphine exposure. A significant shift was not observed in the colon. Similar differential tolerance was seen between the mouse ileum and the colon. However, tolerance developed in the colon from β-arrestin2 knockout mice. β-Arrestin2 and extracellular signal-regulated kinase 1/2 expression levels were determined further by Western blot analyses in guinea pig longitudinal muscle myenteric plexus. A time-dependent decrease in the expression of β-arrestin2 and extracellular signal-regulated kinase 1/2 occurred in the ileum but not the colon after 2 h of morphine (10 μM) exposure. Naloxone prevented the decrease in β-arrestin2. In the isolated ileum from guinea pigs chronically treated in vivo with morphine for 7 days, neither additional tolerance to in vitro exposure of morphine nor a decrease in β-arrestin2 occurred. We conclude that a decrease in β-arrestin2 is associated with tolerance development to morphine in the gastrointestinal tract.

Indexed as

Analgesics, OpioidAnimalsArrestinsbeta-ArrestinsDrug ToleranceExtracellular Signal-Regulated MAP KinasesGastrointestinal TractGuinea PigsMaleMiceMice, KnockoutMorphineMyenteric PlexusAnalgesics, OpioidArrestinsbeta-ArrestinsExtracellular Signal-Regulated MAP KinasesMorphine

Identifiers

PMID22129596
PMCPMC3286318

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.