Evidence map›Paper›PMID 22918821›Full record

ArticleCell biochemistry and biophysics2013

Methadone but not morphine inhibits lubiprostone-stimulated Cl- currents in T84 intestinal cells and recombinant human ClC-2, but not CFTR Cl- currents.

John Cuppoletti, Jayati Chakrabarti, Kirti Tewari, Danuta H Malinowska

Open access · hybridAbstract read
In one paragraph

Article in Cell biochemistry and biophysics, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
3.9field-weighted citation impact, top 7% 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

25 citing papers in PubMed, 46 citations in OpenAlex.

  1. Trial
  2. Review
  3. Review
  4. Review
  5. Article
  6. Review
  7. Review
  8. Article
  9. Article
  10. Opioids in Gastroenterology: Treating Adverse Effects and Creating Therapeutic Benefits.Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association · 2017
    Review
  11. Review
  12. Opioids and GI Motility-Friend or Foe?Current treatment options in gastroenterology · 2016
    Review
  13. Review
  14. Opioid-induced constipation: advances and clinical guidance.Therapeutic advances in chronic disease · 2016
    Review
  15. New Options in Constipation Management.Current oncology reports · 2015
    Review
  16. Evolving paradigms in the treatment of opioid-induced bowel dysfunction.Therapeutic advances in gastroenterology · 2015
    Review
  17. Review
  18. Lubiprostone in constipation: clinical evidence and place in therapy.Therapeutic advances in chronic disease · 2015
    Review
  19. Article
  20. 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

4 authors at 2 institutions in 1 country.

John CuppolettiDepartment of Molecular and Cellular Physiology, University of Cincinnati College of Medicine, 231 Albert Sabin Way, Cincinnati, OH 45267-0576, USA. John.Cuppoletti@uc.edu
Jayati Chakrabarti
Kirti Tewari
Danuta H Malinowska
Sabin Vaccine Institute · USUniversity of Cincinnati Medical Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In clinical trials, methadone, but not morphine, appeared to prevent beneficial effects of lubiprostone, a ClC-2 Cl(-) channel activator, on opioid-induced constipation. Effects of methadone and morphine on lubiprostone-stimulated Cl(-) currents were measured by short circuit current (Isc) across T84 cells. Whole cell patch clamp of human ClC-2 (hClC-2) stably expressed in HEK293 cells and in a high expression cell line (HEK293EBNA) as well as human CFTR (hCFTR) stably expressed in HEK293 cells was used to study methadone and morphine effects on recombinant hClC-2 and hCFTR Cl(-) currents. Methadone but not morphine inhibited lubiprostone-stimulated Isc in T84 cells with half-maximal inhibition at 100 nM. Naloxone did not affect lubiprostone stimulation or methadone inhibition of Isc. Lubiprostone-stimulated Cl(-) currents in hClC-2/HEK293 cells, but not forskolin/IBMX-stimulated Cl(-) currents in hCFTR/HEK293 cells, were inhibited by methadone, but not morphine. HEK293EBNA cells expressing hClC-2 showed time-dependent, voltage-activated, CdCl2-inhibited Cl(-) currents in the absence (control) and the presence of lubiprostone. Methadone, but not morphine, inhibited control and lubiprostone-stimulated hClC-2 Cl(-) currents with half-maximal inhibition at 100 and 200-230 nM, respectively. Forskolin/IBMX-stimulated hClC-2 Cl(-) currents were also inhibited by methadone. Myristoylated protein kinase inhibitor (a specific PKA inhibitor) inhibited forskolin/IBMX- but not lubiprostone-stimulated hClC-2 Cl(-) currents. Methadone caused greater inhibition of lubiprostone-stimulated currents added before patching (66.1 %) compared with after patching (28.7 %). Methadone caused inhibition of lubiprostone-stimulated Cl(-) currents in T84 cells and control; lubiprostone- and forskolin/IBMX-stimulated recombinant hClC-2 Cl(-) currents may be the basis for reduced efficacy of lubiprostone in methadone-treated patients.

Indexed as

AlprostadilBiological TransportCadmium ChlorideChloride ChannelsColforsinCystic Fibrosis Transmembrane Conductance RegulatorDrug Evaluation, PreclinicalHEK293 CellsHumansLubiprostoneMethadoneMorphineNaloxonePatch-Clamp TechniquesRecombinant ProteinsTime FactorsAlprostadilCadmium ChlorideCFTR protein, humanChloride ChannelsColforsinCystic Fibrosis Transmembrane Conductance RegulatorLubiprostoneMethadoneMorphineNaloxoneRecombinant Proteins

Identifiers

PMID22918821
PMCPMC3627040
OpenAlexW1979091928

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.