Evidence map›Paper›PMID 26352668›Full record

ArticleACS chemical neuroscience2015

The bifunctional μ opioid agonist/antioxidant [Dmt(1)]DALDA is a superior analgesic in an animal model of complex regional pain syndrome-type i.

Peter W Schiller, Thi M-D Nguyen, Amy Saray, Annie Wing Hoi Poon, André Laferrière, Terence J Coderre

Open access · greenAbstract read
In one paragraph

Article in ACS chemical neuroscience, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.5field-weighted citation impact, top 17% 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

10 citing papers in PubMed, 17 citations in OpenAlex.

  1. Pd(II)-Catalyzed Strategies for the β-Arylation of α-Amino Acids: An Overview.Chemistry (Weinheim an der Bergstrasse, Germany) · 2026
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  10. [Dmt(1)]DALDA analogues modified with tyrosine analogues at position 1.Bioorganic & medicinal chemistry letters · 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 at 3 institutions in 1 country.

Peter W SchillerLaboratory of Chemical Biology and Peptide Research, Clinical Research Institute of Montreal, 110 Pine Ave. West, Montreal, Quebec Canada H2W 1R7.
Thi M-D NguyenLaboratory of Chemical Biology and Peptide Research, Clinical Research Institute of Montreal, 110 Pine Ave. West, Montreal, Quebec Canada H2W 1R7.
Amy SarayDepartment of Psychology, McGill University , 1205 Dr. Penfield Ave., Montreal, Quebec, Canada H3A 1B1.
Annie Wing Hoi PoonAnesthesia Research Unit, Department of Anesthesia, McGill University , 3655 Promenade Sir William Osler, Montreal, Quebec, Canada H3G 1Y6.
André LaferrièreAnesthesia Research Unit, Department of Anesthesia, McGill University , 3655 Promenade Sir William Osler, Montreal, Quebec, Canada H3G 1Y6.
Terence J CoderreAnesthesia Research Unit, Department of Anesthesia, McGill University , 3655 Promenade Sir William Osler, Montreal, Quebec, Canada H3G 1Y6.
McGill University · CAMontreal Clinical Research Institute · CAUniversité de Montréal · CA

Funding

DEVELOPMENT OF RECEPTOR-SPECIFIC OPIOID PEPTIDE ANALOGSR01DA004443 · NIDA · CLINICAL RESEARCH INSTITUTE OF MONTREAL · PI SCHILLER, PETER W · 1987 to 2016
$2.0M
DEVELOPMENT OF RECEPTOR SPECIFIC OPIOID PEPTIDE ANALOGSR37DA004443 · NIDA · CLINICAL RESEARCH INSTITUTE OF MONTREAL · PI SCHILLER, PETER W · 1997 to 2003
$621k
Canadian Institutes of Health Research MOP-119279Canadian Institutes of Health Research MOP-89716NIDA NIH HHS DA004443NIDA NIH HHS R01 DA004443NIDA NIH HHS R37 DA004443
6 · The paper itself

Abstract

Reactive oxygen species (ROS) play an important role in the development of complex regional pain syndrome-Type I (CRPS-I), as also demonstrated with the chronic post ischemia pain (CPIP) animal model of CRPS-I. We show that morphine and the antioxidant N-acetylcysteine (NAC) act synergistically to reduce mechanical allodynia in CPIP rats. The tetrapeptide amide [Dmt(1)]DALDA (H-Dmt-d-Arg-Phe-Lys-NH2) is a potent and selective μ opioid receptor (MOR) agonist with favorable pharmacokinetic properties and with antioxidant activity due to its N-terminal Dmt (2',6'-dimethyltyrosine) residue. In the CPIP model, [Dmt(1)]DALDA was 15-fold more potent than morphine in reversing mechanical allodynia and 4.5-fold more potent as analgesic in the heat algesia test. The results indicate that bifunctional compounds with MOR agonist/antioxidant activity have therapeutic potential for the treatment of CRPS-I.

Indexed as

AcetylcysteineAnalgesics, OpioidAnimalsAntioxidantsArea Under CurveChronic PainDisease Models, AnimalDose-Response Relationship, DrugDrug Evaluation, PreclinicalDrug SynergismHot TemperatureHyperalgesiaMaleMorphineOligopeptidesRats, Long-Evans2',6'-dimethyltyrosyl-arginyl-phenylalanyl-lysinamideAcetylcysteineAnalgesics, OpioidAntioxidantsMorphineOligopeptidesReceptors, Opioid, mubifunctional μ opioid/antioxidant peptidechronic post ischemia pain (CPIP) rat modelcomplex regional pain syndrome-type I (CRPS-I)CRPS-I therapeutics[Dmt1]DALDAμ opioid-antioxidant synergy

Identifiers

PMID26352668
PMCPMC4651755
OpenAlexW2414262666

What OpenQuestion holds

Textmetadata
LicenceTDM
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.