Evidence map›Paper›PMID 28536865›Full record

ArticlePsychopharmacology2017

The C-2 derivatives of salvinorin A, ethoxymethyl ether Sal B and β-tetrahydropyran Sal B, have anti-cocaine properties with minimal side effects.

Amy W M Ewald, Peter J Bosch, Aimee Culverhouse, Rachel Saylor Crowley, Benjamin Neuenswander, Thomas E Prisinzano, Bronwyn M Kivell

Abstract read
In one paragraph

Article in Psychopharmacology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
–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

21 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Article
  6. Review
  7. Review
  8. Review
  9. Article
  10. A Protecting-Group-Free Synthesis of (-)-Salvinorin A.Chemistry (Weinheim an der Bergstrasse, Germany) · 2021
    Article
  11. Review
  12. Article
  13. Review
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  15. Strategies for DevelopingThe Journal of pharmacology and experimental therapeutics · 2020
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. A single, extinction-based treatment with a kappa opioid receptor agonist elicits a long-term reduction in cocaine relapse.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2018
    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

7 authors.

Amy W M EwaldSchool of Biological Sciences, Centre for Biodiscovery, Victoria University of Wellington, Wellington, New Zealand.
Peter J BoschSchool of Biological Sciences, Centre for Biodiscovery, Victoria University of Wellington, Wellington, New Zealand.
Aimee CulverhouseSchool of Biological Sciences, Centre for Biodiscovery, Victoria University of Wellington, Wellington, New Zealand.
Rachel Saylor CrowleyDepartment of Medicinal Chemistry, School of Pharmacy, University of Kansas, Lawrence, KS, USA.
Benjamin NeuenswanderDepartment of Medicinal Chemistry, School of Pharmacy, University of Kansas, Lawrence, KS, USA.
Thomas E PrisinzanoDepartment of Medicinal Chemistry, School of Pharmacy, University of Kansas, Lawrence, KS, USA.
Bronwyn M KivellSchool of Biological Sciences, Centre for Biodiscovery, Victoria University of Wellington, Wellington, New Zealand. Bronwyn.kivell@vuw.ac.nz.

Funding

Investigation of Neoclerodanes as Novel Opioid LigandsR01DA018151 · NIDA · UNIVERSITY OF KENTUCKY · PI PRISINZANO, THOMAS EDWARD · 2005 to 2020
$5.7M
TRAINING GRANT IN DYNAMIC ASPECTS OF CHEMICAL BIOLOGYT32GM008545 · NIGMS · UNIVERSITY OF KANSAS LAWRENCE · PI LAMB, AUDREY L · 1994 to 2019
$4.9M
NIDA NIH HHS R01 DA018151NIGMS NIH HHS T32 GM008545
6 · The paper itself

Abstract

rationaleKappa-opioid receptor (KOPr) agonists have pre-clinical anti-cocaine and analgesic effects. However, side effects including sedation, dysphoria, aversion, anxiety and depression limit their therapeutic development. The unique structure of salvinorin A has been used to develop longer acting KOPr agonists.

objectivesWe evaluate two novel C-2 analogues of salvinorin A, ethoxymethyl ether Sal B (EOM Sal B) and β-tetrahydropyran Sal B (β-THP Sal B) alongside U50,488 for their ability to modulate cocaine-induced behaviours and side effects, pre-clinically.

methodsAnti-cocaine properties of EOM Sal B were evaluated using the reinstatement model of drug seeking in self-administering rats. EOM Sal B and β-THP Sal B were evaluated for effects on cocaine-induced hyperactivity, spontaneous locomotor activity and sucrose self-administration. EOM Sal B and β-THP Sal B were evaluated for aversive, anxiogenic and depressive-like effects using conditioned place aversion (CPA), elevated plus maze (EPM) and forced swim tests (FSTs), respectively.

resultsEOM Sal B (0.1, 0.3 mg/kg, intraperitoneally (i.p.)) dose dependently attenuated drug seeking, and EOM Sal B (0.1 mg/kg, i.p.) and β-THP Sal B (1 mg/kg, i.p.) attenuated cocaine-induced hyperactivity. No effects on locomotor activity, open arm times (EPM) or swimming behaviours (FST) were seen with EOM (0.1 or 0.3 mg/kg, i.p.) or β-THP Sal B (1 or 2 mg/kg, i.p.). However, β-THP Sal B decreased time spent in the drug-paired chamber.

conclusionEOM Sal B is more potent than Sal A and β-THP Sal B in reducing drug-seeking behaviour with fewer side effects. EOM Sal B showed no effects on sucrose self-administration (0.1 mg/kg), locomotor, depressive-like, aversive-like or anxiolytic effects.

Indexed as

AnimalsAnxietyAvoidance LearningCocaineCocaine-Related DisordersDiterpenes, ClerodaneDrug-Seeking BehaviorMaleMotor ActivityRatsRats, Sprague-DawleySelf AdministrationSwimmingCocaineDiterpenes, Clerodanesalvinorin B ethoxymethyl etherAnxiolyticBehavioural PharmacologyCocaineConditioned place aversionDrug seekingElevated plus mazeForced swim testRatSalvinorin ASelf-administrationSucrose self-administration

Identifiers

PMID28536865
PMCPMC5542847

What OpenQuestion holds

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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.