Evidence map›Paper›PMID 35993087›Full record

ReviewFrontiers in systems neuroscience2022

The role of enkephalinergic systems in substance use disorders.

Lauren G Rysztak, Emily M Jutkiewicz

Open access · goldAbstract readReview
In one paragraph

Review in Frontiers in systems neuroscience, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

20 citing papers in PubMed, 24 citations in OpenAlex.

  1. Article
  2. Dorsal raphe nucleus enkephalin peptide modulates behavioral preference.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
    Article
  3. Review
  4. Article
  5. Article
  6. A Drd1-cre mouse line with nucleus accumbens gene dysregulation exhibits blunted fentanyl seeking.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2025
    Article
  7. Article
  8. Review
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Evaluation ofMediators of inflammation · 2024
    Article
  18. Article
  19. Review
  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

2 authors at 1 institution in 1 country.

Lauren G RysztakDepartment of Pharmacology, University of Michigan, Ann Arbor, MI, United States.
Emily M JutkiewiczDepartment of Pharmacology, University of Michigan, Ann Arbor, MI, United States.
University of Michigan–Ann Arbor · US

Funding

POSTDOCTORAL TRAINING IN THE BIOLOGY OF DRUG ABUSET32DA007268 · NIDA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI TRAYNOR, JOHN R. · 1991 to 2021
$6.7M
Endogenous enkephalins and reward mechanismsR01DA042092 · NIDA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI JUTKIEWICZ, EMILY M · 2017 to 2021
$1.6M
Opioidergic mechanisms underlying cocaine conditioned reinforcementF31DA053697 · NIDA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI RYSZTAK, LAUREN GRACE · 2021 to 2023
$97k
NIDA NIH HHS F31 DA053697NIDA NIH HHS R01 DA042092NIDA NIH HHS T32 DA007268
6 · The paper itself

Abstract

Enkephalin, an endogenous opioid peptide, is highly expressed in the reward pathway and may modulate neurotransmission to regulate reward-related behaviors, such as drug-taking and drug-seeking behaviors. Drugs of abuse also directly increase enkephalin in this pathway, yet it is unknown whether or not changes in the enkephalinergic system after drug administration mediate any specific behaviors. The use of animal models of substance use disorders (SUDs) concurrently with pharmacological, genetic, and molecular tools has allowed researchers to directly investigate the role of enkephalin in promoting these behaviors. In this review, we explore neurochemical mechanisms by which enkephalin levels and enkephalin-mediated signaling are altered by drug administration and interrogate the contribution of enkephalin systems to SUDs. Studies manipulating the receptors that enkephalin targets (e.g., mu and delta opioid receptors mainly) implicate the endogenous opioid peptide in drug-induced neuroadaptations and reward-related behaviors; however, further studies will need to confirm the role of enkephalin directly. Overall, these findings suggest that the enkephalinergic system is involved in multiple aspects of SUDs, such as the primary reinforcing properties of drugs, conditioned reinforcing effects, and sensitization. The idea of dopaminergic-opioidergic interactions in these behaviors remains relatively novel and warrants further research. Continuing work to elucidate the role of enkephalin in mediating neurotransmission in reward circuitry driving behaviors related to SUDs remains crucial.

Indexed as

circuitryenkephalinopioidrewardsubstance use disorder

Identifiers

PMID35993087
PMCPMC9391026
OpenAlexW4289939889

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.