Evidence map›Paper›PMID 32427748›Full record

ArticlePain2020

The transition from acute to chronic pain: dynamic epigenetic reprogramming of the mouse prefrontal cortex up to 1 year after nerve injury.

Lucas Topham, Stephanie Gregoire, HyungMo Kang, Mali Salmon-Divon, Elad Lax, Magali Millecamps, Moshe Szyf, Laura S Stone

Open access · hybridAbstract read
In one paragraph

Article in Pain, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
8.2field-weighted citation impact, top 2% 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

23 citing papers in PubMed, 38 citations in OpenAlex.

  1. Trial
  2. Glial cells in neuropathic pain.Physiological reviews · 2026
    Review
  3. Review
  4. Article
  5. Review
  6. Review
  7. Mimicking opioid analgesia in cortical pain circuits.bioRxiv : the preprint server for biology · 2025
    Article
  8. Review
  9. Article
  10. Epigenetic Landscapes of Pain: DNA Methylation Dynamics in Chronic Pain.International journal of molecular sciences · 2024
    Review
  11. Article
  12. The Epigenetics of Neuropathic Pain: A Systematic Update.International journal of molecular sciences · 2023
    Review
  13. Article
  14. Review
  15. Article
  16. Article
  17. DNA Methylation and Non-Coding RNAs during Tissue-Injury Associated Pain.International journal of molecular sciences · 2022
    Review
  18. Article
  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

8 authors at 2 institutions in 2 countries.

Lucas TophamAlan Edwards Centre for Research on Pain, McGill University, Montreal, QC, Canada.
Stephanie GregoireAlan Edwards Centre for Research on Pain, McGill University, Montreal, QC, Canada.
HyungMo KangAlan Edwards Centre for Research on Pain, McGill University, Montreal, QC, Canada.
Mali Salmon-DivonDepartment of Molecular Biology, Ariel University, Ariel, Israel.
Elad LaxDepartment of Molecular Biology, Ariel University, Ariel, Israel.
Magali MillecampsAlan Edwards Centre for Research on Pain, McGill University, Montreal, QC, Canada.
Moshe SzyfDepartment of Pharmacology and Therapeutics, McGill University, Montreal, QC, Canada.
Laura S StoneAlan Edwards Centre for Research on Pain, McGill University, Montreal, QC, Canada.
McGill University · CAAriel University · IL

Funding

CIHR PJT148636
6 · The paper itself

Abstract

Chronic pain is associated with persistent structural and functional changes throughout the neuroaxis, including in the prefrontal cortex (PFC). The PFC is important in the integration of sensory, cognitive, and emotional information and in conditioned pain modulation. We previously reported widespread epigenetic reprogramming in the PFC many months after nerve injury in rodents. Epigenetic modifications, including DNA methylation, can drive changes in gene expression without modifying DNA sequences. To date, little is known about epigenetic dysregulation at the onset of acute pain or how it progresses as pain transitions from acute to chronic. We hypothesize that acute pain after injury results in rapid and persistent epigenetic remodelling in the PFC that evolves as pain becomes chronic. We further propose that understanding epigenetic remodelling will provide insights into the mechanisms driving pain-related changes in the brain. Epigenome-wide analysis was performed in the mouse PFC 1 day, 2 weeks, 6 months, and 1 year after peripheral injury using the spared nerve injury in mice. Spared nerve injury resulted in rapid and persistent changes in DNA methylation, with robust differential methylation observed between spared nerve injury and sham-operated control mice at all time points. Hundreds of differentially methylated genes were identified, including many with known function in pain. Pathway analysis revealed enrichment in genes related to stimulus response at early time points, immune function at later time points, and actin and cytoskeletal regulation throughout the time course. These results emphasize the importance of considering pain chronicity in both pain research and in treatment optimization.

Indexed as

Chronic PainPeripheral Nerve InjuriesAnimalsDNA MethylationEpigenesis, GeneticMicePrefrontal Cortex

Identifiers

PMID32427748
PMCPMC7497614
OpenAlexW3027755933

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.