Evidence map›Paper›PMID 32701850›Full record

ArticlePain2020

Localized sympathectomy reduces peripheral nerve regeneration and pain behaviors in 2 rat neuropathic pain models.

Wenrui Xie, Judith A Strong, Jun-Ming Zhang

Open access · greenAbstract 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 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.2field-weighted citation impact, top 12% 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

19 citing papers in PubMed, 28 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Emerging role of macrophages in neuropathic pain.Journal of orthopaedic translation · 2025
    Review
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Peripheral mechanisms of chronic pain.Medical review (2021) · 2022
    Review
  16. Article
  17. Article
  18. Article
  19. 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

3 authors at 1 institution in 1 country.

Wenrui XieDepartment of Anesthesiology, Pain Research Center, University of Cincinnati College of Medicine, Cincinnati, OH, United States.
Judith A Strong
Jun-Ming Zhang
University of Cincinnati Medical Center · US

Funding

STUDY OF ACTIVITY-DEPENDENT SYMPATHETIC SPROUTINGR01NS045594 · NINDS · UNIVERSITY OF CINCINNATI · PI ZHANG, JUN-MING · 2004 to 2025
$8.6M
NEURAL AND CHEMICAL BASIS OF PATHOLOGIC PAINR01NS055860 · NINDS · UNIVERSITY OF CINCINNATI · PI ZHANG, JUN-MING · 2008 to 2017
$3.7M
Sympathetic-mediated sensory neuron cluster firing as a novel therapeutic target for neuropathic painRF1NS113883 · NINDS · JOHNS HOPKINS UNIVERSITY · PI DONG, XINZHONG, ZHANG, JUN-MING · 2019 to 2019
$3.1M
Steroids and Steroid Receptors in Low Back PainR01AR068989 · NIAMS · UNIVERSITY OF CINCINNATI · PI ZHANG, JUN-MING · 2016 to 2020
$1.7M
NIAMS NIH HHS R01 AR068989NINDS NIH HHS R01 NS045594NINDS NIH HHS R01 NS055860NINDS NIH HHS RF1 NS113883
6 · The paper itself

Abstract

Previous studies have shown that the peripheral nerve regeneration process is linked to pain in several neuropathic pain models. Other studies show that sympathetic blockade may relieve pain in some pain models and clinical conditions. This study examined reduction in peripheral nerve regeneration as one possible mechanism for relief of neuropathic pain by sympathetic blockade. A "microsympathectomy," consisting of cutting the gray rami containing sympathetic postganglionic axons where they enter the L4 and L5 spinal nerves, reduced mechanical hypersensitivity in 2 different rat neuropathic pain models. In the spinal nerve ligation model, in which some functional regeneration and reinnervation of the ligated spinal nerve can be observed, microsympathectomy reduced functional and anatomical measures of regeneration as well as expression of growth-associated protein 43 (GAP43), a regeneration-related protein. In the spared nerve injury model, in which functional reinnervation is not possible and the futile regeneration process results in formation of a neuroma, microsympathectomy reduced neuroma formation and GAP43 expression. In both models, microsympathectomy reduced macrophage density in the sensory ganglia and peripheral nerve. This corroborates previous work showing that sympathetic nerves may locally affect immune function. The results further highlight the challenge of improving pain in neuropathic conditions without inhibiting peripheral nerve regeneration that might otherwise be possible and desired.

Indexed as

Peripheral Nerve InjuriesSympathectomyAnimalsDisease Models, AnimalFemaleGanglia, SpinalMaleNerve RegenerationNeuralgiaPeripheral NervesRatsRats, Sprague-DawleySpinal Nerves

Identifiers

PMID32701850
PMCPMC7572566
OpenAlexW3019450716

What OpenQuestion holds

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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.