Evidence map›Paper›PMID 26376854›Full record

ArticleMolecular pain2015

Sympathetic fibre sprouting in the skin contributes to pain-related behaviour in spared nerve injury and cuff models of neuropathic pain.

Francisney P Nascimento, Claire Magnussen, Noosha Yousefpour, Alfredo Ribeiro-da-Silva

Open access · goldAbstract read
In one paragraph

Article in Molecular pain, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
3.0field-weighted citation impact, top 9% 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

27 citing papers in PubMed, 43 citations in OpenAlex.

  1. Article
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  6. Skin Reinnervation by Collateral Sprouting Following Spared Nerve Injury in Mice.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  7. Article
  8. Article
  9. Review
  10. Peripheral mechanisms of chronic pain.Medical review (2021) · 2022
    Review
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  13. Review
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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

4 authors at 1 institution in 1 country.

Francisney P NascimentoDepartment of Pharmacology and Therapeutics, McGill University, McIntyre Medical Building, 3655 Promenade Sir William Osler, Room 1215, Montreal, QC, H3G 1Y6, Canada. ney.pintodonascimento@gmail.com.
Claire MagnussenDepartment of Pharmacology and Therapeutics, McGill University, McIntyre Medical Building, 3655 Promenade Sir William Osler, Room 1215, Montreal, QC, H3G 1Y6, Canada. claire.magnussen@mail.mcgill.ca.
Noosha YousefpourDepartment of Pharmacology and Therapeutics, McGill University, McIntyre Medical Building, 3655 Promenade Sir William Osler, Room 1215, Montreal, QC, H3G 1Y6, Canada. noosha.yousefpour@mail.mcgill.ca.
Alfredo Ribeiro-da-SilvaDepartment of Pharmacology and Therapeutics, McGill University, McIntyre Medical Building, 3655 Promenade Sir William Osler, Room 1215, Montreal, QC, H3G 1Y6, Canada. alfredo.ribeirodasilva@mcgill.ca.
McGill University · CA

Funding

Canadian Institutes of Health Research MOP-79411
6 · The paper itself

Abstract

backgroundCuff and spared nerve injury (SNI) in the sciatic territory are widely used to model neuropathic pain. Because nociceptive information is first detected in skin, it is important to understand how alterations in peripheral innervation contribute to pain in each model. Over 16 weeks in male rats, changes in sensory and autonomic innervation of the skin were described after cuff and SNI using immunohistochemistry to label myelinated (neurofilament 200 positive-NF200+) and peptidergic (calcitonin gene-related peptide positive-CGRP+) primary afferents and sympathetic fibres (dopamine β-hydroxylase positive-DBH+)

resultsCuff and SNI caused an early loss and later reinnervation of NF200 and CGRP fibres in the plantar hind paw skin. In both models, DBH+ fibres sprouted into the upper dermis of the plantar skin 4 and 6 weeks after injury. Despite these similarities, behavioural pain measures were significantly different in each model. Sympathectomy using guanethidine significantly alleviated mechanical allodynia 6 weeks after cuff, when peak sympathetic sprouting was observed, having no effect at 2 weeks, when fibres were absent. In SNI animals, mechanical allodynia in the lateral paw was significantly improved by guanethidine at 2 and 6 weeks, and the development of cold hyperalgesia, which roughly paralleled the appearance of ectopic sympathetic fibres, was alleviated by guanethidine at 6 weeks. Sympathetic fibres did not sprout into the dorsal root ganglia at 2 or 6 weeks, indicating their unimportance to pain behaviour in these two models.

conclusionsAlterations in sympathetic innervation in the skin represents an important mechanism that contributes to pain in cuff and SNI models of neuropathic pain.

Indexed as

Adrenergic FibersAnimalsBehavior, AnimalCalcitonin Gene-Related PeptideCold TemperatureDermisDisease Models, AnimalDopamine beta-HydroxylaseGanglia, SpinalGuanethidineHyperalgesiaMaleNeuralgiaRats, Sprague-DawleySciatic NerveSkinCalcitonin Gene-Related PeptideDopamine beta-HydroxylaseGuanethidine

Identifiers

PMID26376854
PMCPMC4574171
OpenAlexW2170961954

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Registered trials

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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.