Evidence map›Paper›PMID 33155161›Full record

ArticleLasers in medical science2021

Effects of photobiomodulation therapy on neuropathic pain in rats: evaluation of nociceptive mediators and infrared thermography.

Mara Evany de Oliveira, Joyce Teixeira Da Silva, Marcos Leal Brioschi, Marucia Chacur

Abstract read
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In one paragraph

Article in Lasers in medical science, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 2 pooled it
1.2field-weighted citation impact, top 17% 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

18 citing papers in PubMed, 2 syntheses or guidelines pooled it, 28 citations in OpenAlex.

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  17. Effects of systemic vascular photobiomodulation using LED or laser on sensory-motor recovery following a peripheral nerve injury in Wistar rats.Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology · 2023
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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 4 institutions in 2 countries.

Mara Evany de OliveiraLaboratório de Neuroanatomia Funcional da dor, Departamento de Anatomia, Instituto de Ciências Biomedicas, Universidade de São Paulo, Av. Prof. Lineu Prestes, 2415, São Paulo, SP, 05508-900, Brazil.
Joyce Teixeira Da SilvaDepartment of Neural and Pain Sciences, University of Maryland Baltimore, Baltimore, MD, USA.
Marcos Leal BrioschiDivisao de Neurologia, Hospital das Clinicas, Escola de Medicina, Universidade de São Paulo, São Paulo, Brazil.
Marucia ChacurLaboratório de Neuroanatomia Funcional da dor, Departamento de Anatomia, Instituto de Ciências Biomedicas, Universidade de São Paulo, Av. Prof. Lineu Prestes, 2415, São Paulo, SP, 05508-900, Brazil. chacurm@icb.usp.br.ORCID https://orcid.org/0000-0002-0172-4110
Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo · BRUniversidade de Brasília · BRUniversidade de São Paulo · BRUniversity of Maryland, Baltimore · US

Funding

FAPESP 2010/20026-6FAPESP 2012/05840-4FAPESP 2013/01274-7
6 · The paper itself

Abstract

Nerve injury induces release of peptides and upregulation of receptors such as substance P and transient receptor potential receptor V1 (TRPV1), which contribute to the development and maintenance of chronic pain. Photobiomodulation therapy (PBMT) is a nonpharmacological strategy that promotes tissue repair and reduces pain and inflammation. However, the molecular basis for PBMT effects on neuropathic pain is still unclear. We investigated the effects of PBMT on substance P, TRPV1, and superficial temperature change in a rodent model of neuropathic pain. We evaluated substance P and TRPV1 in dorsal root ganglia (DRG L4 to L6) at baseline, 14 days after chronic constriction injury (CCI) and after PBMT. We also assessed the superficial temperature of tarsal, metatarsal, tibia, and fibula regions before and after PBMT using infrared thermography. Substance P and TRPV1 levels increased in DRG of CCI rats compared to naive and sham rats and decreased after PBMT. Infrared thermography showed increased temperature of tarsal, metatarsal, tibia, and fibula regions in CCI rats, which was decreased after PBMT. There were no statistical differences between CCI rats with PBMT, sham, and naive rats in any assay. PBMT reduces nociceptive mediators and hind paw and leg's temperature in a rodent model of neuropathic pain, suggesting that PBMT may play a modulatory role in thermoregulation, neurogenic inflammation, and thermal sensitivity in peripheral nerve injuries. Therefore, PBMT appears to be a valuable strategy for neuropathic pain treatment in clinical settings.

Indexed as

Low-Level Light TherapyNeuralgiaAnimalsGanglia, SpinalHyperalgesiaNociceptionRatsRats, Sprague-DawleyThermographyDorsal root gangliaNeuropathic painPhotobiomodulationSubstance PThermographyTRPV1

Identifiers

PMID33155161
OpenAlexW3096045143

What OpenQuestion holds

Textmetadata
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.