Evidence map›Paper›PMID 34331199›Full record

ArticleMolecular neurobiology2021

Spared Nerve Injury Causes Sexually Dimorphic Mechanical Allodynia and Differential Gene Expression in Spinal Cords and Dorsal Root Ganglia in Rats.

F H G Ahlström, K Mätlik, H Viisanen, K J Blomqvist, X Liu, T O Lilius, Y Sidorova, E A Kalso, P V Rauhala

Open access · hybridAbstract read
In one paragraph

Article in Molecular neurobiology, 2021. 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
4.4field-weighted citation impact, top 4% 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, 43 citations in OpenAlex.

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  11. Neuropathic pain; what we know and what we should do about it.Frontiers in pain research (Lausanne, Switzerland) · 2023
    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

9 authors at 2 institutions in 2 countries.

F H G AhlströmDepartment of Pharmacology, Faculty of Medicine, University of Helsinki, Haartmaninkatu 8 (Biomedicum 1), 00014, Helsinki, Finland. fredrik.ahlstrom@helsinki.fi.ORCID http://orcid.org/0000-0002-4120-8647
K MätlikDepartment of Pharmacology, Faculty of Medicine, University of Helsinki, Haartmaninkatu 8 (Biomedicum 1), 00014, Helsinki, Finland.
H ViisanenDepartment of Pharmacology, Faculty of Medicine, University of Helsinki, Haartmaninkatu 8 (Biomedicum 1), 00014, Helsinki, Finland.
K J BlomqvistDepartment of Pharmacology, Faculty of Medicine, University of Helsinki, Haartmaninkatu 8 (Biomedicum 1), 00014, Helsinki, Finland.
X LiuSystems Biology/Pathology Research Group and Proteomics Unit, Institute of Biotechnology, HiLIFE, University of Helsinki, 00014, Helsinki, Finland.
T O LiliusDepartment of Pharmacology, Faculty of Medicine, University of Helsinki, Haartmaninkatu 8 (Biomedicum 1), 00014, Helsinki, Finland.
Y SidorovaLaboratory of Molecular Neuroscience, Institute of Biotechnology, HiLIFE, University of Helsinki, Viikinkaari 5D, 00014, Helsinki, Finland.
E A KalsoDepartment of Pharmacology, Faculty of Medicine, University of Helsinki, Haartmaninkatu 8 (Biomedicum 1), 00014, Helsinki, Finland.
P V RauhalaDepartment of Pharmacology, Faculty of Medicine, University of Helsinki, Haartmaninkatu 8 (Biomedicum 1), 00014, Helsinki, Finland.
University of Helsinki · FIUniversity of Copenhagen · DK

Funding

H2020 Marie Skłodowska-Curie Actions 798944Seventh Framework Programme FP7/2007-2013
6 · The paper itself

Abstract

Neuropathic pain is more prevalent in women. However, females are under-represented in animal experiments, and the mechanisms of sex differences remain inadequately understood. We used the spared nerve injury (SNI) model in rats to characterize sex differences in pain behaviour, unbiased RNA-Seq and proteomics to study the mechanisms. Male and female rats were subjected to SNI- and sham-surgery. Mechanical and cold allodynia were assessed. Ipsilateral lumbar dorsal root ganglia (DRG) and spinal cord (SC) segments were collected for RNA-seq analysis with DESeq2 on Day 7. Cerebrospinal fluid (CSF) samples for proteomic analysis and DRGs and SCs for analysis of IB-4 and CGRP, and IBA1 and GFAP, respectively, were collected on Day 21. Females developed stronger mechanical allodynia. There were no differences between the sexes in CGRP and IB-4 in the DRG or glial cell markers in the SC. No CSF protein showed change following SNI. DRG and SC showed abundant changes in gene expression. Sexually dimorphic responses were found in genes related to T-cells (cd28, ctla4, cd274, cd4, prf1), other immunological responses (dpp4, c5a, cxcr2 and il1b), neuronal transmission (hrh3, thbs4, chrna4 and pdyn), plasticity (atf3, c1qc and reg3b), and others (bhlhe22, mcpt1l, trpv6). We observed significantly stronger mechanical allodynia in females and numerous sexually dimorphic changes in gene expression following SNI in rats. Several genes have previously been linked to NP, while some are novel. Our results suggest gene targets for further studies in the development of new, possibly sex-specific, therapies for NP.

Indexed as

Sex DifferentiationAnimalsCalcitonin Gene-Related PeptideCalcium-Binding ProteinsFemaleGanglia, SpinalGene ExpressionGlial Fibrillary Acidic ProteinHyperalgesiaMaleMicrofilament ProteinsPain MeasurementProteomicsRatsRats, Sprague-DawleySciatic NeuropathyAif1 protein, ratCalcitonin Gene-Related PeptideCalcium-Binding ProteinsGfap protein, ratGlial Fibrillary Acidic ProteinMicrofilament ProteinsBehaviourNeuropathic painProteomicsRatSex-differencesTranscriptomics

Identifiers

PMID34331199
PMCPMC8497331
OpenAlexW3047765554

What OpenQuestion holds

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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.