Evidence map›Paper›PMID 27145808›Full record

ArticleJournal of neuroinflammation2016

Differential expression of P2X7 receptor and IL-1β in nociceptive and neuropathic pain.

Benjamin Luchting, Jens Heyn, Tobias Woehrle, Banafscheh Rachinger-Adam, Simone Kreth, Ludwig C Hinske, Shahnaz C Azad

Open access · goldAbstract read
In one paragraph

Article in Journal of neuroinflammation, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 4 pooled it
6.1field-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

30 citing papers in PubMed, 4 syntheses or guidelines pooled it, 54 citations in OpenAlex.

  1. Pooled it
  2. The importance of inflammatory biomarkers in non-specific acute and chronic low back pain: a systematic review.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2023
    Pooled it
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  5. Review
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  9. Role of HDAC5 Epigenetics in Chronic Craniofacial Neuropathic Pain.International journal of molecular sciences · 2024
    Review
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  18. Can FDA-Approved Immunomodulatory Drugs be Repurposed/Repositioned to Alleviate Chronic Pain?Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2021
    Review
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  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

7 authors at 2 institutions in 1 country.

Benjamin LuchtingDepartment of Anesthesiology and Pain Medicine, LMU-Munich, Marchioninistrasse 15, 81377, Munich, Germany.
Jens HeynDepartment of Anesthesiology and Pain Medicine, LMU-Munich, Marchioninistrasse 15, 81377, Munich, Germany. Jens.Heyn@med.uni-muenchen.de.
Tobias WoehrleDepartment of Anesthesiology and Pain Medicine, LMU-Munich, Marchioninistrasse 15, 81377, Munich, Germany.
Banafscheh Rachinger-AdamDepartment of Anesthesiology and Pain Medicine, LMU-Munich, Marchioninistrasse 15, 81377, Munich, Germany.
Simone KrethDepartment of Anesthesiology and Pain Medicine, LMU-Munich, Marchioninistrasse 15, 81377, Munich, Germany.
Ludwig C HinskeDepartment of Anesthesiology and Pain Medicine, LMU-Munich, Marchioninistrasse 15, 81377, Munich, Germany.
Shahnaz C AzadDepartment of Anesthesiology and Pain Medicine, LMU-Munich, Marchioninistrasse 15, 81377, Munich, Germany.
Ludwig-Maximilians-Universität München · DELMU Klinikum · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDespite substantial progress, pathogenesis and therapy of chronic pain are still the focus of many investigations. The ATP-gated P2X7 receptor (P2X7R) has previously been shown to play a central role in animal models of nociceptive inflammatory and neuropathic pain. Recently, we found that the adaptive immune system is involved in the pathophysiology of chronic nociceptive and neuropathic pain in humans. So far, data regarding P2X7R expression patterns on cells of the adaptive immune system of pain patients are scarce. We therefore analyzed the P2X7R expression on peripheral blood lymphocytes and monocytes, as well as serum levels of IL-1β in patients suffering from chronic nociceptive and neuropathic pain in comparison to healthy volunteers in order to identify individuals who might benefit from a P2X7R modulating therapy.

methodsP2X7R messenger RNA (mRNA) and protein expression were determined in patients with either chronic nociceptive low back pain (CLBP) or neuropathic pain (NeP), and in healthy volunteers by quantitative real-time PCR (qPCR) and by fluorescence-assisted cell-sorting (FACS), respectively. IL-1β serum levels were measured with a multiplex cytokine assay.

resultsCompared to healthy volunteers, P2X7R mRNA (1.6-fold, p = 0.038) and protein levels were significantly increased on monocytes (NeP: 24.6 ± 6.2, healthy volunteers: 17.0 ± 5.4; p = 0.002) and lymphocytes (NeP: 21.8 ± 6.5, healthy volunteers: 15.6 ± 5.2; p = 0.009) of patients with NeP, but not in patients with CLBP. Similarly, IL-1β serum concentrations were significantly elevated only in NeP patients (1.4-fold, p = 0.04).

conclusionsA significant upregulation of P2X7R and increased IL-1β release seems to be a particular phenomenon in patients with NeP. P2X7R inhibitors may therefore represent a potential option for the treatment of this frequently intractable type of pain. German Clinical Trial Register (DRKS): Registration Trial DRKS00005954.

Indexed as

AdultCell SeparationChronic PainFemaleFlow CytometryHumansInterleukin-1betaLow Back PainLymphocytesMaleMiddle AgedMonocytesNeuralgiaReal-Time Polymerase Chain ReactionReceptors, Purinergic P2X7Interleukin-1betaP2RX7 protein, humanReceptors, Purinergic P2X7Chronic low back painIl-1βNeuroinflammationNeuropathic painT cellsTH17Treg

Identifiers

PMID27145808
PMCPMC4857287
OpenAlexW2346848910

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.