Evidence map›Paper›PMID 31047862›Full record

ArticleEBioMedicine2019

Interleukin-8 as a therapeutic target for chronic low back pain: Upregulation in human cerebrospinal fluid and pre-clinical validation with chronic reparixin in the SPARC-null mouse model.

Emerson Krock, Magali Millecamps, Kathleen M Anderson, Akanksha Srivastava, Troy E Reihsen, Pawan Hari, Yue Ran Sun, Seon Ho Jang, George L Wilcox, Kumar G Belani and 6 more

Open access · goldAbstract read
In one paragraph

Article in EBioMedicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 1 pooled it
4.9field-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

46 citing papers in PubMed, 1 synthesis or guideline pooled it, 77 citations in OpenAlex.

  1. Pooled it
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  14. Chemokines and Their Association With Symptom Severity in Women With Endometriosis.American journal of reproductive immunology (New York, N.Y. : 1989) · 2025
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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

16 authors at 5 institutions in 2 countries.

Emerson KrockAlan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec H3A 0G1, Canada; McGill Scoliosis and Spine Research Group, McGill University, Montreal, Quebec H3A 1G1, Canada; Faculty of Medicine, Department of Surgery, Orthopaedic Research Lab, McGill University, Montreal, Quebec H3A 1G1, Canada. Electronic address: emerson.krock@ki.se.
Magali MillecampsAlan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec H3A 0G1, Canada; McGill Scoliosis and Spine Research Group, McGill University, Montreal, Quebec H3A 1G1, Canada; Faculty of Dentistry, McGill University, Montreal, Quebec H3A 1G1, Canada. Electronic address: magali.millecamps@mcgill.ca.
Kathleen M AndersonDivision of Physical Therapy, Department of Rehabilitation Medicine, University of Minnesota, Minneapolis, MN 55455, USA. Electronic address: ander646@umn.edu.
Akanksha SrivastavaAlan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec H3A 0G1, Canada; Faculty of Dentistry, McGill University, Montreal, Quebec H3A 1G1, Canada. Electronic address: akanksha.srivastava@mail.mcgill.ca.
Troy E ReihsenDepartment of Anesthesiology, University of Minnesota, Minneapolis, MN 55455, USA. Electronic address: treihsen@uw.edu.
Pawan HariDepartment of Epidemiology, University of Minnesota, Minneapolis, MN 55455, USA. Electronic address: pawan.Hari@nyumc.org.
Yue Ran SunAlan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec H3A 0G1, Canada; Faculty of Dentistry, McGill University, Montreal, Quebec H3A 1G1, Canada. Electronic address: yue.ran.sun@mail.mcgill.ca.
Seon Ho JangAlan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec H3A 0G1, Canada; Faculty of Dentistry, McGill University, Montreal, Quebec H3A 1G1, Canada. Electronic address: seonho.jang@mail.mcgill.ca.
George L WilcoxDepartment of Neuroscience, University of Minnesota, Minneapolis, MN 55455, USA. Electronic address: George@umn.edu.
Kumar G BelaniDepartment of Anesthesiology, University of Minnesota, Minneapolis, MN 55455, USA. Electronic address: belan001@umn.edu.
David S BeebeDepartment of Anesthesiology, University of Minnesota, Minneapolis, MN 55455, USA. Electronic address: beebe001@umn.edu.
Jean OuelletAlan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec H3A 0G1, Canada; McGill Scoliosis and Spine Research Group, McGill University, Montreal, Quebec H3A 1G1, Canada; Faculty of Medicine, Department of Surgery, Orthopaedic Research Lab, McGill University, Montreal, Quebec H3A 1G1, Canada; Shriner's Hospital for Children, 1003 Decarie Blvd, Montreal, Quebec H4A 0A9, Canada.
Manuel R PintoTwin Cities Spine Center, Minneapolis, MN 55404, USA. Electronic address: mrpinto@tcspine.com.
Lois J KehlMinnesota Head & Neck Pain Clinic, St. Paul, MN 55114, USA. Electronic address: kehlx001@umn.edu.
Lisbet HaglundMcGill Scoliosis and Spine Research Group, McGill University, Montreal, Quebec H3A 1G1, Canada; Faculty of Medicine, Department of Surgery, Orthopaedic Research Lab, McGill University, Montreal, Quebec H3A 1G1, Canada; Shriner's Hospital for Children, 1003 Decarie Blvd, Montreal, Quebec H4A 0A9, Canada. Electronic address: lisbet.haglund@mcgill.ca.
Laura S StoneAlan Edwards Centre for Research on Pain, McGill University, Montreal, Quebec H3A 0G1, Canada; McGill Scoliosis and Spine Research Group, McGill University, Montreal, Quebec H3A 1G1, Canada; Faculty of Dentistry, McGill University, Montreal, Quebec H3A 1G1, Canada; Faculty of Medicine, Anesthesia Research Unit, Montreal, Montreal, Quebec H3A 1G1, Canada; Faculty of Medicine, Department of Pharmacology and Therapeutics, Montreal, Quebec H3A 1G1, Canada. Electronic address: laura.s.stone@mcgill.ca.
McGill University · CAUniversity of Minnesota · USMontreal Children's Hospital · CAChildren’s Minnesota - St. Paul Hospital · USTwin Cities Spine Center · US

Funding

Proteomic Studies of Human Chronic PainR21DA020108 · NIDA · UNIVERSITY OF MINNESOTA · PI KEHL, LOIS · 2006 to 2007
$390k
NIDA NIH HHS R21 DA020108
6 · The paper itself

Abstract

backgroundLow back pain (LBP) is the leading global cause of disability and is associated with intervertebral disc degeneration (DD) in some individuals. However, many adults have DD without LBP. Understanding why DD is painful in some and not others may unmask novel therapies for chronic LBP. The objectives of this study were to a) identify factors in human cerebrospinal fluid (CSF) associated with chronic LBP and b) examine their therapeutic utility in a proof-of-concept pre-clinical study.

methodsPain-free human subjects without DD, pain-free human subjects with DD, and patients with chronic LBP linked to DD were recruited and lumbar MRIs, pain and disability levels were obtained. CSF was collected and analyzed by multiplex cytokine assay. Interleukin-8 (IL-8) expression was confirmed by ELISA in CSF and in intervertebral discs. The SPARC-null mouse model of progressive, age-dependent DD and chronic LBP was used for pre-clinical validation. Male SPARC-null and control mice received systemic Reparixin, a CXCR1/2 (receptors for IL-8 and murine analogues) inhibitor, for 8 weeks. Behavioral signs of axial discomfort and radiating pain were assessed. Following completion of the study, discs were excised and cultured, and conditioned media was evaluated with a protein array.

findingsIL-8 was elevated in CSF of chronic LBP patients with DD compared to pain-free subjects with or without DD. Chronic inhibition with reparixin alleviated low back pain behaviors and attenuated disc inflammation in SPARC-null mice.

interpretationThese studies suggest that the IL-8 signaling pathway is a viable therapy for chronic LBP. FUND: Supported by NIH, MMF, CIHR and FRQS.

Indexed as

AdultAnimalsCytokinesDisease Models, AnimalDrug Evaluation, PreclinicalFemaleHumansInterleukin-8Intervertebral Disc DegenerationLow Back PainMagnetic Resonance ImagingMaleMiceMice, KnockoutMiddle AgedOsteonectinCytokinesInterleukin-8OsteonectinreparixinSPARC protein, mouseSulfonamidesCerebrospinal fluidCXCL1CXCL5CXCR1/2Intervertebral disc degenerationReparixin

Identifiers

PMID31047862
PMCPMC6558025
OpenAlexW2942513581

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.