Evidence map›Paper›PMID 39542877›Full record

ArticleEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2025

"Elucidating the immunomodulatory role of endocannabinoids in intervertebral disc degeneration".

Gowdaman Vasudevan, Karthik Ramachandran, Chitraa Tangavel, Sharon Miracle Nayagam, Chellappa Gopalakrishnan, Raveendran Muthurajan, K S Sri Vijay Anand, Shanmuganathan Rajasekaran

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In one paragraph

Article in 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, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. Review
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

8 authors.

Gowdaman VasudevanGanga Research Centre, SF No.442, NGGO Colony Post, Vattamalaipalayam, Coimbatore, TamilNadu, 641022, India.ORCID 0000-0002-9499-5269
Karthik RamachandranDepartment of Spine Surgery, Ganga Hospital, 313, Mettupalayam Road, Coimbatore, India.ORCID 0000-0001-8194-4721
Chitraa TangavelGanga Research Centre, SF No.442, NGGO Colony Post, Vattamalaipalayam, Coimbatore, TamilNadu, 641022, India.ORCID 0000-0002-5905-9619
Sharon Miracle NayagamGanga Research Centre, SF No.442, NGGO Colony Post, Vattamalaipalayam, Coimbatore, TamilNadu, 641022, India.ORCID 0000-0002-0812-4468
Chellappa GopalakrishnanGanga Research Centre, SF No.442, NGGO Colony Post, Vattamalaipalayam, Coimbatore, TamilNadu, 641022, India.
Raveendran MuthurajanDepartment of Plant Biotechnology, Tamil Nadu Agricultural University, Lawley Road, Coimbatore, India.ORCID 0000-0002-8803-7662
K S Sri Vijay AnandDepartment of Spine Surgery, Ganga Hospital, 313, Mettupalayam Road, Coimbatore, India.ORCID 0000-0002-8885-5411
Shanmuganathan RajasekaranDepartment of Spine Surgery, Ganga Hospital, 313, Mettupalayam Road, Coimbatore, India. rajasekaran.orth@gmail.com.ORCID 0000-0001-6043-006X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe endocannabinoid system (ECS) has been well-established to play a crucial role in the regulation of several physiological processes as well as many inflammatory disease conditions. However, its role in intervertebral disc degeneration has been least explored. We aim to investigate the immunomodulatory role of endocannabinoids in regulating IVD health.

methodsThe study population included 20 healthy volunteers (controls) and 40 patients with disc degeneration (disease group) (20 Modic and 20 Non Modic). 16S metagenome sequencing of the V3-V4 region was performed for the DNA extracted from NP tissue samples of both control and disease groups. Sequencing was carried out using the Novaseq 6000 platform using 250 bp paired-end chemistry. A global metabolic profile was obtained using the uHPLC system coupled with Q Exactive Plus Hybrid Quadrupole-Orbitrap mass spectrometer.

resultsOur study revealed a higher prevalence of gram-negative bacteria, particularly opportunistic pathogens like Pseudomonas, in diseased discs (71-81%) compared to healthy controls (54%). Further investigation using metabolomics identified significant changes in the lipid profiles of diseased discs. We found that the signalling molecules of the ECS, 2-arachidonylglycerol (2-AG) and N-arachidonoylethanolamine (AEA), were significantly lower in diseased discs compared to controls (Log2FC -2.62 for 2-AG and  -3.15 for AEA). Conversely, pro-inflammatory metabolites like LTA4, HPETE, HETE, and Prostaglandin G2 were elevated in diseased discs, with a Log2 fold increase greater than 2.5.

conclusionThe study reveals that the endocannabinoid metabolites (2-AG and AEA) of the ECS could be a significant molecule influencing susceptibility to infection and inflammation within the intervertebral discs, which could be a potential target for improving disc health. LEVEL OF EVIDENCE: Diagnostic: individual cross-sectional studies with consistently applied reference standard and blinding.

Indexed as

EndocannabinoidsIntervertebral DiscIntervertebral Disc DegenerationAdultArachidonic AcidsCase-Control StudiesFemaleGlyceridesHumansMaleMiddle AgedArachidonic AcidsEndocannabinoidsGlyceridesglyceryl 2-arachidonate2-ArachidonylglycerolEndocannabinoidsMetabolomeMetagenomeN-arachidonoylethanolamineSignalling lipids

Identifiers

What Socratic holds

Textmetadata
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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 Socratic graph.