Expression and clinical significance of miR-34a-5p in lumbar disc herniation
Journal of Orthopaedic Surgery and Research · 28 Jul 2026
† Impact is the editorial-priority score. All scores are out of 100. Clinical is a stored clinical-importance score from the earlier method; it has not been recalculated.
Why it matters
This is early-stage translational biology suggesting a possible blood biomarker and molecular pathway for disc degeneration, not yet something that changes how residents evaluate or treat LDH patients today.
The evidence
This study measured a small RNA molecule called miR-34a-5p in the blood of 112 patients with lumbar disc herniation (LDH) and 112 healthy controls, finding it was elevated in patients and correlated with worse pain (VAS), worse disability (ODI), higher disc degeneration grade (Pfirrmann), and higher inflammatory markers (TNF-alpha, IL-1beta, IL-6), while correlating negatively with functional JOA score and anti-inflammatory IL-10. In lab experiments on human nucleus pulposus cells, overexpressing this microRNA worsened inflammatory injury and reduced cell viability, an effect that was reversed by knocking it down, and the authors identified a gene called ZBTB20 as its molecular target.
A coherent primary effect estimate is unavailable. Clinical relevance does not estimate treatment benefit.
Why this rigour score?
Cross-sectional
Methods at a glance
Recorded assessment- Confounding adjustmentNot reported
- Covariate balance confirmedNot applicable
- Outcome assessors blindedNot reported
- Comparable start of follow-upNot applicable
- Adequate statistical powerNot reported
- Prospective registrationNot met
Not reported does not mean not done. Checks have different weights; this is not a count of boxes ticked.
How to read this assessment
The recorded methods are shown alongside the published score. A verified point-by-point calculation is not available for this version of the appraisal.
Checklist from the stored appraisal. “Not met” describes the recorded criterion; it does not always produce a deduction. This overview supports reading the full study.
For journal club
1.If a blood biomarker like this were validated, how might it change the threshold for recommending imaging or surgery in patients with suspected LDH?
2.Could inflammatory pathway markers such as this eventually help identify which LDH patients are more likely to fail conservative management and need earlier intervention?
Original publication title
Expression and clinical significance of miR-34a-5p in lumbar disc herniation