ArticleJournal of orthopaedic surgery and research2025
Expression of MMP1, MMP3, and TIMP1 in intervertebral discs under simulated overload and microgravity conditions.
Article in Journal of orthopaedic surgery and research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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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.
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Who cites it
5 citing papers in PubMed.
- Targeting AMPK signaling in nucleus pulposus cells ameliorates spaceflight microgravity-induced intervertebral disc degeneration.Cell death and differentiation · 2026Article
- Evolving Landscape of Regenerative Therapies: Cell-Based and Cell-Free Approaches for Chronic Low Back Pain.Journal of clinical medicine · 2026Review
- Role of Exosomes from Nucleus Pulposus Cells in Attenuating Intervertebral Disc Degeneration by Inhibiting Nucleus Pulposus Cell Apoptosis via the miR-8485/GSK-3β/Wnt/β-catenin Signaling Axis.Current molecular medicine · 2026Article
- The Biomechanical Landscape of Lumbar Disc Herniation: Mechanobiological Insights Into Injury and Regeneration.Neurospine · 2026Review
- Deciphering the regulatory mechanism and therapeutic potential of ECM degradation in intervertebral disc degeneration via multi-omics integration.Frontiers in immunology · 2026Article
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
objectiveThis study aims to investigate changes in matrix metalloproteinase (MMP) and tissue inhibitor of metalloproteinase (TIMP) levels in the intervertebral discs of New Zealand white rabbits under simulated overload and microgravity conditions, focusing on the expression of MMP1, MMP3, and TIMP1. The findings aim to provide a theoretical foundation for preventing and delaying lumbar disc degeneration in these environments.
methodsOverload was simulated using an animal centrifuge, and microgravity was mimicked through tail suspension. A randomized single-blind method was applied to divide 120 age- and weight-matched New Zealand white rabbits into six groups: control groups (30 d, 60 d, 90 d) and overload/microgravity groups (30 d, 60 d, 90 d), with 20 rabbits per group. The expression of MMP1, MMP3, and TIMP1 in the lumbar intervertebral discs was measured and analyzed using statistical methods, including chi-square tests and t-tests, across different exposure times.
resultsIn the experimental groups, MMP1 and MMP3 expression levels were significantly higher than those in the corresponding control groups at all time points (P < 0.01). MMP1 and MMP3 levels progressively increased with longer exposure durations, showing statistically significant differences (P < 0.01). TIMP1 expression was significantly higher in the 30-day and 60-day experimental groups than in the control group (P < 0.01), but decreased in the 90-day group, indicating a late-stage imbalance in the MMP/TIMP1 ratio.
conclusionSimulated overload and microgravity conditions lead to elevated MMP1, MMP3, and TIMP1 expression in lumbar intervertebral discs, promoting accelerated disc degeneration.
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Registered trials
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