In Vivo Mouse Intervertebral Disc Degeneration Model Based on a New Histological Classification

PLoS One. 2016 Aug 2;11(8):e0160486. doi: 10.1371/journal.pone.0160486. eCollection 2016.

Abstract

Although human intervertebral disc degeneration can lead to several spinal diseases, its pathogenesis remains unclear. This study aimed to create a new histological classification applicable to an in vivo mouse intervertebral disc degeneration model induced by needle puncture. One hundred six mice were operated and the L4/5 intervertebral disc was punctured with a 35- or 33-gauge needle. Micro-computed tomography scanning was performed, and the punctured region was confirmed. Evaluation was performed by using magnetic resonance imaging and histology by employing our classification scoring system. Our histological classification scores correlated well with the findings of magnetic resonance imaging and could detect degenerative progression, irrespective of the punctured region. However, the magnetic resonance imaging analysis revealed that there was no significant degenerative intervertebral disc change between the ventrally punctured and non-punctured control groups. To induce significant degeneration in the lumbar intervertebral discs, the central or dorsal region should be punctured instead of the ventral region.

MeSH terms

  • Animals
  • Disease Models, Animal
  • Disease Progression
  • Female
  • Histocytochemistry
  • Humans
  • Intervertebral Disc / diagnostic imaging
  • Intervertebral Disc / pathology*
  • Intervertebral Disc Degeneration / diagnostic imaging
  • Intervertebral Disc Degeneration / pathology*
  • Lumbar Vertebrae / diagnostic imaging
  • Lumbar Vertebrae / pathology*
  • Magnetic Resonance Imaging
  • Male
  • Mice
  • Mice, Inbred C57BL
  • Needlestick Injuries / diagnostic imaging
  • Needlestick Injuries / pathology*
  • Research Design
  • X-Ray Microtomography

Grants and funding

This work was supported partly by the Ministry of Education, Culture, Sports, Science, and Technology of Japan (a Grant-in-Aid for Challenging Exploratory Research, 26670651) (to H. Sudo). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.