Rabbit Model for Studying Intervertebral Disc Aging
Author Information
Author(s): Clouet Johann, Pot-Vaucel Marianne, Grimandi Gaël, Masson Martial, Lesoeur Julie, Fellah Borhane H, Gauthier Olivier, Fusellier Marion, Cherel Yan, Maugars Yves, Guicheux Jérôme, Vinatier Claire
Primary Institution: INSERM (Institut National de la Santé et de la Recherche Médicale) U791, University of Nantes, France
Hypothesis
Can the intervertebral disc of rabbits serve as a valuable model for understanding tissue and cellular changes during aging?
Conclusion
The study confirms that rabbits are a consistent model for age-dependent intervertebral disc changes, correlating tissue alterations with cellular modifications.
Supporting Evidence
- MRI analysis showed an early age-dependent increase in Pfirrmann's grading.
- Histological scoring indicated significant increases in tissue degeneration with age.
- Transcript levels of COL2A1 and AGC1 decreased, while COL1A1, MMP-13, BMP-2, MGP, and p21 increased with age.
Takeaway
This study shows that as rabbits get older, their intervertebral discs change in ways that are similar to how human discs age, making rabbits a good model for research.
Methodology
MRI and histological analysis were performed on lumbar intervertebral discs from rabbits aged 1, 6, and 30 months, along with gene expression analysis using quantitative real-time PCR.
Limitations
Rabbits have notochordal cells in their nucleus pulposus up to 6 months, and their spine may be subjected to different loading forces compared to humans.
Participant Demographics
New Zealand White rabbits aged 1, 6, and 30 months.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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