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Operational and Intervention Effects of Targeted Tuina in Lumbar Intervertebral Disc Degeneration Model Rabbits
Published on: July 21, 2023
[BMSCs-chitosan hydrogel complex transplantation for treating intervertebral disc degeneration]
1Department of Orthopedics, Xinqiao Hospital, the Third Military Medical University, Chongqing, 400037, P.R. China.
Summary
Bone marrow-derived mesenchymal stem cells (BMSCs) within a chitosan hydrogel effectively repaired intervertebral disc degeneration in rabbits. This transplantation approach shows promise for treating disc degeneration and offers a foundation for clinical applications.
Area of Science:
- Regenerative Medicine
- Biomaterials Science
- Orthopedics
Background:
- Intervertebral disc degeneration (IVDD) is a significant cause of low back pain.
- Current treatments for IVDD are limited and often focus on symptom management rather than regeneration.
- Tissue engineering offers a promising avenue for IVDD treatment.
Purpose of the Study:
- To evaluate the therapeutic potential of bone marrow-derived mesenchymal stem cells (BMSCs) combined with chitosan hydrogel for treating intervertebral disc degeneration.
- To establish an experimental basis for the clinical application of this regenerative approach.
Main Methods:
- BMSCs were isolated, cultured, and labeled with 5-BrdU from New Zealand rabbits.
- A BMSCs-chitosan hydrogel complex was prepared.
- A rabbit model of intervertebral disc degeneration was established and treated with the BMSCs-chitosan hydrogel complex, PBS solution, or no treatment (control).
- Histological and immunohistochemical analyses (HE, safranin O, Col II staining) were performed after 4 weeks.
Main Results:
- BMSCs survived and proliferated within the hydrogel post-transplantation.
- Histological analysis showed improved disc structure and distinct nucleus pulposus/annulus fibrosus boundaries in the transplantation group compared to the degeneration group.
- Safranin O and Col II staining indicated enhanced matrix production and tissue regeneration in the treated discs, with no significant difference from the control group.
- Gray value analysis of Col II staining confirmed significant differences between the treated groups and the degeneration group.
Conclusions:
- The rabbit BMSCs-chitosan hydrogel complex demonstrated significant therapeutic effects in repairing intervertebral disc degeneration.
- This study provides a strong experimental foundation for the clinical use of injectable tissue-engineered nucleus pulposus complexes for treating IVDD.
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