| خلاصه مقاله | Introduction
The most common back and neck discomfort is closely linked to the dysfunction of intervertebral discs
(IVDs) as they undergo degeneration. Intervertebral discs (IVDs) are composed of three distinct structures,
namely the nucleus pulposus (NP), the annulus fibrosus (AF), and vertebral end-plates (VEP). With advancing
age, there is a decrease in the water content of the NP, resulting in the accumulation of mechanical loads on the
annulus. Consequently, the NP experiences wear and cracking, leading to an ensuing inflammatory reaction
and the occurrence of a prolapsed intervertebral disc.
Methods
Current therapeutic approaches for degenerative disc disease provide pain relief or partially restore the
native functions of IVDs. The application of biomimetic materials in tissue engineering represents a new
strategy to restore the structure and function of IVDs. Nanofiber scaffolds are widely utilized in the engineering
of soft orthopedic tissues such as intervertebral discs due to their extensive surface area, structural similarities
to components of the extracellular matrix, capacity to deliver bioactive signals, flexibility in polymer selection,
and cost-effective fabrication methods. Fabricated IVDs must simulate the structure of native discs. Long-term
implantation should show good shape maintenance, hydration, integration with surrounding tissues, and
mechanical support and flexibility.
Results and Conclusions
Biodegradable nanofibers can carry anti-inflammatory drugs and cytokines for gradual release, aiding in
healing and preventing inflammation. Synthetic scaffolds loaded with bioactive materials, stem cells, and
growth factors can support IVDs for long-term cure. The use of natural materials like silk with textile design
features can imitate IVD structure, providing cytocompatibility, biodegradability, high strength, and stiffness in
tension and compression. Nanofiber-based scaffolds, with their extraordinary properties, provide researchers
with the opportunity to design scaffolds that can mimic the morphological and mechanical properties of
native IVDs. |