Abstract
Degenerative disc degeneration (DDD) is the major cause of low back pain, which seriously affects the life of patients. Current surgical and conservative treatments only relieve the pain temporarily, yet fail to restore the normal biomechanics and functions of healthy spine. Indeed, high recurrence of disc herniation commonly happens after discectomy. Degenerative changes in biomechanical and structural properties of the intervertebral disc (IVD), including fissures in annulus fibrosus (AF) and volume loss of nucleus pulposus (NP), mainly contribute to DDD development. AF plays a critical role in the biomechanical properties of IVD as it structural integrity is essential to confine NP and maintain physiological intradiscal pressure under loading. Maintaining the homeostasis of AF and NP, and thereby IVD, requires regulation of their biomechanics, which is also involved in the onset and subsequent development of AF degeneration. Therefore, it is essential to understand the biomechanical changes of AF during degeneration, which can also provide valuable insights into the repair and regeneration of AF. In this review, we focus on the biomechanical properties of AF tissue associated with its homeostasis and degeneration, and discuss the biomechanical stimulus required for regeneration of AF. We also provide an overview of recent strategies to target and modulate cell mechanics toward AF regeneration.
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Acknowledgments
This work was supported by the National Key R&D Program of China (2016YFC1100203), National Natural Science Foundation of China (81672213 and 31530024), Jiangsu Provincial Special Program of Medical Science (BL2012004), Jiangsu Provincial Clinical Orthopedic Center, Key Laboratory of Stem Cells and Biomedical Materials of Jiangsu Province and Chinese Ministry of Science and Technology, the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions, and Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX18_2529).
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The authors declare that there is no conflict of interest regarding the publication of this paper.
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Chu, G. et al. (2018). Biomechanics in Annulus Fibrosus Degeneration and Regeneration. In: Chun, H., Park, C., Kwon, I., Khang, G. (eds) Cutting-Edge Enabling Technologies for Regenerative Medicine. Advances in Experimental Medicine and Biology, vol 1078. Springer, Singapore. https://doi.org/10.1007/978-981-13-0950-2_21
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DOI: https://doi.org/10.1007/978-981-13-0950-2_21
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