Journal
BIOMEDICAL MATERIALS
Volume 16, Issue 5, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1748-605X/ac1d3c
Keywords
spinal cord injury (SCI); tissue microenvironment; biomaterials; inflammation; nerve regeneration
Funding
- Natural Science Foundation of Zhejiang Province [LD21E030001]
- National Natural Science Foundation of China [51873188]
- Fundamental Research Funds for the Central Universities of China [2020XZZX004-01]
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Traumatic SCI often leads to restricted behavior recovery and paralysis. However, regulating the inflammatory microenvironment can promote nerve regeneration, offering hope for successful tissue regeneration and restoration of normal function.
Traumatic spinal cord injury (SCI) usually results in restricted behaviour recovery and even life-changing paralysis, accompanied with numerous complications. Pathologically, the initial injuries trigger a series of secondary injuries, leading to an expansion of lesion site, a mass of neuron loss, and eventual failure of endogenous axon regeneration. As the advances rapidly spring up in regenerative medicine and tissue engineering biomaterials, regulation of these secondary injuries becomes possible, shedding a light on normal functional restoration. The successful tissue regeneration lies in proper regulation of the inflammatory microenvironment, including the inflammatory immune cells and inflammatory factors that lead to oxidative stress, inhibitory glial scar and neuroexcitatory toxicity. Specifically, the approaches based on microenvironment-regulating biomaterials have shown great promise in the repair and regeneration of SCI. In this review, the pathological inflammatory microenvironments of SCI are discussed, followed by the introduction of microenvironment-regulating biomaterials in terms of their impressive therapeutic effect in attenuation of secondary inflammation and promotion of axon regrowth. With the emphasis on regulating secondary events, the biomaterials for SCI treatment will become promising for clinical applications.
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