Hyaluronic acid hydrogel: a promising scaffold for restora-tion in the central nervous system

摘要

Injury in the central nervous system (CNS), stroke in the brain and trauma in the spinal cord in particular, may result in permanent disability of the patients, since CNS axons do not regenerate appreciably in their native environment due to several inhibitory molecules in the extracellular environment. Therefore, no effective clinical therapies so far are convincingly accepted for CNS injuries. Tissue engineering strategies employing biomaterials are now considered as a promising approach for restoration of these injuries, and hydrogel-based biomaterials are widely employed in this field. Among them, many studies have proven that hyaluronic acid (HA) hydrogel is a reliable and effective biomaterial, which can be a well compatible scaffold with CNS tissue and creating a good microenvironment of neural regeneration in the CNS tissue. The aim of this review is to outline how to use HA-based scaffolds to build up a suitable microenvironment of neural regeneration and restoration after CNS injury, and thereby to indicate the HA hydrogel is a promising scaffold for restoration in the CNS.