title: In situ forming hydrogel composed of hyaluronate and polygalacturonic acid for prevention of peridural fibrosis.
abstract: Hyaluronic acid-based hydrogels can reduce postoperative adhesion. However, the long-term application of hyaluronic acid is limited by tissue mediated enzymatic degradation. To overcome this limitation, we developed a polygalacturonic acid and hyaluronate composite hydrogel by Schiff's base crosslinking reaction. The polygalacturonic acid and hyaluronate composite hydrogels had short gelation time (less than 15 s) and degraded by less than 50 % in the presence of hyaluronidase for 7 days. Cell adhesion and migration assays showed polygalacturonic acid and hyaluronate composite hydrogels prevented fibroblasts from adhesion and infiltration into the hydrogels. Compared to hyaluronate hydrogels and commercial Medishield™ gels, polygalacturonic acid and hyaluronate composite hydrogel was not totally degraded in vivo after 4 weeks. In the rat laminectomy model, polygalacturonic acid and hyaluronate composite hydrogel also had better adhesion grade and smaller mean area of fibrous tissue formation over the saline control and hyaluronate hydrogel groups. Polygalacturonic acid and hyaluronate composite hydrogel is a system that can be easy to use due to its in situ cross-linkable property and potentially promising for adhesion prevention in spine surgeries.
authors: Department of Biomedical Engineering, National Yang-Ming University, No. 155, Sec. 2, Linong Street, Taipei, 112, Taiwan, ROC.
authors: Cheng-Yi
authors: CY
authors: Lin
authors: Hsiu-Hui
authors: HH
authors: Peng
authors: Mei-Hsiu
authors: MH
authors: Chen
authors: Jui-Sheng
authors: JS
authors: Sun
authors: Tse-Ying
authors: TY
authors: Liu
authors: Ming-Hong
authors: MH
authors: Chen
mesh_terms: D000276:Adjuvants, Immunologic / Q000008:administration & dosage; D000818:Animals; D019245:Compressive Strength; D004388:Dura Mater / Q000187:drug effects* / Q000473:pathology*; D006244:Hardness; D006820:Hyaluronic Acid / Q000008:administration & dosage*; D020100:Hydrogels / Q000008:administration & dosage*; D008297:Male; D010368:Pectins / Q000008:administration & dosage*; D051381:Rats; D017207:Rats, Sprague-Dawley; D000267:Tissue Adhesions / Q000473:pathology / Q000517:prevention & control*; D016896:Treatment Outcome
chemical_list: D000276:Adjuvants, Immunologic; D020100:Hydrogels; D010368:Pectins; D006820:Hyaluronic Acid; C003181:polygalacturonic acid