Influence of Addition of Hyaluronic Acid (HA) on the Properties of Collagen/HA Composite Scaffolds

摘要

In order to develop a scaffolding material for tissue regeneration, porous matrices containing varying composites of collagen and hyaluronic acid (HA) (from 1:0 to 0:1) were fabricated using a freeze-drying method. The effect of the composition on the morphology, hydrophilicity, swelling behavior, mechanical properties, and in vitro cytotoxicity was investigated. The results showed that all the scaffolds had an interconnected pore structure with sufficient pore size for use as a support for the growth of fibroblasts. The addition of HA improved the swelling property, but reduced the compressive strength. The contact angle decreased with increasing HA content. In in vitro cytotoxicity tests using fibroblastic cells, the collagen/HA scaffolds showed no toxicity. All these results suggest that collagen/HA composite scaffolds are a potential candidate for tissue engineering scaffolds.