Volume 5, Issue 8 pp. e188-e196
Research Article

In situ cross-linkable hyaluronan hydrogel enhances chondrogenesis

Cecilia Aulin

Corresponding Author

Cecilia Aulin

Department of Materials Chemistry, Division of Polymer Chemistry, Uppsala University, SE-751 21 Uppsala, Sweden

Department of Materials Chemistry, Division of Polymer Chemistry, Uppsala University, SE-751 21 Uppsala, Sweden.Search for more papers by this author
Kristoffer Bergman

Kristoffer Bergman

Department of Materials Chemistry, Division of Polymer Chemistry, Uppsala University, SE-751 21 Uppsala, Sweden

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Marianne Jensen-Waern

Marianne Jensen-Waern

Department of Clinical Sciences, Section for Comparative Physiology and Medicine, Swedish University of Agricultural Sciences, SE-750 07 Uppsala, Sweden

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Patricia Hedenqvist

Patricia Hedenqvist

Department of Clinical Sciences, Section for Comparative Physiology and Medicine, Swedish University of Agricultural Sciences, SE-750 07 Uppsala, Sweden

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Jöns Hilborn

Jöns Hilborn

Department of Materials Chemistry, Division of Polymer Chemistry, Uppsala University, SE-751 21 Uppsala, Sweden

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Thomas Engstrand

Thomas Engstrand

Department of Materials Chemistry, Division of Polymer Chemistry, Uppsala University, SE-751 21 Uppsala, Sweden

Stockholm Craniofacial Centre, Department of Reconstructive Plastic Surgery, Karolinska University Hospital, SE-171 76 Stockholm, Sweden

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First published: 10 March 2011
Citations: 29

Abstract

The present work describes the feasibility of a cross-linkable injectable hyaluronan hydrogel for cartilage repair. The hydrogel used is a two-component system based on aldehyde-modified hyaluronan and hydrazide-modified polyvinyl alcohol, which are rapidly cross-linked in situ upon mixing. The in vitro study showed that chondrocytes and mesenchymal cells cultured in the gel form cartilage-like tissue, rich in glycosaminoglycans, collagen type II and aggrecan. In a rabbit animal model the injection of the hydrogel improved the healing of a full-thickness cartilage defect created in the knee as compared to non-treated controls. This rabbit study showed that the regenerated cartilage defects stained more intensely for type II collagen upon treatment with the hydrogel. The hyaluronan-based hydrogel may be used as a delivery vehicle for both growth factors and/or cells for cartilage repair. The in vivo study also indicated that the hydrogel alone has a beneficial effect on cartilage regeneration. Copyright © 2011 John Wiley & Sons, Ltd.

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