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Journal of the Korean Society of Plastic and Reconstructive Surgeons 2003;30(2):217-223.
Published online March 1, 2003.
Wound Healing Effect of the Chitosan Sponge.
Ki Ho Chung, Jae Woo Park, Jae Young Chung, Ho Yun Chung, Byung Chae Cho, Bong Soo Baik
Department of Plastic & Reconstructive Surgery, College of Medicine, Kyungpook National University, Daegu, Korea. jwp@knu.ac.kr
Chitosan is a polysaccharide obtained by deacetylating chitin which is the major constituent of the exoskeleton of crustaceous water animals. Chitosan has many useful biological properties such as biocompatibility, biodegradability, hemostatic effect, antimicrobial activity and the ease of chemical modification. In order to evaluate the efficacy of chitosan as a wound dressing material, authors prepared chitosan as a sponge form and compared it with ointment dressing material, amniotic membrane and hydrocellular dressing material through the animal experiment. Four round( 3 cm) full thickness skin defect were made bilaterally on the dorsolateral aspect of the New Zealand white rabbit's trunk and four groups of dressing material -chitosan sponge, ointment dressing material, amniotic membrane and hydrocellular dressing material-were applied on the wound and evaluated grossly and histopathologically. We compared gross finding by means of percentage of wound contraction, percentage of wound epithilization and percentage of wound healed by tracing the remained wound area every week and wound biopsy were performed every other day. Chitosan sponge group and amniotic membrane group show statistically higher percentage of wound contraction and higher percentage of wound healed than the other groups (p < 0.05). Hydrocellular dressing material group shows statistically lower percentage of wound epithelization than the others(p < 0.05). During the inflammatory phase (postwounding day 1-5) chitosan sponge group and amniotic membrane group absorbed exudate effectively and demonstrate less inflammatory cell infiltration, which induce faster angiogenesis and fibroblast proliferation than the other groups. This study suggest chitosan has a potential as a new dressing material because of high absorbency of exudate, promotion of wound contraction and reduction of inflammatory reaction during the inflammatory phase of wound healing.
Keywords: Chitosan sponge; Wound healing
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