title: Preparation of water-soluble chitosan/heparin complex and its application as wound healing accelerator.
abstract: To make effective wound healing accelerator, water-soluble chitosan (WSC)/heparin (CH) complex was prepared using WSC with wound healing ability and heparin with ability to attract or bind growth factor related to wound healing process. Water-soluble CH complex was prepared by the reaction between WSC and heparin, and then, by adding distilled water to it, ointment type with high viscosity was made. To evaluate the wound healing effect, full thickness skin excision was performed on the backs of the rat and then WSC and water-soluble CH complex ointments were applied in the wounds, respectively. After 15 days, gross and histologic examination was performed. Grossly, untreated control group revealed that the wound had well defined margin and was covered by crust. The second group treated with WSC ointment revealed small wound size with less amount of covering crust and ill-defined margin, which appeared to regenerate from margin. The third group treated with water-soluble CH complex ointment appeared to be nearly completely healed. Histology of each group was well correlated to gross findings. The third group shows nearly complete regeneration of appendage structure similar to normal in the dermis in contrast to control and second group with absence and less number of skin appendages, respectively.
authors.affiliation: Green Biotechnology Research Group, The Special Division for Human Life Technology, National Institute of Advanced Industrial Science & Technology, 1-8-31, Midorigaoka, Ikeda, Osaka 563-8577, Japan. kdongk@yahoo.com
authors.forename: Dong-Keon
authors.initials: DK
authors.lastname: Kweon
authors.forename: Seok-Beom
authors.initials: SB
authors.lastname: Song
authors.forename: Yong-Yook
authors.initials: YY
authors.lastname: Park
mesh_terms: D001458:Bandages; D001672:Biocompatible Materials / Q000737:chemistry; D002240:Carbohydrate Sequence; D002686:Chitin / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry*; D048271:Chitosan; D006493:Heparin / Q000138:chemical synthesis / Q000737:chemistry*; D006801:Humans; D008969:Molecular Sequence Data; D009824:Ointments; D009844:Oligosaccharides / Q000737:chemistry; D012879:Skin Physiological Phenomena; D012995:Solubility; D017550:Spectroscopy, Fourier Transform Infrared; D013997:Time Factors; D014945:Wound Healing / Q000502:physiology*
chemical_list: D001672:Biocompatible Materials; D009824:Ointments; D009844:Oligosaccharides; D002686:Chitin; D006493:Heparin; D048271:Chitosan