title: Effects of chitin and chitosan on collagen synthesis in wound healing.
abstract: Collagen synthesis was evaluated by measuring prolyl hydroxylase (PHL) activity induced within rat granulation tissue by a polyester non-woven fabric (NWF, 1 x 1 cm, 0.6 mm in thickness) impregnated with a chitin or chitosan suspension ranging in concentration from 0.1 to 10 mg/ml. In addition, PHL activity induced in rat granulation tissue by a NWF impregnated with a phosphate buffer solution was examined as a control. The PHL activity in each group remained low until 4 days post-implantation (Day 4). However, in the 10 mg chitin group, the PHL activity increased rapidly without scatter of the data at Day 7 and remained at a plateau until Day 14. In other groups, PHL activity increased linearly until Day 14. The data varied widely at Day 7. Compared to chitosan, chitin at the higher concentration was found to induce stable collagen synthesis in the early wound healing process.
authors.affiliation: Department of Veterinary Surgery, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan.
authors.forename: Kazuo
authors.initials: K
authors.lastname: Kojima
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Okamoto
authors.forename: Kazuya
authors.initials: K
authors.lastname: Kojima
authors.forename: Katsuyuki
authors.initials: K
authors.lastname: Miyatake
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Fujise
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Shigemasa
authors.forename: Saburo
authors.initials: S
authors.lastname: Minami
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D002686:Chitin / Q000494:pharmacology*; D048271:Chitosan / Q000494:pharmacology*; D003094:Collagen / Q000096:biosynthesis*; D006097:Granulation Tissue / Q000378:metabolism; D006652:Histological Techniques; D011091:Polyesters; D011393:Procollagen-Proline Dioxygenase / Q000378:metabolism; D051381:Rats; D013997:Time Factors; D014945:Wound Healing / Q000187:drug effects*
chemical_list: D011091:Polyesters; D002686:Chitin; D003094:Collagen; D048271:Chitosan; D011393:Procollagen-Proline Dioxygenase