title: Effect of discarded keratin-based biocomposite hydrogels on the wound healing process in vivo.
abstract: Biocompatible keratin-based hydrogels prepared by electron beam irradiation (EBI) were examined in wound healing. As the EBI dose increased to 60 kGy, the tensile strength of the hydrogels increased, while the percentage of elongation of the hydrogels decreased. After 7 days, the dehydrated wool-based hydrogels show the highest mechanical properties (the % elongation of 1341 and the tensile strength of 6030 g/cm(2) at an EBI dose of 30 kGy). Excision wound models were used to evaluate the effects of human hair-based hydrogels and wool-based hydrogels on various phases of healing. On post-wounding days 7 and 14, wounds treated with either human hair-based or wool-based hydrogels were greatly reduced in size compared to wounds that received other treatments, although the hydrocolloid wound dressing-treated wound also showed a pronounced reduction in size compared to an open wound as measured by a histological assay. On the 14th postoperative day, the cellular appearances were similar in the hydrocolloid wound dressing and wool-based hydrogel-treated wounds, and collagen fibers were substituted with fibroblasts and mixed with fibroblasts in the dermis. Furthermore, the wound treated with a human hair-based hydrogel showed almost complete epithelial regeneration, with the maturation of immature connective tissue and hair follicles and formation of a sebaceous gland.
authors.affiliation: Department of Organic Materials & Fiber Engineering, Chonbuk National University, Jeonju 561-756, South Korea.
authors.forename: Mira
authors.initials: M
authors.lastname: Park
authors.affiliation: Department of Chemistry, Inha University, 100 Inharo, Incheon 402-751, South Korea.
authors.forename: Hye Kyoung
authors.initials: HK
authors.lastname: Shin
authors.affiliation: Department of BIN fusion technology, Chonbuk National University, Jeonju 561-756, South Korea.
authors.forename: Byoung-Suhk
authors.initials: BS
authors.lastname: Kim
authors.affiliation: Department of Veterinary Anatomy, College of Veterinary Medicine and Bio-safety Research institute, Chonbuk National University, Jeonju 561-756, South Korea.
authors.forename: Myung Jin
authors.initials: MJ
authors.lastname: Kim
authors.affiliation: Department of Veterinary Anatomy, College of Veterinary Medicine and Bio-safety Research institute, Chonbuk National University, Jeonju 561-756, South Korea.
authors.forename: In-Shik
authors.initials: IS
authors.lastname: Kim
authors.affiliation: Department of Veterinary Anatomy, College of Veterinary Medicine and Bio-safety Research institute, Chonbuk National University, Jeonju 561-756, South Korea. Electronic address: parkb@jbnu.ac.kr.
authors.forename: Byung-Yong
authors.initials: BY
authors.lastname: Park
authors.affiliation: Department of BIN fusion technology, Chonbuk National University, Jeonju 561-756, South Korea. Electronic address: khy@jbnu.ac.kr.
authors.forename: Hak-Yong
authors.initials: HY
authors.lastname: Kim
mesh_terms: D000818:Animals; D001458:Bandages; D001672:Biocompatible Materials / Q000494:pharmacology*; D003094:Collagen / Q000187:drug effects; D020405:Dermis / Q000187:drug effects; D005347:Fibroblasts / Q000187:drug effects; D018859:Hair Follicle / Q000187:drug effects; D006801:Humans; D020100:Hydrogels / Q000494:pharmacology*; D007633:Keratins / Q000494:pharmacology*; D012867:Skin / Q000187:drug effects; D013718:Tensile Strength; D014935:Wool / Q000187:drug effects; D014945:Wound Healing / Q000187:drug effects*
chemical_list: D001672:Biocompatible Materials; D020100:Hydrogels; D007633:Keratins; D003094:Collagen
keywords: Electron beam; Fibroblast and collagen fiber; Hydrogel; Keratin; Wound healing