title: Effects of a polysaccharide nanogel-crosslinked membrane on wound healing.
abstract: Wound-dressing materials that promote wound healing while protecting wounds from infections are advantageous for clinical applications. Hence, we developed a cholesterol-bearing pullulan (CHP) nanogel that stimulated wound healing; however, it was mechanically weak and difficult to handle. Thus, the purpose of this study was to examine precisely the effects of a mechanically reinforced nanogel-crosslinked (NanoClik) membrane on wound healing.
  
  
  
  NanoClik was prepared by mixing a thiol-terminated polyethylene glycol solution and an acryloyl group-modified CHP nanogel solution. A thin silicone sheet membrane, which was combined with NanoClik, was prepared. The NanoClick membranes and both positive and negative control membranes (collagen combined with silicone membrane and silicone membrane alone, respectively) were tested in vivo using a dorsal skin defect rat model. The rate and extent of wound healing was compared between groups after 7 and 14 days of implantation.
  
  
  
  In the NanoClik membrane group, the wound area was significantly reduced and neoepithelialization was promoted, compared with that observed in the other groups. In addition, extension and accumulation of collagen fibers were evident in the NanoClik membrane group.
  
  
  
  The NanoClik membrane is a strong candidate for use as an effective and safe wound-dressing material. © 2015 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 544-550, 2017.
authors.affiliation: Department of Masticatory Function Rehabilitation, Oral Implantology and Regenerative Dental Medicine, Tokyo Medical and Dental University, Tokyo, Japan.
authors.forename: Hiroki
authors.initials: H
authors.lastname: Maeda
authors.affiliation: Department of Masticatory Function Rehabilitation, Oral Implantology and Regenerative Dental Medicine, Tokyo Medical and Dental University, Tokyo, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kobayashi
authors.affiliation: Department of Masticatory Function Rehabilitation, Oral Implantology and Regenerative Dental Medicine, Tokyo Medical and Dental University, Tokyo, Japan.
authors.forename: Takayuki
authors.initials: T
authors.lastname: Miyahara
authors.affiliation: Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, Japan.|Japan Science and Technology Agency, Exploratory Research for Advanced Technology, Akiyoshi Bio-nanotransporter Project, Kyoto, Japan.
authors.forename: Yoshihide
authors.initials: Y
authors.lastname: Hashimoto
authors.affiliation: Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, Japan.|Japan Science and Technology Agency, Exploratory Research for Advanced Technology, Akiyoshi Bio-nanotransporter Project, Kyoto, Japan.
authors.forename: Kazunari
authors.initials: K
authors.lastname: Akiyoshi
authors.affiliation: Department of Masticatory Function Rehabilitation, Oral Implantology and Regenerative Dental Medicine, Tokyo Medical and Dental University, Tokyo, Japan.
authors.forename: Shohei
authors.initials: S
authors.lastname: Kasugai
mesh_terms: D000818:Animals; D002784:Cholesterol / Q000737:chemistry / Q000494:pharmacology; D004195:Disease Models, Animal; D005936:Glucans / Q000737:chemistry / Q000494:pharmacology; D008297:Male; D008567:Membranes, Artificial; D049329:Nanostructures / Q000737:chemistry / Q000627:therapeutic use; D051381:Rats; D017208:Rats, Wistar; D014945:Wound Healing / Q000187:drug effects*; D014947:Wounds and Injuries / Q000378:metabolism / Q000473:pathology / Q000628:therapy*
chemical_list: D005936:Glucans; D008567:Membranes, Artificial; C009109:pullulan; D002784:Cholesterol
keywords: cholesterol-bearing pullulan nanogel; regeneration; wound healing