title: Platelet derived growth factor releasing chitosan sponge for periodontal bone regeneration.
abstract: With an aim of improving bone regeneration, chitosan sponge containing platelet-derived growth factor-BB (PDGF-BB) were developed. For fabrication of chitosan sponge, chitosan solution was freeze-dried, crosslinked and freeze-dried again. PDGF-BB was incorporated into the chitosan sponge by soaking chitosan sponge into the PDGF-BB solution. Release kinetics of PDGF-BB, cell attachment, proliferation capacity and bony regenerative potentials of PDGF-BB-loaded chitosan sponge were investigated. Prepared chitosan sponge retained porous structure with 100 microm pore diameter that was suitable for cellular migration and growth. Release rate of PDGF-BB could be controlled by varying initial loading content of PDGF-BB to obtain optimal therapeutic efficacy. PDGF-BB-loaded chitosan sponge induced significantly high cell attachment and proliferation level, which indicated good cellular adaptability. PDGF-BB-loaded chitosan sponge demonstrated marked increase in new bone formation and rapid calcification. Degradation of the chitosan sponge was proceeded at defect site and subsequently replaced with new bone. Histomorphometric analysis confirmed that PDGF-BB-loaded chitosan sponge significantly induced new bone formation. These results suggested that chitosan sponge and PDGF-BB-loaded chitosan sponge may be beneficial to enhance periodontal bone regeneration.
authors.affiliation: Department of Industrial Pharmacy, College of Pharmacy, Ewha Womans University, Seoul, South Korea.
authors.forename: Y J
authors.initials: YJ
authors.lastname: Park
authors.forename: Y M
authors.initials: YM
authors.lastname: Lee
authors.forename: S N
authors.initials: SN
authors.lastname: Park
authors.forename: S Y
authors.initials: SY
authors.lastname: Sheen
authors.forename: C P
authors.initials: CP
authors.lastname: Chung
authors.forename: S J
authors.initials: SJ
authors.lastname: Lee
mesh_terms: D000818:Animals; D000077214:Becaplermin; D001672:Biocompatible Materials / Q000008:administration & dosage* / Q000737:chemistry; D001704:Biopolymers / Q000737:chemistry; D001861:Bone Regeneration / Q000187:drug effects*; D002448:Cell Adhesion / Q000187:drug effects; D002455:Cell Division / Q000187:drug effects; D002686:Chitin / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000737:chemistry; D048271:Chitosan; D003692:Delayed-Action Preparations; D010006:Osteoblasts / Q000166:cytology / Q000187:drug effects; D010519:Periodontium / Q000166:cytology / Q000187:drug effects* / Q000502:physiology; D010982:Platelet-Derived Growth Factor / Q000008:administration & dosage* / Q000737:chemistry; D020574:Proto-Oncogene Proteins c-sis; D051381:Rats; D017207:Rats, Sprague-Dawley; D012886:Skull / Q000187:drug effects / Q000502:physiology
chemical_list: D001672:Biocompatible Materials; D001704:Biopolymers; D003692:Delayed-Action Preparations; D010982:Platelet-Derived Growth Factor; D020574:Proto-Oncogene Proteins c-sis; D002686:Chitin; D000077214:Becaplermin; D048271:Chitosan