title: [Tissue engineered tympanic membrane repairment materials with adipose-derived stem cells].
abstract: OBJECTIVE
  To explore the morphology, proliferative activity and adhesion of adipose-derived stem cells (ASC) seeded in the polylactic-co-glycolic acid (PLGA) scaffold, and to provide experimental data for fabricating tissue engineered tympanic membrane repairment materials.
  
  
  METHODS
  Wistar rats were selected, and the ASC were isolated and co-cultured with the PLGA scaffold. The morphology and proliferative activity of ASC in the scaffold were examined by immunofluorescence of Vimentin and Ki67 respectively. All the immunofluorescence signals were analyzed by a confocal laser scan microscopy system FLUOVIEW FV1000. The adhesion of ASC to the PLGA scalfold was determined by scanning electron microscopy.
  
  
  RESULTS
  Immunofluorescence of vimentin showed rats ASC displayed normal morphology and grew orderly in the PLGA scalfold. Immunofluorescence of Ki67 showed the normal active proliferation of ASC in the scaffolds. The Ki67 mean positive index (x(-) ± s) of the ASC in the scalfold was (8.21 ± 1.76)%, while in control group (cultured without PLGA scalfold) was (9.06 ± 1.95)%. There was no statistic significance between the two groups (t = 1.03, P = 0.30). Scanning electron microscopy demonstrated ASC adhered well to the PLGA scalfold, the pseudopodia of ASC could also be observed and the proliferative cell conjunction was tight.
  
  
  CONCLUSIONS
  ASC has good biocompatible to the PLGA scaffold and could normally adhere and proliferate in PLGA scaffold.
authors.affiliation: Department of Otorhinolaryngology Head and Neck Surgery, Navy General Hospital, Beijing 100037, China.
authors.forename: Hui-jia
authors.initials: HJ
authors.lastname: Lei
authors.forename: Jian-jun
authors.initials: JJ
authors.lastname: Sun
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
authors.forename: Xue-sheng
authors.initials: XS
authors.lastname: Li
authors.forename: Ben-gang
authors.initials: BG
authors.lastname: Peng
mesh_terms: D017667:Adipocytes / Q000166:cytology*; D000818:Animals; D001672:Biocompatible Materials; D002454:Cell Differentiation; D002478:Cells, Cultured; D008297:Male; D008422:Materials Testing; D051381:Rats; D017208:Rats, Wistar; D013234:Stem Cells / Q000166:cytology*; D023822:Tissue Engineering / Q000379:methods*; D014432:Tympanic Membrane
chemical_list: D001672:Biocompatible Materials