title: Adenovirus-mediated delivery of p27(KIP1) to prevent wound healing after experimental glaucoma filtration surgery.
abstract: OBJECTIVE
  The aim of the study was to evaluate the outcome of adenovirus-mediated p27(KIP1) (Ad-p27) expression on wound healing after filtration surgery and to investigate the inhibition of cell proliferation induced by Ad-p27.
  
  
  METHODS
  We constructed the adenovirus recombinant vector Ad-p27 and administered it to a rabbit model of glaucoma filtration surgery by subconjunctival injection; phosphate-buffered saline (PBS) and mitomycin C (MMC) were used as controls. Intraocular pressure (IOP), bleb scores, and anterior chamber depths were observed during a 28-d period. Histological examinations, fluorescence observations and Western blot analyses were evaluated.
  
  
  RESULTS
  Ad-p27 enhanced the surgical outcome and inhibited cell proliferation when compared with PBS. Bleb scores in the Ad-p27-treated eyes were higher than those in the PBS-treated eyes on d 7 (P<0.01), 14 (P<0.01) and 21 (P<0.05). On d 28, IOP remained significantly decreased in the Ad-p27 group compared with the PBS group (P<0.05). However, no differences in bleb scores or IOPs were observed between the Ad-p27 and MMC groups. Histological analysis showed that total cell numbers were markedly reduced, and less scar tissue was observed at the surgical site in eyes treated with Ad-p27. The number of fibroblasts was decreased in Tenon's capsule in Ad-p27-treated eyes; however, a marked and diffuse signal from the green fluorescent protein (GFP) was observed in fibroblasts. Western blot analysis revealed a high level of p27(KIP1) expression in conjunctival epithelium (P<0.01), relatively high expression in superficial scleral stroma (P<0.01), and low expression in corneal epithelium in the Ad-p27 group.
  
  
  CONCLUSIONS
  Ad-p27 administration significantly improves the outcome of filtration surgery and inhibits postoperative proliferation in rabbit eyes. These findings suggest that p27(KIP1) is a potential adjunctive agent for inhibition of wound healing after filtration surgery.
authors.affiliation: Department of Ophthalmology, Second Affiliated Hospital of Medical School, Xi-an Jiaotong University, Xi-an, China. jgyang.xjtu@gmail.com
authors.forename: Jian-gang
authors.initials: JG
authors.lastname: Yang
authors.forename: Nai-xue
authors.initials: NX
authors.lastname: Sun
authors.forename: Li-jun
authors.initials: LJ
authors.lastname: Cui
authors.forename: Xiao-hua
authors.initials: XH
authors.lastname: Wang
authors.forename: Zhao-hui
authors.initials: ZH
authors.lastname: Feng