title: [Effects of rAAV-mediated rhBDNF gene transfection on BDNF gene expression in the retina of a rabbit model of acute high intraocular pressure].
abstract: OBJECTIVE
  To observe the changes in the expression of brain derived neurotrophic factor (BDNF) gene in the retina of rabbits with acute high intraocular pressure (IOP) after injection of recombinant adeno-associated virus (rAAV) vector containing human BDNF gene (rAAV-hBDNF), and investigate the neuroprotective mechanism of rAAV-hBDNF.
  
  
  METHODS
  The unilateral eyes of 24 white rabbits were randomly chosen as the model group with high IOP induced by saline perfusion into the anterior chamber, and the contralateral eyes served as the control group without treatment. In another 24 white rabbits, 10 microl rAAV-BDNF was injected into the vitreous body of one of the eyes 3 days before induction of high IOP. On days 1, 3, 7, and 14 after perfusion, the bilateral eyes of 6 rabbits were excised for immunohistochemistry for the expression of endogenous BDNF gene in the retina.
  
  
  RESULTS
  The number of BDNF-positive cells in the retina decreased after induction of high IOP, and injection of rAAV-hBDNF resulted in a significant increase in BDNF-positive cells as compared with the positive cell number in the high IOP model and control groups (P<0.05, P<0.01).
  
  
  CONCLUSIONS
  rAAV-mediated BDNF gene transfection can increase endogenous BDNF expression in the retina of rabbits with acute high IOP. Intravitreous injection is an effective pathway for rAAV-hBDNF gene transfection into the retina.
authors.affiliation: Department of Ophthalmology, Second Affiliated Hospital, Xi'an Jiaotong University College of Medicine, Xi'an 710004, China. xajdwjm@163.com
authors.forename: Jian-Ming
authors.initials: JM
authors.lastname: Wang
authors.forename: Nai-Xue
authors.initials: NX
authors.lastname: Sun
authors.forename: Na
authors.initials: N
authors.lastname: Hui
authors.forename: Ya-Zhi
authors.initials: YZ
authors.lastname: Fan
authors.forename: Hai-Xiao
authors.initials: HX
authors.lastname: Feng
authors.forename: Shi-Ping
authors.initials: SP
authors.lastname: Zhao
mesh_terms: D000818:Animals; D019208:Brain-Derived Neurotrophic Factor / Q000008:administration & dosage / Q000096:biosynthesis* / Q000235:genetics; D000229:Dependovirus / Q000235:genetics* / Q000378:metabolism; D005822:Genetic Vectors / Q000008:administration & dosage / Q000235:genetics; D006801:Humans; D009798:Ocular Hypertension / Q000378:metabolism*; D011817:Rabbits; D011994:Recombinant Proteins / Q000008:administration & dosage / Q000096:biosynthesis / Q000235:genetics; D012160:Retina / Q000378:metabolism*; D014162:Transfection
chemical_list: D019208:Brain-Derived Neurotrophic Factor; D011994:Recombinant Proteins