title: Gene profiles during vestibular compensation in rats after unilateral labyrinthectomy.
abstract: OBJECTIVE
  The aims of this study were to determine changes in gene expression in the chronic state of vestibular compensation by microarray analysis and to validate the asymmetrical levels of gene expression in the ipsilateral and contralateral vestibular nucleus complexes (VNCs).
  
  
  METHODS
  Microarray analysis was used to examine the expression of genes up-regulated or down-regulated in the ipsilateral VNC at 1 and 7 days after unilateral labyrinthectomy. Up-regulated or down-regulated gene expression in the ipsilateral and contralateral VNCs was then validated by reverse transcriptase polymerase chain reaction at 1, 7, 14, and 28 days after labyrinthectomy.
  
  
  RESULTS
  The genes down-regulated at 1 day after labyrinthectomy and up-regulated at 7 days after labyrinthectomy as determined by microarray analysis and reverse transcriptase polymerase chain reaction were zinc finger protein 307, zinc metallopeptidase, P34, calcitonin receptor, insulin-like growth factor binding protein 5, GATA binding protein 3, and CD151. Expression of zinc finger protein 307, zinc metallopeptidase, P34, and calcitonin receptor was up-regulated even after 7 days in the contralateral VNC of rats that had labyrinthectomy.
  
  
  CONCLUSIONS
  This study demonstrated changes in gene expression in rats during the chronic phase of vestibular compensation after unilateral labyrinthectomy and provided profiles of these changes in gene expression.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Soonchunhyang University College of Medicine, Seoul, Korea.
authors.forename: Moo Kyun
authors.initials: MK
authors.lastname: Park
authors.forename: Byung Don
authors.initials: BD
authors.lastname: Lee
authors.forename: Jong Dae
authors.initials: JD
authors.lastname: Lee
authors.forename: Hak Hyun
authors.initials: HH
authors.lastname: Jung
authors.forename: Sung Won
authors.initials: SW
authors.lastname: Chae
mesh_terms: D000818:Animals; D015536:Down-Regulation / Q000502:physiology*; D008297:Male; D046228:Microarray Analysis; D051381:Rats; D017207:Rats, Sprague-Dawley; D020133:Reverse Transcriptase Polymerase Chain Reaction; D013997:Time Factors; D015854:Up-Regulation / Q000502:physiology*; D015837:Vestibular Diseases / Q000209:etiology; D014726:Vestibular Nuclei / Q000378:metabolism* / Q000503:physiopathology; D014722:Vestibule, Labyrinth / Q000503:physiopathology / Q000601:surgery*