title: Effect on multifocal electroretinogram in persistently elevated intraocular pressure by erigeron breviscapus extract.
abstract: OBJECTIVE
  To observe the effect on multifocal electroretinogram (mfERG) in persistently elevated intraocular pressure (IOP) by erigeron breviscapus extract (also named Dengzhanhua in Chinese) in rat models.
  
  
  METHODS
  The rat models with persistently elevated IOP were established by the method of Akira. Then, erigeron breviscapus extract was given for one month to observe the effect on mfERG in persistently elevated IOP in rats.
  
  
  RESULTS
  As elevated IOP went on, the mfERG changes were mainly in weaken of reaction density with progressive development. After intervention of erigeron breviscapus extract, the total peak latency of P1 wave had recovered to some extent and the difference was significant when compared with control group (P<0.05); the total response density and P1 wave response density in second circle had risen noticeably, which had significant differences than those of control group (P<0.05).
  
  
  CONCLUSIONS
  Erigeron breviscapus extract can improve the impaired visual function of persistently elevated IOP in rats, suggesting that this extract is the effective part of erigeron breviscapus for optic neuroprotection.
authors.affiliation: Key Research Institute for Visual Function Protection with TCM, Teaching Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610075, Sichuan Province, China.
authors.forename: Xue-Jing
authors.initials: XJ
authors.lastname: Lu
authors.forename: Fu-Wen
authors.initials: FW
authors.lastname: Zhang
authors.forename: Lin
authors.initials: L
authors.lastname: Cheng
authors.forename: Ai-Qin
authors.initials: AQ
authors.lastname: Liu
authors.forename: Jun-Guo
authors.initials: JG
authors.lastname: Duan