title: [Inhibitory effect of diclofenac sodium on the proliferation of rabbit corneal epithelial cells in vitro].
abstract: OBJECTIVE
  To investigate the inhibitory effect of diclofenac sodium on rabbit corneal epithelial cells (RCECs) in vitro and explore its pharmacological mechanism.
  
  
  METHODS
  The fresh rabbit cornea was cultured to obtain the primary RCECs, and RCECs of passage 2 were used in this research. The cells were divided into experimental groups, the cells in which were incubated with different concentrations (18.18, 27.27, 36.36, 45.45, 54.55 μg/ml) of diclofenac sodium, and control group. The effect of diclofenac sodium on the proliferation of cells was measured by methyl thiazolyl thiazolium (MTT) assay 24, 48 and 72 h after incubation. While the RCECs were divided into experimental groups, the cells in which were incubated with 9 and 12.5 μg/ml diclofenac sodium, and control group. The cell cycle and apoptotic rate were observed by flow cytometer.
  
  
  RESULTS
  MTT assay showed that diclofenac sodium had obvious inhibitory effect on RCECs, and the inhibition rate was increasing along with the increasing concentration of diclofenac sodium and the incubation time(P<0.05). Flow cytometer showed that after incubation with diclofenac sodium, the cells in G0/G1 phase were obviously increased, and the apoptosis cusp and apoptotic rate were increased.
  
  
  CONCLUSIONS
  Diclofenac sodium exerts significant inhibitory effect on RCECs in a dosage-dependent manner, and it may function by inducing cell apoptosis and ceasing cell cycles.
authors.affiliation: Eye Hospital of China Academy of Chinese Medical Sciences, Beijing 100040, China.
authors.forename: Ningling
authors.initials: N
authors.lastname: Wu
authors.forename: Zhiyu
authors.initials: Z
authors.lastname: Du
mesh_terms: D000818:Animals; D017209:Apoptosis / Q000187:drug effects; D002453:Cell Cycle; D002455:Cell Division; D049109:Cell Proliferation / Q000187:drug effects; D002478:Cells, Cultured; D004008:Diclofenac; D004847:Epithelial Cells / Q000187:drug effects; D011817:Rabbits
chemical_list: D004008:Diclofenac