title: Dihydroxy-2,5 benzenesulphonate (dobesilate) elicits growth arrest and apoptosis in glioma cells.
abstract: OBJECTIVE
  Dihydroxy-2,5 benzenesulphonate (dobesilate) is used as an oral agent for treatment of vascular complications of diabetic retinopathy. We previously showed that blockade of fibroblast growth factor (FGF) driving angiogenesis with dobesilate inhibited new blood vessel formation in a mouse gelatine plug assay. In the present study we assessed the effects of dobesilate in rat glioma cells.
  
  
  METHODS
  Rat C6 cells line were grown as adherent cells in Dulbecco modified Eagle medium supplemented with 1% (v/v) fetal bovine serum and antibiotics. Calcium dobesilate was added in independent experiments at the following concentrations: 10, 25, 50, 75 and 100 microM, and cells were incubated for 24 hours. Effects of dobesilate in glioma cell proliferation and survival were assessed using crystal violet staining and TUNEL assay, respectively.
  
  
  RESULTS
  Incubation of glioma cells with dobesilate for 24 hours concentration-dependently decreased cell proliferation with an apparent IC50 of 25 microM, and this antiproliferative effect was related to a significant increase in glioma cell apoptosis.
  
  
  CONCLUSIONS
  The results suggest that dobesilate is a promising candidate leading to the development of a new adjuvant therapeutic strategy for gliomas.
authors.affiliation: Departamento de Investigación, Hospital Universitario Ramón y Cajal, Universidad de Alcala de Henares, Madrid, Spain. pedro.cuevas@hrc.es
authors.forename: P
authors.initials: P
authors.lastname: Cuevas
authors.forename: D
authors.initials: D
authors.lastname: Díaz-González
authors.forename: G
authors.initials: G
authors.lastname: Giménez-Gallego
authors.forename: M
authors.initials: M
authors.lastname: Dujovny
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000008:administration & dosage / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects*; D001932:Brain Neoplasms / Q000473:pathology*; D002123:Calcium Dobesilate / Q000008:administration & dosage / Q000494:pharmacology*; D002455:Cell Division / Q000187:drug effects; D045744:Cell Line, Tumor / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D004354:Drug Screening Assays, Antitumor; D005910:Glioma / Q000473:pathology*; D020128:Inhibitory Concentration 50; D051381:Rats
chemical_list: D000970:Antineoplastic Agents; D002123:Calcium Dobesilate