title: Effect of strontium ranelate on hydrogen peroxide-induced apoptosis of CRL-11372 cells.
abstract: In vitro and in vivo studies have proven strontium to be an osteoinductive trace element. The effect of strontium ranelate (SR) on H(2)O(2)-induced apoptosis of CRL-11372 cells and optimization of its anti-apoptotic dose were the aims of this study. After 1 h of pretreatment with SR 1 microM, 50 microM, 100 microM, 500 microM, and 1,000 microM concentrations, CRL-11372 osteoblasts were exposed to 100 microM H(2)O(2) for periods of 6-12 h. The same experiments were repeated without H(2)O(2). The apoptotic index and viability of cells were assessed quantitatively with a fluorescent dye and qualitatively with agarose gel electrophoresis. Concentrations of 1-100 microM of SR with a 6-h treatment and only 1 microM concentration with a 12-h treatment inhibited the apoptotic effect of H(2)O(2) on cultured osteoblasts significantly (P < 0.05). SR was shown to inhibit H(2)O(2)-induced apoptosis of CRL-11372 cells in a dose-dependent manner.
authors.affiliation: Department of Orthopaedics and Traumatology, Faculty of Medicine, Gazi University, Besevler, 06510, Ankara, Turkey.
authors.forename: Alpaslan
authors.initials: A
authors.lastname: Senkoylu
authors.forename: Akin
authors.initials: A
authors.lastname: Yilmaz
authors.forename: Mehmet Ali
authors.initials: MA
authors.lastname: Ergun
authors.forename: Mustafa N
authors.initials: MN
authors.lastname: Ilhan
authors.forename: Aykin
authors.initials: A
authors.lastname: Simsek
authors.forename: Necdet
authors.initials: N
authors.lastname: Altun
authors.forename: Selcuk
authors.initials: S
authors.lastname: Bolukbasi
authors.forename: Sevda
authors.initials: S
authors.lastname: Menevse
mesh_terms: D017209:Apoptosis / Q000187:drug effects*; D002460:Cell Line; D002470:Cell Survival / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D004587:Electrophoresis, Agar Gel; D006801:Humans; D006861:Hydrogen Peroxide / Q000494:pharmacology*; D009942:Organometallic Compounds / Q000494:pharmacology*; D013876:Thiophenes / Q000494:pharmacology*; D013997:Time Factors
chemical_list: D009942:Organometallic Compounds; D013876:Thiophenes; C081587:strontium ranelate; D006861:Hydrogen Peroxide