title: In vitro studies on the antioxidant and protective effect of 2-substituted -8-hydroxyquinoline derivatives against H(2)O(2)-induced oxidative stress in BMSCs.
abstract: Novel 2-vinyl-8-hydroxyquinoline derivatives as potential antioxidants and regulators of H(2)O(2)-induced oxidative stress in rat bone marrow mesenchymal stem cells (MSCs) are first reported. The antiradical properties and the reducing power of these compounds were assessed using 2, 2-diphenyl-1-picrylhydrazyl (DPPH) and auto-oxidation of pyrogallol method, respectively. The activity against lipid peroxidation was determined using ammonium thiocyanate method. The results revealed that introduction of electron-donating groups at 2nd position decreased the antioxidant activities of 8-hydroxyquinoline derivatives. In addition, compound 4, the structure of which is similar to melatonin, exhibited superior antioxidant activities in scavenging DPPH free radical, O(2) free radical, and anti-LPO activities. Except for compounds 7, 12, and 15, the other compounds exhibited a stimulatory effect on MSCs growth. Using hydrogen peroxide (H(2)O(2)), we also investigated the protective efficacy of 2-vinyl-8-hydroxyquinoline derivatives against oxidative stress-induced cell death of MSCs. Cell viability assayed by MTT method indicated that exposure of MSCs cultures to hydrogen peroxide resulted in a concentration-dependent decrease in cell viability, and compounds 4 and 5 at given concentration (2.62 x 10(-3) m) could protect MSCs against H(2)O(2)-induced oxidative stress in bone mesenchymal stem cell (BMSCs).
authors.affiliation: Institute of Functional Molecule, South China University of Technology, Guangzhou, China.
authors.forename: Ting-Ting
authors.initials: TT
authors.lastname: Wang
authors.forename: Gong-Chang
authors.initials: GC
authors.lastname: Zeng
authors.forename: Xi-Can
authors.initials: XC
authors.lastname: Li
authors.forename: He-Ping
authors.initials: HP
authors.lastname: Zeng
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D017209:Apoptosis; D001713:Biphenyl Compounds / Q000737:chemistry / Q000494:pharmacology; D016166:Free Radical Scavengers / Q000737:chemistry / Q000494:pharmacology; D006861:Hydrogen Peroxide / Q000494:pharmacology*; D015227:Lipid Peroxidation / Q000187:drug effects; D059630:Mesenchymal Stem Cells / Q000378:metabolism*; D018384:Oxidative Stress; D015125:Oxyquinoline / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D010851:Picrates / Q000737:chemistry / Q000494:pharmacology; D051381:Rats
chemical_list: D000975:Antioxidants; D001713:Biphenyl Compounds; D016166:Free Radical Scavengers; D010851:Picrates; D015125:Oxyquinoline; D006861:Hydrogen Peroxide; C004931:1,1-diphenyl-2-picrylhydrazyl