title: Protective effects of salidroside on hydrogen peroxide-induced apoptosis in SH-SY5Y human neuroblastoma cells.
abstract: Oxidative stress plays an important role in Alzheimer's disease and other neurodegenerative disorders. Salidroside, a phenylpropanoid glycoside isolated from Rhodiola rosea L, shows potent antioxidant property. In this paper, the neuroprotective effects of salidroside on hydrogen peroxide (H2O2)-induced apoptosis in SH-SY5Y cells were investigated. Pretreatment with salidroside markedly attenuated H2O2-induced cell viability loss and apoptotic cell death in a dose-dependent manner. The mechanisms by which salidroside protected neuron cells from oxidative stress included the induction of several antioxidant enzymes, thioredoxin, heme oxygenase-1, and peroxiredoxin-I; the downregulation of pro-apoptotic gene Bax and the upregulation of anti-apoptotic genes Bcl-2 and Bcl-X(L). Furthermore, salidroside dose-dependently restored H2O2-induced loss of mitochondrial membrane potential as well as the elevation of intracellular calcium level. These results suggest that salidroside has protective effects against oxidative stress-induced cell apoptosis, which might be a potential therapeutic agent for treating or preventing neurodegenerative diseases implicated with oxidative stress.
authors.affiliation: Jiangsu Institute of Nuclear Medicine, 20 Qian Rong Road, Wuxi, Jiangsu 214063, China.
authors.forename: Li
authors.initials: L
authors.lastname: Zhang
authors.forename: Huixin
authors.initials: H
authors.lastname: Yu
authors.forename: Yang
authors.initials: Y
authors.lastname: Sun
authors.forename: Xiufeng
authors.initials: X
authors.lastname: Lin
authors.forename: Bo
authors.initials: B
authors.lastname: Chen
authors.forename: Chen
authors.initials: C
authors.lastname: Tan
authors.forename: Guoxian
authors.initials: G
authors.lastname: Cao
authors.forename: Zhengwu
authors.initials: Z
authors.lastname: Wang
mesh_terms: D000975:Antioxidants / Q000008:administration & dosage / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects*; D002118:Calcium / Q000378:metabolism; D045744:Cell Line, Tumor; D002470:Cell Survival / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D005786:Gene Expression Regulation / Q000187:drug effects; D005960:Glucosides / Q000008:administration & dosage / Q000302:isolation & purification / Q000494:pharmacology*; D051547:Heme Oxygenase-1 / Q000187:drug effects / Q000378:metabolism; D006801:Humans; D006861:Hydrogen Peroxide; D053078:Membrane Potential, Mitochondrial / Q000187:drug effects; D009447:Neuroblastoma / Q000188:drug therapy*; D009474:Neurons / Q000166:cytology / Q000187:drug effects; D018384:Oxidative Stress / Q000187:drug effects; D010544:Peroxidases / Q000187:drug effects / Q000378:metabolism; D054464:Peroxiredoxins; D010636:Phenols / Q000008:administration & dosage / Q000302:isolation & purification / Q000494:pharmacology*; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000378:metabolism; D029771:Rhodiola / Q000737:chemistry*; D013879:Thioredoxins / Q000187:drug effects / Q000378:metabolism; D051028:bcl-2-Associated X Protein / Q000378:metabolism; D051020:bcl-X Protein / Q000378:metabolism
chemical_list: D000975:Antioxidants; D005960:Glucosides; D010636:Phenols; D019253:Proto-Oncogene Proteins c-bcl-2; D051028:bcl-2-Associated X Protein; D051020:bcl-X Protein; D013879:Thioredoxins; D006861:Hydrogen Peroxide; D010544:Peroxidases; D054464:Peroxiredoxins; D051547:Heme Oxygenase-1; C009172:rhodioloside; D002118:Calcium