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Aim: The "Aging and Oxidative Stress" theory is recently thought as a new mechanism of the pathogenesis related to osteoporosis.In our previous study, Tanshinol isolated from Salvia miltiorrhiza Bge (Danshen) showed effectively activities to prevent or reverse bone loss and up-regulate Wnt signaling in excess Glucocorticoid (GC) (a factor induced oxidative stress) induced osteoporosis or GC-treated rat marrow stromal cell (rMSC).