Study on inhibitory effect of EGCG on Calcium oxalate nephrolithiasis in rats and its related mechanism Effect of Rongshi granule on renal stone formation and osteopontin expression in rat urolithiasis model Effects of active fraction of Alisma orientaleon osteopontin expression in renal tissue of urolithiasis model rat with calcium oxalate stone Inhibition of resvertrol on osteoblast-like trans-differentiation of vascular smooth muscle cells