The effect of Kanglaite injection(KLT) on the proliferation and telomerase activity of rat mesangial cells Effect of gypenosides on RAGE expression and oxidative stress in human mesangial cells induced by AGEs The Inhibitive Effect of Tea Polyphenols on Oxidized Low Density Lipoprotein Intake in Cultured Rat Mesangial Cells Effect of berberine on expression of transforming growth factor-β1 and type Ⅳ collagen proteins in mesangial cells of diabetic rats with nephropathy