Objective To study the effect of L arginine/NOS pathway on LPS stimulated human renal mesangial cell proliferation.Methods MTT assay method was used to examine mesangial cell activity with L arginine stimulating,and nitric acid reducing enzyme assay was used to check the nitrite in supernate in order to indirectly speculate the effect of NO on LPS stimulated mesangial cells.Results L arginine inhibited the proliferation of LPS stimulated mesangial cells. There were no statistical difference of the quantities of nitrite in supernate among the groups.Conclusion LPS cannot cause human mesangial cells produce abundant NO,the inhibitive effect of L arginine on LPS stimulated human mesangial cell proliferation is independent of L arginine/NOS pathway. |