Objective To investigate the changes of differential serum proteins in maintenance hemodialysis patients with diabetic nephropathy before and after hemodialysis by matrix-assisted laser desorption/ionization time of flight mass spectrometry(MALDI-TOF MS)technology. Methods Serum before and after dialysis and dialysis waste from hemodialysis patients with diabetic nephropathy were collected and detected by MALDI-TOF MS analysis.And the peptide fingerprint which existed differential proteins were analyzed to ...