Abstract:Objective To investigate the change rules and characteristics of Scr, BUN and CysC in over 60- year breast cancer patients with diabetes mellitus before and after TE scheme neoadjuvant chemotherapy. Methods Eighty-six breast cancer patients over 60 years complicated with diabetes mellitus were selected from Harrison International Peace Hospital. Scr, BUN and CysC before and after TE scheme neoadjuvant chemotherapy were detected and analyzed. Results Scr, BUN and CysC detection results of the breast cancer patients with diabetes mellitus showed increasing trends after neoadjuvant chemotherapy. Scr and BUN detection results were not statistically different before and after neoadjuvant chemotherapy ( P > 0.05), CysC detection results were significantly different before and after neoadjuvant chemotherapy (P < 0.05). Conclusions In over 60-year breast cancer patients with diabetes mellitus, CysC significantly increases after neoadjuvant chemotherapy, showing that TE scheme of neoadjuvant chemotherapy could induce certain renal damage to breast cancer patients with diabetes. Monitoring kidney function changes in the patients with breast cancer during the process of neoadjuvant chemotherapy has important clinical significance. Scr and BUN do not have significant changes before and after neoadjuvant chemotherapy.