ACE and systemic lupus erythematosus: Furthermore, lower creatinine levels were observed in the prednisolone group (0.67 mg dL−1) and ACE groups (0.69 mg dL−1 in 100 mg kg−1 treatment group and 0.62 mg dL−1 in 400 mg kg−1 treatment group) compared to SLE-disease group (0.81 mg dL−1) (Figure 1(b)).