Urinary ox-LDL (CUSABIO, Houston, TX, USA) and IL-18 (R&D Systems, Minneapolis, MN, USA) levels in patients with MCD (N = 26) and healthy volunteers (N = 15) were measured using a commercially available enzyme-linked immunosorbent assay (ELISA) kit, according to the manufacturer's instructions. Both ox-LDL (mU/L) and IL-18 (pg/mL) levels were normalized to the urinary creatinine (Cr) (g/L) level of each patient or a healthy volunteer.
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