Elevation of urinary alpha-1-antitrypsin and transferrin excretion in children of patients with nephrolithiasis

Children of patients with calcium oxalate had increased urinary protein excretion, including AAT, TF, AMBP, and fetuin-A, considering the consequences of abnormal urine compositions. Increased excretion of these proteins may impact stone formation in these high-risk childhood members by regulation of renal inflammation, oxidation, crystallization, and crystal growth. We propose that AAT and TF excretion rates are potentially used as indicators for urinary supersaturation in high-risk populations.