CI-AKI was dependent on resident renal phagocytes, IL-1, leukocyte recruitment, and dipeptidase-1. Levels of the inflammasome- ... Renal immune surveillance and dipeptidase-1 contribute to contrast-induced acute kidney injury. ... Renal immune surveillance and dipeptidase-1 contribute to contrast-induced acute kidney injury. ... DTA was reabsorbed and concentrated in tubular epithelial cells via the brush border enzyme dipeptidase-1 in volume-depleted ...