LCN2 and hereditary elliptocytosis: As an endogenous protective mechanism, RIPC ameliorated renal damage induced by iohexol exposure, manifesting as lower SCr and urinary NGAL (P < 0.05, Figures 2(a) and 2(b)) levels and lower HE injury scores (P < 0.05, Figures 2(d) and 2(e)) than those in the sham + CM group.