IGFBP6 and acute kidney injury: Twelve were detected in the AKI group (Axl, CD40, EGF, IGFBP-3, IGFBP-5, Pro-MMP-9, P-selectin, SCF, VCAM-1, MIP-1 g, TNF RI, and TNF RII) and two were detected in the control group (IGFBP-6 and IGF-1).