PCNA and arterial disorder: VEGF (0.35 ± 0.90), MMP-9 (0.38 ± 0.12), PCNA (0.43 ± 0.12), ERK1/2 (0.31 ± 0.11), and NF-κB (0.37 ± 0.14) were the highest in IgAN with arteriopathy group.