MPO and Hypertension: A significant correlation between the LLF and MPO (U/L; n=69, r=0.255, P<0.05; Figure 1), between LLF and XO (U/L; n=69, r=0.244, P<0.05; Figure 2), and between MDA (μmol/L) and GPx (U/L; n=69, r=0.250, P<0.05; Figure 3) was also found in serum of patients with hypertension.