Plasma TMAO is correlated with SBP, SOD activity, creatinine and BUN in normotensive and hypertensive adults. Plasma levels of TMAO (A), SOD activity (C), creatinine (E) and BUN (G) in normotensive (n = 32) or hypertensive patients (n = 37) (*P < 0.05 vs Normotensive). Correlation analysis of plasma TMAO with SBP (B), SOD activity (D), creatinine (F) and BUN (H). Statistical differences were calculated by the paired T-test (A, C, E and G), The correlation between 2 parameters was evaluated by Pearson correlation test (B, D, F and H).