Figure 7. Correlation among metabolites and inflammatory markers. Correlations of (A) 3−phenylpropionic acid and tumor necrosis factor alpha (TNFα), (B) 3−phenylpropionic acid and indole-3-phenylpropionic acid, (C) indol-3-propionic acid and N1-acetylspermidine or (D) N1,N8-diacetylspermidine or (E) N1,N12-diacetylspermine.