Figure 6.

The normalized signal intensity of genes involved in amino acid metabolism and synthesis. All data are presented as mean±s.e. and genes with no significant difference are not shown (P>0.05). Bars on the left of y axis represent genes with lower relative abundance in periodontitis, whereas bars on the right indicate genes with higher abundance in periodontitis. Out of 22 genes involved in amino acid metabolism, 9 showed distinct abundances between periodontitis (P) and healthy (H) subjects. As for amino acid synthesis, 19 out of 41 genes changed and 15 of these genes showed lower relative abundance in the periodontitis group.