GPT and gout: Interestingly, positive correlation was observed between the amounts of uric acid, bilirubin, glutamic-pyruvic transaminase (GPT) and glutamic-oxalacetic transaminase (GOT) in the blood and the genera enriched in gout patients (such as Bacteroides, Holdemania, Anaerotruncus, etc), revealing a number of potential bacteria taxa whose activities might be implicated in the development of gout (Supplementary Fig. 3A).