“…So, we suspected that the obtained purine-reducing result of Q201E has been discounted due to the component complexity of the fish sauce system. In addition, 1/3 of uric acid in the human body is metabolized through the intestine, and uric acid cannot enter the blood through the rat intestine ( Bronk and Shaw, 1986 , Yasujima et al, 2018 ), oral administration of uric acid in mice did not cause an increase in plasma uric acid even had a protective effect against indomethacin induced intestinal injury in mice ( Wada et al, 2022 , Yasutake et al, 2017 ). And it has been reported that the effect of oral hypoxanthine on blood uric acid in the subjects is higher than that of xanthine ( Clifford, Riumallo, Young, & Scrimshaw, 1976 ), so we believe that the effect of uric acid in food on the human body is less than that of hypoxanthine and purine precursors.…”