10.1007/s10858-019-00248-2
It may be that there are general dietary (precursor amino acids and purines are both high in many foods), hydration, hepatic, or other influences that affect purines and indoleamines and TYR similarly
Materials and methods Mice NOD and NOD scid mice used at the University of Cambridge and B6(Cg)-Tyr c-2J /J (JAX #000058) or white C57BL/6, NOD.Rag2 -/- , NOD used at the Karolinska Institutet, Stockholm, Sweden, and white C57BL/6.Rag2 -/- mice used at the University of Lund (Sweden) were bred and maintained in a specific pathogen-free environment at the animal facilities and all procedures were approved by the ethical committee of Cambridge University, Karolinska Institutet, and Lund University Animal Care and Use, respectively
Toxicokinetics of Paracetamol When taken in normal therapeutic doses, it is mostly converted to nontoxic metabolites via metabolism by glucuronidation and sulphation with a small portion being oxidised via CYP450 enzyme system