TY - JOUR AU - NAKAJIMA,, Teruo AB - Abstract The biochemical mechanisms of the renal toxicity of 5-hydroxy-L-tryptophan to rats were studied using Wistar and Sprague Dawley rats, which had different LD60 values. When the amino acid was injected intraperitoneally, Wistar rats, which had a low LD60 value of 5-hydroxy-L-tryptophan, excreted larger amounts of serotonin and smaller amounts of 5-hydroxyindole acetic acid into the urine than Spraque Dawley rats, which had a high LD50 value. The activity of renal aromatic L-amino acid decarboxylase was higher in Wistar rats than in Sprague Dawley rats, while the activity of renal aromatic amino acid transaminase was in an opposite relationship. The activity of renal monoamine oxidase was almost the same in both strains and the activity of renal UDP glucuronyltransferase in Wistar rats was higher than that in Sprague Dawley rats. Since the renal damage caused in rats by 5-hydroxy-L-tryptophan was very similar to that caused by serotonin, the amine formed from the administered amino acid was thought to be an important factor for the renal necroses, and the difference in serotonin formation from the administered precursor amino acid may be one of the important factors leading to the difference in LD60 values in the two strains of rats. This content is only available as a PDF. © 1979, by the Japanese Biochemical Society TI - Biochemical Studies on the Mechanism of Difference in the Renal Toxicity of 5-Hydroxy-L-Tryptophan between Sprague Dawley and Wistar Rats JF - The Journal of Biochemistry DO - 10.1093/oxfordjournals.jbchem.a132622 DA - 1979-10-01 UR - https://www.deepdyve.com/lp/oxford-university-press/biochemical-studies-on-the-mechanism-of-difference-in-the-renal-2ld2zvmQHQ SP - 907 EP - 913 VL - 86 IS - 4 DP - DeepDyve ER -