...Shamsher Singh; Puneet Kumar Aim: Quinolinic acid (QA) is an excitotoxin that induces Huntington's-like symptoms in animals and humans. Curcumin (CMN) is a well-known antioxidant but the major problem is its bioavailability. Therefore, the present study was designed to investigate the effect of CMN...

... and valine in blocking epinephrine hyperglycemia. Several metabolites of tryptophan, namely indole-3-acetic acid, quinolinic acid, and hydroxyanthranilic acid blocked epinephrine hyperglycemia 87–99%. Xanthurenic acid, kynurenic acid, and serotonin inhibit the response 48–65%. DL-Kynurenine was the least...