cyp3a activity

1,3,7-Trimethyluric acid, a purine alkaloid, occurs as a minor metabolite of caffeine in humans. It functions as an antioxidant with the ability to scavenge hydroxyl radicals and offers protective benefits against lipid peroxidation in erythrocyte membranes.

Schisandrin A, a primary active component extracted from the traditional Eastern medicine Schisandra chinensis, inhibits CYP3A activity, with an IC50 of 6.60 μM and a Ki of 5.83 μM.

1. Dauricine has pulmonary toxicity, can produce pulmonary injury in CD-1 mice by the metabolism of Dauricine mediated by CYP3A. 2. Dauricinec can pass the blood-brain barrier, and that P-glycoprotein has an important role in the transportation of Dauricine across the blood-brain barrier. 3. Dauricine may has anti-tumor effect, can inhibit tumor cells in urinary system and colon cancer cell proliferation, invasion; induce cell apoptosis by suppressing NF-kappaB activity and the expression profile of its downstream genes.

6',7'-Dihydroxybergamottin is a potent inhibitor of CYP3A activity, and may be primarily responsible for the effects of grapefruit juice on cytochrome P450 activity in humans.