[Webinar] How to better optimize an oncology drug discovery program
Register for this webinar discussing how conventional and innovative integrated technological skills should be incorporated into an oncology program.Read more
Volha Zabelaa, Chethan Sampathb, Mouhssin Oufir, Veronika Butterweck, Matthias Hamburger
3,4-Dihydroxyphenylacetic acid (DOPAC) and 3-hydroxyphenylacetic acid (3-HPAA) are intestinal metabolites of the dietary flavonoid quercetin. DOPAC reportedly showed anxiolytic activity after i.p. administration in rats. The fate of these metabolites after consumption, and the pharmacological properties of 3-HPAA in the body are largely unknown. The aim of the current study was to characterize pharmacokinetic properties of DOPAC and 3-HPAA after intravenous bolus application in rats. UHPLC-MS/MS methods for quantification of DOPAC and 3-HPAA levels in lithium heparin Sprague Dawley rat plasma were developed and validated according to international regulatory guidelines. Non-compartmental and compartmental analyses were performed. Pharmacokinetic profiles of DOPAC and 3-HPAA followed a two-compartment body model, with a fast distribution into peripheral tissues (half-lives of 3.27–5.26 min) and rapid elimination from the body (half-lives of 18.4–33.3 min).
Ref: Fitoterapia; Volume 142, April 2020, 104526