Pharmacokinetics of selected chiral flavonoids: hesperetin, naringenin and eriodictyol in rats and their content in fruit juices
- 30 November 2007
- journal article
- research article
- Published by Wiley in Biopharmaceutics & Drug Disposition
- Vol. 29 (2), 63-82
- https://doi.org/10.1002/bdd.588
Abstract
The majority of pharmacokinetic studies of individual flavonoids or after ingestion of foodstuffs have overlooked the chirality of some of these xenobiotics. In order to characterize for the first time the stereoselective pharmacokinetics of three flavonoids, hesperetin, naringenin and eriodictyol were intravenously administered (20 mg/kg) to male Sprague-Dawley rats, and their stereospecific content was assessed in various fruit juices. Concentrations in serum, urine and fruit juices were characterized via HPLC and verified by LC/MS. Short half-lives (3–7 h) in serum were observed, while a better estimation of half-life (12–48 h) and the other pharmacokinetic parameters was observed using urinary data. The three flavonoids are predominantly excreted via non-renal routes (fe values of 3–7%), and undergo rapid and extensive phase II metabolism. The (2S)-epimers of the flavonoid glycosides and the S(−)-enantiomers of the aglycones were predominant and in some instances the organic fruit juices had higher concentrations than the conventional fruit juices. This study reports for the first time the stereospecific pharmacokinetics of three chiral flavonoids and their stereospecific content in fruit juices. It also reports for the first time the stereospecific pharmacokinetics of flavonoids employing urine as a more reliable biological matrix. Copyright © 2007 John Wiley & Sons, Ltd.Keywords
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