Glucuronidation is the dominating in vivo metabolism pathway of herbacetin: Elucidation of herbacetin pharmacokinetics after intravenous and oral administration in rats

Autor: Beikang Ge, Liang Zhao, Xiaorong Li, Pingxiang Xu, Ming Xue
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Journal of Functional Foods, Vol 40, Iss , Pp 659-669 (2018)
Druh dokumentu: article
ISSN: 1756-4646
DOI: 10.1016/j.jff.2017.12.006
Popis: The promising potential benefits of herbacetin in human entail its pharmacokinetic investigations, but the metabolic fate of this natural compound in vivo remains a field of unknown so far. The current study, for the first time, identified and quantified seven herbacetin-metabolites from rat urine, feces and bile after administration of herbacetin to rats. It was found that herbacetin was excreted primarily from rat urine in the form of glucuronide-conjugations. Subsequent in vitro enzyme kinetic studies and in vivo pharmacokinetic investigations suggested an extensive hepatic metabolism of herbacetin and the high exposure of herbacetin-glucuronides in systemic circulation. The clearance, t1/2 and bioavailability of herbacetin in rats were determined as 16.4 ± 1.92 ml·kg/min, 11.9 ± 2.7 min, and 1.32%, respectively. On basis of these findings, a comprehensive metabolic pathway of herbacetin in rats was composed, which was crucial for the further assessments of herbacetin therapeutic effects and mechanism of pharmacological action.
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