Critical pharmacokinetic and pharmacodynamic drug-herb interactions in rats between warfarin and pomegranate peel or guava leaves extracts

Autor: Maisa Alnaqeeb, Kenza A. Mansor, Eyad M. Mallah, Bayan Y. Ghanim, Nasir Idkaidek, Nidal A. Qinna
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: BMC Complementary and Alternative Medicine, Vol 19, Iss 1, Pp 1-12 (2019)
Druh dokumentu: article
ISSN: 1472-6882
DOI: 10.1186/s12906-019-2436-5
Popis: Abstract Background In-depth information of potential drug-herb interactions between warfarin and herbal compounds with suspected anticoagulant blood thinning effects is needed to raise caution of concomitant administration. The current study aimed to investigate the impact of co-administration of pomegranate peel and guava leaves extracts, including their quality markers namely; ellagic acid and quercetin, respectively, on warfarin’s in vivo dynamic activity and pharmacokinetic actions, in addition to potential in vitro cytochrome P450 enzymes (CYP) inhibition. Methods Influence of mentioned extracts and their key constituents on warfarin pharmacodynamic and kinetic actions and CYP activity were evaluated. The pharmacodynamic interactions were studied in Sprague Dawley rats through prothrombin time (PT) and International Normalized Ratio (INR) measurements, while pharmacokinetic interactions were detected in vivo using a validated HPLC method. Furthermore, potential involvement in CYP inhibition was also investigated in vitro on isolated primary rat hepatocytes. Results Preparations of pomegranate peel guava leaf extract, ellagic acid and quercetin in combination with warfarin were found to exert further significant increase on PT and INR values (p 0.05), however, its constituent, namely, ellagic acid significantly increased warfarin Cmax (p
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