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Metabolism mediated interaction of α-asarone and Acorus calamus with CYP3A4 and CYP2D6.


PMID 21062640

Abstract

The present study was aimed to investigate the possible interaction of the standardized extract of Acorus calamus (AC) with Cytochrome P450 enzyme, quantitative determination of the α-asarone in the AC rhizome was performed by RP-HPLC method. In vitro interaction of the plant extract was evaluated by CYP450-carbon monoxide complex (CYP450-CO) assay. Effect on individual isoforms such as CYP3A4 and CYP2D6 isozymes were analyzed through fluorescence product formation and respective IC(50) values were determined. CYP450-CO assay showed moderate interaction potential. Extract showed higher IC(50) values (46.84±1.83-32.99±2.21 μg/ml) comparing to the standard inhibitors and lower IC(50) value than α-asarone (65.16±2.37-42.15±2.45 μg/ml).

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