A sensitive RP-HPLC-UV method has been developed and validated for the quantification of daphnoretin in rat plasma. Daphnoretin was extracted from rat plasma by protein precipitation and liquid-liquid extraction. Sepa...A sensitive RP-HPLC-UV method has been developed and validated for the quantification of daphnoretin in rat plasma. Daphnoretin was extracted from rat plasma by protein precipitation and liquid-liquid extraction. Separation was performed on a Diamonsil C18 column （200 mm× 4.6 mm, 5 μm） with a mobile phase of methanol-20 mmol/L ammonium acetate （adjusted to pH 3.2 with acetic acid, 42：58, v/v） at a flow rate of 1.0 mL/min. The UV detector was set at 345 nm and column temperature was set at 40 ℃. The calibration curves were linear over the concentration range of 0.020-2.00 ~tg/mL, The lower limit of quantification （LLOQ） of daphnoretin in rat plasma was 0.020 μg/mL. The intra- and inter-day relative standard deviation （RSD） for measurement of quality control （QC） samples （0.050, 0.200 and 1.60 μg/mL） ranged from 5.0%-10.6%. Relative error （RE） was from ±（1.2%-2.5%）. The validated method was used successfully in a pharmacokinetic study of daphnoretin in rats after intraperitoneal injection.展开更多
Daphnoretin,belonging to coumarin compounds,is the main active ingredient of Wikstroemia indica,and has anti-inflammatory,anti-depression,anti-tumor and other pharmacological activities.This article reviews the extrac...Daphnoretin,belonging to coumarin compounds,is the main active ingredient of Wikstroemia indica,and has anti-inflammatory,anti-depression,anti-tumor and other pharmacological activities.This article reviews the extraction and purification process,content determination methods and pharmacological activity of daphnoretin,in order to provide a theoretical reference for optimization of purification process,improvement of content determination technique and further clinical application of daphnoretin.展开更多
基金National Key Scientific Project for New Drug Discovery and Development(Grant No.2009ZX09301-012)
文摘A sensitive RP-HPLC-UV method has been developed and validated for the quantification of daphnoretin in rat plasma. Daphnoretin was extracted from rat plasma by protein precipitation and liquid-liquid extraction. Separation was performed on a Diamonsil C18 column （200 mm× 4.6 mm, 5 μm） with a mobile phase of methanol-20 mmol/L ammonium acetate （adjusted to pH 3.2 with acetic acid, 42：58, v/v） at a flow rate of 1.0 mL/min. The UV detector was set at 345 nm and column temperature was set at 40 ℃. The calibration curves were linear over the concentration range of 0.020-2.00 ~tg/mL, The lower limit of quantification （LLOQ） of daphnoretin in rat plasma was 0.020 μg/mL. The intra- and inter-day relative standard deviation （RSD） for measurement of quality control （QC） samples （0.050, 0.200 and 1.60 μg/mL） ranged from 5.0%-10.6%. Relative error （RE） was from ±（1.2%-2.5%）. The validated method was used successfully in a pharmacokinetic study of daphnoretin in rats after intraperitoneal injection.
基金Supported by Central Government Supports Local College Reform and Development Fund Talent Training Projects(2020GSP16)。
文摘Daphnoretin,belonging to coumarin compounds,is the main active ingredient of Wikstroemia indica,and has anti-inflammatory,anti-depression,anti-tumor and other pharmacological activities.This article reviews the extraction and purification process,content determination methods and pharmacological activity of daphnoretin,in order to provide a theoretical reference for optimization of purification process,improvement of content determination technique and further clinical application of daphnoretin.
