An LC-MS/MS method for the simultaneous determination of lycorine and galanthamine in rat plasma and its application to pharmacokinetic study of Lycoris radiata extract in rats / 华中科技大学学报(医学)(英德文版)
Journal of Huazhong University of Science and Technology (Medical Sciences)
; (6): 861-868, 2014.
Article
in En
| WPRIM
| ID: wpr-331132
Responsible library:
WPRO
ABSTRACT
A rapid, sensitive, and selective liquid chromatography-tandem mass spectrometry was developed for the simultaneous determination of lycorine and galanthamine, two major constituents in Lycoris radiata extract, in rat plasma. Liquid-liquid extraction with ethyl ether was carried out using diphenhydramine as the internal standard. The two bioactive alkaloids were separated on a Zorbax SB-C18 reserved-phase column (150 mm × 4.6 mm, i.d., 5 μm) by gradient elution using a mobile phase consisting of methanol with 0.1% formic acid (A) and water with 0.1% formic acid (B) at a flow rate of 0.6 mL/min. All analytes showed good linearity over a wide concentration range (r (2)>0.99) and the lower limit of quantification was 3.00 ng/mL for each analyte. The average extraction recovery of the analytes from rat plasma was more than 82.15%, and the intra-day and inter-day accuracy and precision of the assay were less than 12.6%. The validated method was successfully applied to monitoring the concentrations and pharmacokinetic studies of two Amaryllidaceous alkaloids in rat plasma after an oral administration of Lycoris radiata extract.
Full text:
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Index:
WPRIM
Main subject:
Parasympathomimetics
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Pharmacology
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Phenanthridines
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Pharmacokinetics
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Plant Extracts
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Chemistry
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Chromatography, Liquid
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Rats, Wistar
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Lycoris
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Amaryllidaceae Alkaloids
Limits:
Animals
Language:
En
Journal:
Journal of Huazhong University of Science and Technology (Medical Sciences)
Year:
2014
Type:
Article