Simultaneous determination of four phytoecdysteroids by LC-MS/MS: application to a comparative pharmacokinetic study in normal and adjuvant arthritis rats after oral administration of C. officinalis Kuan phytoecdysteroids extract.
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引用次数: 0
Abstract
C. officinalis Kuan is the dry root of Cyathula officinalis Kuan. Clinically, it is used for fall and flutter injury, rheumatism and arthralgia. Phytoecdysteroids have significant anti-inflammatory effects, and the phytoecdysteroids present in C. officinalis Kuan exhibit potential for treating rheumatoid arthritis.This study first developed a selective, accurate and efficient LC-MS/MS method for 12-day pharmacokinetic studies regarding the simultaneous determination of cyasterone, 25-epi-28-epi-cyasterone, precyasterone and capitasterone from C. officinalis Kuan phytoecdysteroids extract in normal and adjuvant arthritis rats.An Agilent Eclipse Plus C18 RRHD column (1.8 µm, 50mm × 2.1 mm) with a gradient mobile phase consisting of water (A) and acetonitrile (B) was used for analysis. The mass analysis was performed in an Agilent 6430 QQQ-MS mass spectrometer with positive mode multiple reaction monitoring (MRM).The results indicated that the AUC0-t and AUC0-∞ values of the four phytoecdysteroids in adjuvant arthritis rats were different from those in normal rats on the first day, which could provide a helpful reference for pharmacological and toxicological studies, as well as clinical applications of C. officinalis Kuan in the treatment of rheumatoid arthritis.
期刊介绍：
Xenobiotica covers seven main areas, including:General Xenobiochemistry, including in vitro studies concerned with the metabolism, disposition and excretion of drugs, and other xenobiotics, as well as the structure, function and regulation of associated enzymesClinical Pharmacokinetics and Metabolism, covering the pharmacokinetics and absorption, distribution, metabolism and excretion of drugs and other xenobiotics in manAnimal Pharmacokinetics and Metabolism, covering the pharmacokinetics, and absorption, distribution, metabolism and excretion of drugs and other xenobiotics in animalsPharmacogenetics, defined as the identification and functional characterisation of polymorphic genes that encode xenobiotic metabolising enzymes and transporters that may result in altered enzymatic, cellular and clinical responses to xenobioticsMolecular Toxicology, concerning the mechanisms of toxicity and the study of toxicology of xenobiotics at the molecular levelXenobiotic Transporters, concerned with all aspects of the carrier proteins involved in the movement of xenobiotics into and out of cells, and their impact on pharmacokinetic behaviour in animals and manTopics in Xenobiochemistry, in the form of reviews and commentaries are primarily intended to be a critical analysis of the issue, wherein the author offers opinions on the relevance of data or of a particular experimental approach or methodology
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