Abstract
Background and Objectives
Rhubarb anthraquinones contain five main components, that is, rhein, emodin, aloe-emodin, chrysophanol, and physcion, which demonstrate good therapeutic effects on nonalcoholic fatty liver disease (NAFLD). However, research on its pharmacokinetics in NAFLD remains lacking. This study aimed to investigate the pharmacokinetic differences of rhubarb anthraquinones in normal and NAFLD rats.
Methods
This study developed an NAFLD rat model by high-fat diet feeding for 6 weeks. Normal and NAFLD groups were orally administered different rhubarb anthraquinones doses (37.5, 75, and 150 mg/kg). The concentration of the rhein, emodin, aloe-emodin, chrysophanol, and physcion in plasma was determined by high-performance liquid chromatography–ultraviolet.
Results
The results revealed significant differences in pharmacokinetic behavior between normal and NAFLD rats. Compared with normal rats, NAFLD rats demonstrated significantly increased maximum plasma concentration (Cmax) and area under the plasma concentration–time curve (AUC0 → ∞) of rhubarb anthraquinones (P < 0.05), as well as significantly prolonged time to reach maximum plasma concentration (Tmax), terminal elimination half-life (t1/2), and mean residence time (MRT) of rhubarb anthraquinones (P < 0.05).
Conclusions
This study indicates significant differences in the pharmacokinetics of rhubarb anthraquinones between the physiological and NAFLD states of rats. Rhubarb anthraquinone demonstrated a longer retention time and slower absorption rate in NAFLD rats and exhibited higher bioavailability and peak concentration. This finding provides important information for guiding the clinical use of rhubarb anthraquinones under pathological conditions.
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Author Contributions
Fang Zhang and Xiaohong Gong conducted the experiments. Fang Zhang and Xiaohong Gong wrote the manuscript and prepared the figures. Fang Zhang, Rui Wu, Yanfang Liu, and Shu Dai conducted the sample collection and data analysis. Yunxia Li conceived the study.
Funding
This study was supported by National Natural Science Foundation of China (grant nos. 82004052, 81891012 and U19A2010), Postdoctoral Science Foundation (grant no. 2021M692327), Sichuan Province Science and Technology Support Program (nos. 2021JDRC0041 and 22ZYZYTS0071), Innovation Team and Talents Cultivation Program of National Administration of Traditional Chinese Medicine (no. ZYYCXTD-D-202209).
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The authors (Fang Zhang, Rui Wu, Yanfang Liu, Shu Dai, Xiaohong Gong, Yunxia Li) declare no conflicts of interest.
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All animal experiments were conducted strictly in accordance with ethical guidelines approved by the Animal Ethical Committee of Chengdu University of Traditional Chinese Medicine and handled according to the Management and Experimental Guidelines for Laboratory Animals of Chengdu University of Traditional Chinese Medicine (permit number: SYXK 2020-124, approval date: 04-12-2020). All institutional and national guidelines for the care of the laboratory animals were followed.
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Zhang, F., Wu, R., Liu, Y. et al. Comparative Pharmacokinetic Study of Rhubarb Anthraquinones in Normal and Nonalcoholic Fatty Liver Disease Rats. Eur J Drug Metab Pharmacokinet 49, 111–121 (2024). https://doi.org/10.1007/s13318-023-00875-z
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DOI: https://doi.org/10.1007/s13318-023-00875-z