1. QiShenYiQi pills, a Chinese patent medicine, increase bioavailability of atorvastatin by inhibiting Mrp2 expression in rats.
- Author
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Ding C, Li Y, Li X, Meng L, Fu R, Wang X, Li Y, Ma Y, and Dong Z
- Subjects
- Animals, Area Under Curve, Biological Availability, Chromatography, High Pressure Liquid, Hydroxymethylglutaryl-CoA Reductase Inhibitors pharmacokinetics, Ileum metabolism, Male, Rats, Rats, Sprague-Dawley, Tandem Mass Spectrometry, ATP-Binding Cassette Transporters genetics, Atorvastatin pharmacokinetics, Drugs, Chinese Herbal pharmacology, Herb-Drug Interactions
- Abstract
Context: Atorvastatin (ATV) and QiShenYiQi pills (QSYQ), a Chinese patent medicine, are often co-prescribed to Chinese cardiovascular patients. The effects of QSYQ on the pharmacokinetics of ATV have not been studied., Objective: We investigated the influence of QSYQ on the pharmacokinetics of ATV and its metabolites upon oral or intravenous administration of ATV to rats., Materials and Methods: Sprague-Dawley rats ( n = 5/group) were pre-treated with oral QSYQ (675 mg/kg) or vehicle control for 7 days and then orally administrated ATV (10 mg/kg) or intravenously administrated ATV (2 mg/kg). Serum concentrations of ATV and metabolites were determined by ultra-high performance liquid chromatography tandem mass spectrometry. Expression of metabolic enzymes and transporters in jejunum and ileum were measured by quantitative real-time PCR and Western blot., Results: QSYQ resulted in an increase of AUC
0-12 h of ATV from 226.67 ± 42.11 to 408.70 ± 161.75 ng/mL/h and of Cmax of ATV from 101.46 ± 26.18 to 198.00 ± 51.69 ng/mL and in an increased of para- hydroxy atorvastatin from 9.07 ± 6.20 to 23.10 ± 8.70 ng/mL in rats administered ATV orally. No change was observed in rats treated intravenously. The expression of multidrug resistance-associated protein 2 mRNA and protein decreased in ileum, and the mRNA of P-glycoprotein decreased in jejunum, though no change in protein expression was found., Discussion and Conclusions: QSYQ increased bioavailability of ATV administered orally through inhibiting the expression of Mrp2 in ileum. Clinicians should pay close attention to potential drug-drug interactions between ATV and QSYQ.- Published
- 2022
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