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Year : 2017  |  Volume : 13  |  Issue : 52  |  Page : 822-827

Expression of hepatic cytochrome P450s in rats administered with Guibi-tang, a traditional herbal formula

1 K-herb Research Center, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
2 KM Convergence Research Division, Korea Institute of Oriental Medicine; Korean Medicine Life Science, University of Science and Technology, Daejeon, Republic of Korea

Correspondence Address:
Soo-Jin Jeong
KM Convergence Research Division, Korea Institute of Oriental Medicine, 1672 Yuseong-Daero, Yuseong-Gu, Daejeon 34054
Republic of Korea
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0973-1296.224327

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Objective: The aim of this study was to investigate the possible herb-drug interactions between the traditional herbal formula Guibi-tang (GBT; Guipi-tang, Kihi-to) and conventional drugs. Materials and Methods: GBT was orally administered to either male or female Sprague Dawley (SD) rats once daily at doses of 1000, 2000, or 5000 mg/kg/day for 13 weeks. The messenger ribonucleic acid (mRNA) expression of drug-metabolizing enzyme cytochrome P450 isozymes (cytochrome P450s; CYP1A1, 1A2, 2B1/2, 2C11, 2E1, 3A1, 3A2, and 4A1) was analyzed in hepatic tissues by reverse transcription-polymerase chain reaction. Results: Repeated oral administration of GBT did not significantly influence the mRNA expression of hepatic CYP1A1, 1A2, 2B1/2, 2C11, 2E1, 3A1, 3A2, and 4A1 in male rats. By contrast, in female rats, the mRNA expression of hepatic CYP1A2 and 2B1/2 was significantly increased by repeated GBT treatment. Conclusion: Our findings indicate that caution is required in females when GBT is taken concomitantly with conventional drugs metabolized by CYP1A2 or 2B1/2. Our results provide information regarding the safety and effectiveness of GBT for clinical use. Abbreviations used: CYP450: Cytochrome P450s, GBT: Guibi-tang, SD: Sprague Dawley, HPLC: High-performance liquid chromatography, OECD: Organization for Economic Cooperation and Development, RNA: Ribonucleic acid, RT-PCR: Reverse transcription-polymerase chain reaction, GADPH: Glyceraldehyde-3-phosphate dehydrogenase.

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