Abstract
UDP-glucuronosyltransferase (UDP) catalyzes a broad spectrum of endobiotic and xenobiotics. It is the isoform of the UGT1 family, which are made from the complex gene locus by an alternative combination of one of the unique first exons with the commonly used exons. UDP is believed to be involved in cellular activity and signaling process associated with detoxification. In this study, rats were orally administered with 18β-glycyrrhetinic acid (GA) for four weeks before rats were sacrificed. The mRNA was extracted from the liver and cDNA was prepared by reverse transcription method. By PCR and Northern blot analysis, UGT1A8 mRNA level was found to be increased in the treatment group (P < 0.05). The results showed that the mRNA expression of UGT1A8 could be induced both by GA and the licorice extract. GA was identified to be the active component of the aqueous extract of licorice responsible for induction of UGT1A8 in the rat liver. The results suggest a transcriptional control of the UGT1A8 synthesis can be modulated by phytochemicals in the rat liver. The increased UDP activity could enhance detoxification of toxicants.
Keywords: UGT1A8, induction, transcription, expression, 18β-glycyrrhetinic acid.
Protein & Peptide Letters
Title:18β-glycyrrhetinic Acid Induces UDP-glucuronosyltransferase in Rats
Volume: 20 Issue: 12
Author(s): Kai Woo Lee and Wing Shing Ho
Affiliation:
Keywords: UGT1A8, induction, transcription, expression, 18β-glycyrrhetinic acid.
Abstract: UDP-glucuronosyltransferase (UDP) catalyzes a broad spectrum of endobiotic and xenobiotics. It is the isoform of the UGT1 family, which are made from the complex gene locus by an alternative combination of one of the unique first exons with the commonly used exons. UDP is believed to be involved in cellular activity and signaling process associated with detoxification. In this study, rats were orally administered with 18β-glycyrrhetinic acid (GA) for four weeks before rats were sacrificed. The mRNA was extracted from the liver and cDNA was prepared by reverse transcription method. By PCR and Northern blot analysis, UGT1A8 mRNA level was found to be increased in the treatment group (P < 0.05). The results showed that the mRNA expression of UGT1A8 could be induced both by GA and the licorice extract. GA was identified to be the active component of the aqueous extract of licorice responsible for induction of UGT1A8 in the rat liver. The results suggest a transcriptional control of the UGT1A8 synthesis can be modulated by phytochemicals in the rat liver. The increased UDP activity could enhance detoxification of toxicants.
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Cite this article as:
Lee Woo Kai and Ho Shing Wing, 18β-glycyrrhetinic Acid Induces UDP-glucuronosyltransferase in Rats, Protein & Peptide Letters 2013; 20 (12) . https://dx.doi.org/10.2174/092986652012131112124033
DOI https://dx.doi.org/10.2174/092986652012131112124033 |
Print ISSN 0929-8665 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5305 |
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