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Li P, Maitra D, Kuo N, Kwan R, Song Y, Tang W, Chen L, Xie Q, Liu L, Omary MB. PP2 protects from keratin mutation-associated liver injury and filament disruption via SRC kinase inhibition in male but not female mice. Hepatology 2023; 77:144-158. [PMID: 35586977 DOI: 10.1002/hep.32574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 05/04/2022] [Accepted: 05/05/2022] [Indexed: 02/03/2023]
Abstract
BACKGROUND AND AIMS Hepatocyte keratin polypeptides 8/18 (K8/K18) are unique among intermediate filaments proteins (IFs) in that their mutation predisposes to, rather than causes, human disease. Mice that overexpress human K18 R90C manifest disrupted hepatocyte keratin filaments with hyperphosphorylated keratins and predisposition to Fas-induced liver injury. We hypothesized that high-throughput screening will identify compounds that protect the liver from mutation-triggered predisposition to injury. APPROACH AND RESULTS Using A549 cells transduced with a lentivirus K18 construct and high-throughput screening, we identified the SRC-family tyrosine kinases inhibitor, PP2, as a compound that reverses keratin filament disruption and protects from apoptotic cell death caused by K18 R90C mutation at this highly conserved arginine. PP2 also ameliorated Fas-induced apoptosis and liver injury in male but not female K18 R90C mice. The PP2 male selectivity is due to its lower turnover in male versus female livers. Knockdown of SRC but not another kinase target of PP2, protein tyrosine kinase 6, in A549 cells abrogated the hepatoprotective effect of PP2. Phosphoproteomic analysis and validation showed that the protective effect of PP2 associates with Ser/Thr but not Tyr keratin hypophosphorylation, and differs from the sex-independent effect of the Ser/Thr kinase inhibitor PKC412. Inhibition of RAF kinase, a downstream target of SRC, by vemurafenib had a similar protective effect to PP2 in A549 cells and male K18 R90C mice. CONCLUSIONS PP2 protects, in a male-selective manner, keratin mutation-induced mouse liver injury by inhibiting SRC-triggered downstream Ser/Thr phosphorylation of K8/K18, which is phenocopied by RAF kinase inhibitor vemurafenib. The PP2/vemurafenib-associated findings, and their unique mechanisms of action, further support the potential role of select kinase inhibition as therapeutic opportunities for keratin and other IF-associated human diseases.
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Affiliation(s)
- Pei Li
- Robert Wood Johnson Medical School , Rutgers University , New Brunswick , New Jersey , USA
- Center for Advanced Biotechnology & Medicine , Rutgers University , Piscataway , New Jersey , USA
| | - Dhiman Maitra
- Robert Wood Johnson Medical School , Rutgers University , New Brunswick , New Jersey , USA
- Center for Advanced Biotechnology & Medicine , Rutgers University , Piscataway , New Jersey , USA
- Early-Stage Method Development & Characterization Unit , Bristol Myers Squibb , New Brunswick , New Jersey , USA
| | - Ning Kuo
- Robert Wood Johnson Medical School , Rutgers University , New Brunswick , New Jersey , USA
- Center for Advanced Biotechnology & Medicine , Rutgers University , Piscataway , New Jersey , USA
| | - Raymond Kwan
- Robert Wood Johnson Medical School , Rutgers University , New Brunswick , New Jersey , USA
- Center for Advanced Biotechnology & Medicine , Rutgers University , Piscataway , New Jersey , USA
| | - Yang Song
- Department of Radiation Oncology , Nanfang Hospital, Southern Medical University , Guangzhou , People's Republic of China
| | - Weiliang Tang
- Department of Infectious Diseases , Ruijin Hospital, Jiao Tong University School of Medicine , Shanghai , People's Republic of China
| | - Lu Chen
- Department of Infectious Diseases , Ruijin Hospital, Jiao Tong University School of Medicine , Shanghai , People's Republic of China
| | - Qing Xie
- Department of Infectious Diseases , Ruijin Hospital, Jiao Tong University School of Medicine , Shanghai , People's Republic of China
| | - Li Liu
- Hepatology Unit and Department of Infectious Diseases, Nanfang Hospital , Southern Medical University , Guangzhou , People's Republic of China
| | - M Bishr Omary
- Robert Wood Johnson Medical School , Rutgers University , New Brunswick , New Jersey , USA
- Center for Advanced Biotechnology & Medicine , Rutgers University , Piscataway , New Jersey , USA
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Sharifi-Rad J, Herrera-Bravo J, Kamiloglu S, Petroni K, Mishra AP, Monserrat-Mesquida M, Sureda A, Martorell M, Aidarbekovna DS, Yessimsiitova Z, Ydyrys A, Hano C, Calina D, Cho WC. Recent advances in the therapeutic potential of emodin for human health. Biomed Pharmacother 2022; 154:113555. [PMID: 36027610 DOI: 10.1016/j.biopha.2022.113555] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/04/2022] [Accepted: 08/14/2022] [Indexed: 01/01/2023] Open
Abstract
Emodin (1,3,8-trihydroxy-6-methylanthraquinone) is a bioactive compound, a natural anthraquinone aglycone, present mainly in herbaceous species of the families Fabaceae, Polygonaceae and Rhamnaceae, with a physiological role in protection against abiotic stress in vegetative tissues. Emodin is mainly used in traditional Chinese medicine to treat sore throats, carbuncles, sores, blood stasis, and damp-heat jaundice. Pharmacological research in the last decade has revealed other potential therapeutic applications such as anticancer, neuroprotective, antidiabetic, antioxidant and anti-inflammatory. The present study aimed to summarize recent studies on bioavailability, preclinical pharmacological effects with evidence of molecular mechanisms, clinical trials and clinical pitfalls, respectively the therapeutic limitations of emodin. For this purpose, extensive searches were performed using the PubMed/Medline, Scopus, Google scholar, TRIP database, Springer link, Wiley and SciFinder databases as a search engines. The in vitro and in vivo studies included in this updated review highlighted the signaling pathways and molecular mechanisms of emodin. Because its bioavailability is low, there are limitations in clinical therapeutic use. In conclusion, for an increase in pharmacotherapeutic efficacy, future studies with carrier molecules to the target, thus opening up new therapeutic perspectives.
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Affiliation(s)
| | - Jesús Herrera-Bravo
- Departamento de Ciencias Básicas, Facultad de Ciencias, Universidad Santo Tomas, Chile; Center of Molecular Biology and Pharmacogenetics, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco 4811230, Chile
| | - Senem Kamiloglu
- Department of Food Engineering, Faculty of Agriculture, Bursa Uludag University, 16059 Gorukle, Bursa, Turkey; Science and Technology Application and Research Center (BITUAM), Bursa Uludag University, 16059 Gorukle, Bursa, Turkey
| | - Katia Petroni
- Dipartimento di Bioscienze, Università degli Studi di Milano, via Celoria 26, 20133 Milano, Italy.
| | - Abhay Prakash Mishra
- Department of Pharmaceutical Chemistry, H.N.B. Garhwal (A Central) University, Srinagar Garhwal, Uttarakhand 246174, India.
| | - Margalida Monserrat-Mesquida
- Research Group in Community Nutrition and Oxidative Stress, University Research Institute of Health and Health Research Institute of Balearic Islands (IdISBa), University of the Balearic Islands-IUNICS, 07122 Palma de Mallorca, Spain; CIBER Physiopathology of Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain.
| | - Antoni Sureda
- Research Group in Community Nutrition and Oxidative Stress, University Research Institute of Health and Health Research Institute of Balearic Islands (IdISBa), University of the Balearic Islands-IUNICS, 07122 Palma de Mallorca, Spain; CIBER Physiopathology of Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain.
| | - Miquel Martorell
- Departamento de Ciencias Básicas, Facultad de Ciencias, Universidad Santo Tomas, Chile; Department of Nutrition and Dietetics, Faculty of Pharmacy, and Centre for Healthy Living, University of Concepción, 4070386 Concepción, Chile.
| | - Dossymbetova Symbat Aidarbekovna
- Almaty Tecnological University, Kazakh-Russian Medical University, Almaty 050012, str. Tole bi 100, Str. Torekulova 71, Kazakhstan.
| | - Zura Yessimsiitova
- Department of Biodiversity and Bioresource, Al-Farabi Kazakh National University, al-Farabi av. 71, 050040 Almaty, Kazakhstan.
| | - Alibek Ydyrys
- Biomedical Research Centre, Al-Farabi Kazakh National University, al-Farabi av. 71, 050040 Almaty, Kazakhstan.
| | - Christophe Hano
- Department of Biological Chemistry, University of Orleans, Eure et Loir Campus, 28000 Chartres, France.
| | - Daniela Calina
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania.
| | - William C Cho
- Department of Clinical Oncology, Queen Elizabeth Hospital, Kowloon, Hong Kong.
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Xie C, Hu W, Gan L, Fu B, Zhao X, Tang D, Liao R, Ye L. Sulfation and Its Effect on the Bioactivity of Magnolol, the Main Active Ingredient of Magnolia Officinalis. Metabolites 2022; 12:metabo12090870. [PMID: 36144273 PMCID: PMC9505486 DOI: 10.3390/metabo12090870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/12/2022] [Accepted: 09/12/2022] [Indexed: 11/16/2022] Open
Abstract
Magnolol, the main active ingredient of Magnolia officinalis, has been reported to display anti-inflammatory activity. Sulfation plays an important role in the metabolism of magnolol. The magnolol sulfated metabolite was identified by the ultra-performance liquid chromatography to quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS) and a proton nuclear magnetic resonance (1H-NMR). The magnolol sulfation activity of seven major recombinant sulfotransferases (SULTs) isoforms (SULT1A1*1, SULT1A1*2, SULT1A2, SULT1A3, SULT1B1, SULT1E1, and SULT2A1) was analyzed. The metabolic profile of magnolol was investigated in liver S9 fractions from human (HLS9), rat (RLS9), and mouse (MLS9). The anti-inflammatory effects of magnolol and its sulfated metabolite were evaluated in RAW264.7 cells stimulated by lipopolysaccharide (LPS). Magnolol was metabolized into a mono-sulfated metabolite by SULTs. Of the seven recombinant SULT isoforms examined, SULT1B1 exhibited the highest magnolol sulfation activity. In liver S9 fractions from different species, the CLint value of magnolol sulfation in HLS9 (0.96 µL/min/mg) was similar to that in RLS9 (0.99 µL/min/mg) but significantly higher than that in MLS9 (0.30 µL/min/mg). Magnolol and its sulfated metabolite both significantly downregulated the production of inflammatory mediators (IL-1β, IL-6 and TNF-α) stimulated by LPS (p < 0.001). These results indicated that SULT1B1 was the major enzyme responsible for the sulfation of magnolol and that the magnolol sulfated metabolite exhibited potential anti-inflammatory effects.
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Affiliation(s)
- Cong Xie
- Clinical Pharmacy Center, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Wanyu Hu
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Lili Gan
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Bingxuan Fu
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Xiaojie Zhao
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Dafu Tang
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Rongxin Liao
- TCM-Integrated Hospital, Southern Medical University, Guangzhou 510315, China
- Correspondence: (R.L.); (L.Y.)
| | - Ling Ye
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
- TCM-Integrated Hospital, Southern Medical University, Guangzhou 510315, China
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
- Correspondence: (R.L.); (L.Y.)
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P14-10 Metabolism of two anthraquinone dyes obtained from Cortinarius sanguineus. Toxicol Lett 2022. [DOI: 10.1016/j.toxlet.2022.07.575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Xu Z, Hou Y, Sun J, Zhu L, Zhang Q, Yao W, Fan X, Zhang K, Piao JG, Wei Y. Deoxycholic acid-chitosan coated liposomes combined with in situ colonic gel enhances renal fibrosis therapy of emodin. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 101:154110. [PMID: 35487039 DOI: 10.1016/j.phymed.2022.154110] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 03/30/2022] [Accepted: 04/14/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Renal fibrosis is the final common pathological feature of various chronic kidney diseases (CKD). Despite recent advances, development of new treatments strategy is needed. Emodin (EMO), an important ingredient of Chinese medicine, rhubarb (Polygonaceae Rheum palmatum l.), has been reported to inhibit the development of renal fibrosis effectively. However, the poor oral bioavailability of EMO and the insufficient monotherapy therapy compromise its efficacy. PURPOSE In order to enhance renal fibrosis therapy of emodin, an innovative combination therapy based on deoxycholic acid-chitosan coated liposomes (DCS-Lips) and in situ colonic gel (IGE) was developed. METHODS For one, the DCS-Lips were prepared via electrostatic interaction by mixing anionic conventional Lips with cationic DCS, deoxycholic acid conjugated on the backbone of chitosan. The cellular uptake of FITC-labeled DCS-Lips in Caco-2 cell monolayer was evaluated by CLSM and flow cytometry, respectively. Permeability study was carried out using Caco-2 cell monolayer. For another, EMO-loaded in situ colonic gel (EMO-IGE) was prepared by mixing EMO nanosuspensions and plain in situ gel, which was obtained by the cold method. The EMO-IGE was assessed for morphology, gelation temperature, viscosity and in vitro drug release. Finally, the therapeutic efficacy of the combination strategy, oral DCS-Lips formulations and in situ colonic gel, was evaluated in unilateral ureteral obstruction (UUO) rat model. Additionally, 16S rDNA sequencing was performed on rats faces to investigate whether the combination strategy improves the microbial dysbiosis in UUO rats. RESULTS The prepared DCS-Lips produced small, uniformly sized nanoparticles, and significantly enhanced the cellular uptake and in vitro permeability of EMO compared to non-coated liposomes. Moreover, the EMO-IGE was characterized by short gelation time, optimal gelling temperature, and excellent viscosity. In UUO model, the combination of DCS-Lips (gavage) and IGE (enema) attenuated renal fibrosis effectively. The results of 16S rDNA sequencing illustrated that IGE could restore the gut microbial dysbiosis of UUO rats. CONCLUSION Overall, the combination of DCS-Lips and EMO-IGE alleviated renal fibrosis effectively, resulting from the improved oral bioavailability of EMO by DCS-Lips and the restoration of gut microbiota by EMO-IGE, thus, presenting an innovative and promising potential for renal fibrosis treatment.
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Affiliation(s)
- Zhishi Xu
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 311402, China
| | - Yu Hou
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 311402, China
| | - Jiang Sun
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 311402, China
| | - Lin Zhu
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 311402, China
| | - Qibin Zhang
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 311402, China
| | - Wenjie Yao
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 311402, China
| | - Xudong Fan
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 311402, China
| | - Ke Zhang
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 311402, China
| | - Ji-Gang Piao
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 311402, China
| | - Yinghui Wei
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 311402, China.
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Cheng W, Wu S, Yuan Z, Hu W, Yu X, Kang N, Wang Q, Zhu M, Xia K, Yang W, Kang C, Zhang S, Li Y. Pharmacokinetics, Tissue Distribution, and Excretion Characteristics of a Radix Polygoni Multiflori Extract in Rats. Front Pharmacol 2022; 13:827668. [PMID: 35264960 PMCID: PMC8899820 DOI: 10.3389/fphar.2022.827668] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 01/21/2022] [Indexed: 01/10/2023] Open
Abstract
Although progress has been achieved in the pharmacological activity and toxicity of Radix Polygoni Multiflori (RPM), the chemical basis of its toxicity is still unclear. Here, we performed a multicompound pharmacokinetic analysis and investigated the tissue distribution and excretion characteristics of RPM components after oral administration in rats. The findings demonstrated that the active ingredients of the RPM extract were quickly absorbed after oral administration, with high exposure levels of emodin, 2,3,5,4′-teterahydroxystilbene-2-O-β-D-glucoside (TSG), citreorosein, torachrysone-8-O-glucoside (TG), emodin-8-O-β-D-glucoside (EG), and physcion-8-O-β-D-glucoside (PG). The tissue distributions of emodin, TSG, TG, EG, and PG were high in the liver and kidney. These components were the key contributors to the effectiveness and toxicity of RPM on the liver and kidney. Most of the active ingredients were mainly excreted through feces and bile, while a few were converted into other products in the body and excreted through urine and feces.
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Affiliation(s)
- Wenhao Cheng
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing, China.,Center for DMPK Research of Herbal Medicines, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Siyang Wu
- Center for DMPK Research of Herbal Medicines, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Zheng Yuan
- Center for DMPK Research of Herbal Medicines, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Weiyu Hu
- Department of Hepatobiliary Pancreatic Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xin Yu
- Center for DMPK Research of Herbal Medicines, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Nianxin Kang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Qiutao Wang
- School of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Mingying Zhu
- Center for DMPK Research of Herbal Medicines, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Kexin Xia
- Center for DMPK Research of Herbal Medicines, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Wei Yang
- Center for DMPK Research of Herbal Medicines, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Chen Kang
- Center for DMPK Research of Herbal Medicines, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Shuofeng Zhang
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing, China
| | - Yingfei Li
- Center for DMPK Research of Herbal Medicines, Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
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Zheng Q, Li S, Li X, Liu R. Advances in the study of emodin: an update on pharmacological properties and mechanistic basis. Chin Med 2021; 16:102. [PMID: 34629100 PMCID: PMC8504117 DOI: 10.1186/s13020-021-00509-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 09/17/2021] [Indexed: 12/21/2022] Open
Abstract
Rhei Radix et Rhizoma, also known as rhubarb or Da Huang, has been widely used as a spice and as traditional herbal medicine for centuries, and is currently marketed in China as the principal herbs in various prescriptions, such as Da-Huang-Zhe-Chong pills and Da-Huang-Qing-Wei pills. Emodin, a major bioactive anthraquinone derivative extracted from rhubarb, represents multiple health benefits in the treatment of a host of diseases, such as immune-inflammatory abnormality, tumor progression, bacterial or viral infections, and metabolic syndrome. Emerging evidence has made great strides in clarifying the multi-targeting therapeutic mechanisms underlying the efficacious therapeutic potential of emodin, including anti-inflammatory, immunomodulatory, anti-fibrosis, anti-tumor, anti-viral, anti-bacterial, and anti-diabetic properties. This comprehensive review aims to provide an updated summary of recent developments on these pharmacological efficacies and molecular mechanisms of emodin, with a focus on the underlying molecular targets and signaling networks. We also reviewed recent attempts to improve the pharmacokinetic properties and biological activities of emodin by structural modification and novel material-based targeted delivery. In conclusion, emodin still has great potential to become promising therapeutic options to immune and inflammation abnormality, organ fibrosis, common malignancy, pathogenic bacteria or virus infections, and endocrine disease or disorder. Scientifically addressing concerns regarding the poor bioavailability and vague molecular targets would significantly contribute to the widespread acceptance of rhubarb not only as a dietary supplement in food flavorings and colorings but also as a health-promoting TCM in the coming years.
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Affiliation(s)
- Qi Zheng
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, 11 Bei San Huan Dong Lu, Beijing, 100029, China
| | - Shuo Li
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, 11 Bei San Huan Dong Lu, Beijing, 100029, China
| | - Xiaojiaoyang Li
- School of Life Sciences, Beijing University of Chinese Medicine, 11 Bei San Huan Dong Lu, Beijing, 100029, China
| | - Runping Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, 11 Bei San Huan Dong Lu, Beijing, 100029, China.
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Zhang T, He X, Sun L, Wang D, Zhang S, Mao J, Zhang F. Insight into the practical models for prediciting the essential role of the cytochrome P450-mediated biotransformation in emodin-associated hepatotoxicity. Toxicology 2021; 462:152930. [PMID: 34492313 DOI: 10.1016/j.tox.2021.152930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/23/2021] [Accepted: 09/02/2021] [Indexed: 10/20/2022]
Abstract
Emodin is widely present in Chinese herbs with broad application prospects, however, the conflicting reports of its hepatotoxicity have created a concern. It was therefore aimed to develop practical models to elucidate the outcome of CYP450 biotransformation on emodin. HepG2 and rat liver microsomes (RLM) coculture system was first utilized for prediction. It was found that emodin (35 μM)-mediated cytotoxicity was alleviated only when the cofactor of CYP450 NADPH (1 mM) was present. Similarly, both the pan-CYP450 inhibitor 1-aminobenzotriazole (ABT) (2 mM) and the heat-inactivated liver microsomes completely abolished the protective effect of RLM (0.75 mg/mL). Consistently, ABT significantly increased the toxicity of emodin in primary rat liver cells. Along similar lines, only the monohydroxylation metabolite M3 that accounted for neglectable amount of the whole metabolites showed similar toxicity to emodin, both M1 and M2 exhibited far less toxcity than emodin in THLE-2 cells. In vivo study further supported that ABT (50 mg/kg, s.c.) aggravated the hepatotoxicity of emodin (80 mg/kg, i.p.) on mice, as emodin treatment only mediated slight increase of liver index and histological score likely due to the metabolic detoxication of emodin, whereas ABT co-administration resulted in severe liver injury as reflected by the dramatic increase of the liver index value, serum ALT and AST levels, and histopathological score. Moreover, it was explored that ROS generation together with the electrophilicity of emodin contributed to its hepatotoxicity. These findings not only provided a clear evidence of the metabolic detoxification of emodin, but also shed a light on the hepatotoxic mechanisms of emodin, which would lay a solid foundation for the rational application of emodin in the future.
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Affiliation(s)
- Tingting Zhang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, Liaoning, 110016, China
| | - Xiaomei He
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, Liaoning, 110016, China
| | - Lanlan Sun
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, Liaoning, 110016, China
| | - Dong Wang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, Liaoning, 110016, China
| | - Shuya Zhang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, Liaoning, 110016, China
| | - Jianping Mao
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, Liaoning, 110016, China
| | - Fengjiao Zhang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, Liaoning, 110016, China.
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Tuli HS, Aggarwal V, Tuorkey M, Aggarwal D, Parashar NC, Varol M, Savla R, Kaur G, Mittal S, Sak K. Emodin: A metabolite that exhibits anti-neoplastic activities by modulating multiple oncogenic targets. Toxicol In Vitro 2021; 73:105142. [DOI: 10.1016/j.tiv.2021.105142] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/11/2021] [Accepted: 03/09/2021] [Indexed: 12/19/2022]
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10
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Wang D, Wang XH, Yu X, Cao F, Cai X, Chen P, Li M, Feng Y, Li H, Wang X. Pharmacokinetics of Anthraquinones from Medicinal Plants. Front Pharmacol 2021; 12:638993. [PMID: 33935728 PMCID: PMC8082241 DOI: 10.3389/fphar.2021.638993] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 02/03/2021] [Indexed: 12/23/2022] Open
Abstract
Anthraquinones are bioactive natural products, some of which are active components in medicinal medicines, especially Chinese medicines. These compounds exert actions including purgation, anti-inflammation, immunoregulation, antihyperlipidemia, and anticancer effects. This study aimed to review the pharmacokinetics (PKs) of anthraquinones, which are importantly associated with their pharmacological and toxicological effects. Anthraquinones are absorbed mainly in intestines. The absorption rates of free anthraquinones are faster than those of their conjugated glycosides because of the higher liposolubility. A fluctuation in blood concentration and two absorption peaks of anthraquinones may result from the hepato-intestinal circulation, reabsorption, and transformation. Anthraquinones are widely distributed throughout the body, mainly in blood-flow rich organs and tissues, such as blood, intestines, stomach, liver, lung, kidney, and fat. The metabolic pathways of anthraquinones are hydrolysis, glycuronidation, sulfation, methylation/demethylation, hydroxylation/dehydroxylation, oxidation/reduction (hydrogenation), acetylation and esterification by intestinal flora and liver metabolic enzymes, among which hydrolysis, glycuronidation and sulfation are dominant. Of note, anthraquinones can be transformed into each other. The main excretion routes for anthraquinones are the kidney, recta, and gallbladder. Conclusion: Some anthraquinones and their glycosides, such as aloe-emodin, chrysophanol, emodin, physcion, rhein and sennosides, have attracted the most PK research interest due to their more biological activities and/or detectability. Anthraquinones are mainly absorbed in the intestines and are mostly distributed in blood flow-rich tissues and organs. Transformation into another anthraquinone may increase the blood concentration of the latter, leading to an increased pharmacological and/or toxicological effect. Drug-drug interactions influencing PK may provide insights into drug compatibility theory to enhance or reduce pharmacological/toxicological effects in Chinese medicine formulae and deserve deep investigation.
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Affiliation(s)
- Dongpeng Wang
- Laboratory of Chinese Herbal Pharmacology, Oncology Center, Renmin Hospital, Hubei University of Medicine, Shiyan, China.,Biomedical Research Institute, Hubei Key Laboratory of Wudang Local Chinese Medicine Research and School of Pharmacy, Hubei University of Medicine, Shiyan, China
| | - Xian-He Wang
- Laboratory of Chinese Herbal Pharmacology, Oncology Center, Renmin Hospital, Hubei University of Medicine, Shiyan, China
| | - Xiongjie Yu
- Laboratory of Chinese Herbal Pharmacology, Oncology Center, Renmin Hospital, Hubei University of Medicine, Shiyan, China
| | - Fengjun Cao
- Laboratory of Chinese Herbal Pharmacology, Oncology Center, Renmin Hospital, Hubei University of Medicine, Shiyan, China
| | - Xiaojun Cai
- Laboratory of Chinese Herbal Pharmacology, Oncology Center, Renmin Hospital, Hubei University of Medicine, Shiyan, China
| | - Ping Chen
- Laboratory of Chinese Herbal Pharmacology, Oncology Center, Renmin Hospital, Hubei University of Medicine, Shiyan, China
| | - Minglun Li
- Department of Radiation Oncology, University Hospital, LMU Munich, Munich, Germany
| | - Yibin Feng
- School of Chinese Medicine, The University of Hong Kong, Hong Kong, China
| | - Hongliang Li
- Laboratory of Chinese Herbal Pharmacology, Oncology Center, Renmin Hospital, Hubei University of Medicine, Shiyan, China.,Biomedical Research Institute, Hubei Key Laboratory of Wudang Local Chinese Medicine Research and School of Pharmacy, Hubei University of Medicine, Shiyan, China
| | - Xuanbin Wang
- Laboratory of Chinese Herbal Pharmacology, Oncology Center, Renmin Hospital, Hubei University of Medicine, Shiyan, China.,Biomedical Research Institute, Hubei Key Laboratory of Wudang Local Chinese Medicine Research and School of Pharmacy, Hubei University of Medicine, Shiyan, China.,Department of Radiation Oncology, University Hospital, LMU Munich, Munich, Germany
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11
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Li S, Yu Y, Bian X, Yao L, Li M, Lou YR, Yuan J, Lin HS, Liu L, Han B, Xiang X. Prediction of oral hepatotoxic dose of natural products derived from traditional Chinese medicines based on SVM classifier and PBPK modeling. Arch Toxicol 2021; 95:1683-1701. [PMID: 33713150 DOI: 10.1007/s00204-021-03023-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 03/04/2021] [Indexed: 12/17/2022]
Abstract
The risk of drug-induced liver injury (DILI) poses a major challenge for development of natural products derived from traditional Chinese medicines (NP-TCMs). It is urgent to find a new method for the safety assessment of the NP-TCMs. Recent study has reported an in vitro/in silico method to estimate the acceptable daily intake of hepatotoxic compounds using support vector machine (SVM) classifier and physiologically based pharmacokinetic (PBPK) modeling. However, this method is not suitable for estimating the dosing schedule of compounds which are administered in multiple daily doses. Thus, in this study, the method mentioned above was in particular optimized, and used to estimate the hepatotoxic plasma concentrations of 17 NP-TCMs. Additionally, the oral dosing schedules of the triptolide, emodin, matrine and oxymatrine were also predicted by the SVM classifier and PBPK modeling. The optimization included that: (1) in vitro cytotoxicity data of 28 training set compounds was optimized using benchmark concentrations (BMC) modeling; (2) AUC of the training set compound was used as the in vivo metric instead of Cmax to better reflect the total daily exposure of compounds which are administered in multiple daily doses; (3) using the mean AUC in plasma as in vivo metric and BMC value as in vitro metric could achieve the better toxicity separation index (0.962 vs. 0.938); (4) The TSI for Cmax and BMC values was 0.985 calculated in this study, and the results indicated that BMC modeling improved the separation performance. This optimized in vitro-in vivo extrapolation (IVIVE) workflow could extrapolate in vitro BMC to blood concentrations and the oral dosing schedule which are corresponding to certain risk of hepatotoxicity. The estimated safe dosing schedule of oxymatrine by this optimized method was close to the clinical recommended dosing regimen. The results indicate that the optimized method could be used to predict the dosing schedule of compounds administered in multiple daily doses, and our optimized workflow could be helpful for the safety assessment as well as the research and development on NP-TCMs.
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Affiliation(s)
- Size Li
- Department of Clinical Pharmacy and Pharmacy Administration, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Yiqun Yu
- Department of Pharmacy, Minhang Hospital, Fudan University, Shanghai, 201199, China
| | - Xiaolan Bian
- Department of Pharmacy, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 20025, China
| | - Li Yao
- Department of Clinical Pharmacy and Pharmacy Administration, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Min Li
- Department of Clinical Pharmacy and Pharmacy Administration, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Yan-Ru Lou
- Department of Clinical Pharmacy and Pharmacy Administration, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Jing Yuan
- Department of Clinical Pharmacy and Pharmacy Administration, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Hai-Shu Lin
- College of Pharmacy, Shenzhen Technology University, Shenzhen, Guangdong Province, 518118, China
| | - Lucy Liu
- Shanghai Qiangshi Information Technology Co., Ltd, Shanghai, China
| | - Bing Han
- Department of Pharmacy, Minhang Hospital, Fudan University, Shanghai, 201199, China
| | - Xiaoqiang Xiang
- Department of Clinical Pharmacy and Pharmacy Administration, School of Pharmacy, Fudan University, Shanghai, 201203, China.
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12
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Overview of Pharmacokinetics and Liver Toxicities of Radix Polygoni Multiflori. Toxins (Basel) 2020; 12:toxins12110729. [PMID: 33233441 PMCID: PMC7700391 DOI: 10.3390/toxins12110729] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 11/18/2020] [Accepted: 11/19/2020] [Indexed: 02/07/2023] Open
Abstract
Radix Polygoni Multiflori (RPM), a traditional Chinese medicine, has been used as a tonic and an anti-aging remedy for centuries. However, its safe and effective application in clinical practice could be hindered by its liver injury potential and lack of investigations on its hepatotoxicity mechanism. Our current review aims to provide a comprehensive overview and a critical assessment of the absorption, distribution, metabolism, excretion of RPM, and their relationships with its induced liver injury. Based on the well-reported intrinsic liver toxicity of emodin, one of the major components in RPM, it is concluded that its plasma and liver concentrations could attribute to RPM induced liver injury via metabolic enzymes alteration, hepatocyte apoptosis, bile acids homeostasis disruption, and inflammatory damage. Co-administered 2,3,5,4'-tetrahydroxystilbene-2-O-β-D-glucopyranoside in RPM and other drugs/herbs could further aggravate the hepatotoxicity of emodin via enhancing its absorption and inhibiting its metabolism. To ensure the safe clinical use of RPM, a better understanding of the toxicokinetics and effect of its co-occurring components or other co-administered drugs/herbs on the pharmacokinetics of emodin is warranted.
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13
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Wang D, Sun M, Zhang Y, Chen Z, Zang S, Li G, Li G, Clark AR, Huang J, Si L. Enhanced therapeutic efficacy of a novel colon-specific nanosystem loading emodin on DSS-induced experimental colitis. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2020; 78:153293. [PMID: 32777486 DOI: 10.1016/j.phymed.2020.153293] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 07/21/2020] [Accepted: 07/24/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Ulcerative colitis (UC) is an intricate enteric disease with a rising incidence that is closely related to mucosa-barrier destruction, gut dysbacteriosis, and immune disorders. Emodin (1,3,8-trihydroxy-6-methyl-9,10-anthraquinone, EMO) is a natural anthraquinone derivative that occurs in many Polygonaceae plants. Its multiple pharmacological effects, including antioxidant, immune-suppressive, and anti-bacteria activities, make it a promising treatment option for UC. However, its poor solubility, extensive absorption, and metabolism in the upper gastrointestinal tract may compromise its anti-colitis effects. PURPOSE EMO was loaded in a colon-targeted delivery system using multifunctional biomedical materials and the enhanced anti-colitis effect involving mucosa reconstruction was investigated in this study. METHODS EMO-loaded Poly (DL-lactide-co-glycolide)/EudragitⓇ S100/montmorillonite nanoparticles (EMO/PSM NPs) were prepared by a versatile single-step assembly approach. The colon-specific release behavior was characterized in vitro and in vivo, and the anti-colitis effect was evaluated in dextran sulfate sodium (DSS)-induced acute colitis in mice by weight loss, disease activity index (DAI) score, colon length, histological changes, and colitis biomarkers. The integrity of the intestinal mucosal barrier was evaluated through transwell co-culture model in vitro and serum zonulin-related tight junctions and mucin2 (MUC2) in vivo. RESULTS EMO/PSM NPs with a desirable hydrodynamic diameter (~ 235 nm) and negative zeta potential (~ -31 mV) could prevent the premature drug release (< 4% in the first 6 h in vitro) in the upper gastrointestinal tract (GIT) and boost retention in the lower GIT and inflamed colon mucosa in vivo. Compared to free EMO-treatment of different doses in UC mice, the NPs could enhance the remedial efficacy of EMO in DAI decline, histological remission, and regulation of colitis indicators, such as myeloperoxidase (MPO), nitric oxide (NO), and glutathione (GSH). The inflammatory factors including induced nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), TNF-α, and IL-1β were suppressed by EMO/PSM NPs at both mRNA and protein levels. The obtained NPs could also promote the regeneration of the mucosal barrier via reduced fluorescein isothiocyanate (FITC)-dextran leakage in the transwell co-culture model and decreased serum zonulin levels, which was demonstrated to be associated with the upregulated tight junctions (TJs)-related proteins (claudin-2, occludin, and zo-1) and MUC2 at mRNA level. Moreover, the NPs could contribute to attenuating the liver injury caused by free EMO under excessive immune inflammation. CONCLUSION Our results demonstrated that EMO/PSM NPs could specifically release EMO in the diseased colon, and effectively enhance the anti-colitis effects of EMO related to intestinal barrier improvement. It can be considered as a novel potential alternative for oral colon-targeted UC therapy by increasing therapeutic efficacy and reducing side-effects.
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Affiliation(s)
- Dan Wang
- Department of Pharmaceutics, School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030, PR China
| | - Minghui Sun
- Department of Pharmaceutics, Affiliated Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, 1095 Jiefang Avenue, Wuhan 430030, PR China
| | - Ying Zhang
- Department of Pharmaceutics, School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030, PR China
| | - Zehong Chen
- Department of Pharmacy, Union Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology, 1227 Jiefang Road, Wuhan 430030, PR China
| | - Shuya Zang
- Department of Pharmaceutics, School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030, PR China
| | - Genyun Li
- Department of Pharmaceutics, School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030, PR China
| | - Gao Li
- Department of Pharmaceutics, School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030, PR China
| | - Andrew R Clark
- School of Medicine, Indiana University, 975W. Walnut St, IB 008, Indianapolis, IN 46202, USA
| | - Jiangeng Huang
- Department of Pharmaceutics, School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030, PR China.
| | - Luqin Si
- Department of Pharmaceutics, School of Pharmacy, Tongji Medical College of Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030, PR China.
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14
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Ban E, An SH, Park B, Park M, Yoon NE, Jung BH, Kim A. Improved Solubility and Oral Absorption of Emodin-Nicotinamide Cocrystal Over Emodin with PVP as a Solubility Enhancer and Crystallization Inhibitor. J Pharm Sci 2020; 109:3660-3667. [PMID: 32987091 DOI: 10.1016/j.xphs.2020.09.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 08/14/2020] [Accepted: 09/21/2020] [Indexed: 12/30/2022]
Abstract
Emodin exerts anti-inflammatory and anti-cancer effects. However, its poor water solubility limits development into a pharmaceutical product. Although an emodin-nicotinamide cocrystal (ENC) with improved dissolution rate was proposed as a potential candidate, crystallization back to emodin after dissolution diminished the advantage of the cocrystal approach. The objectives of this study were to identify a crystallization inhibitor to maintain the emodin supersaturation generated by ENC dissolution, and to examine its effect on oral pharmacokinetics of ENC. Among various polymers, polyvinylpyrrolidone K30 (PVP) was the most effective solubilizer and crystallization inhibitor. The solubility of ENC in a simulated intestinal fluid containing 1.5% PVP was 2-fold higher than that of emodin. However, comparison of oral pharmacokinetics in rats between ENC and emodin did not reflect such improved solubility of ENC in vitro relative to emodin. Instead, the plasma concentrations of a major metabolite of emodin showed a positive correlation with in vitro dissolution results, suggesting rapid gastrointestinal metabolism of emodin during absorption. In conclusion, PVP contributes to enhanced dissolution rates of ENC and inhibits crystallization of emodin in vivo, so that more metabolites can be formed and absorbed. Therefore, a metabolism inhibitor would be necessary to improve the oral bioavailability of emodin further.
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Affiliation(s)
- Eunmi Ban
- College of Pharmacy, CHA University, 335, Pangyo-ro, Bundang-gu, Seongnam-si, Seongnam 463-400, Republic of Korea
| | - Seong Hyeon An
- College of Pharmacy, CHA University, 335, Pangyo-ro, Bundang-gu, Seongnam-si, Seongnam 463-400, Republic of Korea
| | - Boosung Park
- College of Pharmacy, CHA University, 335, Pangyo-ro, Bundang-gu, Seongnam-si, Seongnam 463-400, Republic of Korea
| | - Minwoo Park
- College of Pharmacy, CHA University, 335, Pangyo-ro, Bundang-gu, Seongnam-si, Seongnam 463-400, Republic of Korea
| | - Na-Eun Yoon
- Molecular Recognition Research Center, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea
| | - Byung Hwa Jung
- Molecular Recognition Research Center, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 136-791, Republic of Korea
| | - Aeri Kim
- College of Pharmacy, CHA University, 335, Pangyo-ro, Bundang-gu, Seongnam-si, Seongnam 463-400, Republic of Korea.
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15
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Gan L, Ma J, You G, Mai J, Wang Z, Yang R, Xie C, Fei J, Tang L, Zhao J, Cai Z, Ye L. Glucuronidation and its effect on the bioactivity of amentoflavone, a biflavonoid from Ginkgo biloba leaves. J Pharm Pharmacol 2020; 72:1840-1853. [PMID: 32144952 DOI: 10.1111/jphp.13247] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 02/09/2020] [Indexed: 01/19/2023]
Abstract
OBJECTIVES Ginkgo biloba leaves contain amentoflavone (AMF), a dietary flavonoid that possesses antioxidant and anticancer activity. Flavonoids are extensively subjected to glucuronidation. This study aimed to determine the metabolic profile of AMF and the effect of glucuronidation on AMF bioactivity. METHODS A pharmacokinetic study was conducted to determine the plasma concentrations of AMF and its metabolites. The metabolic profile of AMF was elucidated using different species of microsomes. The antioxidant activity of AMF metabolites was determined using DPPH/ABTS radical and nitric oxide assays. The anticancer activity of AMF metabolites was evaluated in U87MG/U251 cells. KEY FINDINGS Pharmacokinetic studies indicated that the oral bioavailability of AMF was 0.06 ± 0.04%, and the area under the curve of the glucuronidated AMF metabolites (410.938 ± 62.219 ng/ml h) was significantly higher than that of AMF (194.509 ± 16.915 ng/ml h). UGT1A1 and UGT1A3 greatly metabolized AMF. No significant difference was observed in the antioxidant activity between AMF and its metabolites. The anticancer activity of AMF metabolites significantly decreased. CONCLUSIONS A low AMF bioavailability was due to extensive glucuronidation, which was mediated by UGT1A1 and UGT1A3. Glucuronidated AMF metabolites had the same antioxidant but had a lower anticancer activity than that of AMF.
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Affiliation(s)
- Lili Gan
- Guangdong Provincial Key Laboratory of New Drug Screening, Biopharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Jiating Ma
- Guangdong Provincial Key Laboratory of New Drug Screening, Biopharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Guoquan You
- Guangdong Provincial Key Laboratory of New Drug Screening, Biopharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Jinxia Mai
- Guangdong Provincial Key Laboratory of New Drug Screening, Biopharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Zhaoyu Wang
- Clinical Pharmacokinetics Laboratory, China Pharmaceutical University, Nanjing, China
| | - Ruopeng Yang
- Guangdong Provincial Key Laboratory of New Drug Screening, Biopharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Cong Xie
- Pharmacy Department of Nan Fang Hospital, Southern Medical University, Guangzhou, China
| | - Jingrao Fei
- Guangdong Provincial Key Laboratory of New Drug Screening, Biopharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Lan Tang
- Guangdong Provincial Key Laboratory of New Drug Screening, Biopharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Jie Zhao
- Guangdong Provincial Key Laboratory of New Drug Screening, Biopharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Zheng Cai
- Guangdong Provincial Key Laboratory of New Drug Screening, Biopharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Ling Ye
- Guangdong Provincial Key Laboratory of New Drug Screening, Biopharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
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16
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Long-Term Effect against Methicillin-Resistant Staphylococcus aureus of Emodin Released from Coaxial Electrospinning Nanofiber Membranes with a Biphasic Profile. Biomolecules 2020; 10:biom10030362. [PMID: 32120815 PMCID: PMC7175151 DOI: 10.3390/biom10030362] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 02/21/2020] [Accepted: 02/21/2020] [Indexed: 12/25/2022] Open
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is a serious and rapidly growing threat to human beings. Emodin has a potent activity against MRSA; however, its usage is limited due to high hydrophobicity and low oral bioavailability. Thus, the coaxial electrospinning nanofibers encapsulating emodin in the core of hydrophilic poly (vinylpyrrolidone), with a hygroscopic cellulose acetate sheath, have been fabricated to provide long-term effect against MRSA. Scanning electron microscopy and transmission electron microscopy confirmed the nanofibers had a linear morphology with nanometer in diameter, smooth surface, and core-shell structure. Attenuated total reflection-Fourier transform infrared spectra, X-ray diffraction patterns, and differential scanning calorimetric analyses verified emodin existed in amorphous form in the nanofibers. The nanofibers have 99.38 ± 1.00% entrapment efficiency of emodin and 167.8 ± 0.20% swelling ratio. Emodin released from nanofibers showed a biphasic drug release profile with an initial rapid release followed by a slower sustained release. CCK-8 assays confirmed the nontoxic nature of the emodin-loaded nanofibers to HaCaT cells. The anti-MRSA activity of the nanofibers can persist up to 9 days in AATCC147 and soft-agar overlay assays. These findings suggest that the emodin-loaded electrospun nanofibers with core-shell structure could be used as topical drug delivery system for wound infected by MRSA.
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17
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Adehin A, Tan KS, Zou C, Lu Z, Lin Y, Wang D, Cheng Q, Tan W. A compartmental approach to isosteviol's disposition in Sprague-Dawley rats. Naunyn Schmiedebergs Arch Pharmacol 2019; 393:1003-1011. [PMID: 31820053 DOI: 10.1007/s00210-019-01757-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 10/30/2019] [Indexed: 10/25/2022]
Abstract
Isosteviol has been reported to reverse hypertrophy and related inflammatory responses in in vitro models representative of cardiac muscle cells. The disposition of isosteviol is, however, characterized by secondary peaks and long plasma residence time despite reports of a relatively short half-life in liver fractions. The present study describes a compartmental approach to modelling the secondary peaks characteristic of isosteviol's concentration-time data in Sprague-Dawley rats. Oral (4 mg/kg) and intravenous (4 mg/kg) doses of isosteviol were administered to male and female Sprague-Dawley rats. Plasma samples collected between 0 and 72 h, and total bile secreted in 24 h, were analysed for isosteviol content with LC-MS/MS techniques. The disposition of isosteviol was, thereafter, described with a structural model that accounted for the sampling, liver and biliary secretion compartments, with a gap-time characterizing the accumulation and subsequent emptying of isosteviol for re-absorption. The half-life of isosteviol following oral dosing was about 103% greater in female rats than in the male, and the model-derived area under the concentration-time curve (AUC) in 72 h was about 756% greater in female animals than in males. Following the administration of intravenous doses of isosteviol, half-life and AUC in 24 h were about 332% and 595%, respectively, higher in female rats than in males. Isosteviol equivalent secreted into bile over 24 h accounted for about 94% of orally administered dose in male rats, and about 59% of oral dose in females. These findings show a differential systemic removal of isosteviol in Sprague-Dawley rats, likely explainable by gender-related differences in the glucuronidation-capacity of isosteviol.
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Affiliation(s)
- Ayorinde Adehin
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China.,Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Keai Sinn Tan
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - Chengjuan Zou
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - Zhiqiang Lu
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - Yue Lin
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - Dongfang Wang
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - Qing Cheng
- Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Wen Tan
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China.
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18
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Wu L, Chen Y, Liu H, Zhan Z, Liang Z, Zhang T, Cai Z, Ye L, Liu M, Zhao J, Liu S, Tang L. Emodin-induced hepatotoxicity was exacerbated by probenecid through inhibiting UGTs and MRP2. Toxicol Appl Pharmacol 2018; 359:91-101. [PMID: 30248416 DOI: 10.1016/j.taap.2018.09.029] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 09/10/2018] [Accepted: 09/20/2018] [Indexed: 01/30/2023]
Abstract
Aggravating effect of probenecid (a traditional anti-gout agent) on emodin-induced hepatotoxicity was evaluated in this study. 33.3% rats died in combination group, while no death was observed in rats treated with emodin alone or probenecid alone, indicating that emodin-induced (150 mg/kg) hepatotoxicity was exacerbated by probenecid (100 mg/kg). In toxicokinetics-toxicodynamics (TK-TD) study, aspartate aminotransferase (AST) and systemic exposure (area under the serum concentration-time curve, AUC) of emodin and its glucuronide were significantly increased in rats after co-administrated with emodin and probenecid for 28 consecutive days. Results showed that the increased AUC (increased by 85.9%) of emodin was mainly caused by the decreased enzyme activity of UDP-glucuronosyltransferases (UGTs, decreased by 11.8%-58.1%). In addition, AUC of emodin glucuronide was increased 5-fold, which was attributed to the decrease of multidrug-resistant-protein 2 (MRP2) protein levels (decreased by 54.4%). Similarly, in vitro experiments proved that probenecid reduced the cell viability of emodin-treated HepG2 cells through inhibiting UGT1A9, UGT2B7 and MRP2. Our findings demonstrated that emodin-induced hepatoxicity was exacerbated by probenecid through inhibition of UGTs and MRP2 in vivo and in vitro, indicating that gout patients should avoid taking emodin-containing preparations in combination with probenecid for a long time.
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Affiliation(s)
- Lili Wu
- Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Yulian Chen
- Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Han Liu
- Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Zhikun Zhan
- Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Zhi Liang
- Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Tao Zhang
- Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Zheng Cai
- Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Ling Ye
- Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Menghua Liu
- Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Jie Zhao
- Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Shuwen Liu
- Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Lan Tang
- Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China..
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19
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Jiang LL, Jiang Y, Zhao DS, Fan YX, Yu Q, Li P, Li HJ. CYP3A Activation and Glutathione Depletion Aggravate Emodin-Induced Liver Injury. Chem Res Toxicol 2018; 31:1052-1060. [PMID: 30203651 DOI: 10.1021/acs.chemrestox.8b00117] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
1,3,8-Trihydroxy-6-methylanthraquinone (emodin), a widely existing natural product in herbal medicines, has been reported to be hepatotoxic, but the exact underlying mechanism is still not fully understood. The objective of the present study was to evaluate the role of CYP3A and glutathione (GSH) in emodin-induced liver injury. Primary human hepatocytes were exposed to emodin with and without addition of CYP3A inducer/inhibitor and GSH synthesis inhibitor. It was found that emodin-mediated cytotoxicity increased when CYP3A was activated and GSH was depleted. Hepatotoxicity induced by emodin in rats by activation/inhibition of CYP3A and depletion of GSH was further investigated. Administration of emodin in combination with l-buthionine sulfoximine (BSO) or dexamethasone (DEX) resulted in aggravated liver injury, whereas pretreatment with ketoconazole (KTZ) suppressed the side effects caused by emodin. In addition, plasma exposure of emodin and its glucuronide metabolite were measured by ultraperformance liquid chromatography triple quadrupole mass spectrometry. Emodin and its glucuronide were lower in BSO-, DEX-, and KTZ- co-treated rats compared with those administered with emodin alone. In conclusion, these mentioned results suggested that CYP3A induction and GSH depletion might be involved in hepatotoxicity induced by emodin. This study may help to understand the risk factors and the mechanism of hepatotoxicity of emodin in humans.
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Affiliation(s)
- Li-Long Jiang
- State Key Laboratory of Natural Medicines , China Pharmaceutical University , Nanjing , China
| | - Yan Jiang
- Nanjing Forestry University , Nanjing , China
| | - Dong-Sheng Zhao
- State Key Laboratory of Natural Medicines , China Pharmaceutical University , Nanjing , China
| | - Ya-Xi Fan
- State Key Laboratory of Natural Medicines , China Pharmaceutical University , Nanjing , China
| | - Qiong Yu
- State Key Laboratory of Natural Medicines , China Pharmaceutical University , Nanjing , China
| | - Ping Li
- State Key Laboratory of Natural Medicines , China Pharmaceutical University , Nanjing , China
| | - Hui-Jun Li
- State Key Laboratory of Natural Medicines , China Pharmaceutical University , Nanjing , China
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20
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Wu L, Han W, Chen Y, Zhang T, Liu J, Zhong S, Liu H, Han C, Zhang Z, Liu S, Tang L. Gender Differences in the Hepatotoxicity and Toxicokinetics of Emodin: The Potential Mechanisms Mediated by UGT2B7 and MRP2. Mol Pharm 2018; 15:3931-3945. [PMID: 30011215 DOI: 10.1021/acs.molpharmaceut.8b00387] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Emodin is a main anthraquinone compound which exists in Chinese traditional medicines including Polygonum multiflorum and Rhubarb. It is documented to have obvious liver and kidney toxicity. This study aims to (a) estimate gender differences of the hepatotoxicity and toxicokinetics in rats after oral administration of emodin (60 and 150 mg/kg/d) for a consecutive 28 days and (b) clarify relative mechanisms caused by glucuronidation and disposition. Hepatotoxicity was significantly higher in female rats than that in male rats, as evidenced by histopathological and biochemical tests. Similarly, the toxicokinetic profiles of emodin have time and gender differences, which could cause time and gender differences in hepatotoxicity. The metabolic and transcriptomics data of 55 human liver and 36 human kidney samples demonstrated that UDP-glucuronosyltransferase 2B7 (UGT2B7) was the predominant enzyme for emodin glucuronidation. A genome-wide association study (GWAS) identified that rs11726899 located within ∼50 kb of the transcript of UGT2B could significantly affect emodin metabolism. Knockdown of UGT2B7 in HepG2 cells significantly decreased emodin glucuronidation and increased cytotoxicity of emodin. The gene expression and protein levels of UGT2B7 were decreased, but those of the multidrug-resistant-protein 2 (MRP2) were increased in HepG2 cells after being treated with 50 μM emodin for 48 h. Long-term use of emodin could decrease the intrinsic clearance (CLint, decreased by 18.5%-35.4%) values of zidovidue (UGT2B7 substrate) glucuronide in both male and female liver microsomes from rats administrated with emodin for 28 days, thus causing the accumulation of emodin. However, higher self-induced MRP2 expression and lower hepatotoxicity were observed in emodin-treated male rats compared to that in female rats. Therefore, gender differences in the hepatotoxicity and toxicokinetics of emodin are potentially mediated by the coupling of UGT2B7 and MRP2 in vivo.
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Affiliation(s)
- Lili Wu
- State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Division of Nephrology , Southern Medical University , Guangzhou 510515 , China.,Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences , Southern Medical University , Guangzhou 510515 , China
| | - Weichao Han
- Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences , Southern Medical University , Guangzhou 510515 , China
| | - Yulian Chen
- Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences , Southern Medical University , Guangzhou 510515 , China
| | - Tao Zhang
- Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences , Southern Medical University , Guangzhou 510515 , China
| | - Junjin Liu
- Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences , Southern Medical University , Guangzhou 510515 , China
| | - Shilong Zhong
- Medical Research Center of Guangdong General Hospital , Guangdong Academy of Medical Sciences , Guangzhou 510515 , China
| | - Han Liu
- Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences , Southern Medical University , Guangzhou 510515 , China
| | - Congcong Han
- Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences , Southern Medical University , Guangzhou 510515 , China
| | - Zhongyi Zhang
- Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences , Southern Medical University , Guangzhou 510515 , China
| | - Shuwen Liu
- State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Division of Nephrology , Southern Medical University , Guangzhou 510515 , China.,Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences , Southern Medical University , Guangzhou 510515 , China
| | - Lan Tang
- State Key Laboratory of Organ Failure Research, National Clinical Research Center of Kidney Disease, Division of Nephrology , Southern Medical University , Guangzhou 510515 , China.,Biopharmaceutics, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences , Southern Medical University , Guangzhou 510515 , China
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21
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Yu Q, Jiang LL, Luo N, Fan YX, Ma J, Li P, Li HJ. Enhanced absorption and inhibited metabolism of emodin by 2, 3, 5, 4'-tetrahydroxystilbene-2-O-β-D-glucopyranoside: Possible mechanisms for Polygoni Multiflori Radix-induced liver injury. Chin J Nat Med 2018. [PMID: 28629535 DOI: 10.1016/s1875-5364(17)30067-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Polygoni Multiflori Radix (PMR) has been commonly used as a tonic in China for centuries. However, PMR-associated hepatotoxicity is becoming a safety issue. In our previous in vivo study, an interaction between stilbenes and anthraquinones has been discovered and a hypothesis is proposed that the interaction between stilbene glucoside-enriching fraction and emodin may contribute to the side effects of PMR. To further support our previous in vivo results in rats, the present in vitro study was designed to evaluate the effects of 2, 3, 5, 4'-tetrahydroxystilbene-2-O-β-D-glucopyranoside (TSG) on the cellular absorption and human liver microsome metabolism of emodin. The obtained results indicated that the absorption of emodin in Caco-2 cells was enhanced and the metabolism of emodin in human liver microsomes was inhibited after TSG treatment. The effects of the transport inhibitors on the cellular emodin accumulation were also examined. Western blot assay suggested that the depressed metabolism of emodin could be attributed to the down-regulation of UDP-glucuronosyltransferases (UGTs) 1A8, 1A10, and 2B7. These findings definitively demonstrated the existence of interaction between TSG and emodin, which provide a basis for a better understanding of the underlying mechanism for PMR-induced liver injury.
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Affiliation(s)
- Qiong Yu
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Li-Long Jiang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Na Luo
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Ya-Xi Fan
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Jiang Ma
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Ping Li
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Hui-Jun Li
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China.
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22
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Pandith SA, Dar RA, Lattoo SK, Shah MA, Reshi ZA. Rheum australe, an endangered high-value medicinal herb of North Western Himalayas: a review of its botany, ethnomedical uses, phytochemistry and pharmacology. PHYTOCHEMISTRY REVIEWS : PROCEEDINGS OF THE PHYTOCHEMICAL SOCIETY OF EUROPE 2018; 17:573-609. [PMID: 32214920 PMCID: PMC7088705 DOI: 10.1007/s11101-018-9551-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 01/25/2018] [Indexed: 05/05/2023]
Abstract
Rheum australe (Himalayan Rhubarb) is a multipurpose, endemic and endangered medicinal herb of North Western Himalayas. It finds extensive use as a medicinal herb since antiquity in different traditional systems of medicine to cure a wide range of ailments related to the circulatory, digestive, endocrine, respiratory and skeletal systems as well as to treat various infectious diseases. The remedying properties of this plant species are ascribed to a set of diverse bioactive secondary metabolite constituents, particularly anthraquinones (emodin, chrysophanol, physcion, aloe-emodin and rhein) and stilbenoids (piceatannol, resveratrol), besides dietary flavonoids known for their putative health benefits. Recent studies demonstrate the pharmacological efficacy of some of these metabolites and/or their derivatives as lead molecules for the treatment of various human diseases. Present review comprehensively covers the literature available on R. australe from 1980 to early 2018. The review provides up-to-date information available on its botany for easy identification of the plant, and origin and historical perspective detailing its trade and commerce. Distribution, therapeutic potential in relation to traditional uses and pharmacology, phytochemistry and general biosynthesis of major chemical constituents are also discussed. Additionally, efficient and reproducible in vitro propagation studies holding vital significance in preserving the natural germplasm of the plant and for its industrial exploitation have also been highlighted. The review presents a detailed perspective for future studies to conserve and sustainably make use of this endangered plant species at a commercial scale.
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Affiliation(s)
- Shahzad A Pandith
- 1Department of Botany, University of Kashmir, Srinagar, Jammu and Kashmir 190006 India
| | - Riyaz Ahmad Dar
- 1Department of Botany, University of Kashmir, Srinagar, Jammu and Kashmir 190006 India
| | - Surrinder K Lattoo
- 2Plant Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu Tawi, 180001 India
| | - Manzoor A Shah
- 1Department of Botany, University of Kashmir, Srinagar, Jammu and Kashmir 190006 India
| | - Zafar A Reshi
- 1Department of Botany, University of Kashmir, Srinagar, Jammu and Kashmir 190006 India
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23
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Younes M, Aggett P, Aguilar F, Crebelli R, Filipič M, Frutos MJ, Galtier P, Gott D, Gundert-Remy U, Kuhnle GG, Lambré C, Leblanc JC, Lillegaard IT, Moldeus P, Mortensen A, Oskarsson A, Stankovic I, Waalkens-Berendsen I, Woutersen RA, Andrade RJ, Fortes C, Mosesso P, Restani P, Pizzo F, Smeraldi C, Papaioannou A, Wright M. Safety of hydroxyanthracene derivatives for use in food. EFSA J 2018; 16:e05090. [PMID: 32625659 PMCID: PMC7009633 DOI: 10.2903/j.efsa.2018.5090] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
The Panel on Food Additives and Nutrient Sources added to Food (ANS) was asked to deliver a scientific opinion on the safety of hydroxyanthracene derivatives and to provide advice on a daily intake that does not give rise to concerns about harmful effects to health. Hydroxyanthracene derivatives are a class of chemical substances naturally occurring in different botanical species and used in food to improve bowel function. The ANS Panel reviewed the available scientific data on a possible relationship between hydroxyanthracene derivatives exposure and genotoxic and carcinogenic effects. On the basis of the data currently available, the Panel noted that emodin, aloe-emodin and the structurally related substance danthron have shown evidence of in vitro genotoxicity. Aloe extracts have also been shown to be genotoxic in vitro possibly due to the presence of hydroxyanthracene derivatives in the extract. Furthermore, aloe-emodin was shown to be genotoxic in vivo and the whole-leaf aloe extract and the structural analogue danthron were shown to be carcinogenic. Epidemiological data suggested an increased risk for colorectal cancer associated with the general use of laxatives, several of which contain hydroxyanthracene derivatives. Considering the possible presence of aloe-emodin and emodin in extracts, the Panel concluded that hydroxyanthracene derivatives should be considered as genotoxic and carcinogenic unless there are specific data to the contrary, such as for rhein, and that there is a safety concern for extracts containing hydroxyanthracene derivatives although uncertainty persists. The Panel was unable to provide advice on a daily intake of hydroxyanthracene derivatives that does not give rise to concerns about harmful effects to health.
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24
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In Vitro Glucuronidation of Wushanicaritin by Liver Microsomes, Intestine Microsomes and Expressed Human UDP-Glucuronosyltransferase Enzymes. Int J Mol Sci 2017; 18:ijms18091983. [PMID: 28925930 PMCID: PMC5618632 DOI: 10.3390/ijms18091983] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Revised: 09/05/2017] [Accepted: 09/14/2017] [Indexed: 11/17/2022] Open
Abstract
Wushanicaritin, a natural polyphenol compound, exerts many biological activities. This study aimed to characterize wushanicaritin glucuronidation by pooled human liver microsomes (HLM), human intestine microsomes and individual uridine diphosphate-glucuronosyltransferase (UGT) enzyme. Glucuronidation rates were determined by incubating wushanicaritin with uridine diphosphoglucuronic acid-supplemented microsomes. Kinetic parameters were derived by appropriate model fitting. Reaction phenotyping, the relative activity factor (RAF) and activity correlation analysis were performed to identify the main UGT isoforms. Wushanicaritin glucuronidation in HLM was efficient with a high CLint (intrinsic clearance) value of 1.25 and 0.69 mL/min/mg for G1 and G2, respectively. UGT1A1 and 1A7 showed the highest activities with the intrinsic clearance (CLint) values of 1.16 and 0.38 mL/min/mg for G1 and G2, respectively. In addition, G1 was significantly correlated with β-estradiol glucuronidation (r = 0.847; p = 0.0005), while G2 was also correlated with chenodeoxycholic acid glucuronidation (r = 0.638, p = 0.026) in a bank of individual HLMs (n = 12). Based on the RAF approach, UGT1A1 contributed 51.2% for G1, and UGT1A3 contributed 26.0% for G2 in HLM. Moreover, glucuronidation of wushanicaritin by liver microsomes showed marked species difference. Taken together, UGT1A1, 1A3, 1A7, 1A8, 1A9 and 2B7 were identified as the main UGT contributors responsible for wushanicaritin glucuronidation.
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25
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Chen J, Li S, Liu M, Lam CWK, Li Z, Xu X, Chen Z, Zhang W, Yao M. Bioconcentration and Metabolism of Emodin in Zebrafish Eleutheroembryos. Front Pharmacol 2017; 8:453. [PMID: 28744218 PMCID: PMC5504456 DOI: 10.3389/fphar.2017.00453] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Accepted: 06/23/2017] [Indexed: 12/16/2022] Open
Abstract
Emodin is a major active anthraquinone of various herbal laxatives, which can exert many pharmacological effects. However, chronic use of anthranoid laxatives, even at low dosages, may cause melanosis coli (MC). It has been suggested that the accumulation of anthraquinones is a risk factor in the MC process. To investigate the accumulation of emodin, we conducted a bioconcentration study of emodin in zebrafish eleutheroembryos. Based on the economic cooperation and development (OECD) 305 test, zebrafish eleutheroembryos were exposed to emodin at a constant concentration for 48 h, before the test media were replaced by the blank medium for 24 h of depuration. To eliminate the effect of metabolism of emodin for assessment of the bioconcentration factor (BCF), we also conducted a modified test for which zebrafish eleutheroembryos were exposed to the non-renewed test media, whose emodin concentration decreased with time. At different exposure time points, zebrafish eleutheroembryos and exposure media were sampled for analysis of emodin concentration using HPLC-MS/MS. The results showed rapid accumulation of emodin in zebrafish eleutheroembryos to reach a steady-state concentration within 24 h. Meanwhile, emodin was actively metabolized by zebrafish eleutheroembryos to result in 29.5–40.7% of its elimination. In the groups with high or low concentrations of emodin, the standardized BCF (sBCF) values in the standard test were 24.0 and 20.0, while those in the modified test were 50.4 and 52.0. These results showed that emodin could accumulate in zebrafish eleutheroembryos when used for 48 h and beyond, suggesting that the accumulation of anthraquinones may be a risk factor in the MC process. Accordingly, emodin should be unsuitable for long-term use due to its accumulation.
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Affiliation(s)
- Jiefeng Chen
- School of Pharmaceutical Sciences, Sun Yat-sen UniversityGuangzhou, China
| | - Shaodong Li
- Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou, China
| | - Mengping Liu
- School of Pharmaceutical Sciences, Sun Yat-sen UniversityGuangzhou, China
| | - Christopher Wai Kei Lam
- State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and TechnologyMacau, China
| | - Zheng Li
- State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and TechnologyMacau, China
| | - Xinjun Xu
- School of Pharmaceutical Sciences, Sun Yat-sen UniversityGuangzhou, China
| | - Zuanguang Chen
- School of Pharmaceutical Sciences, Sun Yat-sen UniversityGuangzhou, China
| | - Wei Zhang
- State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and TechnologyMacau, China
| | - Meicun Yao
- School of Pharmaceutical Sciences, Sun Yat-sen UniversityGuangzhou, China
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26
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Wang Z, Lan Y, Chen M, Wen C, Hu Y, Liu Z, Ye L. Eriodictyol, Not Its Glucuronide Metabolites, Attenuates Acetaminophen-Induced Hepatotoxicity. Mol Pharm 2017; 14:2937-2951. [DOI: 10.1021/acs.molpharmaceut.7b00345] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Zhaoyu Wang
- State
Key Laboratory of Organ Failure Research, Guangdong Provincial Key
Laboratory of New Drug Screening, department of biopharmaceutics,
School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Yao Lan
- State
Key Laboratory of Organ Failure Research, Guangdong Provincial Key
Laboratory of New Drug Screening, department of biopharmaceutics,
School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - MingHao Chen
- State
Key Laboratory of Organ Failure Research, Guangdong Provincial Key
Laboratory of New Drug Screening, department of biopharmaceutics,
School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Cailing Wen
- State
Key Laboratory of Organ Failure Research, Guangdong Provincial Key
Laboratory of New Drug Screening, department of biopharmaceutics,
School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Yanxian Hu
- State
Key Laboratory of Organ Failure Research, Guangdong Provincial Key
Laboratory of New Drug Screening, department of biopharmaceutics,
School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Zhongqiu Liu
- State
Key Laboratory of Organ Failure Research, Guangdong Provincial Key
Laboratory of New Drug Screening, department of biopharmaceutics,
School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
- International
Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong China, 510006
| | - Ling Ye
- State
Key Laboratory of Organ Failure Research, Guangdong Provincial Key
Laboratory of New Drug Screening, department of biopharmaceutics,
School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
- State
Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
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27
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Li J, Shi Y, Ren Y, Cong Z, Wu G, Chen N, Zhao X, Li L. Development and evaluation of self–nanoemulsifying drug delivery system of rhubarb anthraquinones. J Drug Deliv Sci Technol 2017. [DOI: 10.1016/j.jddst.2017.04.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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28
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Wu S, Zhang Y, Zhang Z, Song R. Use of liquid chromatography hybrid triple-quadrupole mass spectrometry for the detection of emodin metabolites in rat bile and urine. Biomed Chromatogr 2017; 31. [PMID: 28342275 DOI: 10.1002/bmc.3979] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 02/28/2017] [Accepted: 03/22/2017] [Indexed: 11/05/2022]
Abstract
Emodin is the representative form of rhubarb, which is widely used in traditional Chinese medicine for the treatment of purgative, anti-inflammatory, antioxidative and antiviral, etc. Previous reports demonstrated that emodin glucuronide was the major metabolite in plasma. Owing to the extensive conjugation reactions of polyphenols, the aim of this study was to identify the metabolites of emodin in rat bile and urine. Neutral loss and precursor ion scan methods of triple-quadrupole mass spectrometer revealed 13 conjugated metabolites in rat bile and 22 metabolites in rat urine, which included four phase I and 18 phase II metabolites. The major metabolites in rat biosamples were emodin glucuronoconjugates. Moreover, rhein monoglucuronide, chrysophanol monoglucuronide and rhein sulfate were proposed for the first time after oral administration of emodin. Overall, liquid chromatography hybrid triple-quadrupole mass spectrometry analysis leads to the discovery of several novel emodin metabolites in rat bile and urine and underscores that conjugated with glucuronic acid is the main metabolic pathway.
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Affiliation(s)
- Songyan Wu
- Key Laboratory of Drug Quality Control & Pharmacovigilance, (China Pharmaceutical University, Ministry of Education), Nanjing, China.,State Key Laboratory of Natural Medicine, China Pharmaceutical University, Nanjing, China
| | - Yaqing Zhang
- Key Laboratory of Drug Quality Control & Pharmacovigilance, (China Pharmaceutical University, Ministry of Education), Nanjing, China.,State Key Laboratory of Natural Medicine, China Pharmaceutical University, Nanjing, China
| | - Zunjian Zhang
- Key Laboratory of Drug Quality Control & Pharmacovigilance, (China Pharmaceutical University, Ministry of Education), Nanjing, China.,State Key Laboratory of Natural Medicine, China Pharmaceutical University, Nanjing, China
| | - Rui Song
- Key Laboratory of Drug Quality Control & Pharmacovigilance, (China Pharmaceutical University, Ministry of Education), Nanjing, China.,State Key Laboratory of Natural Medicine, China Pharmaceutical University, Nanjing, China
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29
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Chen M, Wei S, Luo C, Chen F, Song S, Shen Q, Mo Z, Wei F. Simultaneous determination of wogonin, oroxylin a, schisandrin, paeoniflorin and emodin in rat serum by HPLC-MS/MS and application to pharmacokinetic studies. Biomed Chromatogr 2017; 31. [PMID: 28236316 DOI: 10.1002/bmc.3966] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 02/15/2017] [Accepted: 02/21/2017] [Indexed: 11/08/2022]
Abstract
Wogonin and oroxylin A in Scutellariae Radix, schisandrin in Chinensis Fructus, paeoniflorin in Moutan Cortex and emodin in Polygoni Cuspidate Rhizome et Radix are anti-inflammatory active compounds. A method for simultaneous determination of the five compounds in rat was developed and validated using high-performance liquid chromatography with tandem mass spectrometry (HPLC-MS/MS). The separation was performed on a Symmetry C18 column (4.6 × 50 mm, 3.5 μm) with acetonitrile and 0.1% formic acid aqueous solution as the mobile phases. The detection was performed using multiple-reaction monitoring with electrospray ionization source in positive-negative ion mode. The calibration curves showed good linearity (r ≥ 0.9955). The lower limit of quantification (LLOQ) was 5 ng/mL for wogonin and schisandrin, 10 ng/mL for oroxylin A and emodin, and 15 ng/mL for paeoniflorin, respectively. The relative standard deviations of intraday and interday precisions were <11.49 and 14.28%, respectively. The extraction recoveries and matrix effects were acceptable. The analytes were stable under the experiment conditions. The validated method has been successfully applied to pharmacokinetic studies of the five compounds in rats after oral administration of Hu-gan-kan-kang-yuan capsule. This paper would be a valuable reference for pharmacokinetic studies of Chinese medicine preparations containing the five compounds.
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Affiliation(s)
- Minting Chen
- College of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Suying Wei
- Department of Chemistry and Biochemistry, Lamar University, Beaumont, Texas, USA
| | - Chaohua Luo
- College of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Feilong Chen
- College of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Shuai Song
- College of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Qun Shen
- College of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Zhixian Mo
- College of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Fenghuan Wei
- College of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
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30
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Abu Eid S, Adams M, Scherer T, Torres-Gómez H, Hackl MT, Kaplanian M, Riedl R, Luger A, Fürnsinn C. Emodin, a compound with putative antidiabetic potential, deteriorates glucose tolerance in rodents. Eur J Pharmacol 2017; 798:77-84. [DOI: 10.1016/j.ejphar.2017.01.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 01/17/2017] [Accepted: 01/17/2017] [Indexed: 12/20/2022]
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Ban E, Park M, Jeong S, Kwon T, Kim EH, Jung K, Kim A. Poloxamer-Based Thermoreversible Gel for Topical Delivery of Emodin: Influence of P407 and P188 on Solubility of Emodin and Its Application in Cellular Activity Screening. Molecules 2017; 22:E246. [PMID: 28178225 PMCID: PMC6155703 DOI: 10.3390/molecules22020246] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 01/29/2017] [Accepted: 02/02/2017] [Indexed: 11/17/2022] Open
Abstract
Emodin is a component in a Chinese herb, Rheum officinale Baill, traditionally used for diabetes and anticancer. Its poor solubility is one of the major challenges to pharmaceutical scientists. We previously reported on thermoreversible gel formulations based on poloxamer for the topical delivery of emodin. The present study was to understand the effect of poloxamer type on emodin solubility and its application in cellular activity screening. Various gel formulations composed of poloxamer 407 (P407), poloxamer 188 (P188) and PEG400 were prepared and evaluated. Major evaluation parameters were the gelation temperature (Tgel) and solubility of emodin. The emodin solubility increased with increasing poloxamer concentration and the Tgel was modulated by the proper combination of P407. In particular, this study showed that the amount of P407 in thermoreversible poloxamer gel (PG) was the dominant factor in enhancing solubility and P188 was effective at fixing gelation temperature in the desired range. A thermoreversible emodin PG was selected as the proper composition with the liquid state at room temperature and gel state at body temperature. The gel showed the solubility enhancement of emodin at least 100-fold compared to 10% ethanol or water. The thermoreversible formulation was applied for in vitro cellular activity screening in the human dermal fibroblast cell line and DLD-1 colon cancer cell line after dilution with cell culture media. The thermoreversible gel formulation remained as a clear solution in the microplate, which allowed reliable cellular activity screening. In contrast, emodin solution in ethanol or DMSO showed precipitation at the corresponding emodin concentration, complicating data interpretation. In conclusion, the gel formulation is proposed as a useful prototype topical formulation for testing emodin in vivo as well as in vitro.
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Affiliation(s)
- Eunmi Ban
- College of Pharmacy, CHA University, 521 CHA Bio Complex, 335 Pangyo-ro, Bundang-gu, Seongnam 463-400, Korea.
| | - Mijung Park
- College of Pharmacy, CHA University, 521 CHA Bio Complex, 335 Pangyo-ro, Bundang-gu, Seongnam 463-400, Korea.
| | - Seonghee Jeong
- College of Pharmacy, CHA University, 521 CHA Bio Complex, 335 Pangyo-ro, Bundang-gu, Seongnam 463-400, Korea.
| | - Taekhyun Kwon
- College of Pharmacy, CHA University, 521 CHA Bio Complex, 335 Pangyo-ro, Bundang-gu, Seongnam 463-400, Korea.
| | - Eun-Hee Kim
- College of Pharmacy, CHA University, 521 CHA Bio Complex, 335 Pangyo-ro, Bundang-gu, Seongnam 463-400, Korea.
| | - Kiwon Jung
- College of Pharmacy, CHA University, 521 CHA Bio Complex, 335 Pangyo-ro, Bundang-gu, Seongnam 463-400, Korea.
| | - Aeri Kim
- College of Pharmacy, CHA University, 521 CHA Bio Complex, 335 Pangyo-ro, Bundang-gu, Seongnam 463-400, Korea.
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Wang L, Chen Q, Zhu L, Li Q, Zeng X, Lu L, Hu M, Wang X, Liu Z. Metabolic Disposition of Luteolin Is Mediated by the Interplay of UDP-Glucuronosyltransferases and Catechol-O-Methyltransferases in Rats. Drug Metab Dispos 2016; 45:306-315. [PMID: 28031430 DOI: 10.1124/dmd.116.073619] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 12/27/2016] [Indexed: 11/22/2022] Open
Abstract
Luteolin partially exerts its biologic effects via its metabolites catalyzed by UDP-glucuronosyltransferases (UGTs) and catechol-O-methyltransferases (COMTs). However, the interplay of UGTs and COMTs in mediating luteolin disposition has not been well clarified. In this study, we investigated the glucuronidation and methylation pathways of luteolin mediated by the interplay of UGTs and COMTs in vivo and in vitro. A total of nine luteolin metabolites was detected in rat plasma and bile by liquid chromatography-tandem mass spectrometry, namely, three glucuronides, two methylated metabolites, and four methylated glucuronides. Luteolin-3'-glucuronide (Lut-3'-G) exhibited the highest systemic exposure among these metabolites. Kinetics studies in rat liver S9 fractions suggested two pathways, as follows: 1) Luteolin was glucuronidated to luteolin-7-glucuronide, luteolin-4'-glucuronide, and Lut-3'-G by UGTs, and then Lut-7-G was methylated to chrysoeriol-7-glucuronide and diosmetin-7-glucuronide by COMTs. 2) Alternatively, luteolin was methylated to chrysoeriol and diosmetin by COMTs, and then chrysoeriol and diosmetin were glucuronidated by UGTs to their respective glucuronides. The methylation rate of luteolin was significantly increased by the absence of glucuronidation, whereas the glucuronidation rate was increased by the absence of methylation, but to a lesser extent. In conclusion, two pathways mediated by the interplay of UGTs and COMTs are probably involved in the metabolic disposition of luteolin. The glucuronidation and methylation of luteolin compensate for each other, although glucuronidation is the predominant pathway.
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Affiliation(s)
- Liping Wang
- First Affiliated Hospital of the Medical College, Shihezi University, Shihezi, Xinjiang, PR China (L.W., Q.C., X.Z., X.W.); International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, PR China (L.W., L.Z., L.L., M.H., Z.L.); Department of Pharmacy, Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, PR China (Q.L.); and College of Pharmacy, University of Houston, Houston, Texas (M.H.)
| | - Qingwei Chen
- First Affiliated Hospital of the Medical College, Shihezi University, Shihezi, Xinjiang, PR China (L.W., Q.C., X.Z., X.W.); International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, PR China (L.W., L.Z., L.L., M.H., Z.L.); Department of Pharmacy, Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, PR China (Q.L.); and College of Pharmacy, University of Houston, Houston, Texas (M.H.)
| | - Lijun Zhu
- First Affiliated Hospital of the Medical College, Shihezi University, Shihezi, Xinjiang, PR China (L.W., Q.C., X.Z., X.W.); International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, PR China (L.W., L.Z., L.L., M.H., Z.L.); Department of Pharmacy, Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, PR China (Q.L.); and College of Pharmacy, University of Houston, Houston, Texas (M.H.)
| | - Qiang Li
- First Affiliated Hospital of the Medical College, Shihezi University, Shihezi, Xinjiang, PR China (L.W., Q.C., X.Z., X.W.); International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, PR China (L.W., L.Z., L.L., M.H., Z.L.); Department of Pharmacy, Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, PR China (Q.L.); and College of Pharmacy, University of Houston, Houston, Texas (M.H.)
| | - Xuejun Zeng
- First Affiliated Hospital of the Medical College, Shihezi University, Shihezi, Xinjiang, PR China (L.W., Q.C., X.Z., X.W.); International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, PR China (L.W., L.Z., L.L., M.H., Z.L.); Department of Pharmacy, Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, PR China (Q.L.); and College of Pharmacy, University of Houston, Houston, Texas (M.H.)
| | - Linlin Lu
- First Affiliated Hospital of the Medical College, Shihezi University, Shihezi, Xinjiang, PR China (L.W., Q.C., X.Z., X.W.); International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, PR China (L.W., L.Z., L.L., M.H., Z.L.); Department of Pharmacy, Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, PR China (Q.L.); and College of Pharmacy, University of Houston, Houston, Texas (M.H.)
| | - Ming Hu
- First Affiliated Hospital of the Medical College, Shihezi University, Shihezi, Xinjiang, PR China (L.W., Q.C., X.Z., X.W.); International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, PR China (L.W., L.Z., L.L., M.H., Z.L.); Department of Pharmacy, Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, PR China (Q.L.); and College of Pharmacy, University of Houston, Houston, Texas (M.H.)
| | - Xinchun Wang
- First Affiliated Hospital of the Medical College, Shihezi University, Shihezi, Xinjiang, PR China (L.W., Q.C., X.Z., X.W.); International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, PR China (L.W., L.Z., L.L., M.H., Z.L.); Department of Pharmacy, Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, PR China (Q.L.); and College of Pharmacy, University of Houston, Houston, Texas (M.H.)
| | - Zhongqiu Liu
- First Affiliated Hospital of the Medical College, Shihezi University, Shihezi, Xinjiang, PR China (L.W., Q.C., X.Z., X.W.); International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, PR China (L.W., L.Z., L.L., M.H., Z.L.); Department of Pharmacy, Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, PR China (Q.L.); and College of Pharmacy, University of Houston, Houston, Texas (M.H.)
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Dai P, Luo F, Wang Y, Jiang H, Wang L, Zhang G, Zhu L, Hu M, Wang X, Lu L, Liu Z. Species- and gender-dependent differences in the glucuronidation of a flavonoid glucoside and its aglycone determined using expressed UGT enzymes and microsomes. Biopharm Drug Dispos 2016; 36:622-35. [PMID: 26317684 DOI: 10.1002/bdd.1989] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 08/13/2015] [Accepted: 08/22/2015] [Indexed: 11/09/2022]
Abstract
Flavonoids occur naturally as glucosides and aglycones. Their common phenolic hydroxyl groups may trigger extensive UDP-glucuronosyltransferase (UGT)- catalysed metabolism. Unlike aglycones, glucosides contain glucose moieties. However, the influence of these glucose moieties on glucuronidation of glucosides and aglycones remains unclear. In this study, the flavonoid glucoside tilianin and its aglycone acacetin were used as model compounds. The glucuronidation characteristics and enzyme kinetics of tilianin and acacetin were compared using human UGT isoforms, liver microsomes and intestinal microsomes obtained from different animal species. Tilianin and acacetin were metabolized into different glucuronides, with UGT1A8 produced as the main isoform. Assessment of enzyme kinetics in UGT1A8, human liver microsomes and human intestinal microsomes revealed that compared with tilianin, acacetin displayed lower Km (0.6-, 0.7- and 0.6-fold, respectively), higher Vmax (20-, 60- and 230-fold, respectively) and higher clearance (30-, 80- and 300-fold, respectively). Furthermore, glucuronidation of acacetin and tilianin showed significant species- and gender-dependent differences. In conclusion, glucuronidation of flavonoid aglycones is faster than that of glucosides in the intestine and the liver. Understanding the metabolism and species- and gender-dependent differences between glucosides and aglycones is crucial for the development of drugs from flavonoids.
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Affiliation(s)
- Peimin Dai
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong, 510515, China.,International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China
| | - Feifei Luo
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China
| | - Ying Wang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong, 510515, China.,International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China
| | - Huangyu Jiang
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China
| | - Liping Wang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong, 510515, China.,First Affiliated Hospital of the Medical College, Shihezi University, Xin Jiang, 832008, China
| | - Guiyu Zhang
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China
| | - Lijun Zhu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China
| | - Ming Hu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China.,Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, 1441 Moursund Street, Houston, Texas, 77030, USA
| | - Xinchun Wang
- First Affiliated Hospital of the Medical College, Shihezi University, Xin Jiang, 832008, China
| | - Linlin Lu
- International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China
| | - Zhongqiu Liu
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong, 510515, China.,International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China
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Wang M, Yang G, He Y, Xu B, Zeng M, Ge S, Yin T, Gao S, Hu M. Establishment and use of new MDCK II cells overexpressing both UGT1A1 and MRP2 to characterize flavonoid metabolism via the glucuronidation pathway. Mol Nutr Food Res 2016; 60:1967-83. [PMID: 26833852 DOI: 10.1002/mnfr.201500321] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 11/23/2015] [Accepted: 01/12/2016] [Indexed: 11/06/2022]
Abstract
SCOPE The purpose of this study is to characterize how overexpression of an efflux transporter and an UDP-glucuronosyltransferase (UGT) affects the cellular kinetics of glucuronidation processes. METHODS AND RESULTS A new MDCK II cell line overexpressing both MRP2 and UGT1A1 (MDCKII-UGT1A1/MRP2 cells) was developed and used to determine how overexpression of an efflux transporter affects the kinetics of cellular flavonoid glucuronide production. The results showed that most model flavonoids (from a total of 13) were mainly metabolized into glucuronides in the MDCKII-UGT1A1/MRP2 cells and the glucuronides were rapidly excreted. Flavonoids with three or fewer hydroxyl group at 7, 3' or 6 hydroxyl group were also metabolized into sulfates. Mechanistic studies using 7-hydroxylflavone showed that its glucuronide was mainly (90%) effluxed by BCRP with a small (10%) but significant contribution from MRP2. Maximal velocity of glucuronide production MDCK-MRP2/UGT1A1 cells showed a fairly good correlation (R(2) >0.8) with those derived using UGT1A1 microsomes, but other kinetic parameters (e.g., Km ) did not correlate. CONCLUSION Overexpression of a second efficient efflux transporter did not significantly change the fact that BCRP is the dominant transporter for flavonoid glucuronide nor did it diminish the influence of the efflux transporter as the "gate keeper" of glucuronidation process.
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Affiliation(s)
- Meifang Wang
- Hubei University of Medicine and University-Affiliated Taihe Hospital, Shiyan, China.,Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
| | - Guangyi Yang
- Hubei University of Medicine and University-Affiliated Taihe Hospital, Shiyan, China.,Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA.,Hubei Provincial Technology and Research Center for Comprehensive Development of Medicinal Herbs, Hubei University of Medicine, Shiyan, Hubei, China
| | - Yu He
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
| | - Beibei Xu
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
| | - Min Zeng
- Hubei University of Medicine and University-Affiliated Taihe Hospital, Shiyan, China.,Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
| | - Shufan Ge
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
| | - Taijun Yin
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
| | - Song Gao
- Hubei University of Medicine and University-Affiliated Taihe Hospital, Shiyan, China.,Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA
| | - Ming Hu
- Hubei University of Medicine and University-Affiliated Taihe Hospital, Shiyan, China. .,Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, USA.
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In vitro glucuronidation of methyl gallate and pentagalloyl glucopyranose by liver microsomes. Drug Metab Pharmacokinet 2016; 31:292-303. [PMID: 27325020 DOI: 10.1016/j.dmpk.2016.04.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 04/04/2016] [Accepted: 04/06/2016] [Indexed: 11/23/2022]
Abstract
Methyl gallate (MG) and pentagalloyl glucopyranose (PGG) are bioactive phenolic compounds that possess various pharmacological activities. However, the knowledge of hepatic metabolism of MG and PGG is limited. The purpose of this study was to investigate the in vitro glucuronidation of MG and PGG using liver microsomes from human (HLMs) and rats (Sprague-Dawley, SDRLMs; Wistar, WRLMs; and Gunn, GRLMs), and recombinant human uridine 5'-diphospho-glucuronosyltransferases (UGT) 1A1 and 1A9. The results demonstrated that liver microsomes catalyzed two mono-glucuronided MG (M1 and M2) formations but that UGT1A1 and 1A9 catalyzed only M1 formation. For PGG, a mono-glucuronided metabolite was mediated by liver microsomes or UGT1A9. However, a PGG glucuronide was absent in the UGT1A1 system. Additionally, all metabolites showed susceptibility to β-glucuronidases. Furthermore, the glucuronidation activities of PGG were lower than those of MG. The kinetic parameters of MG glucuronidation demonstrated that the SDRLMs and GRLMs were more similar to the HLMs than the WRLMs for the formations of M1 and M2, respectively and that the SDRLMs and HLMs preferentially contributed to M1, whereas the WRLMs and GRLMs showed the favored formation of M2. In conclusion, MG and PGG were subjectively glucuronided by liver microsomes to demonstrate species- and strain-dependent metabolism.
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Zhang T, Dong D, Lu D, Wang S, Wu B. Cremophor EL-based nanoemulsion enhances transcellular permeation of emodin through glucuronidation reduction in UGT1A1-overexpressing MDCKII cells. Int J Pharm 2016; 501:190-8. [PMID: 26850314 DOI: 10.1016/j.ijpharm.2016.01.067] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 01/18/2016] [Accepted: 01/27/2016] [Indexed: 12/18/2022]
Abstract
Oral emodin, a natural anthraquinone and active component of many herbal medicines, is poorly bioavailable because of extensive first-pass glucuronidation. Here we aimed to prepare emodin nanoemulsion (EMO-NE) containing cremophor EL, and to assess its potential for enhancing transcellular absorption of emodin using UGT1A1-overexpressing MDCKII cells (or MDCK1A1 cells). EMO-NE was prepared using a modified emulsification technique and subsequently characterized by particle size, morphology, stability, and drug release. MDCKII cells were stably transfected with UGT1A1 using the lentiviral transfection approach. Emodin transport and metabolism were evaluated in Transwell-cultured MDCK1A1 cells after apical dosing of EMO-NE or control solution. The obtained EMO-NE (116 ± 6.5 nm) was spherical and stable for at least 2 months. Emodin release in vitro was a passive diffusion-driven process. EMO-NE administration increased the apparent permeability of emodin by a 2.3-fold (p<0.001) compared to the pure emodin solution (1.2 × 10(-5) cm/s vs 5.3 × 10(-6) cm/s). Further, both apical and basolateral excretion of emodin glucuronide (EMO-G) were significantly decreased (≥56.5%, p<0.001) in EMO-NE group. This was accompanied by a marked reduction (57.4%, p<0.001) in total emodin glucuronidation. It was found that the reduced glucuronidation was due to inhibition of cellular metabolism by cremophor EL. Cremophor EL inhibited UGT1A1-mediated glucuronidation of emodin using the mixed-type inhibition mechanism. In conclusion, cremophor EL-based nanoemulsion greatly enhanced transcellular permeation of emodin through inhibition of UGT metabolism. This cremophor EL-based nanoformulation may be a promising strategy to improve the oral bioavailability of emodin.
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Affiliation(s)
- Tianpeng Zhang
- Division of Pharmaceutics, College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China
| | - Dong Dong
- Ocular Surface Research Center and Institute of Ophthalmology, Jinan University School of Medicine, Guangzhou, China
| | - Danyi Lu
- Division of Pharmaceutics, College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China
| | - Shuai Wang
- Division of Pharmaceutics, College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China
| | - Baojian Wu
- Division of Pharmaceutics, College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China.
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Wu L, Zhong W, Liu J, Han W, Zhong S, Wei Q, Liu S, Tang L. Human microsomal cyttrochrome P450-mediated reduction of oxysophocarpine, an active and highly toxic constituent derived from Sophora flavescens species, and its intestinal absorption and metabolism in rat. Fitoterapia 2015; 105:26-36. [PMID: 26045316 DOI: 10.1016/j.fitote.2015.05.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 05/27/2015] [Accepted: 05/28/2015] [Indexed: 10/23/2022]
Abstract
Oxysophocarpine (OSC), an active and toxic quinolizidine alkaloid, is highly valued in Sophora flavescens Ait. and Subprostrate sophora Root. OSC is used to treat inflammation and hepatitis for thousands of years in China. This study aims to investigate the CYP450-mediated reduction responsible for metabolizing OSC and to evaluate the absorption and metabolism of OSC in rat in situ. Four metabolites were identified, with sophocarpine (SC) as the major metabolite. SC formation was rapid in human and rat liver microsomes (HLMs and RLMs, respectively). The reduction rates in the liver are two fold higher than in the intestine, both in humans and rats. In HLMs, inhibitors of CYP2C9, 3A4/5, 2D6, and 2B6 had strong inhibitory effects on SC formation. Meanwhile, inhibitors of CYP3A and CYP2D6 had significant inhibition on SC formation in RLMs. Human recombinant CYP3A4/5, 2B6, 2D6, and 2C9 contributed significantly to SC production. The permeability in rat intestine and the excretion rates of metabolites were highest in the duodenum (p<0.05), and the absorbed amount of OSC in duodenum and jejunum was concentration-dependent. The metabolism could be significantly decreased by CYP3A inhibitor ketoconazole. In conclusion, the liver was the main organ responsible for OSC metabolism. First-pass metabolism via CYP3A4/5, 2B6, 2D6, and 2C9 may be the main reason for the poor OSC bioavailability.
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Affiliation(s)
- Lili Wu
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Wanping Zhong
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Junjin Liu
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Weichao Han
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Shilong Zhong
- Medical Research Center of Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510080, China
| | - Qiang Wei
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Institute of Nephrology, Southern Medical University, Guangzhou, China
| | - Shuwen Liu
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China; State Key Laboratory of Organ Failure Research, Guangdong Provincial Institute of Nephrology, Southern Medical University, Guangzhou, China.
| | - Lan Tang
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China; State Key Laboratory of Organ Failure Research, Guangdong Provincial Institute of Nephrology, Southern Medical University, Guangzhou, China.
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Tian X, Huo X, Dong P, Wu B, Wang X, Wang C, Liu K, Ma X. Sulfation of melatonin: Enzymatic characterization, differences of organs, species and genders, and bioactivity variation. Biochem Pharmacol 2015; 94:282-96. [DOI: 10.1016/j.bcp.2015.02.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 02/16/2015] [Accepted: 02/16/2015] [Indexed: 12/20/2022]
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Zhang X, Dong D, Wang H, Ma Z, Wang Y, Wu B. Stable knock-down of efflux transporters leads to reduced glucuronidation in UGT1A1-overexpressing HeLa cells: the evidence for glucuronidation-transport interplay. Mol Pharm 2015; 12:1268-78. [PMID: 25741749 DOI: 10.1021/mp5008019] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Efflux of glucuronide is facilitated by the membrane transporters including BCRP and MRPs. In this study, we aimed to determine the effects of transporter expression on glucuronide efflux and cellular glucuronidation. Single efflux transporter (i.e., BCRP, MRP1, MRP3, or MRP4) was stably knocked-down in UGT1A1-overexpressing HeLa cells. Knock-down of transporters was performed by stable transfection of short-hairpin RNA (shRNA) using lentiviral vectors. Glucuronidation and glucuronide transport in the cells were characterized using three different aglycones (i.e., genistein, apigenin, and emodin) with distinct metabolic activities. BCRP knock-down resulted in significant reductions in excretion of glucuronides (42.9% for genistein glucuronide (GG), 21.1% for apigenin glucuronide (AG) , and 33.7% for emodin glucuronide (EG); p < 0.01) and in cellular glucuronidation (38.3% for genistein, 38.6% for apigenin, and 34.7% for emodin; p < 0.01). Knock-down of a MRP transporter led to substantial decreases in excretion of GG (32.3% for MRP1, 36.7% for MRP3, and 36.6% for MRP4; p < 0.01) and AG (59.3% for MRP1, 24.7% for MRP3, and 34.1% for MRP4; p < 0.01). Also, cellular glucuronidation of genistein (38.3% for MRP1, 32.3% for MRP3, and 31.1% for MRP4; p < 0.01) and apigenin (40.6% for MRP1, 32.4% for MRP3, and 34.6% for MRP4; p < 0.001) was markedly suppressed. By contrast, silencing of MRPs did not cause any changes in either excretion of EG or cellular glucuronidation of emodin. In conclusion, cellular glucuronidation was significantly altered by decreasing expression of efflux transporters, revealing a strong interplay of glucuronidation with efflux transport.
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Affiliation(s)
- Xingwang Zhang
- †Division of Pharmaceutics, College of Pharmacy, and ‡Guangzhou Jinan Biomedicine Research and Development Center, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China
| | | | - Huailing Wang
- †Division of Pharmaceutics, College of Pharmacy, and ‡Guangzhou Jinan Biomedicine Research and Development Center, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China
| | - Zhiguo Ma
- †Division of Pharmaceutics, College of Pharmacy, and ‡Guangzhou Jinan Biomedicine Research and Development Center, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China
| | | | - Baojian Wu
- †Division of Pharmaceutics, College of Pharmacy, and ‡Guangzhou Jinan Biomedicine Research and Development Center, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China
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Sun H, Wang H, Liu H, Zhang X, Wu B. Glucuronidation of capsaicin by liver microsomes and expressed UGT enzymes: reaction kinetics, contribution of individual enzymes and marked species differences. Expert Opin Drug Metab Toxicol 2014; 10:1325-36. [DOI: 10.1517/17425255.2014.954548] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Tian X, Liang S, Wang C, Wu B, Ge G, Deng S, Liu K, Yang L, Ma X. Regioselective glucuronidation of andrographolide and its major derivatives: metabolite identification, isozyme contribution, and species differences. AAPS JOURNAL 2014; 17:156-66. [PMID: 25204783 DOI: 10.1208/s12248-014-9658-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 08/21/2014] [Indexed: 01/16/2023]
Abstract
Andrographolide (AND) and two of its derivatives, deoxyandrographolide (DEO) and dehydroandrographolide (DEH), are widely used in clinical practice as anti-inflammatory agents. However, UDP-glucuronosyltransferase (UGT)-mediated phase II metabolism of these compounds is not fully understood. In this study, glucuronidation of AND, DEO, and DEH was characterized using liver microsomes and recombinant UGT enzymes. We isolated six glucuronides and identified them using 1D and 2D nuclear magnetic resonance (NMR) spectroscopy. We also systematically analyzed various kinetic parameters (K m, V max, and CLint) for glucuronidation of AND, DEO, and DEH. Among 12 commercially available UGT enzymes, UGT1A3, 1A4, 2B4, and 2B7 exhibited metabolic activities toward AND, DEO, and DEH. Further, UGT2B7 made the greatest contribution to glucuronidation of all three anti-inflammatory agents. Regioselective glucuronidation showed considerable species differences. 19-O-Glucuronides were present in liver microsomes from all species except rats. 3-O-Glucuronides were produced by pig and cynomolgus monkey liver microsomes for all compounds, and 3-O-glucuronide of DEH was detected in mouse and rat liver microsomes (RLM). Variations in K m values were 48.6-fold (1.93-93.6 μM) and 49.5-fold (2.01-99.1 μM) for 19-O-glucuronide and 3-O-glucuronide formation, respectively. Total intrinsic clearances (CLint) for 3-O- and 19-O-glucuronidation varied 4.8-fold (22.7-110 μL min(-1) mg(-1)), 10.6-fold (94.2-991 μL min(-1) mg(-1)), and 8.3-fold (122-1,010 μL min(-1) mg(-1)), for AND, DEH, and DEO, respectively. Our results indicate that UGT2B7 is the major UGT enzyme involved in the metabolism of AND, DEO, and DEH. Metabolic pathways in the glucuronidation of AND, DEO, and DEH showed considerable species differences.
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Affiliation(s)
- Xiangge Tian
- College of Pharmacy, Academy of Integrative Medicine, Dalian Medical University, Dalian, 116044, China
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In vitro glucuronidation of five rhubarb anthraquinones by intestinal and liver microsomes from humans and rats. Chem Biol Interact 2014; 219:18-27. [DOI: 10.1016/j.cbi.2014.05.006] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 05/05/2014] [Accepted: 05/11/2014] [Indexed: 11/23/2022]
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Liu W, Kulkarni K, Hu M. Gender-dependent differences in uridine 5'-diphospho-glucuronosyltransferase have implications in metabolism and clearance of xenobiotics. Expert Opin Drug Metab Toxicol 2013; 9:1555-69. [DOI: 10.1517/17425255.2013.829040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Dellinger RW, Gomez Garcia AM, Meyskens FL. Differences in the glucuronidation of resveratrol and pterostilbene: altered enzyme specificity and potential gender differences. Drug Metab Pharmacokinet 2013; 29:112-9. [PMID: 23965644 PMCID: PMC4487664 DOI: 10.2133/dmpk.dmpk-13-rg-012] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Resveratrol, a natural polyphenol found in grapes, berries and other plants, has been proposed as an ideal chemopreventative agent due to its plethora of health promoting activities. However, despite its lofty promise as a cancer prevention agent its success in human clinical trials has been limited due to its poor bioavailability. Thus, interest in other natural polyphenols is intensifying including the naturally occurring dimethylated analog of resveratrol, pterostilbene. The UDP-glucuronosyltransferase (UGT) family of enzymes plays a vital role in the metabolism of both resveratrol and pterostilbene. The current study sought to elucidate the UGT family members responsible for the metabolism of pterostilbene and to examine gender differences in the glucuronidation of resveratrol and pterostilbene. We demonstrate that UGT1A1 and UGT1A3 are mainly responsible for pterostilbene glucuronidation although UGT1A8, UGT1A9 and UGT1A10 also had detectable activity. Intriguingly, UGT1A1 exhibits the highest activity against both resveratrol and pterostilbene despite altered hydroxyl group specificity. Using pooled human liver microsomes, enzyme kinetics were determined for pterostilbene and resveratrol glucuronides. In all cases females were more efficient than males, indicating potential gender differences in stilbene metabolism. Importantly, the glucuronidation of pterostilbene is much less efficient than that of resveratrol, indicating that pterostilbene will have dramatically decreased metabolism in humans.
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Affiliation(s)
- Ryan W. Dellinger
- Chao Family Comprehensive Cancer Center, Department of Medicine, University of California Irvine, Irvine, CA, USA
- Department of Medicine, University of California Irvine, Irvine, CA, USA
- Department of Epidemiology, University of California Irvine, Irvine, CA, USA
| | - Angela M. Gomez Garcia
- Chao Family Comprehensive Cancer Center, Department of Medicine, University of California Irvine, Irvine, CA, USA
- Department of Medicine, University of California Irvine, Irvine, CA, USA
| | - Frank L. Meyskens
- Chao Family Comprehensive Cancer Center, Department of Medicine, University of California Irvine, Irvine, CA, USA
- Department of Medicine, University of California Irvine, Irvine, CA, USA
- Department of Biological Chemistry, University of California Irvine, Irvine, CA, USA
- Department of Public Health, University of California Irvine, Irvine, CA, USA
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Wei Y, Wu B, Jiang W, Yin T, Jia X, Basu S, Yang G, Hu M. Revolving door action of breast cancer resistance protein (BCRP) facilitates or controls the efflux of flavone glucuronides from UGT1A9-overexpressing HeLa cells. Mol Pharm 2013; 10:1736-50. [PMID: 23402418 DOI: 10.1021/mp300562q] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Cellular production of flavonoid glucuronides requires the action of both UDP-glucuronosyltransferases (UGT) and efflux transporters since glucuronides are too hydrophilic to diffuse across the cellular membrane. We determined the kinetics of efflux of 13 flavonoid glucuronides using the newly developed HeLa-UGT1A9 cells and correlated them with kinetic parameters derived using expressed UGT1A9. The results indicated that, among the seven monohydroxylflavones (HFs), there was moderately good correlation (r(2) ≥ 0.65) between the fraction metabolized (fmet) derived from HeLa-UGT1A9 cells and CLint derived from the UGT1A9-mediated metabolism. However, there was weak or no correlation between these two parameters for six dihydroxylflavones (DHFs). Furthermore, there was weak or no correlation between various kinetic parameters (Km, Vmax, or CLint) for the efflux and the metabolism regardless of whether we were using seven HFs, six DHFs, or a combination thereof. Instead, the cellular excretion of many flavonoid glucuronides appears to be controlled by the efflux transporter, and the poor affinity of glucuronide to the efflux transporter resulted in major intracellular accumulation of glucuronides to a level that is above the dosing concentration of its aglycone. Hence, the efflux transporters appear to act as the "Revolving Door" to control the cellular excretion of glucuronides. In conclusion, the determination of a flavonoid's susceptibility to glucuronidation must be based on both its susceptibility to glucuronidation by the enzyme and resulting glucuronide's affinity to the relevant efflux transporters, which act as the "Revolving Door(s)" to facilitate or control its removal from the cells.
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Affiliation(s)
- Yingjie Wei
- Key Laboratory of New Drug Delivery System of Chinese Materia Medica, Jiangsu Provincial Academy of Chinese Medicine, 100 Shizi Street, Nanjing 210028, China
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Serra A, Bryant N, Motilva MJ, Blumberg JB, Chen CYO. Fetal programming of dietary fructose and saturated fat on hepatic quercetin glucuronidation in rats. Nutrition 2012; 28:1165-71. [DOI: 10.1016/j.nut.2012.04.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Revised: 04/18/2012] [Accepted: 04/18/2012] [Indexed: 01/24/2023]
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Liu W, Feng Q, Li Y, Ye L, Hu M, Liu Z. Coupling of UDP-glucuronosyltransferases and multidrug resistance-associated proteins is responsible for the intestinal disposition and poor bioavailability of emodin. Toxicol Appl Pharmacol 2012; 265:316-24. [PMID: 22982073 DOI: 10.1016/j.taap.2012.08.032] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Revised: 08/29/2012] [Accepted: 08/31/2012] [Indexed: 11/16/2022]
Abstract
Emodin is a poorly bioavailable but promising plant-derived anticancer drug candidate. The low oral bioavailability of emodin is due to its extensive glucuronidation in the intestine and liver. Caco-2 cell culture model was used to investigate the interplay between UDP-glucuronosyltransferases (UGTs) and efflux transporters in the intestinal disposition of emodin. Bidirectional transport assays of emodin at different concentrations were performed in the Caco-2 monolayers with or without multidrug resistance-associated protein (MRP) and breast cancer resistance protein (BCRP) efflux transporter chemical inhibitors. The bidirectional permeability of emodin and its glucuronide in the Caco-2 monolayers was determined. Emodin was rapidly metabolized to emodin glucuronide in Caco-2 cells. LTC4, a potent inhibitor of MRP2, decreased the efflux of emodin glucuronide and also substantially increased the intracellular glucuronide level in the basolateral-to-apical (B-A) direction. MK-571, chemical inhibitor of MRP2, MRP3, and MRP4, significantly reduced the efflux of glucuronide in the apical-to-basolateral (A-B) and B-A directions in a dose-dependent manner. However, dipyridamole, a BCRP chemical inhibitor demonstrated no effect on formation and efflux of emodin glucuronide in Caco-2 cells. In conclusion, UGT is a main metabolic pathway for emodin in the intestine, and the MRP family is composed of major efflux transporters responsible for the excretion of emodin glucuronide in the intestine. The coupling of UGTs and MRP efflux transporters causes the extensive metabolism, excretion, and low bioavailability of emodin.
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Affiliation(s)
- Wei Liu
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong, China
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Yang CH, Tang L, Lv C, Ye L, Xia BJ, Hu M, Liu ZQ. Sulfation of selected mono-hydroxyflavones by sulfotransferases in vitro: a species and gender comparison. ACTA ACUST UNITED AC 2011; 63:967-70. [PMID: 21635263 DOI: 10.1111/j.2042-7158.2011.01298.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Sulfation via sulfotransferases is an important metabolic pathway contributing to the low bioavailability of flavonoids. This study aims to characterize the sulfation of mono-hydroxyflavones (MHFs) to obtain useful information on structure-metabolizing relationships in animal species and gender differences. METHODS Three representative MHFs, namely, 7-, 6- and 4'-MHF, were studied by incubating each MHF at different concentrations with various liver S9 fractions (mouse, rat, dog and human). KEY FINDINGS One mono-sulfate was identified for each MHF. 7-MHF and 4'-MHF usually have greater sulfations than 6-MHF. Regardless of whether the S9 fraction came from a male or female, there was a difference in sulfation in the species observed for all MHFs; the highest activity of sulfotransferases was in dog S9. Furthermore, gender differences affect sulfation of MHFs significantly. In rats, all sulfations for the three MHFs were higher in males than that in females while the opposite was observed in mice. CONCLUSIONS Regiospecific, species and gender dependence exist in the sulfonation of all selected MHFs.
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Affiliation(s)
- Cai Hua Yang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong, China
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Wu B, Kulkarni K, Basu S, Zhang S, Hu M. First-pass metabolism via UDP-glucuronosyltransferase: a barrier to oral bioavailability of phenolics. J Pharm Sci 2011; 100:3655-81. [PMID: 21484808 DOI: 10.1002/jps.22568] [Citation(s) in RCA: 204] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Revised: 03/10/2011] [Accepted: 03/10/2011] [Indexed: 12/11/2022]
Abstract
Glucuronidation mediated by UDP-glucuronosyltransferases (UGTs) is a significant metabolic pathway that facilitates efficient elimination of numerous endobiotics and xenobiotics, including phenolics. UGT genetic deficiency and polymorphisms or inhibition of glucuronidation by concomitant use of drugs are associated with inherited physiological disorders or drug-induced toxicities. Moreover, extensive glucuronidation can be a barrier to oral bioavailability as the first-pass glucuronidation (or premature clearance by UGTs) of orally administered agents usually results in the poor oral bioavailability and lack of efficacies. This review focused on the first-pass glucuronidation of phenolics including natural polyphenols and pharmaceuticals. The complexity of UGT-mediated metabolism of phenolics is highlighted with species-, gender-, organ- and isoform-dependent specificity, as well as functional compensation between UGT1A and 2B subfamily. In addition, recent advances are discussed with respect to the mechanisms of enzymatic actions, including the important properties such as binding pocket size and phosphorylation requirements.
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Affiliation(s)
- Baojian Wu
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, Texas 77030, USA
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50
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Liu W, Zheng Z, Liu X, Gao S, Ye L, Yang Z, Hu M, Liu Z. Sensitive and robust UPLC-MS/MS method to determine the gender-dependent pharmacokinetics in rats of emodin and its glucuronide. J Pharm Biomed Anal 2010; 54:1157-62. [PMID: 21195574 DOI: 10.1016/j.jpba.2010.12.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2010] [Revised: 11/30/2010] [Accepted: 12/03/2010] [Indexed: 10/18/2022]
Abstract
In this study, a sensitive and robust ultraperformance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method was developed, validated, and applied to determine gender-dependent pharmacokinetics of total emodin (aglycone+glucuronide) in male and female Sprague-Dawley rats. The lower limit of quantification for emodin and emodin glucuronide in rat plasma was 39 and 78 ng/ml, with signal-to-noise ratio of ≥ 10. Precision and accuracy studies showed emodin and emodin glucuronide plasma concentrations well within the 10% range in all studies. Plasma recovery of emodin and emodin glucuronide was always above 86% for low (emodin: 39 ng/ml; glucuronide: 78 ng/ml), 92% for medium (625 ng/ml), and 97% for high (10000 ng/ml) concentrations. Furthermore, emodin showed more than 95% plasma stability under short-term and long-term storage conditions, as well as after three freeze-thaw cycles in the experiments. The developed and validated analytical method was successfully applied to study the gender-dependent 10-fold higher oral bioavailability of total emodin in male than female rats. The oral bioavailability of emodin and emodin glucuronide was also measured separately and showed a statistically significant gender difference in oral bioavailability of emodin and emodin glucuronide in rats.
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Affiliation(s)
- Wei Liu
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China
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