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Mahomoodally MF, Coodian K, Hosenally M, Zengin G, Shariati MA, Abdalla AN, Alhazmi HA, Khuwaja G, Mohan S, Khalid A. Herbal remedies in the management of hyperuricemia and gout: A review of in vitro, in vivo and clinical evidences. Phytother Res 2024; 38:3370-3400. [PMID: 38655878 DOI: 10.1002/ptr.8211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 03/31/2024] [Accepted: 04/02/2024] [Indexed: 04/26/2024]
Abstract
Gout, or hyperuricemia is a multifactorial and multi-faceted metabolic disease that is quite difficult to manage and/or treat. Conventional therapies such as non-steroidal anti-inflammatory drugs (NSAIDs) such as allopurinol, corticosteroids and colchicine amongst others, have helped in its management and treatment to some extent. This study aimed to compile and analyze the different herbal remedies used in the management of hyperuricemia and gout. A literature search was conducted from key databases (PubMed, ScienceDirect, Cochrane Library, Google Scholar) using relevant keywords via the PRISMA model. Smilax riparia A.DC. from Traditional Chinese Medicine is used in many countries for its therapeutic effect on lowering serum urate levels. No single study was able to establish the efficacy of a specific traditionally used herb via in vitro, in vivo, and clinical studies. Patients were found to use a panoply of natural remedies, mainly plants to treat hyperuricemia and gout, which have been validated to some extent by in vitro, in vivo, and clinical studies. Nonetheless, further research is needed to better understand the ethnopharmacological relationship of such herbal remedies.
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Affiliation(s)
- Mohamad Fawzi Mahomoodally
- Institute of Research and Development, Duy Tan University, Da Nang, Vietnam
- School of Engineering & Technology, Duy Tan University, Da Nang, Vietnam
| | - Kaisavadee Coodian
- Department of Health Sciences, Faculty of Medicine and Health Sciences, University of Mauritius, Réduit, Mauritius
| | - Muzzammil Hosenally
- Department of Economics and Statistics, Faculty of Social Sciences & Humanities, University of Mauritius, Réduit, Mauritius
| | - Gokhan Zengin
- Department of Biology, Faculty of Science, Selcuk University, Konya, Turkey
| | - Mohammad Ali Shariati
- Semey Branch of the Institute, Kazakh Research Institute of Processing and Food Industry, Almaty, Kazakhstan
| | - Ashraf N Abdalla
- Department of Pharmacology and Toxicology, College of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Hassan A Alhazmi
- Substance Abuse and Toxicology Research Center, Jazan University, Jazan, Saudi Arabia
- Department of Pharmaceutical Chemistry and Pharmacognosy, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Gulrana Khuwaja
- Department of Pharmaceutical Chemistry and Pharmacognosy, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Syam Mohan
- Substance Abuse and Toxicology Research Center, Jazan University, Jazan, Saudi Arabia
- School of Health Sciences, University of Petroleum and Energy Studies, Dehradun, India
| | - Asaad Khalid
- Substance Abuse and Toxicology Research Center, Jazan University, Jazan, Saudi Arabia
- Medicinal and Aromatic Plants and Traditional Medicine Research Institute, National Center for Research, Khartoum, Sudan
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2
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Chen Y, Li H, Cai Y, Wang K, Wang Y. Anti-hyperuricemia bioactive peptides: a review on obtaining, activity, and mechanism of action. Food Funct 2024; 15:5714-5736. [PMID: 38752330 DOI: 10.1039/d4fo00760c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Hyperuricemia, a disorder of uric acid metabolism, serves as a significant risk factor for conditions such as hypertension, diabetes mellitus, renal failure, and various metabolic syndromes. The main contributors to hyperuricemia include overproduction of uric acid in the liver or impaired excretion in the kidneys. Despite traditional clinical drugs being employed for its treatment, significant health concerns persist. Recently, there has been growing interest in utilizing protein peptides sourced from diverse food origins to mitigate hyperuricemia. This article provides a comprehensive review of bioactive peptides with anti-hyperuricemia properties derived from animals, plants, and their products. We specifically outline the methods for preparing these peptides from food proteins and elucidate their efficacy and mechanisms in combating hyperuricemia, supported by in vitro and in vivo evidence. Uric acid-lowering peptides offer promising prospects due to their safer profile, enhanced efficacy, and improved bioavailability. Therefore, this review underscores significant advancements and contributions in identifying peptides capable of metabolizing purine and/or uric acid, thereby alleviating hyperuricemia. Moreover, it offers a theoretical foundation for the development of functional foods incorporating uric acid-lowering peptides.
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Affiliation(s)
- Ying Chen
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Beijing, China
| | - Hongyan Li
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Beijing, China
| | - Yunfei Cai
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Beijing, China
| | - Ke Wang
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Beijing, China
- Institute of Modern Fermentation Engineering and Future Foods, Guangxi University, Nanning, 530004, China
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
- Rizhao Huawei Institute of Comprehensive Health Industries, Shandong Keepfit Biotech. Co. Ltd., Rizhao, 276800, China
| | - Yousheng Wang
- Institute of Modern Fermentation Engineering and Future Foods, Guangxi University, Nanning, 530004, China
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
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3
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Wu C, Wong AR, Chen Q, Yang S, Chen M, Sun X, Zhou L, Liu Y, Yang AWH, Bi J, Hung A, Li H, Zhao X. Identification of inhibitors from a functional food-based plant Perillae Folium against hyperuricemia via metabolomics profiling, network pharmacology and all-atom molecular dynamics simulations. Front Endocrinol (Lausanne) 2024; 15:1320092. [PMID: 38435751 PMCID: PMC10905266 DOI: 10.3389/fendo.2024.1320092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 01/17/2024] [Indexed: 03/05/2024] Open
Abstract
Introduction Hyperuricemia (HUA) is a metabolic disorder caused by purine metabolism dysfunction in which the increasing purine levels can be partially attributed to seafood consumption. Perillae Folium (PF), a widely used plant in functional food, has been historically used to mitigate seafood-induced diseases. However, its efficacy against HUA and the underlying mechanism remain unclear. Methods A network pharmacology analysis was performed to identify candidate targets and potential mechanisms involved in PF treating HUA. The candidate targets were determined based on TCMSP, SwissTargetPrediction, Open Targets Platform, GeneCards, Comparative Toxicogenomics Database, and DrugBank. The potential mechanisms were predicted via Gene Ontology (GO) and Kyoto Gene and Genome Encyclopedia (KEGG) analyses. Molecular docking in AutoDock Vina and PyRx were performed to predict the binding affinity and pose between herbal compounds and HUA-related targets. A chemical structure analysis of PF compounds was performed using OSIRIS DataWarrior and ClassyFire. We then conducted virtual pharmacokinetic and toxicity screening to filter potential inhibitors. We further performed verifications of these inhibitors' roles in HUA through molecular dynamics (MD) simulations, text-mining, and untargeted metabolomics analysis. Results We obtained 8200 predicted binding results between 328 herbal compounds and 25 potential targets, and xanthine dehydrogenase (XDH) exhibited the highest average binding affinity. We screened out five promising ligands (scutellarein, benzyl alpha-D-mannopyranoside, elemol, diisobutyl phthalate, and (3R)-hydroxy-beta-ionone) and performed MD simulations up to 50 ns for XDH complexed to them. The scutellarein-XDH complex exhibited the most satisfactory stability. Furthermore, the text-mining study provided laboratory evidence of scutellarein's function. The metabolomics approach identified 543 compounds and confirmed the presence of scutellarein. Extending MD simulations to 200 ns further indicated the sustained impact of scutellarein on XDH structure. Conclusion Our study provides a computational and biomedical basis for PF treating HUA and fully elucidates scutellarein's great potential as an XDH inhibitor at the molecular level, holding promise for future drug design and development.
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Affiliation(s)
- Chuanghai Wu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Ann Rann Wong
- School of Health and Biomedical Sciences, STEM College, RMIT University, Bundoora, VIC, Australia
| | - Qinghong Chen
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Shuxuan Yang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Meilin Chen
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Xiaomin Sun
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Lin Zhou
- Endocrinology Department, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yanyan Liu
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Angela Wei Hong Yang
- School of Health and Biomedical Sciences, STEM College, RMIT University, Bundoora, VIC, Australia
| | - Jianlu Bi
- Endocrinology Department, Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, China
| | - Andrew Hung
- School of Science, STEM College, RMIT University, Melbourne, VIC, Australia
| | - Hong Li
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
- School of Science, STEM College, RMIT University, Melbourne, VIC, Australia
| | - Xiaoshan Zhao
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
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Potent Xanthine Oxidase Inhibitory Activity of Constituents of Agastache rugosa (Fisch. and C.A.Mey.) Kuntze. Foods 2023; 12:foods12030573. [PMID: 36766102 PMCID: PMC9914411 DOI: 10.3390/foods12030573] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 01/20/2023] [Accepted: 01/21/2023] [Indexed: 02/01/2023] Open
Abstract
The aerial parts of Agastache rugosa are used as a food material and traditional medicine in Asia. A 50% ethanol extract exhibited potent xanthine oxidase (XO) inhibitory activity (IC50 = 32.4 µg/mL). To investigate the major components responsible for this effect, seven known compounds were identified from A. rugosa; among these, salvianolic acid B (2) was isolated from this plant for the first time. Moreover, acacetin (7) exhibited the most potent inhibitory activity with an IC50 value of 0.58 µM, lower than that of allopurinol (IC50 = 4.2 µM), which is commonly used as a XO inhibitor. Comparative activity screening revealed that the C6-bonded monosaccharides (3) or sugars substituted with acetyl or malonyl groups (4-6) are critical for XO inhibition when converted to aglycone (7). The most potent inhibitor (7) in the A. rugosa extract (ARE) exhibited mixed-type inhibition kinetics and reversible inhibition toward XO. Furthermore, the hydrolysis of ARE almost converted to an inhibitor (7), which displayed the highest efficacy; UPLC-qTof MS revealed an increased content, up to five times more compared with that before treatment. This study will contribute to the enhancement in the industrial value of ARE hydrolysates as a functional ingredient and natural drug toward the management of hyperuricemia and treatment of gout.
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Chen N, Wang R, Li H, Wang W, Wang L, Yin X, Yao R, Yang B. Flavonoid extract of saffron by-product alleviates hyperuricemia via inhibiting xanthine oxidase and modulating gut microbiota. Phytother Res 2022; 36:4604-4619. [PMID: 36482025 DOI: 10.1002/ptr.7579] [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: 03/28/2022] [Revised: 07/04/2022] [Accepted: 07/15/2022] [Indexed: 12/13/2022]
Abstract
Hyperuricemia was associated with the overproduction or inadequate excretion of uric acid, while its association with gut microbiota has emerged although few studies were focused on it. Previously, we have reported a flavonoid extract from saffron floral bio-residues lowered uric acid in potassium oxonate-induced hyperuricemic mice. In this study, the impacts of the flavonoid extract on potassium oxonate-induced hyperuricemic rats were evaluated through its effects on serum, renal, intestinal uric acid, and xanthine oxidase activity. At the same time, the microbial and metabolic features of the flavonoid extract against hyperuricemia were explored using 16S rRNA sequencing techniques and serum metabolomics, respectively. According to the results, the flavonoid extract lowered serum and intestinal uric acid levels in hyperuricemic rats without kidney damage. On the one hand, it inhibited serum and liver xanthine oxidase activities and down-regulated the expression of hepatic xanthine oxidase. On the other hand, it ameliorated the hyperuricemia-associated gut microbiota dysbiosis and alleviated the disturbance of serum metabolome, especially of lipid and amino acid metabolites. The results suggested that the flavonoid extract of saffron floral bio-residues exerts a potent antihyperuricemia effect by inhibiting xanthine oxidase to decrease uric acid production and modulating gut microbiota related to host metabolism.
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Affiliation(s)
- Na Chen
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Ran Wang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Hua Li
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Weihao Wang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Lan Wang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiaojie Yin
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Rongmei Yao
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Bin Yang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
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6
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Jiang L, Wu Y, Qu C, Lin Y, Yi X, Gao C, Cai J, Su Z, Zeng H. Hypouricemic effect of gallic acid, a bioactive compound from Sonneratia apetala leaves and branches, on hyperuricemic mice. Food Funct 2022; 13:10275-10290. [PMID: 36125096 DOI: 10.1039/d2fo02068h] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As a tropical medicinal plant, Sonneratia apetala is mainly distributed in the southeast coastal areas of China. Recently, the hypouricemic effect of Sonneratia apetala leaves and branches (SAL) has been reported, but the active compound and its mechanism are unclear. Thus, this study aims to explore the effective fraction of SAL and the mechanism of its active compound on uric acid formation and excretion. SAL was extracted with ethyl acetate and concentrated to obtain solvent-free extracts (SAL-EA). The remains fraction (SAL-E) and the supernatant fraction (SAL-S) of SAL resulting from water extraction and alcohol precipitation were collected and dried. The effects of different fractions were explored on hyperuricemic mice. SAL-S showed excellent activities in decreasing the levels of uric acid (UA), blood urea nitrogen (BUN), and creatinine (CRE) in serum and in attenuating kidney damage. Then, the active compound gallic acid (GA) identified by HPLC was assayed for its mechanism of regulating uric acid metabolism in hyperuricemic mice. The hypouricemic effect of GA was probably associated with the downregulation of URAT1 and GLUT9, upregulation of ABCG2 and decreased activities of adenosine deaminase (ADA) and xanthine oxidase (XOD). Moreover, GA suppressed the level of MDA, IL-6, IL-1β, TNF-α, TGF-β1, COX-2 and cystatin-C (Cys-C), and enhanced the activities of SOD, GSH-Px, CAT, and Na+-K+-ATPase (NKA) in the kidneys. These results indicated that GA protects against hyperuricemia-induced kidney injury via suppressing oxidative stress and inflammation as well as decreasing the serum levels of UA by regulating urate transporters.
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Affiliation(s)
- Linyun Jiang
- The First Affiliated Hospital of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510006, People's Republic of China.
| | - Yulin Wu
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, People's Republic of China. .,School of Chinese Medicine, Faculty of Medicine, the Chinese University of Hong Kong, Hong Kong SAR, China
| | - Chang Qu
- College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510006, People's Republic of China
| | - Yinsi Lin
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, People's Republic of China.
| | - Xiaoqing Yi
- Guangdong Academy of Forestry, Guangzhou, 510520, People's Republic of China
| | - Changjun Gao
- Guangdong Academy of Forestry, Guangzhou, 510520, People's Republic of China.,Guangdong Provincial Key Laboratory of Silviculture, Protection and Utilization, Guangzhou, 510520, People's Republic of China
| | - Jian Cai
- Guangdong Academy of Forestry, Guangzhou, 510520, People's Republic of China.,Guangdong Provincial Key Laboratory of Silviculture, Protection and Utilization, Guangzhou, 510520, People's Republic of China
| | - Ziren Su
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, People's Republic of China.
| | - Huifang Zeng
- The First Affiliated Hospital of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510006, People's Republic of China.
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7
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Li J, Li J, Fan L. Recent Advances in Alleviating Hyperuricemia Through Dietary Sources: Bioactive Ingredients and Structure–activity Relationships. FOOD REVIEWS INTERNATIONAL 2022. [DOI: 10.1080/87559129.2022.2124414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Jun Li
- State Key laboratory of Food Science & Technology, Jiangnan University, Wuxi, Jiangsu, China
- Institute of Food Processing Technology, Guizhou Academy of Agricultural Sciences, Guiyang, China
| | - Jinwei Li
- State Key laboratory of Food Science & Technology, Jiangnan University, Wuxi, Jiangsu, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Liuping Fan
- State Key laboratory of Food Science & Technology, Jiangnan University, Wuxi, Jiangsu, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
- Collaborat Innovat Ctr Food Safety & Qual Control, Jiangnan University, Wuxi, Jiangsu, China
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8
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Li J, Gong Y, Li J, Fan L. In vitro xanthine oxidase inhibitory properties of Flos Sophorae Immaturus and potential mechanisms. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101711] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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Chen C, Hsu F, Tsai S, Lee S. Bioactive constituents from
Mesona chinensis
: Chemical evidence for its antihyperuricemic activity. J CHIN CHEM SOC-TAIP 2022. [DOI: 10.1002/jccs.202200003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chien‐Yi Chen
- School of Pharmacy, College of Medicine National Taiwan University Taipei Taiwan, Republic of China
| | - Fu‐Chun Hsu
- School of Pharmacy, College of Medicine National Taiwan University Taipei Taiwan, Republic of China
| | - Sheng‐Fa Tsai
- School of Pharmacy, College of Medicine National Taiwan University Taipei Taiwan, Republic of China
| | - Shoei‐Sheng Lee
- School of Pharmacy, College of Medicine National Taiwan University Taipei Taiwan, Republic of China
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10
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Orhan IE, Deniz FSS. Natural Products and Extracts as Xantine Oxidase Inhibitors - A Hope for Gout Disease? Curr Pharm Des 2021; 27:143-158. [PMID: 32723252 DOI: 10.2174/1381612826666200728144605] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 06/25/2020] [Indexed: 11/22/2022]
Abstract
Xanthine oxidase (EC 1.17.3.2) (XO) is one of the main enzymatic sources that create reactive oxygen species (ROS) in the living system. It is a dehydrogenase enzyme that performs electron transfer to nicotinamide adenine dinucleotide (NAD+), while oxidizing hypoxanthin, which is an intermediate compound in purine catabolism, first to xanthine and then to uric acid. XO turns into an oxidant enzyme that oxidizes thiol groups under certain stress conditions in the tissue. The last metabolic step, in which hypoxanthin turns into uric acid, is catalyzed by XO. Uric acid, considered a waste product, can cause kidney stones and gouty-type arthritis as it is crystallized, when present in high concentrations. Thus, XO inhibitors are one of the drug classes used against gout, a purine metabolism disease that causes urate crystal storage in the joint and its surroundings caused by hyperuricemia. Urate-lowering therapy includes XO inhibitors that reduce uric acid production as well as uricosuric drugs that increase urea excretion. Current drugs that obstruct uric acid synthesis through XO inhibition are allopurinol, febuxostat, and uricase. However, since the side effects, safety and tolerability problems of some current gout medications still exist, intensive research is ongoing to look for new, effective, and safer XO inhibitors of natural or synthetic origins for the treatment of the disease. In the present review, we aimed to assess in detail XO inhibitory capacities of pure natural compounds along with the extracts from plants and other natural sources via screening Pubmed, Web of Science (WoS), Scopus, and Google Academic. The data pointed out to the fact that natural products, particularly phenolics such as flavonoids (quercetin, apigenin, and scutellarein), tannins (agrimoniin and ellagitannin), chalcones (melanoxethin), triterpenes (ginsenoside Rd and ursolic acid), stilbenes (resveratrol and piceatannol), alkaloids (berberin and palmatin) have a great potential for new XO inhibitors capable of use against gout disease. In addition, not only plants but other biological sources such as microfungi, macrofungi, lichens, insects (silk worms, ants, etc) seem to be the promising sources of novel XO inhibitors.
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Affiliation(s)
- Ilkay E Orhan
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey
| | - Fatma S S Deniz
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey
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11
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Fast dereplication of xanthine oxidase-inhibiting compounds in alfalfa using comparative metabolomics. Food Res Int 2021; 141:110170. [DOI: 10.1016/j.foodres.2021.110170] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 01/07/2021] [Accepted: 01/19/2021] [Indexed: 02/06/2023]
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12
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Identification and characterization of potential antioxidant components in Isodon amethystoides (Benth.) Hara tea leaves by UPLC-LTQ-Orbitrap-MS. Food Chem Toxicol 2021; 148:111961. [DOI: 10.1016/j.fct.2020.111961] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 12/20/2020] [Accepted: 12/24/2020] [Indexed: 12/19/2022]
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13
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Chen L, Luo Z, Wang M, Cheng J, Li F, Lu H, He Q, You Y, Zhou X, Kwan HY, Zhao X, Zhou L. The Efficacy and Mechanism of Chinese Herbal Medicines in Lowering Serum Uric Acid Levels: A Systematic Review. Front Pharmacol 2021; 11:578318. [PMID: 33568990 PMCID: PMC7868570 DOI: 10.3389/fphar.2020.578318] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 12/21/2020] [Indexed: 12/23/2022] Open
Abstract
Background. Chinese herbal medicines are widely used to lower serum uric acid levels. However, no systemic review summarizes and evaluates their efficacies and the underlying mechanisms of action. Objectives. To evaluate the clinical and experimental evidences for the effectiveness and the potential mechanism of Chinese herbal medicines in lowering serum uric acid levels. Methods. Four electronic databases PubMed, Wed of Science, the Cochrane Library and Embase were used to search for Chinese herbal medicines for their effects in lowering serum uric acid levels, dated from 1 January 2009 to 19 August 2020. For clinical trials, randomized controlled trials (RCTs) were included; and for experimental studies, original articles were included. The methodological quality of RCTs was assessed according to the Cochrane criteria. For clinical trials, a meta-analysis of continuous variables was used to obtain pooled effects. For experimental studies, lists were used to summarize and integrate the mechanisms involved. Results. A total of 10 clinical trials and 184 experimental studies were included. Current data showed that Chinese herbal medicines have promising clinical efficacies in patients with elevated serum uric acid levels (SMD: −1.65, 95% CI: −3.09 to −0.22; p = 0.024). There was no significant difference in serum uric acid levels between Chinese herbal medicine treatments and Western medicine treatments (SMD: −0.13, 95% CI: −0.99 to 0.74; p = 0.772). Experimental studies revealed that the mechanistic signaling pathways involved in the serum uric acid lowering effects include uric acid synthesis, uric acid transport, inflammation, renal fibrosis and oxidative stress. Conclusions. The clinical studies indicate that Chinese herbal medicines lower serum uric acid levels. Further studies with sophisticated research design can further demonstrate the efficacy and safety of these Chinese herbal medicines in lowering serum uric acid levels and reveal a comprehensive picture of the underlying mechanisms of action.
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Affiliation(s)
- Liqian Chen
- Department of Traditional Chinese Medicine, Zhujiang Hospital of Southern Medical University, Guangzhou, China.,Syndrome Laboratory of Integrated Chinese and Western Medicine, School of Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Zhengmao Luo
- Department of Nephrology, General Hospital of Southern Theatre Command, PLA, Guangzhou, China
| | - Ming Wang
- Department of Traditional Chinese Medicine, Zhujiang Hospital of Southern Medical University, Guangzhou, China
| | - Jingru Cheng
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Fei Li
- Department of Traditional Chinese Medicine, The Affiliated Ganzhou Hospital of Nanchang University, Ganzhou, China
| | - Hanqi Lu
- Department of Traditional Chinese Medicine, Zhujiang Hospital of Southern Medical University, Guangzhou, China.,Syndrome Laboratory of Integrated Chinese and Western Medicine, School of Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Qiuxing He
- Syndrome Laboratory of Integrated Chinese and Western Medicine, School of Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Yanting You
- Syndrome Laboratory of Integrated Chinese and Western Medicine, School of Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Xinghong Zhou
- Syndrome Laboratory of Integrated Chinese and Western Medicine, School of Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Hiu Yee Kwan
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Xiaoshan Zhao
- Syndrome Laboratory of Integrated Chinese and Western Medicine, School of Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Lin Zhou
- Endocrinology Department, Nanfang Hospital, Southern Medical University, Guangzhou, China
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14
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Phloroglucinol Derivatives from Dryopteris crassirhizoma as Potent Xanthine Oxidase Inhibitors. Molecules 2020; 26:molecules26010122. [PMID: 33383880 PMCID: PMC7796287 DOI: 10.3390/molecules26010122] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/17/2020] [Accepted: 12/21/2020] [Indexed: 02/06/2023] Open
Abstract
Dryopteris crassirhizoma rhizomes are used as a traditional medicine in Asia. The EtOAc extract of these roots has shown potent xanthine oxidase (XO) inhibitory activity. However, the main phloroglucinols in D. crassirhizoma rhizomes have not been analyzed. Thus, we investigated the major constituents responsible for this effect. Bioassay-guided purification isolated four compounds: flavaspidic acid AP (1), flavaspidic acid AB (2), flavaspidic acid PB (3), and flavaspidic acid BB (4). Among these, 1 showed the most potent inhibitory activity with a half-maximal inhibitory concentration (IC50) value of 6.3 µM, similar to that of allopurinol (IC50 = 5.7 µM) and better than that of oxypurinol (IC50 = 43.1 µM), which are XO inhibitors. A comparative activity screen indicated that the acetyl group at C3 and C3' is crucial for XO inhibition. For example, 1 showed nearly 4-fold higher efficacy than 4 (IC50 = 20.9 µM). Representative inhibitors (1-4) in the rhizomes of D. crassirhizoma showed reversible and noncompetitive inhibition toward XO. Furthermore, the potent inhibitors were shown to be present in high quantities in the rhizomes by a UPLC-QTOF-MS analysis. Therefore, the rhizomes of D. crassirhizoma could be used to develop nutraceuticals and medicines for the treatment of gout.
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Liu L, Zhang L, Ren L, Xie Y. Advances in structures required of polyphenols for xanthine oxidase inhibition. FOOD FRONTIERS 2020. [DOI: 10.1002/fft2.27] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Affiliation(s)
- Liangliang Liu
- Institute of Bast Fiber Crops Chinese Academy of Agricultural Sciences Changsha 410205 China
| | - Li Zhang
- College of Chemistry and Materials Engineering Huaihua University Huaihua 418000 China
| | - Licheng Ren
- Institute of Bast Fiber Crops Chinese Academy of Agricultural Sciences Changsha 410205 China
- Department of Plastic and Cosmetic Surgery Shenzhen University General Hospital Shenzhen 518055 China
| | - Yixi Xie
- Institute of Bast Fiber Crops Chinese Academy of Agricultural Sciences Changsha 410205 China
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province Xiangtan University Xiangtan 411105 China
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Mehmood A, Rehman AU, Ishaq M, Zhao L, Li J, Usman M, Zhao L, Rehman A, Zad OD, Wang C. In vitro and in silico Xanthine Oxidase Inhibitory Activity of Selected Phytochemicals Widely Present in Various Edible Plants. Comb Chem High Throughput Screen 2020; 23:917-930. [PMID: 32342806 DOI: 10.2174/1386207323666200428075224] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 01/13/2020] [Accepted: 01/14/2020] [Indexed: 11/22/2022]
Abstract
AIM AND OBJECTIVE The present study was designed to evaluate the xanthine oxidase (XO) inhibitory and antioxidant activities of 30 bioactive compounds present in edible food plants for the possible treatment of hyperuricemia. MATERIALS AND METHODS The XO inhibitory, SO and DPPH radical scavenging activities of selected dietary polyphenols were determined by using colorimetric assays. The molecular docking analysis was performed to evaluate the insight into inhibitory mode of action of bioactive compounds against XO. RESULTS The results show that apigenin, galangin, kaempferol, quercetin, genistein and resveratrol potently inhibit XO enzyme among all tested compounds. Flavonoids exhibit higher, anthocyanins and hydroxycinnamic acids moderate, maslinic acid, ellagic acid, salicylic acid, [6]-gingerol and flavan-3-ols showed weak XO inhibitory activity. The results of molecular docking study revealed that these bioactive compounds bind with the active site of XO and occupy the active site which further prevents the entrance of substrate and results in the inhibition of XO. CONCLUSION Inhibition of XO gives a robust biochemical basis for management of hyperuricemia, gout and other associated diseases via controlling uric acid synthesis.
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Affiliation(s)
- Arshad Mehmood
- Beijing Advance Innovation Center for Food Nutrition and Human Health, School of Food and Chemical Technology, China-Canada Joint Laboratory for Food Nutrition and Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Ashfaq Ur Rehman
- Department of Bioinformatics and Biostatistics, National Experimental Teaching Center for Life Science and Biotechnology, College of Life Science and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Muhammad Ishaq
- Beijing Advance Innovation Center for Food Nutrition and Human Health, School of Food and Chemical Technology, China-Canada Joint Laboratory for Food Nutrition and Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Liang Zhao
- Beijing Advance Innovation Center for Food Nutrition and Human Health, School of Food and Chemical Technology, China-Canada Joint Laboratory for Food Nutrition and Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Jiayi Li
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Muhammad Usman
- Beijing Advance Innovation Center for Food Nutrition and Human Health, School of Food and Chemical Technology, China-Canada Joint Laboratory for Food Nutrition and Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Lei Zhao
- Beijing Advance Innovation Center for Food Nutrition and Human Health, School of Food and Chemical Technology, China-Canada Joint Laboratory for Food Nutrition and Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Abdur Rehman
- State Key Laboratory of Food Science, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Oumeddour D Zad
- Beijing Advance Innovation Center for Food Nutrition and Human Health, School of Food and Chemical Technology, China-Canada Joint Laboratory for Food Nutrition and Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Chengtao Wang
- Beijing Advance Innovation Center for Food Nutrition and Human Health, School of Food and Chemical Technology, China-Canada Joint Laboratory for Food Nutrition and Health, Beijing Technology and Business University (BTBU), Beijing 100048, China
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Xu WH, Wang HT, Sun Y, Xue ZC, Liang ML, Su WK. Antihyperuricemic and nephroprotective effects of extracts from Orthosiphon stamineus in hyperuricemic mice. ACTA ACUST UNITED AC 2020; 72:551-560. [PMID: 31910301 DOI: 10.1111/jphp.13222] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 11/24/2019] [Indexed: 12/17/2022]
Abstract
OBJECTIVES To investigate the antihyperuricemia and nephroprotective effects of Orthosiphon stamineus extracts on hyperuricemia (HUA) mice and explore the potential mechanisms. METHODS Orthosiphon stamineus extracts were extracted using 50% ethanol and enriched using ethyl acetate, and characterised utilising UPLC/ESI-MS. A potassium oxonate (PO) induced hyperuricemic mouse model was used to evaluate antihyperuricemia and nephroprotective effects of O. stamineus ethyl acetate extracts (OSE). KEY FINDINGS Eight constituents from OSE were identified and OSE treatment ameliorated HUA by regulating key indicators of kidney dysfunction and xanthine oxidase, adenosine deaminase activity and urate transporters in hyperuricemic mice. Moreover, in renal histopathology analysis, OSE significantly alleviated kidney injury. CONCLUSIONS These findings demonstrate that OSE has antihyperuricemic and nephroprotective effects on PO-induced HUA mice and those results indicate that OSE could be a safe and effective agent or functional ingredient for treating HUA.
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Affiliation(s)
- Wen-Hao Xu
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, China
| | - Han-Tao Wang
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, China
| | - Ying Sun
- Zhejiang Xianju Pharmaceutical Technology Co., Ltd, Hangzhou, China
| | - Zhen-Cheng Xue
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, China
| | - Ming-Li Liang
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, China
| | - Wei-Ke Su
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, China.,Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, China
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Wen S, Zhang Z, Chen X, Liu J, Yu H, Han L, Jin L, Zhang Y, Wang T. An improved UPLC method for determining uric acid in rat serum and comparison study with commercial colorimetric kits. ACTA CHROMATOGR 2019. [DOI: 10.1556/1326.2018.00449] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Shaoshi Wen
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 312 Anshanxi Road, Nankai District, Tianjin, 300193, China
| | - Zixin Zhang
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 312 Anshan Road, Nankai District, Tianjin, 300193, China
| | - Xiaopeng Chen
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 312 Anshan Road, Nankai District, Tianjin, 300193, China
| | - Jinchang Liu
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 312 Anshan Road, Nankai District, Tianjin, 300193, China
| | - Haiyang Yu
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 312 Anshan Road, Nankai District, Tianjin, 300193, China
| | - Lifeng Han
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 312 Anshan Road, Nankai District, Tianjin, 300193, China
| | - Lijun Jin
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 312 Anshanxi Road, Nankai District, Tianjin, 300193, China
| | - Yi Zhang
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 312 Anshan Road, Nankai District, Tianjin, 300193, China
| | - Tao Wang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 312 Anshanxi Road, Nankai District, Tianjin, 300193, China
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An Improved Method for the Synthesis of Butein Using SOCl 2/EtOH as Catalyst and Deciphering Its Inhibition Mechanism on Xanthine Oxidase. Molecules 2019; 24:molecules24101948. [PMID: 31117192 PMCID: PMC6572126 DOI: 10.3390/molecules24101948] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 05/18/2019] [Accepted: 05/19/2019] [Indexed: 12/24/2022] Open
Abstract
Butein (3,4,2',4'-tetrahydroxychalcone) belongs to the chalcone family of flavonoids and possesses various biological activities. In this study, butein was synthesized through aldol condensation catalyzed by thionyl chloride (SOCl2)/ethyl alcohol (EtOH) for the first time. The optimal reaction conditions including the molar ratio of reactants, the dosage of catalyst, and the reaction time on the yield of product were investigated, and the straightforward strategy assembles the yield of butein up to 88%. Butein has been found to inhibit xanthine oxidase (XO) activity. Herein, the inhibitory mechanism of butein against XO was discussed in aspects of inhibition kinetic, fluorescence titration, synchronous fluorescence spectroscopy, and molecular docking. The inhibition kinetic analysis showed that butein possessed a stronger inhibition on XO in an irreversible competitive manner with IC50 value of 2.93 × 10-6 mol L-1. The results of fluorescence titrations and synchronous fluorescence spectroscopy indicated that butein was able to interact with XO at one binding site, and the fluorophores of XO were placed in a more hydrophobic environment with the addition of butein. Subsequently, the result of molecular docking between butein and XO protein revealed that butein formed hydrogen bonding with the amino acid residues located in the hydrophobic cavity of XO. All the results suggested that the inhibitory mechanism of butein on XO may be the insertion of butein into the active site occupying the catalytic center of XO to avoid the entrance of xanthine and inducing conformational changes in XO.
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Liu Y, Hou Y, Si Y, Wang W, Zhang S, Sun S, Liu X, Wang R, Wang W. Isolation, characterization, and xanthine oxidase inhibitory activities of flavonoids from the leaves of Perilla frutescens. Nat Prod Res 2019; 34:2566-2572. [PMID: 30600717 DOI: 10.1080/14786419.2018.1544981] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Phytochemical investigation of the water extract from the leaves of Perilla frutescens (Lamiaceae) led to the isolation of a new flavanone, a new chalcone, and a new aurone, namely, (2S)-5,7-dimethoxy-8,4'-dihydroxyflavanone (1), 2',4'-dimethoxy-4,5',6'-trihydroxychalcone (2), and (Z)-4,6-dimethoxy-7,4'-dihydroxyaurone (3), respectively. The structures were unambiguously elucidated on the basis of spectroscopic data. And the absolute configuration of 1 was determined by analysis of electronic circular dichroism spectrum. The isolated compounds were evaluated for their inhibitory effects on xanthine oxidase in vitro. Among them, 2 showed more potent activity than the positive control allopurinol, a well-known XO inhibitor clinically used for treatment of gout. Lineweaver-Burk transformation of the inhibition kinetics data demonstrated that it was a mixed-type inhibitor.[Formula: see text].
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Affiliation(s)
- Yang Liu
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China
| | - Yuxue Hou
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China
| | - Yueyue Si
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China
| | - Wei Wang
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China
| | - Shuang Zhang
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China
| | - Shiwei Sun
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China
| | - Xiaohong Liu
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China
| | - Rongrong Wang
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China
| | - Wei Wang
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China
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Optimization of the Extraction Conditions and Biological Evaluation of Dendropanax morbifera H. Lev as an Anti-Hyperuricemic Source. Molecules 2018; 23:molecules23123313. [PMID: 30558104 PMCID: PMC6321341 DOI: 10.3390/molecules23123313] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 12/03/2018] [Accepted: 12/13/2018] [Indexed: 01/31/2023] Open
Abstract
Dendropanax morbifera H. Levis a medicinal plant native to South Korea, East Asia, and South America. Among some 75 species, one species grows in Korea. In previous studies, D. morbifera extracts with anti-oxidant, anti-inflammatory, anti-complementary and anti-cancer activities were reported. The present study aims to investigate optimization of extraction and evaluation of anti-hyperuricemic effects of D. morbifera leaf and the phytochemicals contained therein. Ethanol and hexane extract were found to display the best xanthine oxidase inhibition among six types of solvent and water extract. The antioxidant effect of the ethanol extract was superior to that of the hexane extract. The DPPH radical scavenging effect of the ethanol and hexane extracts were 81.52 ± 1.57% and 2.69 ± 0.16. The reducing power of the ethanol and hexane extracts were 9.71 ± 0.15 and 0.89 ± 0.01 mg/g equivalent of gallic acid. Total phenols of the ethanol and hexane extracts were 6.53 ± 0.16 and 0.63 ± 0.001 mg/g equivalent of gallic acid. In addition, we compared the two marker compounds from D. morbifera, chlorogenic acid and rutin, which were determined in the ethanol extract at 0.80 ± 0.03% and 0.52 ± 0.01%, respectively. We found that the ethanol extracts showed better xanthine oxidase inhibition than hexane extracts. Especially, ethanol extracts showed higher antioxidant activity than hexane extracts. Based on these results, we selected the ethanol extract as an effective xanthine oxidase inhibitor and confirmed whether ethanol extracts showed xanthine oxidase inhibition in animal experiments. The in vivo mouse study demonstrated that ethanol extract of D. morbifera leaf at the dose of 300 mg/kg could inhibit blood/hepatic xanthine oxidase activity and this result shows that the xanthine oxidase inhibitory activity in vitro is reproduced in vivo. The present study showed that ethanol extract was optimal xanthine oxidase inhibitor which can be applied to prevent diseases related to hyperuricemia.
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Effects of Toona sinensis Leaf Extract and Its Chemical Constituents on Xanthine Oxidase Activity and Serum Uric Acid Levels in Potassium Oxonate-Induced Hyperuricemic Rats. Molecules 2018; 23:molecules23123254. [PMID: 30544886 PMCID: PMC6321014 DOI: 10.3390/molecules23123254] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 12/06/2018] [Accepted: 12/08/2018] [Indexed: 01/10/2023] Open
Abstract
Toona sinensis leaf is used as a seasonal vegetable in Korea. A 70% ethanol extract of these leaves exhibited potent xanthine oxidase (XO) inhibition, with a 50% inhibitory concentration (IC50) of 78.4 µM. To investigate the compounds responsible for this effect, bioassay-guided purification led to the isolation of five constituents, identified as quercetin-3-O-rutinoside, quercetin-3-O-β-d-glucopyranoside, 1,2,3,4,6-penta-O-galloyl-β-d-glucopyranose (compound 3), quercetin-3-O-α-l-rhamnopyranoside, and kaempferol-3-O-α-l-rhamnopyranoside. Compound 3 showed the most potent inhibition of XO, with an IC50 of 2.8 µM. This was similar to that of allopurinol (IC50 = 2.3 µM), which is used clinically to treat hyperuricemia. Kinetic analyses found that compound 3 was a reversible noncompetitive XO inhibitor. In vivo, the T. sinensis leaf extract (300 mg/kg), or compound 3 (40 mg/kg), significantly decreased serum uric acid levels in rats with potassium oxonate-induced hyperuricemia. Furthermore, ultraperformance liquid chromatography-quadrupole time-of-flight mass spectrometry analysis identified a high level of compound 3 in the leaf extract. These findings suggest that T. sinensis leaves could be developed to produce nutraceutical preparations.
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Ethanol Extract of Cudrania tricuspidata Leaf Ameliorates Hyperuricemia in Mice via Inhibition of Hepatic and Serum Xanthine Oxidase Activity. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:8037925. [PMID: 30622611 PMCID: PMC6304516 DOI: 10.1155/2018/8037925] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 11/08/2018] [Indexed: 01/13/2023]
Abstract
Cudrania tricuspidata Bureau (Moraceae) (CT) is a dietary and medicinal plant distributed widely in Northeast Asia. There have been no studies on the effect of CT and/or its active constituents on in vivo xanthine oxidase (XO) activity, hyperuricemia, and gout. The aim of this study was to investigate XO inhibitory and antihyperuricemic effects of the ethanol extract of CT leaf (CTLE) and its active constituents in vitro and in vivo. Gas chromatography-mass spectrometry (GC-MS) and high-performance liquid chromatography (HPLC) analyses were used to determine a chemical profile of CTLE. XO inhibitory and antihyperuricemic effects of CTLE given orally (30 and 100 mg/kg per day for 1 week) were examined in potassium oxonate-induced hyperuricemic ICR mice. CTLE exhibited XO inhibitory activity in vitro with an IC50 of 368.2 μg/mL, significantly reduced serum uric acid levels by approximately 2-fold (7.9 nM in normal mice; 3.8 nM in 30 mg/kg CTLE; 3.9 nM in 100 mg/kg CTLE), and significantly alleviated hyperuricemia by reducing hepatic (by 39.1 and 41.8% in 30 and 100 mg/kg, respectively) and serum XO activity (by 30.7 and 50.1% in 30 and 100 mg/kg, respectively) in hyperuricemic mice. Moreover, several XO inhibitory and/or antihyperuricemic phytochemicals, such as stigmasterol, β-sitosterol, vitamin E, rutin, and kaempferol, were identified from CTLE. Compared with rutin, kaempferol showed markedly higher XO inhibitory activity in vitro. Our present results demonstrate that CTLE may offer a promising alternative to allopurinol for the treatment of hyperuricemia and gout.
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Screening of xanthine oxidase inhibitor from selected edible plants and hypouricemic effect of Rhizoma Alpiniae Officinarum extract on hyperuricemic rats. J Funct Foods 2018. [DOI: 10.1016/j.jff.2018.09.024] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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Liu XX, Sun SW, Yuan WJ, Gao H, Si YY, Liu K, Zhang S, Liu Y, Wang W. Isolation of Tricin as a Xanthine Oxidase Inhibitor from Sweet White Clover ( Melilotus albus) and Its Distribution in Selected Gramineae Species. Molecules 2018; 23:molecules23102719. [PMID: 30360380 PMCID: PMC6222886 DOI: 10.3390/molecules23102719] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 10/16/2018] [Accepted: 10/18/2018] [Indexed: 12/11/2022] Open
Abstract
Xanthine oxidase, an enzyme present in significant levels in the intestine and liver, metabolizes hypoxanthine to xanthine and xanthine to uric acid in the purine catabolic pathway. An inhibitory compound acting against xanthine oxidase was isolated from sweet white clover (Melilotus albus) by bioassay and high-performance liquid chromatography guided separation. It was identified as tricin by spectroscopic analysis. Tricin possessed a potent xanthine oxidase inhibitory activity with an IC50 value of 4.13 μM. Further inhibition kinetics data indicated it to be a mixed-type inhibitor and Ki and KI values were determined to be 0.47 μM and 4.41 μM. To find a rich source of tricin, the distribution of tricin in seven different tissues from four Gramineae species was investigated by high-performance liquid chromatography analysis. The highest amount (1925.05 mg/kg dry materials) was found in the straw of wheat, which is considered as a potentially valuable source of natural tricin.
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Affiliation(s)
- Xiao-Xiao Liu
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Shi-Wei Sun
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Wen-Jing Yuan
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Hua Gao
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Yue-Yue Si
- Department of Drug Metabolism and Analysis, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Kun Liu
- Department of Drug Metabolism and Analysis, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Shuang Zhang
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Yang Liu
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Wei Wang
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
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Assefa AD, Jeong YJ, Kim DJ, Jeon YA, Ok HC, Baek HJ, Sung JS. Characterization, identification, and quantification of phenolic compounds using UPLC-Q-TOF-MS and evaluation of antioxidant activity of 73 Perilla frutescens accessions. Food Res Int 2018; 111:153-167. [DOI: 10.1016/j.foodres.2018.05.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 05/05/2018] [Accepted: 05/08/2018] [Indexed: 01/08/2023]
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Identification of the free phenolic profile of Adlay bran by UPLC-QTOF-MS/MS and inhibitory mechanisms of phenolic acids against xanthine oxidase. Food Chem 2018; 253:108-118. [DOI: 10.1016/j.foodchem.2018.01.139] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 12/23/2017] [Accepted: 01/22/2018] [Indexed: 12/11/2022]
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Chen TB, Zuo YH, Dong GT, Liu L, Zhou H. An integrated strategy for rapid discovery and identification of quality markers in Guanxin Kangtai preparation using UHPLC-TOF/MS and multivariate statistical analysis. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2018; 44:239-246. [PMID: 29551647 DOI: 10.1016/j.phymed.2018.03.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 02/02/2018] [Accepted: 03/05/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Guanxin Kangtai preparation (GXKT), consisting of Panax ginseng, Panax notoginseng and Ilex pubescens, is a new proprietary Chinese medicines under development for treating coronary heart disease. Like other Chinese medicines, the components of GXKT were complex and the bioactive compounds remained unclear. PURPOSE To discover bioactive compounds as quality markers (Q-markers) for better quality control of GXKT. STUDY DESIGN Chinese medicines was separated into fractions. The correlation between chemical information and bioactivity of these fractions were analyzed with multivariate statistical methods to discover bioactive compounds responsible for the actions of Chinese medicine. METHOD GXKT was separated into fractions by using high-performance liquid chromatography (HPLC). Ultra HPLC coupled with time-of-flight mass spectrometer (UHPLC-TOF/MS) was applied to detect compound information from these fractions to form a chemical database. The bioactivity of these fractions in protecting cardiomyocytes from ischemia/reperfusion injury was examined in H9c2 cells that were exposed to hypoxia followed by reoxygenation (H/R). Then, partial least square model and orthogonal projections to latent structures discriminant analysis were employed to discover bioactive compounds from the chemical database that were positively correlated with the bioactivity of GXKT fractions. Finally, the bioactivity of these compounds was confirmed by bioassay in H9c2 cells. RESULTS The chemical information of 120 fractions separated from GXKT was detected and extracted by UHPLC-TOF/MS, and a chemical database including 61 high abundance compounds were formed from all fractions. These fractions produced different extent of protective effect to H9c2 cell underwent H/R treatment with cell viability ranging from 33.43% to 74.91%, demonstrating the separation of bioactive compounds among different fractions. The multivariate analysis discovered 16 compounds from GXKT positively correlated with the bioactivity of GXKT. Of these compounds, 6 compounds, i.e.: ginsenoside Rg1, Rb1, Rh1, Rc, ilexsaponin A1, and chikusetsusaponin IVa were chemical identified and also confirmed for their responsibility to the action of GXKT by bioassay. CONCLUSION Ginsenoside Rg1, Rb1, Rh1, Rc, ilexsaponin A1, and chikusetsusaponin IVa were bioactive compounds and qualified as Q-markers for quality control of GXKT. This research provided a useful reference for the quality research of Chinese medicines.
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Affiliation(s)
- Ting-Bo Chen
- Faculty of Chinese Medicine, Macau University of Science and Technology and State Key Laboratory of Quality Research in Chinese Medicine (Macau University of Science and Technology), Taipa, Macau PR China
| | - Yi-Han Zuo
- Faculty of Chinese Medicine, Macau University of Science and Technology and State Key Laboratory of Quality Research in Chinese Medicine (Macau University of Science and Technology), Taipa, Macau PR China
| | - Geng-Ting Dong
- Faculty of Chinese Medicine, Macau University of Science and Technology and State Key Laboratory of Quality Research in Chinese Medicine (Macau University of Science and Technology), Taipa, Macau PR China
| | - Liang Liu
- Faculty of Chinese Medicine, Macau University of Science and Technology and State Key Laboratory of Quality Research in Chinese Medicine (Macau University of Science and Technology), Taipa, Macau PR China
| | - Hua Zhou
- Faculty of Chinese Medicine, Macau University of Science and Technology and State Key Laboratory of Quality Research in Chinese Medicine (Macau University of Science and Technology), Taipa, Macau PR China; International Institute of Translation Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province PR China.
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Qin Z, Wang S, Lin Y, Zhao Y, Yang S, Song J, Xie T, Tian J, Wu S, Du G. Antihyperuricemic effect of mangiferin aglycon derivative J99745 by inhibiting xanthine oxidase activity and urate transporter 1 expression in mice. Acta Pharm Sin B 2018; 8:306-315. [PMID: 29719791 PMCID: PMC5925220 DOI: 10.1016/j.apsb.2017.05.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 05/02/2017] [Accepted: 05/04/2017] [Indexed: 12/20/2022] Open
Abstract
A mangiferin aglycon derivative J99745 has been identified as a potent xanthine oxidase (XOD) inhibitor by previous in vitro study. This study aimed to evaluate the hypouricemic effects of J99745 in experimental hyperuricemia mice, and explore the underlying mechanisms. Mice were orally administered 600 mg/kg xanthine once daily for 7 days and intraperitoneally injected 250 mg/kg oxonic acid on the 7th day to induce hyperuricemia. Meanwhile, J99745 (3, 10, and 30 mg/kg), allopurinol (20 mg/kg) or benzbromarone (20 mg/kg) were orally administered to mice for 7 days. On the 7th day, uric acid and creatinine in serum and urine, blood urea nitrogen (BUN), malondialdehyde (MDA) content and XOD activities in serum and liver were determined. Morphological changes in kidney were observed using hematoxylin and eosin (H&E) staining. Hepatic XOD, renal urate transporter 1 (URAT1), glucose transporter type 9 (GLUT9), organic anion transporter 1 (OAT1) and ATP-binding cassette transporter G2 (ABCG2) were detected by Western blot and real time polymerase chain reaction (PCR). The results showed that J99745 at doses of 10 and 30 mg/kg significantly reduced serum urate, and enhanced fractional excretion of uric acid (FEUA). H&E staining confirmed that J99745 provided greater nephroprotective effects than allopurinol and benzbromarone. Moreover, serum and hepatic XOD activities and renal URAT1 expression declined in J99745-treated hyperuricemia mice. In consistence with the ability to inhibit XOD, J99745 lowered serum MDA content in hyperuricemia mice. Our results suggest that J99745 exerts urate-lowering effect by inhibiting XOD activity and URAT1 expression, thus representing a promising candidate as an anti-hyperuricemia agent.
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Abbas M, Ali A, Arshad M, Atta A, Mehmood Z, Tahir IM, Iqbal M. Mutagenicity, cytotoxic and antioxidant activities of Ricinus communis different parts. Chem Cent J 2018; 12:3. [PMID: 29350299 PMCID: PMC5775190 DOI: 10.1186/s13065-018-0370-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 01/07/2018] [Indexed: 12/30/2022] Open
Abstract
Ricinus communis (castor plant) is a potent medicinal plant, which is commonly used in the treatment of various ailments. The present study was conducted to appraise the cytotoxicity and mutagenicity of R. communis along with antioxidant and antimicrobial activities. Cytotoxicity was evaluated by hemolytic and brine shrimp assays, whereas Ames test (TA98 and TA100) was used for mutagenicity evaluation. Plant different parts were extracted in methanol by shaking, sonication and Soxhlet extraction methods. The R. communis methanolic extracts showed promising antioxidant activity evaluated as through total phenolic contents (TPC), total flavonoid content (TFC), DPPH free radical inhibition, reducing power and inhibition of linoleic acid oxidation. R. communis seeds, stem, leaves, fruit and root methanolic extracts showed mild to moderate cytotoxicity against red blood cells (RBCs) of human and bovine. Brine shrimp lethality also revealed the cytotoxic nature of extracts with LC50 in the range of 0.22-3.70 (µg/mL) (shaking), 1.59-60.92 (µg/mL) (sonication) and 0.72-33.60 (µg/mL) (Soxhlet), whereas LC90 values were in the range of 345.42-1695.81, 660.50-14,794.40 and 641.62-15,047.80 µg/mL for shaking, sonication and Soxhlet extraction methods, respectively. R. communis methanolic extracts revealed mild mutagenicity against TA98 (range 1975 ± 67 to 2628 ± 79 revertant colonies) and TA100 (range 2773 ± 92 to 3461 ± 147 revertant colonies) strains and these values were 3267 ± 278 and 4720 ± 346 revertant colonies in case of TA98 and TA100 positive controls, respectively. R. communis methanolic extracts prevented the H2O2 and UV to Plasmid pBR322 DNA oxidative damage. Results revealed that R. communis is a potential source of bioactive compounds and in future studies the bioactive compounds will be identified by advanced spectroscopic techniques.
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Affiliation(s)
- Mazhar Abbas
- Department of Basic Sciences, Section Biochemistry, College of Veterinary and Animal Sciences, Jhang Campus, Jhang, 35200, Pakistan
| | - Abid Ali
- College of Allied Health Professional, Directorate of Medical Science, Govt. College University, Faisalabad, Pakistan
| | - Muhammad Arshad
- Department of Basic Sciences, Section Biochemistry, College of Veterinary and Animal Sciences, Jhang Campus, Jhang, 35200, Pakistan
| | - Asia Atta
- Department of Biochemistry, Bahauddin Zakariya University, Multan, 60800, Pakistan
| | - Zahed Mehmood
- Department of Applied Chemistry and Biochemistry, Govt. College University, Faisalabad, Pakistan
| | - Imtiaz Mahmood Tahir
- College of Allied Health Professional, Directorate of Medical Science, Govt. College University, Faisalabad, Pakistan
| | - Munawar Iqbal
- Department of Chemistry, The University of Lahore, Lahore, Pakistan.
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Mehmood A, Zhao L, Wang C, Nadeem M, Raza A, Ali N, Shah AA. Management of hyperuricemia through dietary polyphenols as a natural medicament: A comprehensive review. Crit Rev Food Sci Nutr 2017; 59:1433-1455. [PMID: 29278921 DOI: 10.1080/10408398.2017.1412939] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Hyperuricemia, a condition due to high serum uric acid level and is notorious to health. It is considered to be a potent risk factor for gout and dramatically associated in the development of many chronic diseases such as malignant tumor, cardiovascular disorders and renal failure. Modern innovative medicinal and therapeutic interventions are underlying these days to combat hyperuricemia. Previously reported studies revealed the significant impact of dietary polyphenols (e.g. anthocyanins, phenolic acids, flavonoids etc.) against hyperurecemia disorder. Dietary plant polyphenols, unlike anti- hyperuricemic agents, are not reported to have any side effects in curing hyperuricemia. The current comprehensive review figure outs the use of dietary polyphenols as a natural remedy for the management of hyperuricemia. The sources, affiliated pathways, mode of actions and factors affecting their efficiency to prevent hyperuricemia are deeply discussed in this article. Additionally, limitations and suggestions regarding previously reported studies are also highlighted.
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Affiliation(s)
- Arshad Mehmood
- a Beijing Advance Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University , Beijing , China.,b Beijing Engineering and Technology Research Center of Food Additives , School of Food and Chemical Engineering, Beijing Technology and Business University , Beijing , China.,c Institute of Food Science and Nutrition, University of Sargodha , Sargodha , Pakistan
| | - Lei Zhao
- a Beijing Advance Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University , Beijing , China.,b Beijing Engineering and Technology Research Center of Food Additives , School of Food and Chemical Engineering, Beijing Technology and Business University , Beijing , China
| | - Chengtao Wang
- a Beijing Advance Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University , Beijing , China.,b Beijing Engineering and Technology Research Center of Food Additives , School of Food and Chemical Engineering, Beijing Technology and Business University , Beijing , China
| | - Muhammad Nadeem
- c Institute of Food Science and Nutrition, University of Sargodha , Sargodha , Pakistan
| | - Ali Raza
- a Beijing Advance Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University , Beijing , China.,b Beijing Engineering and Technology Research Center of Food Additives , School of Food and Chemical Engineering, Beijing Technology and Business University , Beijing , China
| | - Nawazish Ali
- a Beijing Advance Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University , Beijing , China.,b Beijing Engineering and Technology Research Center of Food Additives , School of Food and Chemical Engineering, Beijing Technology and Business University , Beijing , China
| | - Amjad Abbas Shah
- c Institute of Food Science and Nutrition, University of Sargodha , Sargodha , Pakistan
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Antioxidant and Antidiabetic Effects of Flavonoids: A Structure-Activity Relationship Based Study. BIOMED RESEARCH INTERNATIONAL 2017; 2017:8386065. [PMID: 29318154 PMCID: PMC5727842 DOI: 10.1155/2017/8386065] [Citation(s) in RCA: 139] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Revised: 09/21/2017] [Accepted: 10/12/2017] [Indexed: 11/17/2022]
Abstract
The best described pharmacological property of flavonoids is their capacity to act as potent antioxidant that has been reported to play an important role in the alleviation of diabetes mellitus. Flavonoids biochemical properties are structure dependent; however, they are yet to be thoroughly understood. Hence, the main aim of this work was to investigate the antioxidant and antidiabetic properties of some structurally related flavonoids to identify key positions responsible, their correlation, and the effect of methylation and acetylation on the same properties. Antioxidant potential was evaluated through dot blot, 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging, ABTS+ radical scavenging, ferric reducing antioxidant power (FRAP), and xanthine oxidase inhibitory (XOI) assays. Antidiabetic effect was investigated through α-glucosidase and dipeptidyl peptidase-4 (DPP-4) assays. Results showed that the total number and the configuration of hydroxyl groups played an important role in regulating antioxidant and antidiabetic properties in scavenging DPPH radical, ABTS+ radical, and FRAP assays and improved both α-glucosidase and DPP-4 activities. Presence of C-2-C-3 double bond and C-4 ketonic group are two essential structural features in the bioactivity of flavonoids especially for antidiabetic property. Methylation and acetylation of hydroxyl groups were found to diminish the in vitro antioxidant and antidiabetic properties of the flavonoids.
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Liu Y, Liu XH, Zhou S, Gao H, Li GL, Guo WJ, Fang XY, Wang W. Perillanolides A and B, new monoterpene glycosides from the leaves of Perilla frutescens. REVISTA BRASILEIRA DE FARMACOGNOSIA-BRAZILIAN JOURNAL OF PHARMACOGNOSY 2017. [DOI: 10.1016/j.bjp.2017.06.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Xanthine oxidase inhibitors from Archidendron clypearia (Jack.) I.C. Nielsen: Results from systematic screening of Vietnamese medicinal plants. ASIAN PAC J TROP MED 2017; 10:549-556. [PMID: 28756918 DOI: 10.1016/j.apjtm.2017.06.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 04/08/2017] [Accepted: 05/26/2017] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE To screen Vietnamese medicinal plants for xanthine oxidase (XO) inhibitory activity and to isolate XO inhibitor(s) from the most active plant. METHODS The plants materials were extracted by methanol. The active plant materials were fractionated using different organic solvents, including n-hexane, ethyl acetate, and n-butanol. Bioassay-guided fractionation and column chromatography were used to isolate compounds. The compounds structures were elucidated by analysis of spectroscopic data, including IR, MS, and NMR. RESULTS Three hundreds and eleven methanol extracts (CME) belonging to 301 Vietnamese herbs were screened for XO inhibitory activity. Among these plants, 57 extracts displayed XO inhibitory activity at 100 μg/mL with inhibition rates of over 50%. The extracts of Archidendron clypearia (A. clypearia), Smilax poilanei, Linociera ramiflora and Passiflora foetida exhibited the greatest potency with IC50 values below 30 μg/mL. Chemical study performed on the extract of A. clypearia resulted in the isolation of six compounds, including 1-octacosanol, docosenoic acid, daucosterol, methyl gallate, quercitrin and (-)-7-O-galloyltricetiflavan. The compound (-)-7-O-galloyltricetiflavan showed the most potent XO inhibitory activity with an IC50 value of 25.5 μmol/L. CONCLUSIONS From this investigation, four Vietnamese medicinal plants were identified to have XO inhibitory effects with IC50 values of the methanol extracts below 30 μg/mL. Compound (-)-7-O- galloyltricetiflavan was identified as an XO inhibitor from A. clypearia with IC50 value of 25.5 μmol/L.
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Yoon IS, Park DH, Kim JE, Yoo JC, Bae MS, Oh DS, Shim JH, Choi CY, An KW, Kim EI, Kim GY, Cho SS. Identification of the biologically active constituents of Camellia japonica leaf and anti-hyperuricemic effect in vitro and in vivo. Int J Mol Med 2017; 39:1613-1620. [PMID: 28487949 DOI: 10.3892/ijmm.2017.2973] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 04/26/2017] [Indexed: 11/05/2022] Open
Abstract
Camellia japonica L. is a plant of which the seeds are used as a folk medicine, and it is native to South Korea, Japan and China. In previous study, triterpenes, flavonoids, tannins and fatty acids which have antiviral, antioxidant and anti inflammatory activity were reported from C. japonica leaf and flower. In Korea, the seed from this plant is used as a traditional medicine and in folk remedies for the treatment of bleeding and inflammation. However, the major issue associated with the use of the seed as a medicinal and/or functional food ingredient is its application to the pharmaceutical and food industry. First, the productivity of seed extract is very much less than that of the leaf. Second, the beneficial usage of the seed extract as an alternative medicine and functional source is not yet clear. Thus, in this study, we focused on another part of the plant, the leaf, and found that the extract of Camellia japonica leaf has a high concentration of vitamin E, rutin and other biologically active compounds related to hyperuricemia. We aimed to investigate the biological activities, namely the antioxidant activities, xanthine oxidase (XO) inhibitory activity and anti‑hyperuricemic effects of extract from C. japonica leaf and the phytochemicals contained therein. Ethanol extracts of C. japonica leaf (ECJL) were prepared, and the extract was used with respect to antioxidant activities, total phenolic contents and XO inhibitory activity. The in vivo XO inhibitory activity and anti‑hyperuricemic effects of the extract were evaluated in mice with potassium oxonate‑induced hyperuricemia. To clarify the marker compounds that are responsible for the anti‑hyperuricemic effects, several key constituents were identified using gas chromatography‑mass spectrometry (GC‑MS) and and liquid chromatography-mass spectrometry (LC-MS). ECJL was found to have strong antioxidant activities, and in vitro XO inhibitory activity. The results of the in vivo experiments using mice demonstrated that ECJL at the doses of 100 and 300 mg/kg inhibited hepatic XO activity and significantly attenuated hyperuricemia. To the best of our knowledge, the present study is the first report on the XO inhibitory and anti-hyperuricemic effects of ECJL, which can be therapeutically applied in the treatment of hyperuricemia and gout.
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Affiliation(s)
- In-Soo Yoon
- College of Pharmacy, Pusan National University, Geumjeong, Busan 46241, Republic of Korea
| | - Dae-Hun Park
- Department of Oriental Medicine Materials, Dongshin University, Naju, Jeonnam 58245, Republic of Korea
| | - Jung-Eun Kim
- Department of Pharmacy, College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Muan, Jeonnam 58554, Republic of Korea
| | - Jin-Cheol Yoo
- Department of Pharmacy, College of Pharmacy, Chosun University, Gwangju 61452, Republic of Korea
| | - Min-Suk Bae
- Department of Environmental Engineering, Mokpo National University, Muan, Jeonnam 58554, Republic of Korea
| | - Deuk-Sil Oh
- Jeollanamdo Wando Arboretum, Wando, Jeonnam 59105, Republic of Korea
| | - Jung-Hyun Shim
- Department of Pharmacy, College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Muan, Jeonnam 58554, Republic of Korea
| | - Chul-Yung Choi
- Jeonnam Bioindustry Foundation, Institute of Natural Resources Research, Jangheung, Jeonnam 59338, Republic of Korea
| | - Ki-Wan An
- Division of Forest Resources, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Eun-Il Kim
- Department of Landscape Architecture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Gye-Yeop Kim
- Department of Physical Therapy, College of Health and Welfare, Dongshin University, Naju, Jeonnam 58245, Republic of Korea
| | - Seung-Sik Cho
- Department of Pharmacy, College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Muan, Jeonnam 58554, Republic of Korea
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Tohtahon Z, Zhang L, Han J, Xie X, Tu Z, Yuan T. Extraction optimization, structural characterization and bioactivity evaluation of triterpenoids from hawthorn (Crataegus cuneata
) fruits. J Food Biochem 2017. [DOI: 10.1111/jfbc.12377] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Zeynep Tohtahon
- The Key Laboratory of Plant Resources and Chemistry of Arid Zone; Chinese Academy of Sciences; State Key Laboratory of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences; Urumqi 830011 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Lu Zhang
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, and College of Life Science, Jiangxi Normal University; Nanchang 330022 China
| | - Jianxin Han
- The Key Laboratory of Plant Resources and Chemistry of Arid Zone; Chinese Academy of Sciences; State Key Laboratory of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences; Urumqi 830011 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Xing Xie
- State Key Laboratory of Food Science and Technology; College of Food Science, Nanchang University; Nanchang 330047 China
| | - Zongcai Tu
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, and College of Life Science, Jiangxi Normal University; Nanchang 330022 China
- State Key Laboratory of Food Science and Technology; College of Food Science, Nanchang University; Nanchang 330047 China
| | - Tao Yuan
- The Key Laboratory of Plant Resources and Chemistry of Arid Zone; Chinese Academy of Sciences; State Key Laboratory of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences; Urumqi 830011 China
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In Vitro and In Vivo Studies on Quercus acuta Thunb. (Fagaceae) Extract: Active Constituents, Serum Uric Acid Suppression, and Xanthine Oxidase Inhibitory Activity. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:4097195. [PMID: 28421120 PMCID: PMC5381200 DOI: 10.1155/2017/4097195] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 11/29/2016] [Accepted: 12/01/2016] [Indexed: 11/17/2022]
Abstract
Quercus acuta Thunb. (Fagaceae) (QA) is cultivated as a dietary and ornamental plant in China, Japan, South Korea, and Taiwan. It has been widely used as the main ingredient of acorn tofu, a traditional food in China and South Korea. The aim of this study was to determine in vitro and in vivo xanthine oxidase (XO) inhibitory and antihyperuricemic activities of an ethyl acetate extract of QA leaf (QALE) and identify its active phytochemicals using gas chromatography-mass spectrometry (GC-MS) and liquid chromatography (LC) systems. The QALE was found to possess potent in vitro antioxidant and XO inhibitory activities. In vivo study using hyperuricemic mice induced with potassium oxonate demonstrated that the QALE could inhibit hepatic XO activity at a relatively low oral dose (50 mg/kg) and significantly alleviate hyperuricemia to a similar extent as allopurinol. Several active compounds including vitamin E known to possess XO inhibitory activity were identified from the QALE. To the best of our knowledge, this is the first study that reports the active constituents and antihyperuricemic effect of QA, suggesting that it is feasible to use QALE as a food therapy or alternative medicine for alleviating hyperuricemia and gout.
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Wang Z, Kwon SH, Hwang SH, Kang YH, Lee JY, Lim SS. Competitive binding experiments can reduce the false positive results of affinity-based ultrafiltration-HPLC: A case study for identification of potent xanthine oxidase inhibitors from Perilla frutescens extract. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1048:30-37. [DOI: 10.1016/j.jchromb.2017.02.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 02/01/2017] [Accepted: 02/02/2017] [Indexed: 11/30/2022]
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Changes in the Total Polyphenolic Content and Antioxidant Capacities of Perilla (Perilla frutescensL.) Plant Extracts during the Growth Cycle. J FOOD QUALITY 2017. [DOI: 10.1155/2017/7214747] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Changes in the total polyphenolics and antioxidative capacity of the perilla (Perilla frutescensL.) plant, during the growth cycle, have been analyzed in this study. These parameters were evaluated at five morphological stages. The extracts characterized by the highest total phenolic compound content were obtained at the full flowering stage. The phenolic compound profile was characterized by the presence of three major compounds, with rosmarinic acid being the most abundant. Moreover, their contents were significantly different according to the growth stage. High Trolox equivalent antioxidant capacity values were found for the last two growth stages. The lowest ferric-reducing antioxidant power value was observed for the medium vegetative stage. The highest antiradical activity against DPPH•was observed for extracts obtained from the early vegetative stage. The antioxidant activity changes during the growth cycle, and this change may be useful to determine the optimal harvest time.
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Yoon IS, Park DH, Ki SH, Cho SS. Effects of extracts from Corylopsis coreana Uyeki (Hamamelidaceae) flos on xanthine oxidase activity and hyperuricemia. J Pharm Pharmacol 2016; 68:1597-1603. [DOI: 10.1111/jphp.12626] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Accepted: 07/26/2016] [Indexed: 11/30/2022]
Abstract
Abstract
Objectives
This study aims to investigate xanthine oxidase (XO) inhibitory activity and antihyperuricemic effects of Corylopsis coreana Uyeki flos extracts and the phytochemicals contained therein.
Methods
Ethanolic extracts of the plant were prepared, and the extraction process was optimized with respect to flavonoid content and XO inhibitory activity. The optimized ethanolic extract was tested for its XO inhibitory activity and antihyperuricemic effects in potassium oxonate-induced hyperuricemic mice.
Key findings
The 80% ethanolic extract showed the highest total flavonoid content and in-vitro XO inhibitory activity. In-vivo studies demonstrated that the optimized 80% ethanolic extract could inhibit hepatic XO activity and significantly alleviate hyperuricemia at a relatively low oral dose (50 mg/kg) in mice. Additionally, an in-vitro enzyme inhibition study showed that phytochemicals such as bergenin, isosalipurposide, quercetin and quercitrin may be the key constituents responsible for the observed antihyperuricemic effects of the extract.
Conclusions
This study is the first report on the XO inhibitory and antihyperuricemic effects of C. coreana Uyeki flos extract, which can be therapeutically applied in treating hyperuricemia and gout.
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Affiliation(s)
- In-Soo Yoon
- Department of Pharmacy, College of Pharmacy, Mokpo National University, Muan, Jeonnam, Korea
| | - Dae-Hun Park
- Department of Oriental Medicine Materials, Dongshin University, Naju, Jeonnam, Korea
| | - Sung-Hwan Ki
- Department of Pharmacy, Chosun University, Gwangju, Korea
| | - Seung-Sik Cho
- Department of Pharmacy, College of Pharmacy, Mokpo National University, Muan, Jeonnam, Korea
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Kaufmann CM, Grassmann J, Letzel T. HPLC method development for the online-coupling of chromatographic Perilla frutescens extract separation with xanthine oxidase enzymatic assay. J Pharm Biomed Anal 2016; 124:347-357. [DOI: 10.1016/j.jpba.2016.03.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 03/01/2016] [Accepted: 03/03/2016] [Indexed: 12/12/2022]
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Liu K, Wang W, Guo BH, Gao H, Liu Y, Liu XH, Yao HL, Cheng K. Chemical Evidence for Potent Xanthine Oxidase Inhibitory Activity of Ethyl Acetate Extract of Citrus aurantium L. Dried Immature Fruits. Molecules 2016; 21:302. [PMID: 26950105 PMCID: PMC6274447 DOI: 10.3390/molecules21030302] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 02/28/2016] [Accepted: 02/29/2016] [Indexed: 11/26/2022] Open
Abstract
Xanthine oxidase is a key enzyme which can catalyze hypoxanthine and xanthine to uric acid causing hyperuricemia in humans. Xanthine oxidase inhibitory activities of 24 organic extracts of four species belonging to Citrus genus of the family Rutaceae were assayed in vitro. Since the ethyl acetate extract of C. aurantium dried immature fruits showed the highest xanthine oxidase inhibitory activity, chemical evidence for the potent inhibitory activity was clarified on the basis of structure identification of the active constituents. Five flavanones and two polymethoxyflavones were isolated and evaluated for inhibitory activity against xanthine oxidase in vitro. Of the compounds, hesperetin showed more potent inhibitory activity with an IC50 value of 16.48 μM. For the first time, this study provides a rational basis for the use of C. aurantium dried immature fruits against hyperuricemia.
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Affiliation(s)
- Kun Liu
- School of Pharmacy, Qingdao University, Qingdao 266021, Shandong, China.
| | - Wei Wang
- School of Pharmacy, Qingdao University, Qingdao 266021, Shandong, China.
| | - Bing-Hua Guo
- School of Pharmacy, Qingdao University, Qingdao 266021, Shandong, China.
| | - Hua Gao
- School of Pharmacy, Qingdao University, Qingdao 266021, Shandong, China.
| | - Yang Liu
- School of Pharmacy, Qingdao University, Qingdao 266021, Shandong, China.
| | - Xiao-Hong Liu
- School of Pharmacy, Qingdao University, Qingdao 266021, Shandong, China.
| | - Hui-Li Yao
- School of Pharmacy, Qingdao University, Qingdao 266021, Shandong, China.
| | - Kun Cheng
- School of Pharmacy, Qingdao University, Qingdao 266021, Shandong, China.
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