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Luo F, Manse Y, Ishikawa S, Nishi S, Chen A, Wang T, Morikawa T. Aromatase inhibitors isolated from a flowering tea, snow Chrysanthemum (the capitula of Coreopsis tinctoria Nutt.). J Nat Med 2023; 77:387-396. [PMID: 36630026 DOI: 10.1007/s11418-022-01678-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 12/30/2022] [Indexed: 01/12/2023]
Abstract
Methanol extract from the capitula of Coreopsis tinctoria Nutt. (Asteraceae), which is also known as a flowering tea or blooming tea "Snow Chrysanthemum," was found to inhibit the enzymatic activity of aromatase. A total of 24 known isolates (1-24) were identified from the extract, including three chalcones (1-3), an aurone (4), five flavanones (5-9), four flavanols (10-13), a flavonol (14), and two biflavanones (15, 16). Among them, okanin (1, Ki = 1.6 μM), (2S)-naringenin (5, 0.90 μM), isookanin (6, 0.81 μM), (2S)-7,3',5'-trihydroxyflavaone (7, 0.13 μM), and (2S)-5,7,3',5'-tetrahydroxyflavanone (8, 0.32 μM) exhibited relatively potent competitive inhibition. Specifically, the isolates 7 and 8, having a common 3',5'-resorcinol moiety at the B ring in their flavanone skeleton, exhibited potent inhibitory activities compared to those of a clinically applied aminoglutethimide (0.84 μM) and naturally occurring flavone, chrysin (0.23 μM), which is a common non-steroidal aromatase inhibitor. Importantly, the active flavonoid constituents (1 and 5-8) did not inhibit the activity of 5α-reductase enzyme, which normally reacts with the same substrate "testosterone," thus, these compounds were suggested to be specific to aromatase.
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Affiliation(s)
- Fenglin Luo
- Pharmaceutical Research and Technology Institute, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka, 577-8502, Japan
| | - Yoshiaki Manse
- Pharmaceutical Research and Technology Institute, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka, 577-8502, Japan
| | - Satoshi Ishikawa
- Pharmaceutical Research and Technology Institute, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka, 577-8502, Japan
| | - Sakura Nishi
- Pharmaceutical Research and Technology Institute, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka, 577-8502, Japan
| | - Anshin Chen
- Xinjiang Shengming Heli High Tech Co. Ltd., Urumqi High-Tech Industrial Development Zone (New Urban District), No. 55 Dongrong Street, Xinjiang, 830000, China
| | - Tao Wang
- Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, West Area, Tuanbo New Town, Jinghai District, Tianjin, 301617, China
- Institute of TCM, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, West Area, Tuanbo New Town, Jinghai District, Tianjin, 301617, China
| | - Toshio Morikawa
- Pharmaceutical Research and Technology Institute, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka, 577-8502, Japan.
- Antiaging Center, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka, 577-8502, Japan.
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Han H, Ma R, Xie A, Gao J, Wang Z, Zhao Y, Pang H, Zhang W. Development of an LC/MS/MS Method for Simultaneous Detection of 11 Polyphenols in Rat Plasma and Its Pharmacokinetic Application after Oral Administration of Coreopsis tinctoria Extract. Chem Biodivers 2023; 20:e202200574. [PMID: 36382445 DOI: 10.1002/cbdv.202200574] [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: 06/27/2022] [Accepted: 11/15/2022] [Indexed: 11/17/2022]
Abstract
Eleven polyphenols, classified as flavonoid glycosides, flavonoid aglycones, and phenolic acids, are important bioactive components in the capitula of Coreopsis tinctoria (CCT). Nevertheless, their full pharmacokinetic profiles have not been demonstrated simultaneously. Therefore, a liquid chromatography - tandem mass spectrometry (LC/MS/MS) method was developed in the present work and used it to study the pharmacokinetics of these 11 compounds. We performed LC/MS/MS with a gradient mobile phase composed of water containing 0.1 % formic acid and acetonitrile containing 0.1 % formic acid on a Proshell 120 SB C18 column (2.1 mm×100 mm, 2.7 μm). We achieved a good chromatographic peak shape, resolution, and mass signal response, and multiple reaction monitoring facilitated the simultaneous detection of 11 analytes. In addition, we validated the selectivity, correlation coefficient, precision, extraction recovery, matrix effects, and stability of the LC/MS/MS method to be acceptable for 11 analytes in rat plasma. Subsequently, rats were orally administered with 50 % ethanol eluent of CCT (ECCT). Nine of 11 polyphenols were absorbed quickly (except for QCD and TCA), and their plasma levels peaked within 40 min. The exposure and Cmax values of flavonoid glycosides and phenolic acids were lower than those of flavonoid aglycones. This is the first report to demonstrate the pharmacokinetics of 11 polyphenols in ECCT, which may play an important role in future studies of the bioactive components of ECCT and their bioactive mechanisms.
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Affiliation(s)
- Haixia Han
- College of Food Science and Pharmacy, Xinjiang Agricultural University, Xinjiang, 830052, China
| | - Rui Ma
- College of Food Science and Pharmacy, Xinjiang Agricultural University, Xinjiang, 830052, China
| | - Aidi Xie
- College of Food Science and Pharmacy, Xinjiang Agricultural University, Xinjiang, 830052, China
| | - Juanjuan Gao
- College of Food Science and Pharmacy, Xinjiang Agricultural University, Xinjiang, 830052, China
| | - Zhen Wang
- College of Food Science and Pharmacy, Xinjiang Agricultural University, Xinjiang, 830052, China
| | - Yi Zhao
- College of Food Science and Pharmacy, Xinjiang Agricultural University, Xinjiang, 830052, China
| | - Huanming Pang
- College of Food Science and Pharmacy, Xinjiang Agricultural University, Xinjiang, 830052, China
| | - Wei Zhang
- School of Public Health and Emergency Management, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
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Wang Y, Cheng J, Jiang W, Chen S. Metabolomics study of flavonoids in Coreopsis tinctoria of different origins by UPLC-MS/MS. PeerJ 2022; 10:e14580. [PMID: 36570002 PMCID: PMC9774014 DOI: 10.7717/peerj.14580] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 11/28/2022] [Indexed: 12/23/2022] Open
Abstract
To analyze the flavonoids in Coreopsis tinctoria and compare the differences in flavonoids among C. tinctoria of different origins, the chemical composition of C. tinctoria capitulum was analyzed by ultra-high-performance liquid chromatography-tandem quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS), and the flavonoid metabolites were analyzed and identified based on their retention time, mass-to-charge ratio and fragment ions in the UPLC-QTOF-MS matrix. Capitulum samples of C. tinctoria were collected from three locations in the Xinjiang region at different altitudes. A total of 204 flavonoid compounds were identified, and 31 different flavonoid metabolites were then identified from flowers of C. tinctoria of different origins. Further analysis of these 31 significantly accumulated metabolites identified seven flavonoid metabolites, namely, homoplantaginin, kaempferol, quercetin, isorhamnetin, avicularin, quercetin 3-O-(6'-galloyl)-β-D-galactopyranoside and isorhamnetin 3-O-glucoside, with high accumulation only in sample collected from Tashkurgan Tajik (TX) and low expression in sample collected from Yutian County (YT) and Shaya County (SY). Moreover, 7,4'-dihydroxyflavone and 4,4'-dimethoxychalcone showed high accumulation only in SY, and afzelin was specifically highly accumulated in YT. In addition, the identified flavonoid metabolites were annotated using the Kyoto Encyclopedia of Genes and Genomes (KEGG) database, and key pathways that might regulate the biosynthesis of these flavonoid compounds were analyzed. These findings provide key information for research on flavonoids and their biosynthesis in C. tinctoria and will provide a theoretical basis for studying the herbal quality and origin of C. tinctoria.
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Liu Y, Xiong B, Qiu X, Hao H, Sha A. Study on the antithrombotic effect and physiological mechanism of okanin. Biomed Pharmacother 2022; 153:113358. [PMID: 35785699 DOI: 10.1016/j.biopha.2022.113358] [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: 04/24/2022] [Revised: 06/19/2022] [Accepted: 06/28/2022] [Indexed: 11/24/2022] Open
Abstract
The objectives of this study were to investigate the antithrombotic effect and physiological mechanism of okanin, a flavonoid monomer in Coreopsis tinctoria Nutt. The antithrombotic effects of okanin were determined by the anticoagulant activity test in vitro and in vivo, the venous thrombosis and arterial thrombosis test in rats. To study the antithrombotic physiological mechanisms of okanin, UV spectrophotometer and enzyme-linked immunosorbent assay (ELISA) were used to determine the effects of three concentrations of okanin on the contents of 6-keto-prostaglandin F1α (6-Keto-PGF1α), thromboxane B2 (TXB2), endothelin-1 (ET-1), antithrombin III (AT-Ⅲ), protein C (PC) and von willebrand factor (vWF) in the plasma of rats with arterial thrombosis; ELISA was used to detect the effects of okanin on the contents of plasminogen (PLG), tissue plasminogen activator (t-PA) and type-1 plasminogen activator inhibitor (PAI-1) in the plasma of mice and Chinese white rabbits. The results showed that okanin could prolong the coagulation time in vitro and in vivo of animals (P < 0.01 in the high dose group) and the activated partial thromboplastin time (APTT), prothrombin time (PT), and thrombin time (TT) of human venous blood (ATPP of medium dose group P < 0.01; PT, TT P < 0.05. P < 0.01 in the high dose group); inhibit the maximum platelet aggregation rate of rabbits (P < 0.05 in the low dose group; P < 0.01 in the medium and high dose groups), decrease the dry and wet weight of venous thrombosis and the wet weight of common carotid artery thrombosis in rats (low dose group, P < 0.05; medium and high dose groups, P < 0.01); increase the levels of 6-Keto-PGF1α, AT-Ⅲ, PLG and t-PA in animal plasma; decrease the levels of TXB2, ET-1, vWF and PAI-1 in animal plasma. It is concluded that okanin can significantly inhibit thrombosis, and its physiological mechanisms were related to affecting the activation of related coagulation factors in endogenous and exogenous coagulation pathways, affecting the physiological characteristics of platelets, repairing damaged vascular endothelial cells and enhancing the activity of the fibrinolytic system.
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Affiliation(s)
- Yi Liu
- School of biology and food engineering, Chongqing Three Gorges University, Chongqing 404120, China
| | - Binbing Xiong
- School of biology and food engineering, Chongqing Three Gorges University, Chongqing 404120, China
| | - Xinyu Qiu
- School of biology and food engineering, Chongqing Three Gorges University, Chongqing 404120, China
| | - Haiyan Hao
- School of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing 404120, China.
| | - Ailong Sha
- School of Teacher Education, Chongqing Three Gorges University, Chongqing 404120, China.
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Liu J, Cheng X, Zheng X, Shi Y, Li C, He Q, Li Y, Chen X. Integrated UPLC-Q-TOF-MS/MS and Network Pharmacology Approach to Investigating the Metabolic Profile of Marein of Coreopsis tinctoria Nutt. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2022; 2022:6707811. [PMID: 35656459 PMCID: PMC9152369 DOI: 10.1155/2022/6707811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 04/02/2022] [Accepted: 04/11/2022] [Indexed: 11/17/2022]
Abstract
Marein is the main active compound of Coreopsis tinctoria Nutt., and its main activities include antioxidant, hypoglycemic, and hypotensive. After oral administration of marein, the blood concentration of marein is low. The metabolites of marein have not been reported systematically. In this study, a rapid and systematic method based on ultra-high performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS/MS) was established to detect metabolites of marein in vivo (plasma and urine) after oral administration and injection. Sixty-one metabolites were identified. The metabolites are formed through a wide range of metabolic reactions, including hydroxylation, glucuronidation, methylation, hydrolysis, and desorption of hydrogen. The liver microsome incubation was further used to investigate the metabolic rate of marein. Network pharmacology was applied to study the targets and pathways of marein and its metabolites. Marein and its metabolites act on the same targets to enhance the therapeutic effect. This research illuminates the metabolites and metabolic reaction of marein and establishes a basis for the development and rational utilization of C. tinctoria. Meanwhile, the analysis of prototype and metabolites together by network pharmacology techniques could provide a methodology for the study of component activity.
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Affiliation(s)
- Jing Liu
- State Key Laboratory of Component-Based Chinese Medicine, Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xuejing Cheng
- State Key Laboratory of Component-Based Chinese Medicine, Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xin Zheng
- Beijing Analytical Center-SSL Shimadzu (China) Co., LTD, Beijing 100020, China
| | - Yumeng Shi
- State Key Laboratory of Component-Based Chinese Medicine, Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Chunxia Li
- State Key Laboratory of Component-Based Chinese Medicine, Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Qiaoyu He
- State Key Laboratory of Component-Based Chinese Medicine, Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Yue Li
- State Key Laboratory of Component-Based Chinese Medicine, Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xiaopeng Chen
- State Key Laboratory of Component-Based Chinese Medicine, Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
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Jiang H, Li Z, Jiang X, Qin Y. Physiological changes and transcript identification in Coreopsis tinctoria Nutt. in early stages of salt stress. PeerJ 2021; 9:e11888. [PMID: 34434650 PMCID: PMC8359800 DOI: 10.7717/peerj.11888] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 07/09/2021] [Indexed: 11/26/2022] Open
Abstract
Coreopsis tinctoria Nutt. (C. tinctoria) is a special tea ingredient that adapts to certain salt stresses and shares the functions of chrysanthemum. With annual expansion of the cultivation area of C. tinctoria in Xinjiang (China), soil salinity may become a constraint for chrysanthemum cultivation. To investigate the response of C. tinctoria to salt stress, physiological and transcriptional changes in C. tinctoria in the early stages of low (50 mM NaCl) and high (200 mM NaCl) salt stress were analyzed and identified. The results showed that the contents of osmotic regulators (free proline, soluble sugar, and soluble protein) and antioxidant enzymes (catalase and peroxidase) under salt stress increased to various extents compared with those of the control (CK) within 72 h, and the increase was higher under 200 mM NaCl treatments. De novo RNA-seq was used to analyze changes in the transcripts under 50 and 200 mM NaCl treatments for up to 48 h. In total, 8,584, 3,760, 7,833, 19,341, 13,233, and 9,224 differentially expressed genes (DEGs) were detected under 12 h, 24 h, and 48 h for 50 and 200 mM NaCl treatments, respectively. Weighted correlation network analysis (WGCNA) was used to analyze the correlations between all DEGs and physiological indexes. We found that the coexpression modules blue2 and Lightskyblue4 highly correlated with osmotic regulators and CAT and identified 20 and 30 hub genes, respectively. The results provide useful data for the further study of salt tolerance in C. tinctoria.
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Affiliation(s)
- Hong Jiang
- College of Forestry and Horticulture, Xinjiang Agriculture University, Urumqi, China
| | - Zhiyuan Li
- College of Forestry and Horticulture, Xinjiang Agriculture University, Urumqi, China
| | - Xiumei Jiang
- College of Forestry and Horticulture, Xinjiang Agriculture University, Urumqi, China
| | - Yong Qin
- College of Forestry and Horticulture, Xinjiang Agriculture University, Urumqi, China
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Shen J, Hu M, Tan W, Ding J, Jiang B, Xu L, Hamulati H, He C, Sun Y, Xiao P. Traditional uses, phytochemistry, pharmacology, and toxicology of Coreopsis tinctoria Nutt.: A review. JOURNAL OF ETHNOPHARMACOLOGY 2021; 269:113690. [PMID: 33309917 DOI: 10.1016/j.jep.2020.113690] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 11/25/2020] [Accepted: 12/08/2020] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Coreopsis tinctoria Nutt. (family Asteraceae) is an important traditional medicine in North America, Europe, and Asia for quite a long historical period, which has received great attention due to its health-benefiting activities, including disinfection, treatment sexual infection, diarrhoea, acute and chronic dysentery, red-eye swelling as well as pain, heat, thirst, hypertension, palpitation, gastrointestinal discomfort, and loss of appetite. AIM OF THE REVIEW The purpose of this review is to give an overview of the current phytochemistry and pharmacological activities of C. tinctoria, and reveals the correlation among its traditional uses, phytochemistry, pharmacological profile, and potential toxicity. MATERIALS AND METHODS This review is based on published studies and books from electronic sources and library, including the online ethnobotanical database, ethnobotanical monographs, Scopus, SciFinder, Baidu Scholar, CNKI, and PubMed. These reports are related to the traditional uses, phytochemistry, pharmacology, and toxicology of C. tinctoria. RESULTS Coreopsis tinctoria is traditionally used in diarrhoea, infection, and chronic metabolic diseases. From 1954 to now, more than 120 chemical constituents have been identified from C. tinctoria, such as flavonoids, polyacetylenes, polysaccharides, phenylpropanoids, and volatile oils. Flavonoids are the major bioactive components in C. tinctoria. Current research has shown that its extracts and compounds possess diverse biological and pharmacological activities such as antidiabetes, anti-cardiovascular diseases, antioxidant, anti-inflammatory, protective effects on organs, neuroprotective effects, antimicrobial, and antineoplastic. Studies in animal models, including acute toxicity, long-term toxicity, and genotoxicity have demonstrated that Snow Chrysanthemum is a non-toxic herb, especially for its water-soluble parts. CONCLUSIONS Recent findings regarding the main phytochemical and pharmacological properties of C. tinctorial have confirmed its traditional uses in anti-infection and treatment of chronic metabolic disease and, more importantly, have revealed the plant as a valuable medicinal plant resource for the treatment of a wide range of diseases. The available reports indicated that most of the bioactivities in C. tinctorial could be attributed to flavonoids. However, higher quality studies on animals and humans studies are required to explore the efficacy and mechanism of action of C. tinctoria in future.
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Affiliation(s)
- Jie Shen
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100193, China.
| | - Mengyin Hu
- Xinjiang Key Laboratory for Uighur Medicines, Xinjiang Institute of Materia Medica, Urumqi, 830004, China.
| | - Wei Tan
- Xinjiang Key Laboratory for Uighur Medicines, Xinjiang Institute of Materia Medica, Urumqi, 830004, China.
| | - Jiwei Ding
- Xinjiang Key Laboratory for Uighur Medicines, Xinjiang Institute of Materia Medica, Urumqi, 830004, China; CAMS Key Laboratory of Antiviral Drug Research, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100050, China.
| | - Baoping Jiang
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100193, China.
| | - Lei Xu
- Xinjiang Key Laboratory for Uighur Medicines, Xinjiang Institute of Materia Medica, Urumqi, 830004, China.
| | - Hasimu Hamulati
- Xinjiang Key Laboratory for Uighur Medicines, Xinjiang Institute of Materia Medica, Urumqi, 830004, China.
| | - Chunnian He
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100193, China; Xinjiang Key Laboratory for Uighur Medicines, Xinjiang Institute of Materia Medica, Urumqi, 830004, China.
| | - Yuhua Sun
- Xinjiang Key Laboratory for Uighur Medicines, Xinjiang Institute of Materia Medica, Urumqi, 830004, China.
| | - Peigen Xiao
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100193, China.
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Li SP, Zhao J, Chen LX, Hu DJ, Xu WF. Identification and determination of fructooligosaccharides in snow chrysanthemum ( Coreopsis tinctoria nutt.). WORLD JOURNAL OF TRADITIONAL CHINESE MEDICINE 2021. [DOI: 10.4103/wjtcm.wjtcm_64_20] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Protective effects of Coreopsis tinctoria buds extract against cognitive impairment and brain aging induced by d-galactose. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.104089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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Damame HH, Rooge SB, Patil RS, Arvindekar AU. In vitro model using cytokine cocktail to evaluate apoptosis in Min6 pancreatic beta cells. J Pharmacol Toxicol Methods 2020; 106:106914. [PMID: 32828949 DOI: 10.1016/j.vascn.2020.106914] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 08/08/2020] [Accepted: 08/13/2020] [Indexed: 01/23/2023]
Abstract
INTRODUCTION Development of therapy options for treatment of type 1 diabetes mellitus is hampered by non-availability of appropriate experimental models that can exactly mimic the in vivo situation. Apoptosis of beta cells by T cells and cytokine action leads to loss of beta cells. We propose a simple and elegant model using cytokine cocktail of TNF-α, IFN-γ and IL-1β, the major cytokines responsible for apoptosis in Min6 beta cell line. METHODS A cocktail of TNF-α, IFN-γ and IL-1β was used to induce apoptosis in Min6 beta cell line. Apoptosis was assessed by flow cytometry using CytoFLEX (Beckman Coulter). The destruction of beta cells is through production of nitric oxide (NO), oxidative stress and change in mitochondrial membrane permeability. NO was measured using Griess reagent. Oxidative stress was assessed using 2',7'-dichlorofluorescein diacetate, a cell-permeable fluorogenic dye and mitochondrial membrane potential was determined on the basis of retention of rhodamine 123 using flow cytometer. RESULTS AND DISCUSSION Very low concentration of the cocktail viz. TNF-α 25 ng/ml, IFN-γ 25 ng/ml and IL-1β 50 ng/ml has demonstrated effective early and late apoptosis in as short a time period as 6 h. The experimental model used demonstrated 1.5 fold higher production of NO, 1.2 fold increased oxidative stress and lower mitochondrial membrane potential as compared to the positive control used. Hence the above model can be easily used for assessment and screening of drugs that can prevent apoptosis of beta cells and stop progression of type 1 diabetes.
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Affiliation(s)
- Hemangee H Damame
- Department of Biochemistry, Shivaji University, Kolhapur 416 004, Maharashtra, India
| | - Sheetalnath B Rooge
- Department of Biochemistry, Shivaji University, Kolhapur 416 004, Maharashtra, India
| | - Rahul S Patil
- Department of Biochemistry, Shivaji University, Kolhapur 416 004, Maharashtra, India
| | - Akalpita U Arvindekar
- Department of Biochemistry, Shivaji University, Kolhapur 416 004, Maharashtra, India.
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Coreopsis tinctoria Nutt. as a source of many colours. HERBA POLONICA 2020. [DOI: 10.2478/hepo-2019-0026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Summary
Introduction:
Coreopsis tinctoria Nutt. is an annual plant with small flowers in yellow and claret. In dyeing process, a whole range of colours can be obtained using various methods.
Objective: The aim of the study was to present a wide range of colors of the little-known plant C. tinctoria. and its health promoting properties.
Methods: In our research, we selected 3 types of wool: Polish Merino, Żelaźnieńska, and Polish Lowland Sheep and compared the colours obtained on these wools using 6 dyeing methods.
Results: The results indicate that the basic colour of wool influences the intensity of colour after dyeing as well as the type of the used mordant, which determines the obtained colour. A whole range of very intense colours was obtained from very small flowers of C. tinctoria.
Conclusions: Flowers are a very good and efficient raw material that gives intense colors on wool. An additional advantage is the plant's health-promoting properties. The plant is still little explored in this respect.
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Zhang NN, Kang JS, Liu SS, Gu SM, Song ZP, Li FX, Wang LF, Yao L, Li T, Li LL, Wang Y, Li XJ, Mao XM. Flavanomarein inhibits high glucose-stimulated epithelial-mesenchymal transition in HK-2 cells via targeting spleen tyrosine kinase. Sci Rep 2020; 10:439. [PMID: 31949205 PMCID: PMC6965095 DOI: 10.1038/s41598-019-57360-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 12/27/2019] [Indexed: 01/14/2023] Open
Abstract
Flavanomarein (FM) is a major natural compound of Coreopsis tinctoria Nutt with protective effects against diabetic nephropathy (DN). In this study, we investigated the effects of FM on epithelial-mesenchymal transition (EMT) in high glucose (HG)-stimulated human proximal tubular epithelial cells (HK-2) and the underlying mechanisms, including both direct targets and downstream signal-related proteins. The influence of FM on EMT marker proteins was evaluated via western blot. Potential target proteins of FM were searched using Discovery Studio 2017 R2. Gene Ontology (GO) analysis was conducted to enrich the proteins within the protein-protein interaction (PPI) network for biological processes. Specific binding of FM to target proteins was examined via molecular dynamics and surface plasmon resonance analyses (SPR). FM promoted the proliferation of HK-2 cells stimulated with HG and inhibited EMT through the Syk/TGF-β1/Smad signaling pathway. Spleen tyrosine kinase (Syk) was predicted to be the most likely directly interacting protein with FM. Combined therapy with a Syk inhibitor and FM presents significant potential as an effective novel therapeutic strategy for DN.
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Affiliation(s)
- Nan-Nan Zhang
- State Key Laboratory of Pathogenesis, Prevention, Treatment of Central Asian High Incidence Diseases, Xinjiang Medical University, Urumqi, Xinjiang, 830011, China.,Department of Pharmacology, Pharmacy College, Xinjiang Medical University, Urumqi, Xinjiang, 830011, China
| | - Jin-Sen Kang
- Department of Pharmacology, Pharmacy College, Xinjiang Medical University, Urumqi, Xinjiang, 830011, China
| | - Shuai-Shuai Liu
- Department of Pharmacology, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
| | - Si-Meng Gu
- Department of Pharmacology, School of Basic Medical Sciences, Peking University, Beijing, 100191, China
| | - Zhi-Peng Song
- State Key Laboratory of Pathogenesis, Prevention, Treatment of Central Asian High Incidence Diseases, Xinjiang Medical University, Urumqi, Xinjiang, 830011, China.,Department of Pharmacology, Pharmacy College, Xinjiang Medical University, Urumqi, Xinjiang, 830011, China
| | - Feng-Xiang Li
- Department of Pharmacology, Pharmacy College, Xinjiang Medical University, Urumqi, Xinjiang, 830011, China
| | - Li-Feng Wang
- Department of Physiology, Preclinical School, Xinjiang Medical University, Urumqi, Xinjiang, 830011, China
| | - Lan Yao
- College of Traditional Chinese Medicine, Xinjiang Medical University, Urumqi, Xinjiang, 830011, China
| | - Tian Li
- Department of Histology and Embryology, Preclinical College, XinJiang Medical University, Urumqi, Xinjiang, 830011, China
| | - Lin-Lin Li
- Department of Pharmacology, Pharmacy College, Xinjiang Medical University, Urumqi, Xinjiang, 830011, China
| | - Ye Wang
- Department of Pharmacology, Pharmacy College, Xinjiang Medical University, Urumqi, Xinjiang, 830011, China
| | - Xue-Jun Li
- Department of Pharmacology, School of Basic Medical Sciences, Peking University, Beijing, 100191, China.
| | - Xin-Min Mao
- State Key Laboratory of Pathogenesis, Prevention, Treatment of Central Asian High Incidence Diseases, Xinjiang Medical University, Urumqi, Xinjiang, 830011, China. .,College of Traditional Chinese Medicine, Xinjiang Medical University, Urumqi, Xinjiang, 830011, China.
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Shi Y, Chen R, Xie J, Li L, Liu G, Zheng M, Zhang N. Determination and Pharmacokinetics of Okanin in Rat Plasma by UltraHigh Performance Liquid Chromatography Coupled with Triple-Quadrupole Tandem Mass Spectrometry. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2020; 2020:4247128. [PMID: 32908778 PMCID: PMC7474779 DOI: 10.1155/2020/4247128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 06/08/2020] [Accepted: 08/04/2020] [Indexed: 05/06/2023]
Abstract
Okanin is a major flavonoid found in Coreopsis tinctoria Nutt., arousing huge interest recently for its considerable biological characteristics including antioxidant, antineurotoxic, and antidiabetic activities. An ultrahigh performance liquid chromatography triple-quadrupole tandem mass spectrometry (UPLC-MS) was successfully used to determine okanin in rat plasma after oral administration of okanin. Bavachalcone acted as an internal standard (IS). By gradient elution, IS and analyte were separated on a C18 column for 7 min at a flow rate of 0.25 mL/min with acetonitrile-0.1% acetic acid mobile phase. The stability, matrix effect, extraction recovery, accuracy, precision, linearity, and selectivity of the method were firstly demonstrated. The major pharmacokinetic parameters of okanin in rat plasma were then measured using the developed UPLC-MS method. An UPLC-quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS) was finally established to obtain the specific and accurate mass of okanin in rat plasma after oral administration, and its proposed fragmentation was further elaborated.
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Affiliation(s)
- Yurui Shi
- The College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Rongda Chen
- The College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Jing Xie
- The College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Li Li
- The College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Guiming Liu
- The College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Meizhu Zheng
- The College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Ning Zhang
- The College of Jiamusi, Heilongjiang University of Chinese Medicine, Harbin 150040, China
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Tuan HN, Minh BH, Tran PT, Lee JH, Oanh HV, Ngo QMT, Nguyen YN, Lien PTK, Tran MH. The Effects of 2',4'-Dihydroxy-6'-methoxy-3',5'- dimethylchalcone from Cleistocalyx operculatus Buds on Human Pancreatic Cancer Cell Lines. Molecules 2019; 24:molecules24142538. [PMID: 31336786 PMCID: PMC6680674 DOI: 10.3390/molecules24142538] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 06/29/2019] [Accepted: 07/08/2019] [Indexed: 01/05/2023] Open
Abstract
2',4'-Dihydroxy-6'-methoxy-3',5'-dimethylchalcone (DMC), a principal natural chalcone of Cleistocalyx operculatus buds, suppresses the growth of many types of cancer cells. However, the effects of this compound on pancreatic cancer cells have not been evaluated. In our experiments, we explored the effects of this chalcone on two human pancreatic cancer cell lines. A cell proliferation assay revealed that DMC exhibited concentration-dependent cytotoxicity against PANC-1 and MIA PACA2 cells, with IC50 values of 10.5 ± 0.8 and 12.2 ± 0.9 µM, respectively. Treatment of DMC led to the apoptosis of PANC-1 by caspase-3 activation as revealed by annexin-V/propidium iodide double-staining. Western blotting indicated that DMC induced proteolytic activation of caspase-3 and -9, degradation of caspase-3 substrate proteins (including poly[ADP-ribose] polymerase [PARP]), augmented bak protein level, while attenuating the expression of bcl-2 in PANC-1 cells. Taken together, our results provide experimental evidence to support that DMC may serve as a useful chemotherapeutic agent for control of human pancreatic cancer cells.
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Affiliation(s)
- Huynh Nhu Tuan
- Hanoi University of Pharmacy, 13 Le Thanh Tong Street, Hoan Kiem District, Hanoi 100100, Vietnam
| | - Bui Hoang Minh
- Faculty of Pharmacy, Nguyen Tat Thanh University, 300C Nguyen Tat Thanh Street, District 4, Hochiminh City 72820, Vietnam
| | - Phuong Thao Tran
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon-Do 24414, Korea
| | - Jeong Hyung Lee
- Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon, Gangwon-Do 24414, Korea
| | - Ha Van Oanh
- Hanoi University of Pharmacy, 13 Le Thanh Tong Street, Hoan Kiem District, Hanoi 100100, Vietnam
| | - Quynh Mai Thi Ngo
- College of Pharmacy, Hai Phong University of Medicine and Pharmacy, 72A Nguyen Binh Khiem, Hai Phong 180000, Vietnam
| | - Yen Nhi Nguyen
- Faculty of Biology and Biotechnology, University of Science, Vietnam National University Hochiminh City, 227 Nguyen Van Cu, District 5, Hochiminh City 748000, Vietnam
| | - Pham Thi Kim Lien
- Biomedical Sciences Department, Institute for Research & Executive Education (VNUK), The University of Danang, 158A Le Loi, Hai Chau District, Danang City 551000, Vietnam
| | - Manh Hung Tran
- Biomedical Sciences Department, Institute for Research & Executive Education (VNUK), The University of Danang, 158A Le Loi, Hai Chau District, Danang City 551000, Vietnam.
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17
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Jiang B, Lv Q, Wan W, Le L, Xu L, Hu K, Xiao P. Transcriptome analysis reveals the mechanism of the effect of flower tea Coreopsis tinctoria on hepatic insulin resistance. Food Funct 2019; 9:5607-5620. [PMID: 30370909 DOI: 10.1039/c8fo00965a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Non-Camellia tea and herbal medicine help prevent the development of diabetes and other metabolic diseases. Previous studies revealed that Coreopsis tinctoria (CT) flower tea increases insulin sensitivity and, in some high-fat diet (HFD)-fed rats, even prevents hepatic metabolic disorders. However, the molecular mechanisms by which CT improves insulin resistance are not known. In this study, six-week-old rats were fed a normal diet (ND), an HFD or an HFD supplemented with CT for 8 weeks. Serum samples were collected, and the livers were extracted for RNA-seq gene expression analysis. Real-time PCR and western blotting further verified the RNA-seq results. In our results, dietary CT ameliorated HFD-induced hepatosteatosis, glucose intolerance, and insulin resistance. In the HFD group, 1667 differentially expressed genes (DEGs) were identified compared with the ND group. In the CT group, 327 DEGs were identified compared with the HFD group. Some of these DEGs were related to insulin signalling, hepatic lipogenesis and glucose homeostasis. This study suggested that insulin resistance with hyperinsulinaemia, and not insulin insufficiency, is an early problem in HFD-fed rats, and CT downregulates insulin secretion genes (e.g., Rasd1, Stxbp1 and Sfxn1). Hepatic gene and protein expression analyses indicated that the regulatory effects of CT on glucose and lipid homeostasis are likely mediated via the Akt/FoxO1 signalling pathway and are regulated by the transcription factors hairy and enhancer of split 1 (HES1) and small heterodimer partner (SHP). Our study provides transcriptomic evidence of the complex pathogenic mechanism involved in hepatic insulin resistance and proves that supplementation with CT improves insulin resistance at a global scale.
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Affiliation(s)
- Baoping Jiang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100193, China.
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Le L, Fu H, Lv Q, Bai X, Zhao Y, Xiang J, Jiang B, Hu K, Chen S. The protective effects of the native flavanone flavanomarein on neuronal cells damaged by 6-OHDA. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2019; 53:193-204. [PMID: 30668399 DOI: 10.1016/j.phymed.2018.09.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 06/28/2018] [Accepted: 09/03/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Flavanomarein is the main component of Coreopsis tinctoria Nutt. (C. tinctoria), which is a globally well-known flower tea that has a distinct flavor and many beneficial health effects, such as antioxidant activities. We aimed to explore the effect of flavanomarein on a 6-hydroxydopamine (6-OHDA)-lesioned cell model of oxidative stress. METHODS In this study, we used 6-OHDA-lesioned PC12 cells and primary cortical neurons to investigate the protective effects of flavanomarein and its potential mechanism. RESULTS The results indicated that pretreatment with flavanomarein (25, 50, or 100 µM for 24 h) significantly increased the cell viability, reduced the lactate dehydrogenase (LDH) release and improved the mitochondrial membrane potential (∆Ψm) and mitochondrial impairment. Additionally, flavanomarein markedly reduced the gene expression of tumor necrosis factor (TNF)-α and protein kinase C ζ (PKC-ζ), the nuclear translocation of p65, and the levels of p-AMPK-α and acetyl-p53. Flavanomarein also elevated the gene expression of P85α, PKC-β1, and Bcl-2, the protein expression of Sirt1 and ICAD, and the phosphorylation level of AKT. CONCLUSIONS Together, these results suggest that flavanomarein protects PC12 cells and primary cortical neurons from 6-OHDA-induced neurotoxicity by upregulating the PI3K/AKT signaling pathway and attenuating the nuclear factor kappa B (NF-κB) signaling pathway. Therefore, our study provides evidence that may aid in the development of a potential compound against 6-OHDA toxicity.
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Affiliation(s)
- Liang Le
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China; Post-doctoral Scientific Research Center, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Hui Fu
- Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Qiuyue Lv
- Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Xue Bai
- Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Ying Zhao
- Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Jiamei Xiang
- Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Baoping Jiang
- Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China.
| | - Keping Hu
- Institute of Medicinal Plant Development (IMPLAD), Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Shilin Chen
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China.
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Guo H, Yuan Q, Fu Y, Liu W, Su YH, Liu H, Wu CY, Zhao L, Zhang Q, Lin DR, Chen H, Qin W, Wu DT. Extraction Optimization and Effects of Extraction Methods on the Chemical Structures and Antioxidant Activities of Polysaccharides from Snow Chrysanthemum ( Coreopsis Tinctoria). Polymers (Basel) 2019; 11:E215. [PMID: 30960199 PMCID: PMC6419038 DOI: 10.3390/polym11020215] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 01/19/2019] [Accepted: 01/23/2019] [Indexed: 12/17/2022] Open
Abstract
In order to explore snow chrysanthemum polysaccharides (SCPs) as functional food ingredients and natural antioxidants for industrial applications, both microwave-assisted extraction (MAE) and ultrasonic-assisted extraction (UAE) were firstly optimized for the extraction of SCPs. Furthermore, the effects of conventional hot water extraction, UAE, and MAE on the chemical structures and antioxidant activities of SCPs were investigated. The maximum extraction yields of SCPs extracted by UAE (4.13 ± 0.24%) and MAE (4.26 ± 0.21%) were achieved at the optimized extraction parameters as follows: ultrasound amplitude (68%) and microwave power (500 W), ultrasound extraction time (21 min) and microwave extraction time (6.5 min), and ratio of liquid to raw material (42.0 mL/g for UAE and 59.0 mL/g for MAE). In addition, different extraction methods significantly affected the contents of uronic acids, the molecular weights, the molar ratio of constituent monosaccharides, and the degree of esterification of SCPs. SCPs exhibited remarkable DPPH (IC50 ≤ 1.702 mg/mL), ABTS (IC50 ≤ 1.121 mg/mL), and nitric oxide (IC50 ≤ 0.277 mg/mL) radical scavenging activities, as well as reducing power (≥ 80.17 ± 4.8 μg Trolox/mg), which suggested that SCPs might be one of the major contributors toward the antioxidant activities of snow chrysanthemum tea. The high antioxidant activities (DPPH, IC50 = 0.693 mg/mL; ABTS, IC50 = 0.299 mg/mL; nitric oxide, IC50 = 0.105 mg/mL; and reducing power, 127.79 ± 2.57 μg Trolox/mg) observed in SCP-M extracted by the MAE method might be partially attributed to its low molecular weight and high content of unmethylated galacturonic acids. Results suggested that the MAE method could be an efficient technique for the extraction of SCPs with high antioxidant activity, and SCPs could be further explored as natural antioxidants for industrial application.
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Affiliation(s)
- Huan Guo
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China.
| | - Qin Yuan
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China.
| | - Yuan Fu
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China.
| | - Wen Liu
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China.
| | - Ya-Hong Su
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China.
| | - Hui Liu
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China.
| | - Chao-Yi Wu
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China.
| | - Li Zhao
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China.
| | - Qing Zhang
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China.
| | - De-Rong Lin
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China.
| | - Hong Chen
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China.
| | - Wen Qin
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China.
| | - Ding-Tao Wu
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China.
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20
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Setzer WN. The Phytochemistry of Cherokee Aromatic Medicinal Plants. MEDICINES (BASEL, SWITZERLAND) 2018; 5:E121. [PMID: 30424560 PMCID: PMC6313439 DOI: 10.3390/medicines5040121] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 11/06/2018] [Accepted: 11/08/2018] [Indexed: 12/13/2022]
Abstract
Background: Native Americans have had a rich ethnobotanical heritage for treating diseases, ailments, and injuries. Cherokee traditional medicine has provided numerous aromatic and medicinal plants that not only were used by the Cherokee people, but were also adopted for use by European settlers in North America. Methods: The aim of this review was to examine the Cherokee ethnobotanical literature and the published phytochemical investigations on Cherokee medicinal plants and to correlate phytochemical constituents with traditional uses and biological activities. Results: Several Cherokee medicinal plants are still in use today as herbal medicines, including, for example, yarrow (Achillea millefolium), black cohosh (Cimicifuga racemosa), American ginseng (Panax quinquefolius), and blue skullcap (Scutellaria lateriflora). This review presents a summary of the traditional uses, phytochemical constituents, and biological activities of Cherokee aromatic and medicinal plants. Conclusions: The list is not complete, however, as there is still much work needed in phytochemical investigation and pharmacological evaluation of many traditional herbal medicines.
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Affiliation(s)
- William N Setzer
- Department of Chemistry, University of Alabama in Huntsville, Huntsville, AL 35899, USA.
- Aromatic Plant Research Center, 230 N 1200 E, Suite 102, Lehi, UT 84043, USA.
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Du D, Yao L, Zhang R, Shi N, Shen Y, Yang X, Zhang X, Jin T, Liu T, Hu L, Xing Z, Criddle DN, Xia Q, Huang W, Sutton R. Protective effects of flavonoids from Coreopsis tinctoria Nutt. on experimental acute pancreatitis via Nrf-2/ARE-mediated antioxidant pathways. JOURNAL OF ETHNOPHARMACOLOGY 2018; 224:261-272. [PMID: 29870787 DOI: 10.1016/j.jep.2018.06.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 05/12/2018] [Accepted: 06/01/2018] [Indexed: 02/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Oxidative stress is a prominent feature of clinical acute pancreatitis (AP). Coreopsis tinctoria has been used traditionally to treat pancreas disorders like diabetes mellitus in China and Portugal and its flavonoid-rich fraction contain the main phytochemicals that have antioxidant and anti-inflammatory activities. AIM OF THE STUDY To investigate the effects of flavonoids isolated from C. tinctoria on experimental AP and explore the potential mechanism. MATERIALS AND METHODS LC-MS based online technique was used to analyse and isolate targeted flavonoids from C. tinctoria. Freshly isolated mouse pancreatic acinar cells were treated with taurocholic acid sodium salt hydrate (NaT, 5 mM) with or without flavonoids. Fluorescence microscopy and a plate reader were used to determine necrotic cell death pathway activation (propidium iodide), reactive oxygen species (ROS) production (H2-DCFDA) and ATP depletion (luminescence) where appropriate. AP was induced by 7 repeated intraperitoneal caerulein injections (50 μg/kg) at hourly interval in mice or retrograde infusion of taurolithocholic acid 3-sulfate disodium salt (TLCS; 5 mM, 50 μL) into the pancreatic duct in mice or infusion of NaT (3.5%, 1 mL/kg) in rats. A flavonoid was intraperitoneally administered at 0, 4, and 8 h after the first caerulein injection or post-operation. Disease severity, oxidative stress and antioxidant markers were determined. RESULTS Total flavonoids extract and flavonoids 1-6 (C1-C6) exhibited different capacities in reducing necrotic cell death pathway activation with 0.5 mM C1, (2 R,3 R)-taxifolin 7-O-β-D-glucopyranoside, having the best effect. C1 also significantly reduced NaT-induced ROS production and ATP depletion. C1 at 12.5 mg/kg and 8.7 mg/kg (equivalent to 12.5 mg/kg for mice) significantly reduced histopathological, biochemical and immunological parameters in the caerulein-, TLCS- and NaT-induced AP models, respectively. C1 administration increased pancreatic nuclear factor erythroid 2-related factor 2 (Nrf2) and Nrf2-medicated haeme oxygenase-1 expression and elevated pancreatic antioxidant enzymes superoxide dismutase and glutathione peroxidase levels. CONCLUSIONS Flavonoid C1 from C. tinctoria was protective in experimental AP and this effect may at least in part be attributed to its antioxidant effects by activation of Nrf2-mediated pathways. These results suggest the potential utilisation of C. tinctoria to treat AP.
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Affiliation(s)
- Dan Du
- West China-Washington Mitochondria and Metabolism Centre, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China.
| | - Linbo Yao
- Department of Integrated Traditional Chinese and Western Medicine, Sichuan Provincial Pancreatitis Centre and West China-Liverpool Biomedical Research Centre, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China
| | - Rui Zhang
- Laboratory of Ethnopharmacology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Na Shi
- Department of Integrated Traditional Chinese and Western Medicine, Sichuan Provincial Pancreatitis Centre and West China-Liverpool Biomedical Research Centre, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China
| | - Yan Shen
- Laboratory of Ethnopharmacology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xinmin Yang
- Department of Integrated Traditional Chinese and Western Medicine, Sichuan Provincial Pancreatitis Centre and West China-Liverpool Biomedical Research Centre, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China
| | - Xiaoying Zhang
- Department of Integrated Traditional Chinese and Western Medicine, Sichuan Provincial Pancreatitis Centre and West China-Liverpool Biomedical Research Centre, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China
| | - Tao Jin
- Department of Integrated Traditional Chinese and Western Medicine, Sichuan Provincial Pancreatitis Centre and West China-Liverpool Biomedical Research Centre, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China
| | - Tingting Liu
- Department of Integrated Traditional Chinese and Western Medicine, Sichuan Provincial Pancreatitis Centre and West China-Liverpool Biomedical Research Centre, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China
| | - Liqiang Hu
- West China-Washington Mitochondria and Metabolism Centre, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China
| | - Zhihua Xing
- Laboratory of Ethnopharmacology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - David N Criddle
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool L69 3BX, UK
| | - Qing Xia
- Department of Integrated Traditional Chinese and Western Medicine, Sichuan Provincial Pancreatitis Centre and West China-Liverpool Biomedical Research Centre, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China
| | - Wei Huang
- Department of Integrated Traditional Chinese and Western Medicine, Sichuan Provincial Pancreatitis Centre and West China-Liverpool Biomedical Research Centre, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China; Liverpool Pancreatitis Study Group, Institute of Translational Medicine, University of Liverpool, Liverpool L69 3GE, UK.
| | - Robert Sutton
- Liverpool Pancreatitis Study Group, Institute of Translational Medicine, University of Liverpool, Liverpool L69 3GE, UK
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Inhibition of metabolic disorders in vivo and in vitro by main constituent of Coreopsis tinctoria. CHINESE HERBAL MEDICINES 2018. [DOI: 10.1016/j.chmed.2018.03.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Lam SC, Liu X, Chen XQ, Hu DJ, Zhao J, Long ZR, Fan B, Li SP. Chemical characteristics of different parts of Coreopsis tinctoria in China using microwave-assisted extraction and high-performance liquid chromatography followed by chemometric analysis. J Sep Sci 2018; 39:2919-27. [PMID: 27291468 DOI: 10.1002/jssc.201600365] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Revised: 05/23/2016] [Accepted: 05/24/2016] [Indexed: 12/26/2022]
Abstract
Coreopsis tinctoria, also called "snow chrysanthemum" in China, is a flower tea material that has been reported to possess excellent pharmacological properties such as antioxidant and antidiabetic activities. The chemical characteristics of different parts (flowers, buds, seeds, stems, and leaves) of C. tinctoria were investigated based on microwave-assisted extraction and the simultaneous determination of 13 major active compounds by high-performance liquid chromatography, including taxifolin-7-O-glucoside, chlorogenic acid, (R/S)-flavanomarein, isocoreopsin, quercetagetin-7-O-glucoside, isookanin, 5,7,3',5'-tetrahydroxyflavanone-7-O-glucoside, marein, 3,5-dicaffeoylquinic acid, coreopsin, okanin, 5,7,3',5'-tetrahydroxyflavanone, and N(1) ,N(5) ,N(10) ,N(14) -tetra-p-coumaroylspermine. Chemometric analysis based on the contents of investigated compounds from 13 samples showed that C. tinctoria and the related flower tea materials, Chrysanthemum morifolium cv "Hangju" and "Gongju," were in different clusters, and different parts (flowers, buds, seeds, stems, and leaves) of C. tinctoria were obviously different. This study is helpful for the quality control and pharmacological evaluation of different parts from C. tinctoria and its related products.
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Affiliation(s)
- Shing-Chung Lam
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Xin Liu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Xian-Qiang Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - De-Jun Hu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Jing Zhao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Ze-Rong Long
- Xinjiang Uygur Autonomous Region Product Quality Supervision and Inspection Institute, Urumqi, China
| | - Bing Fan
- Urumqi Jiangqi Agriculture Development Co. Ltd, Urumqi, China
| | - Shao-Ping Li
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
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Liang Y, Niu H, Ma L, Du D, Wen L, Xia Q, Huang W. Eriodictyol 7‑O‑β‑D glucopyranoside from Coreopsis tinctoria Nutt. ameliorates lipid disorders via protecting mitochondrial function and suppressing lipogenesis. Mol Med Rep 2017. [PMID: 28627652 PMCID: PMC5562022 DOI: 10.3892/mmr.2017.6743] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Coreopsis tinctoria (snow chrysanthemum) has been reported to exert antihyperlipidemic effects. The present study aimed to identify the active compounds of Coreopsis tinctoria and to investigate the molecular mechanisms underlying its effects on lipid dysregulation by measuring lipid levels, reactive oxygen species, lipid peroxidation and fatty acid synthesis. The present results demonstrated that snow chrysanthemum aqueous extracts significantly reduced serum lipid levels and oxidative stress in vivo. The main compounds that were isolated were identified as flavanomarein (compound 1) and eriodictyol 7-O-β-D glucopyranoside (compound 2). Compounds 1 and 2 demonstrated potent antioxidative properties, including free radical scavenging activity, inhibition of lipid peroxidation, as well as lipid-lowering effects in human HepG2 hepatocellular carcinoma cells treated with free fatty acids (FFAs). Compound 2 was revealed to suppress the elevation of triglyceride levels and inhibit lipid peroxidation following FFA treatment. In addition, it was demonstrated to significantly reduce intracellular levels of reactive oxygen species and improve the mitochondrial membrane potential and adenosine triphosphate levels, thus protecting mitochondrial function in FFA-treated HepG2 cells. Furthermore, compound 2 markedly suppressed the protein expression levels of disulfide-isomerase A3 precursor and fatty acid synthase, thus suppressing FFA-induced lipogenesis in HepG2 cells. In conclusion, the present study identified compound 2 as one of the main active compounds in Coreopsis tinctoria responsible for its lipid-lowering effects. Compound 2 was revealed to possess antihyperlipidemic properties, exerted via reducing oxidative stress, protecting mitochondrial function and suppressing lipogenesis.
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Affiliation(s)
- Yuyan Liang
- Laboratory of Ethnopharmacology, Department of Integrated Traditional Chinese and Western Medicine, Regenerative Medicine Research Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Hai Niu
- Laboratory of Ethnopharmacology, Department of Integrated Traditional Chinese and Western Medicine, Regenerative Medicine Research Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Limei Ma
- Laboratory of Ethnopharmacology, Department of Integrated Traditional Chinese and Western Medicine, Regenerative Medicine Research Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Dan Du
- Laboratory of Ethnopharmacology, Department of Integrated Traditional Chinese and Western Medicine, Regenerative Medicine Research Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Li Wen
- Laboratory of Ethnopharmacology, Department of Integrated Traditional Chinese and Western Medicine, Regenerative Medicine Research Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Qing Xia
- Laboratory of Ethnopharmacology, Department of Integrated Traditional Chinese and Western Medicine, Regenerative Medicine Research Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Wen Huang
- Laboratory of Ethnopharmacology, Department of Integrated Traditional Chinese and Western Medicine, Regenerative Medicine Research Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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Tsai JC, Chiu CS, Chen YC, Lee MS, Hao XY, Hsieh MT, Kao CP, Peng WH. Hepatoprotective effect of Coreopsis tinctoria flowers against carbon tetrachloride-induced liver damage in mice. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 17:139. [PMID: 28259154 PMCID: PMC5336617 DOI: 10.1186/s12906-017-1604-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 01/25/2017] [Indexed: 11/10/2022]
Abstract
Background Coreopsis tinctoria is a traditional remedy for the management of various diseases including hepatitis. The hepatoprotective role of the plant is not scientifically explored till now. This study was designed to investigate the hepatoprotective potentials of the ethanol extract from C. tinctoria (CTEtOH) using an animal model of carbon tetrachloride (CCl4)-induced acute liver injury. Methods CTEtOH (0.5 and 1.0 g/kg) and silymarin (200 mg/kg) were administered to the experimental mice for 7 days followed by 0.2% CCl4 (10 mL/kg of body weight (bw), ip), then all mice were sacrificed after 24 h. The serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels were measured. Histological analysis of liver was performed. The tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), interleukin-6 (IL-6), nitric oxide (NO), malondialdehyde (MDA), and antioxidant enzymatic activities were also measured.. Results The results revealed that the serum ALT and AST levels significantly decreased after treatment with CTEtOH. Moreover, histological analyses indicated that CTEtOH (0.5 and 1.0 g/kg) and silymarin reduced the extent of CCl4-induced liver lesions. CTEtOH (0.5 and 1.0 g/kg) reduced the levels of malondialdehyde, nitric oxide, and proinflammatory cytokines (TNF-α and IL-1β). Furthermore, CTEtOH (1.0 g/kg) reduced the level of IL-6. The activities of antioxidant enzymes, namely superoxide dismutase and glutathione reductase, significantly increased after treatment with CTEtOH (0.5 and 1.0 g/kg) and that of glutathione peroxidase increased after treatment with 1.0 g/kg of CTEtOH. Conclusions These results demonstrate the hepatoprotective effect of CTEtOH against CCl4-induced acute liver injury in mice, and the underlying hepatoprotective mechanisms are associated with antioxidant and antiproinflammatory activities.
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Han H, Ma Z, Wang W, Xu M, Zhou S, Li L, Jiang H. Deglycosylation and absorption of marein, flavanomarein and taxifolin-7-O-β-D-glucopyranoside from capitula of Coreopsis tinctoria in rats and humans. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.09.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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Yang Y, Sun X, Liu J, Kang L, Chen S, Ma B, Guo B. Quantitative and Qualitative Analysis of Flavonoids and Phenolic Acids in Snow Chrysanthemum (Coreopsis tinctoria Nutt.) by HPLC-DAD and UPLC-ESI-QTOF-MS. Molecules 2016; 21:molecules21101307. [PMID: 27706037 PMCID: PMC6272912 DOI: 10.3390/molecules21101307] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 09/22/2016] [Accepted: 09/25/2016] [Indexed: 11/16/2022] Open
Abstract
A simple, accurate and reliable high performance liquid chromatography coupled with photodiode array detection (HPLC-DAD) method was developed and then successfully applied for simultaneous quantitative analysis of eight compounds, including chlorogenic acid (1), (R/S)-flavanomarein (2), butin-7-O-β-d-glucopyranoside (3), isookanin (4), taxifolin (5), 5,7,3′,5′-tetrahydroxyflavanone-7-O-β-d-glucopyranoside (6), marein (7) and okanin (8), in 23 batches of snow chrysanthemum of different seed provenance and from various habitats. The results showed total contents of the eight compounds in the samples with seed provenance from Keliyang (Xinjiang, China), are higher than in samples from the other five provenances by 52.47%, 15.53%, 19.78%, 21.17% and 5.06%, respectively, which demonstrated that provenance has a great influence on the constituents in snow chrysanthemum. Meanwhile, an ultra performance liquid chromatography coupled with electrospray ionization and quadrupole time-of-flight-mass spectrometry (UPLC-ESI-QTOF-MS) was also employed to rapidly separate and identify flavonoids and phenolic acids in snow chrysanthemum from Keliyang. As a result, a total of 30 constituents, including 26 flavonoids and four phenolic acids, were identified or tentatively identified based on the exact mass information, the fragmentation characteristics, and retention times of eight reference standards. This work may provide an efficient approach to comprehensively evaluate the quality of snow chrysanthemum.
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Affiliation(s)
- Yinjun Yang
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China.
- Department of Biology, Beijing Institute of Radiation Medicine, Beijing 100850, China.
| | - Xinguang Sun
- Department of Biology, Beijing Institute of Radiation Medicine, Beijing 100850, China.
| | - Jinjun Liu
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China.
| | - Liping Kang
- Department of Biology, Beijing Institute of Radiation Medicine, Beijing 100850, China.
| | - Sibao Chen
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China.
| | - Baiping Ma
- Department of Biology, Beijing Institute of Radiation Medicine, Beijing 100850, China.
| | - Baolin Guo
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100193, China.
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Jiang B, Le L, Liu H, Xu L, He C, Hu K, Peng Y, Xiao P. Marein protects against methylglyoxal-induced apoptosis by activating the AMPK pathway in PC12 cells. Free Radic Res 2016; 50:1173-1187. [DOI: 10.1080/10715762.2016.1222374] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Baoping Jiang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
- State Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing, China
| | - Liang Le
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Haibo Liu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
- State Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing, China
| | - Lijia Xu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
- State Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing, China
| | - Chunnian He
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
- State Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing, China
| | - Keping Hu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Yong Peng
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
- State Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing, China
| | - Peigen Xiao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
- State Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing, China
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Lam SC, Lam SF, Zhao J, Li SP. Rapid Identification and Comparison of Compounds with Antioxidant Activity in Coreopsis tinctoria Herbal Tea by High-Performance Thin-Layer Chromatography Coupled with DPPH Bioautography and Densitometry. J Food Sci 2016; 81:C2218-23. [PMID: 27516219 DOI: 10.1111/1750-3841.13402] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 06/23/2016] [Accepted: 06/26/2016] [Indexed: 12/12/2022]
Abstract
A simple and efficient method based on high-performance thin-layer chromatography coupled with 2,2-diphenyl-1-picrylhydrazyl (DPPH) bioautography (HPTLC-DPPH) was established for the screening and comparison of antioxidants in different parts of Coreopsis tinctoria herbal tea from different origins and other related herbal tea materials, which used Chrysanthemum morifolium cv. "Gongju" and "Hangju" in this study. Scanning densitometry after DPPH derivatization was applied for the determination of antioxidant capacities of isolated compounds in each sample. It is considered that ethanol extracts of C. tinctoria had stronger antioxidant activity and more characteristic bands than those of 2 compared samples, C. morifolium cv. "Gongju" and "Hangju." Chemometric analysis results showed that the combination of hierarchical clustering analysis and principal component analysis based on determined antioxidant capacities could be used for the discrimination of different parts of C. tinctoria and C. morifolium. Results showed that 7 compounds made up the major contributions of antioxidant activity in C. tinctoria, including okanin, isookanin, marein, flavanomarein, 5,7,3',5'-tetrahydroxyflavanone-7-O-glucoside, 3,5-dicaffeoylquinic acid, and chlorogenic acid. Therefore, 7 compounds were identified as major antioxidant biomarkers for quality control of C. tinctoria. Results demonstrated that the established method could be applied for the identification of C. tinctoria, and were beneficial for the bioactivity-based quality control of C. tinctoria.
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Affiliation(s)
- Shing-Chung Lam
- State Key Laboratory of Quality Research in Chinese Medicine, Inst. of Chinese Medical Sciences, Univ. of Macau, Macao, China
| | - Sio-Fong Lam
- State Key Laboratory of Quality Research in Chinese Medicine, Inst. of Chinese Medical Sciences, Univ. of Macau, Macao, China
| | - Jing Zhao
- State Key Laboratory of Quality Research in Chinese Medicine, Inst. of Chinese Medical Sciences, Univ. of Macau, Macao, China.
| | - Shao-Ping Li
- State Key Laboratory of Quality Research in Chinese Medicine, Inst. of Chinese Medical Sciences, Univ. of Macau, Macao, China
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Wang J, Aierken G, Li X, Li L, Mao X. Testing the absorption of the extracts of Coreopsis tinctoria Nutt. in the intestinal canal in rats using an Ussing chamber. JOURNAL OF ETHNOPHARMACOLOGY 2016; 186:73-83. [PMID: 27045866 DOI: 10.1016/j.jep.2016.03.061] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 03/25/2016] [Accepted: 03/30/2016] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Coreopsis tinctoria Nutt mainly distributed in Hetian region of Xinjiang at an altitude of 3000m, which is used as Uyghur traditional medicine because of its clearing heat, promoting circulation and removing toxicity and antihypertension, ect. effect. AIM OF THE STUDY This research was to study the four ingredients in the extracts of Coreopsis tinctoria Nutt. that are absorbed in different intestinal segments in rats to lay the foundation for further study on the effective constituents, tissue distribution, metabolism, and spectrum-effect relationships of these extracts. MATERIALS AND METHODS High, medium, and low concentrations were prepared according to their pharmacological effects. Quantitative analysis multi-components by single marker was used to test the cumulative absorption volume Q, absorption rate constant Ka, and apparent permeability coefficient Papp of the four main ingredients in C. tinctoria Nutt. extract in different intestinal segments in rats using a Ussing chamber model and high-performance liquid chromatography. RESULTS The Papp of chlorogenic acid and flavanomarein in the duodenum, jejunum, ileum, and colon were 1.0×10(-6) to 10×10(-6)cms(-1). Papp of marein in the duodenum and jejunum was <1.0×10(-6), and was 1.0×10(-6) to 10×10(-6)cms(-1) in the ileum and colon. Papp of 3,5-O-dicaffeoylquinic acid in the duodenum was <1.0×10(-6)cms(-1), while it was 1.0×(1)0(-6) to 10×10(-6)cms(-1) in the jejunum, ileum, and colon. CONCLUSIONS All four chemical components of the plant extract can be absorbed by the intestinal canal of rats, which conforms to zero-order absorption; the ileum presented the best absorption.
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Affiliation(s)
- Jian Wang
- Department of Pharmacology, Basic Medicine College, Xinjiang Medical University, Urumqi 830054, Xinjiang, China
| | - Guzhalinuer Aierken
- Analytical & Testing Center, Xinjiang Medical University, Urumqi 830054, Xinjiang, China
| | - Xinxia Li
- Analytical & Testing Center, Xinjiang Medical University, Urumqi 830054, Xinjiang, China
| | - Linlin Li
- Department of Pharmacology, Basic Medicine College, Xinjiang Medical University, Urumqi 830054, Xinjiang, China
| | - Xinmin Mao
- Department of Pharmacology, Basic Medicine College, Xinjiang Medical University, Urumqi 830054, Xinjiang, China; Affiliated Traditional Chinese Medicine College, Xinjiang Medical University, Urumqi 830054, Xinjiang, China.
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Du D, Jin T, Xing ZH, Hu LQ, Long D, Li SF, Gong M. One new linear C14 polyacetylene glucoside with antiadipogenic activities on 3T3-L1 cells from the capitula of Coreopsis tinctoria. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2016; 18:784-90. [PMID: 26959764 DOI: 10.1080/10286020.2016.1157077] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Dan Du
- West China-Washington Mitochondria and Metabolism Center, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China
| | - Tao Jin
- Department of Integrated Traditional Chinese and Western Medicine, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Zhi-Hua Xing
- Laboratory of Ethnopharmacology, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China
| | - Li-Qiang Hu
- West China-Washington Mitochondria and Metabolism Center, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China
| | - Dan Long
- Key Laboratory of Transplant Engineering and Immunology, Ministry of Health, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Sheng-Fu Li
- Key Laboratory of Transplant Engineering and Immunology, Ministry of Health, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Meng Gong
- West China-Washington Mitochondria and Metabolism Center, West China Hospital/West China Medical School, Sichuan University, Chengdu 610041, China
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Cai W, Yu L, Zhang Y, Feng L, Kong S, Tan H, Xu H, Huang C. Extracts of Coreopsis tinctoria Nutt. Flower Exhibit Antidiabetic Effects via the Inhibition of α-Glucosidase Activity. J Diabetes Res 2016; 2016:2340276. [PMID: 27088095 PMCID: PMC4819113 DOI: 10.1155/2016/2340276] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 02/11/2016] [Accepted: 02/16/2016] [Indexed: 12/28/2022] Open
Abstract
The aim of this study was to assay the effects of Coreopsis tinctoria Nutt. flower extracts on hyperglycemia of diet-induced obese mice and the underlying mechanisms. Coreopsis tinctoria flower was extracted with ethanol and water, respectively. The total phenol, flavonoid levels, and the constituents of the extracts were measured. For the animal experiments, C57BL/6 mice were fed with a chow diet, high-fat diet, or high-fat diet mixed with 0.4% (w/w) water and ethanol extracts of Coreopsis tinctoria flower for 8 weeks. The inhibitory effects of the extracts on α-glucosidase activity and the antioxidant properties were assayed in vitro. We found that the extracts blocked the increase of fasting blood glucose, serum triglyceride (TG), insulin, leptin, and liver lipid levels and prevented the development of glucose tolerance impairment and insulin resistance in the C57BL/6 mice induced by a high-fat diet. The extracts inhibited α-glycosidase activity and increased oxidant activity in vitro. In conclusion, Coreopsis tinctoria flower extracts may ameliorate high-fat diet-induced hyperglycemia and insulin resistance. The underling mechanism may be via the inhibition of α-glucosidase activity. Our data indicate that Coreopsis tinctoria flower could be used as a beverage supplement and a potential source of drugs for treatment of diabetics.
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Affiliation(s)
- Wujie Cai
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Lijing Yu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Yu Zhang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Li Feng
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Siyuan Kong
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Hongsheng Tan
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Hongxi Xu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Cheng Huang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
- *Cheng Huang:
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Chen LX, Hu DJ, Lam SC, Ge L, Wu D, Zhao J, Long ZR, Yang WJ, Fan B, Li SP. Comparison of antioxidant activities of different parts from snow chrysanthemum (Coreopsis tinctoria Nutt.) and identification of their natural antioxidants using high performance liquid chromatography coupled with diode array detection and mass spectrometry and 2,2'-azinobis(3-ethylbenzthiazoline-sulfonic acid)diammonium salt-based assay. J Chromatogr A 2015; 1428:134-42. [PMID: 26521095 DOI: 10.1016/j.chroma.2015.10.037] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 10/10/2015] [Accepted: 10/14/2015] [Indexed: 11/19/2022]
Abstract
Snow chrysanthemum (Coreopsis tinctoria Nutt.), a world-widely well-known flower tea material, has attracted more and more attention because of its beneficial health effects such as antioxidant activity and special flavor. In this study, a high performance liquid chromatography coupled with diode array detection and mass spectrometry (HPLC-DAD-MS) and 2,2'-azinobis(3-ethylbenzthiazoline-sulfonic acid)diammonium salt (ABTS) based assay was employed for comparison and identification of antioxidants in different samples of snow chrysanthemum. The results showed that snow chrysanthemum flowers possessed the highest while stems presented the lowest antioxidant capacities. Fourteen detected peaks with antioxidant activity were temporarily identified as 3,4',5,6,7-pentahydroxyflavanone-O-hexoside, chlorogenic acid, 2R-3',4',8-trihydroxyflavanone-7-O-glucoside, flavanomarein, flavanocorepsin, flavanokanin, quercetagitin-7-O-glucoside, 3',5,5',7-tetrahydroxyflavanone-O-hexoside, marein, maritimein, 1,3-dicaffeoylquinic acid, coreopsin, okanin and acetyl-marein by comparing their UV spectra, retention times and MS data with standards or literature data. Antioxidants existed in snow chrysanthemum are quite different from those reported in Chrysanthemum morifolium, a well-known traditional beverage in China, which indicated that snow chrysanthemum may be a promising herbal tea material with obvious antioxidant activity.
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Affiliation(s)
- L X Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao
| | - D J Hu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao
| | - S C Lam
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao
| | - L Ge
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao
| | - D Wu
- China Science and Technology Exchange Center, Beijing 100045, China
| | - J Zhao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao.
| | - Z R Long
- Xinjiang Uygur Autonomous Region Product Quality Supervision and Inspection Institute, Urumqi 830011, China
| | - W J Yang
- Xinjiang Uygur Autonomous Region Product Quality Supervision and Inspection Institute, Urumqi 830011, China
| | - B Fan
- Urumqi Jiangqi Agriculture Development Co. Ltd., Urumqi 830011, China
| | - S P Li
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao.
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Jiang B, Le L, Wan W, Zhai W, Hu K, Xu L, Xiao P. The Flower Tea Coreopsis tinctoria Increases Insulin Sensitivity and Regulates Hepatic Metabolism in Rats Fed a High-Fat Diet. Endocrinology 2015; 156:2006-18. [PMID: 25774555 DOI: 10.1210/en.2015-1015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
An infusion of Coreopsis tinctoria (CT) flowering tops is traditionally used in Portugal to control hyperglycemia; however, the effects of CT protection against high-fat diet (HFD)-induced hepatic insulin resistance have not been systematically studied and the precise mechanism of action is not clear. The metabolomic profiles of insulin-resistant rats fed a HFD and a CT-supplemented diet (HFD supplemented with CT drinking) for 8 weeks were investigated. Serum samples for clinical biochemistry and liver samples for histopathology and liquid chromatography-mass spectrometry-based metabolomic research were collected. Western blot and quantitative real-time PCR analyses were further used to measure the expression of several relevant enzymes together with perturbed metabolic pathways. Using analysis software, the CT treatment was found to significantly ameliorate the disturbance in 10 metabolic pathways. Combined metabolomic, Western blot, and quantitative real-time PCR analyses revealed that CT treatment significantly improved the glucose homeostasis by, on the one hand, through inhibiting the expression of gluconeogenic pathway key proteins glucose-6-phosphatase and phosphoenolpyruvate carboxykinase and, on the other hand, via regulating the mRNA or protein levels of the Krebs cycle critical enzymes (citrate synthase, succinate dehydrogenase complex, subunit A, flavoprotein, and dihydrolipoamide S-succinyltransferase). These results provide metabolic evidence of the complex pathogenic mechanism involved in hepatic insulin resistance and that the supplementation with CT improves insulin resistance at a global scale. Liquid chromatography-mass spectrometry-based metabolomics approaches are helpful to further understand diabetes-related mechanisms.
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Affiliation(s)
- Baoping Jiang
- Institute of Medicinal Plant Development (B.J., L.L., W.W., W.Z., K.H., L.X., P.X.), Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100194, China; and Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine (B.J., W.W., L.X., P.X.), Ministry of Education, Beijing 100194, China
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Li Y, Chen X, Xue J, Liu J, Chen X, Wulasihan M. Flavonoids furom Coreopsis tinctoria adjust lipid metabolism in hyperlipidemia animals by down-regulating adipose differentiation-related protein. Lipids Health Dis 2014; 13:193. [PMID: 25512113 PMCID: PMC4290814 DOI: 10.1186/1476-511x-13-193] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Accepted: 11/30/2014] [Indexed: 12/22/2022] Open
Abstract
Background To identify the chemical structure of Coreopsis tinctoria extracts and their effect and mechanism on reducing blood lipid in hyperlipemia mice. Methods The flavonoids were extracted from Coreopsis tinctoria. The chemical structure was identified by HPLC. 59 mice were divided randomly into 5 groups. (group 1: normal diet control; group 2: hyperlipemia model; group 3: hyperlipemia mice treated with Coreopsis tinctoria, low dose 100 mg/kg; group 4: hyperlipemia mice treated with Coreopsis tinctoria high dose group 200 mg/kg; group 5 hyperlipemia mice treated with Fenofibrate. After 2 week of hyperlipid diet, the treatment of Coreopsis tinctoria and Fenofibrate were given for another 6 weeks with continuous hyperlipid diet. The TC, TG, HDL, histology, adipose differentiation-related protein (ADRP) expression in different groups were compared. Results Compared with normal diet group, TC, TG in hyperlipemia model group increased ( P < 0. 01). After treatment with Coreopsis tinctoria low dose group, high dose group, TC of the hyperlipemia mice decreased (P < 0. 05) without increasing AST, ALT and ALP. Fenofibrate can also decrease TC and TG but increase AST, ALT and ALP. Expression of hepatic ADRP increased in hyperlipemia mice. Coreopsis tinctoria high dose group 200 mg/kg can inhibit ADRP as Fenofibrate does. Conclusion The flavonoids from Coreopsis tinctoria extracts can reduce blood lipid without liver function damage, showing better anti- hyperlipemia effect than Fenofibrate by down-regulating ADRP.
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Affiliation(s)
| | | | | | | | - Xinhua Chen
- The Department of Internal Medicine, The First Affiliated Hospital of Xinjiang Medical University Urumqi, Xinjiang 830000, China.
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Dihydromyricetin ameliorates the oxidative stress response induced by methylglyoxal via the AMPK/GLUT4 signaling pathway in PC12 cells. Brain Res Bull 2014; 109:117-26. [PMID: 25451453 DOI: 10.1016/j.brainresbull.2014.10.010] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 10/03/2014] [Accepted: 10/20/2014] [Indexed: 01/01/2023]
Abstract
Dihydromyricetin (DMY), the major bioactive flavonoid ingredient extracted from the leaves of Ampelopsis grossedentata (Hand.-Mazz) W.T. Wang, displays multiple pharmacological activities, including oxidation resistance, antitumor properties and free radical scavenging capacities. However, the role of DMY in methylglyoxal (MG)-induced diabetes-associated cognitive decline and its underlying molecular mechanisms are unclear. The aim of the present study was to evaluate the effects of DMY on oxidative stress and glucose transport activity in a MG-induced PC12 cell line and to explore the related mechanisms. The effects of DMY on cell survival and apoptosis were examined, and the dysregulation of intracellular Ca(2+) was determined. Oxidative stress was evaluated by monitoring ROS production and the glutathione to glutathione disulfide ratio. The effects of DMY on glucose metabolism were investigated using a fluorescently labeled deoxyglucose analog and by measuring ATP and lactate production. Western blot analysis was performed to examine the protein levels of glyoxalase I (Glo-1), glucose transporter 4 (GLUT4), AMP-activated protein kinase (AMPKα) and phosphorylated AMPKα (p-AMPKα). The results revealed that DMY suppressed cellular oxidative stress in PC12 cells and balanced glucose metabolism. Additionally, DMY reduced GLUT4 translocation dysfunction and increased Glo-1 and p-AMPKα expression. We found that DMY protected PC12 cells against MG-induced apoptosis and glycometabolic disorders, at least in part by restraining the hyperactivation of p-AMPK activity and normalizing the translocation of GLUT4 from the intracellular compartment, resulting in a balance in glucose uptake. This result indicates that DMY may serve as a novel and effective candidate agent to treat diabetic encephalopathy by reducing the toxicity of MG.
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Cheung VWN, Xue B, Hernandez-Valladares M, Go MK, Tung A, Aguda AH, Robinson RC, Yew WS. Identification of polyketide inhibitors targeting 3-dehydroquinate dehydratase in the shikimate pathway of Enterococcus faecalis. PLoS One 2014; 9:e103598. [PMID: 25072253 PMCID: PMC4114755 DOI: 10.1371/journal.pone.0103598] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 07/04/2014] [Indexed: 12/28/2022] Open
Abstract
Due to the emergence of resistance toward current antibiotics, there is a pressing need to develop the next generation of antibiotics as therapeutics against infectious and opportunistic diseases of microbial origins. The shikimate pathway is exclusive to microbes, plants and fungi, and hence is an attractive and logical target for development of antimicrobial therapeutics. The Gram-positive commensal microbe, Enterococcus faecalis, is a major human pathogen associated with nosocomial infections and resistance to vancomycin, the “drug of last resort”. Here, we report the identification of several polyketide-based inhibitors against the E. faecalis shikimate pathway enzyme, 3-dehydroquinate dehydratase (DHQase). In particular, marein, a flavonoid polyketide, both inhibited DHQase and retarded the growth of Enterococcus faecalis. The purification, crystallization and structural resolution of recombinant DHQase from E. faecalis (at 2.2 Å resolution) are also reported. This study provides a route in the development of polyketide-based antimicrobial inhibitors targeting the shikimate pathway of the human pathogen E. faecalis.
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Affiliation(s)
- Vivian Wing Ngar Cheung
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Bo Xue
- Institute of Molecular and Cell Biology, Singapore, Singapore
| | | | - Maybelle Kho Go
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Alvin Tung
- Institute of Molecular and Cell Biology, Singapore, Singapore
| | | | - Robert C. Robinson
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Institute of Molecular and Cell Biology, Singapore, Singapore
- * E-mail: (RCR); (WSY)
| | - Wen Shan Yew
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Synthetic Biology Research Consortium, National University of Singapore, Singapore, Singapore
- * E-mail: (RCR); (WSY)
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Shirai A, Aihara M, Takahashi A, Maseda H, Omasa T. Synergistic antimicrobial activity based on the combined use of a gemini-quaternary ammonium compound and ultraviolet-A light. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 130:226-33. [DOI: 10.1016/j.jphotobiol.2013.11.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 11/22/2013] [Accepted: 11/27/2013] [Indexed: 10/25/2022]
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