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Cytoprotection of baicalein against oxidative stress-induced cardiomyocytes injury through the Nrf2/Keap1 pathway. J Cardiovasc Pharmacol 2015; 65:39-46. [PMID: 25343567 DOI: 10.1097/fjc.0000000000000161] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Baicalein is one of the major flavonoids found in the root of Scutellaria baicalensis Georgi. Previous studies suggest that baicalein displays protective effect on experimental cardiac models in vitro and in vivo. However, the mode of action remains unclear. Here, we showed that baicalein conferred cardioprotective effect against oxidative stress-induced cell injury in H9c2 cells and human embryonic stem cells-derived cardiomyocytes. Immunoprecipitation with anti-NF-E2-related factor 2 (Nrf2) antibody in baicalein-treated cells demonstrated that baicalein effectively disrupted the association between Nrf2 and Kelch-like epichlorohydrin-associated protein 1 (Keap1). In addition, the unbounded Nrf2 translocated from cytoplasm to nucleus and increased Nrf2/heme oxygenase-1 (HO-1) content in a time-dependent manner. Moreover, antioxidant response element transcriptional activity was enhanced by baicalein treatment, and the Nrf2 siRNA transfection could block the cytoprotective effect of baicalein. Taken together, these results demonstrate that baicalein protected cardiomyocytes against oxidative stress-induced cell injury through the Nrf2/Keap1 pathway.
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Bai Y, Zhang Q, Jia P, Yang L, Sun Y, Nan Y, Wang S, Meng X, Wu Y, Qin F, Sun Z, Gao X, Liu P, Luo K, Zhang Y, Zhao X, Xiao C, Liao S, Liu J, Wang C, Fang J, Wang X, Wang J, Gao R, An X, Zhang X, Zheng X. Improved Process for Pilot-Scale Synthesis of Danshensu ((±)-DSS) and Its Enantiomer Derivatives. Org Process Res Dev 2013. [DOI: 10.1021/op4002593] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yajun Bai
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Qunzheng Zhang
- College
of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an 710065, China
| | - Pu Jia
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Lingjian Yang
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Yuhong Sun
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Yefei Nan
- College
of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an 710065, China
| | - Shixiang Wang
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Xue Meng
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Yizhen Wu
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Fanggang Qin
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Zhe Sun
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Xiaokang Gao
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Pei Liu
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Kai Luo
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry & Material Science, Northwest University, Xi’an, 710069, China
| | - Yajun Zhang
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Xinfeng Zhao
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Chaoni Xiao
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Sha Liao
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Jianli Liu
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Cuiling Wang
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Jiacheng Fang
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Xiaoxiao Wang
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Jing Wang
- Shaanxi Institute of Zoology, Xi’an, 710032, China
| | - Rong Gao
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Xuexia An
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Xunli Zhang
- Faculty
of Engineering and the Environment, University of Southampton, Southampton SO17 1BJ, U.K
| | - Xiaohui Zheng
- Key
Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Xi’an 710069, China
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Otake T, Yarita T, Aoyagi Y, Kuroda Y, Numata M, Iwata H, Mizukoshi K, Nakamura M, Watai M, Mitsuda H, Fujikawa T, Ota H. Development of green onion and cabbage certified reference materials for quantification of organophosphorus and pyrethroid pesticides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:8568-8574. [PMID: 21774469 DOI: 10.1021/jf201820u] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Green onion and cabbage certified reference materials for the analysis of pesticide residues were issued by the National Metrology Institute of Japan, part of the National Institute of Advanced Industrial Science and Technology. Green onion and cabbage samples were grown so as to contain several kinds of organophosphorus and pyrethroid pesticides, and those were collected from a field in the Kochi Prefecture in Japan. The certification was carried out by using multiple analytical methods to ensure the reliability of analytical results; the values of target pesticides (diazinon, fenitrothion, cypermethrin, etofenprox, and permethrin for green onion and chlorpyrifos, fenitrothion, and permethrin for cabbage) were obtained by isotope dilution mass spectrometry. Certified values of target pesticides were 0.96-13.9 and 2.41-6.9 mg/kg for green onion and cabbage, respectively. These are the first green onion and cabbage powder certified reference materials in which organophosphorus and pyrethroid pesticides are determined.
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Affiliation(s)
- Takamitsu Otake
- National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan.
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Uddin R, Iqbal S, Khan MF, Parveen Z, Ahmed M, Abbas M. Determination of pesticide residues in rice grain by solvent extraction, column cleanup, and gas chromatography-electron capture detection. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2011; 86:83-89. [PMID: 21181114 DOI: 10.1007/s00128-010-0178-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Accepted: 12/07/2010] [Indexed: 05/30/2023]
Abstract
A simple, easy, cheap and efficient analytical method for determination of multiple pesticide residues including organochlorine, organophosphorus, synthetic pyrethroids and herbicides in rice grain by capillary gas chromatography is developed. The quantification of residues was done by capillary gas chromatography with a μ-ECD detector and a HP-5MS capillary column. Known amounts of a mixture of pesticides were added to grain prior to extraction, cleanup and GC-determination. Recoveries were checked at two fortification levels; 0.1 and 0.5 μg/g. Qualitative and quantitative analysis were carried out based on the retention time and peak area basis. The results show that the average recovery of the analytical method for the fortified rice samples was in the range of 74%-111% and %RSD in the range of 2.41-12.42. The analytical method was used to analyze commercial rice grain samples.
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Affiliation(s)
- Riaz Uddin
- Grain Quality Testing Laboratory, Southern Zone Agricultural Research Centre, Pakistan Agricultural Research Council, Karachi University Campus, Karachi 75270, Pakistan.
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Abstract
Traditional Chinese medicines (TCMs) are getting more and more popular nowadays in the whole world for improving health condition of human beings as well as preventing and healing diseases. TCM is a multi-component system with components mostly unknown, and only a few compounds are responsible for the pharmaceutical and/or toxic effects. The large numbers of other components in the TCM make the screening and analysis of the bioactive components extremely difficult. So, separation and analysis of the desired chemical components in TCM are very important subjects for modernization research of TCM. Thus, many novel separation techniques with significant advantages over conventional methods were introduced and applied to separation and analysis of the chemical constituents in TCM. This review presents just a brief outline of the applications of different separation methods for the isolation and analysis of TCM constituents.
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Affiliation(s)
- Shao Liu
- College of Chemistry and Chemical Engineering, Research Center of Modernization of Chinese Medicines, Central South University, Changsha, PR China
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Wang X, Lv H, Sun H, Liu L, Sun W, Cao H. Development of a rapid and validated method for investigating the metabolism of scoparone in rat using ultra-performance liquid chromatography/electrospray ionization quadruple time-of-flight mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2007; 21:3883-90. [PMID: 17979104 DOI: 10.1002/rcm.3296] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Scoparone (6,7-dimethoxycoumarin) is known to have a wide range of pharmacological properties. In this study, a rapid and validated ultra-performance liquid chromatography/electrospray ionization quadruple time-of-flight mass spectrometry (UPLC/ESI-QTof-MS) method was developed to investigate the metabolism of scoparone in rat for the first time. The new method reduced the sample handling and analytical time by three- to six-fold, and the detection limit by five- to 1000-fold, compared to published methods. Far more metabolites were detected and identified compared to published data, which were preliminarily identified as scopoletin, isoscopoletin, isofraxidin, and fraxidin, respectively, when subjected to tandem mass spectrometry analyses. It is found that the metabolic trajectory of scoparone in rat focused on phase I metabolism which is obviously different from published results, and revealed a wide range of pharmacological properties of scoparone partly attributed to the bioactivities of its metabolites.
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Affiliation(s)
- Xijun Wang
- Department of Pharmacognosy, Heilongjiang University of Chinese Medicine, 24 Heping Road, Harbin 150040, China.
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