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Sarmah D, Sengupta R. A Review on the Role of Phytoconstituents Chrysin on the Protective Effect on Liver and Kidney. Curr Drug Discov Technol 2024; 21:e251023222716. [PMID: 37921185 DOI: 10.2174/0115701638242317231018144944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 07/07/2023] [Accepted: 07/18/2023] [Indexed: 11/04/2023]
Abstract
BACKGROUND The chance of contracting significant diseases increases due to an unhealthy and contemporary lifestyle. Chrysin is a flavonoid of the flavone class in numerous plants, including Passiflora and Pelargonium. Chrysin has long been used to treat a variety of illnesses. Chrysin, an essential flavonoid, has many pharmacological actions, including anticancer, antiviral, anti-inflammatory, anti-arthritic, depressive, hypolipidemic, hepatoprotective, and nephroprotective activity. PURPOSE This explorative review was commenced to provide a holistic review of flavonoids confirming that Chrysin has a therapeutic potential on the liver and kidney and reduces the hepatotoxicity and nephrotoxicity induced by diverse toxicants, which can be helpful for the toxicologists, pharmacologists, and chemists to develop new safer pharmaceutical products with chrysin and other toxicants. STUDY DESIGN The most relevant studies that were well-explained and fit the chosen topic best were picked. The achieved information was analyzed to determine the outcome by screening sources by title, abstract, and whole work. Between themselves, the writers decided on the studies to be considered. The necessary details were systematically organized into titles and subtitles and compressively discussed. METHOD The information presented in this review is obtained using targeted searches on several online platforms, including Google Scholar, Scifinder, PubMed, Science Direct, ACS publications, and Wiley Online Library. The works were chosen based on the inclusion criteria agreed upon by all authors. RESULTS Chrysin is a promising bioactive flavonoid with significant health benefits, and its synthetic replacements are being utilized as pharmaceuticals to treat various diseases. Findings revealed that Chrysin exhibits hepatoprotective actions against several hepatotoxicants like 2,3,7,8 tetrachlorodibenzo- p-dioxin, carbon tetrachloride (CCl4), cisplatin, and others by lowering the levels of liver toxicity biomarkers and enhancing antioxidant levels. Additionally, chrysin has potential nephroprotective properties against various nephrotoxicants, like Cisplatin, Doxorubicin, Paracetamol, Gentamicin, Streptazosin, and others by dropping kidney toxicity marker levels, reducing oxidative stress, and improving the antioxidant level. CONCLUSION According to this revised study, chrysin is a promising phytoconstituent that can be utilized as an alternate treatment for various medications that cause hepatotoxicity and nephrotoxicity. With active chrysin, several dosage forms targeting the liver and kidneys can be formulated.
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Affiliation(s)
- Debika Sarmah
- Department of Pharmacology, Girijananda Chowdhury Institute of Pharmaceutical Science, Hatkhowapara Azara, Guwahati, 17, India
| | - Rupa Sengupta
- Department of Pharmacognosy, Girijananda Chowdhury Institute of Pharmaceutical Science, Hatkhowapara Azara, Guwahati, 17, India
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2
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Borges RS, Aguiar CPO, Oliveira NLL, Amaral INA, Vale JKL, Chaves Neto AMJ, Queiroz AN, da Silva ABF. Antioxidant capacity of simplified oxygen heterocycles and proposed derivatives by theoretical calculations. J Mol Model 2023; 29:232. [PMID: 37407749 DOI: 10.1007/s00894-023-05602-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 05/22/2023] [Indexed: 07/07/2023]
Abstract
CONTEXT Some structural properties can be involved in the antioxidant capacity of several polyphenol derivatives, among them their simplified structures. This study examines the contribution of simplified structure for the antioxidant capacity of some natural and synthetic antioxidants. The resonance structures were related to the π-type electron system of carbon-carbon double bonds between both phenyl rings. Trans-resveratrol, phenyl-benzofuran, phenyl-indenone, and benzylidene-benzofuranone are the best basic antioxidant templates among the simplified derivatives studied here. Additionally, the stilbene moiety was found on the molecules with the best antioxidant capacity. Furthermore, our investigation suggests that these compounds can be used as antioxidant scaffold for designing and developing of new promising derivatives. METHODS To investigate the structure-antioxidant capacity for sixteen simplified natural and proposed derivatives we have employed density functional theory and used Gaussian 09. Our DFT calculations were performed using the B3LYP functional and the 6-31+G(d,p) basis set. All electron transfer mechanisms were investigated by using values of HOMO, ionization potential, energy affinity, stabilization energies, and spin density distributions.
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Affiliation(s)
- Rosivaldo S Borges
- Núcleo de Estudos e Seleção de Compostos Bioativos, Instituto de Ciências da Saúde, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil.
- Instituto de Química de São Carlos, Universidade de São Paulo, CP 780, São Carlos, SP, 13560-970, Brazil.
| | - Christiane P O Aguiar
- Núcleo de Estudos e Seleção de Compostos Bioativos, Instituto de Ciências da Saúde, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil
| | - Nicole L L Oliveira
- Núcleo de Estudos e Seleção de Compostos Bioativos, Instituto de Ciências da Saúde, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil
| | - Israel N A Amaral
- Núcleo de Estudos e Seleção de Compostos Bioativos, Instituto de Ciências da Saúde, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil
| | - Joyce K L Vale
- Núcleo de Estudos e Seleção de Compostos Bioativos, Instituto de Ciências da Saúde, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil
| | - Antonio M J Chaves Neto
- Faculdade de Física, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil
| | - Auriekson N Queiroz
- Núcleo de Estudos e Seleção de Compostos Bioativos, Instituto de Ciências da Saúde, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil
| | - Albérico B F da Silva
- Instituto de Química de São Carlos, Universidade de São Paulo, CP 780, São Carlos, SP, 13560-970, Brazil
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Li X, Li S, Wang J, Chen G, Tao X, Xu S. Metabolomic Analysis Reveals Domestication-Driven Reshaping of Polyphenolic Antioxidants in Soybean Seeds. Antioxidants (Basel) 2023; 12:antiox12040912. [PMID: 37107287 PMCID: PMC10135580 DOI: 10.3390/antiox12040912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 03/30/2023] [Accepted: 03/30/2023] [Indexed: 04/29/2023] Open
Abstract
Crop domestication has resulted in nutrient losses, so evaluating the reshaping of phytonutrients is crucial for improving nutrition. Soybean is an ideal model due to its abundant phytonutrients and wild relatives. In order to unravel the domestication consequence of phytonutrients, comparative and association analyses of metabolomes and antioxidant activities were performed on seeds of six wild (Glycine soja (Sieb. and Zucc.)) and six cultivated soybeans (Glycine max (L.) Merr.). Through ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS), we observed a greater metabolic diversity in wild soybeans, which also displayed higher antioxidant activities. (-)-Epicatechin, a potent antioxidant, displayed a 1750-fold greater abundance in wild soybeans than in cultivated soybeans. Multiple polyphenols in the catechin biosynthesis pathway were significantly higher in wild soybeans, including phlorizin, taxifolin, quercetin 3-O-galactoside, cyanidin 3-O-glucoside, (+)-catechin, (-)-epiafzelechin, catechin-glucoside, and three proanthocyanidins. They showed significant positive correlations with each other and antioxidant activities, indicating their cooperative contribution to the high antioxidant activities of wild soybeans. Additionally, natural acylation related to functional properties was characterized in a diverse range of polyphenols. Our study reveals the comprehensive reprogramming of polyphenolic antioxidants during domestication, providing valuable insights for metabolism-assisted fortification of crop nutrition.
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Affiliation(s)
- Xuetong Li
- Central Laboratory, State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Sujuan Li
- Central Laboratory, State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Jian Wang
- Central Laboratory, State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Guang Chen
- Central Laboratory, State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Xiaoyuan Tao
- Central Laboratory, State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Shengchun Xu
- Central Laboratory, State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
- Xianghu Laboratory, Hangzhou 311231, China
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4
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Ye M, Fan S, Li X, Yang S, Ji C, Ji F, Zhou B. Four flavonoids from propolis ameliorate free fatty acids-induced non-alcoholic steatohepatitis in HepG2 cells: Involvement of enhanced AMPK activation, mTOR-NF-κBp65 interaction, and PTEN expression. J Funct Foods 2023. [DOI: 10.1016/j.jff.2023.105460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023] Open
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Revisiting the Proposition of Binding Pockets and Bioactive Poses for GSK-3β Allosteric Modulators Addressed to Neurodegenerative Diseases. Int J Mol Sci 2021; 22:ijms22158252. [PMID: 34361017 PMCID: PMC8348340 DOI: 10.3390/ijms22158252] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/14/2021] [Accepted: 05/18/2021] [Indexed: 02/07/2023] Open
Abstract
Glycogen synthase kinase-3 beta (GSK-3β) is an enzyme pertinently linked to neurodegenerative diseases since it is associated with the regulation of key neuropathological features in the central nervous system. Among the different kinds of inhibitors of this kinase, the allosteric ones stand out due to their selective and subtle modulation, lowering the chance of producing side effects. The mechanism of GSK-3β allosteric modulators may be considered still vague in terms of elucidating a well-defined binding pocket and a bioactive pose for them. In this context, we propose to reinvestigate and reinforce such knowledge by the application of an extensive set of in silico methodologies, such as cavity detection, ligand 3D shape analysis and docking (with robust validation of corresponding protocols), and molecular dynamics. The results here obtained were consensually consistent in furnishing new structural data, in particular by providing a solid bioactive pose of one of the most representative GSK-3β allosteric modulators. We further applied this to the prospect for new compounds by ligand-based virtual screening and analyzed the potential of the two obtained virtual hits by quantum chemical calculations. All potential hits achieved will be subsequently tested by in vitro assays in order to validate our approaches as well as to unveil novel chemical entities as GSK-3β allosteric modulators.
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6
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de Souza
Farias SA, da Costa KS, Martins JB. Analysis of Conformational, Structural, Magnetic, and Electronic Properties Related to Antioxidant Activity: Revisiting Flavan, Anthocyanidin, Flavanone, Flavonol, Isoflavone, Flavone, and Flavan-3-ol. ACS OMEGA 2021; 6:8908-8918. [PMID: 33842761 PMCID: PMC8028018 DOI: 10.1021/acsomega.0c06156] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 03/01/2021] [Indexed: 06/03/2023]
Abstract
Understanding the antioxidant activity of flavonoids is important to investigate their biological activities as well as to design novel molecules with low toxicity and high activity. Aromaticity is a chemical property found in cyclic structures that plays an important role in their stability and reactivity, and its investigation can help us to understand the antioxidant activity of some heterocyclic compounds. In the present study, we applied the density functional theory (DFT) to investigate the properties of seven flavonoid structures with well-reported antioxidant activity: flavan, anthocyanidin, flavanone, flavonol, isoflavone, flavone, and flavan-3-ol. Conformational, structural, magnetic, and electronic analyses were performed using nuclear magnetic resonance, ionization potentials, electron affinity, bond dissociation energy, proton affinity, frontier molecular orbitals (highest occupied molecular orbital (HOMO)/lowest unoccupied molecular orbital (LUMO)), and aromaticity through nucleus-independent chemical shifts to analyze these seven flavonoid structures. We revised the influence of hydroxyl groups on the properties of flavonoids and also investigated the influence of the aromaticity of these seven flavonoids on the antioxidant activity.
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Affiliation(s)
- Sergio Antônio de Souza
Farias
- Laboratory
of Molecular Modeling, Institute of Educational Sciences, Federal University of Western Pará, 68040-255 Santarém, Pará, Brazil
| | - Kauê Santana da Costa
- Institute
of Biodiversity, Federal University of Western
Pará, 68040-255 Santarém, Pará, Brazil
| | - João B.
L. Martins
- Laboratory
of Computational Chemistry, Institute of Chemistry, University of Brasilia, 4478 Brasília, Distrito
Federal, Brazil
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Santos KLB, Queiroz AN, Lobato CC, Vale JKL, Santos CBR, Borges RS. A comparative theoretical mechanism on simplified flavonoid derivatives and isoxazolone analogous as Michael system inhibitor. J Mol Model 2021; 27:26. [PMID: 33410998 DOI: 10.1007/s00894-020-04647-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 12/13/2020] [Indexed: 11/29/2022]
Abstract
Flavonoids are a big class of natural product and have a wide range of biological activities. Some of these applications depend on its antioxidant capacity. Nevertheless, another mechanism can be involved by means of alkylation reaction on α,β-unsaturated carbonyl system. This study aimed to evaluate the antioxidant capacity and the chemical reactivity among simplified flavonoid derivatives and isoxazolone analogous as Michael system by using B3LYP functional and 6-311 g(d,p) basis set. Frontier molecular orbital, ionization potential (IP), spin density contributions, and Fukui index explain the antioxidant capacity and reactivity index on isoxazolone and its related derivatives. The best contribution at β-alkene moiety is related to better reactivity of α,β-unsaturated carbonyl group. A decrease in antioxidant capacity is related to an increase in the chemical reactivity index. The frontier molecular orbitals show that aurone is more reactive than isoxazolone. In accordance with Fukui index, isoxazolone can be better inhibitor as Michael system when compared to flavonoid derivatives. Graphical abstract.
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Affiliation(s)
- Kelton L B Santos
- Departamento de Ciências Exatas e Tecnológicas, Universidade Federal do Amapá, Macapá, AP, 68903-419, Brazil. .,Núcleo de Estudos e Seleção de Moléculas Bioativas, Instituto de Ciências da Saúde, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil.
| | - Auriekson N Queiroz
- Núcleo de Estudos e Seleção de Moléculas Bioativas, Instituto de Ciências da Saúde, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil
| | - Cleison C Lobato
- Núcleo de Estudos e Seleção de Moléculas Bioativas, Instituto de Ciências da Saúde, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil.,Campus Binacional, Universidade Federal do Amapá, Oiapoque, AP, 68980-000, Brazil
| | - Joyce K L Vale
- Núcleo de Estudos e Seleção de Moléculas Bioativas, Instituto de Ciências da Saúde, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil
| | - Cleydson B R Santos
- Laboratório de Modelagem e Química Computacional, Departamento de Ciências Biológicas e da Saúde, Universidade Federal do Amapá, Macapá, AP, 68903-419, Brazil
| | - Rosivaldo S Borges
- Núcleo de Estudos e Seleção de Moléculas Bioativas, Instituto de Ciências da Saúde, Universidade Federal do Pará, Belém, PA, 66075-110, Brazil.
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8
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Darkwah WK, Koomson DA, Miwornunyuie N, Nkoom M, Puplampu JB. Review: phytochemistry and medicinal properties of Solanum torvum fruits. ALL LIFE 2020. [DOI: 10.1080/26895293.2020.1817799] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Affiliation(s)
- Williams Kweku Darkwah
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Environmental Engineering Department, College of Environment, Hohai University, Nanjing, People’s Republic of China
- Department of Biochemistry, School of Biological Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Desmond Ato Koomson
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Environmental Engineering Department, College of Environment, Hohai University, Nanjing, People’s Republic of China
- Department of Biochemistry, School of Biological Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Nicholas Miwornunyuie
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Environmental Engineering Department, College of Environment, Hohai University, Nanjing, People’s Republic of China
| | - Matthew Nkoom
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Environmental Engineering Department, College of Environment, Hohai University, Nanjing, People’s Republic of China
| | - Joshua Buer Puplampu
- Department of Biochemistry, School of Biological Sciences, University of Cape Coast, Cape Coast, Ghana
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Fu Y, You Z, Xiao A, Liu L, Zhou W. Electrochemical evaluation of the antioxidant capacity of natural compounds on glassy carbon electrode modified with guanine-, polythionine-, and nitrogen-doped graphene. OPEN CHEM 2020. [DOI: 10.1515/chem-2020-0157] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
AbstractAn electrochemical sensor based on guanine-, polythionine-, and nitrogen-doped graphene modified glassy carbon electrode (G/PTH/NG/GCE) was fabricated and applied for antioxidant capacity evaluation of natural compounds and complexes in electrochemical method since natural sources of active compounds exhibited various antioxidant activities. When the antioxidants existed in the system, the generated hydroxyl radicals were scavenged and the damage to guanine immobilized on the electrode was reduced less resulting in the oxidation peak current increased in square wave voltammetry. After the modifications of polythionine- and nitrogen-doped graphene, the oxidation peak current was improved. The effects of pH, incubation time, and concentrations of guanine and Fe2+ ions on the performances of the electrode were investigated and optimized. The G/PTH/NG/GCE showed good linearity, reproducibility, and storage stability for antioxidant capacity evaluation of ascorbic acid at the optimum conditions. The antioxidant capacities of three flavonoids and three plant extracts were measured using the G/PTH/NG/GCE and DPPH methods. Myricetin showed the highest antioxidant capacity in both electrochemical and DPPH methods. The proposed G/PTH/NG/GCE exhibited easy fabrication procedure, rapid detection time, and low cost for the detection of antioxidant activity for various kinds of samples.
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Affiliation(s)
- Yafen Fu
- Characteristic Fruit and Vegetable Research Office, Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, People's Republic of China
| | - Zongyi You
- Characteristic Fruit and Vegetable Research Office, Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, People's Republic of China
| | - Aiping Xiao
- Characteristic Fruit and Vegetable Research Office, Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, People's Republic of China
| | - Liangliang Liu
- Characteristic Fruit and Vegetable Research Office, Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, 410205, People's Republic of China
| | - Weien Zhou
- Hunan Fangsheng Pharmaceutical Co., Ltd, Changsha, 410205, People's Republic of China
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Rolt A, Cox LS. Structural basis of the anti-ageing effects of polyphenolics: mitigation of oxidative stress. BMC Chem 2020; 14:50. [PMID: 32793891 PMCID: PMC7417423 DOI: 10.1186/s13065-020-00696-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 07/10/2020] [Indexed: 01/10/2023] Open
Abstract
Ageing, and particularly the onset of age-related diseases, is associated with tissue dysfunction and macromolecular damage, some of which can be attributed to accumulation of oxidative damage. Polyphenolic natural products such as stilbenoids, flavonoids and chalcones have been shown to be effective at ameliorating several age-related phenotypes, including oxidative stress, inflammation, impaired proteostasis and cellular senescence, both in vitro and in vivo. Here we aim to identify the structural basis underlying the pharmacology of polyphenols towards ROS and related biochemical pathways involved in age-related disease. We compile and describe SAR trends across different polyphenol chemotypes including stilbenoids, flavonoids and chalcones, review their different molecular targets and indications, and identify common structural ground between chemotypes and mechanisms of action. In particular, we focus on the structural requirements for the direct scavenging of reactive oxygen/nitrogen species such as radicals as well as coordination of a broader antioxidant response. We further suggest that it is important to consider multiple (rather than single) biological activities when identifying and developing new medicinal chemistry entities with utility in modulating complex biological properties such as cell ageing.
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Affiliation(s)
- Adam Rolt
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU UK
| | - Lynne S Cox
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU UK
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Abuelizz HA, Anouar EH, Al-Shakliah NS, Marzouk M, Al-Salahi R. Structural cytotoxicity relationship of 2-phenoxy(thiomethyl)pyridotriazolopyrimidines: Quantum chemical calculations and statistical analysis. OPEN CHEM 2020. [DOI: 10.1515/chem-2020-0138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractPreviously, a series of pyridotriazolopyrimidines (1–6) were synthesized and fully described. The target compounds (1–6) were evaluated for their cytotoxicity against MCF-7, HepG2, WRL 68, and A549 (breast adenocarcinoma, hepatocellular carcinoma, embryonic liver, and pulmonary adenocarcinoma, respectively) cell lines using MTT assay. The tested compounds demonstrated cytotoxicity, but no significant activity. To elucidate the structure–cytotoxicity relation of the prepared pyridotriazolopyrimidines, several chemical descriptors were determined, including electronic, steric, and hydrophobic descriptors. These chemical descriptors were calculated in the polarizable continuum model (water as solvent) using density functional theory calculations at B3LYP/6-31+G(d,p). By employing simple linear regression (SLR) and multiple linear regression (MLR) analyses, the impact of the selected descriptors was assessed statistically. The obtained results clearly reveal that the cytotoxicity of pyridotriazolopyrimidines depends on their (i) basic skeleton and (ii) the type of the tested cell. Interestingly, SLR and MLR analyses show that the impact of the selected descriptors is strongly related to the tested cells and basic skeleton of the tested compounds. For instance, the cytotoxicity of subclasses 2a and 2c–2f against A459 shows strong correlation with ionization potential, hardness (η), and hydrophobicity (log P) with a correlation coefficient of 99.86% and a standard deviation of 0.53.
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Affiliation(s)
- Hatem A. Abuelizz
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia
| | - El Hassane Anouar
- Department of Chemistry, College of Science and Humanities in Al-Kharj, Prince Sattam bin Abdulaziz University, Al-kharj 11942, Saudi Arabia
| | - Nasser S. Al-Shakliah
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia
| | - Mohamed Marzouk
- Chemistry of Natural Products Group, Center of Excellence for Advanced Sciences, National Research Centre, 33 El-Bohouth St. (Former El-Tahrir St.), Dokki 12622, Giza, Egypt
| | - Rashad Al-Salahi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia
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Hernández-Bolio GI, Ruiz-Vargas JA, Peña-Rodríguez LM. Natural Products from the Yucatecan Flora: Structural Diversity and Biological Activity. JOURNAL OF NATURAL PRODUCTS 2019; 82:647-656. [PMID: 30855145 DOI: 10.1021/acs.jnatprod.8b00959] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The Yucatan Peninsula possesses a unique climate, geology, landscape, and biota that includes a distinct flora of over 2300 species; of these, close to 800 plants are used in what is known as Mayan traditional medicine, and about 170 are listed as native or endemic. Even though the flora of the Yucatan peninsula has been widely studied by naturalists and biologists, to date, phytochemical and pharmacological knowledge of most of the plants, including the medicinal plants, is limited. Presently, phytochemical studies carried out on plants from the Yucatecan flora have resulted in the identification of a wide variety of natural products that include flavonoids, terpenoids, polyketides, and phenolics with cytotoxic, antiprotozoal, antibacterial, anti-inflammatory, analgesic, antioxidant, and antifungal activities. This review describes the main findings in over 20 years (1992 to 2018) of exploring the natural product diversity of the Yucatecan flora.
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Affiliation(s)
- Gloria I Hernández-Bolio
- Departamento de Recursos del Mar , Centro de Investigaciones y Estudios Avanzados del Instituto Politécnico Nacional - Unidad Mérida , Mérida , México
| | - Javier A Ruiz-Vargas
- Laboratorio de Química Orgánica, Unidad de Biotecnología , Centro de Investigación Científica de Yucatán , Mérida , México
| | - Luis M Peña-Rodríguez
- Laboratorio de Química Orgánica, Unidad de Biotecnología , Centro de Investigación Científica de Yucatán , Mérida , México
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Li X. Comparative Study of 1,1‐Diphenyl‐2‐picryl‐hydrazyl Radical (DPPH•) Scavenging Capacity of the Antioxidant Xanthones Family. ChemistrySelect 2018. [DOI: 10.1002/slct.201803362] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Xican Li
- School of Chinese Herbal MedicineGuangzhou University of Chinese MedicineGuangzhou Higher Education Mega Centre, Guangzhou China
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14
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A Null B-Ring Improves the Antioxidant Levels of Flavonol: A Comparative Study between Galangin and 3,5,7-Trihydroxychromone. Molecules 2018; 23:molecules23123083. [PMID: 30486289 PMCID: PMC6321095 DOI: 10.3390/molecules23123083] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 11/22/2018] [Accepted: 11/23/2018] [Indexed: 12/21/2022] Open
Abstract
To clarify the role of the B-ring in antioxidant flavonols, we performed a comparative study between galangin with a null B-ring and 3,5,7-trihydroxychromone without a B-ring using five spectrophotometric assays, namely, •O₂--scavenging, 1,1-diphenyl-2-picrylhydrazyl radical (DPPH•)-scavenging, 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide radical-scavenging, 2,2'-azino-bis(3-ethylbenzo-thiazoline-6-sulfonic acid) radical-scavenging, and Fe3+-reducing activity. The DPPH•-scavenging reaction products of these assays were further analyzed by ultra-performance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight tandem mass spectrometry (UPLC-ESI-Q-TOF-MS/MS) technology. In the five spectrophotometric assays, galangin and 3,5,7-trihydroxychromone dose-dependently increased their radical-scavenging (or Fe3+-reducing) percentages. However, galangin always gave lower IC50 values than those of 3,5,7-trihydroxychromone. In the UPLC-ESI-Q-TOF-MS/MS analysis, galangin yielded galangin-DPPH adduct MS peaks (m/z 662, 434, 301, 227,196, and 151) and galangin-galangin dimer MS peaks (m/z 538, 385, 268, 239, 211, 195, and 151). 3,5,7-Trihydroxychromone, however, only generated m/z 3,5,7-trihydroxychromone-DPPH adduct MS peaks (m/z 586, 539, 227, 196, and 136). In conclusion, both galangin and 3,5,7-trihydroxychromone could similarly undergo multiple antioxidant pathways, including redox-dependent pathways (such as electron transfer (ET) and ET plus proton transfer (PT)) and a non-redox-dependent radical adduct formation (RAF) pathway; thus, the null B-ring could hardly change their antioxidant pathways. However, it did improve their antioxidant levels in these pathways. Such improvement of the B-ring toward an antioxidant flavonol is associated with its π-π conjugation, which can provide more resonance forms and bonding sites.
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DFT and canonical ensemble investigations of gasoline additives at the gas phase: ETBE, MTBE, DIPE, ethanol and methanol. Theor Chem Acc 2018. [DOI: 10.1007/s00214-018-2319-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Li X, Jiang Q, Chen B, Luo X, Chen D. Structure-Activity Relationship and Prediction of the Electron-Transfer Potential of the Xanthones Series. ChemistryOpen 2018; 7:730-736. [PMID: 30258745 PMCID: PMC6148407 DOI: 10.1002/open.201800108] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Indexed: 01/19/2023] Open
Abstract
The structure-activity relationships of 31 xanthones were analyzed by using the ferric reducing antioxidant power (FRAP) assay to determine their electron-transfer (ET) potential. It was proven that the ET potential of xanthones was dominated by four moieties (i.e. hydroquinone moiety, 5,6-catechol moiety, 6,7-catechol moiety, and 7,8-catechol moiety) and was only slightly affected by other structural features, including a single phenolic OH group, the resorcinol moiety, the transannular dihydroxy moiety, a methoxy group, a sugar residue, an isoprenyl group, a cyclized isoprenyl group, and an isopentanol group. The results could be used to predict the ET potentials of other antioxidant xanthones.
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Affiliation(s)
- Xican Li
- School of Chinese Herbal MedicineGuangzhou University of Chinese MedicineWaihuan East Road No. 232, Guangzhou Higher Education Mega CenterGuangzhou510006China
- Innovative Research & Development Laboratory of TCMGuangzhou University of Chinese MedicineGuangzhou510006China
| | - Qian Jiang
- School of Chinese Herbal MedicineGuangzhou University of Chinese MedicineWaihuan East Road No. 232, Guangzhou Higher Education Mega CenterGuangzhou510006China
- Innovative Research & Development Laboratory of TCMGuangzhou University of Chinese MedicineGuangzhou510006China
| | - Ban Chen
- School of Chinese Herbal MedicineGuangzhou University of Chinese MedicineWaihuan East Road No. 232, Guangzhou Higher Education Mega CenterGuangzhou510006China
- Innovative Research & Development Laboratory of TCMGuangzhou University of Chinese MedicineGuangzhou510006China
| | - Xiaoling Luo
- School of Chinese Herbal MedicineGuangzhou University of Chinese MedicineWaihuan East Road No. 232, Guangzhou Higher Education Mega CenterGuangzhou510006China
| | - Dongfeng Chen
- School of Basic Medical ScienceGuangzhou University of Chinese MedicineGuangzhou510006China
- The Research Center of Basic Integrative MedicineGuangzhou University of Chinese MedicineGuangzhou510006China
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Alshammari MB, Geesi MH, Anouar EH, Al-Salahi R, Alharthi AI, Elnakady Y, Marzouk M. Quantum Chemical Calculations and Statistical Analysis: Structural Cytotoxicity Relationships of some Synthesized 2-thiophen-naphtho(benzo)oxazinone Derivatives. Cell Biochem Biophys 2018; 76:377-389. [PMID: 30062659 DOI: 10.1007/s12013-018-0848-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Accepted: 06/28/2018] [Indexed: 10/28/2022]
Abstract
Twenty-two 2-thiophen-naphtho(benzo)oxazinone derivatives are prepared using 3-amino-2-naphthoic and 5-nitroanthranilic acids as building blocks. The target compounds (1-22) were evaluated quantitatively for their cytotoxic effects in vitro against three cancer cell lines, including the lung A549, the hepatocyte HepG2, and the breast MCF-7 carcinoma cells. Compounds 1, 12, 14, and 21 were found to exhibit remarkable cytotoxicity against the tested cancer cell lines. Compound 21 has shown the highest activity against A549 and MCF-7 (IC50: 9.8 & 3.6 µg mL-1) whereas 1 (IC50: 5.9 µg mL-1) and 5 (3.6 µg mL-1) were the most active against HepG2. To elucidate the structure-cytotoxicity relationships of the synthesized compounds, a number of their chemical descriptors are determined including electronic, steric and hydrophobicity descriptors. The electronic properties were calculated through density functional theory (DFT) calculations at the B3LYP/6-31 + G(d,p). The impact of the chosen descriptors is evaluated statistically through simple and multiple linear regression analyses (SLR and MLR). SLR analyses reveal that the impact of each descriptor on the cell lines are relatively weak except for MCF-7, where hardness and softness show moderate correlations with correlation coefficients higher than 60%. The correlations were improved by considering MLR analyses (R2 ≥ 90%), which showed that the cytotoxicity of synthesized compounds is correlated with their combined descriptors hardness, softness, electrophiliciy and hydrophobicity (LogP).
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Affiliation(s)
- Mohammed B Alshammari
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University, P.O. Box 83, Al kharj, 11942, Saudi Arabia
| | - Mohammed H Geesi
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University, P.O. Box 83, Al kharj, 11942, Saudi Arabia
| | - El Hassane Anouar
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University, P.O. Box 83, Al kharj, 11942, Saudi Arabia
| | - Rashad Al-Salahi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh, 11451, Saudi Arabia
| | - Abdulrahman I Alharthi
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University, P.O. Box 83, Al kharj, 11942, Saudi Arabia
| | - Yasser Elnakady
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Mohamed Marzouk
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University, P.O. Box 83, Al kharj, 11942, Saudi Arabia. .,Chemistry of Natural Products Group, Center of Excellence for Advanced Sciences, National Research Center, Dokki, Cairo, 12622, Egypt.
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An Antioxidant Potential, Quantum-Chemical and Molecular Docking Study of the Major Chemical Constituents Present in the Leaves of Curatella americana Linn. Pharmaceuticals (Basel) 2018; 11:ph11030072. [PMID: 30036950 PMCID: PMC6161303 DOI: 10.3390/ph11030072] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Revised: 07/09/2018] [Accepted: 07/12/2018] [Indexed: 12/13/2022] Open
Abstract
Reactive oxygen species (ROS) are continuously generated in the normal biological systems, primarily by enzymes as xanthine oxidase (XO). The inappropriate scavenging or inhibition of ROS has been considered to be linked with aging, inflammatory disorders, and chronic diseases. Therefore, many plants and their products have been investigated as natural antioxidants for their potential use in preventive medicine. The leaves and bark extracts of Curatella americana Linn. were described in scientific research as anti-inflammatory, vasodilator, anti-ulcerogenic, and hypolipidemic effects. So, the aim of this study was to evaluate the antioxidant potentials of leaf hydroalcoholic extract from C. americana (HECA) through the scavenging DPPH assay and their main chemical constituents, evaluated by the following quantum chemical approaches (DFT B3LYP/6-31G**): Maps of Molecular Electrostatic Potential (MEP), Frontier Orbital’s (HOMO and LUMO) followed by multivariate analysis and molecular docking simulations with the xanthine oxidase enzyme. The hydroalcoholic extract showed significant antioxidant activity by free radical scavenging probably due to the great presence of flavonoids, which were grouped in the PCA and HCA analysis with the standard gallic acid. In the molecular docking study, the compounds studied presented the binding free energy (ΔG) values close each other, due to the similar interactions with amino acids residues at the activity site. The descriptors Gap and softness were important to characterize the molecules with antioxidant potential by capturing oxygen radicals.
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Li X. 2-Phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl 3-Oxide (PTIO •) Radical Scavenging: A New and Simple Antioxidant Assay In Vitro. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:6288-6297. [PMID: 28689421 DOI: 10.1021/acs.jafc.7b02247] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Current in vitro antioxidant assays have several limitations, which frequently cause inconsistent results. The study develops a new antioxidant assay using the 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl 3-oxide radical (PTIO•). After the investigation of various factors, the experimental protocol was briefly recommended as follows: PTIO• and the sample solution were added to phosphate buffer (pH 7.4, 50 mM), incubated at 37 °C for 2 h, and then spectrophotometrically measured at 557 nm. The validation test based on 20 pure compounds and 30 lyophilized aqueous extracts suggested that PTIO• scavenging had a good linear relationship, stability, and reproducibility. In the ultra-performance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight tandem mass spectrometry analysis, PTIO• was observed to give m/z 234 when encountering l-ascorbic acid. As an antioxidant assay, PTIO• scavenging possesses four advantages, i.e., oxygen-centered radical, physiological aqueous solution, simple and direct measurement, and less interference from the tested sample. It can also satisfactorily analyze the antioxidant structure-activity relationship. PTIO• scavenging has no stereospecificity and is at least involved in H+ transfer.
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Affiliation(s)
- Xican Li
- School of Chinese Herbal Medicine and Innovative Research and Development Laboratory of TCM, Guangzhou University of Chinese Medicine , 232 Waihuan East Road, Guangzhou Higher Education Mega Center, Panyu District, Guangzhou, Guangdong 510006, People's Republic of China
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Le Person A, Moissette A, Hureau M, Cornard JP, Moncomble A, Kokaislova A, Falantin C. Sorption of 3-hydroxyflavone within channel type zeolites: the effect of confinement on copper(ii) complexation. Phys Chem Chem Phys 2016; 18:26107-26116. [PMID: 27711415 DOI: 10.1039/c6cp03839e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The confinement effect on the complexation process of Cu(ii) by 3-hydroxyflavone (3HF) was investigated by studying 3HF incorporation in channel-type copper-containing ZSM-5 and mordenite (MOR) zeolites characterized by different pore diameters. Complementary electronic and vibrational spectroscopy techniques point out two distinct behaviors upon 3HF sorption and subsequent complexation depending on the channel diameter in CuZSM-5 and CuMOR. To determine the influence of the internal environment on the interaction between the copper cation and the guest molecule, and to predict the structure of the complexes formed within the narrow-pore ZSM-5 and in the larger pore mordenite, the vibrational spectra of the complexes were calculated using quantum chemical calculations at the DFT level. From the calculations, it is derived that the Cu(3HF)+ chelate is formed in CuMOR indicating a weak interaction with the pore walls. In contrast, due to high confinement in CuZSM-5, interactions between copper cations and the narrower pore walls are assumed to take place in addition to 3HF metal complexation. To emphasize the fact that zeolites act as a solid solvent, 3HF complexation was also investigated in methanol solution. In such liquid media, a stable complex Cu(3HF)2 of 1 : 2 stoichiometry resulting in a double chelation with the metal cation was found to coexist with a minor species [Cu(3HF)(MeOH)2]+ of 1 : 1 stoichiometry. These two complexes show striking analogy with those observed in CuZSM-5 and CuMOR, respectively. Thus, it appears clearly that zeolites can constitute an ideal tool to control and orientate molecular reactivity for the guest in the isolated state.
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Affiliation(s)
- A Le Person
- LASIR, UMR-CNRS 8516, Université de Lille, Sciences et Technologies, Bât. C5, Villeneuve d'Ascq cedex, France.
| | - A Moissette
- LASIR, UMR-CNRS 8516, Université de Lille, Sciences et Technologies, Bât. C5, Villeneuve d'Ascq cedex, France.
| | - M Hureau
- LASIR, UMR-CNRS 8516, Université de Lille, Sciences et Technologies, Bât. C5, Villeneuve d'Ascq cedex, France.
| | - J P Cornard
- LASIR, UMR-CNRS 8516, Université de Lille, Sciences et Technologies, Bât. C5, Villeneuve d'Ascq cedex, France.
| | - A Moncomble
- LASIR, UMR-CNRS 8516, Université de Lille, Sciences et Technologies, Bât. C5, Villeneuve d'Ascq cedex, France.
| | - A Kokaislova
- LASIR, UMR-CNRS 8516, Université de Lille, Sciences et Technologies, Bât. C5, Villeneuve d'Ascq cedex, France. and Department of Analytical Chemistry, Institute of Chemical Technology, Technická 5, 166 28 Praha 6 - Dejvice, Czech Republic
| | - C Falantin
- LASIR, UMR-CNRS 8516, Université de Lille, Sciences et Technologies, Bât. C5, Villeneuve d'Ascq cedex, France.
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Hamdi OAA, Anouar EH, Shilpi JA, Trabolsy ZBKA, Zain SBM, Zakaria NSS, Zulkefeli M, Weber JFF, Malek SNA, Rahman SNSA, Awang K. A Quantum Chemical and Statistical Study of Cytotoxic Activity of Compounds Isolated from Curcuma zedoaria. Int J Mol Sci 2015; 16:9450-68. [PMID: 25923077 PMCID: PMC4463598 DOI: 10.3390/ijms16059450] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 02/10/2015] [Accepted: 02/17/2015] [Indexed: 11/23/2022] Open
Abstract
A series of 21 compounds isolated from Curcuma zedoaria was subjected to cytotoxicity test against MCF7; Ca Ski; PC3 and HT-29 cancer cell lines; and a normal HUVEC cell line. To rationalize the structure-activity relationships of the isolated compounds; a set of electronic; steric and hydrophobic descriptors were calculated using density functional theory (DFT) method. Statistical analyses were carried out using simple and multiple linear regressions (SLR; MLR); principal component analysis (PCA); and hierarchical cluster analysis (HCA). SLR analyses showed that the cytotoxicity of the isolated compounds against a given cell line depend on certain descriptors; and the corresponding correlation coefficients (R2) vary from 0%-55%. MLR results revealed that the best models can be achieved with a limited number of specific descriptors applicable for compounds having a similar basic skeleton. Based on PCA; HCA and MLR analyses; active compounds were classified into subgroups; which was in agreement with the cell based cytotoxicity assay.
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Affiliation(s)
- Omer Abdalla Ahmed Hamdi
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - El Hassane Anouar
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
- Atta-ur-Rahman Institute for Natural Product Discovery, Universiti Teknologi MARA Kampus Puncak Alam, Bandar Puncak Alam 42300, Malaysia.
| | - Jamil A Shilpi
- Centre for Natural Products and Drug Discovery (CENAR), University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Zuhra Bashir Khalifa Al Trabolsy
- Atta-ur-Rahman Institute for Natural Product Discovery, Universiti Teknologi MARA Kampus Puncak Alam, Bandar Puncak Alam 42300, Malaysia.
| | - Sharifuddin Bin Md Zain
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Nur Shahidatul Shida Zakaria
- Atta-ur-Rahman Institute for Natural Product Discovery, Universiti Teknologi MARA Kampus Puncak Alam, Bandar Puncak Alam 42300, Malaysia.
| | - Mohd Zulkefeli
- Atta-ur-Rahman Institute for Natural Product Discovery, Universiti Teknologi MARA Kampus Puncak Alam, Bandar Puncak Alam 42300, Malaysia.
| | - Jean-Frédéric F Weber
- Atta-ur-Rahman Institute for Natural Product Discovery, Universiti Teknologi MARA Kampus Puncak Alam, Bandar Puncak Alam 42300, Malaysia.
| | - Sri Nurestri A Malek
- Institue of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | | | - Khalijah Awang
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
- Centre for Natural Products and Drug Discovery (CENAR), University of Malaya, Kuala Lumpur 50603, Malaysia.
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Kim JW, Yang H, Cho N, Kim B, Kim YC, Sung SH. Hepatoprotective constituents of Firmiana simplex stem bark against ethanol insult to primary rat hepatocytes. Pharmacogn Mag 2015; 11:55-60. [PMID: 25709211 PMCID: PMC4329633 DOI: 10.4103/0973-1296.149704] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 03/27/2014] [Accepted: 01/21/2015] [Indexed: 12/25/2022] Open
Abstract
Background: Ethanol causes hepatic cellular damage by alterations in biological functions. This study evaluated the hepatoprotective potential of the methanolic extract originating from Firmiana simplex (Sterculiaceae) stem bark against the ethanol-induced hepatotoxicity in rat primary hepatocytes. Materials and Methods: The extract of F. simplex stem bark was successively fractionated into n-hexane, chloroform, ethyl acetate (EtOAc), and n-butanol. Column chromatography with silica gel and sephadex LH-20 was used to isolate the EtOAc fraction. Rat primary hepatocytes were cultured to study the hepatoprotective activity of isolated substances against ethanol-induced toxicity. Intracellular reactive oxygen species (ROS) levels, the antioxidant activities of glutathione reductase (GR) and glutathione peroxidase (GSH-PX) enzymes, and the GSH content were measured to examine the antioxidative property of the isolated compounds. Results: Two flavonoid glycosides, quercitrin (1) and tamarixetin 3-O-rhamnopyranoside (2), were isolated from the active EtOAc fraction. Compound 1 significantly protected rat primary hepatocytes against ethanol-induced oxidative stress by reducing the intracellular ROS level and preserving antioxidative defense systems such as GR, GSH-PX, and total GSH. Conclusion: This is the first report on the hepatoprotective activities of the extract of F. simplex. The EtOAc fraction of F. simplex stem bark and its major constituent quercitrin (1) could function as hepatoprotective agents to attenuate the development of alcoholic liver disease.
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Affiliation(s)
- Jung Wha Kim
- Department of Pharmacy, College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University, Republic of Korea
| | - Heejung Yang
- Department of Pharmacy, College of Pharmacy, Kangwon National University, Republic of Korea
| | - Namki Cho
- Department of Pharmacy, College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University, Republic of Korea
| | - Bitnarae Kim
- Department of Pharmacy, College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University, Republic of Korea
| | - Young Choong Kim
- Department of Pharmacy, College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University, Republic of Korea
| | - Sang Hyun Sung
- Department of Pharmacy, College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University, Republic of Korea
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Understanding the cytotoxicity or cytoprotective effects of biological and synthetic quinone derivatives by redox mechanism. J Mol Model 2014; 20:2541. [DOI: 10.1007/s00894-014-2541-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2014] [Accepted: 11/17/2014] [Indexed: 01/09/2023]
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Abstract
Silybin, a secondary metabolite isolated from the seeds of the blessed milk thistle (Silybum marianum) was discovered as the first member of a new family of natural compounds called flavonolignans in 1959. Over the years it has received the research attention of many organic chemists. This research has resulted in a number of semisynthetic derivatives prepared in an effort to modulate and better target the biological activities of silybin or to improve its physical properties, such as its solubility. A fundamental breakthrough in silybin chemistry was the determination of the absolute configurations of silybin A and silybin B, and the development of methods for their separation. This review covers articles dealing with silybin chemistry and also summarizes all the derivatives prepared.
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Affiliation(s)
- D Biedermann
- Institute of Microbiology AS CR, Centre of Biocatalysis and Biotransformation, Vídeňská 1083, Prague 4, CZ 14220, Czech Republic.
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Veselinović JB, Veselinović AM, Vitnik ŽJ, Vitnik VD, Nikolić GM. Antioxidant properties of selected 4-phenyl hydroxycoumarins: Integrated in vitro and computational studies. Chem Biol Interact 2014; 214:49-56. [DOI: 10.1016/j.cbi.2014.02.010] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 01/17/2014] [Accepted: 02/22/2014] [Indexed: 01/23/2023]
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Anouar EH. A Quantum Chemical and Statistical Study of Phenolic Schiff Bases with Antioxidant Activity against DPPH Free Radical. Antioxidants (Basel) 2014; 3:309-22. [PMID: 26784873 PMCID: PMC4665484 DOI: 10.3390/antiox3020309] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 03/24/2014] [Accepted: 04/10/2014] [Indexed: 11/17/2022] Open
Abstract
Phenolic Schiff bases are known as powerful antioxidants. To select the electronic, 2D and 3D descriptors responsible for the free radical scavenging ability of a series of 30 phenolic Schiff bases, a set of molecular descriptors were calculated by using B3P86 (Becke's three parameter hybrid functional with Perdew 86 correlation functional) combined with 6-31 + G(d,p) basis set (i.e., at the B3P86/6-31 + G(d,p) level of theory). The chemometric methods, simple and multiple linear regressions (SLR and MLR), principal component analysis (PCA) and hierarchical cluster analysis (HCA) were employed to reduce the dimensionality and to investigate the relationship between the calculated descriptors and the antioxidant activity. The results showed that the antioxidant activity mainly depends on the first and second bond dissociation enthalpies of phenolic hydroxyl groups, the dipole moment and the hydrophobicity descriptors. The antioxidant activity is inversely proportional to the main descriptors. The selected descriptors discriminate the Schiff bases into active and inactive antioxidants.
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Affiliation(s)
- El Hassane Anouar
- Atta-ur-Rahman Institute for Natural Products Discovery, Level 9, FF3, Universiti Teknologi MARA, Puncak Alam Campus, Bandar Puncak Alam, Selangor Darul Ehsan 42300, Malaysia.
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Liu X, Zhu L, Tan J, Zhou X, Xiao L, Yang X, Wang B. Glucosidase inhibitory activity and antioxidant activity of flavonoid compound and triterpenoid compound from Agrimonia Pilosa Ledeb. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 14:12. [PMID: 24410924 PMCID: PMC3909377 DOI: 10.1186/1472-6882-14-12] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Accepted: 01/06/2014] [Indexed: 01/12/2023]
Abstract
BACKGROUND In Chinese traditional medicine, Agrimonia pilosa Ledeb (APL) exhibits great effect on treatment of type 2 diabetes mellitus (T2DM), however its mechanism is still unknown. Considering that T2DM are correlated with postprandial hyperglycemia and oxidative stress, we investigated the α-glucosidase inhibitory activity and the antioxidant activity of flavonoid compound (FC) and triterpenoid compound (TC) from APL. METHODS Entire plants of APL were extracted using 95% ethanol and 50% ethanol successively. The resulting extracts were partitioned and isolated by applying liquid chromatography using silica gel column and Sephadex LH 20 column to give FC and TC. The content of total flavonoids in FC and the content of total triterpenoids in TC were determined by using UV spectrophotometry. HPLC analysis was used to identify and quantify the monomeric compound in FC and TC. The α-glucosidase inhibitory activities were determined using the chromogenic method with p-nitrophenyl-α-D-glucopyranoside as substrate. Antioxidant activities were assessed through three kinds of radical scavenging assays (DPPH radical, ABTS radical and hydroxyl radical) & β-carotene-linoleic acid assay. RESULTS The results indicate FC is abundant of quercitrin, and hyperoside, and TC is abundant of 1β, 2β, 3β, 19α-tetrahydroxy-12-en-28-oic acid (265.2 mg/g) and corosolic acid (100.9 mg/g). The FC & the TC have strong α-glucosidase inhibitory activities with IC50 of 8.72 μg/mL and 3.67 μg/mL, respectively. We find that FC show competitive inhibition against α-glucosidase, while the TC exhibits noncompetitive inhibition. Furthermore, The FC exhibits significant radical scavenging activity with the EC50 values of 7.73 μg/mL, 3.64 μg/mL and 5.90 μg/mL on DPPH radical, hydroxyl radical and ABTS radical, respectively. The FC also shows moderate anti-lipid peroxidation activity with the IC50 values of 41.77 μg/mL on inhibiting β-carotene bleaching. CONCLUSION These results imply that the FC and the TC could be responsible for the good clinical effects of APL on T2MD through targeting oxidative stress and postprandial hyperglycaemia. So APL may be good sources of natural antioxidants and α-glucosidase inhibitors exhibiting remarkable potential value for the therapy of T2DM.
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Affiliation(s)
- Xi Liu
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, College of Bioengineering, Chongqing University, No. 174, Shapingba Main Street, Chongqing 400030, China
| | - Liancai Zhu
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, College of Bioengineering, Chongqing University, No. 174, Shapingba Main Street, Chongqing 400030, China
| | - Jun Tan
- School of Biological & Chemical engineering, Chongqing University of Education, Chongqing 400067, China
| | - Xuemei Zhou
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, College of Bioengineering, Chongqing University, No. 174, Shapingba Main Street, Chongqing 400030, China
| | - Ling Xiao
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, College of Bioengineering, Chongqing University, No. 174, Shapingba Main Street, Chongqing 400030, China
| | - Xian Yang
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Bochu Wang
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, College of Bioengineering, Chongqing University, No. 174, Shapingba Main Street, Chongqing 400030, China
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Density functional theory (DFT) study of edaravone derivatives as antioxidants. Int J Mol Sci 2012; 13:7594-7606. [PMID: 22837715 PMCID: PMC3397547 DOI: 10.3390/ijms13067594] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 06/09/2012] [Accepted: 06/11/2012] [Indexed: 11/16/2022] Open
Abstract
Quantum chemical calculations at the B3LYP/6–31G* level of theory were employed for the structure-activity relationship and prediction of the antioxidant activity of edaravone and structurally related derivatives using energy (E), ionization potential (IP), bond dissociation energy (BDE), and stabilization energies (ΔEiso). Spin density calculations were also performed for the proposed antioxidant activity mechanism. The electron abstraction is related to electron-donating groups (EDG) at position 3, decreasing the IP when compared to substitution at position 4. The hydrogen abstraction is related to electron-withdrawing groups (EDG) at position 4, decreasing the BDECH when compared to other substitutions, resulting in a better antioxidant activity. The unpaired electron formed by the hydrogen abstraction from the C–H group of the pyrazole ring is localized at 2, 4, and 6 positions. The highest scavenging activity prediction is related to the lowest contribution at the carbon atom. The likely mechanism is related to hydrogen transfer. It was found that antioxidant activity depends on the presence of EDG at the C2 and C4 positions and there is a correlation between IP and BDE. Our results identified three different classes of new derivatives more potent than edaravone.
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