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Khelifi R, Latelli N, Charifi Z, Morell C, Chermette H. Predicting the activity of methoxyphenol derivatives antioxidants: II-Importance of the nature of the solvent on the mechanism, a DFT study. J Comput Chem 2024; 45:886-897. [PMID: 38156812 DOI: 10.1002/jcc.27284] [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: 10/11/2023] [Revised: 11/25/2023] [Accepted: 11/28/2023] [Indexed: 01/03/2024]
Abstract
The various mechanisms of primary antioxidant action of a series of 2-Methoxyphenols are investigated in the present work. The electronic properties have just been studied in a joint article, so that we focus here on Hydrogen Atom Transfer (HAT), Single Electron Transfer-Proton Transfer (SET-PT) and Sequential Proton-Loss Electron-Transfer (SPLET) mechanisms. The two computational approaches used in the previous study of the structure and reactivity of these compounds [Computational and Theoretical Chemistry 1229 (2023) 114287] provide identical mechanisms trends in gas phase. In gas media, hydrogen atom transfer (HAT) is more favored. On the contrary, the solvent polarity has a significant effect on the mechanism of the antioxidant activity, since the polarity of the solvent increases the contribution of the SPLET mechanism.
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Affiliation(s)
- Roumaissa Khelifi
- Faculté des sciences, Département de chimie, Université de Msila, M'sila, Algeria
- Laboratoire des Matériaux Inorganiques (LMI), Université de Msila, M'sila, Algeria
| | - Nadjia Latelli
- Faculté des sciences, Département de chimie, Université de Msila, M'sila, Algeria
- Laboratoire chimie des matériaux et des vivants: activité, réactivité, Université El-Hadj Lakhdar Batna, Batna, Algeria
| | - Zoulikha Charifi
- Department of Physics, Faculty of Science, University of M'sila, M'sila, Algeria
- Laboratory of Physics and Chemistry of Materials, University of M'sila, M'sila, Algeria
| | - Christophe Morell
- Université de Lyon, Université Lyon 1 et CNRS UMR 5280, Institut des Sciences Analytiques, Villeurbanne, France
| | - Henry Chermette
- Université de Lyon, Université Lyon 1 et CNRS UMR 5280, Institut des Sciences Analytiques, Villeurbanne, France
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2
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Kumari S, Thakur M, Chauhan C, Kumari M. Synthesis, characterization, biological activity and computation-based efficacy of cobalt(II) complexes of biphenyl-2-ol against SARS-CoV-2 virus. J Biomol Struct Dyn 2023:1-15. [PMID: 37990487 DOI: 10.1080/07391102.2023.2283144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 11/06/2023] [Indexed: 11/23/2023]
Abstract
Cobalt(II) complexes of biphenyl-2-ol of composition, CoCl2-n(OC6H4C6H5-2)n(H2O)4 (where n = 1 or 2), were prepared by reacting cobaltous(II) chloride with equi- and bimolar ratios of sodium salt of biphenyl-2-ol. The structural characterization of the synthesized complexes was accomplished by NMR, FTIR, thermogravimetry (TGA), high resolution mass spectroscopy (HRMS), electronic spectroscopic techniques coupled with density functional theory (DFT). The stability of the complexes in different pH media of solvent was studied. Chemical reactivity parameters of the newly synthesized complexes, computed using DFT, indicated greater reactivity of complex 2 over complex 1 and free ligand as indicated by its low HOMO-LUMO energy gap corresponding to 1.71 eV. Molecular docking (MD) studies were carried out in order to study the binding affinities between amino acid residues of DNA duplex (PDB ID: 1BNA) and SARS-CoV-2 (PDB ID: 7T9K) with newly synthesized complexes. Complex 2 has shown promising antivirus behaviour with an inhibition constant value of 0.0423 µmol-1 with amino acid residues of SARS-CoV-2 virus. Toxicity of the complexes was predicted using ProTox-II online server. Antibacterial studies have indicated the complexes to exhibit greater efficacy than the free ligand, while the antioxidant activities have suggested them to display enhanced antioxidant behaviour as compared to reference compounds.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Shalima Kumari
- Department of Chemistry, Himachal Pradesh University, Shimla, India
| | - Maridula Thakur
- Department of Chemistry, Himachal Pradesh University, Shimla, India
| | - Chetan Chauhan
- Department of Chemistry, Himachal Pradesh University, Shimla, India
| | - Meena Kumari
- Department of Chemistry, Himachal Pradesh University, Shimla, India
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3
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Chen M, Li Z, Sun G, Jin S, Hao X, Zhang C, Liu L, Zhang L, Liu H. Theoretical study on the free radical scavenging potency and mechanism of natural coumestans: Roles of substituent, noncovalent interaction and solvent. PHYTOCHEMISTRY 2023; 207:113580. [PMID: 36587886 DOI: 10.1016/j.phytochem.2022.113580] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/19/2022] [Accepted: 12/28/2022] [Indexed: 06/17/2023]
Abstract
The free radical scavenging potency and mechanisms of seven representative natural coumestans were systematically evaluated using density functional theory (DFT) approach. Thermodynamic feasibility of different mechanisms was assessed by various physio-chemical descriptors involved in the double (2H+/2e‒) radical-trapping processes. Energy diagram and related transition state structures of the reaction between wedelolactone (WEL) and hydroperoxyl radical were constructed to further uncover the radical-trapping details. Results showed that the studied coumestans prefer to scavenge radicals via formal hydrogen atom transfer (fHAT) mechanism in the gas phase and non-polar environment, whereas sequential proton loss electron transfer (SPLET) is favored in polar media. Moreover, the feasibility of second fHAT and SPLET processes was also revealed. Sequential double proton loss double electron transfer (SdPLdET) mechanism represents the preferred pathway in aqueous solution at physiological pH. Our findings highlight the essential role of ortho-dihydroxyl group, noncovalent interaction and solvents on radical-trapping potency. 4'-OH in D-ring was found to be the most favorable site to trap radical for most of the studied coumestans, whereas 3-OH in A-ring for lucernol (LUN).
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Affiliation(s)
- Mohan Chen
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical University, No.209, Tongshan Road, Xuzhou, Jiangsu, 221004, China
| | - Zheng Li
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical University, No.209, Tongshan Road, Xuzhou, Jiangsu, 221004, China
| | - Gang Sun
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical University, No.209, Tongshan Road, Xuzhou, Jiangsu, 221004, China
| | - Shuang Jin
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical University, No.209, Tongshan Road, Xuzhou, Jiangsu, 221004, China
| | - Xiyue Hao
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical University, No.209, Tongshan Road, Xuzhou, Jiangsu, 221004, China
| | - Chi Zhang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical University, No.209, Tongshan Road, Xuzhou, Jiangsu, 221004, China
| | - Ling Liu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical University, No.209, Tongshan Road, Xuzhou, Jiangsu, 221004, China
| | - Ling Zhang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical University, No.209, Tongshan Road, Xuzhou, Jiangsu, 221004, China
| | - Hongli Liu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical University, No.209, Tongshan Road, Xuzhou, Jiangsu, 221004, China.
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4
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Hostnik G, Tošović J, Štumpf S, Petek A, Bren U. The influence of pH on UV/Vis spectra of gallic and ellagic acid: A combined experimental and computational study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 267:120472. [PMID: 34653808 DOI: 10.1016/j.saa.2021.120472] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 09/28/2021] [Accepted: 10/03/2021] [Indexed: 06/13/2023]
Abstract
The pH dependence of the UV/Vis spectrum of gallic and ellagic acid was measured in a buffer-free solution to obtain reliable data at wavelengths bellow 230 nm. UV/Vis absorption spectra were also calculated for all possible ionised species of gallic and ellagic acid using time dependent density functional theory (TD-DFT). From pKa values of gallic and ellagic acid the molar fraction of different ionised species was calculated for each pH value. Finally, the simulated spectra at different pH values were obtained as a weighted average of spectra of neutral, once, twice, three-times, and four-times deprotonated species. The calculated spectra were then compared to the experimental spectra, and the peaks in the experimental spectrum were explained in the terms of main electronic transitions that results in the observed absorption bands. At low pH values the agreement between the experimental and calculated spectra was excellent. At near-neutral pH values the majority of the experimental spectra features were well reproduced in the calculated spectra. A satisfactory agreement between experimental and calculated spectrum at high pH values was also achieved by incorporating the calculated spectra of the oxidised species of gallic acid as well as ellagic acid spectra with one lactone ring open.
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Affiliation(s)
- Gregor Hostnik
- Faculty of Chemistry and Chemical Technology, University of Maribor, Smetanova 17, Maribor SI-2000, Slovenia
| | - Jelena Tošović
- Faculty of Chemistry and Chemical Technology, University of Maribor, Smetanova 17, Maribor SI-2000, Slovenia
| | - Sara Štumpf
- Faculty of Chemistry and Chemical Technology, University of Maribor, Smetanova 17, Maribor SI-2000, Slovenia
| | - Anja Petek
- Faculty of Chemistry and Chemical Technology, University of Maribor, Smetanova 17, Maribor SI-2000, Slovenia
| | - Urban Bren
- Faculty of Chemistry and Chemical Technology, University of Maribor, Smetanova 17, Maribor SI-2000, Slovenia; Faculty of Mathematics, Natural Sciences and Information Technologies, University of Primorska, Glagoljaşka 8, Koper SI-6000, Slovenia.
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5
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Aluminum(III), iron(III) and copper(II) complexes of luteolin: Stability, antioxidant, and anti-inflammatory properties. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117895] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Ben T, Wu P, Zou H, Chen Y. Characterization of nitrite degradation by polyphenols in sea buckthorn (Hippophaë rhamnoides L.) by density function theory calculations. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111884] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Xue Y, Teng Y, Chen M, Li Z, Wang G. Antioxidant Activity and Mechanism of Avenanthramides: Double H +/e - Processes and Role of the Catechol, Guaiacyl, and Carboxyl Groups. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:7178-7189. [PMID: 34156855 DOI: 10.1021/acs.jafc.1c01591] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Avenanthramides (AVAs), unique phenolic compounds in oats, have attracted increasing interest due to their health benefits. Eight representative AVAs were studied using the density functional theory (DFT) method to elucidate their antioxidant activity and mechanism. Preference of different mechanisms was evaluated based on thermodynamic descriptors involved in double (2H+/2e-) free radical scavenging reactions. It was found that the hydrogen atom transfer (HAT) mechanism is more favorable in the gas and benzene phases, while sequential proton loss electron transfer (SPLET) is preferred in polar media. The results suggest the feasibility of the double HAT and double SPLET mechanisms for 2s and c-series AVAs. The sequential triple proton loss double electron transfer (StPLdET) mechanism represents the dominant pathway in aqueous solution at physiological pH. In addition, the sequential proton loss hydrogen atom transfer (SPLHAT) mechanism provides an alternative pathway to trap free radicals. Results also revealed the important role of the catechol, guaiacyl, and carboxyl moieties.
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Affiliation(s)
- Yunsheng Xue
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical University, No.209, Tongshan Road, Xuzhou, Jiangsu 221004, China
| | - Yangxin Teng
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical University, No.209, Tongshan Road, Xuzhou, Jiangsu 221004, China
| | - Mohan Chen
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical University, No.209, Tongshan Road, Xuzhou, Jiangsu 221004, China
| | - Zheng Li
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical University, No.209, Tongshan Road, Xuzhou, Jiangsu 221004, China
| | - Guirong Wang
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical University, No.209, Tongshan Road, Xuzhou, Jiangsu 221004, China
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8
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How the functional group substitution and solvent effects affect the antioxidant activity of (+)-catechin? J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114818] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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9
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Zheng YZ, Fu ZM, Deng G, Guo R, Chen DF. Free radical scavenging potency of ellagic acid and its derivatives in multiple H +/e ‒ processes. PHYTOCHEMISTRY 2020; 180:112517. [PMID: 32950773 DOI: 10.1016/j.phytochem.2020.112517] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 07/16/2020] [Accepted: 09/07/2020] [Indexed: 06/11/2023]
Abstract
The reaction energetics of the multiple free radical scavenging mechanisms of ellagic acid and its derivatives were studied by DFT method. Ellagic acid and its derivatives that bear catechol or guaiacyl moieties can proceed multiple free radical scavenging processes. Intramolecular hydrogen-bonds were found in the most stable geometries of the investigated compounds and can influence the antioxidant activity of the related groups and hydrogen atom/proton loss sequence. The stronger hydrogen-bond, the weaker antioxidant activity of the hydrogen atom/proton-donating group. The preferred mechanisms vary among different phases. All of the investigated compounds prefer to trap free radicals by multiple HAT mechanisms in gas and benzene phases. The second HAT reaction preferably occurs in the same catechol or guaiacyl unit of the first HAT group with the formation of stable quinone or benzodioxole. The catechol and guaiacyl moieties not only retain high free radical scavenging ability of the parent compounds but even show increased potency for the second and fourth H+/e‒ reactions. In water phase, ellagic acid and its derivatives would proceed consecutively PL reactions from the OH groups. The formed di/tri/tetra-anion would proceed one/four electron transfers following with single/double SPLET mechanism and electron donation reactions until forming the stable quinone or benzodioxole.
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Affiliation(s)
- Yan-Zhen Zheng
- College of Animal Sciences (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China; Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong
| | - Zhong-Min Fu
- College of Animal Sciences (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China
| | - Geng Deng
- Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, PR China
| | - Rui Guo
- College of Animal Sciences (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China
| | - Da-Fu Chen
- College of Animal Sciences (College of Bee Science), Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China.
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10
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Antioxidative Action of Ellagic Acid-A Kinetic DFT Study. Antioxidants (Basel) 2020; 9:antiox9070587. [PMID: 32640518 PMCID: PMC7402119 DOI: 10.3390/antiox9070587] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/02/2020] [Accepted: 07/03/2020] [Indexed: 12/15/2022] Open
Abstract
Although one can find numerous studies devoted to the investigation of antioxidative activity of ellagic acid (EA) in the scientific literature, the mechanisms of its action have not yet been fully clarified. Therefore, further kinetic studies are needed to understand its antioxidative capacity completely. This work aims to reveal the underlying molecular mechanisms responsible for the antioxidative action of EA. For this purpose, its reactions with HO• and CCl3OO• radicals were simulated at physiological conditions using the quantum mechanics-based test for overall free-radical scavenging activity. The density functional theory in combination with the conductor-like polarizable continuum solvation model was utilized. With HO• radical EA conforms to the hydrogen atom transfer and radical adduct formation mechanisms, whereas sequential proton loss electron transfer mechanism is responsible for scavenging of CCl3OO• radical. In addition, compared to trolox, EA was found more reactive toward HO•, but less reactive toward CCl3OO•. The calculated rate constants for the reactions of EA with both free radicals are in a very good agreement with the corresponding experimental values.
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11
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Shahraki A, Ebrahimi A. Ellagitannin derivatives and some conjugated metabolites: aqueous-DMSO proton affinities and acidity constants. Struct Chem 2019. [DOI: 10.1007/s11224-019-1284-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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Choudhary V, Bhatt A, Dash D, Sharma N. DFT calculations on molecular structures, HOMO–LUMO study, reactivity descriptors and spectral analyses of newly synthesized diorganotin(IV) 2‐chloridophenylacetohydroxamate complexes. J Comput Chem 2019; 40:2354-2363. [DOI: 10.1002/jcc.26012] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 04/23/2019] [Accepted: 06/09/2019] [Indexed: 12/21/2022]
Affiliation(s)
| | - ArvindKumar Bhatt
- Department of BiotechnologyHimachal Pradesh University Summer Hill, Shimla‐5 India
| | - Dibyajit Dash
- Department of ChemistrySant Longowal Institute of Engineering & Technology Longowal Sangrur Punjab 148106 India
| | - Neeraj Sharma
- Department of ChemistryHimachal Pradesh University Summer Hill, Shimla‐5 India
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13
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da Silva ACP, Paiva JP, Diniz RR, Dos Anjos VM, Silva ABSM, Pinto AV, Dos Santos EP, Leitão AC, Cabral LM, Rodrigues CR, de Pádula M, Santos BAMC. Photoprotection assessment of olive (Olea europaea L.) leaves extract standardized to oleuropein: In vitro and in silico approach for improved sunscreens. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2019; 193:162-171. [PMID: 30884286 DOI: 10.1016/j.jphotobiol.2019.03.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 01/16/2019] [Accepted: 03/09/2019] [Indexed: 11/25/2022]
Abstract
Olive leaves contain higher amount of polyphenols than olive oil and represent a waste product from olive harvest and pruning of olive trees. The most abundant compound in olive leaves is oleuropein. Benefits of the topical application of olive leaves extract were previously reported, but little information is available on its photoprotective potential and the result of the association of this extract with organic UV filters in topical sunscreen formulations. The olive leaves extract photoprotective potential is less explored for both oral and topical photoprotection in comparison with other plants extracts and polyphenols, such as Polypodium leucotomos extract and resveratrol. There are increasing efforts towards developing more efficient sunscreens and a photoprotection assessement along with a better understanding of the photochemistry of naturally occurring sunscreens could aid the design of new and improved commercial sunscreen formulations. This study was designed to investigate the photoprotective potential of olive leaves extract standardized for oleuropein performing a set of in vitro and in silico tools as an innovative approach, highlighting yeast assays, in vitro Sun Protection Factor (SPF) and molecular modelling studies of UV absorption. This study supports the use of olive leaves extract for photoprotection, as an effective photoprotective, anti-mutagenic and antioxidant active, also showing a synergistic effect in association with UV filters with an improvement on in vitro SPF of sunscreen formulations.
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Affiliation(s)
- Anne C P da Silva
- Laboratório de Planejamento Farmacêutico e Simulação Computacional (LaPFarSC), Faculdade de Farmácia, CCS, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21949-900, Brazil
| | - Juliana P Paiva
- Laboratório de Microbiologia e Avaliação Genotóxica (LAMIAG), Faculdade de Farmácia, CCS, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21949-900, Brazil
| | - Raiane R Diniz
- Laboratório de Microbiologia e Avaliação Genotóxica (LAMIAG), Faculdade de Farmácia, CCS, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21949-900, Brazil; Instituto Nacional de Controle de Qualidade em Saúde (INCQS), Fundação Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil
| | - Vitor M Dos Anjos
- Laboratório de Planejamento Farmacêutico e Simulação Computacional (LaPFarSC), Faculdade de Farmácia, CCS, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21949-900, Brazil
| | - Ana Beatriz S M Silva
- Laboratório de Planejamento Farmacêutico e Simulação Computacional (LaPFarSC), Faculdade de Farmácia, CCS, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21949-900, Brazil
| | - Alicia Viviana Pinto
- Instituto Nacional de Controle de Qualidade em Saúde (INCQS), Fundação Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil
| | - Elisabete P Dos Santos
- Laboratório de Desenvolvimento Galênico (LADEG), Faculdade de Farmácia, CCS, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21949-900, Brazil
| | - Alvaro C Leitão
- Laboratório de Radiobiologia Molecular (Radmol), Instituto de Biofísica Carlos Chagas Filho, CCS, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21949-900, Brazil
| | - Lucio M Cabral
- Laboratório de Tecnologia Industrial Farmacêutica (LabTIF), Faculdade de Farmácia, CCS, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21949-900, Brazil
| | - Carlos R Rodrigues
- Laboratório de Modelagem Molecular & QSAR-3D (ModMolQSAR), Faculdade de Farmácia, CCS, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21949-900, Brazil
| | - Marcelo de Pádula
- Laboratório de Microbiologia e Avaliação Genotóxica (LAMIAG), Faculdade de Farmácia, CCS, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21949-900, Brazil
| | - Bianca Aloise M C Santos
- Laboratório de Planejamento Farmacêutico e Simulação Computacional (LaPFarSC), Faculdade de Farmácia, CCS, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21949-900, Brazil; Laboratório de Microbiologia e Avaliação Genotóxica (LAMIAG), Faculdade de Farmácia, CCS, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21949-900, Brazil.
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14
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Shahraki A, Ebrahimi A. Binding of ellagic acid and urolithin metabolites to the CK2 protein, based on the ONIOM method and molecular docking calculations. NEW J CHEM 2019. [DOI: 10.1039/c9nj03508g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Using three-layer ONIOM and molecular docking calculations to investigate the binding of urolithins to the active site of the CK2 protein.
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Affiliation(s)
- Asiyeh Shahraki
- Department of Chemistry
- Computational Quantum Chemistry Laboratory
- University of Sistan and Baluchestan
- Zahedan
- Iran
| | - Ali Ebrahimi
- Department of Chemistry
- Computational Quantum Chemistry Laboratory
- University of Sistan and Baluchestan
- Zahedan
- Iran
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15
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El-Hadj Saïd A, Mekelleche SM, Ardjani TEA. Theoretical insight into the substituent effects on the antioxidant properties of 8-hydroxyquinoline derivatives in gas phase and in polar solvents. CAN J CHEM 2018. [DOI: 10.1139/cjc-2017-0457] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The objective of this work is to perform a theoretical analysis of the antioxidant properties of a series of 8-hydroxyquinolines (8-HQs) to rationalize the available experimental results and to design new potent 8-HQ derivatives. The study was carried out in gas phase and in methanol at the DFT/B3LYP/ 6-311++G(d,p) computational level. The formation of stable ArO• radicals is discussed on the basis of different mechanisms, namely, hydrogen atom transfer (HAT), single electron transfer followed by proton transfer (SET-PT), and single proton loss electron transfer (SPLET). The obtained results show that the HAT mechanism is, thermodynamically, more favoured in gas phase, whereas the SPLET pathway is more favoured in polar solvents. The calculated thermochemical descriptors allow classification of the antioxidant power of the studied compounds.
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Affiliation(s)
- Anes El-Hadj Saïd
- Laboratory of Applied Thermodynamics and Molecular Modelling, Department of Chemistry, Faculty of Science, University of Tlemcen, PB 119, Tlemcen, 13000, Algeria
- Laboratory of Applied Thermodynamics and Molecular Modelling, Department of Chemistry, Faculty of Science, University of Tlemcen, PB 119, Tlemcen, 13000, Algeria
| | - Sidi Mohamed Mekelleche
- Laboratory of Applied Thermodynamics and Molecular Modelling, Department of Chemistry, Faculty of Science, University of Tlemcen, PB 119, Tlemcen, 13000, Algeria
- Laboratory of Applied Thermodynamics and Molecular Modelling, Department of Chemistry, Faculty of Science, University of Tlemcen, PB 119, Tlemcen, 13000, Algeria
| | - Taki-Eddine Ahmed Ardjani
- Laboratory of Applied Thermodynamics and Molecular Modelling, Department of Chemistry, Faculty of Science, University of Tlemcen, PB 119, Tlemcen, 13000, Algeria
- Laboratory of Applied Thermodynamics and Molecular Modelling, Department of Chemistry, Faculty of Science, University of Tlemcen, PB 119, Tlemcen, 13000, Algeria
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16
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Fotschki B, Juśkiewicz J, Kołodziejczyk K, Jurgoński A, Kosmala M, Milala J, Ognik K, Zduńczyk Z. Protective Effects of Ellagitannin-Rich Strawberry Extracts on Biochemical and Metabolic Disturbances in Rats Fed a Diet High in Fructose. Nutrients 2018; 10:nu10040445. [PMID: 29617310 PMCID: PMC5946230 DOI: 10.3390/nu10040445] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 03/29/2018] [Accepted: 03/30/2018] [Indexed: 01/15/2023] Open
Abstract
The present study compares the effects of two dietary strawberry extracts rich in monomeric (ME) or dimeric (DE) ellagitannins (ETs) on gastrointestinal, blood and tissue biomarkers in Wistar rats fed high-fructose diets. Both strawberry extracts beneficially affect the antioxidant status and lipid profile of the liver and serum. The ME extract shows a greater ability to inhibit lipid peroxidation in kidneys, more effectively decreases serum and liver triglycerides, and exerts greater anti-inflammatory effects in blood serum than the DE extract. The DE extract significantly reduces the activity of microbial enzymes in the cecum. These effects might be associated with higher cecum and urine levels of ET metabolites in rats fed with ME than in rats fed with DE. In conclusion, the diet-induced fructose-related disturbances observed in biochemical parameters are regulated by both extracts; nevertheless, the beneficial effects of the ME extract are mostly associated with systemic parameters, while those of the DE extracts are associated with local microbial activity.
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Affiliation(s)
- Bartosz Fotschki
- Institute of Animal Reproduction and Food Research, Division of Food Science, Tuwima 10, 10-748 Olsztyn, Poland.
| | - Jerzy Juśkiewicz
- Institute of Animal Reproduction and Food Research, Division of Food Science, Tuwima 10, 10-748 Olsztyn, Poland.
| | - Krzysztof Kołodziejczyk
- Institute of Food Technology and Analysis, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland.
| | - Adam Jurgoński
- Institute of Animal Reproduction and Food Research, Division of Food Science, Tuwima 10, 10-748 Olsztyn, Poland.
| | - Monika Kosmala
- Institute of Food Technology and Analysis, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland.
| | - Joanna Milala
- Institute of Food Technology and Analysis, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Lodz, Poland.
| | - Katarzyna Ognik
- Department of Biochemistry and Toxicology, Faculty of Biology, Animal Sciences and Bioeconomy, University of Life Sciences, 20-950 Lublin, Poland.
| | - Zenon Zduńczyk
- Institute of Animal Reproduction and Food Research, Division of Food Science, Tuwima 10, 10-748 Olsztyn, Poland.
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17
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Zeb A. Ellagic acid in suppressing in vivo and in vitro oxidative stresses. Mol Cell Biochem 2018; 448:27-41. [PMID: 29388153 DOI: 10.1007/s11010-018-3310-3] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Accepted: 01/27/2018] [Indexed: 01/20/2023]
Abstract
Oxidative stress is a biological condition produced by a variety of factors, causing several chronic diseases. Oxidative stress was, therefore, treated with natural antioxidants, such as ellagic acid (EA). EA has a major role in protecting against different diseases associated with oxidative stress. This review critically discussed the antioxidant role of EA in biological systems. The in vitro and in vivo studies have confirmed the protective role of EA in suppressing oxidative stress. The review also discussed the mechanism of EA in suppressing of oxidative stress, which showed that EA activates specific endogenous antioxidant enzymes and suppresses specific genes responsible for inflammation, diseases, or disturbance of biochemical systems. The amount of EA used and duration, which plays a significant role in the treatment of oxidative stress has been discussed. In conclusion, EA is a strong natural antioxidant, which possesses the suppressing power of oxidative stress in biological systems.
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Affiliation(s)
- Alam Zeb
- Laboratory of Biochemistry, Department of Biotechnology, University of Malakand, Chakdara, Lower Dir, Khyber Pakhtunkhwa, Pakistan.
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18
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Hernandez DA, Tenorio FJ. Reactivity indexes of antioxidant molecules from Rosmarinus officinalis. Struct Chem 2017. [DOI: 10.1007/s11224-017-1066-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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19
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Identification of flavanones from Boesenbergia rotunda as potential antioxidants and monoamine oxidase B inhibitors. CHEMICAL PAPERS 2017. [DOI: 10.1007/s11696-017-0241-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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20
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Structure, antioxidative potency and potential scavenging of OH and OOH of phenylethyl-3,4-dihydroxyhydrocinnamate in protic and aprotic media: DFT study. J Mol Graph Model 2017; 78:221-233. [DOI: 10.1016/j.jmgm.2017.10.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 10/09/2017] [Accepted: 10/16/2017] [Indexed: 02/06/2023]
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21
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Phenolic compounds of Triplaris gardneriana can protect cells against oxidative stress and restore oxidative balance. Biomed Pharmacother 2017; 93:1261-1268. [DOI: 10.1016/j.biopha.2017.07.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 07/06/2017] [Accepted: 07/11/2017] [Indexed: 01/20/2023] Open
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22
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Tang N, Skibsted LH. Sequential Proton Loss Electron Transfer in Deactivation of Iron(IV) Binding Protein by Tyrosine Based Food Components. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:6195-6210. [PMID: 28681604 DOI: 10.1021/acs.jafc.7b02420] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The iron(IV) binding protein ferrylmyoglobin, MbFe(IV)═O, was found to be reduced by tyrosine based food components in aqueous solution through a sequential proton loss electron transfer reaction mechanism without binding to the protein as confirmed by isothermal titration calorimetry. Dopamine and epinephrine are the most efficient food components reducing ferrylmyoglobin to oxymyoglobin, MbFe(II)O2, and metmyoglobin, MbFe(III), as revealed by multivariate curve resolution alternating least-squares with second order rate constants of 33.6 ± 2.3 L/mol/s (ΔH⧧ of 19 ± 5 kJ/mol, ΔS⧧ of -136 ± 18 J/mol K) and 228.9 ± 13.3 L/mol/s (ΔH⧧ of 110 ± 7 kJ/mol, ΔS⧧ of 131 ± 25 J/mol K), respectively, at pH 7.4 and 25 °C. The other tyrosine based food components were found to reduce ferrylmyoglobin to metmyoglobin with similar reduction rates at pH 7.4 and 25 °C. These reduction reactions were enhanced by protonation of ferrylmyoglobin and facilitated proton transfer at acidic conditions. Enthalpy-entropy compensation effects were observed for the activation parameters (ΔH⧧ and ΔS⧧), indicating the common reaction mechanism. Moreover, principal component analysis combined with heat map were performed to understand the relationship between density functional theory calculated molecular descriptors and kinetic data, which was further modeled by partial least squares for quantitative structure-activity relationship analysis. In addition, a three tyrosine residue containing protein, lysozyme, was also found to be able to reduce ferrylmyoglobin with a second order rate constant of 66 ± 28 L/mol/s as determined by a competitive kinetic method.
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Affiliation(s)
- Ning Tang
- Department of Food Science, University of Copenhagen , Rolighedsvej 30, DK-1958 Frederiksberg C, Denmark
| | - Leif H Skibsted
- Department of Food Science, University of Copenhagen , Rolighedsvej 30, DK-1958 Frederiksberg C, Denmark
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23
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Malloum A, Fifen JJ, Dhaouadi Z, Nana Engo SG, Jaidane NE. Structures and spectroscopy of medium size protonated ammonia clusters at different temperatures, H+(NH3)10–16. J Chem Phys 2017; 146:044305. [DOI: 10.1063/1.4974179] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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24
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Tošović J, Marković S. Reproduction and interpretation of the UV–vis spectra of some flavonoids. CHEMICAL PAPERS 2017. [DOI: 10.1007/s11696-016-0002-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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Phenolic Melatonin-Related Compounds: Their Role as Chemical Protectors against Oxidative Stress. Molecules 2016; 21:molecules21111442. [PMID: 27801875 PMCID: PMC6274579 DOI: 10.3390/molecules21111442] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 10/17/2016] [Accepted: 10/24/2016] [Indexed: 12/22/2022] Open
Abstract
There is currently no doubt about the serious threat that oxidative stress (OS) poses to human health. Therefore, a crucial strategy to maintain a good health status is to identify molecules capable of offering protection against OS through chemical routes. Based on the known efficiency of the phenolic and melatonin (MLT) families of compounds as antioxidants, it is logical to assume that phenolic MLT-related compounds should be (at least) equally efficient. Unfortunately, they have been less investigated than phenols, MLT and its non-phenolic metabolites in this context. The evidence reviewed here strongly suggests that MLT phenolic derivatives can act as both primary and secondary antioxidants, exerting their protection through diverse chemical routes. They all seem to be better free radical scavengers than MLT and Trolox, while some of them also surpass ascorbic acid and resveratrol. However, there are still many aspects that deserve further investigations for this kind of compounds.
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26
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Makola MM, Madala NE, Dubery IA, Steenkamp PA, Kabanda MM. Influence of the geometric isomers on the radical scavenging properties of 3,5-dicaffeoylquinic acid: A DFT study in vacuo and in solution. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2016. [DOI: 10.1142/s0219633616500528] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
3,5-Dicaffeoylquinic acid (diCQA) is a part of the chlorogenic acid group of compounds, largely isolated from food sources and possessing potent antioxidant activity. Only the trans–trans isomer exists in nature, however, abiotic stresses, such as UV-radiation, give rise to cis isomers. There have been no reports on the antioxidant activity of the cis isomers. The current study, performed using the B3LYP/6-311[Formula: see text]G(d,p) method, is aimed at investigating and comparing the antioxidant properties of the geometrical isomers of 3,5-diCQA. The study is conducted by checking the molecules’ ability for two main radical scavenging mechanisms, hydrogen atom transfer (HAT) and electron transfer (ET). A separate DPPH assay experimental study performed in this study shows that all the geometrical isomers are potent radical scavengers. The lowest O[Formula: see text]H bond dissociation enthalpy value (70.599 kcal/mol) corresponds to the trans–trans isomer and is comparable to that of gallic acid, a commercially available antioxidant. The lowest ionization potential value corresponds to the cis–cis isomer (149.54[Formula: see text]kcal/mol), indicating that it is best antioxidant, in terms of ET mechanism.
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Affiliation(s)
- Mpho M. Makola
- Department of Biochemistry, University of Johannesburg P.O. Box 524, Auckland Park, Johannesburg 2006, South Africa
| | - Ntakadzeni E. Madala
- Department of Biochemistry, University of Johannesburg P.O. Box 524, Auckland Park, Johannesburg 2006, South Africa
| | - Ian A. Dubery
- Department of Biochemistry, University of Johannesburg P.O. Box 524, Auckland Park, Johannesburg 2006, South Africa
| | - Paul A. Steenkamp
- Council for Scientific and Industrial Research (CSIR), Biosciences, Natural Products and Agroprocessing Group, Pretoria 0001, South Africa
| | - Mwadham. M. Kabanda
- Department of Chemistry, Faculty of Agriculture, Science and Technology, School of Mathematical and Physical Science, North-West University (Mafikeng Campus), Private Bag X2046, Mmabatho 2735, South Africa
- Material Science Innovation and Modelling (MaSIM), Research Focus Area, Faculty of Agriculture, Science and Technology, North-West University (Mafikeng Campus), Private Bag X2046, Mmabatho 2735, South Africa
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27
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Borgohain R, Handique JG, Guha AK, Pratihar S. A theoretical study on antioxidant activity of ferulic acid and its ester derivatives. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2016. [DOI: 10.1142/s0219633616500280] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Phenolic compounds play a very crucial role as antioxidant that can prevent various diseases caused by free radicals in human body. Although, lots of natural phenolic compounds having antioxidant activity are available nowadays, the modeling of compounds with naturally available phenolics as building blocks is very important in order to get enhanced antioxidant activity. In this study, Ferulic acid (FA), one natural phenolic acid present in coffee, apples, orange, etc., is taken as building block and its ester derivatives with different alkyl groups are subjected to measure the antioxidant activity by using density functional theory (DFT). Various parameters like bond dissociation enthalpy (BDE), vertical ionization potential (IP[Formula: see text]), reactivity descriptors, metal chelation ability, etc. are used to measure the antioxidant activity. All the parameters suggest that the ester derivatives are superior antioxidants to the parent FA. Since FA has been reported to be present as esters in many herbs and plants, hence our study provides a route to study the structure activity relationship of this class of natural phenolics with antioxidant activity.
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Affiliation(s)
- Romesh Borgohain
- Department of Chemistry, Dibrugarh University, Dibrugarh-786004, Assam, India
| | | | - Ankur Kanti Guha
- Department of Chemistry, Cotton College State University, Guwahati-781001, Assam, India
| | - Sanjay Pratihar
- Department of Chemical Sciences, Tezpur University, Tezpur, Assam-784028, India
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28
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Galano A, Mazzone G, Alvarez-Diduk R, Marino T, Alvarez-Idaboy JR, Russo N. Food Antioxidants: Chemical Insights at the Molecular Level. Annu Rev Food Sci Technol 2016; 7:335-52. [DOI: 10.1146/annurev-food-041715-033206] [Citation(s) in RCA: 227] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Annia Galano
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, C. P. 09340, Ciudad de México, D. F., México
| | - Gloria Mazzone
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, I-87036 Arcavacata di Rende, Italy;
| | - Ruslán Alvarez-Diduk
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, C. P. 09340, Ciudad de México, D. F., México
| | - Tiziana Marino
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, I-87036 Arcavacata di Rende, Italy;
| | - J. Raúl Alvarez-Idaboy
- Departamento de Física y Química Teórica, Facultad de Química, Universidad Nacional Autónoma de México, 04510 Ciudad de México, D. F., Mexico
| | - Nino Russo
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, I-87036 Arcavacata di Rende, Italy;
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29
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30
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Mazzone G, Russo N, Toscano M. Antioxidant properties comparative study of natural hydroxycinnamic acids and structurally modified derivatives: Computational insights. COMPUT THEOR CHEM 2016. [DOI: 10.1016/j.comptc.2015.10.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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31
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Malloum A, Fifen JJ, Dhaouadi Z, Nana Engo SG, Jaidane NE. Structures and spectroscopy of protonated ammonia clusters at different temperatures. Phys Chem Chem Phys 2016; 18:26827-26843. [DOI: 10.1039/c6cp03240k] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Protonated ammonia clusters are all Eigen structures and the first solvation shell of the related ammonium ion core is saturated by four ammonia molecules.
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Affiliation(s)
- Alhadji Malloum
- Department of Physics
- Faculty of Science
- The University of Ngaoundere
- Ngaoundere
- Cameroon
| | - Jean Jules Fifen
- Department of Physics
- Faculty of Science
- The University of Ngaoundere
- Ngaoundere
- Cameroon
| | - Zoubeida Dhaouadi
- Laboratoire de Spectroscopie Atomique Moléculaire et Applications
- Faculté des Sciences de Tunis
- Université de Tunis El Manar
- Campus Universitaire
- Tunis
| | - Serge Guy Nana Engo
- Department of Physics
- Faculty of Science
- The University of Ngaoundere
- Ngaoundere
- Cameroon
| | - Nejm-Eddine Jaidane
- Laboratoire de Spectroscopie Atomique Moléculaire et Applications
- Faculté des Sciences de Tunis
- Université de Tunis El Manar
- Campus Universitaire
- Tunis
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32
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Chen Y, Xiao H, Zheng J, Liang G. Structure-thermodynamics-antioxidant activity relationships of selected natural phenolic acids and derivatives: an experimental and theoretical evaluation. PLoS One 2015; 10:e0121276. [PMID: 25803685 PMCID: PMC4372407 DOI: 10.1371/journal.pone.0121276] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 01/29/2015] [Indexed: 11/18/2022] Open
Abstract
Phenolic acids and derivatives have potential biological functions, however, little is known about the structure-activity relationships and the underlying action mechanisms of these phenolic acids to date. Herein we investigate the structure-thermodynamics-antioxidant relationships of 20 natural phenolic acids and derivatives using DPPH• scavenging assay, density functional theory calculations at the B3LYP/6-311++G(d,p) levels of theory, and quantitative structure-activity relationship (QSAR) modeling. Three main working mechanisms (HAT, SETPT and SPLET) are explored in four micro-environments (gas-phase, benzene, water and ethanol). Computed thermodynamics parameters (BDE, IP, PDE, PA and ETE) are compared with the experimental radical scavenging activities against DPPH•. Available theoretical and experimental investigations have demonstrated that the extended delocalization and intra-molecular hydrogen bonds are the two main contributions to the stability of the radicals. The C = O or C = C in COOH, COOR, C = CCOOH and C = CCOOR groups, and orthodiphenolic functionalities are shown to favorably stabilize the specific radical species to enhance the radical scavenging activities, while the presence of the single OH in the ortho position of the COOH group disfavors the activities. HAT is the thermodynamically preferred mechanism in the gas phase and benzene, whereas SPLET in water and ethanol. Furthermore, our QSAR models robustly represent the structure-activity relationships of these explored compounds in polar media.
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Affiliation(s)
- Yuzhen Chen
- School of Mathematical Sciences, Henan Institute of Science and Technology, Xinxiang 453003, P. R. China
| | - Huizhi Xiao
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, School of Bioengineering, Chongqing University, Chongqing 400044, P. R. China
| | - Jie Zheng
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, Ohio 44325, United States of America
| | - Guizhao Liang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, School of Bioengineering, Chongqing University, Chongqing 400044, P. R. China
- * E-mail:
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33
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Mazzone G, Malaj N, Galano A, Russo N, Toscano M. Antioxidant properties of several coumarin–chalcone hybrids from theoretical insights. RSC Adv 2015. [DOI: 10.1039/c4ra11733f] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Structural features, antioxidant ability and UV-Vis absorption properties of a series of coumarin–chalcone derivatives have been elucidated by means of density functional theory.
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Affiliation(s)
- Gloria Mazzone
- Dipartimento di Chimica e Tecnologie Chimiche
- Università della Calabria
- I-87036 Arcavacata di Rende
- Italy
- Dipartimento di ingegneria Informatica
| | - Naim Malaj
- Dipartimento di Chimica e Tecnologie Chimiche
- Università della Calabria
- I-87036 Arcavacata di Rende
- Italy
- Dipartimento di Scienze Ambiente e Territorio e Scienze della Terra
| | - Annia Galano
- Departamento de Quimica
- Division de Ciencias Basicas e Ingenieria
- Universidad Autonoma Metropolitana-Iztapalapa
- Mexico, D.F
- Mexico
| | - Nino Russo
- Dipartimento di Chimica e Tecnologie Chimiche
- Università della Calabria
- I-87036 Arcavacata di Rende
- Italy
| | - Marirosa Toscano
- Dipartimento di Chimica e Tecnologie Chimiche
- Università della Calabria
- I-87036 Arcavacata di Rende
- Italy
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34
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Fifen JJ, Dhaouadi Z, Nsangou M. Revision of the Thermodynamics of the Proton in Gas Phase. J Phys Chem A 2014; 118:11090-7. [DOI: 10.1021/jp508968z] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jean Jules Fifen
- Department
of Physics, Faculty of Science, The University of Ngaoundere, P.O. Box 454, Ngaoundere, Cameroon
| | - Zoubeida Dhaouadi
- Laboratoire
de Spectroscopie Atomique et Moléculaire, Faculté des
Sciences de Tunis, Université de Tunis El Manar, Campus Universitaire 1060, Tunis, Tunisia
| | - Mama Nsangou
- University of Maroua, P.O. Box, 46, Maroua, Cameroon
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35
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Fotschki B, Milala J, Jurgoński A, Karlińska E, Zduńczyk Z, Juśkiewicz J. Strawberry ellagitannins thwarted the positive effects of dietary fructooligosaccharides in rat cecum. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:5871-5880. [PMID: 24894695 DOI: 10.1021/jf405612a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Forty-eight male Wistar rats were fed diets containing low (0.051% of diet) or high (0.153% of diet) levels of an ellagitannin-rich (ET) strawberry extract with dietary fructooligosaccharides (FOS) or cellulose (CEL) for 4 weeks. The in vivo study demonstrated that some positive changes in the cecal metabolism resulting from the ingestion of a diet enriched only with FOS were completely or slightly suppressed by the dietary ET. In particular, the pH value (7.21 vs 7.36), short-chain fatty acid production (41.2 vs 30.0 μmol/100g BW), and β-glucuronidase activity (20.2 vs 15.7 μmol/h/g) in the cecum of rats fed with FOS were affected upon the addition of the ET extract. Dietary FOS caused higher metabolism of the tested ET strawberry extract in the gastrointestinal tract of rats. Moreover, the systemic effect of the supplements when consumed together showed undesired serum HDL-cholesterol decrease (0.78 vs 1.02 mmol/L in the treatment with FOS only).
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Affiliation(s)
- Bartosz Fotschki
- Division of Food Science, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences , Olsztyn, Poland
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36
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Galano A, Francisco Marquez M, Pérez-González A. Ellagic acid: an unusually versatile protector against oxidative stress. Chem Res Toxicol 2014; 27:904-18. [PMID: 24697747 DOI: 10.1021/tx500065y] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Several aspects related to the antioxidant activity of ellagic acid were investigated using the density functional theory. It was found that this compound is unusually versatile for protecting against the toxic effects caused by oxidative stress. Ellagic acid, in aqueous solution at physiological pH, is able of deactivating a wide variety of free radicals, which is a desirable capability since in biological systems, these species are diverse. Under such conditions, the ellagic acid anion is proposed as the key species for its protective effects. It is predicted to be efficiently and continuously regenerated after scavenging two free radicals per cycle. This is an advantageous and unusual behavior that contributes to increase its antioxidant activity at low concentrations. In addition, the ellagic acid metabolites are also capable of efficiently scavenging a wide variety of free radicals. Accordingly, it is proposed that the ellagic acid efficiency for that purpose is not reduced after being metabolized. On the contrary, it provides continuous protection against oxidative stress through a free radical scavenging cascade. This is an uncommon and beneficial behavior, which makes ellagic acid particularly valuable to that purpose. After deprotonation, ellagic acid is also capable of chelating copper, in a concentration dependent way, decreasing the free radical production. In summary, ellagic acid is proposed to be an efficient multiple-function protector against oxidative stress.
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Affiliation(s)
- Annia Galano
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa , San Rafael Atlixco 186, Col. Vicentina, Iztapalapa, C.P. 09340 México D. F., México
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37
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Chen YJ, Deng N, Hu B, Wang Y, He JB. Thin layer-based spectral and electrophoretic study of electro-oxidation of solid ellagic acid. J Phys Chem B 2014; 118:2001-8. [PMID: 24495249 DOI: 10.1021/jp4097259] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Acquisition of data from both in situ spectroscopy detection and online chromatography-like separation is important for studying complex electrochemical reactions. The present work provides an example of combination of thin-layer spectral and electrophoretic electrochemistry, both based on thin-layer electrolysis. Two thin-layer electrochemical cells were used to investigate the electro-oxidation of solid ellagic acid at different potentials, in acidic, physiological, and alkaline buffer media. UV-vis spectra and cyclic voltabsorptograms of the oxidation products were recorded in situ without interference from the solid reactant. Four oxidation products, depending upon the buffer pH and the applied potential, were separated and detected by electrophoretic electrochemistry. The major products possess redox stability, possibly with a diquinonemethide structure. The minor product is considered as an o-quinone derivative with a lactone-ring-opening, which can be reduced or further oxidized at appropriate potentials. A consecutive-parallel reaction mechanism is proposed for the formation of four products of ellagic acid in different pH media, which enriches the knowledge about the oxidation pathway and antioxidant property of this biologically active polyphenol compound.
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Affiliation(s)
- Yu-Jiao Chen
- Anhui Key Lab of Controllable Chemical Reaction & Material Chemical Engineering, School of Chemical Engineering, Hefei University of Technology , Hefei 230009, China
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