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Bennici G, Almahasheer H, Alghrably M, Valensin D, Kola A, Kokotidou C, Lachowicz J, Jaremko M. Mitigating diabetes associated with reactive oxygen species (ROS) and protein aggregation through pharmacological interventions. RSC Adv 2024; 14:17448-17460. [PMID: 38813124 PMCID: PMC11135279 DOI: 10.1039/d4ra02349h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Accepted: 05/22/2024] [Indexed: 05/31/2024] Open
Abstract
Diabetes mellitus, a complex metabolic disorder, presents a growing global health challenge. In 2021, there were 529 million diabetics worldwide. At the super-regional level, Oceania, the Middle East, and North Africa had the highest age-standardized rates. The majority of cases of diabetes in 2021 (>90.0%) were type 2 diabetes, which is largely indicative of the prevalence of diabetes in general, particularly in older adults (K. L. Ong, et al., Global, regional, and national burden of diabetes from 1990 to 2021, with projections of prevalence to 2050: a systematic analysis for the Global Burden of Disease Study 2021, Lancet, 2023, 402(10397), 203-234). Nowadays, slowing the progression of diabetic complications is the only effective way to manage diabetes with the available therapeutic options. However, novel biomarkers and treatments are urgently needed to control cytokine secretion, advanced glycation end products (AGEs) production, vascular inflammatory effects, and cellular death. Emerging research has highlighted the intricate interplay between reactive oxygen species (ROS) and protein aggregation in the pathogenesis of diabetes. In this scenario, the main aim of this paper is to provide a comprehensive review of the current understanding of the molecular mechanisms underlying ROS-induced cellular damage and protein aggregation, specifically focusing on their contribution to diabetes development. The role of ROS as key mediators of oxidative stress in diabetes is discussed, emphasizing their impact on cellular components and signaling. Additionally, the involvement of protein aggregation in impairing cellular function and insulin signaling is explored. The synergistic effects of ROS and protein aggregation in promoting β-cell dysfunction and insulin resistance are examined, shedding light on potential targets for therapeutic intervention.
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Affiliation(s)
- Giulia Bennici
- Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
| | - Hanan Almahasheer
- Department of Biology, College of Science, Imam Abdulrahman Bin Faisal University (IAU) Dammam 31441-1982 Saudi Arabia
| | - Mawadda Alghrably
- Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
| | - Daniela Valensin
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena Via Aldo Moro 2 53100 Siena Italy
| | - Arian Kola
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena Via Aldo Moro 2 53100 Siena Italy
| | - Chrysoula Kokotidou
- Department of Materials Science and Technology, University of Crete 70013 Heraklion Crete Greece
- Institute of Electronic Structure and Laser (IESL) FORTH 70013 Heraklion Crete Greece
| | - Joanna Lachowicz
- Department of Population Health, Division of Environmental Health and Occupational Medicine, Wroclaw Medical University Mikulicza-Radeckiego 7 Wroclaw PL 50-368 Poland
| | - Mariusz Jaremko
- Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
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Chkirate K, Ati GA, Karrouchi K, Fettach S, Chakchak H, Mague JT, Radi S, Adarsh NN, Abbes Faouzi ME, Essassi EM, Garcia Y. Cu II Pyrazolyl-Benzimidazole Dinuclear Complexes with Remarkable Antioxidant Activity. Chembiochem 2023; 24:e202300331. [PMID: 37548339 DOI: 10.1002/cbic.202300331] [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: 04/30/2023] [Revised: 08/05/2023] [Accepted: 08/07/2023] [Indexed: 08/08/2023]
Abstract
Three dinuclear coordination complexes generated from 1-n-butyl-2-((5-methyl-1H-pyrazole-3-yl)methyl)-1H-benzimidazole (L), have been synthesized and characterized spectroscopically and structurally by single crystal X-ray diffraction analysis. Reaction with iron(II) chloride and then copper(II) nitrate led to a co-crystal containing 78 % of [Cu(NO3 )(μ-Cl)(L')]2 (C1 ) and 22 % of [Cu(NO3 )(μ-NO3 )(L')]2 (C2 ), where L was oxidized to a new ligand L' . A mechanism is provided. Reaction with copper chloride led to the dinuclear complex [Cu(Cl)(μ-Cl)(L)]2 (C3 ). The presence of N-H⋅⋅⋅O and C-H⋅⋅⋅O intermolecular interactions in the crystal structure of C1 and C2 , and C-H⋅⋅⋅N and C-H⋅⋅⋅Cl hydrogen bonding in the crystal structure of C3 led to supramolecular structures that were confirmed by Hirshfeld surface analysis. The ligands and their complexes were tested for free radical scavenging activity and ferric reducing antioxidant power. The complex C1 /C2 shows remarkable antioxidant activities as compared to the ligand L and reference compounds.
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Affiliation(s)
- Karim Chkirate
- Laboratory of Heterocyclic Organic Chemistry URAC 21, Pharmacochemistry Competence Center, Av. Ibn Battouta, BP 1014, Faculty of Sciences, Mohammed V University in Rabat, Rabat, 10010, Morocco
| | - Gamal Al Ati
- Laboratory of Heterocyclic Organic Chemistry URAC 21, Pharmacochemistry Competence Center, Av. Ibn Battouta, BP 1014, Faculty of Sciences, Mohammed V University in Rabat, Rabat, 10010, Morocco
| | - Khalid Karrouchi
- Laboratory of Analytical Chemistry and Bromatology, Faculty of Medicine and Pharmacy, Mohammed V University in Rabat (Morocco)
| | - Saad Fettach
- Laboratory of Pharmacology and Toxicology, Biopharmaceutical and Toxicological Analysis Research Team, Faculty of Medicine and Pharmacy, Mohammed V University of Rabat (Morocco)
| | - Hind Chakchak
- Unités d'Appui Techniques À la Recherche Scientifique (UATRS), Centre National Pour la Recherche Scientifique et Technique (CNRST), Rabat, 10000, Morocco
| | - Joel T Mague
- Department of Chemistry, Tulane University, New Orleans, LA 70118, USA
| | - Smaail Radi
- LCAE, Département de Chimie, Faculté des Sciences, Université Mohamed Premier, B. P. 524, 60000, Oujda, Morocco
| | - N N Adarsh
- Department of Chemistry & Biomolecular Science, Clarkson University, Potsdam, NY 13699, USA
| | - My El Abbes Faouzi
- Laboratory of Pharmacology and Toxicology, Biopharmaceutical and Toxicological Analysis Research Team, Faculty of Medicine and Pharmacy, Mohammed V University of Rabat (Morocco)
| | - El Mokhtar Essassi
- Laboratory of Heterocyclic Organic Chemistry URAC 21, Pharmacochemistry Competence Center, Av. Ibn Battouta, BP 1014, Faculty of Sciences, Mohammed V University in Rabat, Rabat, 10010, Morocco
| | - Yann Garcia
- Institute of Condensed Matter and Nanosciences, Molecular Chemistry, Materials and Catalysis (IMCN/MOST), Université catholique de Louvain, Place L. Pasteur 1, 1348, Louvain-la-Neuve, Belgium
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Feng N, Feng Y, Tan J, Zhou C, Xu J, Chen Y, Xiao J, He Y, Wang C, Zhou M, Wu Q. Inhibition of advance glycation end products formation, gastrointestinal digestion, absorption and toxicity: A comprehensive review. Int J Biol Macromol 2023; 249:125814. [PMID: 37451379 DOI: 10.1016/j.ijbiomac.2023.125814] [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: 01/17/2023] [Revised: 06/18/2023] [Accepted: 07/11/2023] [Indexed: 07/18/2023]
Abstract
Advanced glycation end-products (AGEs) are the final products of the non-enzymatic interaction between reducing sugars and amino groups in proteins, lipids and nucleic acids. In numerous diseases, such as diabetes, neuropathy, atherosclerosis, aging, nephropathy, retinopathy, and chronic renal illness, accumulation of AGEs has been proposed as a pathogenic mechanism of inflammation, oxidative stress, and structural tissue damage leading to chronic vascular issues. Current studies on the inhibition of AGEs mainly focused on food processing. However, there are few studies on the inhibition of AGEs during digestion, absorption and metabolism although there are still plenty of AGEs in our body with our daily diet. This review comprehensively expounded AGEs inhibition mechanism based on the whole process of digestion, absorption and metabolism by polyphenols, amino acids, hydrophilic colloid, carnosine and other new anti-glycation agents. Our study will provide a ground-breaking perspective on mediation or inhibition AGEs.
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Affiliation(s)
- Nianjie Feng
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Hubei Key Laboratory of Industrial Microbiology, Key Laboratory of Fermentation Engineering (Ministry of Education), National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Hubei University of Technology, Wuhan, Hubei, 430068, China
| | - Yingna Feng
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Hubei Key Laboratory of Industrial Microbiology, Key Laboratory of Fermentation Engineering (Ministry of Education), National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Hubei University of Technology, Wuhan, Hubei, 430068, China
| | - Jiangying Tan
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Hubei Key Laboratory of Industrial Microbiology, Key Laboratory of Fermentation Engineering (Ministry of Education), National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Hubei University of Technology, Wuhan, Hubei, 430068, China
| | - Chen Zhou
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Hubei Key Laboratory of Industrial Microbiology, Key Laboratory of Fermentation Engineering (Ministry of Education), National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Hubei University of Technology, Wuhan, Hubei, 430068, China
| | - Jianhua Xu
- Pinyuan (Suizhou) Modern Agriculture Development Co., LTD., Suizhou, Hubei 441300, China
| | - Yashu Chen
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Oil crops and Lipids Process Technology National & Local Joint Engineering Laboratory, Key Laboratory of Oilseeds Processing, Ministry of Agriculture, Hubei Key Laboratory of Lipid Chemistry and Nutrition, Wuhan, China
| | - Juan Xiao
- State Key Laboratory of Marine Resource Utilization in South China Sea, Ministry of Education, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Engineering Research Center of Utilization of Tropical Polysaccharide Resources, School of Food Science and Engineering, Hainan University, Haikou, China
| | - Yi He
- National R&D Center for Se-rich Agricultural Products Processing, Hubei Engineering Research Center for Deep Processing of Green Se-rich Agricultural Products, School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China
| | - Chao Wang
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Hubei Key Laboratory of Industrial Microbiology, Key Laboratory of Fermentation Engineering (Ministry of Education), National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Hubei University of Technology, Wuhan, Hubei, 430068, China
| | - Mengzhou Zhou
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Hubei Key Laboratory of Industrial Microbiology, Key Laboratory of Fermentation Engineering (Ministry of Education), National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Hubei University of Technology, Wuhan, Hubei, 430068, China.
| | - Qian Wu
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Hubei Key Laboratory of Industrial Microbiology, Key Laboratory of Fermentation Engineering (Ministry of Education), National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Hubei University of Technology, Wuhan, Hubei, 430068, China.
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Jevtovic V, Alhar MSO, Milenković D, Marković Z, Dimitrić Marković J, Dimić D. Synthesis, Structural Characterization, Cytotoxicity, and Protein/DNA Binding Properties of Pyridoxylidene-Aminoguanidine-Metal (Fe, Co, Zn, Cu) Complexes. Int J Mol Sci 2023; 24:14745. [PMID: 37834192 PMCID: PMC10573062 DOI: 10.3390/ijms241914745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/26/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023] Open
Abstract
Pyridoxylidene-aminoguanidine (PLAG) and its transition metal complexes are biologically active compounds with interesting properties. In this contribution, three new metal-PLAG complexes, Zn(PLAG)(SO4)(H2O)].∙H2O (Zn-PLAG), [Co(PLAG)2]SO4∙2H2O (Co-PLAG), and [Fe(PLAG)2]SO4∙2H2O) (Fe-PLAG), were synthetized and characterized by the X-ray crystallography. The intermolecular interactions governing the stability of crystal structure were compared to those of Cu(PLAG)(NCS)2 (Cu-PLAG) within Hirshfeld surface analysis. The structures were optimized at B3LYP/6-31+G(d,p)(H,C,N,O,S)/LanL2DZ (Fe,Co,Zn,Cu), and stability was assessed through Natural Bond Orbital Theory and Quantum Theory of Atoms in Molecules. Special emphasis was put on investigating the ligand's stability and reactivity. The binding of these compounds to Bovine and Human serum albumin was investigated by spectrofluorometric titration. The importance of complex geometry and various ligands for protein binding was shown. These results were complemented by the molecular docking study to elucidate the most important interactions. The thermodynamic parameters of the binding process were determined. The binding to DNA, as one of the main pathways in the cell death cycle, was analyzed by molecular docking. The cytotoxicity was determined towards HCT116, A375, MCF-7, and A2780 cell lines. The most active compound was Cu-PLAG due to the presence of PLAG and two thiocyanate ligands.
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Affiliation(s)
- Violeta Jevtovic
- Department of Chemistry, College of Science, University Ha’il, Ha’il 81451, Saudi Arabia
| | | | - Dejan Milenković
- Department of Science, Institute for Information Technologies, University of Kragujevac, Jovana Cvijića bb, 34000 Kragujevac, Serbia
| | - Zoran Marković
- Department of Science, Institute for Information Technologies, University of Kragujevac, Jovana Cvijića bb, 34000 Kragujevac, Serbia
| | | | - Dušan Dimić
- Faculty of Physical Chemistry, University of Belgrade, Studentski Trg 12–16, 11000 Belgrade, Serbia
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Walton-Raaby M, Floen T, García-Díez G, Mora-Diez N. Calculating the Aqueous pK a of Phenols: Predictions for Antioxidants and Cannabinoids. Antioxidants (Basel) 2023; 12:1420. [PMID: 37507958 PMCID: PMC10376140 DOI: 10.3390/antiox12071420] [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: 05/30/2023] [Revised: 06/30/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023] Open
Abstract
We aim to develop a theoretical methodology for the accurate aqueous pKa prediction of structurally complex phenolic antioxidants and cannabinoids. In this study, five functionals (M06-2X, B3LYP, BHandHLYP, PBE0, and TPSS) and two solvent models (SMD and PCM) were combined with the 6-311++G(d,p) basis set to predict pKa values for twenty structurally simple phenols. None of the direct calculations produced good results. However, the correlations between the calculated Gibbs energy difference of each acid and its conjugate base, ΔGaq(BA)°=ΔGaqA-°-ΔGaq(HA)°, and the experimental aqueous pKa values had superior predictive accuracy, which was also tested relative to an independent set of ten molecules of which six were structurally complex phenols. New correlations were built with twenty-seven phenols (including the phenols with experimental pKa values from the test set), which were used to make predictions. The best correlation equations used the PCM method and produced mean absolute errors of 0.26-0.27 pKa units and R2 values of 0.957-0.960. The average range of predictions for the potential antioxidants (cannabinoids) was 0.15 (0.25) pKa units, which indicates good agreement between our methodologies. The new correlation equations could be used to make pKa predictions for other phenols in water and potentially in other solvents where they might be more soluble.
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Affiliation(s)
- Max Walton-Raaby
- Department of Chemistry, Thompson Rivers University, Kamloops, BC V2C 0C8, Canada
- Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Tyler Floen
- Department of Chemistry, Thompson Rivers University, Kamloops, BC V2C 0C8, Canada
| | | | - Nelaine Mora-Diez
- Department of Chemistry, Thompson Rivers University, Kamloops, BC V2C 0C8, Canada
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Sumi M, Nevaditha N, Sindhu Kumari B. Synthesis, structural evaluation, antioxidant, DNA cleavage, anticancer activities and molecular docking study of metal complexes of 2-amino thiophene derivative. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Marimuthu B, Michael S, Jeyaraman P, Arulanandam X. Synthesis, spectroscopic, in vitro, in silico, and in vivo studies of binuclear Cu (II), Ni (II), Ru (II), and Zn (II) complexes with tetradentate Schiff base ligand. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Samuel Michael
- Research Department of Chemistry VHNSN College Virudhunagar India
| | - Porkodi Jeyaraman
- Research Department of Chemistry The Standard Fireworks Rajaratnam College for Women Sivakasi India
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Truong DH, Ngo TC, Nhung NTA, Quang DT, Nguyen TLA, Khiri D, Taamalli S, Louis F, El Bakali A, Dao DQ. New insights into the competition between antioxidant activities and pro-oxidant risks of rosmarinic acid. RSC Adv 2022; 12:1499-1514. [PMID: 35425185 PMCID: PMC8978883 DOI: 10.1039/d1ra07599c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 12/11/2021] [Indexed: 12/18/2022] Open
Abstract
Direct and indirect antioxidant activities of rosmarinic acid (RA) based on HOO˙/CH3OO˙ radical scavenging and Fe(iii)/Fe(ii) ion chelation were theoretically studied using density functional theory at the M05-2X/6-311++G(2df,2p) level of theory. First, four antioxidant mechanisms including hydrogen atom transfer (HAT), radical adduct formation (RAF), proton loss (PL) and single electron transfer (SET) were investigated in water and pentyl ethanoate (PEA) phases. Regarding the free radical scavenging mechanism, HAT plays a decisive role with overall rate coefficients of 1.84 × 103 M-1 s-1 (HOO˙) and 4.49 × 103 M-1 s-1 (CH3OO˙) in water. In contrast to PL, RAF and especially SET processes, the HAT reaction in PEA is slightly more favorable than that in water. Second, the [Fe(iii)(H2O)6]3+ and [Fe(ii)(H2O)6]2+ ion chelating processes in an aqueous phase are both favorable and spontaneous especially at the O5, site-1, and site-2 positions with large negative Δr G 0 values and great formation constant K f. Finally, the pro-oxidant risk of RA- was also considered via the Fe(iii)-to-Fe(ii) complex reduction process, which may initiate Fenton-like reactions forming reactive HO˙ radicals. As a result, RA- does not enhance the reduction process when ascorbate anions are present as reducing agents, whereas the pro-oxidant risk becomes remarkable when superoxide anions are found. The results encourage further attempts to verify the speculation using more powerful research implementations of the antioxidant activities of rosmarinic acid in relationship with its possible pro-oxidant risks.
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Affiliation(s)
- Dinh Hieu Truong
- Institute of Research and Development, Duy Tan University Da Nang 550000 Vietnam
- Faculty of Natural Sciences, Duy Tan University Da Nang 550000 Vietnam
| | - Thi Chinh Ngo
- Institute of Research and Development, Duy Tan University Da Nang 550000 Vietnam
- Faculty of Natural Sciences, Duy Tan University Da Nang 550000 Vietnam
| | - Nguyen Thi Ai Nhung
- Department of Chemistry, University of Sciences, Hue University Hue 530000 Vietnam
| | - Duong Tuan Quang
- Department of Chemistry, University of Sciences, Hue University Hue 530000 Vietnam
| | - Thi Le Anh Nguyen
- Institute of Research and Development, Duy Tan University Da Nang 550000 Vietnam
- Faculty of Natural Sciences, Duy Tan University Da Nang 550000 Vietnam
| | - Dorra Khiri
- Department of Chemistry, University of Education, Hue University Hue 530000 Vietnam
| | - Sonia Taamalli
- Department of Chemistry, University of Education, Hue University Hue 530000 Vietnam
| | - Florent Louis
- Department of Chemistry, University of Education, Hue University Hue 530000 Vietnam
| | | | - Duy Quang Dao
- Institute of Research and Development, Duy Tan University Da Nang 550000 Vietnam
- Faculty of Natural Sciences, Duy Tan University Da Nang 550000 Vietnam
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Astakhov AV, Tarasova EV, Chernysheva AV, Rybakov VB, Starikova ZA, Chernyshev VM. Tautomerism and basicity of carboxylic acid guanyl hydrazides (acylaminoguanidines). Russ Chem Bull 2021. [DOI: 10.1007/s11172-021-3246-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Nguyen TLA, Doan THN, Truong DH, Ai Nhung NT, Quang DT, Khiri D, Taamalli S, Louis F, El Bakali A, Dao DQ. Antioxidant and UV-radiation absorption activity of aaptamine derivatives - potential application for natural organic sunscreens. RSC Adv 2021; 11:21433-21446. [PMID: 35478841 PMCID: PMC9034140 DOI: 10.1039/d1ra04146k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 06/11/2021] [Indexed: 12/14/2022] Open
Abstract
Antioxidant and UV absorption activities of three aaptamine derivatives including piperidine[3,2-b]demethyl(oxy)aaptamine (C1), 9-amino-2-ethoxy-8-methoxy-3H-benzo[de][1,6]naphthyridine-3-one (C2), and 2-(sec-butyl)-7,8-dimethoxybenzo[de]imidazo[4,5,1-ij][1,6]-naphthyridin-10(9H)-one (C3) were theoretically studied by density functional theory (DFT). Direct antioxidant activities of C1-C3 were firstly evaluated via their intrinsic thermochemical properties and the radical scavenging activity of the potential antioxidants with the HOO˙/HO˙ radicals via four mechanisms, including: hydrogen atom transfer (HAT), single electron transfer (SET), proton loss (PL) and radical adduct formation (RAF). Kinetic calculation reveals that HOO˙ scavenging in water occurs via HAT mechanism with C1 (k app, 7.13 × 106 M-1 s-1) while RAF is more dominant with C2 (k app, 1.40 × 105 M-1 s-1) and C3 (k app, 2.90 × 105 M-1 s-1). Antioxidant activity of aaptamine derivatives can be classified as C1 > C3 > C2. Indirect antioxidant properties based on Cu(i) and Cu(ii) ions chelating activity were also investigated in aqueous phase. All three studied compounds show spontaneous and favorable Cu(i) ion chelating activity with ΔG 0 being -15.4, -13.7, and -15.7 kcal mol-1, whereas ΔG 0 for Cu(ii) chelation are -10.4, -10.8, and -2.2 kcal mol-1 for C1, C2 and C3, respectively. In addition, all compounds show UVA and UVB absorption; in which the excitations are determined mostly as π-π* transition. Overall, the results suggest the potential applications of the aaptamines in pharmaceutics and cosmetics, i.e. as a sunscreen and antioxidant ingredient.
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Affiliation(s)
- Thi Le Anh Nguyen
- Institute of Research and Development, Duy Tan University Da Nang 550000 Vietnam
- Faculty of Natural Sciences, Duy Tan University Da Nang 550000 Vietnam
| | - Thi Hoai Nam Doan
- Department of Chemistry, Danang University of Science and Technology, The University of Danang Da Nang 550000 Vietnam
| | - Dinh Hieu Truong
- Institute of Research and Development, Duy Tan University Da Nang 550000 Vietnam
- Faculty of Natural Sciences, Duy Tan University Da Nang 550000 Vietnam
| | - Nguyen Thi Ai Nhung
- Department of Chemistry, University of Sciences, Hue University Hue 530000 Vietnam
| | - Duong Tuan Quang
- Department of Chemistry, University of Education, Hue University Hue 530000 Vietnam
| | - Dorra Khiri
- Université de Lille, CNRS, UMR 8522, PC2A - PhysicoChimie des Processus de Combustion et de l'Atmosphère 59000 Lille France
| | - Sonia Taamalli
- Université de Lille, CNRS, UMR 8522, PC2A - PhysicoChimie des Processus de Combustion et de l'Atmosphère 59000 Lille France
| | - Florent Louis
- Université de Lille, CNRS, UMR 8522, PC2A - PhysicoChimie des Processus de Combustion et de l'Atmosphère 59000 Lille France
| | - Abderrahman El Bakali
- Université de Lille, CNRS, UMR 8522, PC2A - PhysicoChimie des Processus de Combustion et de l'Atmosphère 59000 Lille France
| | - Duy Quang Dao
- Institute of Research and Development, Duy Tan University Da Nang 550000 Vietnam
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Complexes of Copper and Iron with Pyridoxamine, Ascorbic Acid, and a Model Amadori Compound: Exploring Pyridoxamine's Secondary Antioxidant Activity. Antioxidants (Basel) 2021; 10:antiox10020208. [PMID: 33535448 PMCID: PMC7912584 DOI: 10.3390/antiox10020208] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 01/23/2021] [Accepted: 01/26/2021] [Indexed: 12/28/2022] Open
Abstract
The thermodynamic stability of 11 complexes of Cu(II) and 26 complexes of Fe(III) is studied, comprising the ligands pyridoxamine (PM), ascorbic acid (ASC), and a model Amadori compound (AMD). In addition, the secondary antioxidant activity of PM is analyzed when chelating both Cu(II) and Fe(III), relative to the rate constant of the first step of the Haber-Weiss cycle, in the presence of the superoxide radical anion (O2•-) or ascorbate (ASC-). Calculations are performed at the M05(SMD)/6-311+G(d,p) level of theory. The aqueous environment is modeled by making use of the SMD solvation method in all calculations. This level of theory accurately reproduces the experimental data available. When put in perspective with the stability of various complexes of aminoguanidine (AG) (which we have previously studied), the following stability trends can be found for the Cu(II) and Fe(III) complexes, respectively: ASC < AG < AMD < PM and AG < ASC < AMD < PM. The most stable complex of Cu(II) with PM (with two bidentate ligands) presents a ΔGf0 value of -35.8 kcal/mol, whereas the Fe(III) complex with the highest stability (with three bidentate ligands) possesses a ΔGf0 of -58.9 kcal/mol. These complexes can significantly reduce the rate constant of the first step of the Haber-Weiss cycle with both O2•- and ASC-. In the case of the copper-containing reaction, the rates are reduced up to 9.70 × 103 and 4.09 × 1013 times, respectively. With iron, the rates become 1.78 × 103 and 4.45 × 1015 times smaller, respectively. Thus, PM presents significant secondary antioxidant activity since it is able to inhibit the production of ·OH radicals. This work concludes a series of studies on secondary antioxidant activity and allows potentially new glycation inhibitors to be investigated and compared relative to both PM and AG.
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García-Díez G, Mora-Diez N. Theoretical Study of the Iron Complexes with Aminoguanidine: Investigating Secondary Antioxidant Activity. Antioxidants (Basel) 2020; 9:E756. [PMID: 32824195 PMCID: PMC7463863 DOI: 10.3390/antiox9080756] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 08/02/2020] [Accepted: 08/11/2020] [Indexed: 12/27/2022] Open
Abstract
A thorough analysis of the thermodynamic stability of various complexes of aminoguanidine (AG) with Fe(III) at a physiological pH is presented. Moreover, the secondary antioxidant activity of AG is studied with respect to its kinetic role in the Fe(III) reduction to Fe(II) when reacting with the superoxide radical anion or ascorbate. Calculations are performed at the M05(SMD)/6-311+G(d,p) level of theory. Solvent effects (water) are taken into account in both geometry optimizations and frequency calculations employing the SMD solvation method. Even though the results of this study show that AG can form an extensive number of stable complexes with Fe(III), none of these can reduce the rate constant of the initial step of the Haber-Weiss cycle when the reducing agent is O2•-. However, when the reductant is the ascorbate anion, AG is capable of reducing the rate constant of this reaction significantly, to the point of inhibiting the production of •OH radicals. In fact, the most stable complex of Fe(III) with AG, having a ∆Gf° of -37.9 kcal/mol, can reduce the rate constant of this reaction by 7.9 × 105 times. Thus, AG possesses secondary antioxidant activity relative to the Fe(III)/Fe(II) reduction with ascorbate, but not with O2•-. Similar results have also been found for AG relative to the Cu(II)/Cu(I) reduction, in agreement with experimental results.
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Affiliation(s)
| | - Nelaine Mora-Diez
- Department of Chemistry, Thompson Rivers University, Kamloops, BC V2C 0C8, Canada;
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Monreal-Corona R, Biddlecombe J, Ippolito A, Mora-Diez N. Theoretical Study of the Iron Complexes with Lipoic and Dihydrolipoic Acids: Exploring Secondary Antioxidant Activity. Antioxidants (Basel) 2020; 9:E674. [PMID: 32731543 PMCID: PMC7465238 DOI: 10.3390/antiox9080674] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 07/24/2020] [Accepted: 07/25/2020] [Indexed: 12/19/2022] Open
Abstract
The thermodynamic stability of twenty-nine Fe(III) complexes with various deprotonated forms of lipoic (LA) and dihydrolipoic (DHLA) acids, with coordination numbers 4, 5 and 6, is studied at the M06(SMD)/6-31++G(d,p) level of theory in water under physiological pH conditions at 298.15 K. Even though the complexes with LA- are more stable than those with DHLA-, the most thermodynamically stable Fe(III) complexes involve DHLA2-. The twenty-four exergonic complexes are used to evaluate the secondary antioxidant activity of DHLA and LA relative to the Fe(III)/Fe(II) reduction by O2•- and ascorbate. Rate constants for the single-electron transfer (SET) reactions are calculated. The thermodynamic stability of the Fe(III) complexes does not fully correlate with the rate constant of their SET reactions, but more exergonic complexes usually exhibit smaller SET rate constants. Some Cu(II) complexes and their reduction to Cu(I) are also studied at the same level of theory for comparison. The Fe(III) complexes appear to be more stable than their Cu(II) counterparts. Relative to the Fe(III)/Fe(II) reduction with ascorbate, DHLA can fully inhibit the formation of •OH radicals, but not by reaction with O2•-. Relative to the Cu(II)/Cu(I) reduction with ascorbate, the effects of DHLA are moderate/high, and with O2•- they are minor. LA has minor to negligible inhibition effects in all the cases considered.
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Affiliation(s)
| | | | | | - Nelaine Mora-Diez
- Department of Chemistry, Thompson Rivers University, Kamloops, BC V2C 0C8, Canada; (R.M.-C.); (J.B.); (A.I.)
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