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Beyaoui A, Kaplan M, Saidi I, Jalouli M, Ceyhan Goren A, Halim Harrath A, Ben Jannet H. Phenolic Profile, Bioactivities and In Silico Analysis of the Trunk Bark of Acacia Cyanophylla Lindl. Chem Biodivers 2024; 21:e202401061. [PMID: 38963913 DOI: 10.1002/cbdv.202401061] [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: 04/28/2024] [Accepted: 05/23/2024] [Indexed: 07/06/2024]
Abstract
In the current investigation, total phenolics and flavonoids of the methanolic extract obtained from the trunk bark of Acacia cyanophylla Lindl. were quantified by LC-HRMS technique. DPPH and ABTS reagents were employed to assay the antioxidant potential. The anti-tyrosinase and anti-α-amylase potentials were also assayed. The findings revealed that thirteen polyphenolic compounds were detected in the methanolic extract with trans-taxifolin (23.2 g/kg), as the major constituent. A. cyanophylla extract displayed a higher activity with DPPH test (IC50=10.14±1.00 μg/mL) than with ABTS (IC50=15.27±2.09 μg/mL). The same extract also exhibited interesting α-amylase inhibitory action (IC50 value of 4.00±0.17 μg/mL). Moreover, methanolic trunk bark extract exerted strong anti-tyrosinase capacity with an IC50 of 5.12±0.41 μg/mL in comparison to kojic acid (IC50=10.22±0.85 μg/mL) used as positive control. The antioxidant, anti-tyrosinase and anti-α-amylase potentials of the methanolic extract of A. cyanophylla trunk bark were reinforced by in silico molecular docking analyses, which confirmed the results of the in vitro tests.
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Affiliation(s)
- Ahlem Beyaoui
- University of Monastir, Faculty of Science of Monastir, Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity (LR11ES39), Team: Medicinal Chemistry and Natural Products, Avenue of Environment, 5019, Monastir, Tunisia
| | - Muammer Kaplan
- TUBITAK Marmara Research Centre, Institute of Chemical Technology, 41470, Gebze, Kocaeli, Turkiye
| | - Ilyes Saidi
- University of Monastir, Faculty of Science of Monastir, Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity (LR11ES39), Team: Medicinal Chemistry and Natural Products, Avenue of Environment, 5019, Monastir, Tunisia
| | - Maroua Jalouli
- Department of Biology, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, 11623, Saudi Arabia
| | - Ahmet Ceyhan Goren
- Gebze Technical University, Faculty of Basic Sciences, Department of Chemistry, Gebze, Kocaeli, Turkiye
| | - Abdel Halim Harrath
- Department of Zoology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Hichem Ben Jannet
- University of Monastir, Faculty of Science of Monastir, Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity (LR11ES39), Team: Medicinal Chemistry and Natural Products, Avenue of Environment, 5019, Monastir, Tunisia
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2
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Chemam Y, Benayache S, Bouzina A, Marchioni E, Sekiou O, Bentoumi H, Zhao M, Bouslama Z, Aouf NE, Benayache F. Phytochemical on-line screening and in silico study of Helianthemum confertum: antioxidant activity, DFT, MD simulation, ADME/T analysis, and xanthine oxidase binding. RSC Adv 2024; 14:22209-22228. [PMID: 39010907 PMCID: PMC11247359 DOI: 10.1039/d4ra02540g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 06/11/2024] [Indexed: 07/17/2024] Open
Abstract
Seven components from the methanol extract of the aerial part of the endemic species Helianthemum confertum were isolated and identified for the first time. Investigating this species and its separated components chemical make-up and radical scavenging capacity, was the main goal. Using an online HPLC-ABTS˙+ test, ORAC, and TEAC assays, the free radical scavenging capacity of the ethyl acetate extract was assessed. The fractionation of these extracts by CC, TLC, and reverse-phase HPLC was guided by the collected data, which was corroborated by TEAC and ORAC assays. Molecular docking studies, DFT at the B3LYP level, and an examination of the ADME/T predictions of all compounds helped to further clarify the phytochemicals' antioxidant potential. Isolation and identification of all components were confirmed through spectroscopy, which revealed a mixture (50-50%) of para-hydroxybenzoic acid 1 and methyl gallate 2, protocatechuic acid 3, astragalin 4, trans-tiliroside 5, cis-tiliroside 6, contaminated by trans-tiliroside and 3-oxo-α-ionol-β-d-glucopyranoside 7, as well as two new compounds for the genus Helianthemum (2 and 7). With a focus on compounds 1, 2, 3, and 4, the results clearly showed that the extract and the compounds tested from this species had a high antioxidant capacity. Within the xanthine oxidase enzyme's pocket, all of the components tested showed strong and stable binding. In light of these findings, the xanthine oxidase/methyl gallate 2 complex was simulated using the Desmond module of the Schrodinger suite molecular dynamics (MD) for 100 ns. Substantially stable receptor-ligand complexes were observed following 1 ns of MD simulation.
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Affiliation(s)
- Yasmine Chemam
- Unité de Recherche Valorisation des Ressources Naturelles, Molécules Bioactives et Analyses Physicochimiques et Biologiques, Université Frères Mentouri Constantine 1, Route d'Aïn El Bey 25000 Constantine Algeria
- Chimie Analytique des Molécules Bioactives, Institut Pluridisciplinaire Hubert Curien (UMR 7178 CNRS/UDS) 74 route du Rhin 67400 Illkirch France
- Laboratory of Applied Organic Chemistry, Bioorganic Chemistry Group, Department of Chemistry, Sciences Faculty, Badji Mokhtar Annaba University Box 12 23000 Annaba Algeria
| | - Samir Benayache
- Unité de Recherche Valorisation des Ressources Naturelles, Molécules Bioactives et Analyses Physicochimiques et Biologiques, Université Frères Mentouri Constantine 1, Route d'Aïn El Bey 25000 Constantine Algeria
| | - Abdeslem Bouzina
- Laboratory of Applied Organic Chemistry, Bioorganic Chemistry Group, Department of Chemistry, Sciences Faculty, Badji Mokhtar Annaba University Box 12 23000 Annaba Algeria
| | - Eric Marchioni
- Chimie Analytique des Molécules Bioactives, Institut Pluridisciplinaire Hubert Curien (UMR 7178 CNRS/UDS) 74 route du Rhin 67400 Illkirch France
| | - Omar Sekiou
- Environmental Research Center Alzon Castle, Boughazi Said Street, PB 2024 Annaba 23000 Algeria
| | - Houria Bentoumi
- Laboratory of Applied Organic Chemistry, Bioorganic Chemistry Group, Department of Chemistry, Sciences Faculty, Badji Mokhtar Annaba University Box 12 23000 Annaba Algeria
| | - Minjie Zhao
- Chimie Analytique des Molécules Bioactives, Institut Pluridisciplinaire Hubert Curien (UMR 7178 CNRS/UDS) 74 route du Rhin 67400 Illkirch France
| | - Zihad Bouslama
- Environmental Research Center Alzon Castle, Boughazi Said Street, PB 2024 Annaba 23000 Algeria
| | - Nour-Eddine Aouf
- Laboratory of Applied Organic Chemistry, Bioorganic Chemistry Group, Department of Chemistry, Sciences Faculty, Badji Mokhtar Annaba University Box 12 23000 Annaba Algeria
| | - Fadila Benayache
- Unité de Recherche Valorisation des Ressources Naturelles, Molécules Bioactives et Analyses Physicochimiques et Biologiques, Université Frères Mentouri Constantine 1, Route d'Aïn El Bey 25000 Constantine Algeria
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Altunayar-Unsalan C, Unsalan O. Molecular Structure, Antioxidant Potential, and Pharmacokinetic Properties of Plant Flavonoid Blumeatin and Investigating Its Inhibition Mechanism on Xanthine Oxidase for Hyperuricemia by Molecular Modeling. ACS OMEGA 2024; 9:13284-13297. [PMID: 38524493 PMCID: PMC10956095 DOI: 10.1021/acsomega.3c10083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 02/22/2024] [Accepted: 02/27/2024] [Indexed: 03/26/2024]
Abstract
Hyperuricemia, which usually results in metabolic syndrome symptoms, is increasing rapidly all over the world and becoming a global public health issue. Xanthine oxidase (XO) is regarded as a key drug target for the treatment of this disease. Therefore, finding natural, nontoxic, and highly active XO inhibitors is quite important. To get insights into inhibitory potential toward XO and determine antioxidant action mechanism depending on the molecular structure, plant flavonoid blumeatin was investigated for the first time by Fourier transform infrared (FTIR) spectroscopy, density functional theory (DFT), ADME/Tox (absorption, distribution, metabolism, excretion, and toxicity) analysis, and molecular docking study. Theoretical findings indicated that blumeatin has high radical scavenging activity due to its noncoplanarity and over twisted torsion angle (-94.64°) with respect to its flavanone skeleton could explain that there might be a correlation between antioxidant activity and planarity of blumeatin. Based on the ADME/Tox analysis, it is determined that blumeatin has a high absorption profile in the human intestine (81.93%), and this plant flavonoid is not carcinogenic or mutagenic. A molecular docking study showed that Thr1010, Val1011, Phe914, and Ala1078 are the main amino acid residues participating in XO's interaction with blumeatin via hydrogen bonds.
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Affiliation(s)
- Cisem Altunayar-Unsalan
- Graduate
School of Natural and Applied Sciences, Ege University, 35100 Bornova, Izmir, Turkey
- Central
Research Testing and Analysis Laboratory Research and Application
Center, Ege University, 35100 Bornova, Izmir, Turkey
| | - Ozan Unsalan
- Department
of Physics, Faculty of Science, Ege University, 35100 Bornova, Izmir, Turkey
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Huang A, Hu A, Li L, Ma C, Yang T, Gao H, Zhu C, Cai Z, Qiu X, Xu J, Shen J, Zhong L, Chen G. Effect of Zn 2+ on emodin molecules studied by time-resolved fluorescence spectroscopy and quantum chemical calculations. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 289:122217. [PMID: 36529043 DOI: 10.1016/j.saa.2022.122217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/28/2022] [Accepted: 12/03/2022] [Indexed: 06/17/2023]
Abstract
Emodin is a natural drug for treating neurodegenerative diseases and plays a vital role in the mitigation of nerve damage. Metal ions can modify the drug properties of emodin, where Zn2+ can synergize with the emodin molecule and enhance the drug effect of emodin. Besides, complex changes can be observed in the fluorescence intensity and fluorescence lifetime of the emodin molecule as the concentration of Zn2+ increases. Herein, the synergistic effects of ligand structural in Zn(II)-Emodin complexes and the electronic effects of metal elements on the antioxidant properties of the complexes are discussed in detail based on UV-vis absorption spectroscopy, fluorescence spectroscopy, time-correlated single photon counting (TCSPC) technique and quantum chemical calculations at the B3LYP/6-31G(d) level. The experimental results confirm that Zn2+ can coordinate with the hydroxyl groups on the emodin to make the molecule structure more rigid, thus inhibiting the non-radiative processes such as high-frequency vibrations of the emodin molecule in solution. The suppression of non-radiative processes leads to an increase in the average fluorescence lifetime of the emodin molecule, and finally results in the enhanced fluorescence intensity. The chemical softness of Zn(II)-Emodin is then confirmed to be higher than that of emodin by Gaussian calculations, indicating its higher chemical reactivity and lower stability. The stronger electron donating ability of Zn(II)-Emodin compared to emodin may explain the higher antioxidant activity of Zn(II)-Emodin, which gives it a stronger pharmacological activity. The results of this study show that emodin can well complex with Zn2+ to remove excess Zn2+ in human body and the resulting complex has better antioxidant properties, which helps to understand the role of Zn2+ in drug-metal coordination and provides guidance for the design of new drugs.
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Affiliation(s)
- Anlan Huang
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Anqi Hu
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Lei Li
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Chaoqun Ma
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Taiqun Yang
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Hui Gao
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Chun Zhu
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Zicheng Cai
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Xiaoqian Qiu
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Jinzeng Xu
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Jialu Shen
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Lvyuan Zhong
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China
| | - Guoqing Chen
- School of Science, Jiangnan University, Lihu Avenue 1800, 214122 Wuxi, China; Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Lihu Avenue 1800, 214122 Wuxi, China.
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Anti–Zika Virus Activity and Isolation of Flavonoids from Ethanol Extracts of Curatella americana L. Leaves. Molecules 2023; 28:molecules28062546. [PMID: 36985517 PMCID: PMC10054362 DOI: 10.3390/molecules28062546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 02/23/2023] [Accepted: 03/06/2023] [Indexed: 03/16/2023] Open
Abstract
The ethnomedicinal plant Curatella americana L. (Dilleniaceae) is a common shrub in the Brazilian Cerrado, whose ethanolic extract showed significant in vitro anti–Zika virus activity by the MTT colorimetric method. Currently, there is no drug in clinical use specifically for the treatment of this virus; therefore, in this work, the antiviral and cytotoxic properties of the ethanolic extract, fractions, and compounds were evaluated. The ethanolic extract of the leaves showed no cytotoxicity for the human MRC-5 cell and was moderately cytotoxic for the Vero cell (CC50 161.5 ± 2.01 µg/mL). This extract inhibited the Zika virus multiplication cycle with an EC50 of 85.2 ± 1.65 µg/mL. This extract was fractionated using the liquid–liquid partition technique, and the ethyl acetate fraction showed significant activity against the Zika virus with an EC50 of 40.7 ± 2.33 µg/mL. From the ethyl acetate fraction, the flavonoids quercetin-3-O-hexosylgallate (1), quercetin-3-O-glucoside (2), and quercetin (5) were isolated, and in addition to these compounds, a mixture of quercetin-3-O-rhamnoside (3) and quercetin-3-O-arabinoside (4) was also obtained. The isolated compounds quercetin and quercetin-3-O-hexosylgallate inhibited the viral cytopathic effect at an EC50 of 18.6 ± 2.8 and 152.8 ± 2.0, respectively. Additionally, analyses by liquid chromatography coupled to a mass spectrometer allowed the identification of another 24 minor phenolic constituents present in the ethanolic extract and in the ethyl acetate fraction of this species.
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Structural Factors That Determine the Activity of the Xenobiotic Reductase B Enzyme from Pseudomonas putida on Nitroaromatic Compounds. Int J Mol Sci 2022; 24:ijms24010400. [PMID: 36613844 PMCID: PMC9820340 DOI: 10.3390/ijms24010400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 12/09/2022] [Accepted: 12/13/2022] [Indexed: 12/28/2022] Open
Abstract
Xenobiotic reductase B (XenB) catalyzes the reduction of the aromatic ring or nitro groups of nitroaromatic compounds with methyl, amino or hydroxyl radicals. This reaction is of biotechnological interest for bioremediation, the reuse of industrial waste or the activation of prodrugs. However, the structural factors that explain the binding of XenB to different substrates are unknown. Molecular dynamics simulations and quantum mechanical calculations were performed to identify the residues involved in the formation and stabilization of the enzyme/substrate complex and to explain the use of different substrates by this enzyme. Our results show that Tyr65 and Tyr335 residues stabilize the ligands through hydrophobic interactions mediated by the aromatic rings of these aminoacids. The higher XenB activity determined with the substrates 1,3,5-trinitrobenzene and 2,4,6-trinitrotoluene is consistent with the lower energy of the highest occupied molecular orbital (LUMO) orbitals and a lower energy of the homo orbital (LUMO), which favors electrophile and nucleophilic activity, respectively. The electrostatic potential maps of these compounds suggest that the bonding requires a large hydrophobic region in the aromatic ring, which is promoted by substituents in ortho and para positions. These results are consistent with experimental data and could be used to propose point mutations that allow this enzyme to process new molecules of biotechnological interest.
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Khan J, Sakib SA, Mahmud S, Khan Z, Islam MN, Sakib MA, Emran TB, Simal-Gandara J. Identification of potential phytochemicals from Citrus Limon against main protease of SARS-CoV-2: molecular docking, molecular dynamic simulations and quantum computations. J Biomol Struct Dyn 2022; 40:10741-10752. [PMID: 34278965 DOI: 10.1080/07391102.2021.1947893] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The outbreak of coronavirus disease (COVID-19) caused by a novel RNA virus emerged at the end of 2019. Most of the patient's symptoms are mild to moderate, and influenza, acute respiratory distress syndrome (ARDS) and multi-organ failure are common. The disease is mild to moderate in most patients and is reported in many cases such as pneumonia, ARDS and multi-organ dysfunction. This study's objective is to evaluate 25 natural compounds from Citrus limon (CL) used by comprehensive molecular docking, density functional theory (DFT) and molecular dynamics analysis against SARS-CoV-2 main protease (Mpro). Among all the experimental compounds, diosmetin has shown the best docking values against the Mpro of SARS-CoV-2 compared to the standard antiviral drug. In DFT calculations, the order associated with biochemical reactivity is as follows: eriodictoyl > quercetin > spinacetin > diosmetin > luteolin > apigenin, whereas the regions of oxygen and hydrogen atoms from the selected isolated compounds are appropriate for electrophilic and nucleophilic attacks, respectively. Also, HOMO-LUMO and global descriptors values indicated a promising result of these compounds. Moreover, a molecular dynamics simulation study revealed the stable conformation and binding pattern in a stimulating environment of natural compounds CL. Considering molecular docking, simulation, and DFT analysis of the selected compounds, notably eriodictoyl, quercetin, and diosmetin showed good potential against SARS-CoV-2 Mpro. Our in silico study revealed promising antiviral activity, which may be considered a potential key factor or a therapeutic target for COVID-19.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Jishan Khan
- Department of Pharmacy, International Islamic University Chittagong, Chittagong, Bangladesh
| | - Shahenur Alam Sakib
- Department of Theoretical and Computational Chemistry, University of Dhaka, Dhaka
| | - Shafi Mahmud
- Microbiology Laboratory, Bioinformatics Division, Department of Genetic Engineering and Biotechnology, University of Rajshahi, Rajshahi, Bangladesh
| | - Zidan Khan
- Department of Pharmacy, International Islamic University Chittagong, Chittagong, Bangladesh
| | - Mohammad Nazmul Islam
- Department of Pharmacy, International Islamic University Chittagong, Chittagong, Bangladesh
| | - Mahfuz Ahmed Sakib
- Department of Pharmacy, International Islamic University Chittagong, Chittagong, Bangladesh
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong, Bangladesh
| | - Jesus Simal-Gandara
- Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, Faculty of Food Science and Technology, University of Vigo-Ourense Campus, Ourense, Spain
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Ramírez-Velásquez I, Bedoya-Calle ÁH, Vélez E, Caro-Lopera FJ. Shape Theory Applied to Molecular Docking and Automatic Localization of Ligand Binding Pockets in Large Proteins. ACS OMEGA 2022; 7:45991-46002. [PMID: 36570297 PMCID: PMC9773186 DOI: 10.1021/acsomega.2c02227] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Accepted: 10/11/2022] [Indexed: 06/17/2023]
Abstract
Automatic search of cavities and binding mode analysis between a ligand and a 3D protein receptor are challenging problems in drug design or repositioning. We propose a solution based on a shape theory theorem for an invariant coupled system of ligand-protein. The theorem provides a matrix representation with the exact formulas to be implemented in an algorithm. The method involves the following results: (1) exact formulae for the shape coordinates of a located-rotated invariant coupled system; (2) a parameterized search based on a suitable domain of van der Waals radii; (3) a scoring function for the discrimination of sites by measuring the distance between two invariant coupled systems including the atomic mass; (4) a matrix representation of the Lennard-Jones potential type 6-12 and 6-10 as the punctuation function of the algorithm for a molecular docking; and (5) the optimal molecular docking as a solution of an optimization problem based on the exploration of an exhaustive set of rotations. We apply the method in the xanthine oxidase protein with the following ligands: hypoxanthine, febuxostat, and chlorogenic acid. The results show automatic cavity detection and molecular docking not assisted by experts with meaningful amino acid interactions. The method finds better affinities than the expert software for known published cavities.
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Affiliation(s)
- Iliana Ramírez-Velásquez
- Faculty
of Exact and Applied Sciences, Instituto
Tecnológico Metropolitano ITM, Cll. 73 # 76A-354, Medellín050034, Colombia
- Doctorate
in Modeling and Scientific Computing, Faculty of Basic Sciences, University of Medellin, Medellin050026, Colombia
| | - Álvaro H. Bedoya-Calle
- Faculty
of Basic Sciences, University of Medellin, Cra. 87 # 30-65, Medellín050026, Colombia
| | - Ederley Vélez
- Faculty
of Basic Sciences, University of Medellin, Cra. 87 # 30-65, Medellín050026, Colombia
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Boulebd H. Structure-activity relationship of antioxidant prenylated (iso)flavonoid-type compounds: quantum chemistry and molecular docking studies. J Biomol Struct Dyn 2022; 40:10373-10382. [PMID: 34176432 DOI: 10.1080/07391102.2021.1943529] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Prenylated (iso)flavonoid-type compounds are a subclass of natural flavonoids that have been reported to exhibit good antioxidant properties. In the present paper, the structure-activity relationship of three typical prenylated (iso)flavonoids namely 8-prenyldaidzein (Per), Licoflavone (Lic), and erysubin F (Ery) have been determined using DFT (density functional theory)-based calculations and molecular docking studies. As result, the CH bond of the prenyl substituent was found to be the most thermodynamically favorable site for trapping free radicals in the gas phase and lipid physiological environments. While the OH bond of the B-ring seems to be more reactive in water. HAT (hydrogen atom transfer) and SPLET (sequential proton loss electron transfer) play a decisive role in the antiradical activity of the studied compounds in lipid and polar physiological environments, respectively. All of the studied compounds exhibit strong binding affinity to both xanthine oxidase and inducible nitric oxide synthase enzymes by forming several hydrogen bonds and hydrophobic interactions with their respective catalytic sites. These results suggest that (iso)flavonoid-type compounds are promising radical scavengers and antioxidants. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Houssem Boulebd
- Laboratory of Synthesis of Molecules with Biological Interest, University of Frères Mentouri Constantine 1, Constantine, Algeria
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Alia Abdulaziz Alfi, Alharbi A, Qurban J, Abualnaja MM, Abumelha HM, Saad FA, El-Metwaly NM. Molecular modeling and docking studies of new antioxidant pyrazole-thiazole hybrids. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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11
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Quy PT, Dzung NA, Van Bay M, Van Bon N, Dung DM, Nam PC, Thong NM. Insights into antiradical mechanism and pro-oxidant enzyme inhibitor activity of walterolactone A/B 6- O-gallate-β-d-pyranoglucoside originating from Euonymus laxiflorus Champ. using in silico study. RSC Adv 2022; 12:29975-29982. [PMID: 36321076 PMCID: PMC9580510 DOI: 10.1039/d2ra05312h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 10/11/2022] [Indexed: 11/07/2022] Open
Abstract
The ability of a new compound, Wal, (walterolactone A/B 6-O-gallate-β-d-pyranoglucoside) originating from Euonymus laxiflorus Champ. as a hydroperoxyl radical scavenger and pro-oxidant enzyme inhibitor was studied in silico. Different mechanisms, reaction locations, and chemical species of Wal in aqueous solution were taken into consideration. Formal hydrogen transfer from the OH group has been discovered as the chemical process that contributes most to the antioxidant properties of Wal in nonpolar and aqueous solutions. The overall rate coefficients for polar and non-polar environments are expected to have values of 7.85 × 106 M-1 s-1 and 4.84 × 105 M-1 s-1, respectively. According to the results of the investigation, Wal has greater scavenging activity against the HOO˙ radical than the reference antioxidant Trolox at physiological pH (7.4). In addition, docking results indicate that Wal's antioxidant properties involve the inhibition of the activity of enzyme families (CP450, MP, NO, and XO) that are responsible for ROS production.
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Affiliation(s)
- Phan Tu Quy
- Department of Natural Sciences & Technology, Tay Nguyen University Buon Ma Thuot 630000 Vietnam
| | - Nguyen Anh Dzung
- Institute of Biotechnology and Environment, Tay Nguyen University Buon Ma Thuot 630000 Vietnam
| | - Mai Van Bay
- The University of Danang - University of Science and Education Danang 550000 Vietnam
| | - Nguyen Van Bon
- Institute of Biotechnology and Environment, Tay Nguyen University Buon Ma Thuot 630000 Vietnam
| | - Doan Manh Dung
- Institute of Biotechnology and Environment, Tay Nguyen University Buon Ma Thuot 630000 Vietnam
| | - Pham Cam Nam
- The University of Danang - University of Science and Technology Danang 550000 Vietnam
| | - Nguyen Minh Thong
- The University of Danang - Campus in Kon Tum 704 Phan Dinh Phung Kon Tum Vietnam
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Cam Nam P, Van Bay M, Vo QV, Mechler A, Minh Thong N. Tautomerism and antioxidant power of sulfur-benzo[h]quinoline: DFT and molecular docking studies. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Agbadua OG, Kúsz N, Berkecz R, Gáti T, Tóth G, Hunyadi A. Oxidized Resveratrol Metabolites as Potent Antioxidants and Xanthine Oxidase Inhibitors. Antioxidants (Basel) 2022; 11:antiox11091832. [PMID: 36139906 PMCID: PMC9495788 DOI: 10.3390/antiox11091832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/07/2022] [Accepted: 09/14/2022] [Indexed: 11/16/2022] Open
Abstract
Resveratrol is a well-known natural polyphenol with a plethora of pharmacological activities. As a potent antioxidant, resveratrol is highly oxidizable and readily reacts with reactive oxygen species (ROS). Such a reaction not only leads to a decrease in ROS levels in a biological environment but may also generate a wide range of metabolites with altered bioactivities. Inspired by this notion, in the current study, our aim was to take a diversity-oriented chemical approach to study the chemical space of oxidized resveratrol metabolites. Chemical oxidation of resveratrol and a bioactivity-guided isolation strategy using xanthine oxidase (XO) and radical scavenging activities led to the isolation of a diverse group of compounds, including a chlorine-substituted compound (2), two iodine-substituted compounds (3 and 4), two viniferins (5 and 6), an ethoxy-substituted compound (7), and two ethoxy-substitute,0d dimers (8 and 9). Compounds 4, 7, 8, and 9 are reported here for the first time. All compounds without ethoxy substitution exerted stronger XO inhibition than their parent compound, resveratrol. By enzyme kinetic and in silico docking studies, compounds 2 and 4 were identified as potent competitive inhibitors of the enzyme, while compound 3 and the viniferins acted as mixed-type inhibitors. Further, compounds 2 and 9 had better DPPH scavenging activity and oxygen radical absorbing capacity than resveratrol. Our results suggest that the antioxidant activity of resveratrol is modulated by the effect of a cascade of chemically stable oxidized metabolites, several of which have significantly altered target specificity as compared to their parent compound.
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Affiliation(s)
| | - Norbert Kúsz
- Institute of Pharmacognosy, University of Szeged, H-6720 Szeged, Hungary
| | - Róbert Berkecz
- Institute of Pharmaceutical Analysis, University of Szeged, H-6720 Szeged, Hungary
| | - Tamás Gáti
- Servier Research Institute of Medicinal Chemistry (SRIMC), H-1031 Budapest, Hungary
| | - Gábor Tóth
- NMR Group, Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, H-1111 Budapest, Hungary
| | - Attila Hunyadi
- Institute of Pharmacognosy, University of Szeged, H-6720 Szeged, Hungary
- Interdisciplinary Centre of Natural Products, University of Szeged, H-6720 Szeged, Hungary
- Correspondence: ; Tel.: +36-62545557
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Bruna F, Fernández K, Urrejola F, Touma J, Navarro M, Sepúlveda B, Larrazabal-Fuentes M, Paredes A, Neira I, Ferrando M, Osorio M, Yáñez O, Bravo J. Chemical composition, antioxidant, antimicrobial and antiproliferative activity of Laureliopsis philippiana essential oil of Chile, study in vitro and in silico. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Tariq S, Mutahir S, Khan MA, Mutahir Z, Hussain S, Ashraf M, Bao X, Zhou B, Stark CB, Khan IU. Synthesis, in vitro cholinesterase inhibition, molecular docking, DFT and ADME studies of novel 1,3,4-oxadiazole 2-thiol derivatives. Chem Biodivers 2022; 19:e202200157. [PMID: 35767725 DOI: 10.1002/cbdv.202200157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 06/29/2022] [Indexed: 11/11/2022]
Abstract
A sequence of 1,3,4-oxadiazole 2-thiol derivatives bearing various alkyl or aryl moieties was designed, synthesized, and characterized by modern spectroscopic methods to yield 17 compounds ( 6a - 6q ) which were screened for acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) enzymes in search of 'lead' compounds for the treatment of Alzheimer disease (AD). The compounds 6q, 6p, 6k, 6o, and 6l showed inhibitory capability against AChE and BChE, with IC 50 values ranging from 11.730.49 to 27.360.29 µM for AChE and 21.830.39 to 39.430.44 µM for BChE, inhibiting both enzymes within a limited range. The SAR ascertained that the substitution of the aromatic moiety had a profound effect on the AChE and BChE inhibitory potential as compared to the aliphatic substitutions which were supported by the molecular docking studies. In silico ADME studies reinforced the drug-likeness of most of the synthesized molecules. These results were additionally supplemented by the molecular orbital analysis (HOMO-LUMO) and electrostatic potential maps got from DFT calculations. ESP maps expose that on all structures, there are two potential binding sites conquered by the most positive and most negative districts.
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Affiliation(s)
- Sidrah Tariq
- Government College University Lahore, Department of Chemitry, Anarkaly Lahore, 54000, Lahore, PAKISTAN
| | - Sadaf Mutahir
- University of Sialkot, Department of Chemitry, Daska Road Sialkot, Sialkot, PAKISTAN
| | - Muhammad Asim Khan
- Nanjing University of Science and Technology, School of Chemical Engineering, Xiaolingwei 200, Nanjing 210094, 210000, China, 210000, Nanjing, CHINA
| | - Zeeshan Mutahir
- University of the Punjab Quaid-i-Azam Campus: University of the Punjab, Institute of Biochemistry and Biotechnology, University of the Punjab, 54590 Lahore, Pakistan, Lahore, PAKISTAN
| | - Safdar Hussain
- Islamia University: The Islamia University of Bahawalpur Pakistan, Department of Chemitry, Bahwalpur, Bahwalpur, PAKISTAN
| | - Muhammad Ashraf
- Islamia University: The Islamia University of Bahawalpur Pakistan, Department of Chemitry, Bahwalpur, Government College University Lahore, 54000, Bahwalpur, PAKISTAN
| | - Xiaofang Bao
- Nanjing University of Science and Technology, School of Chemical Engineering, Room No. 104. 2nd Old Chemical Building, School of Chemical Engineering, 210094, 210094, Nanjing, CHINA
| | - Baojing Zhou
- Nanjing University of Science and Technology, School of Chemical Engineering, Room No. 104. 2nd Old Chemical Building, School of Chemical Engineering, 210094, 210094, Nanjing, CHINA
| | - Christian Bw Stark
- Universitat Hamburg Zentralbibliothek Recht: Universitat Hamburg, Fachbereich Chemie, Institut für Organische Chemie, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany, Hamburg, GERMANY
| | - Islam Ullah Khan
- University of Mianwali, Department of Chemistry/VC Office, VC Office, Department of Chemistry, University of Mianwali, Pakistan, Mianwali, PAKISTAN
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16
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Mechanism of Antioxidant Activity of Betanin, Betanidin and Respective C15-Epimers via Shape Theory, Molecular Dynamics, Density Functional Theory and Infrared Spectroscopy. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27062003. [PMID: 35335368 PMCID: PMC8954076 DOI: 10.3390/molecules27062003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 12/16/2021] [Accepted: 12/21/2021] [Indexed: 11/16/2022]
Abstract
Betanin and betanidin are compounds with extensive interest; they are effectively free radical scavengers. The present work aims to elucidate the differences between the mechanism of the antioxidant activity of betanin, betanidin, and their respective C15-epimers. Shape Theory establishes comparisons between the molecules’ geometries and determines parallelisms with the descriptors BDE, PA, ETE IP, PDE, and infrared spectra (IR) obtained from the molecule simulations. Furthermore, the molecules were optimized using the B3LYP/6-31+G(d,p) protocol. Finally, the molecular docking technique analyzes the antioxidant activity of the compounds in the complex with the therapeutic target xanthine oxidase (XO), based on a new proposal for the geometrical arrangement of the ligand atoms in the framework of Shape Theory. The results obtained indicate that the SPLET mechanism is the most favorable in all the molecules studied and that the first group that loses the hydrogen atom in the four molecules is the C17COOH, presenting less PA the isobetanidin. Furthermore, regarding the molecular docking, the interactions of these compounds with the target were favorable, standing out to a greater extent the interactions of isobetanidin with XO, which were analyzed after applying molecular dynamics.
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Kaddouri Y, Abrigach F, Ouahhoud S, Benabbes R, El Kodadi M, Alsalme A, Al-Zaqri N, Warad I, Touzani R. Synthesis, characterization, reaction mechanism prediction and biological study of mono, bis and tetrakis pyrazole derivatives against Fusarium oxysporum f. sp. Albedinis with conceptual DFT and ligand-protein docking studies. Bioorg Chem 2021; 110:104696. [PMID: 33652343 DOI: 10.1016/j.bioorg.2021.104696] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 12/18/2020] [Accepted: 01/28/2021] [Indexed: 11/20/2022]
Abstract
Twelve heterocyclic compounds were prepared using the condensation of hydroxymethanol pyrazole derivatives with different primary aminesas example 2-aminothiazole and 1-aminobenzotriazole to have a diverse productin good yield up to 97%. Those ligands were tested against Fusarium oxysporum f. sp. Albedinis fungi (BAYOUD Disease) with IC50 = 25.6-33.2 µg/ml. After experiments, theoretical investigations were done as DFT study to know the ligands molecular reactivity and the-ligandprotein- docking study to know the possible binding between the prepared ligands with two biological targets: FGB1 (Fusarium oxysporum Guanine nucleotide-binding protein beta subunitprimary amino acid sequence) and Fophy (Fusarium oxysporum phytase domain enzyme). Of all the obtained results, the experimental ones were well correlated with the theoretical with the most common thing between those compounds is (Nδ--Nδ+) which is the antifungal pharmacophore as proposed pincers for Foa inhibition. From docking studies over FGB1 and Fophy, the ligand 9 has the best binding energy of -6.4872 kcal/mol in FGB1 active site and -5.5282 kcal/mol in Fophy active site, but better correlation with Fophy than FGB1 which is followed by PLIF graph to get that Arg116, Arg120 and Lys336 are the vital amino acids of fophy protein based the study over the chosen active site.
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Affiliation(s)
- Yassine Kaddouri
- Laboratory of Applied Chemistry and Environment (LCAE), Faculty of Sciences, University Mohammed Premier, Oujda, Morocco.
| | - Farid Abrigach
- Laboratory of Applied Chemistry and Environment (LCAE), Faculty of Sciences, University Mohammed Premier, Oujda, Morocco
| | - Sabir Ouahhoud
- Laboratory of Biochemistry (LB), Department of Biology, Faculty of Sciences, University Mohamed Premier, Oujda, Morocco
| | - Redouane Benabbes
- Laboratory of Biochemistry (LB), Department of Biology, Faculty of Sciences, University Mohamed Premier, Oujda, Morocco
| | - Mohamed El Kodadi
- Laboratory of Applied Chemistry and Environment (LCAE), Faculty of Sciences, University Mohammed Premier, Oujda, Morocco; Laboratoire d'Innovation en Sciences, Technologie et Education (LISTE), CRMEF Oriental, Oujda, Morocco
| | - Ali Alsalme
- Department of chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Nabil Al-Zaqri
- Department of chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; Department of Chemistry, College of Science, Ibb University, P. O. Box 70270, Ibb, Yemen
| | - Ismail Warad
- Department of Chemistry, Science College, An-Najah National University, PB 7, Nablus, Palestine
| | - Rachid Touzani
- Laboratory of Applied Chemistry and Environment (LCAE), Faculty of Sciences, University Mohammed Premier, Oujda, Morocco
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Santos SC, Fortes GA, Camargo LT, Camargo AJ, Ferri PH. Antioxidant effects of polyphenolic compounds and structure-activity relationship predicted by multivariate regression tree. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2020.110366] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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19
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Samsonowicz M, Kalinowska M, Gryko K. Enhanced Antioxidant Activity of Ursolic Acid by Complexation with Copper (II): Experimental and Theoretical Study. MATERIALS (BASEL, SWITZERLAND) 2021; 14:E264. [PMID: 33430329 PMCID: PMC7825779 DOI: 10.3390/ma14020264] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/02/2020] [Accepted: 12/31/2020] [Indexed: 12/15/2022]
Abstract
The copper (II) complex of ursolic acid (Cu(II) UA) was synthesized and discussed in terms of its infrared, UV-visible spectra, quantum-chemical calculations at B3LYP/6-31G(d) level and antioxidant capacity. The copper (II) complex was stable in methanolic solution with the molar ratio metal:ligand 1:1. The data obtained by FT-IR confirmed the metal ion coordination through the carboxylate anion. The antioxidant properties of ursolic acid and its complex with Cu were discussed on the basis of energy of the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) and values of chemical reactivity parameters. The antiradical properties of ursolic acid and the Cu (II) complex were examined against DPPH• and HO• radicals, and the ferric reducing antioxidant power (FRAP) was examined. The Cu(II) complex showed higher antioxidant activity than ursolic acid, i.e., in DPPH• assay, the EC50 for UA was 47.0 mM, whereas, for Cu(II), UA EC50 = 19.5 mM; the FRAP value for UA was 20.8 µMFe2+, and 35.4 µMFe2+ for Cu(II) UA (compound concentration 3 mM). Although there was no distinct difference in the antioxidant activity against HO• between these two chemicals, they were both better HO• scavengers than DPPH• and showed different kinetics in the reaction with DPPH•.
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Affiliation(s)
- Mariola Samsonowicz
- Department of Chemistry, Biology and Biotechnology, Institute of Civil Engineering and Energetics, Faculty of Civil Engineering and Environmental Science, Bialystok University of Technology, Wiejska 45E Street, 15-351 Bialystok, Poland; (M.K.); (K.G.)
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Ethylene Induction of Non-Enzymatic Metabolic Antioxidants in Matricaria chamomilla. Molecules 2020; 25:molecules25235720. [PMID: 33287420 PMCID: PMC7729440 DOI: 10.3390/molecules25235720] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 11/30/2020] [Accepted: 12/01/2020] [Indexed: 11/17/2022] Open
Abstract
Phytochemical investigations of Matricaria chamomilla L. (Asteraceae) stated the presence of several compounds with an established therapeutic and antioxidant potential. The chamomile non-enzymatic antioxidant system includes low molecular mass compounds, mainly polyphenols such as cinnamic, hydroxybenzoic and chlorogenic acids, flavonoids and coumarins. The objective of this work was to evaluate the role of the non-enzymatic antioxidant system after stimulation by ethylene in tetraploid chamomile plants. Seven days of ethylene treatment significantly increased the activity of phenylalanine ammonia-lyase, which influenced the biosynthesis of protective polyphenols in the first step of their biosynthetic pathway. Subsequently, considerable enhanced levels of phenolic metabolites with a substantial antioxidant effect (syringic, vanillic and caffeic acid, 1,5-dicaffeoylquinic acid, quercetin, luteolin, daphnin, and herniarin) were determined by HPLC-DAD-MS. The minimal information on the chlorogenic acids function in chamomile led to the isolation and identification of 5-O-feruloylquinic acid. It is accumulated during normal conditions, but after the excessive effect of abiotic stress, its level significantly decreases and levels of other caffeoylquinic acids enhance. Our results suggest that ethephon may act as a stimulant of the production of pharmaceutically important non-enzymatic antioxidants in chamomile leaves and thus, lead to an overall change in phytochemical content and therapeutic effects of chamomile plants, as well.
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Antioxidant-Based Medicinal Properties of Stingless Bee Products: Recent Progress and Future Directions. Biomolecules 2020; 10:biom10060923. [PMID: 32570769 PMCID: PMC7356725 DOI: 10.3390/biom10060923] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 06/10/2020] [Accepted: 06/15/2020] [Indexed: 12/27/2022] Open
Abstract
Stingless bees are a type of honey producers that commonly live in tropical countries. Their use for honey is being abandoned due to its limited production. However, the recent improvements in stingless bee honey production, particularly in South East Asia, have brought stingless bee products back into the picture. Although there are many stingless bee species that produce a wide spread of products, known since old eras in traditional medicine, the modern medical community is still missing more investigational studies on stingless bee products. Whereas comprehensive studies in the current era attest to the biological and medicinal properties of honeybee (Apis mellifera) products, the properties of stingless bee products are less known. This review highlights for the first time the medicinal benefits of stingless bee products (honey, propolis, pollen and cerumen), recent investigations and promising future directions. This review emphasizes the potential antioxidant properties of these products that in turn play a vital role in preventing and treating diseases associated with oxidative stress, microbial infections and inflammatory disorders. Summarizing all these data and insights in one manuscript may increase the commercial value of stingless bee products as a food ingredient. This review will also highlight the utility of stingless bee products in the context of medicinal and therapeutic properties, some of which are yet to be discovered.
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Kumar CRS, Jha A, Deepthi S. DFT Studies of Distinct Anilines with p-Hydroxycinnamic Acids for Antioxidant Profile. Med Chem 2020; 17:60-70. [PMID: 32370721 DOI: 10.2174/1573406416666200506085152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 03/09/2020] [Accepted: 03/10/2020] [Indexed: 01/23/2023]
Abstract
BACKGROUND Life style and jobs in current situations have generated increased free radicals such as hydroxyl (OH•) and superoxide (O2•) radicals, thereby increasing stress in humans. Interest in search of antioxidants that trap these free radicals has increased to relieve stress. β-carotene (provitamin A), ascorbic acid (vitamin C), tocopherol or vitamin E, Trolox; butyl hydroxy toluene and phenolic compounds are the well-known antioxidants. Several methods evaluate the antioxidant property existing in natural substances (medicinal plants and agri-food products) and synthetic compounds (2-methyl-3- (pyrrolidin-2-ylideneamino) quinazolin-4 (3H) -one and 3,3'- (1,4- phenylenebis (methanylylidene)) bis (azanylylidene) (2-methyl-quinazolin-4 (3H) -one). OBJECTIVE The objective of this study is to focus on complexes with p-hydroxycinnamic acids to trap free radicals in a greener way. METHODS Spectroscopic shifts and structural studies were employed to attribute electronic properties responsible for antioxidant profile. Spectroscopic shifts in wavenumbers were attributed with Fourier Transform Infrared Spectra (FTIR) and Fourier Transform Raman spectra (FT Raman Spectra). Structural studies were performed with Gaussian package, electron density method the B3LYP method, basis set 6-31(d) for attributing electronic properties responsible for antioxidant profile. RESULTS Interpretation of FTIR spectra revealed spectroscopic shifts in wavenumbers in all the complexes responsible for bonding. Further, studies confirmed the formation of complex with reduced intensities in Raman spectra. Computational studies revealed enhancement in molecular and electronic properties responsible for antioxidant power. CONCLUSION Studies revealed that complex with p-nitroaniline contribute to greater acceptor and donor power responsible for antioxidant power. These higher powers suggest the best antiradicals to trap free radicals.
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Affiliation(s)
- Ch Ravi S Kumar
- Department of Physics, Institute of Science, GITAM University, Visakhapatnam, India
| | - Anjali Jha
- Department of Chemistry, Institute of Science, GITAM University, Visakhapatnam, India
| | - Sri Deepthi
- Department of Physics, Lendi Institute of Engg & Technology, Visakhapatnam, India
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Products Derived from Buchenavia tetraphylla Leaves Have In Vitro Antioxidant Activity and Protect Tenebrio molitor Larvae against Escherichia coli-Induced Injury. Pharmaceuticals (Basel) 2020; 13:ph13030046. [PMID: 32188166 PMCID: PMC7151707 DOI: 10.3390/ph13030046] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 02/22/2020] [Accepted: 02/29/2020] [Indexed: 02/07/2023] Open
Abstract
The relevance of oxidative stress in the pathogenesis of several diseases (including inflammatory disorders) has traditionally led to the search for new sources of antioxidant compounds. In this work, we report the selection of fractions with high antioxidant action from B. tetraphylla (BT) leaf extracts. In vitro methods (DPPH and ABTS assays; determination of phenolic and flavonoid contents) were used to select products derived from B. tetraphylla with high antioxidant action. Then, the samples with the highest potentials were evaluated in a model of injury based on the inoculation of a lethal dose of heat-inactivated Escherichia coli in Tenebrio molitor larvae. Due to its higher antioxidant properties, the methanolic extract (BTME) was chosen to be fractionated using Sephadex LH-20 column-based chromatography. Two fractions from BTME (BTFC and BTFD) were the most active fractions. Pre-treatment with these fractions protected larvae of T. molitor from the stress induced by inoculation of heat-inactivated E. coli. Similarly, BTFC and BTFD increased the lifespan of larvae infected with a lethal dose of enteroaggregative E. coli 042. NMR data indicated the presence of aliphatic compounds (terpenes, fatty acids, carbohydrates) and aromatic compounds (phenolic compounds). These findings suggested that products derived from B. tetraphylla leaves are promising candidates for the development of antioxidant and anti-infective agents able to treat oxidative-related dysfunctions.
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Keita H, dos Santos CBR, Ramos MM, Padilha EC, Serafim RB, Castro AN, Amado JRR, da Silva GM, Ferreira IM, Giuliatti S, Carvalho JCT. Assessment of the hypoglycemic effect of Bixin in alloxan-induced diabetic rats: in vivo and in silico studies. J Biomol Struct Dyn 2020; 39:1017-1028. [DOI: 10.1080/07391102.2020.1724567] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Hady Keita
- Laboratory of Drugs Discovery, Department of Biological Sciences and Health, Federal University of Amapá, Macapá, Brazil
- Division of Post-Grade, University of the Sierra, Ixtlán de Juárez, México
| | - Cleydson Breno Rodrigues dos Santos
- Laboratory of Drugs Discovery, Department of Biological Sciences and Health, Federal University of Amapá, Macapá, Brazil
- Laboratory of Modeling and Computational Chemistry, Department of Biological Sciences and Health, Federal University of Amapa, Macapá, Brazil
| | - Matheus Mercês Ramos
- Research Group Biocatalysis and Apllied Organic Synthesis, Federal University of Amapa, Macapá, Brazil
| | - Elias Carvalho Padilha
- Department of Natural Active Principles and Toxicology, Faculty of Pharmaceutical Sciences, São Paulo State University, Araraquara, Brazil
| | - Rodolfo Bortolozo Serafim
- Department of Cellular and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, Brazil
| | - Andres Navarrete Castro
- Laboratory of Pharmacology of Natural Products, Faculty of Chemistry, Department of Pharmacy, Universidad Autonoma Nacional de Mexico, Ciudad de Mexico, Mexico
| | - Jesus Rafael Rodriguez Amado
- Laboratory of Drugs Discovery, Department of Biological Sciences and Health, Federal University of Amapá, Macapá, Brazil
| | - Gabriel Monteiro da Silva
- Bioinformatics Group, Department of Genetics, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, Brazil
| | - Irlon Maciel Ferreira
- Research Group Biocatalysis and Apllied Organic Synthesis, Federal University of Amapa, Macapá, Brazil
| | - Silvana Giuliatti
- Bioinformatics Group, Department of Genetics, Ribeirão Preto Medical School, University of São Paulo (USP), Ribeirão Preto, Brazil
| | - José Carlos Tavares Carvalho
- Laboratory of Drugs Discovery, Department of Biological Sciences and Health, Federal University of Amapá, Macapá, Brazil
- Laboratory of Modeling and Computational Chemistry, Department of Biological Sciences and Health, Federal University of Amapa, Macapá, Brazil
- Research Group Biocatalysis and Apllied Organic Synthesis, Federal University of Amapa, Macapá, Brazil
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25
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Fujishima MAT, Sá DMC, Lima CMDS, Bittencourt JAHM, Pereira WLA, Muribeca ADJB, e Silva CYY, da Silva MN, de Sousa FFO, dos Santos CBR, da Silva JO. Chemical profiling of Curatella americana Linn leaves by UPLC-HRMS and its wound healing activity in mice. PLoS One 2020; 15:e0225514. [PMID: 31929529 PMCID: PMC6957176 DOI: 10.1371/journal.pone.0225514] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Accepted: 11/06/2019] [Indexed: 12/11/2022] Open
Abstract
Based on ethnopharmacological studies, a lot of plants, as well as its compounds, have been investigated for the potential use as wound healing agents. In Brazil, Curatella americana is traditionally used by local people to treat wounds, ulcers and inflammations. However, to the best of our knowledge, its traditional use in the treatment of wounds has not been validated by a scientific study. Here, some compounds, many of them flavonoids, were identified in the hydroethanolic extract from the leaves of C. americana (HECA) by LC-HRMS and LC-MS/MS. Besides that, solutions containing different concentrations of HECA and a gel produced with this extract were evaluated for its antimicrobial, coagulant and wound healing activities on an excision mouse wound model as well as its acute dermal safety. A total of thirteen compounds were identified in HECA, mainly quercetin, kaempferol and glucoside derivatives of both, besides catechin and epicatechin known as wound healing agents. The group treated with 1% of HECA exhibited highest wound healing activity and best rate of wound contraction confirmed by histopathology results. The present study provides scientific evidence of, this extract (HECA) possess remarkable wound healing activity, thereby, supporting the traditional use.
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Affiliation(s)
- Mayara Amoras Teles Fujishima
- Postgraduate Program of Pharmaceutical Innovation, Federal University of Amapá, Macapá, AP, Brazil
- Laboratory of Toxicology, Department of Biological and Health Sciences, Federal University of Amapá, Macapá, AP, Brazil
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá, AP, Brazil
- * E-mail:
| | - Dayse Maria Cunha Sá
- Postgraduate Program of Pharmaceutical Innovation, Federal University of Amapá, Macapá, AP, Brazil
- Laboratory of Toxicology, Department of Biological and Health Sciences, Federal University of Amapá, Macapá, AP, Brazil
| | - Carolina Miranda de Sousa Lima
- Postgraduate Program of Pharmaceutical Innovation, Federal University of Amapá, Macapá, AP, Brazil
- Laboratory of Toxicology, Department of Biological and Health Sciences, Federal University of Amapá, Macapá, AP, Brazil
| | - José Adolfo H. M. Bittencourt
- Postgraduate Program of Pharmaceutical Innovation, Federal University of Amapá, Macapá, AP, Brazil
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá, AP, Brazil
| | | | | | | | | | | | - Cleydson B. R. dos Santos
- Postgraduate Program of Pharmaceutical Innovation, Federal University of Amapá, Macapá, AP, Brazil
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá, AP, Brazil
| | - Jocivania Oliveira da Silva
- Postgraduate Program of Pharmaceutical Innovation, Federal University of Amapá, Macapá, AP, Brazil
- Laboratory of Toxicology, Department of Biological and Health Sciences, Federal University of Amapá, Macapá, AP, Brazil
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26
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Muğlu H, Çavuş MS, Bakır T, Yakan H. Synthesis, characterization, quantum chemical calculations and antioxidant activity of new bis-isatin carbohydrazone and thiocarbohydrazone derivatives. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.07.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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27
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Yusuff O, Abdul
Raheem MAO, Mukadam AA, Sulaimon RO. Kinetics and Mechanism of the Antioxidant Activities of C. olitorius and V. amygdalina by Spectrophotometric and DFT Methods. ACS OMEGA 2019; 4:13671-13680. [PMID: 31497684 PMCID: PMC6714516 DOI: 10.1021/acsomega.9b00851] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 07/31/2019] [Indexed: 05/08/2023]
Abstract
The kinetics and mechanism of the antioxidant activities of the methanolic extract of the leaves of two vegetables [Corchorus olitorius (C. olitorius) and Vernonia amygdalina (V. amygdalina)] have been studied using experimental and theoretical approaches. The kinetics (second order and pseudo-first order) of the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activities of the leaf extracts at varying times (30-90 min) were determined using the UV-visible spectrophotometry method at λmax = 517 nm, whereas the mechanism was studied by density functional theory at two levels of functionals (B3LYP and LC-ωPBE) using bond dissociation enthalpy and adiabatic ionization potential values. Molecular properties such as the highest occupied molecular orbital, lowest unoccupied molecular orbital, electronegativity (χ), electrophilicity (ω), hardness (η), and softness (S) of the predominant phenolic antioxidants were also compared. The second-order kinetics is favored by both plants rather than pseudo-first order; however, V. amygdalina with a second-order rate constant k 2 of 0.0152 (mM)-1 min-1 is faster in scavenging DPPH radicals than C. olitorius with a k 2 value of 0.0093 (mM)-1min-1. Chlorogenic acid and luteolin-7-O-β-glucuronide, which are the most abundant phenolic acid antioxidant in C. olitorius and V. amygdalina, both preferably scavenge the DPPH radical via a hydrogen atom transfer mechanism. This is evident from their lower bond dissociation enthalpy values than the adiabatic ionization potential values. Successful molecular docking of these phenolic compounds indicates that both compounds form favorable interactions with the therapeutic target, xanthine oxidase.
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Affiliation(s)
- Olaniyi
K. Yusuff
- Department
of Chemistry, Faculty of Physical Sciences, University of Ilorin, PMB 1515 Ilorin, Nigeria
| | - Modinah Adenike O. Abdul
Raheem
- Department
of Chemistry, Faculty of Physical Sciences, University of Ilorin, PMB 1515 Ilorin, Nigeria
- E-mail: ., . Tel: +2348035952356
| | - Abdulrahman A. Mukadam
- Department
of Chemistry, Faculty of Physical Sciences, University of Ilorin, PMB 1515 Ilorin, Nigeria
| | - Ridwan Oladayo Sulaimon
- Department
of Chemistry, King Fahd University of Petroleum
and Minerals, P.O. Box 5061, 31261 Dhahran, Saudi Arabia
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28
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Bittencourt JAHM, Neto MFA, Lacerda PS, Bittencourt RCVS, Silva RC, Lobato CC, Silva LB, Leite FHA, Zuliani JP, Rosa JMC, Borges RS, Santos CBR. In Silico Evaluation of Ibuprofen and Two Benzoylpropionic Acid Derivatives with Potential Anti-Inflammatory Activity. Molecules 2019; 24:E1476. [PMID: 30991684 PMCID: PMC6515000 DOI: 10.3390/molecules24081476] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 04/07/2019] [Accepted: 04/11/2019] [Indexed: 12/19/2022] Open
Abstract
Inflammation is a complex reaction involving cellular and molecular components and an unspecific response to a specific aggression. The use of scientific and technological innovations as a research tool combining multidisciplinary knowledge in informatics, biotechnology, chemistry and biology are essential for optimizing time and reducing costs in the drug design. Thus, the integration of these in silico techniques makes it possible to search for new anti-inflammatory drugs with better pharmacokinetic and toxicological profiles compared to commercially used drugs. This in silico study evaluated the anti-inflammatory potential of two benzoylpropionic acid derivatives (MBPA and DHBPA) using molecular docking and their thermodynamic profiles by molecular dynamics, in addition to predicting oral bioavailability, bioactivity and toxicity. In accordance to our predictions the derivatives proposed here had the potential capacity for COX-2 inhibition in the human and mice enzyme, due to containing similar interactions with the control compound (ibuprofen). Ibuprofen showed toxic predictions of hepatotoxicity (in human, mouse and rat; toxicophoric group 2-arylacetic or 3-arylpropionic acid) and irritation of the gastrointestinal tract (in human, mouse and rat; toxicophoric group alpha-substituted propionic acid or ester) confirming the literature data, as well as the efficiency of the DEREK 10.0.2 program. Moreover, the proposed compounds are predicted to have a good oral bioavailability profile and low toxicity (LD50 < 700 mg/kg) and safety when compared to the commercial compound. Therefore, future studies are necessary to confirm the anti-inflammatory potential of these compounds.
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Affiliation(s)
- José A H M Bittencourt
- Graduate Program of Pharmaceutical Innovation, Federal University of Amapá, Macapá-AP 68902-280, Brazil.
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá-AP 68902-280, Brazil.
| | - Moysés F A Neto
- Laboratory of Molecular Modeling, State University of Feira de Santana, Feira de Santana-BA 44036-900, Brazil.
| | - Pedro S Lacerda
- Laboratory of Bioinformatics and Molecular Modeling, School of Pharmacy, Federal University of Bahia, Barão de Jeremoabo Street, Salvador 40170-115, BA, Brazil.
| | - Renata C V S Bittencourt
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá-AP 68902-280, Brazil.
| | - Rai C Silva
- Computational Laboratory of Pharmaceutical Chemistry, University of Sao Paulo, Av. Prof. do Café, s/n - Monte Alegre, Ribeirão Preto, São Paulo 14040-903, Brazil.
| | - Cleison C Lobato
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá-AP 68902-280, Brazil.
- Nucleus of Studies and Selection of Bioactive Molecules, Institute of Health Sciences, Federal University of Pará, Belém-PA 66075-110, Brazil.
| | - Luciane B Silva
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá-AP 68902-280, Brazil.
| | - Franco H A Leite
- Laboratory of Molecular Modeling, State University of Feira de Santana, Feira de Santana-BA 44036-900, Brazil.
| | - Juliana P Zuliani
- Laboratory Cellular Immunology Applied to Health, Oswaldo Cruz Foundation, FIOCRUZ Rondônia, Rua da Beira, 7671 BR-364, Porto Velho-RO 78912-000, Brazil.
| | - Joaquín M C Rosa
- Department of Pharmaceutical and Organic Chemistry, Faculty of Pharmacy, Institute of Biosanitary Research ibs.GRANADA. University of Granada, 18071 Granada, Spain.
| | - Rosivaldo S Borges
- Graduate Program of Pharmaceutical Innovation, Federal University of Amapá, Macapá-AP 68902-280, Brazil.
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá-AP 68902-280, Brazil.
- Nucleus of Studies and Selection of Bioactive Molecules, Institute of Health Sciences, Federal University of Pará, Belém-PA 66075-110, Brazil.
| | - Cleydson B R Santos
- Graduate Program of Pharmaceutical Innovation, Federal University of Amapá, Macapá-AP 68902-280, Brazil.
- Laboratory of Modeling and Computational Chemistry, Department of Biological and Health Sciences, Federal University of Amapá, Macapá-AP 68902-280, Brazil.
- Nucleus of Studies and Selection of Bioactive Molecules, Institute of Health Sciences, Federal University of Pará, Belém-PA 66075-110, Brazil.
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29
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Borges RS, Palheta IC, Ota SSB, Morais RB, Barros VA, Ramos RS, Silva RC, Costa JDS, Silva CHTP, Campos JM, Santos CBR. Toward of Safer Phenylbutazone Derivatives by Exploration of Toxicity Mechanism. Molecules 2019; 24:molecules24010143. [PMID: 30609687 PMCID: PMC6337259 DOI: 10.3390/molecules24010143] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 12/12/2018] [Accepted: 12/15/2018] [Indexed: 12/18/2022] Open
Abstract
A drug design for safer phenylbutazone was been explored by reactivity and docking studies involving single electron transfer mechanism, as well as toxicological predictions. Several approaches about its structural properties were performed through quantum chemistry calculations at the B3LYP level of theory, together with the 6-31+G(d,p) basis sets. Molecular orbital and ionization potential were associated to electron donation capacity. The spin densities contribution showed a preferential hydroxylation at the para-positions of phenyl ring when compared to other positions. In addition, on electron abstractions the aromatic hydroxylation has more impact than alkyl hydroxylation. Docking studies indicate that six structures 1, 7, 8 and 13–15 have potential for inhibiting human as well as murine COX-2, due to regions showing similar intermolecular interactions to the observed for the control compounds (indomethacin and refecoxib). Toxicity can be related to aromatic hydroxylation. In accordance to our calculations, the derivatives here proposed are potentially more active as well safer than phenylbutazone and only structures 8 and 13–15 were the most promising. Such results can explain the biological properties of phenylbutazone and support the design of potentially safer candidates.
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Affiliation(s)
- Rosivaldo S Borges
- Núcleo de Estudos e Seleção de Moléculas Bioativas-NESBio, College of Pharmacy, Health Sciences Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
- Programa de Pós-Graduação em Química Medicinal e Modelagem Molecular, Health Science Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
| | - Ivanete C Palheta
- Núcleo de Estudos e Seleção de Moléculas Bioativas-NESBio, College of Pharmacy, Health Sciences Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
| | - Sirlene S B Ota
- Núcleo de Estudos e Seleção de Moléculas Bioativas-NESBio, College of Pharmacy, Health Sciences Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
- Programa de Pós-Graduação em Química Medicinal e Modelagem Molecular, Health Science Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
| | - Roberto B Morais
- Núcleo de Estudos e Seleção de Moléculas Bioativas-NESBio, College of Pharmacy, Health Sciences Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
- Programa de Pós-Graduação em Química Medicinal e Modelagem Molecular, Health Science Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
| | - Valéria A Barros
- Núcleo de Estudos e Seleção de Moléculas Bioativas-NESBio, College of Pharmacy, Health Sciences Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
- Programa de Pós-Graduação em Química Medicinal e Modelagem Molecular, Health Science Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
| | - Ryan S Ramos
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia-Rede BIONORTE, Federal University of Amapá, Macapá 68902-280, AP, Brazil.
| | - Rai C Silva
- Programa de Pós-Graduação em Química Medicinal e Modelagem Molecular, Health Science Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
- Laboratorio de Modelagem e Química Computacional-LMQC, Federal University of Amapá, Department of Biological Sciences. Rod. Juscelino Kubitschek, Km 02, Macapá 68902-280, AP, Brazil.
| | - Josivan da S Costa
- Laboratorio de Modelagem e Química Computacional-LMQC, Federal University of Amapá, Department of Biological Sciences. Rod. Juscelino Kubitschek, Km 02, Macapá 68902-280, AP, Brazil.
| | - Carlos H T P Silva
- Laboratório Computacional de Química Farmacêutica, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, University of Sao Paulo, São Paulo 14040-903, SP, Brazil.
| | - Joaquín M Campos
- Department of Pharmaceutical Organic Chemistry, University of Granada, 18071 Granada, Spain.
| | - Cleydson B R Santos
- Programa de Pós-Graduação em Química Medicinal e Modelagem Molecular, Health Science Institute, Federal University of Pará, Belém 66075-110, PA, Brazil.
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia-Rede BIONORTE, Federal University of Amapá, Macapá 68902-280, AP, Brazil.
- Laboratorio de Modelagem e Química Computacional-LMQC, Federal University of Amapá, Department of Biological Sciences. Rod. Juscelino Kubitschek, Km 02, Macapá 68902-280, AP, Brazil.
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30
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Costa JDS, Ramos RDS, Costa KDSL, Brasil DDSB, Silva CHTDPD, Ferreira EFB, Borges RDS, Campos JM, Macêdo WJDC, Santos CBRD. An In Silico Study of the Antioxidant Ability for Two Caffeine Analogs Using Molecular Docking and Quantum Chemical Methods. Molecules 2018; 23:molecules23112801. [PMID: 30380600 PMCID: PMC6278550 DOI: 10.3390/molecules23112801] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 10/01/2018] [Accepted: 10/11/2018] [Indexed: 12/13/2022] Open
Abstract
The antioxidant activity of molecules constitutes an important factor for the regulation of redox homeostasis and reduction of the oxidative stress. Cells affected by oxidative stress can undergo genetic alteration, causing structural changes and promoting the onset of chronic diseases, such as cancer. We have performed an in silico study to evaluate the antioxidant potential of two molecules of the zinc database: ZINC08706191 (Z91) and ZINC08992920 (Z20). Molecular docking, quantum chemical calculations (HF/6-31G**) and Pearson’s correlation have been performed. Molecular docking results of Z91 and Z20 showed both the lower binding affinity (BA) and inhibition constant (Ki) values for the receptor-ligand interactions in the three tested enzymes (cytochrome P450—CP450, myeloperoxidase—MP and NADPH oxidase—NO) than the control molecules (5-fluorouracil—FLU, melatonin—MEL and dextromethorphan—DEX, for each receptor respectively). Molecular descriptors were correlated with Ki and strong correlations were observed for the CP450, MP and NO receptors. These and other results attest the significant antioxidant ability of Z91 and Z20, that may be indicated for further analyses in relation to the control of oxidative stress and as possible antioxidant agents to be used in the pharmaceutical industry.
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Affiliation(s)
- Josivan da Silva Costa
- Postgraduate Program in Biotechnology and Biodiversity-Network BIONORTE, Federal University of Pará, Rua Augusto Corrêa, 01, Belém, Pará 66075110, Brazil.
- Laboratory of Modeling and Computational Chemistry, Department of Biological Sciences, Federal University of Amapá, Rod. Juscelino Kubitschek, Km 02, s/n, Macapá, Amapá 68902-280, Brazil.
- Laboratory of Molecular Modeling and Simulation System, Federal Rural University of Amazônia, Rua João Pessoa, 121, Capanema, Pará 68700-030, Brazil.
| | - Ryan da Silva Ramos
- Laboratory of Modeling and Computational Chemistry, Department of Biological Sciences, Federal University of Amapá, Rod. Juscelino Kubitschek, Km 02, s/n, Macapá, Amapá 68902-280, Brazil.
- Laboratory of Molecular Modeling and Simulation System, Federal Rural University of Amazônia, Rua João Pessoa, 121, Capanema, Pará 68700-030, Brazil.
| | - Karina da Silva Lopes Costa
- Laboratory of Modeling and Computational Chemistry, Department of Biological Sciences, Federal University of Amapá, Rod. Juscelino Kubitschek, Km 02, s/n, Macapá, Amapá 68902-280, Brazil.
| | | | | | - Elenilze Figueiredo Batista Ferreira
- Laboratory of Modeling and Computational Chemistry, Department of Biological Sciences, Federal University of Amapá, Rod. Juscelino Kubitschek, Km 02, s/n, Macapá, Amapá 68902-280, Brazil.
| | - Rosivaldo Dos Santos Borges
- Postgraduate Program in Biotechnology and Biodiversity-Network BIONORTE, Federal University of Pará, Rua Augusto Corrêa, 01, Belém, Pará 66075110, Brazil.
| | - Joaquín María Campos
- Department of Pharmaceutical and Organic Chemistry, University of Granada, Campus of Cartuja, 18071 Granada, Spain.
| | - Williams Jorge da Cruz Macêdo
- Postgraduate Program in Biotechnology and Biodiversity-Network BIONORTE, Federal University of Pará, Rua Augusto Corrêa, 01, Belém, Pará 66075110, Brazil.
- Laboratory of Molecular Modeling and Simulation System, Federal Rural University of Amazônia, Rua João Pessoa, 121, Capanema, Pará 68700-030, Brazil.
| | - Cleydson Breno Rodrigues Dos Santos
- Laboratory of Modeling and Computational Chemistry, Department of Biological Sciences, Federal University of Amapá, Rod. Juscelino Kubitschek, Km 02, s/n, Macapá, Amapá 68902-280, Brazil.
- Laboratory of Molecular Modeling and Simulation System, Federal Rural University of Amazônia, Rua João Pessoa, 121, Capanema, Pará 68700-030, Brazil.
- Department of Pharmaceutical and Organic Chemistry, University of Granada, Campus of Cartuja, 18071 Granada, Spain.
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31
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Liu XX, Sun SW, Yuan WJ, Gao H, Si YY, Liu K, Zhang S, Liu Y, Wang W. Isolation of Tricin as a Xanthine Oxidase Inhibitor from Sweet White Clover ( Melilotus albus) and Its Distribution in Selected Gramineae Species. Molecules 2018; 23:molecules23102719. [PMID: 30360380 PMCID: PMC6222886 DOI: 10.3390/molecules23102719] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 10/16/2018] [Accepted: 10/18/2018] [Indexed: 12/11/2022] Open
Abstract
Xanthine oxidase, an enzyme present in significant levels in the intestine and liver, metabolizes hypoxanthine to xanthine and xanthine to uric acid in the purine catabolic pathway. An inhibitory compound acting against xanthine oxidase was isolated from sweet white clover (Melilotus albus) by bioassay and high-performance liquid chromatography guided separation. It was identified as tricin by spectroscopic analysis. Tricin possessed a potent xanthine oxidase inhibitory activity with an IC50 value of 4.13 μM. Further inhibition kinetics data indicated it to be a mixed-type inhibitor and Ki and KI values were determined to be 0.47 μM and 4.41 μM. To find a rich source of tricin, the distribution of tricin in seven different tissues from four Gramineae species was investigated by high-performance liquid chromatography analysis. The highest amount (1925.05 mg/kg dry materials) was found in the straw of wheat, which is considered as a potentially valuable source of natural tricin.
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Affiliation(s)
- Xiao-Xiao Liu
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Shi-Wei Sun
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Wen-Jing Yuan
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Hua Gao
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Yue-Yue Si
- Department of Drug Metabolism and Analysis, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Kun Liu
- Department of Drug Metabolism and Analysis, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Shuang Zhang
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Yang Liu
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Wei Wang
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
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