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da Rocha JAP, da Costa RA, da Costa ADSS, da Rocha ECM, Gomes AJB, Machado AK, Fagan SB, Brasil DDSB, Lima e Lima AH. Harnessing Brazilian biodiversity database: identification of flavonoids as potential inhibitors of SARS-CoV-2 main protease using computational approaches and all-atom molecular dynamics simulation. Front Chem 2024; 12:1336001. [PMID: 38456183 PMCID: PMC10917896 DOI: 10.3389/fchem.2024.1336001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 01/31/2024] [Indexed: 03/09/2024] Open
Abstract
SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2) is the etiological agent responsible for the global outbreak of COVID-19 (Coronavirus Disease 2019). The main protease of SARS-CoV-2, Mpro, is a key enzyme that plays a vital role in mediating viral replication and transcription. In this study, a comprehensive computational approach was employed to investigate the binding affinity, selectivity, and stability of natural product candidates as potential new antivirals acting on the viral polyprotein processing mediated by SARS-CoV-2 Mpro. A library of 288 flavonoids extracted from Brazilian biodiversity was screened to select potential Mpro inhibitors. An initial filter based on Lipinski's rule of five was applied, and 204 compounds that did not violate any of the Lipinski rules were selected. The compounds were then docked into the active site of Mpro using the GOLD program, and the poses were subsequently re-scored using MM-GBSA (Molecular Mechanics Generalized Born Surface Area) binding free energy calculations performed by AmberTools23. The top five flavonoids with the best MM-GBSA binding free energy values were selected for analysis of their interactions with the active site residues of the protein. Next, we conducted a toxicity and drug-likeness analysis, and non-toxic compounds were subjected to molecular dynamics simulation and free energy calculation using the MM-PBSA (Molecular Mechanics Poisson-Boltzmann Surface Area) method. It was observed that the five selected flavonoids had lower MM-GBSA binding free energy with Mpro than the co-crystal ligand. Furthermore, these compounds also formed hydrogen bonds with two important residues, Cys145 and Glu166, in the active site of Mpro. Two compounds that passed the drug-likeness filter showed stable conformations during the molecular dynamics simulations. Among these, NuBBE_867 exhibited the best MM-PBSA binding free energy value compared to the crystallographic inhibitor. Therefore, this study suggests that NuBBE_867 could be a potential inhibitor against the main protease of SARS-CoV-2 and may be further examined to confirm our results.
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Affiliation(s)
- João Augusto Pereira da Rocha
- Laboratory of Modeling and Computational Chemistry, Federal Institute of Education, Science and Technology of Paraná (IFPA) Campus Bragança, Bragança, Brazil
- Laboratório de Planejamento e Desenvolvimento de Fármacos, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, Brazil
- Laboratory of Biosolutions and Bioplastics of the Amazon, Graduate Program in Science and Environment, Institute of Exact and Natural Sciences, Federal University of Pará (UFPA), Belém, Brazil
- Graduate Program in Chemistry, Institute of Exact and Natural Sciences, Federal University of Pará, Belém, Brazil
| | - Renato Araújo da Costa
- Laboratory of Biosolutions and Bioplastics of the Amazon, Graduate Program in Science and Environment, Institute of Exact and Natural Sciences, Federal University of Pará (UFPA), Belém, Brazil
- Laboratory of Molecular Biology, Evolution and Microbiology, Federal Institute of Education Science and Technology of Paraná (IFPA) Campus Abaetetuba, Abaetetuba, Brazil
| | - Andreia do Socorro Silva da Costa
- Laboratory of Biosolutions and Bioplastics of the Amazon, Graduate Program in Science and Environment, Institute of Exact and Natural Sciences, Federal University of Pará (UFPA), Belém, Brazil
| | - Elaine Cristina Medeiros da Rocha
- Laboratory of Modeling and Computational Chemistry, Federal Institute of Education, Science and Technology of Paraná (IFPA) Campus Bragança, Bragança, Brazil
- Laboratório de Planejamento e Desenvolvimento de Fármacos, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, Brazil
- Laboratory of Biosolutions and Bioplastics of the Amazon, Graduate Program in Science and Environment, Institute of Exact and Natural Sciences, Federal University of Pará (UFPA), Belém, Brazil
- Graduate Program in Chemistry, Institute of Exact and Natural Sciences, Federal University of Pará, Belém, Brazil
| | - Anderson José Bahia Gomes
- Laboratory of Molecular Biology, Evolution and Microbiology, Federal Institute of Education Science and Technology of Paraná (IFPA) Campus Abaetetuba, Abaetetuba, Brazil
| | | | | | - Davi do Socorro Barros Brasil
- Laboratory of Biosolutions and Bioplastics of the Amazon, Graduate Program in Science and Environment, Institute of Exact and Natural Sciences, Federal University of Pará (UFPA), Belém, Brazil
- Graduate Program in Chemistry, Institute of Exact and Natural Sciences, Federal University of Pará, Belém, Brazil
| | - Anderson Henrique Lima e Lima
- Laboratório de Planejamento e Desenvolvimento de Fármacos, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, Brazil
- Graduate Program in Chemistry, Institute of Exact and Natural Sciences, Federal University of Pará, Belém, Brazil
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da Costa RA, da Costa ADSS, da Rocha JAP, Lima MRDC, da Rocha ECM, Nascimento FCDA, Gomes AJB, do Rego JDAR, Brasil DDSB. Exploring Natural Alkaloids from Brazilian Biodiversity as Potential Inhibitors of the Aedes aegypti Juvenile Hormone Enzyme: A Computational Approach for Vector Mosquito Control. Molecules 2023; 28:6871. [PMID: 37836714 PMCID: PMC10574778 DOI: 10.3390/molecules28196871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/26/2023] [Accepted: 09/02/2023] [Indexed: 10/15/2023] Open
Abstract
This study explores the potential inhibitory activity of alkaloids, a class of natural compounds isolated from Brazilian biodiversity, against the mJHBP enzyme of the Aedes aegypti mosquito. This mosquito is a significant vector of diseases such as dengue, zika, and chikungunya. The interactions between the ligands and the enzyme at the molecular level were evaluated using computational techniques such as molecular docking, molecular dynamics (MD), and molecular mechanics with generalized Born surface area (MMGBSA) free energy calculation. The findings suggest that these compounds exhibit a high binding affinity with the enzyme, as confirmed by the binding free energies obtained in the simulation. Furthermore, the specific enzyme residues that contribute the most to the stability of the complex with the compounds were identified: specifically, Tyr33, Trp53, Tyr64, and Tyr129. Notably, Tyr129 residues were previously identified as crucial in the enzyme inhibition process. This observation underscores the significance of the research findings and the potential of the evaluated compounds as natural insecticides against Aedes aegypti mosquitoes. These results could stimulate the development of new vector control agents that are more efficient and environmentally friendly.
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Affiliation(s)
- Renato Araújo da Costa
- Laboratory of Biosolutions and Bioplastics of the Amazon, Graduate Program in Science and Environment, Institute of Exact and Natural Sciences, Federal University of Pará (UFPA), Belém 66075-110, PA, Brazil; (A.d.S.S.d.C.); (F.C.d.A.N.); (J.d.A.R.d.R.); (D.d.S.B.B.)
- Laboratory of Molecular Biology, Evolution and Microbiology, Federal Institute of Education, Science and Technology of Pará (IFPA) Campus Abaetetuba, Abaetetuba 68440-000, PA, Brazil; (M.R.d.C.L.); (A.J.B.G.)
| | - Andréia do Socorro Silva da Costa
- Laboratory of Biosolutions and Bioplastics of the Amazon, Graduate Program in Science and Environment, Institute of Exact and Natural Sciences, Federal University of Pará (UFPA), Belém 66075-110, PA, Brazil; (A.d.S.S.d.C.); (F.C.d.A.N.); (J.d.A.R.d.R.); (D.d.S.B.B.)
| | - João Augusto Pereira da Rocha
- Graduate Program in Chemistry, Federal University of Pará (UFPA), Belém 66075-110, PA, Brazil; (J.A.P.d.R.); (E.C.M.d.R.)
| | - Marlon Ramires da Costa Lima
- Laboratory of Molecular Biology, Evolution and Microbiology, Federal Institute of Education, Science and Technology of Pará (IFPA) Campus Abaetetuba, Abaetetuba 68440-000, PA, Brazil; (M.R.d.C.L.); (A.J.B.G.)
| | | | - Fabiana Cristina de Araújo Nascimento
- Laboratory of Biosolutions and Bioplastics of the Amazon, Graduate Program in Science and Environment, Institute of Exact and Natural Sciences, Federal University of Pará (UFPA), Belém 66075-110, PA, Brazil; (A.d.S.S.d.C.); (F.C.d.A.N.); (J.d.A.R.d.R.); (D.d.S.B.B.)
| | - Anderson José Baia Gomes
- Laboratory of Molecular Biology, Evolution and Microbiology, Federal Institute of Education, Science and Technology of Pará (IFPA) Campus Abaetetuba, Abaetetuba 68440-000, PA, Brazil; (M.R.d.C.L.); (A.J.B.G.)
| | - José de Arimatéia Rodrigues do Rego
- Laboratory of Biosolutions and Bioplastics of the Amazon, Graduate Program in Science and Environment, Institute of Exact and Natural Sciences, Federal University of Pará (UFPA), Belém 66075-110, PA, Brazil; (A.d.S.S.d.C.); (F.C.d.A.N.); (J.d.A.R.d.R.); (D.d.S.B.B.)
| | - Davi do Socorro Barros Brasil
- Laboratory of Biosolutions and Bioplastics of the Amazon, Graduate Program in Science and Environment, Institute of Exact and Natural Sciences, Federal University of Pará (UFPA), Belém 66075-110, PA, Brazil; (A.d.S.S.d.C.); (F.C.d.A.N.); (J.d.A.R.d.R.); (D.d.S.B.B.)
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Ramos INDF, da Silva MF, Lopes JMS, Cruz JN, Alves FS, do Rego JDAR, Costa MLD, Assumpção PPD, Barros Brasil DDS, Khayat AS. Extraction, Characterization, and Evaluation of the Cytotoxic Activity of Piperine in Its Isolated form and in Combination with Chemotherapeutics against Gastric Cancer. Molecules 2023; 28:5587. [PMID: 37513459 PMCID: PMC10385350 DOI: 10.3390/molecules28145587] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 06/30/2023] [Accepted: 07/05/2023] [Indexed: 07/30/2023] Open
Abstract
Gastric cancer is one of the most frequent types of neoplasms worldwide, usually presenting as aggressive and difficult-to-manage tumors. The search for new structures with anticancer potential encompasses a vast research field in which natural products arise as promising alternatives. In this scenario, piperine, an alkaloid of the Piper species, has received attention due to its biological activity, including anticancer attributes. The present work proposes three heating-independent, reliable, low-cost, and selective methods for obtaining piperine from Piper nigrum L. (Black pepper). Electronic (SEM) and optical microscopies, X-ray diffraction, nuclear magnetic resonance spectroscopies (13C and 1H NMR), and optical spectroscopies (UV-Vis, photoluminescence, and FTIR) confirm the obtention of piperine crystals. The MTT assay reveals that the piperine samples exhibit good cytotoxic activity against primary and metastasis models of gastric cancer cell lines from the Brazilian Amazon. The samples showed selective cytotoxicity on the evaluated models, revealing higher effectiveness in cells bearing a higher degree of aggressiveness. Moreover, the investigated piperine crystals demonstrated the ability to act as a good cytotoxicity enhancer when combined with traditional chemotherapeutics (5-FU and GEM), allowing the drugs to achieve the same cytotoxic effect in cells employing lower concentrations. These results establish piperine as a promising molecule for therapy investigations in aggressive gastric cancer, both in its isolated form or as a bioenhancer.
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Affiliation(s)
| | | | | | - Jordy Neves Cruz
- Institute of Technology, Federal University of Pará, Belém 66075-110, PA, Brazil
| | - Fabrine Silva Alves
- Graduate Program in Pharmaceutical Innovation, Federal University of Pará, Belém 66075-110, PA, Brazil
| | | | | | | | - Davi do Socorro Barros Brasil
- Institute of Technology, Federal University of Pará, Belém 66075-110, PA, Brazil
- Graduate Program in Pharmaceutical Innovation, Federal University of Pará, Belém 66075-110, PA, Brazil
- Graduate Program in Science and Environment, Federal University of Pará, Belém 66075-110, PA, Brazil
| | - André Salim Khayat
- Oncology Research Center, Federal University of Pará, Belém 66075-110, PA, Brazil
- Institute of Biological Science, Federal University of Pará, Belém 66075-110, PA, Brazil
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da Silva DA, Brasil DDSB, Cunha EJDS, Aires GCM, da Costa RA, do Rego JDAR, Pena RDS. Structural and Thermal Characteristics of Buriti Tree Gum (Mauritia flexuosa). Polymers (Basel) 2023; 15:polym15071662. [PMID: 37050276 PMCID: PMC10097139 DOI: 10.3390/polym15071662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/18/2023] [Accepted: 03/23/2023] [Indexed: 03/29/2023] Open
Abstract
A polysaccharide was isolated from the exudate of a buriti tree trunk (Mauritia flexuosa). The molecular structure, thermal stability, morphology, crystallinity, and elemental composition of the product were investigated through spectroscopic techniques, such as Fourier-transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR 1H and 13C), and energy-dispersive X-ray spectroscopy (EDS); thermogravimetric analysis (TG), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and X-ray diffraction (XRD). In addition to NMR molecular modeling studies, were performed to confirm the 1H and 13C chemical shifts to Gal and Xyl conformers. Buriti tree gum (BG) is an arabinogalactan, containing Rha, Ara, Xyl, and Gal, and degrades almost completely (98.5%) at 550 °C and has a maximum degradation peak at 291.97 °C, with a mass loss of 56.33%. In the temperature range of 255–290 °C, the energy involved in the BG degradation process was approximately 17 J/g. DSC indicated a glass transition temperature of 27.2 °C for BG, which had an irregular and heterogeneous morphology, with smooth or crumbling scaly regions, demonstrating the amorphous nature of BG that was confirmed by the XRD standard. EDS revealed the presence of carbon and oxygen, as well as calcium, magnesium, aluminum, silicon, chlorine, and potassium, in the BG composition.
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da Silva Pereira GV, da Silva Pereira GV, Xavier Neves EMP, Albuquerque GA, de Arimatéia Rodrigues do Rêgo J, Cardoso DNP, do Socorro Barros Brasil D, Joele MRSP. Effect of the Mixture of Polymers on the Rheological and Technological Properties of Composite Films of Acoupa Weakfish (Cynoscion acoupa) and Cassava Starch (Manihot esculenta C.). FOOD BIOPROCESS TECH 2021. [DOI: 10.1007/s11947-021-02622-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Pereira GVDS, Vasconcelos da Silva Pereira G, Paixão Xavier Neves EM, de Arimateia Rodrigues do Rego J, Brasil DDSB, de Fátima Henriques Lourenço L, Sarkis Peixoto Joele MR. Glycerol and fatty acid influences on the rheological and technological properties of composite films from residues of Cynoscion acoupa. FOOD BIOSCI 2020. [DOI: 10.1016/j.fbio.2020.100773] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Vilhena AEG, Sehwartz RLDC, Bezerra PTDS, Brasil DDSB. Caracterização físico-química do óleo de castanha do Pará extraído por prensagem hidráulica. ACTA ACUST UNITED AC 2020. [DOI: 10.34115/basrv4n3-009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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de Souza TNV, Vieira MGA, da Silva MGC, Brasil DDSB, de Carvalho SML. H 3PO 4-activated carbons produced from açai stones and Brazil nut shells: removal of basic blue 26 dye from aqueous solutions by adsorption. Environ Sci Pollut Res Int 2019; 26:28533-28547. [PMID: 30701470 DOI: 10.1007/s11356-019-04215-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 01/09/2019] [Indexed: 06/09/2023]
Abstract
The adsorption characteristics of C.I. basic blue 26 (BB26) from aqueous solutions onto H3PO4-activated carbons (ACs) produced from açai stones (Euterpe oleracea Martius) and Brazil nut shells (Bertholletia excelsa H. B. K) were investigated in a batch system. The ACs were characterized by XRD, FT-IR, N2 adsorption at 77 K, mercury porosimetry, and acidity/basicity analysis. The pseudo-first-order, pseudo-second-order kinetic models and intraparticle diffusion model were used for the kinetic interpretations. The adsorption processes follow the pseudo-second-order kinetic model. The Boyd plots revealed that the adsorption processes were mainly controlled by film diffusion. Equilibrium data were analyzed by the Langmuir and Freundlich models, at different temperatures. The equilibrium data were best represented by the Langmuir isotherm. The adsorption processes were found to be favorable, exothermic, and spontaneous. The açai stones and Brazil nut shells-based ACs were shown to be effective adsorbents for removal of BB26 from aqueous solutions.
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Affiliation(s)
| | | | - Meuris Gurgel Carlos da Silva
- School of Chemical Engineering, University of Campinas, Albert Einstein Avenue, 500, Campinas, SP, 13083-970, Brazil
| | | | - Samira Maria Leão de Carvalho
- School of Chemical Engineering, Federal University of Pará, Augusto Corrêa Street, 01, Belém, PA, 66075-110, Brazil.
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Silva SG, da Costa RA, de Oliveira MS, da Cruz JN, Figueiredo PLB, Brasil DDSB, Nascimento LD, Chaves Neto AMDJ, de Carvalho Junior RN, Andrade EHDA. Chemical profile of Lippia thymoides, evaluation of the acetylcholinesterase inhibitory activity of its essential oil, and molecular docking and molecular dynamics simulations. PLoS One 2019; 14:e0213393. [PMID: 30849129 PMCID: PMC6407782 DOI: 10.1371/journal.pone.0213393] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 02/19/2019] [Indexed: 11/19/2022] Open
Abstract
The essential oils of the fresh and dry flowers, leaves, branches, and roots of Lippia thymoides were obtained by hydrodistillation and analyzed using gas chromatography (GC) and GC-mass spectrometry (MS). The acetylcholinesterase inhibitory activity of the essential oil of fresh leaves was investigated on silica gel plates. The interactions of the key compounds with acetylcholinesterase were simulated by molecular docking and molecular dynamics studies. In total, 75 compounds were identified, and oxygenated monoterpenes were the dominant components of all the plant parts, ranging from 19.48% to 84.99%. In the roots, the main compounds were saturated and unsaturated fatty acids, having contents varying from 39.5% to 32.17%, respectively. In the evaluation of the anticholinesterase activity, the essential oils (detection limit (DL) = 0.1 ng/spot) were found to be about ten times less active than that of physostigmine (DL = 0.01ng/spot), whereas thymol and thymol acetate presented DL values each of 0.01 ng/spot, equivalent to that of the positive control. Based on the docking and molecular dynamics studies, thymol and thymol acetate interact with the catalytic residues Ser203 and His447 of the active site of acetylcholinesterase. The binding free energies (ΔGbind) for these ligands were -18.49 and -26.88 kcal/mol, demonstrating that the ligands are able to interact with the protein and inhibit their catalytic activity.
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Affiliation(s)
- Sebastião Gomes Silva
- Program of Post-Graduation in Chemistry, Federal University of Pará, Belém, PA, Brazil
| | | | - Mozaniel Santana de Oliveira
- LABEX/FEA (Faculty of Food Engineering), Program of Post-Graduation in Food Science and Technology, Federal University of Para, Belém, PA, Brazil
| | - Jorddy Neves da Cruz
- Laboratory of Preparation and Computation of Nanomaterials, Federal University of Pará, Belém, PA, Brazil
| | - Pablo Luis B. Figueiredo
- Program of Post-Graduation in Chemistry, Federal University of Pará, Belém, PA, Brazil
- Department of Natural Sciences, State University of Pará, Belém, PA, Brazil
| | | | - Lidiane Diniz Nascimento
- Program of Post-Graduation in Engineering of Natural Resources of Amazon, Federal University of Pará, Belém, PA, Brazil
- Adolpho Ducke Laboratory, Botany Coordinating, Museu Paraense Emílio Goeldi, Belém, PA, Brazil
| | - Antônio Maia de Jesus Chaves Neto
- Laboratory of Preparation and Computation of Nanomaterials, Federal University of Pará, Belém, PA, Brazil
- Program of Post-Graduation in Engineering of Natural Resources of Amazon, Federal University of Pará, Belém, PA, Brazil
| | - Raul Nunes de Carvalho Junior
- LABEX/FEA (Faculty of Food Engineering), Program of Post-Graduation in Food Science and Technology, Federal University of Para, Belém, PA, Brazil
- Program of Post-Graduation in Engineering of Natural Resources of Amazon, Federal University of Pará, Belém, PA, Brazil
- * E-mail:
| | - Eloisa Helena de Aguiar Andrade
- Program of Post-Graduation in Chemistry, Federal University of Pará, Belém, PA, Brazil
- Adolpho Ducke Laboratory, Botany Coordinating, Museu Paraense Emílio Goeldi, Belém, PA, Brazil
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Silva da Costa R, de Farias Silva N, Gabbay Alves TV, Fernandes da Silva M, do Socorro Barros Brasil D, Ribeiro-Costa RM, Converti A, Carréra Silva JO. Antioxidant Activity of an Industrial Cupuassu Seed By-product: Molecular Modeling of Phenolic Compounds. Chem Eng Technol 2018. [DOI: 10.1002/ceat.201800299] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Russany Silva da Costa
- Federal University of Pará, College of Pharmacy; R&D Pharmaceutical and Cosmetic Laboratory; Rua Augusto Corrêa 1, Guamá 66075-110 Belém, PA Brazil
| | - Natália de Farias Silva
- Federal University of Pará, College of Pharmacy; R&D Pharmaceutical and Cosmetic Laboratory; Rua Augusto Corrêa 1, Guamá 66075-110 Belém, PA Brazil
| | - Taís Vanessa Gabbay Alves
- Federal University of Pará, College of Pharmacy; Pharmaceutical Nanotechnology Laboratory; Rua Augusto Corrêa 1, Guamá 66075-110 Belém, PA Brazil
| | - Milena Fernandes da Silva
- Federal University of Pernambuco; Bioscience Center; Avenida Prof. Moraes Rego 1235, Cidade Universitária 50670-901 Recife, PE Brazil
| | | | - Roseane Maria Ribeiro-Costa
- Federal University of Pará, College of Pharmacy; Pharmaceutical Nanotechnology Laboratory; Rua Augusto Corrêa 1, Guamá 66075-110 Belém, PA Brazil
| | - Attilio Converti
- Genoa University; Department of Civil, Chemical and Environmental Engineering, Pole of Chemical Engineering; Via Opera Pia 15 16145 Genoa Italy
| | - José Otávio Carréra Silva
- Federal University of Pará, College of Pharmacy; R&D Pharmaceutical and Cosmetic Laboratory; Rua Augusto Corrêa 1, Guamá 66075-110 Belém, PA Brazil
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Melo SDS, Diniz JEDM, Guimarães JH, Costa JDS, Brasil DDSB, de Morais SSDS, Brito DC, Carvalho JCT, Dos Santos CBR, da Silva DL. Production and characterization of absorbent heat from the bark of residual Brazil nut bark (Bertholletia Excelsa l.). Chem Cent J 2015; 9:36. [PMID: 26150893 PMCID: PMC4491886 DOI: 10.1186/s13065-015-0114-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 06/11/2015] [Indexed: 11/15/2022] Open
Abstract
Background The increasing efforts to reduce the environmental impact on the Amazon’s natural resources are focusing on watercourses that pass through effluents with high concentrations of heavy metals. The adsorption by absorbent is one of the methods used to remove metallic ions. In this assignment, the preparation of activated carbon from Brazil nut bark (Bertholletia excelsa l.), which is a waste material produced from the use of seeds in foodstuffs and cosmetics, is shown. Results The absorbent was carbonized at 400 °C in 3 h and activated at 800 °C in 2 h, having received the name of AC2, and, the specific area, pore size, real and apparent densities, porosity, scanning electron microscopy (SEM) coupled to energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), pH, moisture, fixed carbon and surface functional groups by Boehm method and Fourier transformed infrared spectroscopy (FTIR) were characterized. According to the results, the carbon presented alkaline characteristic, mesoporosity, average pore diameters of 2.203 nm and specific surface area by BET of 464.835 m2 g-1. The efficiency of removal was performed in synthetic solutions of copper sulphate (II) pentahydrate (CuSO4.5H2O), evaluating the influence of pH, initial concentration of copper solution (II), particle diameter and time contact of the adsorbent in solution. The results of higher removal percentages were to pH 5.09, initial concentration of 50, 100 and 150 mg-1 diameter 0.595 < D < 1.19 mm and time contact of 5 min. Conclusions The Brazil nut bark is shown to be an important bio-waste, being an excellent alternative material for the low-cost production of activated carbon for use in processes involving iterations of adsorption.
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Affiliation(s)
- Selma Dos Santos Melo
- Laboratory of Environmental Processes, Federal University of Pará, Rua Augusto Corrêa, 01, Belém, Pará 66075-110 Brazil
| | - Joel Estevão de Melo Diniz
- Laboratory of Physical Chemistry, State University of Amapá, Av. Presidente Vargas, Campus I, 650, Macapá, Amapá 68900-070 Brazil ; Laboratory of General and Analytical Chemistry, Federal University of Amapá, Rod. JK Km 2, s/n, Macapá, Amapá 68902-280 Brazil
| | - Jonilson Heslei Guimarães
- Laboratory of Physical Chemistry, State University of Amapá, Av. Presidente Vargas, Campus I, 650, Macapá, Amapá 68900-070 Brazil
| | - Josivan da Silva Costa
- Laboratory of General and Analytical Chemistry, Federal University of Amapá, Rod. JK Km 2, s/n, Macapá, Amapá 68902-280 Brazil
| | | | | | - Daímio Chaves Brito
- Laboratory of Physical Chemistry, State University of Amapá, Av. Presidente Vargas, Campus I, 650, Macapá, Amapá 68900-070 Brazil
| | - José Carlos Tavares Carvalho
- Laboratory of General and Analytical Chemistry, Federal University of Amapá, Rod. JK Km 2, s/n, Macapá, Amapá 68902-280 Brazil
| | | | - Denilson Luz da Silva
- Laboratory of Environmental Processes, Federal University of Pará, Rua Augusto Corrêa, 01, Belém, Pará 66075-110 Brazil
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da Costa Lopes AS, de Carvalho SML, do Socorro Barros Brasil D, de Alcântara Mendes R, Lima MO. Surface Modification of Commercial Activated Carbon (CAG) for the Adsorption of Benzene and Toluene. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/ajac.2015.66051] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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