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Vieira LV, M Juvenato ME, Krause M, Heringer OA, Ribeiro JS, Brandão GP, Kuster RM, Carneiro MTWD. The effects of drying methods and harvest season on piperine, essential oil composition, and multi-elemental composition of black pepper. Food Chem 2022; 390:133148. [PMID: 35551027 DOI: 10.1016/j.foodchem.2022.133148] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 03/30/2022] [Accepted: 05/01/2022] [Indexed: 11/16/2022]
Abstract
This study aimed to evaluate the piperine content, essential oil composition, and multi-elemental composition of black pepper samples according to different drying methods and harvest season. Differences in essential oil composition and B, Ca, K, Mg, and S were noted according to sampling campaign, indicating secondary metabolism plant alterations. Mechanical drying resulted in essential oil composition changes due to high temperature exposure during processing. Increases in Fe and Cr contents when employing mechanical dryers with direct heating were also observed, due to direct contact with metallic structures and particulate material from the burning process. The As and Pb contents of several samples were higher than the maximum permissible limits, reaching 0.46 and 0.56 mg kg-1, respectively, thus surpassing legislation safety limitations for human consumption.
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Affiliation(s)
- Luiza V Vieira
- Department of Chemistry, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória, Espírito Santo, Brazil
| | - Maria Eduarda M Juvenato
- Department of Chemistry, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória, Espírito Santo, Brazil
| | - Maiara Krause
- Department of Chemistry, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória, Espírito Santo, Brazil
| | - Otávio A Heringer
- Department of Research and Development, Tommasi Ambiental, R. Arara Azul, 187, Novo Horizonte, Serra, Espírito Santo, Brazil
| | - Juliano S Ribeiro
- Department of Chemistry, Instituto Federal de Educação, Ciência e Tecnologia do Espírito Santo, Av. Ministro Salgado Filho, 1000, Soteco, Vila Velha, Espírito Santo, Brazil
| | - Geisamanda P Brandão
- Department of Chemistry, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória, Espírito Santo, Brazil
| | - Ricardo M Kuster
- Department of Chemistry, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória, Espírito Santo, Brazil
| | - Maria Tereza W D Carneiro
- Department of Chemistry, Universidade Federal do Espírito Santo, Av. Fernando Ferrari, 514, Goiabeiras, Vitória, Espírito Santo, Brazil.
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Salles TS, Meneses MDF, Caldas LA, Sá-Guimarães TE, de Oliveira DM, Ventura JA, Azevedo RC, Kuster RM, Soares MR, Ferreira DF. Virucidal and antiviral activities of pomegranate (Punica granatum) extract against the mosquito-borne Mayaro virus. Parasit Vectors 2021; 14:443. [PMID: 34479605 PMCID: PMC8414858 DOI: 10.1186/s13071-021-04955-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 02/05/2021] [Accepted: 08/14/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The arthropod-borne Mayaro virus (MAYV) causes "Mayaro fever," a disease of medical significance, primarily affecting individuals in permanent contact with forested areas in tropical South America. Recently, MAYV has attracted attention due to its likely urbanization. There are currently no licensed drugs against most mosquito-transmitted viruses. Punica granatum (pomegranate) fruits cultivated in Brazil have been subjected to phytochemical investigation for the identification and isolation of antiviral compounds. In the present study, we explored the antiviral activity of pomegranate extracts in Vero cells infected with Mayaro virus. METHODS The ethanol extract and punicalagin of pomegranate were extracted solely from the shell and purified by chromatographic fractionation, and were chemically identified using spectroscopic techniques. The cytotoxicity of the purified compounds was measured by the dye uptake assay, while their antiviral activity was evaluated by a virus yield inhibition assay. RESULTS Pomegranate ethanol extract (CC50 = 588.9, IC50 = 12.3) and a fraction containing punicalagin as major compound (CC50 = 441.5, IC50 = 28.2) were shown to have antiviral activity (SI 49 and 16, respectively) against Mayaro virus, an alphavirus. Immunofluorescence analysis showed the virucidal effect of pomegranate extract, and transmission electron microscopy (TEM) revealed damage in viral particles treated with this extract. CONCLUSIONS The P. granatum extract is a promising source of antiviral compounds against the alphavirus MAYV and represents an excellent candidate for future studies with other enveloped RNA viruses.
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Affiliation(s)
- Tiago Souza Salles
- Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil. .,Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
| | | | - Lucio Ayres Caldas
- National Institute of Science and Technology for Structural Biology and Bioimaging, INBEB, Rio de Janeiro, RJ, Brazil.,Laboratory of Cellular Ultrastructure Hertha Meyer, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | | | - Danielle M de Oliveira
- Natural Products Research Institute, IPPN, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - José A Ventura
- Capixaba Institute of Research, Technical Assistance and Rural Extension, Espirito Santo, Vitoria, Brazil
| | - Renata Campos Azevedo
- Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ricardo M Kuster
- Natural Products Research Institute, IPPN, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.,Chemistry Department, Federal University of Espírito Santo, Vitoria, Espirito Santo, Brazil
| | - Márcia Regina Soares
- Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Davis Fernandes Ferreira
- Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.,National Institute of Science and Technology for Structural Biology and Bioimaging, INBEB, Rio de Janeiro, RJ, Brazil.,Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC, USA
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3
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Salles TS, Meneses MDF, Yamamoto KA, Sá-Guimarães TE, Caldas LA, Silva JHS, da Silva Ferreira P, Amaral ACF, Ventura JA, Azevedo RC, Kuster RM, Soares MR, Ferreira DF. Chemical composition and anti-Mayaro virus activity of Schinus terebinthifolius fruits. Virusdisease 2021; 32:526-534. [PMID: 34631977 PMCID: PMC8473526 DOI: 10.1007/s13337-021-00698-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 05/20/2021] [Indexed: 10/21/2022] Open
Abstract
Brazilian traditional medicine has explored the antiviral properties of many plant extracts, including those from the Brazilian pepper tree, Schinus terebinthifolius. In the present study, we investigated the chemical composition and anti-mayaro virus (MAYV) activity of S. terebinthifolius fruit. Extensive virucidal activity (more than 95%) was detected for the ethyl acetate extract and the isolated biflavonoids. From the ethyl acetate extract of Schinus terebinthifolius fruits, two bioflavonoids were isolated ((2S, 2″S)-2,3,2″,3″-tetrahydroamentoflavone and agathisflavone), which showed strong virucidal activity against Mayaro virus. Furthermore, several other compounds like terpenes and phenolics were identified by hyphenated techniques (GC-MS, LC-MS and HPLC-UV), as well as by mass spectrometry. Immunofluorescence assay confirmed antiviral activity and transmission electron microscopy revealed damage in viral particles treated with biflavonoids. The data suggest the direct action of the extract and the biflavonoids on the virus particles. The biflavonoids tetrahydroamentoflavone and agathisflavone had strong virucidal activity and reduced MAYV infection. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s13337-021-00698-z.
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Affiliation(s)
- Tiago S. Salles
- Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcelo D. F. Meneses
- Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Kristie A. Yamamoto
- Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Lucio Ayres Caldas
- National Institute of Science and Technology for Structural Biology and Bioimaging, INBEB, Rio de Janeiro, RJ Brazil
- Laboratory of Cellular Ultrastructure Hertha Meyer, Federal University of Rio de Janeiro, Rio de Janeiro, RJ Brazil
| | - Jessica H. S. Silva
- Natural Products Research Institute, IPPN, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | - José A. Ventura
- Capixaba Research Institute, Rural Technical Assistance and Extension, INCAPER, Espirito Santo, Vitória Brazil
| | - Renata Campos Azevedo
- Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ricardo M. Kuster
- Natural Products Research Institute, IPPN, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- Chemistry Department, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | - Márcia R. Soares
- Department of Biochemistry, Institute of Chemistry, Federal University of Rio de Janeiro, Av. Athos da Silveira Ramos 149 Room A-537, Rio de Janeiro, RJ 21941-909 Brazil
| | - Davis F. Ferreira
- Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- National Institute of Science and Technology for Structural Biology and Bioimaging, INBEB, Rio de Janeiro, RJ Brazil
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC USA
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Gomes ACC, Soares MA, Gomes AKC, Silva NLC, Miranda ALP, Tributino JLM, Luz DA, de Amorim GC, Simas NK, Kuster RM. Antinociceptive constituents from Saccharum officinarum L. juice. Nat Prod Res 2020; 35:5392-5396. [PMID: 32515612 DOI: 10.1080/14786419.2020.1771708] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
This work aimed to investigate the main components of methanol fractions (MFSC and MFSCf) from Saccharum officinarum L. juice and their in vivo antinociceptive potential. After LC-ESI-MS and ESI-MS/MS analysis, phenolic compounds, such as dicaffeoylquinic acid, schaftoside, vicenin-2, stilbene glycoside and the major compound tricin-7-O-(2″- α-L-rhamnopyranosyl)-α-D-galacturonide (1), were identified. MFSC and MFSCf significantly inhibited nociceptive responses in classical mice pain models. The isolated flavone, 1, inhibited strongly the neurogenic phase in formalin test without interfering with the inflammatory one. The co-administration of the opioid antagonist, naloxone, significantly reversed the antinociceptive effects on the neurogenic phase of both methanol fractions and 1, demonstrating the involvement of the opioid system on the antinociceptive effect. This work describes for the first time the antinociceptive effect of flavonoids present in sugarcane juice, highlighting the isolation and the structural elucidation of tricin-7-O-(2″-α-L-rhamnopyranosyl)-α-D-galacturonide through ESI-MS/MS, 1D- and 2D-NMR.
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Affiliation(s)
- Anne C C Gomes
- Instituto de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil.,Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Mariana A Soares
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Anne K C Gomes
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Natália L C Silva
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Ana L P Miranda
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Jorge L M Tributino
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Dandara A Luz
- Departamento de Química, Universidade Federal do Espírito Santo, Espírito Santo, ES, Brasil
| | - Gisele C de Amorim
- Instituto de Bioquímica Médica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Naomi K Simas
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Ricardo M Kuster
- Instituto de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil.,Departamento de Química, Universidade Federal do Espírito Santo, Espírito Santo, ES, Brasil
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5
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da Silva JHS, Simas NK, Alviano CS, Alviano DS, Ventura JA, de Lima EJ, Seabra SH, Kuster RM. Anti-Escherichia coli activity of extracts from Schinus terebinthifolius fruits and leaves. Nat Prod Res 2017; 32:1365-1368. [PMID: 28669243 DOI: 10.1080/14786419.2017.1344657] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Ethanol extracts obtained from Schinus terebinthifolius Raddi fruits and leaves were active against Escherichia coli with MIC of 78 μg mL-1 for both extracts. Phytochemical analyses revealed a major presence of phenolic acids, tannins, fatty acids and acid triterpenes in the leaves and phenolic acids, fatty acids, acid triterpenes and biflavonoids in the fruits. Major compounds isolated from the plant, such as the acid triterpene schinol, the phenolic acid derivative ethyl gallate and the biflavonoids agathisflavone and tetrahydroamentoflavone, showed very little activity against E. coli. Bioautography of the ethanol extracts on silica gel plate showed inhibition zones for E. coli. They were removed from the plate and the compounds identified as a mixture of myristic, pentadecanoic, palmitic, heptadecanoic, stearic, nonadecanoic, eicosanoic, heneicosanoic and behenic fatty acids.
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Affiliation(s)
- Jessica H S da Silva
- a Instituto de Pesquisas de Produtos Naturais, Bloco H, Centro de Ciências da Saúde , Universidade Federal do Rio de Janeiro , Rio de Janeiro , Brazil
| | - Naomi K Simas
- b Faculdade de Farmácia, Centro de Ciências da Saúde , Universidade Federal do Rio de Janeiro , Rio de Janeiro , Brazil
| | - Celuta S Alviano
- c Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde , Universidade Federal do Rio de Janeiro , Rio de Janeiro , Brazil
| | - Daniela S Alviano
- c Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde , Universidade Federal do Rio de Janeiro , Rio de Janeiro , Brazil
| | - José A Ventura
- d Instituto Capixaba de Pesquisa, Assistência Técnica e Extensão Rural , Vitória , Brazil
| | - Eliandro J de Lima
- e Laboratório de Tecnologia em Cultura de Células , Centro Universitário Estadual da Zona Oeste , Rio de Janeiro , Brazil
| | - Sergio H Seabra
- e Laboratório de Tecnologia em Cultura de Células , Centro Universitário Estadual da Zona Oeste , Rio de Janeiro , Brazil
| | - Ricardo M Kuster
- a Instituto de Pesquisas de Produtos Naturais, Bloco H, Centro de Ciências da Saúde , Universidade Federal do Rio de Janeiro , Rio de Janeiro , Brazil.,f Núcleo de Competência em Química do Petróleo, Departamento de Química , Universidade Federal do Espírito Santo , Vitória , Brazil
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6
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Do C Caxito ML, Victório CP, Da Costa HB, Romão W, Kuster RM, Gattass CR. Antiproliferative activity of extracts of Euphorbia tirucalli L (Euphorbiaceae) from three regions of Brazil. TROP J PHARM RES 2017. [DOI: 10.4314/tjpr.v16i5.7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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7
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Covington CL, Junior FMS, Silva JHS, Kuster RM, de Amorim MB, Polavarapu PL. Atropoisomerism in Biflavones: The Absolute Configuration of (-)-Agathisflavone via Chiroptical Spectroscopy. J Nat Prod 2016; 79:2530-2537. [PMID: 27723329 DOI: 10.1021/acs.jnatprod.6b00395] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The first natural occurrence in optically active form of the dimeric flavonoid agathisflavone and definition of its axial chirality using chiroptical spectroscopic methods are described. The experimental electronic circular dichroism, electronic dissymmetry factor, optical rotatory dispersion, vibrational circular dichroism (VCD), and vibrational dissymmetry factor spectra of agathisflavone are presented and analyzed with their corresponding quantum chemical predictions to definitively assign the axial chirality of (-)-agathisflavone as (aS).
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Affiliation(s)
- Cody L Covington
- Department of Chemistry, Vanderbilt University , Nashville, Tennessee 37235, United States
| | - Fernando M S Junior
- Department of Chemistry, Vanderbilt University , Nashville, Tennessee 37235, United States
- Instituto de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro , 21941-902, Rio de Janeiro, RJ, Brazil
| | - Jessica H S Silva
- Instituto de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro , 21941-902, Rio de Janeiro, RJ, Brazil
| | - Ricardo M Kuster
- Instituto de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro , 21941-902, Rio de Janeiro, RJ, Brazil
| | - Mauro B de Amorim
- Instituto de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro , 21941-902, Rio de Janeiro, RJ, Brazil
| | - Prasad L Polavarapu
- Department of Chemistry, Vanderbilt University , Nashville, Tennessee 37235, United States
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8
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Kill JB, Oliveira IF, Tose LV, Costa HB, Kuster RM, Machado LF, Correia RM, Rodrigues RR, Vasconcellos GA, Vaz BG, Romão W. Chemical characterization of synthetic cannabinoids by electrospray ionization FT-ICR mass spectrometry. Forensic Sci Int 2016; 266:474-487. [DOI: 10.1016/j.forsciint.2016.07.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2016] [Revised: 07/03/2016] [Accepted: 07/08/2016] [Indexed: 10/21/2022]
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9
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dos Santos NA, Souza LM, Domingos E, França HS, Lacerda V, Beatriz A, Vaz BG, Rodrigues RR, Carvalho VV, Merlo BB, Kuster RM, Romão W. Evaluating the selectivity of colorimetric test (Fast Blue BB salt) for the cannabinoids identification in marijuana street samples by UV–Vis, TLC, ESI(+)FT-ICR MS and ESI(+)MS/MS. Forensic Chem 2016. [DOI: 10.1016/j.forc.2016.07.001] [Citation(s) in RCA: 18] [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: 10/21/2022]
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10
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Fonseca BF, Predes D, Cerqueira DM, Reis AH, Amado NG, Cayres MCL, Kuster RM, Oliveira FL, Mendes FA, Abreu JG. Derricin and derricidin inhibit Wnt/β-catenin signaling and suppress colon cancer cell growth in vitro. PLoS One 2015; 10:e0120919. [PMID: 25775405 PMCID: PMC4361740 DOI: 10.1371/journal.pone.0120919] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Accepted: 02/09/2015] [Indexed: 01/05/2023] Open
Abstract
Overactivation of the Wnt/β-catenin pathway in adult tissues has been implicated in many diseases, such as colorectal cancer. Finding chemical substances that can prevent this phenomenon is an emerging problem. Recently, several natural compounds have been described as Wnt/β-catenin inhibitors and might be promising agents for the control of carcinogenesis. Here, we describe two natural substances, derricin and derricidin, belonging to the chalcone subclass, that show potent transcriptional inhibition of the Wnt/β-catenin pathway. Both chalcones are able to affect the cell distribution of β-catenin, and inhibit Wnt-specific reporter activity in HCT116 cells and in Xenopus embryos. Derricin and derricidin also strongly inhibited canonical Wnt activity in vitro, and rescued the Wnt-induced double axis phenotype in Xenopus embryos. As a consequence of Wnt/β-catenin inhibition, derricin and derricidin treatments reduce cell viability and lead to cell cycle arrest in colorectal cancer cell lines. Taken together, our results strongly support these chalcones as novel negative modulators of the Wnt/β-catenin pathway and colon cancer cell growth in vitro.
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Affiliation(s)
- Barbara F. Fonseca
- Universidade Federal do Rio de Janeiro, Instituto de Ciências Biomédicas, Rio de Janeiro, Brazil
| | - Danilo Predes
- Universidade Federal do Rio de Janeiro, Instituto de Ciências Biomédicas, Rio de Janeiro, Brazil
| | - Debora M. Cerqueira
- Universidade Federal do Rio de Janeiro, Instituto de Ciências Biomédicas, Rio de Janeiro, Brazil
| | - Alice H. Reis
- Universidade Federal do Rio de Janeiro, Instituto de Ciências Biomédicas, Rio de Janeiro, Brazil
| | - Nathalia G. Amado
- Universidade Federal do Rio de Janeiro, Instituto de Ciências Biomédicas, Rio de Janeiro, Brazil
| | - Marina C. L. Cayres
- Universidade Federal do Rio de Janeiro, Instituto de Ciências Biomédicas, Rio de Janeiro, Brazil
| | - Ricardo M. Kuster
- Universidade Federal do Rio de Janeiro, Instituto de Pesquisas em Produtos Naturais, Rio de Janeiro, Brazil
| | - Felipe L. Oliveira
- Universidade Federal do Rio de Janeiro, Instituto de Ciências Biomédicas, Rio de Janeiro, Brazil
| | - Fabio A. Mendes
- Universidade Federal do Rio de Janeiro, Instituto de Ciências Biomédicas, Rio de Janeiro, Brazil
| | - Jose G. Abreu
- Universidade Federal do Rio de Janeiro, Instituto de Ciências Biomédicas, Rio de Janeiro, Brazil
- * E-mail:
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Pereira C, Oliveira LLD, Gonçalves R, Amaral ACF, Kuster RM, Sakuragui CM. PHYTOCHEMICAL AND PHYLOGENETIC ANALYSIS OF Spondias(Anacardiaceae). QUIM NOVA 2015. [DOI: 10.5935/0100-4042.20150087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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12
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Lopes BP, Gaique TG, Souza LL, Paula GSM, Kluck GEG, Atella GC, Gomes ACC, Simas NK, Kuster RM, Ortiga-Carvalho TM, Pazos-Moura CC, Oliveira KJ. Cinnamon extract improves the body composition and attenuates lipogenic processes in the liver and adipose tissue of rats. Food Funct 2015; 6:3257-65. [DOI: 10.1039/c5fo00569h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Cinnamon attenuates lipogenic processes, regulating the expression of key enzymes, transcriptional factors and their target genes in the liver and adipose tissue.
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13
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Spindola KCW, Simas NK, Salles TS, de Meneses MDF, Sato A, Ferreira D, Romão W, Kuster RM. Anti-Mayaro virus activity of Cassia australis extracts (Fabaceae, Leguminosae). Parasit Vectors 2014; 7:537. [PMID: 25428163 PMCID: PMC4258289 DOI: 10.1186/s13071-014-0537-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Accepted: 11/12/2014] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND The arthropod-borne Mayaro virus (MAYV) causes 'Mayaro fever', a disease of medical significance, primarily affecting individuals in permanent contact with forested areas in tropical South America. Studies showed that the virus could also be transmitted by the mosquito Aedes aegypti. Recently, MAYV has attracted attention due to its likely urbanization. To date, there are no drugs that can treat this illness. METHODS Fractions and compounds were obtained by chromatography from leaf extracts of C. australis and chemically identified as flavonoids and condensed tannins using spectroscopic and spectrometric techniques (UV, NMR, and ESI-FT-ICR MS). Cytotoxicity of EtOAc, n-BuOH and EtOAc-Pp fractions were measured by the dye-uptake assay while their antiviral activity was evaluated by a virus yield inhibition assay. Larvicidal activity was measured by the procedures recommended by the WHO expert committee for determining acute toxicity. RESULTS The following group of substances was identified from EtOAc, n-BuOH and EtOAc-Pp fractions: flavones, flavonols, and their glycosides and condensed tannins. EtOAc and n-BuOH fractions inhibited MAYV production, respectively, by more than 70% and 85% at 25 μg/mL. EtOAc-Pp fraction inhibited MAYV production by more than 90% at 10 μg/mL, displaying a stronger antiviral effect than the licensed antiviral ribavirin. This fraction had an excellent antiviral effect (IC90 = 4.7 ± 0.3 μg/mL), while EtOAc and n-BuOH fractions were less active (IC90 = 89.1 ± 4.4 μg/mL and IC90 = 40.9 ± 5.7 μg/mL, respectively). CONCLUSIONS C. australis can be used as a source of compounds with anti-Mayaro virus activity. This is the first report on the biological activity of C. australis.
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Affiliation(s)
- Kassia C W Spindola
- Natural Product Research Institute, Center of Health Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Naomi K Simas
- Natural Product and Food Department. Center of Health Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Tiago S Salles
- Chemistry Institute, Biochemistry Department, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Marcelo D F de Meneses
- Microbiology Institute, Virology Department, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Alice Sato
- Botanical Department. Center of Biological and Health Sciences, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Davis Ferreira
- Microbiology Institute, Virology Department, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Wanderson Romão
- Petroleomic and Forensic Laboratory, Department of Chemistry, Federal University of Espírito Santo, 29075-910, Vitória, ES, Brazil.
| | - Ricardo M Kuster
- Natural Product Research Institute, Center of Health Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
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dos Santos AE, Kuster RM, Yamamoto KA, Salles TS, Campos R, de Meneses MDF, Soares MR, Ferreira D. Quercetin and quercetin 3-O-glycosides from Bauhinia longifolia (Bong.) Steud. show anti-Mayaro virus activity. Parasit Vectors 2014; 7:130. [PMID: 24678592 PMCID: PMC3973022 DOI: 10.1186/1756-3305-7-130] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 03/12/2014] [Indexed: 01/24/2023] Open
Abstract
Background The arthropod-borne Mayaro virus (MAYV) causes ‘Mayaro fever’, a disease of medical significance, primarily affecting individuals in permanent contact with forested areas in tropical South America. Recently, MAYV has attracted attention due to its likely urbanization. Currently, there are no licensed drugs against most mosquito-transmitted viruses. Here, we investigated the in vitro anti-MAYV activity of the flavonoids quercetin and its derivatives from the Brazilian shrub Bauhinia longifolia (Bong.) Steud. Methods Flavonoids were purified by chromatographic fractionation from leaf extracts of B. longifolia and chemically identified as quercetin and quercetin glycosides using spectroscopic techniques. Cytotoxicity of purified flavonoids and of EtOAc- and n-BuOH-containing flavonoid mixtures was measured by the dye-uptake assay while their antiviral activity was evaluated by a virus yield inhibition assay. Results The following flavonoids were purified from B. longifolia leaves: non-glycosylated quercetin and its glycosides guaijaverin, quercitrin, isoquercitrin, and hyperin. EtOAc and n-BuOH fractions containing these flavonoids demonstrated the highest antiviral activity of all tested substances, while quercetin had the highest antiviral activity amongst purified flavonoids. Quercetin, EtOAc, or n-BuOH fractions inhibited MAYV production by more than 90% at 25 μg/mL, displaying a stronger antiviral effect than the licensed antiviral ribavirin. A mixture of the isomers isoquercitrin and hyperin had a modest antiviral effect (IC90 = 104.9), while guaijaverin and quercitrin did not show significant antiviral activity. Conclusions B. longifolia is a good source of flavonoids with anti-Mayaro virus activity. This is the first report of the activity of quercetin and its derivatives against an alphavirus.
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Affiliation(s)
| | | | | | | | | | | | | | - Davis Ferreira
- Microbiology Institute, Virology Department, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
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Carvalho MP, Lima MM, Santos MG, Rocha LM, Kuster RM. Anthraquinones and xanthone from Bonnetia stricta and their chemosystematic significance. BIOCHEM SYST ECOL 2013. [DOI: 10.1016/j.bse.2012.11.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Ruela HS, Sabino KCC, Leal ICR, Landeira-Fernandez AM, de Almeida MRA, Rocha TSM, Kuster RM. Hypoglycemic effect of Bumelia sartorum polyphenolic rich extracts. Nat Prod Commun 2013; 8:207-210. [PMID: 23513730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
Bumelia sartorum (Sapotaceae) is used ethnomedicinally for treatment of several diseases, including diabetes mellitus. The aim of this work was to investigate the hypoglycemic effect of B. sartorum extracts, rich in polyphenolic compounds, and the possible mechanisms of action. Assessment of B. sartorum hypoglycemic activity was performed from the blood glucose level in normoglycemic mice after administration of the extract by oral gavage. The hypothesis that sarco/endoplasmic reticulum Ca(2+)-ATPase (SERCA) inhibition could prolong the increase in cytoplasmic Ca2+ concentration, thus leading to an increase of insulin release was evaluated. The enzyme inhibition was measured by ATP hydrolysis using SERCA1 isolated from rabbit skeletal muscle. The total content of phenolic compounds was determined by the Folin-Ciocalteau method. The ethyl acetate (EtOAc) partition and F5 fraction obtained from B. sartorum, both of them rich in polyphenolics, were shown to have a hypoglycemic effect on normoglycemic mice, more significant than that of the known antidiabetic drug, glibenclamide used as a standard comparable compound. Both samples significantly inhibited SERCA activity. Different extracts of B. sartorum, rich in polyphenolic compounds, were able to reduce blood glucose in normoglycemic mice and inhibit SERCA activity. SERCA inhibition may be one of the possible mechanisms involved in glucose decrease.
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Affiliation(s)
- Halliny S Ruela
- Biotecnologia Vegetal, Centro de Ciências da Saúde, Cidade Universitária, Universidade Federal do Rio de Janeiro, 21921-590 Rio de Janeiro, RJ, Brazil.
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Ruela HS, Sabino KCC, Leal ICR, Landeira-Fernandez AM, de Almeida MRA, Rocha TSM, Kuster RM. Hypoglycemic Effect of Bumelia sartorum Polyphenolic Rich Extracts. Nat Prod Commun 2013. [DOI: 10.1177/1934578x1300800219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Bumelia sartorum (Sapotaceae) is used ethnomedicinally for treatment of several diseases, including diabetes mellitus. The aim of this work was to investigate the hypoglycemic effect of B. sartorum extracts, rich in polyphenolic compounds, and the possible mechanisms of action. Assessment of B. sartorum hypoglycemic activity was performed from the blood glucose level in normoglycemic mice after administration of the extract by oral gavage. The hypothesis that sarco/endoplasmic reticulum Ca2+-ATPase (SERCA) inhibition could prolong the increase in cytoplasmic Ca2+ concentration, thus leading to an increase of insulin release was evaluated. The enzyme inhibition was measured by ATP hydrolysis using SERCA1 isolated from rabbit skeletal muscle. The total content of phenolic compounds was determined by the Folin-Ciocalteau method. The ethyl acetate (EtOAc) partition and F5 fraction obtained from B. sartorum, both of them rich in polyphenolics, were shown to have a hypoglycemic effect on normoglycemic mice, more significant than that of the known antidiabetic drug, glibenclamide used as a standard comparable compound. Both samples significantly inhibited SERCA activity. Different extracts of B. sartorum, rich in polyphenolic compounds, were able to reduce blood glucose in normoglycemic mice and inhibit SERCA activity. SERCA inhibition may be one of the possible mechanisms involved in glucose decrease.
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Affiliation(s)
- Halliny S. Ruela
- Biotecnologia Vegetal, Centro de Ciências da Saúde, Cidade Universitária, Universidade Federal do Rio de Janeiro, 21921-590, Rio de Janeiro, RJ, Brazil
| | - Katia C. C. Sabino
- Instituto de Biologia Roberto Alcântara Gomes, na Universidade do Estado do Rio de Janeiro, 20551-030, Rio de Janeiro, RJ, Brazil
| | - Ivana C. R. Leal
- Faculdade de Farmácia, Cidade Universitária Campus Macaé, Universidade Federal do Rio de Janeiro, 27930-560, Macaé, RJ, Brazil
| | - Ana M. Landeira-Fernandez
- Instituto de Bioquímica Médica, Centro de Ciências da Saúde, Cidade Universitária, Universidade Federal do Rio de Janeiro, 21921-590, Rio de Janeiro, RJ, Brazil
| | - Michelle R. A. de Almeida
- Núcleo de Pesquisas de Produtos Naturais, Centro de Ciências da Saúde, Cidade Universitária, Universidade Federal do Rio de Janeiro, 21921-590, Rio de Janeiro, RJ, Brazil
| | - Talita S. M. Rocha
- Instituto de Bioquímica Médica, Centro de Ciências da Saúde, Cidade Universitária, Universidade Federal do Rio de Janeiro, 21921-590, Rio de Janeiro, RJ, Brazil
| | - Ricardo M. Kuster
- Biotecnologia Vegetal, Centro de Ciências da Saúde, Cidade Universitária, Universidade Federal do Rio de Janeiro, 21921-590, Rio de Janeiro, RJ, Brazil
- Núcleo de Pesquisas de Produtos Naturais, Centro de Ciências da Saúde, Cidade Universitária, Universidade Federal do Rio de Janeiro, 21921-590, Rio de Janeiro, RJ, Brazil
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Leal ICR, I. Júnior I, Pereira EM, Laport MDS, Kuster RM, Santos KRND. Pentaclethra macroloba tannins fractions active against methicillin-resistant staphylococcal and Gram-negative strains showing selective toxicity. Rev bras farmacogn 2011. [DOI: 10.1590/s0102-695x2011005000132] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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França H, Corrêa AL, Oliveira AP, Kuster RM, Santos RP, Rocha L. Flavonoids from Myrsine rubra M. F. Freitas & Kinoshita (Myrsinaceae). BIOCHEM SYST ECOL 2011. [DOI: 10.1016/j.bse.2011.06.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Ruela HS, Leal ICR, Almeida MRAD, Santos KRND, Wessjohann LA, Kuster RM. Antibacterial and antioxidant activities and acute toxicity of Bumelia sartorum Mart., Sapotaceae, a Brazilian medicinal plant. Rev bras farmacogn 2011. [DOI: 10.1590/s0102-695x2011005000035] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Vidal LS, Alves AM, Kuster RM, Lage C, Leitão AC. Genotoxicity and mutagenicity of Echinodorus macrophyllus (chapéu-de-couro) extracts. Genet Mol Biol 2010; 33:549-57. [PMID: 21637431 PMCID: PMC3036109 DOI: 10.1590/s1415-47572010005000060] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [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: 10/21/2009] [Accepted: 03/02/2010] [Indexed: 11/22/2022] Open
Abstract
Echinodorus macrophyllus, commonly known as chapéu-de-couro, is a medicinal plant used in folk medicine to treat inflammation and rheumatic diseases. In this work, we used short-term bacterial assays based on the induction of SOS functions to examine the genotoxicity and mutagenicity of an aqueous extract of E. macrophyllus leaves. Whole extract and an ethyl acetate fraction showed similar genotoxicity and caused an ~70-fold increase in lysogenic induction. The extract also gave a positive result in the SOS chromotest with an increase of 12-fold in β-Galactosidase enzymatic units. There was a strong trend towards base substitutions and frameshifts at purine sites in the mutations induced by the extract in Escherichia coli (CC103 and CC104 strains) and Salmonella typhimurium test strains (22-fold increase in histidine revertants in TA98 strain). Since reactive oxygen species may be implicated in aging process and in degenerative diseases, we used antioxidant compounds as catalase, thiourea and dipyridyl in the lysogenic induction test. All this compounds were able to reduce the induction factor observed in the treatment with chapéu-de-couro, thus suggesting that the genotoxicity and mutagenicity were attributable to the production of reactive oxygen species that targeted DNA purines.
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Affiliation(s)
- Leonardo S Vidal
- Laboratório de Radiobiologia Molecular, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ Brazil
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Victório CP, Arruda RDCDO, Lage CLS, Kuster RM. Production of flavonoids in organogenic cultures of Alpinia zerumbet. Nat Prod Commun 2010; 5:1219-1223. [PMID: 20839623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023] Open
Abstract
Alpinia zerumbet plantlets were cultured in vitro in MS medium supplemented with growth regulators, including IAA, TDZ and BAP. Using high performance liquid chromatography (HPLC), the production of rutin, kaempferol-3-O-glucuronide, and kaempferol-3-O-rutinoside was evaluated, based on leaf hydroalcoholic extracts of three-month-old plantlets. The relative concentration of phenolics from the hydroalcoholic extracts of plantlets cultured in control medium reached 100% compared with plantlets treated with growth regulators and donor plants (80%). The in vitro rutin production was more pronounced than the other flavonoids. While no direct relation between the content of phenolic compounds and increased flavonoid production was observed, the combination of IAA + TDZ enhanced the production of rutin (83.2 microg/g dried leaves) and kaempferol-3-O-glucuronide (29 microg/g dried leaves), compared with growth regulators used alone. Overall, these findings suggest the value of in vitro cultivation as a means of enriching phenolic and flavonoid production in medicinal plants.
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Affiliation(s)
- Cristiane P Victório
- Laboratório de Fisiologia Vegetal, Instituto de Biofisica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
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Abstract
Alpinia zerumbet plantlets were cultured in vitro in MS medium supplemented with growth regulators, including IAA, TDZ and BAP. Using high performance liquid chromatography (HPLC), the production of rutin, kaempferol-3- O-glucuronide, and kaempferol-3 -O-rutinoside was evaluated, based on leaf hydroalcoholic extracts of three-month-old plantlets. The relative concentration of phenolics from the hydroalcoholic extracts of plantlets cultured in control medium reached 100% compared with plantlets treated with growth regulators and donor plants (80%). The in vitro rutin production was more pronounced than the other flavonoids. While no direct relation between the content of phenolic compounds and increased flavonoid production was observed, the combination of IAA + TDZ enhanced the production of rutin (83.2 μg/g dried leaves) and kaempferol-3- O-glucuronide (29 μg/g dried leaves), compared with growth regulators used alone. Overall, these findings suggest the value of in vitro cultivation as a means of enriching phenolic and flavonoid production in medicinal plants.
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Affiliation(s)
- Cristiane P. Victório
- Laboratório de Fisiologia Vegetal, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Celso Luiz S. Lage
- Laboratório de Fisiologia Vegetal, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ricardo M. Kuster
- Laboratório de Fitoquímica, Núcleo de Pesquisas de Produtos Naturais, UFRJ, Rio de Janeiro, Brazil
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Pinheiro MMG, Bessa SO, Fingolo CE, Kuster RM, Matheus ME, Menezes FS, Fernandes PD. Antinociceptive activity of fractions from Couroupita guianensis Aubl. leaves. J Ethnopharmacol 2010; 127:407-413. [PMID: 19861155 DOI: 10.1016/j.jep.2009.10.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2009] [Revised: 10/16/2009] [Accepted: 10/17/2009] [Indexed: 05/28/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Couroupitaguianensis Aubl. (Lecythidaceae) is popularly known in Brazil as "abricó-de-macaco". Infusions or teas obtained from its leaves, flowers, and barks are used in South America for the treatment of several disorders such as pain and inflammatory processes. AIM OF THE STUDY Evaluate antinociceptive effects of crude ethanol extract (CEE) and its fractions in three analgesic models (acetic acid-induced contortions, tail flick, and hot plate) and study the possible mechanism of their action. MATERIALS AND METHODS CEE, hexane, dichloromethane, ethyl acetate, and butanol fractions (10, 30, and 100mg/kg, p.o.) and the reference drug morphine (5mg/kg, s.c.) were evaluated. To elucidate the mechanism of action from the fractions, animals were pre-treated (30 min) with atropine (muscarinic receptor antagonist, 1mg/kg, s.c.), mecamylamine (nicotinic receptor antagonist, 2mg/kg, s.c.), naloxone (opioid receptor antagonist, 1mg/kg, s.c.) or L-nitro arginine methyl ester (L-NAME, nitric oxide synthase inhibitor, 3mg/kg, s.c.). RESULTS CEE and fractions significantly inhibited the number of contortions induced by acetic acid. All fractions showed antinociceptive activity in the tail flick model, being the hexane and ethyl acetate the most potent and long acting fractions. In the hot plate method the highest effect observed was at the dose of 100mg/kg from all fractions. Administration of naloxone inhibited the antinociceptive effect of fractions. Pre-treatment of mice with atropine reduced the antinociceptive activity of CEE and its fractions, the exception being the dichloromethane fraction. Mecamylamine did not inhibited the effect of dichloromethane fraction. L-NAME reduced the anti-hyperalgesic effect of all fractions, but the most prominent effect was observed in the antinociceptive activity caused by CEE and butanol fraction. CONCLUSIONS Results obtained demonstrated that Couroupita guianensis CEE and its fractions have antinociceptive activity that is mediated, at least in part, by opioid and cholinergic systems and nitric oxide pathway.
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Affiliation(s)
- Mariana M G Pinheiro
- Laboratório de Farmacologia da Inflamação e do Oxido Nítrico, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Oliveira AP, França HS, Kuster RM, Teixeira LA, Rocha LM. Chemical composition and antibacterial activity of Brazilian propolis essential oil. J Venom Anim Toxins Incl Trop Dis 2010. [DOI: 10.1590/s1678-91992010005000007] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Abstract
The current study aims to verify the best method for a rapid and efficient extraction of flavonoids from Alpinia zerumbet. Dried leaves were extracted using distillated water and ethanol 70% by extraction methods of shaking maceration, ultrasonic, microwave and stirring. By the application of TLC and reversed-phase HPLC techniques the rutin and kaempferol-3-O-glucuronide were detected. Ethanol 70% was more efficient for flavonoids extraction than water. No significant yielding variation was verified for ultrasonic, microwave and stirring methods using ethanol 70% (11 to 14%). Relative concentration of rutin and kaempferol-3-O-glucuronide, respectively, was higher by ultrasonic (1.5 and 5.62 mg g-1 dried leaves) and by microwave (1.0 and 6.64 mg g-1 dried leaves) methods using 70% ethanol. Rapid and simplified extraction proceeding optimize phytochemical work and acquisition of secondary metabolites.
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Abstract
The current study aims to verify the best method for a rapid and efficient extraction of flavonoids from Alpinia zerumbet. Dried leaves were extracted using distillated water and ethanol 70% by extraction methods of shaking maceration, ultrasonic, microwave and stirring. By the application of TLC and reversed-phase HPLC techniques the rutin and kaempferol-3-O-glucuronide were detected. Ethanol 70% was more efficient for flavonoids extraction than water. No significant yielding variation was verified for ultrasonic, microwave and stirring methods using ethanol 70% (11 to 14%). The relative concentration of rutin and kaempferol-3-O-glucuronide, respectively, was higher by ultrasonic (1.5 and 5.62 mg g-1 dried leaves, respectively) and by microwave (1.0 and 6.64 mg g-1 dried leaves) methods using ethanol. Rapid and simplified extraction proceeding optimize phytochemical work and acquisition of secondary metabolites.
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Gomes MMR, Cerqueira DM, Falcão DQ, Menezes FS, Wigg MD, Mendes GS, Martins FO, Silva JFM, Kuster RM, Romanos MT. IN VITRO ANTI-HSV-2 ACTIVITY OF ISOQUERCETIN FROM HYPTIS FASCICULATA BENTH. VR&R 2008. [DOI: 10.17525/vrr.v13i1-2.4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Falcão DQ, Costa ER, Alviano DS, Alviano CS, Kuster RM, Menezes FS. Atividade antioxidante e antimicrobiana de Calceolaria chelidonioides Humb. Bonpl. & Kunth. Rev bras farmacogn 2006. [DOI: 10.1590/s0102-695x2006000100013] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abstract
Thyroid peroxidase (TPO), the key enzyme in thyroid hormone biosynthesis, is inhibited by dietary flavonoids; thus, a high consumption of plants containing inhibitory flavonoids may affect thyroid function and lead to hypothyroidism. In this work, TPO inhibition by the aqueous partition of Myrcia uniflora and its isolated compounds has been evaluated. The aqueous partition of the methanolic extract of M. uniflora is able to inhibit TPO activity in vitro. Two known flavonoids were isolated and characterized by mass spectrometry and (1)H NMR from plant extracts: mearnsitrin and myricitrin. The degree of TPO inhibition produced by the aqueous solution of the flavonoids was very high, with a 50% inhibition of the original TPO activity (IC(50)) obtained at 1.97 microM mearnsitrin and at 2.88 microM myricitrin. These results suggest that the indiscriminated consumption of M. uniflora pharmaceutical products allied to the nutritional deficiency of iodine might contribute to the development of hypothyroidism and goiter.
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Affiliation(s)
- Andrea C F Ferreira
- Laboratório de Fisiologia Endócrina, Instituto de Biofísica Carlos Chagas Filho, Brazil
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Machado TB, Pinto AV, Pinto MCFR, Leal ICR, Silva MG, Amaral ACF, Kuster RM, Netto-dosSantos KR. In vitro activity of Brazilian medicinal plants, naturally occurring naphthoquinones and their analogues, against methicillin-resistant Staphylococcus aureus. Int J Antimicrob Agents 2003; 21:279-84. [PMID: 12636992 DOI: 10.1016/s0924-8579(02)00349-7] [Citation(s) in RCA: 130] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Fourteen extracts from Brazilian traditional medicinal plants used to treat infectious diseases were used to look for potential antimicrobial activity against multiresistant bacteria of medical importance. Staphylococcus aureus strains were susceptible to extracts of Punica granatum and Tabebuia avellanedae. The minimum inhibitory concentrations (MICs) of the total extracts and of additional fractions of these plants were determined by employing strains of methicillin-resistant (MRSA) and -sensitive (MSSA) S. aureus, including isolates of the PFGE clone A, which is prevalent in Brazil and two ATCC reference strains. A mixture of ellagitannins isolated from P. granatum and two naphthoquinones isolated from T. avellanedae demonstrated antibacterial activity against all S. aureus strains tested. Semi-synthetic furanonaphthoquinones (FNQs) showed lower MICs than those exhibited by natural occurring naphthoquinones. The results indicate that these natural products can be effective potential candidates for the development of new strategies to treat MRSA infections.
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Affiliation(s)
- T B Machado
- Núleo de Pesquisas de Productos Naturais, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Valverde AL, Cardoso GL, Pereira NA, Silva AJ, Kuster RM. Analgesic and antiinflammatory activities of vernonioside B2 fromVernonia condensata. Phytother Res 2001; 15:263-4. [PMID: 11351366 DOI: 10.1002/ptr.733] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Vernonioside B2 isolated from the methanol extract of the Brazilian herb Vernonia condensata Baker was evaluated in vivo for analgesic and antiinflammatory activities. The compound reduced writhings (93.28%) and Evans blue dye diffusion (91.80%) induced by acetic acid (0.1 N) in a dose-dependent manner.
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Affiliation(s)
- A L Valverde
- NPPN, Universidade Federal do Rio de Janeiro, CCS, Bloco H, Ilha do Fundão, Rio de Janeiro, Brazil, CEP 21941-590
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