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Rani D, Gulati V, Guleria M, Singh SP, Agarwal J. Aqueous synthesis of 2-aryl-3-nitro-2H chromenes via l-prolinamide mediated tandem oxa-Michael Henry reactions. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ramos YJ, da Costa-Oliveira C, Candido-Fonseca I, de Queiroz GA, Guimarães EF, Defaveri ACAE, Sadgrove NJ, Moreira DDL. Advanced Chemophenetic Analysis of Essential Oil from Leaves of Piper gaudichaudianum Kunth (Piperaceae) Using a New Reduction-Oxidation Index to Explore Seasonal and Circadian Rhythms. PLANTS 2021; 10:plants10102116. [PMID: 34685925 PMCID: PMC8540104 DOI: 10.3390/plants10102116] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 09/26/2021] [Accepted: 09/28/2021] [Indexed: 11/16/2022]
Abstract
The aromatic species Piper gaudichaudianum Kunth (Piperaceae) is widely used in Brazil for medicinal and ritualistic applications. In the current study, chemophenetic patterns were realized across season and circadian rhythm based on the chemical profile of essential oils (EOs) from leaves. Hydrodistilled essential oils were analyzed by GC-MS and GC-FID, and a new calculation of metabolite oxidation level, averaged for each individual molecule component of the EO, was used to explore the patterns of metabolism/biosynthesis. This new index used an intermediate calculation, the 'weighted average redox standard' (SRO), to enable a value for mixtures of metabolites to be generated, the 'general mixture redox index' (GMOR). The indices were subjected to a proof-of-concept approach by making comparison to outcomes from multivariate analyses, i.e., PCA and HCA. Chemical analysis demonstrated that the essential oils were dominated by sesquiterpenes, constructed of 15 classes of compound (C-skeletons), and 4 C-skeletons were recognized in the monoterpene group, giving a total of 19. The variation of chemical profiles was distinct at different phenological stages, but stronger chemical variation was evident between day and night as compared to season. Furthermore, due to comprehensive sampling across different regions, nine chemotypes were recognized, including those previously reported. The SRO and GMRO indices demonstrate that phenological variation of chemistry is mainly an outcome of redox fluctuations in terpene biosynthesis, changing from day to night. These indices also corroborate that chemical diversity is increased with oxidative metabolism. Lastly, the current study demonstrates pronounced phenotypic plasticity in P. gaudichaudianum, which makes it a suitable candidate to help further our understanding of chemophenetics and chemical ecology.
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Affiliation(s)
- Ygor Jessé Ramos
- Instituto de Biologia, Pós-Graduação em Biologia Vegetal, Universidade do Estado do Rio de Janeiro, Maracanã, Rio de Janeiro 20550-013, Brazil;
- Diretoria de Pesquisa do Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Jardim Botânico, Rio de Janeiro 22460-030, Brazil;
- Centro de Responsabilidade Socioambiental do Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Jardim Botânico, Rio de Janeiro 22460-030, Brazil; (G.A.d.Q.); (A.C.A.e.D.)
- Fundação Oswaldo Cruz, Farmanguinhos, Manguinhos, Rio de Janeiro 21041-250, Brazil; (C.d.C.-O.); (I.C.-F.)
| | - Claudete da Costa-Oliveira
- Fundação Oswaldo Cruz, Farmanguinhos, Manguinhos, Rio de Janeiro 21041-250, Brazil; (C.d.C.-O.); (I.C.-F.)
| | - Irene Candido-Fonseca
- Fundação Oswaldo Cruz, Farmanguinhos, Manguinhos, Rio de Janeiro 21041-250, Brazil; (C.d.C.-O.); (I.C.-F.)
| | - George Azevedo de Queiroz
- Centro de Responsabilidade Socioambiental do Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Jardim Botânico, Rio de Janeiro 22460-030, Brazil; (G.A.d.Q.); (A.C.A.e.D.)
| | - Elsie Franklin Guimarães
- Diretoria de Pesquisa do Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Jardim Botânico, Rio de Janeiro 22460-030, Brazil;
| | - Anna C. Antunes e Defaveri
- Centro de Responsabilidade Socioambiental do Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Jardim Botânico, Rio de Janeiro 22460-030, Brazil; (G.A.d.Q.); (A.C.A.e.D.)
| | | | - Davyson de Lima Moreira
- Instituto de Biologia, Pós-Graduação em Biologia Vegetal, Universidade do Estado do Rio de Janeiro, Maracanã, Rio de Janeiro 20550-013, Brazil;
- Diretoria de Pesquisa do Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Jardim Botânico, Rio de Janeiro 22460-030, Brazil;
- Fundação Oswaldo Cruz, Farmanguinhos, Manguinhos, Rio de Janeiro 21041-250, Brazil; (C.d.C.-O.); (I.C.-F.)
- Correspondence:
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Souza AA, Vessecchi R, Castro-Gamboa I, Furlan M. Combined use of tandem mass spectrometry and computational chemistry to study 2H-chromenes from Piper aduncum. JOURNAL OF MASS SPECTROMETRY : JMS 2019; 54:634-642. [PMID: 31144377 DOI: 10.1002/jms.4378] [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: 01/06/2019] [Revised: 05/14/2019] [Accepted: 05/17/2019] [Indexed: 06/09/2023]
Abstract
Natural 2H-chromenes were isolated from the crude extract of Piper aduncum (Piperaceae) and analyzed by electrospray ionization tandem mass spectrometry (ESI-MS/MS) applying collision-induced dissociation. Density functional theory (DFT) calculations were used to explain the preferred protonation sites of the 2H-chromenes based on thermochemical parameters, including atomic charges, proton affinity, and gas-phase basicity. After identifying the nucleophilic sites, the pathways were proposed to justify the formation of the diagnostic ions under ESI-MS/MS conditions. The calculated relative energy for each pathway was in good agreement with the energy-resolved plot obtained from ESI-MS/MS data. Moreover, the 2H-chromene underwent proton attachment on the prenyl moiety via a six-membered transition state. This behavior resulted in the formation of a diagnostic ion due to 2-methylpropene loss. These studies provide novel insights into gas-phase dissociation for natural benzopyran compounds, indicating how reactivity is correlated to the intrinsic acid-base equilibrium and structural aspects, including the substitution pattern on the aromatic moiety. Therefore, these results can be applied in the identification of benzopyran derivatives in a variety of biological samples.
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Affiliation(s)
- Amauri Alves Souza
- Universidade Estadual Paulista - UNESP, Instituto de Química, Rua Professor Francisco Degni, 55, Araraquara, SP, 14800-900, Brazil
| | - Ricardo Vessecchi
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Avenida Bandeirantes, 3900, Ribeirão Preto, SP, 14040-901, Brazil
| | - Ian Castro-Gamboa
- Universidade Estadual Paulista - UNESP, Instituto de Química, Rua Professor Francisco Degni, 55, Araraquara, SP, 14800-900, Brazil
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Formagio-Neto F, Volobuff CRF, Pederiva MMC, Pereira ZV, Sarragiotto MH, Cardoso CAL, Kassuya CAL, Formagio ASN. Anti-inflammatory action of an alkaloid, fraction and extract from Alchornea glandulosa in mice. JOURNAL OF ETHNOPHARMACOLOGY 2019; 231:66-72. [PMID: 30395975 DOI: 10.1016/j.jep.2018.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 10/12/2018] [Accepted: 11/01/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Alchornea glandulosa (Euphorbiaceae) has traditionally been used in medicine for treating immune-mediated inflammatory diseases. AIM OF STUDY This work aimed to evaluate the anti-inflammatory effects of a methanolic extract of leaves from A. glandulosa (MEAG), as well as the ethyl acetate fraction (EAFAG) and isolated compound guanidine alkaloid N-1, N-2, N-3-triisopentenylguanidine (AG-1), in experimental in vivo models of inflammation in mice. We also investigated this extract's phenols, flavonoids and flavonol compounds. MATERIALS AND METHODS MEAG (extracted by maceration with methanol), EAFAG (fraction resulting from the partition of the methanolic extract with ethyl acetate) and AG-1 (alkaloid isolated by chromatographic methods) were analysed. MEAG and EAFAG were analysed by HPLC/DAD. The effects of MEAG (30, 100 and 300 mg/kg), EAFAG (30, 100 and 300 mg/kg) and AG-1 (5 and 30 mg/kg) were studied in the following experimental mouse models: paw oedema and myeloperoxidase (MPO) activity, croton-oil-induced ear oedema, leukocyte migration in a pleurisy model induced by carrageenan and zymosan induction of joint inflammation. RESULTS MEAG and EAFAG were analysed by LC/DAD, and phenolic acids (gallic acid and caffeic acid) and flavonoids (myricetin-3-O-α-rhamnopyranoside and quercetin) were detected. MEAG, EAFAG and AG-1 were used in the carrageenan-induced paw oedema model and showed maximum inhibitions of 60.10% (MEAG, 2 h, 300 mg/kg) and 66.21% (EAFAG, 2 h, 300 mg/kg). AG-1 at 5 mg/kg showed significant inhibition, ranging from 60.92% to 63.13%, at all evaluated times, and the 30 mg/kg dose showed inhibition of 42.12% (1 h) and 40.36% (2 h). MEAG (37%, 46.1% and 68.11%) and EAFAG (31%, 42.21% and 48.93%), at doses of 30, 100 and 300 mg/kg, respectively, significantly reduced the increase in MPO activity, and AG-1 (5 and 30 mg/kg) showed inhibition of 64.62% and 65.12%, respectively. In the pleurisy model, MEAG (300 mg/kg), EAFAG (300 mg/kg) and AG-1 (30 mg/kg) significantly reduced the migration of total leukocytes with maximal inhibition of 80.90%, 83.17% and 89.39%, respectively. In the croton oil model, pretreatment with MEAG (0.1, 0.3 and 1 mg/ear) increased the diameter of the right ear (30.32%, 48.87% and 53.09%, respectively). Finally, MEAG (100 and 300 mg/kg; 33.11% and 56.03%) and EAFAG (100 and 300 mg/kg; 36.89% and 50.53%) reduced zymosan-induced oedema formation. CONCLUSIONS To the best of our knowledge, these results are the first to demonstrate that A. glandulosa exhibits oral and topical anti-inflammatory activity. This study detected alkaloid and phenol/polyphenolic compounds in A. glandulosa, which may help to explain the ethnobotanical use of this plant in traditional medicine in Brazil to treat immune-mediated inflammatory diseases.
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Affiliation(s)
| | | | | | - Zefa Valdevina Pereira
- Federal University of Grande Dourados, Faculty of Biological and Environmental Sciences, Dourados, MS, Brazil.
| | | | | | | | - Anelise Samara Nazari Formagio
- Federal University of Grande Dourados, Faculty of Health Science, Dourados, MS, Brazil; Federal University of Grande Dourados, Faculty of Biological and Environmental Sciences, Dourados, MS, Brazil.
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Batista ANL, Santos-Pinto JRAD, Batista JM, Souza-Moreira TM, Santoni MM, Zanelli CF, Kato MJ, López SN, Palma MS, Furlan M. The Combined Use of Proteomics and Transcriptomics Reveals a Complex Secondary Metabolite Network in Peperomia obtusifolia. JOURNAL OF NATURAL PRODUCTS 2017; 80:1275-1286. [PMID: 28422496 DOI: 10.1021/acs.jnatprod.6b00827] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Peperomia obtusifolia, an ornamental plant from the Piperaceae family, accumulates a series of secondary metabolites with interesting biological properties. From a biosynthesis standpoint, this species produces several benzopyrans derived from orsellinic acid, which is a polyketide typically found in fungi. Additionally, the chiral benzopyrans were reported as racemic and/or as diastereomeric mixtures, which raises questions about the level of enzymatic control in the cyclization step for the formation of the 3,4-dihydro-2H-pyran moiety. Therefore, this article describes the use of shotgun proteomic and transcriptome studies as well as phytochemical profiling for the characterization of the main biosynthesis pathways active in P. obtusifolia. This combined approach resulted in the identification of a series of proteins involved in its secondary metabolism, including tocopherol cyclase and prenyltransferases. The activity of these enzymes was supported by the phytochemical profiling performed in different organs of P. obtusifolia. However, the polyketide synthases possibly involved in the production of orsellinic acid could not be identified, suggesting that orsellinic acid may be produced by endophytes intimately associated with the plant.
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Affiliation(s)
- Andrea N L Batista
- Instituto de Química, Universidade Estadual Paulista (Unesp) , Araraquara, SP 14800-060, Brazil
| | | | - João M Batista
- Departamento de Química, Universidade Federal de São Carlos-UFSCar , São Carlos, SP 13565-905, Brazil
| | - Tatiana M Souza-Moreira
- Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista (Unesp) , Araraquara, SP 14801-902, Brazil
| | - Mariana M Santoni
- Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista (Unesp) , Araraquara, SP 14801-902, Brazil
| | - Cleslei F Zanelli
- Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista (Unesp) , Araraquara, SP 14801-902, Brazil
| | - Massuo J Kato
- Instituto de Química, Universidade de São Paulo-USP , São Paulo, SP 05508-000, Brazil
| | - Silvia N López
- CONICET, Farmacognosia, Facultad de Ciencias Bioquı́micas y Farmacéuticas, Universidad Nacional de Rosario , Rosario, Santa Fe S2002LRK, Argentina
| | - Mario S Palma
- Instituto de Biociências, Universidade Estadual Paulista (Unesp) , Rio Claro, SP 13506-900, Brazil
| | - Maysa Furlan
- Instituto de Química, Universidade Estadual Paulista (Unesp) , Araraquara, SP 14800-060, Brazil
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Gaia AM, Yamaguchi LF, Jeffrey CS, Kato MJ. Age-dependent changes from allylphenol to prenylated benzoic acid production in Piper gaudichaudianum Kunth. PHYTOCHEMISTRY 2014; 106:86-93. [PMID: 25041698 DOI: 10.1016/j.phytochem.2014.06.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Revised: 05/30/2014] [Accepted: 05/31/2014] [Indexed: 05/24/2023]
Abstract
HPLC-DAD and principal component analysis (PCA) of the (1)H NMR spectrum of crude plant extracts showed high chemical variability among seedlings and adult organs of Piper gaudichaudianum. While gaudichaudianic acid was the major compound in the adult leaves, apiole and dillapiole were the major compounds in their seedling leaves. By the 15th month of seedling growth, the levels of apiole and dillapiole decreased and gaudichaudianic acid appeared along with two compounds, biosynthetically related to gaudichaudianic acid.
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Affiliation(s)
- Anderson M Gaia
- Research Support Center in Molecular Diversity of Natural Products, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil
| | - Lydia F Yamaguchi
- Research Support Center in Molecular Diversity of Natural Products, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil
| | | | - Massuo J Kato
- Research Support Center in Molecular Diversity of Natural Products, Institute of Chemistry, University of São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil.
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Lopes AA, Pina ES, Silva DB, Pereira AMS, da Silva MFDGF, Da Costa FB, Lopes NP, Pupo MT. A biosynthetic pathway of sesquiterpene lactones in Smallanthus sonchifolius and their localization in leaf tissues by MALDI imaging. Chem Commun (Camb) 2013; 49:9989-91. [DOI: 10.1039/c3cc46213g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Hemmerlin A, Harwood JL, Bach TJ. A raison d'être for two distinct pathways in the early steps of plant isoprenoid biosynthesis? Prog Lipid Res 2011; 51:95-148. [PMID: 22197147 DOI: 10.1016/j.plipres.2011.12.001] [Citation(s) in RCA: 205] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Revised: 11/28/2011] [Accepted: 12/05/2011] [Indexed: 12/12/2022]
Abstract
When compared to other organisms, plants are atypical with respect to isoprenoid biosynthesis: they utilize two distinct and separately compartmentalized pathways to build up isoprene units. The co-existence of these pathways in the cytosol and in plastids might permit the synthesis of many vital compounds, being essential for a sessile organism. While substrate exchange across membranes has been shown for a variety of plant species, lack of complementation of strong phenotypes, resulting from inactivation of either the cytosolic pathway (growth and development defects) or the plastidial pathway (pigment bleaching), seems to be surprising at first sight. Hundreds of isoprenoids have been analyzed to determine their biosynthetic origins. It can be concluded that in angiosperms, under standard growth conditions, C₂₀-phytyl moieties, C₃₀-triterpenes and C₄₀-carotenoids are made nearly exclusively within compartmentalized pathways, while mixed origins are widespread for other types of isoprenoid-derived molecules. It seems likely that this coexistence is essential for the interaction of plants with their environment. A major purpose of this review is to summarize such observations, especially within an ecological and functional context and with some emphasis on regulation. This latter aspect still requires more work and present conclusions are preliminary, although some general features seem to exist.
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Affiliation(s)
- Andréa Hemmerlin
- Institut de Biologie Moléculaire des Plantes du Centre National de la Recherche Scientifique, IBMP-CNRS-UPR2357, Université de Strasbourg, 28 Rue Goethe, F-67083 Strasbourg Cedex, France.
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Batista JM, Batista ANL, Rinaldo D, Vilegas W, Ambrósio DL, Cicarelli RMB, Bolzani VS, Kato MJ, Nafie LA, López SN, Furlan M. Absolute configuration and selective trypanocidal activity of gaudichaudianic acid enantiomers. JOURNAL OF NATURAL PRODUCTS 2011; 74:1154-1160. [PMID: 21506530 DOI: 10.1021/np200085h] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Gaudichaudianic acid, a prenylated chromene isolated from Piper gaudichaudianum, has been described as a potent trypanocidal compound against the Y-strain of Trypanosoma cruzi. We herein describe its isolation as a racemic mixture followed by enantiomeric resolution using chiral HPLC and determination of the absolute configuration of the enantiomers as (+)-S and (-)-R by means of a combination of electronic and vibrational circular dichroism using density functional theory calculations. Investigation of the EtOAc extract of the roots, stems, and leaves from both adult specimens and seedlings of P. gaudichaudianum revealed that gaudichaudianic acid is biosynthesized as a racemic mixture from the seedling stage onward. Moreover, gaudichaudianic acid was found exclusively in the roots of seedlings, while it is present in all organs of the adult plant. Trypanocidal assays indicated that the (+)-enantiomer was more active than its antipode. Interestingly, mixtures of enantiomers showed a synergistic effect, with the racemic mixture being the most active.
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Affiliation(s)
- João M Batista
- Departamento de Química Orgânica, Instituto de Química, Universidade Estadual Paulista (UNESP), Araraquara, SP 14800-900, Brazil.
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Srivastava N, Akhila A. Biosynthesis of andrographolide in Andrographis paniculata. PHYTOCHEMISTRY 2010; 71:1298-304. [PMID: 20557910 DOI: 10.1016/j.phytochem.2010.05.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2010] [Revised: 05/25/2010] [Accepted: 05/25/2010] [Indexed: 05/21/2023]
Abstract
Andrographolide, a diterpene lactone, is isolated from Andrographis paniculata which is well known for its medicinal properties. The biosynthetic route to andrographolide was studied using [1-(13)C]acetate, [2-(13)C]acetate and [1,6-(13)C(2)]glucose. The peak enrichment of eight carbon atoms in the (13)C NMR spectra of andrographolide suggested that deoxyxylulose pathway (DXP) is the major biosynthetic pathway to this diterpene. The contribution of the mevalonic acid pathway (MVA) is indicated by the observed (13)C-labeling pattern, and because the labeling patterns indicate a simultaneous contribution of both methyl erythritol phosphate (MEP) and MVA pathways it can be deduced that cross-talk occurs between plastids and cytoplasm.
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Affiliation(s)
- Nishi Srivastava
- Central Institute of Medicinal and Aromatic Plants, Lucknow 226 015, India
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Péres VF, Moura DJ, Sperotto ARM, Damasceno FC, Caramão EB, Zini CA, Saffi J. Chemical composition and cytotoxic, mutagenic and genotoxic activities of the essential oil from Pipergaudichaudianum Kunth leaves. Food Chem Toxicol 2009; 47:2389-95. [PMID: 19563855 DOI: 10.1016/j.fct.2009.06.035] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2009] [Revised: 05/14/2009] [Accepted: 06/24/2009] [Indexed: 11/27/2022]
Abstract
We have investigated the chemical composition of Piper gaudichaudianum essential oil, as well as its cytotoxic, mutagenic and genotoxic effects in V79 cells. The chemical analyses showed that the major compounds are (E)-nerolidol (22.4%), alpha-humulene (16.5%), (E)-caryophyllene (8.9%) and bicyclogermacrene (7.4%). Dose-dependent cytotoxic effects were observed in V79 cells treated with essential oil by using clonal survival, 3-(4,5-dimethylthiazole-2-yl)-2,5-biphenyl tetrazolium bromide reduction assay (MTT) and trypan blue exclusion assay (TB), and a significant decrease in survival was observed at concentrations of 0.5 microg/mL and higher. The P. gaudichaudianum essential oil treatment caused DNA strand breaks in V79 cells at concentrations up to 2 microg/mL, as detected by the alkaline comet assay, but did not induce double-strand breaks, as verified by neutral comet assay. It induced a significant increase in the frequency of micronucleated cells at 4, 6 and 10 microg/mL. Moreover, P. gaudichaudianum essential oil significantly increased lipid peroxidation at doses of 0.5 microg/mL and higher, suggesting that the observed oxidant potential can be responsible, at least in part, for its cytotoxic and genotoxic effects.
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Affiliation(s)
- V F Péres
- Laboratório de Genética Toxicológica, Programa de Pós-Graduação em Genética e Toxicologia Aplicada, Universidade Luterana do Brasil, Canoas, RS, Brazil.
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Ramos CS, Vanin SA, Kato MJ. Sequestration of prenylated benzoic acid and chromenes by Naupactus bipes (Coleoptera: Curculionidae) feeding on Piper gaudichaudianum (Piperaceae). CHEMOECOLOGY 2009. [DOI: 10.1007/s00049-009-0011-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kolewe ME, Gaurav V, Roberts SC. Pharmaceutically Active Natural Product Synthesis and Supply via Plant Cell Culture Technology. Mol Pharm 2008; 5:243-56. [DOI: 10.1021/mp7001494] [Citation(s) in RCA: 189] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Martin E. Kolewe
- Department of Chemical Engineering, University of Massachusetts, Amherst, 686 North Pleasant Street, Amherst, Massachusetts 10003
| | - Vishal Gaurav
- Department of Chemical Engineering, University of Massachusetts, Amherst, 686 North Pleasant Street, Amherst, Massachusetts 10003
| | - Susan C. Roberts
- Department of Chemical Engineering, University of Massachusetts, Amherst, 686 North Pleasant Street, Amherst, Massachusetts 10003
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