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Coqueiro A, Fernandes DC, Danuello A, Regasini LO, Cardoso-Lopes EM, Young MCM, Brandão Torres LM, Campos VP, Silva DHS, da Silva Bolzani V, de Oliveira DF. Nematostatic activity of isoprenylated guanidine alkaloids from Pterogyne nitens and their interaction with acetylcholinesterase. Exp Parasitol 2023; 250:108542. [PMID: 37178971 DOI: 10.1016/j.exppara.2023.108542] [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: 02/09/2023] [Revised: 04/03/2023] [Accepted: 05/03/2023] [Indexed: 05/15/2023]
Abstract
Although new nematicides have appeared, the demand for new products less toxic and more efficient for the control of plant-parasitic nematodes are still high. Consequently, studies on natural secondary metabolites from plants, to develop new nematicides, have increased. In this work, nineteen extracts from eleven Brazilian plant species were screened for activity against Meloidogyne incognita. Among them, the extracts of Piterogyne nitens showed a potent nematostatic activity. The alkaloid fraction obtained from the ethanol extract of leaves of P. nitens was more active than the coming extract. Due to the promising activity from the alkaloid fraction, three isoprenylated guanidine alkaloids isolated from this fraction, galegine (1), pterogynidine (2), and pterogynine (3) were tested, showing similar activity to the alkaloid fraction, which was comparable to that of the positive control Temik at 250 μg/mL. At lower concentrations (125-50 μg/mL), compound 2 showed to be the most active one. As several nematicides act through inhibition of acetylcholinesterase (AChE), the guanidine alkaloids were also employed in two in vitro AChE assays. In both cases, compound 2 was more active than compounds 1 and 3. Its activity was considered moderated compared to the control (physostigmine). Compound 2 was selected for an in silico study with the electric eel (Electrophorus electricus) AChE, showing to bind mostly to the same site of physostigmine in the AChEs, pointing out that this could be the mechanism of action for this compound. These results suggested that the guanidine alkaloids 1,2 and 3 from P. nitens are promising for the development of new products to control M. incognita, especially guanidine 2, and encourage new investigations to confirm the mechanism of action, as well as to determine the structure-activity relationship of the guanidine alkaloids.
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Affiliation(s)
- Aline Coqueiro
- Nuclei of Bioassays, Biosynthesis and Ecophysiology of Natural Products (NuBBE), Department of Organic Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, SP, 14801-970, Brazil; Department of Chemistry, Federal University of Technology - Paraná (UTFPR), Ponta Grossa, PR, 84017-220, Brazil.
| | - Daniara Cristina Fernandes
- Nuclei of Bioassays, Biosynthesis and Ecophysiology of Natural Products (NuBBE), Department of Organic Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, SP, 14801-970, Brazil; Federal Institute of Education, Science and Technology of São Paulo (IFSP), Matão, SP, 15991-502, Brazil
| | - Amanda Danuello
- Nuclei of Bioassays, Biosynthesis and Ecophysiology of Natural Products (NuBBE), Department of Organic Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, SP, 14801-970, Brazil; Institute of Chemistry, Federal University of Uberlândia (UFU), Uberlândia, MG, 38408-100, Brazil
| | - Luis Octávio Regasini
- Nuclei of Bioassays, Biosynthesis and Ecophysiology of Natural Products (NuBBE), Department of Organic Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, SP, 14801-970, Brazil
| | | | | | | | - Vicente Paulo Campos
- Department of Phytopathology, Federal University of Lavras (UFLA), Lavras, MG, 37200-000, Brazil
| | - Dulce Helena Siqueira Silva
- Nuclei of Bioassays, Biosynthesis and Ecophysiology of Natural Products (NuBBE), Department of Organic Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, SP, 14801-970, Brazil
| | - Vanderlan da Silva Bolzani
- Nuclei of Bioassays, Biosynthesis and Ecophysiology of Natural Products (NuBBE), Department of Organic Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, SP, 14801-970, Brazil
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Silva DHS, Mannochio-Russo H, Lago JHG, Bueno PCP, Medina RP, Bolzani VDS, Vilegas W, Nunes WDG. Bioprospecting as a strategy for conservation and sustainable use of the Brazilian Flora. Biota Neotrop 2022. [DOI: 10.1590/1676-0611-bn-2022-1356] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Abstract In Brazil, research with natural products had a strong impulse when FAPESP supported the creation of the Laboratory of Chemistry of Natural Products of the Institute of Chemistry of USP (1966). In 1999, FAPESP launched the Research Program in the Characterization, Conservation, Restoration and Sustainable Use of Biodiversity (BIOTA-FAPESP), which intensified the sustainable exploitation of biodiversity, and which evolved to form the Biota Network for Bioprospection and Bioassays (BIOprospecTA), which integrates groups from all over the country, optimizing the use of the skills already installed for the bioprospecting of microorganisms, plants, invertebrates, vertebrates and marine organisms. Of the 104 projects related to plant sciences, 35 carried out bioprospection of Brazilian flora, belonging to the areas of Chemistry, Botany, Genetics, Plant Physiology, Plant Morphology, Plant (Chemo)taxonomy, Ecosystem Ecology, Plant Genetics. Physical Sciences, Forest Resources, Forestry Engineering, Agronomy, leading to thousands of publications, engagement of hundreds of students and a deeper understanding of natural products in different biological models through macromolecules analysis aided by computational and spectrometric strategies, in addition to pharmacological evaluations. The development of omics approaches led to a more comprehensive view of the chemical profile of an organism, and enabled integrated and concomitant studies of several samples, and faster annotation of known molecules, through the use of hyphenated and chemometric techniques, and molecular networking. This also helped to overcome the lack of information on the safety and efficacy of herbal preparations, in projects dealing with the standardization of herbal products, according to international standards. The BIOTA-FAPESP program has also focused on environmental aspects, in accordance with the principles of Green Chemistry and has had positive effects on international collaboration, on the number and impact of scientific publications and on partnership with companies, a crucial step to add value and expand the production chain of bioproducts. Also, the compilation, systematization and sharing of data were contemplated with the creation of the NUBBEDB database, of free access, and that integrates with international databases (ACD/labs, American Chemical Society – ACS), helping researchers and companies in the development from different areas of science, technology, strengthening the bioeconomy and subsidizing public policies.
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Alves MDS, Fugisaki LRDO, Dos Santos JD, Scorzoni L, Medina RP, Silva DHS, Junqueira JC. Antifungal effects of Streptococcus mutans extract on Candida strains susceptible and resistant to fluconazole: An in vivo study. Med Mycol 2021; 59:744-747. [PMID: 33594432 DOI: 10.1093/mmy/myab008] [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: 10/01/2020] [Revised: 01/11/2021] [Accepted: 01/26/2021] [Indexed: 11/12/2022] Open
Abstract
Previous studies showed that the crude extract obtained from Streptococcus mutans inhibited the growth of Candida albicans reference strains. In this study, we evaluated whether the antifungal effects of S. mutans extract can be extended to clinical Candida isolates, including C. albicans and non-abicans strains with different susceptibilities to fluconazole. We verified that S. mutans extract increased the survival of Galleria mellonella larvae infected with C. albicans and C. glabrata and inhibited the fungal cells in hemolymph. These antifungal effects occurred for both fluconazole-susceptible and fluconazole-resistant strains. However, larvae infected by C. krusei were not affected by S. mutans extract. LAY SUMMARY Streptococcus mutans crude extract shows antifungal effects on clinical Candida strains susceptible and resistant to fluconazole in Galleria mellonella model.
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Affiliation(s)
- Mariana de Sá Alves
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University (UNESP), São José dos Campos, 12245-000, SP, Brazil
| | - Luciana Ruano de Oliveira Fugisaki
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University (UNESP), São José dos Campos, 12245-000, SP, Brazil
| | - Jéssica Diane Dos Santos
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University (UNESP), São José dos Campos, 12245-000, SP, Brazil
| | - Liliana Scorzoni
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University (UNESP), São José dos Campos, 12245-000, SP, Brazil
| | - Rebeca Previate Medina
- Department of Organic Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, 14800-900, SP, Brazil
| | - Dulce Helena Siqueira Silva
- Department of Organic Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, 14800-900, SP, Brazil
| | - Juliana Campos Junqueira
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University (UNESP), São José dos Campos, 12245-000, SP, Brazil
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Falqueto SA, Pitaluga BF, de Sousa JR, Targanski SK, Campos MG, de Oliveira Mendes TA, da Silva GF, Silva DHS, Soares MA. Bacillus spp. metabolites are effective in eradicating Aedes aegypti (Diptera: Culicidae) larvae with low toxicity to non-target species. J Invertebr Pathol 2020; 179:107525. [PMID: 33383067 DOI: 10.1016/j.jip.2020.107525] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 10/17/2020] [Revised: 12/14/2020] [Accepted: 12/23/2020] [Indexed: 11/18/2022]
Abstract
The growing spread of dengue, chikungunya and Zika viruses demand the development of new and environmentally safe control methods for their vector, the mosquito Aedes aegypti. This study aims to find novel larvicidal agents from mutualistic (endophytic and rhizospheric) or edaphic bacteria that have no action against non-target organisms. Eleven out of the 254 bacterial strains tested were able to kill Ae. aegypti larvae. Larvicidal activity did not depend on presence of cells, since culture supernatants or crude lipopeptide extracts (CLEs) killed the larvae. Bacillus safensis BacI67 and Bacillus paranthracis C21 supernatants were the best performing supernatants, displaying the lowest lethal concentrations (LC50 = 31.11 µL/mL and 45.84 µL/mL, respectively). Bacillus velezensis B64a and Bacillus velezensis B15 produced the best performing CLEs (LC50 = 0.11 mg/mL and 0.12 mg/mL, respectively). Mass spectrometry analysis of CLEs detected a mixture of surfactins, iturins, and fengycins. The samples tested were weakly- or non-toxic to mammalian cells (RAW 264.7 macrophages and VERO cells) and non-target organisms (Caenorhabditis elegans, Galleria mellonella, Scenedesmus obliquus, and Tetrahymena pyriformis) - especially B. velezensis B15 CLE. The biosynthetic gene clusters related to secondary metabolism identified by whole genome sequencing of the four best performing bacteria strains revealed clusters for bacteriocin, beta-lactone, lanthipeptide, non-ribosomal peptide synthetases, polyketide synthases (PKS), siderophores, T3PKS, type 1 PKS-like, terpenes, thiopeptides, and trans-AT-PKS. Purification of lipopeptides may clarify the mechanisms by which these extracts kill Ae. aegypti larvae.
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Affiliation(s)
- Silvia Altoé Falqueto
- Departamento de Botânica e Ecologia, Universidade Federal de Mato Grosso, Av. Fernando Corrêa da Costa 2367, 78060-900 Cuiabá, Brazil
| | - Bruno Faria Pitaluga
- Departamento de Botânica e Ecologia, Universidade Federal de Mato Grosso, Av. Fernando Corrêa da Costa 2367, 78060-900 Cuiabá, Brazil
| | - Janaína Rosa de Sousa
- Departamento de Botânica e Ecologia, Universidade Federal de Mato Grosso, Av. Fernando Corrêa da Costa 2367, 78060-900 Cuiabá, Brazil
| | - Sabrina Ketrin Targanski
- Departamento de Botânica e Ecologia, Universidade Federal de Mato Grosso, Av. Fernando Corrêa da Costa 2367, 78060-900 Cuiabá, Brazil
| | - Mateus Gandra Campos
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Viçosa, Brazil
| | | | | | - Dulce Helena Siqueira Silva
- Centro de Inovação em Biodiversidade e Fármacos, Instituto de Química, Universidade Estadual Paulista Júlio de Mesquita Filho, Araraquara, Brazil
| | - Marcos Antônio Soares
- Departamento de Botânica e Ecologia, Universidade Federal de Mato Grosso, Av. Fernando Corrêa da Costa 2367, 78060-900 Cuiabá, Brazil.
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5
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de Oliveira Filho JWG, Andrade TDJADS, de Lima RMT, Dos Reis AC, Silva DHS, Santos JVDO, de Menezes AAPM, da Mata AMO, Dias ACS, de Alencar MVOB, Paz MFCJ, Moreno LCGEAI, Islam MT, Mubarak MS, Sousa JMDCE, Melo Cavalcante AADC. Citrinin against breast cancer: A cytogenotoxicological study. Phytother Res 2020; 35:504-516. [PMID: 32869401 DOI: 10.1002/ptr.6830] [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: 04/01/2020] [Revised: 06/30/2020] [Accepted: 07/11/2020] [Indexed: 11/10/2022]
Abstract
Breast cancer is one of the most lethal types of cancer and a leading cause of mortality among Women worldwide. Citrinin (CIT), a polyketide extracted from the fungus Penicillium citrinum, exhibits a wide range of biological activities such as antibacterial, antifungal, and cytotoxic effects. The aim of the current study was to evaluate the antitumoral effects of CIT against 7,12-dimethylbenzanthracene (DMBA)-induced mammary carcinoma in Swiss mice For this, CIT, DMBA and the standard cyclophosphamide (CPA) induced behavioral changes in experimental animals, and these changes were screened by using the rota rod and open field tests. Additionally, hematological, biochemical, immuno-histochemical, and histopathological analyses were carried out. Results suggest that CIT did not alter behavioral, hematological, and biochemical parameters in mice. DMBA induced invasive mammary carcinoma and showed genotoxic effects in the breasts, bone marrow, lymphocytes, and hepatic cells. It also caused mutagenic effects in the formation of micronuclei, bridges, shoots, and binucleate cells in bone marrow and liver. CIT and CPA genotoxic effects were observed after 3 weeks of therapy, where CIT exhibited a repair capacity and induced significant apoptotic damage in mouse lymphocytes. In conclusion, CIT showed antitumoral effects in Swiss mice, possibly through induction of apoptosis.
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Affiliation(s)
- José Williams Gomes de Oliveira Filho
- Northeast Biotechnology Network (RENORBIO), Postgraduate Program in Biotechnology, Federal University of Piauí - UFPI, Teresina, Piauí, Brazil.,Laboratory of Research in Toxicological Genetics - LAPGENIC, Federal University of Piauí, Teresina, Piauí, Brazil.,Federal Institute of Piauí (IFPI), Teresina, Piauí, Brazil
| | | | - Rosália Maria Tôrres de Lima
- Northeast Biotechnology Network (RENORBIO), Postgraduate Program in Biotechnology, Federal University of Piauí - UFPI, Teresina, Piauí, Brazil
| | - Antonielly Campinho Dos Reis
- Laboratory of Research in Toxicological Genetics - LAPGENIC, Federal University of Piauí, Teresina, Piauí, Brazil
| | - Dulce Helena Siqueira Silva
- Nucleus of Bioassays, Biosynthesis and Ecophysiology of Natural Products (NuBBE), Department of Organic Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | | | | | - Ana Maria Oliveira da Mata
- Laboratory of Research in Toxicological Genetics - LAPGENIC, Federal University of Piauí, Teresina, Piauí, Brazil
| | - Ana Carolina Soares Dias
- Laboratory of Genetics and Molecular Biology, Federal University of Maranhão, São Luís, Maranhão, Brazil
| | | | | | | | - Muhammad Torequl Islam
- Laboratory of Theoretical and Computational Biophysics, Ton Duc Thang University, Ho Chi Minh City, Vietnam.,Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | | | - João Marcelo de Castro E Sousa
- Northeast Biotechnology Network (RENORBIO), Postgraduate Program in Biotechnology, Federal University of Piauí - UFPI, Teresina, Piauí, Brazil.,Laboratory of Pharmaceutical Nanosystems - NANOSFAR, Federal University of Piauí, Teresina, Piauí, Brazil
| | - Ana Amélia de Carvalho Melo Cavalcante
- Northeast Biotechnology Network (RENORBIO), Postgraduate Program in Biotechnology, Federal University of Piauí - UFPI, Teresina, Piauí, Brazil.,Laboratory of Pharmaceutical Nanosystems - NANOSFAR, Federal University of Piauí, Teresina, Piauí, Brazil
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6
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Rossoni RD, de Barros PP, Mendonça IDC, Medina RP, Silva DHS, Fuchs BB, Junqueira JC, Mylonakis E. The Postbiotic Activity of Lactobacillus paracasei 28.4 Against Candida auris. Front Cell Infect Microbiol 2020; 10:397. [PMID: 32850495 PMCID: PMC7417517 DOI: 10.3389/fcimb.2020.00397] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [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: 02/14/2020] [Accepted: 06/29/2020] [Indexed: 12/11/2022] Open
Abstract
Candida auris has emerged as a medically important pathogen with considerable resistance to antifungal agents. The ability to produce biofilms is an important pathogenicity feature of this species that aids escape of host immune responses and antimicrobial agents. The objective of this study was to verify antifungal action using in vitro and in vivo models of the Lactobacillus paracasei 28.4 probiotic cells and postbiotic activity of crude extract (LPCE) and fraction 1 (LPF1), derived from L. paracasei 28.4 supernatant. Both live cells and cells free supernatant of L. paracasei 28.4 inhibited C. auris suggesting probiotic and postbiotic effects. The minimum inhibitory concentration (MIC) for LPCE was 15 mg/mL and ranges from 3.75 to 7.5 mg/mL for LPF1. Killing kinetics determined that after 24 h treatment with LPCE or LPF1 there was a complete reduction of viable C. auris cells compared to fluconazole, which decreased the initial inoculum by 1-logCFU during the same time period. LPCE and LPF1 significantly reduced the biomass (p = 0.0001) and the metabolic activity (p = 0.0001) of C. auris biofilm. There was also a total reduction (~108 CFU/mL) in viability of persister C. auris cells after treatment with postbiotic elements (p < 0.0001). In an in vivo study, injection of LPCE and LPF1 into G. mellonella larvae infected with C. auris prolonged survival of these insects compared to a control group (p < 0.05) and elicited immune responses by increasing the number of circulating hemocytes and gene expression of antimicrobial peptide galiomicin. We concluded that the L. paracasei 28.4 cells and postbiotic elements (LPCE and LPF1) have antifungal activity against planktonic cells, biofilms, and persister cells of C. auris. Postbiotic supplementation derived from L. paracasei 28.4 protected G. mellonella infected with C. auris and enhanced its immune status indicating a dual function in modulating a host immune response.
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Affiliation(s)
- Rodnei Dennis Rossoni
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University/UNESP, São José dos Campos, Brazil.,Division of Infectious Diseases, Rhode Island Hospital, Warren Alpert Medical School at Brown University, Providence, RI, United States
| | - Patrícia Pimentel de Barros
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University/UNESP, São José dos Campos, Brazil.,Division of Infectious Diseases, Rhode Island Hospital, Warren Alpert Medical School at Brown University, Providence, RI, United States
| | - Iatã do Carmo Mendonça
- Department of Organic Chemistry, Center for Bioassays, Biosynthesis and Ecophysiology of Natural Products, Institute of Chemistry, São Paulo State University, UNESP, Araraquara, Brazil
| | - Rebeca Previate Medina
- Department of Organic Chemistry, Center for Bioassays, Biosynthesis and Ecophysiology of Natural Products, Institute of Chemistry, São Paulo State University, UNESP, Araraquara, Brazil
| | - Dulce Helena Siqueira Silva
- Department of Organic Chemistry, Center for Bioassays, Biosynthesis and Ecophysiology of Natural Products, Institute of Chemistry, São Paulo State University, UNESP, Araraquara, Brazil
| | - Beth Burgwyn Fuchs
- Division of Infectious Diseases, Rhode Island Hospital, Warren Alpert Medical School at Brown University, Providence, RI, United States
| | - Juliana Campos Junqueira
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University/UNESP, São José dos Campos, Brazil
| | - Eleftherios Mylonakis
- Division of Infectious Diseases, Rhode Island Hospital, Warren Alpert Medical School at Brown University, Providence, RI, United States
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Dos Santos JD, Fugisaki LRDO, Medina RP, Scorzoni L, Alves MDS, de Barros PP, Ribeiro FC, Fuchs BB, Mylonakis E, Silva DHS, Junqueira JC. Streptococcus mutans Secreted Products Inhibit Candida albicans Induced Oral Candidiasis. Front Microbiol 2020; 11:1605. [PMID: 32760375 PMCID: PMC7374982 DOI: 10.3389/fmicb.2020.01605] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 05/04/2020] [Accepted: 06/19/2020] [Indexed: 12/24/2022] Open
Abstract
In the oral cavity, Candida species form mixed biofilms with Streptococcus mutans, a pathogenic bacterium that can secrete quorum sensing molecules with antifungal activity. In this study, we extracted and fractioned culture filtrate of S. mutans, seeking antifungal agents capable of inhibiting the biofilms, filamentation, and candidiasis by Candida albicans. Active S. mutans UA159 supernatant filtrate components were extracted via liquid-liquid partition and fractionated on a C-18 silica column to resolve S. mutans fraction 1 (SM-F1) and fraction 2 (SM-F2). We found anti-biofilm activity for both SM-F1 and SM-F2 in a dose dependent manner and fungal growth was reduced by 2.59 and 5.98 log for SM-F1 and SM-F2, respectively. The SM-F1 and SM-F2 fractions were also capable of reducing C. albicans filamentation, however statistically significant differences were only observed for the SM-F2 (p = 0.004). SM-F2 efficacy to inhibit C. albicans was confirmed by its capacity to downregulate filamentation genes CPH1, EFG1, HWP1, and UME6. Using Galleria mellonella as an invertebrate infection model, therapeutic treatment with SM-F2 prolonged larvae survival. Examination of the antifungal capacity was extended to a murine model of oral candidiasis that exhibited a reduction in C. albicans colonization (CFU/mL) in the oral cavity when treated with SM-F1 (2.46 log) and SM-F2 (2.34 log) compared to the control (3.25 log). Although both SM-F1 and SM-F2 fractions decreased candidiasis in mice, only SM-F2 exhibited significant quantitative differences compared to the non-treated group for macroscopic lesions, hyphae invasion, tissue lesions, and inflammatory infiltrate. Taken together, these results indicate that the SM-F2 fraction contains antifungal components, providing a promising resource in the discovery of new inhibitors for oral candidiasis.
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Affiliation(s)
- Jéssica Diane Dos Santos
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University (UNESP), São José dos Campos, Brazil
| | - Luciana Ruano de Oliveira Fugisaki
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University (UNESP), São José dos Campos, Brazil
| | - Rebeca Previate Medina
- Department of Organic Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, Brazil
| | - Liliana Scorzoni
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University (UNESP), São José dos Campos, Brazil
| | - Mariana de Sá Alves
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University (UNESP), São José dos Campos, Brazil
| | - Patrícia Pimentel de Barros
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University (UNESP), São José dos Campos, Brazil
| | - Felipe Camargo Ribeiro
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University (UNESP), São José dos Campos, Brazil
| | - Beth Burgwyn Fuchs
- Division of Infectious Diseases, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, RI, United States
| | - Eleftherios Mylonakis
- Division of Infectious Diseases, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, RI, United States
| | - Dulce Helena Siqueira Silva
- Department of Organic Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, Brazil
| | - Juliana Campos Junqueira
- Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University (UNESP), São José dos Campos, Brazil
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8
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Filho JWGDO, Dos Santos Andrade TDJA, De Lima RMT, Dos Reis AC, Hameed A, Santos JVDO, Afzal MI, De Menezes AAPM, De Alencar MVOB, Silva DHS, Dias ACS, Ferreira JRDO, Islam MT, Ferreira PMP, Salehi B, Qamar M, Umer M, Imran M, Sharifi-Rad J, Martins N, De Castro e Sousa JM, Melo Cavalcante AADC. Antitumor effects of citrinin in an animal model of Sarcoma 180 via cytogenetic mechanisms. Cell Mol Biol (Noisy-le-grand) 2020. [DOI: 10.14715/cmb/2020.66.4.16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Citrinin (CIT) is a cytotoxic, hepatotoxic, nephrotoxic and cardiotoxic metabolite obtained from Penicillium citrinum, that has been increasingly searched as an anticancer drug candidate. In this study, we assessed the antitumor effects of citrinin, using cytogenetic biomarkers for genotoxicity in Sarcoma 180 (S-180) ascitic fluid cells of mice. Citrinin, extracted from P. citrinum acetonitrile extract, was characterized by LC-MS. Cytotoxic assessment was done through using comet (alkaline version) and micronucleus assays. In S-180 cells, CI50 of CIT was 3.77 μg/mL, while at 12.5 and 100 μg/mL, CIT was as cytotoxic as doxorubicin (2 μg/mL). At 0.5, 1.0 and 2.0 μg/mL, it induced genotoxicity and mutagenicity in S-180 cells, especially at 2 μg/mL, triggering oxidative damage similar to hydrogen peroxide (10 mM). The antitumor effects were evidenced by a marked increase in S-180 cells apoptosis and necrosis due to clastogenic and/or aneugenic cytogenetic effects (micronucleus formation), as well as by induction of nucleoplasm bridges and nuclear buds, culminating in S-180 apoptosis and necrosis. CIT has potential as drug candidate for antitumor purposesbyinvolving cytogenetic mechanisms.
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9
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Filho JWGDO, Dos Santos Andrade TDJA, De Lima RMT, Dos Reis AC, Hameed A, Santos JVDO, Afzal MI, De Menezes AAPM, De Alencar MVOB, Silva DHS, Dias ACS, Ferreira JRDO, Islam MT, Ferreira PMP, Salehi B, Qamar M, Umer M, Imran M, Sharifi-Rad J, Martins N, De Castro E Sousa JM, Melo Cavalcante AADC. Antitumor effects of citrinin in an animal model of Sarcoma 180 via cytogenetic mechanisms. Cell Mol Biol (Noisy-le-grand) 2020; 66:120-126. [PMID: 32583776] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Indexed: 06/11/2023]
Abstract
Citrinin (CIT) is a cytotoxic, hepatotoxic, nephrotoxic and cardiotoxic metabolite obtained from Penicillium citrinum, that has been increasingly searched as an anticancer drug candidate. In this study, we assessed the antitumor effects of citrinin, using cytogenetic biomarkers for genotoxicity in Sarcoma 180 (S-180) ascitic fluid cells of mice. Citrinin, extracted from P. citrinum acetonitrile extract, was characterized by LC-MS. Cytotoxic assessment was done through using comet (alkaline version) and micronucleus assays. In S-180 cells, CI50 of CIT was 3.77 μg/mL, while at 12.5 and 100 μg/mL, CIT was as cytotoxic as doxorubicin (2 μg/mL). At 0.5, 1.0 and 2.0 μg/mL, it induced genotoxicity and mutagenicity in S-180 cells, especially at 2 μg/mL, triggering oxidative damage similar to hydrogen peroxide (10 mM). The antitumor effects were evidenced by a marked increase in S-180 cells apoptosis and necrosis due to clastogenic and/or aneugenic cytogenetic effects (micronucleus formation), as well as by induction of nucleoplasm bridges and nuclear buds, culminating in S-180 apoptosis and necrosis. CIT has potential as drug candidate for antitumor purposesbyinvolving cytogenetic mechanisms.
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Affiliation(s)
- José Williams Gomes de Oliveira Filho
- Northeast Biotechnology Network (RENORBIO), Postgraduate Program in Biotechnology, Federal University of Piauí - UFPI, Teresina, Piauí, 64.049-550, Brazil
| | | | - Rosália Maria Tôrres De Lima
- Laboratory of Research in Toxicological Genetics - LAPGENIC, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - Antonielly Campinho Dos Reis
- Laboratory of Research in Toxicological Genetics - LAPGENIC, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - Aneela Hameed
- Institute of Food Science and Nutrition, Bahauddin Zakariya University, Multan
| | - José Victor de Oliveira Santos
- Laboratory of Research in Toxicological Genetics - LAPGENIC, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | - Muhammad Inam Afzal
- Department of Biosciences, COMSATS University Islamabad, Park Road, Tarlai kalan, Islamabad, 45550, Pakistan
| | - Ag-Anne Pereira Melo De Menezes
- Laboratory of Research in Toxicological Genetics - LAPGENIC, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil
| | | | - Dulce Helena Siqueira Silva
- Laboratory of Genetics and Molecular Biology, Federal University of Maranhão, Bacanga, São Luís, Maranhão, 65.080-805, Brazil
| | - Ana Carolina Soares Dias
- Laboratory of Genetics and Molecular Biology, Federal University of Maranhão, Bacanga, São Luís, Maranhão, 65.080-805, Brazil
| | - José Roberto de Oliveira Ferreira
- Northeast Biotechnology Network (RENORBIO), Postgraduate Program in Biotechnology, Federal University of Piauí - UFPI, Teresina, Piauí, 64.049-550, Brazil
| | - Muhammad Torequl Islam
- Laboratory of Theoretical and Computational Biophysics, Ton Duc Thang University, Ho Chi Minh City-700000, Vietnam
| | - Paulo Michel Pinheiro Ferreira
- Northeast Biotechnology Network (RENORBIO), Postgraduate Program in Biotechnology, Federal University of Piauí - UFPI, Teresina, Piauí, 64.049-550, Brazil
| | - Bahare Salehi
- Student Research Committee, School of Medicine, Bam University of Medical Sciences, Bam, Iran
| | - Muhammad Qamar
- Institute of Food Science and Nutrition, Bahauddin Zakariya University, Multan
| | - Muhammad Umer
- Department of Biosciences, COMSATS University Islamabad, Park Road, Tarlai kalan, Islamabad, 45550, Pakistan
| | - Muhammad Imran
- University Institute of Diet and Nutritional Sciences, Faculty of Allied Health Sciences,The University of Lahore, Lahore, Pakistan
| | - Javad Sharifi-Rad
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, 1991953381 Tehran, Iran
| | - Natália Martins
- Faculty of Medicine, University of Porto, Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal
| | - João Marcelo De Castro E Sousa
- Northeast Biotechnology Network (RENORBIO), Postgraduate Program in Biotechnology, Federal University of Piauí - UFPI, Teresina, Piauí, 64.049-550, Brazil
| | - Ana Amélia de Carvalho Melo Cavalcante
- Northeast Biotechnology Network (RENORBIO), Postgraduate Program in Biotechnology, Federal University of Piauí - UFPI, Teresina, Piauí, 64.049-550, Brazil
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10
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de Oliveira Filho JWG, Andrade TDJADS, de Lima RMT, Silva DHS, Dos Reis AC, Santos JVDO, de Meneses AAPM, de Carvalho RM, da Mata AMO, de Alencar MVOB, Dias ACS, da Silva FCC, Islam MT, Clark CCT, Sousa JMDCE, Melo-Cavalcante AADC. Cytogenotoxic evaluation of the acetonitrile extract, citrinin and dicitrinin-A from Penicillium citrinum. Drug Chem Toxicol 2020; 45:688-697. [PMID: 32448000 DOI: 10.1080/01480545.2020.1769642] [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: 12/22/2022]
Abstract
Endophytic fungi are promising sources of bioactive substances; however, their secondary metabolites are toxic to plants, animals, and humans. This study aimed toevaluate the toxic, cytotoxic, mutagenic and oxidant/antioxidant activities of acetonitrile extract (AEPc), citrinin (CIT) and dicitrinin-A (DIC-A) of Penicillium citrinum. For this, the test substances at 0.5; 1.0; 1.5 and 2 μg/mLwere exposed for 24 and 48 h in Artemia salina, and 48 h in Allium cepa test systems. The oxidant/antioxidant test was evaluated in pre-, co- and post-treatment with the stressor hydrogen peroxide (H2O2) in Saccharomyces cerevisiae. The results suggest that the AEPc, CIT and DIC-A at 0.5; 1.0; 1.5 and 2 μg/mL showed toxicity in A. saline, with LC50 (24 h) of 2.03 μg/mL, 1.71 μg/mL and 2.29 μg/mL, and LC50 (48 h) of 0.51 μg/mL, 0.54 μg/mL and 0.54 μg/mL, respectively.In A. cepa, the test substances also exerted cytotoxic and mutagenic effects. The AEPc, CIT and DIC-A at lower concentrations modulated the damage induced by H2O2 in the proficient and mutant strains of S. cerevisiae for cytoplasmic and mitochondrial superoxide dismutase. Moreover, the AEPc at 2 μg/mL and CIT at the two highest concentrations did not affect the H2O2-induced DNA damage in the test strains. In conclusion, AEPc, CIT and DIC-A of P. citrinum may exert their toxic, cytotoxic and mutagenic effects in the test systems possibly through oxidative stress induction pathway.
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Affiliation(s)
| | | | - Rosália Maria Tôrres de Lima
- Northeast Biotechnology Network (RENORBIO), Postgraduate Program in Biotechnology, Federal University of Piauí-IFPI, Teresina, Brazil
| | - Dulce Helena Siqueira Silva
- Nucleus of Bioassays, Biosynthesis and Ecophysiology of Natural Products (NuBBE), Department of Organic Chemistry, Institute of Chemistry, São Paulo State University (UNESP), Araraquara, Brazil
| | | | | | | | - Ricardo Melo de Carvalho
- Laboratory of Research in Toxicological Genetics-LAPGENIC, Federal University of Piauí, Teresina, Brazil
| | - Ana Maria Oliveira da Mata
- Laboratory of Research in Toxicological Genetics-LAPGENIC, Federal University of Piauí, Teresina, Brazil
| | | | | | - Felipe Cavalcanti Carneiro da Silva
- Laboratory of Research in Toxicological Genetics-LAPGENIC, Federal University of Piauí, Teresina, Brazil.,Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Brazil
| | - Muhammad Torequl Islam
- Laboratory of Theoretical and Computational Biophysics, Ton Duc Thang University, Ho Chi Minh City, Vietnam.,Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - Cain C T Clark
- Centre for Sport, Exercise, and Life Sciences, Coventry University, Coventry, UK
| | - João Marcelo de Castro E Sousa
- Northeast Biotechnology Network (RENORBIO), Postgraduate Program in Biotechnology, Federal University of Piauí-IFPI, Teresina, Brazil.,Laboratory of Research in Toxicological Genetics-LAPGENIC, Federal University of Piauí, Teresina, Brazil.,Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Brazil
| | - Ana Amélia de Carvalho Melo-Cavalcante
- Northeast Biotechnology Network (RENORBIO), Postgraduate Program in Biotechnology, Federal University of Piauí-IFPI, Teresina, Brazil.,Laboratory of Research in Toxicological Genetics-LAPGENIC, Federal University of Piauí, Teresina, Brazil.,Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Brazil
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11
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Sanzovo TOR, Lima NM, Marqui SR, Andrade TJAS, Navegante G, Serafim RB, Sorbo JM, Valente V, Silva DHS, Soares CP. Chemoprevention assessment, genotoxicity and cytotoxicity of flavonoids from Inga laurina leaves (FABACEAE). Nat Prod Res 2019; 35:3089-3094. [PMID: 31698946 DOI: 10.1080/14786419.2019.1682574] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
This study aimed to identify and evaluate the cytotoxicity, genotoxicity, antigenotoxicity and chemoprevention assessment of flavonoids myricetin-3-O-(2″-O-galloyl)-α-rhamnopyranoside and myricetin-3-rhamnoside from Inga laurina leaves extract. The Quinone reductase induction as a biomarker for cancer chemoprevention was evaluated in murine hepatocellular carcinoma, the cytotoxicity was evaluated by sulforhonamide B assay and genotoxicity was evaluated by comet assay using HepG2 cell line. The results demonstrated that the flavonoids didn´t show cytotoxicity in HepG2 cells. In the chemoprevention evaluations were not able to promote the induction of Quinone Reductase and also no genotoxic effect was observed by evaluation of the comet assay in none of the concentrations tested. In the antigenotoxicity test, all compounds had a protective effect against damage induced by hydrogen peroxide and were repaired against damage. Although none of the flavonoids were capable of inducing the enzyme Quinone Reductase at the concentrations tested, the antigenotoxicity results showed a powerful chemoprotective action.
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Affiliation(s)
- T O R Sanzovo
- School of Pharmaceutical Sciences, Department of Clinical Analysis, São Paulo State University UNESP, Araraquara, SP, Brazil
| | - N M Lima
- Institute of Chemistry, Nucleus Bioassays Biosynthesis & Ecophysiology of Natural Products, São Paulo State University UNESP, Araraquara, SP, Brazil
| | - S R Marqui
- Institute of Chemistry, Nucleus Bioassays Biosynthesis & Ecophysiology of Natural Products, São Paulo State University UNESP, Araraquara, SP, Brazil
| | - T J A S Andrade
- NIAC-Nucleus of Research Applied to Sciences-IFMA-Federal Institute of Education, Science and Technology of Maranhão
| | - G Navegante
- School of Pharmaceutical Sciences, Department of Clinical Analysis, São Paulo State University UNESP, Araraquara, SP, Brazil
| | - R B Serafim
- School of Pharmaceutical Sciences, Department of Clinical Analysis, São Paulo State University UNESP, Araraquara, SP, Brazil
| | - J M Sorbo
- School of Pharmaceutical Sciences, Department of Clinical Analysis, São Paulo State University UNESP, Araraquara, SP, Brazil
| | - V Valente
- School of Pharmaceutical Sciences, Department of Clinical Analysis, São Paulo State University UNESP, Araraquara, SP, Brazil
| | - D H S Silva
- Institute of Chemistry, Nucleus Bioassays Biosynthesis & Ecophysiology of Natural Products, São Paulo State University UNESP, Araraquara, SP, Brazil
| | - C P Soares
- School of Pharmaceutical Sciences, Department of Clinical Analysis, São Paulo State University UNESP, Araraquara, SP, Brazil
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12
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Falcoski TOR, Lima NM, Navegante G, Serafim RB, Sorbo JM, Valente V, Santos VNC, Santos RA, Silva DHS, Soares CP. Genotoxicity, cytotoxicity and chemical profile from Inga laurina ( Fabaceae). Nat Prod Res 2019; 35:676-680. [PMID: 30931614 DOI: 10.1080/14786419.2019.1590711] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
This study aimed to evaluate the cytotoxicity and genotoxicity from Inga laurina leaves extracts and fractions and obtain their chemical profile. The chemical profile of the crude extract from I. laurina leaves and its fractions was investigated through 1H NMR, RP-HPLC-PDA by co-injection with authentic standards and HPLC-MS. The quinone reductase induction as a biomarker for cancer chemoprevention was evaluated in murine hepatocellular carcinoma line, whereas the cytotoxicity was evaluated by sulforhodamine B assay (SRB) using HepG2 cell line and genotoxicity was evaluated by comet assay. The phytochemical analysis of the leaves crude extract and its fractions showed the presence of 2-hydroxyethyl-dodecanoate and the phenolic compounds: gallic acid, methyl gallate, p-coumaric acid, cinnamic acid, myricetin-3-O-(2″-O-galoyl)-α-rhamnopyranoside, proanthocyanidin A-2 and myricetrin. All the fractions tested were not considered cytotoxic against the selected human cancer cell lines, they did not cause genotoxic in some concentrations damage and induced the enzyme quinone reductase.
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Affiliation(s)
- T O R Falcoski
- School of Pharmaceutical Sciences, Department of Clinical Analysis, São Paulo State University UNESP, Araraquara, São Paulo, Brazil
| | - N M Lima
- Institute of Chemistry, Nucleus Bioassays Biosynth & Ecophysiol Nat Prod, São Paulo State University UNESP, Araraquara, São Paulo, Brazil
| | - G Navegante
- School of Pharmaceutical Sciences, Department of Clinical Analysis, São Paulo State University UNESP, Araraquara, São Paulo, Brazil
| | - R B Serafim
- School of Pharmaceutical Sciences, Department of Clinical Analysis, São Paulo State University UNESP, Araraquara, São Paulo, Brazil
| | - J M Sorbo
- School of Pharmaceutical Sciences, Department of Clinical Analysis, São Paulo State University UNESP, Araraquara, São Paulo, Brazil
| | - V Valente
- School of Pharmaceutical Sciences, Department of Clinical Analysis, São Paulo State University UNESP, Araraquara, São Paulo, Brazil
| | - V N C Santos
- Department of Biotechnology, Federal University of Amazonas, Manaus, Amazonas, Brazil
| | - R A Santos
- University of Franca, Franca, São Paulo, Brazil
| | - D H S Silva
- Institute of Chemistry, Nucleus Bioassays Biosynth & Ecophysiol Nat Prod, São Paulo State University UNESP, Araraquara, São Paulo, Brazil
| | - C P Soares
- School of Pharmaceutical Sciences, Department of Clinical Analysis, São Paulo State University UNESP, Araraquara, São Paulo, Brazil
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13
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Bernardi T, da Silva JDF, Vicentin J, de Oliveira HC, Assato PA, Marcos CM, de Paula E Silva ACA, da Silva RAM, Regasini LO, Silva DHS, da Silva Bolzani V, Fusco-Almeida AM, Mendes-Giannini MJS. Anti-apoptotic effects of decyl gallate on the induction of apoptosis in A549 pneumocytes by Paracoccidioides brasiliensis gp43. Med Mycol 2017; 55:890-894. [PMID: 28339963 DOI: 10.1093/mmy/myx013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 10/10/2016] [Accepted: 02/08/2017] [Indexed: 02/07/2023] Open
Abstract
Apoptosis is considered an escape mechanism from the host immune system for the fungus Paracoccidioides spp, and it serves as a vehicle for entry into macrophages without stimulating microbicidal activities. Recently, gp43 of P. brasiliensis was demonstrated to be involved in this process. Therefore, as a new therapeutic alternative, it is very important to study compounds that could reduce the modulation of the induction of apoptosis caused by this fungus. Decyl gallate (G14) is a known antifungal compound, and we decided to investigate its anti-apoptotic properties. Our results demonstrate that G14 was effective against apoptosis induced by gp43, as observed in epithelial cells, and led to a reduction in DNA damage, Bak down-regulation and Bcl-2 up-regulation. Together, these data show that G14 presents promising anti-apoptotic activity.
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Affiliation(s)
- Thais Bernardi
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Farmacêuticas, Campus Araraquara, Departamento de Análises Clínicas, Laboratório de Micologia Clínica, Araraquara, São Paulo, Brasil
| | - Julhiany de Fátima da Silva
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Farmacêuticas, Campus Araraquara, Departamento de Análises Clínicas, Laboratório de Micologia Clínica, Araraquara, São Paulo, Brasil
| | - Juliana Vicentin
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Farmacêuticas, Campus Araraquara, Departamento de Análises Clínicas, Laboratório de Micologia Clínica, Araraquara, São Paulo, Brasil
| | - Haroldo Cesar de Oliveira
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Farmacêuticas, Campus Araraquara, Departamento de Análises Clínicas, Laboratório de Micologia Clínica, Araraquara, São Paulo, Brasil
| | - Patricia Akemi Assato
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Farmacêuticas, Campus Araraquara, Departamento de Análises Clínicas, Laboratório de Micologia Clínica, Araraquara, São Paulo, Brasil
| | - Caroline Maria Marcos
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Farmacêuticas, Campus Araraquara, Departamento de Análises Clínicas, Laboratório de Micologia Clínica, Araraquara, São Paulo, Brasil
| | - Ana Carolina Alves de Paula E Silva
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Farmacêuticas, Campus Araraquara, Departamento de Análises Clínicas, Laboratório de Micologia Clínica, Araraquara, São Paulo, Brasil
| | - Rosangela Aparecida Moraes da Silva
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Farmacêuticas, Campus Araraquara, Departamento de Análises Clínicas, Laboratório de Micologia Clínica, Araraquara, São Paulo, Brasil
| | - Luis Octávio Regasini
- Universidade Estadual Paulista (UNESP), Instituto de Biociências, Letras e Ciências Exatas, Campus São José do Rio Preto, Departamento de Química e Ciências Ambientais, São José do Rio Preto, São Paulo, Brasil
| | - Dulce Helena Siqueira Silva
- Universidade Estadual Paulista (UNESP), Instituto de Química, Campus Araraquara Departamento de Química Orgânica, Araraquara, São Paulo, Brasil
| | - Vanderlan da Silva Bolzani
- Universidade Estadual Paulista (UNESP), Instituto de Química, Campus Araraquara Departamento de Química Orgânica, Araraquara, São Paulo, Brasil
| | - Ana Marisa Fusco-Almeida
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Farmacêuticas, Campus Araraquara, Departamento de Análises Clínicas, Laboratório de Micologia Clínica, Araraquara, São Paulo, Brasil
| | - Maria José Soares Mendes-Giannini
- Universidade Estadual Paulista (UNESP), Faculdade de Ciências Farmacêuticas, Campus Araraquara, Departamento de Análises Clínicas, Laboratório de Micologia Clínica, Araraquara, São Paulo, Brasil
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14
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Saroni Arwa P, Zeraik ML, Ximenes VF, da Fonseca LM, Bolzani VDS, Siqueira Silva DH. Redox-active biflavonoids from Garcinia brasiliensis as inhibitors of neutrophil oxidative burst and human erythrocyte membrane damage. J Ethnopharmacol 2015; 174:410-418. [PMID: 26320685 DOI: 10.1016/j.jep.2015.08.041] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [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: 02/25/2015] [Revised: 08/22/2015] [Accepted: 08/26/2015] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Garcinia brasiliensis, a plant native to the Brazilian Amazon Rainforest, is used in traditional medicine to treat inflammation of the urinary tract, peptic ulcers, arthritis and other conditions. AIM OF THE STUDY The purposes of this study were to analyze the chemical constituents of G. brasiliensis branches and leaves and to evaluate the potential of isolated compounds to act as inhibitors of both the oxidative burst of stimulated neutrophils and oxidative damage in human erythrocyte membranes to verify the antioxidant and anti-inflammatory effects of this plant. MATERIALS AND METHODS Neutrophils were isolated from the blood of healthy donors by Ficoll-Paque density gradient centrifugation. Superoxide anion and total reactive oxygen species (ROS) produced by stimulated neutrophils were measured by WST-1 reduction and luminol-enhanced chemiluminescence assays, respectively. Radical-induced lipoperoxidation and hemolysis were performed using erythrocytes from the blood of healthy donors. Compounds were isolated from G. brasiliensis branches and leaves by HPLC microfractionation, and structure elucidation of the isolated compounds was performed based on NMR and HR-MS analyses. RESULTS The biflavonoids procyanidin, fukugetin, amentoflavone and podocarpusflavone isolated from G. brasiliensis showed potent inhibitory effects on the oxidative burst of human neutrophils, inhibiting ROS production by 50% at 1 μmol L(-1). These biflavonoids also proved to be potent inhibitors of hemolysis (with 88 ± 7% inhibition at 50 µmol L(-1) for procyanidin) and lipid peroxidation in human erythrocytes, with a malondialdehyde level (a biomarker of oxidative stress) of 8.5 ± 0.3 nmol/mg Hb at 50 µmol L(-1) for procyanidin. CONCLUSIONS These findings indicate that the biflavonoids extracted from G. brasiliensis branches and leaves modulate oxidative stress via inhibition of NADPH oxidase and ROS production by stimulated human neutrophils. Furthermore, the biflavonoids exhibited potent inhibition of oxidant hemolysis and lipid peroxidation induced by AAPH in human erythrocytes. Therefore, these studies suggest the use of G. brasiliensis extract as an antioxidant and anti-inflammatory agent.
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Affiliation(s)
- Phanuel Saroni Arwa
- Department of Organic Chemistry, Nucleus of Bioassays, Ecophysiology and Biosynthesis of Natural Products (NUBBE), Institute of Chemistry, São Paulo State University (UNESP), P.O. Box 355, 14800-900 Araraquara, São Paulo, Brazil
| | - Maria Luiza Zeraik
- Department of Organic Chemistry, Nucleus of Bioassays, Ecophysiology and Biosynthesis of Natural Products (NUBBE), Institute of Chemistry, São Paulo State University (UNESP), P.O. Box 355, 14800-900 Araraquara, São Paulo, Brazil.
| | - Valdecir Farias Ximenes
- Department of Chemistry, School of Sciences, São Paulo State University (UNESP), P.O. Box 473, 17033-360 Bauru, São Paulo, Brazil
| | - Luiz Marcos da Fonseca
- Department of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (UNESP), P.O. Box 502, 14801-902 Araraquara, São Paulo, Brazil
| | - Vanderlan da Silva Bolzani
- Department of Organic Chemistry, Nucleus of Bioassays, Ecophysiology and Biosynthesis of Natural Products (NUBBE), Institute of Chemistry, São Paulo State University (UNESP), P.O. Box 355, 14800-900 Araraquara, São Paulo, Brazil
| | - Dulce Helena Siqueira Silva
- Department of Organic Chemistry, Nucleus of Bioassays, Ecophysiology and Biosynthesis of Natural Products (NUBBE), Institute of Chemistry, São Paulo State University (UNESP), P.O. Box 355, 14800-900 Araraquara, São Paulo, Brazil.
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15
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Lisboa HCF, Biasetto CR, de Medeiros JB, Âraújo AR, Silva DHS, Teles HL, Trevisan HC. Endophytic fungi producing of esterases: evaluation in vitro of the enzymatic activity using pH indicator. Braz J Microbiol 2014; 44:923-6. [PMID: 24516461 PMCID: PMC3910213 DOI: 10.1590/s1517-83822013005000067] [Citation(s) in RCA: 8] [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: 09/09/2010] [Accepted: 11/13/2012] [Indexed: 11/22/2022] Open
Abstract
A sensitive and efficient colorimetric method was optimized for detection of esterase enzymes produced by endophytic fungi for development of High-Throughput Screening (HTS). The fungi were isolated and obtained previously from plant species of Cerrado and Atlantic Forest located in areas of environmental preservation in the State of Sao Paulo / Brazil, as part of the project “Chemical and biological prospecting endophytic fungi associated to plant species of Cerrado and Atlantic Forest”. The compounds ethyl butyrate, ethyl acetate and methyl propionate were used as standards esters which were hydrolyzed by extracellular enzyme from endophytic fungi (EC. 3.1.1.1 - carboxyl-esterases) for production of carboxylic acids. Thus, the reduction of the pH increases the protonated indicator concentration (bromothymol blue), changing the color of the reaction medium (from blue to yellow), that can be observed and measured by spectrophotometry at 616 nm. The methodology with acid-base indicator was performed on 13 microorganisms, aiming Periconia atropurpurea as a potential source of esterase for biotransformation of short chain esters. The results also evidenced that this methodology showed to be efficient, fast, cheap, having low consumption of reagents and easy development, and can be applied to screen carboxylic-ester hydrolases in a large number of microorganisms.
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Affiliation(s)
- Helen Cristina Fávero Lisboa
- Instituto de Química, Universidade Estadual Paulista "Julio de Mesquita Filho", Araraquara, SP, Brazil. ; Instituto de Ciências Exatas e Naturais, Universidade Federal de Mato Grosso, Rondonópolis, MT, Brazil
| | - Carolina Rabal Biasetto
- Instituto de Química, Universidade Estadual Paulista "Julio de Mesquita Filho", Araraquara, SP, Brazil
| | - João Batista de Medeiros
- Instituto de Química, Universidade Estadual Paulista "Julio de Mesquita Filho", Araraquara, SP, Brazil
| | - Angela Regina Âraújo
- Instituto de Química, Universidade Estadual Paulista "Julio de Mesquita Filho", Araraquara, SP, Brazil
| | | | - Helder Lopes Teles
- Instituto de Ciências Exatas e Naturais, Universidade Federal de Mato Grosso, Rondonópolis, MT, Brazil
| | - Henrique Celso Trevisan
- Instituto de Química, Universidade Estadual Paulista "Julio de Mesquita Filho", Araraquara, SP, Brazil
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16
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Flausino OA, Dufau L, Regasini LO, Petrônio MS, Silva DHS, Rose T, Bolzani VS, Reboud-Ravaux M. Alkyl hydroxybenzoic acid derivatives that inhibit HIV-1 protease dimerization. Curr Med Chem 2013; 19:4534-40. [PMID: 22963666 DOI: 10.2174/092986712803251557] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 08/14/2012] [Accepted: 08/26/2012] [Indexed: 11/22/2022]
Abstract
The therapeutic potential of gallic acid and its derivatives as anti-cancer, antimicrobial and antiviral agents is well known. We have examined the mechanism by which natural gallic acid and newly synthesized gallic acid alkyl esters and related protocatechuic acid alkyl esters inhibit HIV-1 protease to compare the influence of the aromatic ring substitutions on inhibition. We used Zhang-Poorman's kinetic analysis and fluorescent probe binding to demonstrate that several gallic and protecatechuic acid alkyl esters inhibited HIV-1 protease by preventing the dimerization of this obligate homodimeric aspartic protease rather than targeting the active site. The tri-hydroxy substituted benzoic moiety in gallates was more favorable than the di-substituted one in protocatechuates. In both series, the type of inhibition, its mechanism and the inhibitory efficiency dramatically depended on the length of the alkyl chain: no inhibition with alkyl chains less than 8 carbon atoms long. Molecular dynamics simulations corroborated the kinetic data and propose that gallic esters are intercalated between the two N- and C-monomer ends. They complete the β-sheet and disrupt the dimeric enzyme. The best gallic ester (14 carbon atoms, K(id) of 320 nM) also inhibited the multi-mutated protease MDR-HM. These results will aid the rational design of future generations of non-peptide inhibitors of HIV-1 protease dimerization that inhibit multi-mutated proteases. Finally, our work suggests the wide use of gallic and protocatechuic alkyl esters to dissociate intermolecular β-sheets involved in protein-protein interactions.
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Affiliation(s)
- O A Flausino
- Enzymologie Moléculaire et Fonctionnelle, UR4, UPMC-Sorbonne Universités, 7 Quai St Bernard, 75252 Paris Cedex 05, France
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17
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Zeraik ML, Ximenes VF, Regasini LO, Dutra LA, Silva DHS, Fonseca LM, Coelho D, Machado SAS, Bolzani VS. 4'-Aminochalcones as novel inhibitors of the chlorinating activity of myeloperoxidase. Curr Med Chem 2013; 19:5405-13. [PMID: 22963624 DOI: 10.2174/092986712803833344] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Revised: 08/28/2012] [Accepted: 08/28/2012] [Indexed: 11/22/2022]
Abstract
The excessive activation of neutrophils generates reactive oxygen species (ROS) and the secretion of primary granular enzymes, such as myeloperoxidase (MPO), which is implicated in numerous inflammatory diseases. The aim of this study was to evaluate chalcones as inhibitors of the chlorinating activity of MPO using in vitro and ex vivo assays. In addition to cytotoxic properties, the inhibition of respiratory burst, the scavenger capacity, and the oxidation potential were measured. 4'-Aminochalcone (1), 4'-amino-4- fluorochalcone (2), and 4'-amino-4-methylchalcone (3) exhibited potent inhibition of the chlorinating activity of MPO, as evaluated in a neutrophil system and a free cell system, to the following degree: (1) IC50 = 0.265 � 0.036 μmol L-1; (2) IC50 = 0.250 � 0.081 μmol L-1; and (3) IC50 = 0.250 � 0.012 μmol L-1. These values were similar to those for 5-fluorotryptamine (IC50 = 0.192 � 0.012 μmol L-1), a compound considered to be a potent MPO inhibitor. These aminochalcones were not toxic to neutrophils at concentrations below 100 μmol L- 1, as determined by the trypan blue exclusion assay. Compounds 1-3 presented a high oxidation potential (Epa1 ≉ 0.80 V), low scavenger capacity against DPPH• and HOCl, and low inhibition of respiratory burst. These data indicated that aminochalcones are potent inhibitors of MPO chlorinating activity, a new property for chalcone derivatives, given that they are neither antioxidant agents nor inhibitors of respiratory burst. In conclusion, the selected aminochalcones have potential as pharmacological agents for inflammatory diseases.
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Affiliation(s)
- M L Zeraik
- Department of Organic Chemistry, Nuclei of Bioassays, Ecophysiology and Biosynthesis of Natural Products (NuBBE), Institute of Chemistry, Sao Paulo State University (UNESP), P. O. Box 355, 14800- 900, Araraquara, Sao Paulo, Brazil
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de Faria CMQG, Nazaré AC, Petrônio MS, Paracatu LC, Zeraik ML, Regasini LO, Silva DHS, da Fonseca LM, Ximenes VF. Protocatechuic acid alkyl esters: hydrophobicity as a determinant factor for inhibition of NADPH oxidase. Curr Med Chem 2013; 19:4885-93. [PMID: 22934778 DOI: 10.2174/092986712803341557] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2012] [Revised: 08/02/2012] [Accepted: 08/15/2012] [Indexed: 11/22/2022]
Abstract
This study presents the increased efficiency of NADPH oxidase inhibition produced by esterification of protocatechuic acid (P0). Alkyl esters bearing chain lengths of 4 (P4), 7 (P7) and 10 (P10) carbons were synthesized and their oxidation potential, hydrophobicity, antiradical activity, inhibition of superoxide anion (O2°(-)), and the abilities to affect hypochlorous acid (HOCl) production by leukocytes and inhibit myeloperoxidase (MPO) chlorinating activity were studied. The increased hydrophobicity (logP, 0.81-4.82) of the esters was not correlated with a significant alteration in their oxidation potential (0.222-0.298 V). However, except for P10, the esters were ~ 2-fold more effective than the acid precursor for the scavenging of DPPH and peroxyl radicals. The esters were strong inhibitors of O2°(-) released by activated neutrophils (PMNs) and peripheral blood mononuclear cells (PBMCs). A correlation was found between the carbon chain length and the relative inhibitory potency. P7, the most active ester, was ~ 10-fold more efficient as NADPH oxidase inhibitor than apocynin. The esters strongly inhibited the release of HOCl by PMNs, which was a consequence of the inhibition of NADPH oxidase activity in these cells. In conclusion, as effective inhibitors of NADPH oxidase, the esters of protocatechuic acid are promising drugs for treatment of chronic inflammatory diseases. Moreover, this is the first demonstration that, besides the redox active moiety, the hydrophobicity can also be a determinant factor for the design of NADPH oxidase inhibitors.
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Affiliation(s)
- C M Q G de Faria
- Department of Chemistry, Faculty of Science, Sao Paulo State University, Bauru, Brazil
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Coqueiro A, Regasini LO, Skrzek SCG, Queiroz MMF, Silva DHS, da Silva Bolzani V. Free radical scavenging activity of Kielmeyera variabilis (Clusiaceae). Molecules 2013; 18:2376-85. [PMID: 23429348 PMCID: PMC6270038 DOI: 10.3390/molecules18022376] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [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: 01/07/2013] [Revised: 02/01/2013] [Accepted: 02/01/2013] [Indexed: 11/25/2022] Open
Abstract
As part of our ongoing research on antioxidant agents from Brazilian flora, we screened the free radical scavenging activity of two extracts and eight fractions of Kielmeyera variabilis (Clusiaceae) using DPPH· (2,2-diphenyl-1-picrylhydrazyl-hydrate) and ABTS·+ [2,2'-azinobis(3-ethylenebenzothiazoline-6-sulfonic acid)] colorimetric assays. The ethyl acetate and n-butanol fractions of the leaves of K. variabilis displayed the strongest activity (IC₅₀ of 3.5 ± 0.3 and 4.4 ± 0.2 μg mL⁻¹ for DPPH· and 6.6 ± 0.4 and 3.1 ± 0.1 μg mL⁻¹ for ABTS·+, respectively). Chromatographic fractionation of the most potent fractions led to identification of three flavonols with previously described antioxidant activity, quercitrin (1), quercetin-3-O-β-glucoside (3), and quercetin-3-O-β-galactoside (4), and of one biflavone, podocarpusflavone A (2). This is the first time that the presence of these flavonoids in Kielmeyera variabilis has been reported.
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Affiliation(s)
| | | | | | | | | | - Vanderlan da Silva Bolzani
- Department of Organic Chemistry, Institute of Chemistry, São Paulo State University, Araraquara 14800-900, Brazil; E-Mails: (A.C.); (L.O.R.); (S.C.G.S.); (M.M.F.Q.); (D.H.S.S.)
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Viegas Junior C, Pivatto M, Rezende AD, Hamerski L, Silva DHS, Bolzani VDS. (-)-7-hydroxycassine: a new 2,6-dialkylpiperidin-3-ol alkaloid and other constituents isolated from flowers and fruits of Senna spectabilis (Fabaceae). J BRAZIL CHEM SOC 2013. [DOI: 10.1590/s0103-50532013000200008] [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: 11/22/2022] Open
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21
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Viegas Junior C, Pivatto M, Rezende AD, Hamerski L, Silva DHS, Bolzani VDS. (–)-7-Hydroxycassine: a New 2,6-Dialkylpiperidin-3-ol Alkaloid and other Constituents Isolated from Flowers and Fruits of Senna spectabilis(Fabaceae). J BRAZIL CHEM SOC 2013. [DOI: 10.5935/0103-5053.20130029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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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22
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Alves RT, Regasini LO, Funari CS, Young MCM, Rimoldi A, Bolzani VDS, Silva DHS, Albuquerque SD, Rosa JAD. Trypanocidal activity of Brazilian plants against epimastigote forms from Y and Bolivia strains of Trypanosoma cruzi. Rev bras farmacogn 2012. [DOI: 10.1590/s0102-695x2012005000014] [Citation(s) in RCA: 10] [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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23
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Valli M, Pivatto M, Danuello A, Castro-Gamboa I, Silva DHS, Cavalheiro AJ, Araújo ÂR, Furlan M, Lopes MN, Bolzani VDS. Tropical biodiversity: has it been a potential source of secondary metabolites useful for medicinal chemistry? QUIM NOVA 2012. [DOI: 10.1590/s0100-40422012001100036] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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24
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Funari CS, Passalacqua TG, Rinaldo D, Napolitano A, Festa M, Capasso A, Piacente S, Pizza C, Young MCM, Durigan G, Silva DHS. Interconverting flavanone glucosides and other phenolic compounds in Lippia salviaefolia Cham. ethanol extracts. Phytochemistry 2011; 72:2052-2061. [PMID: 21871644 DOI: 10.1016/j.phytochem.2011.07.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2010] [Revised: 03/31/2011] [Accepted: 07/05/2011] [Indexed: 05/31/2023]
Abstract
Four interconverting flavanone glycosides [(2R)- and (2S)-3',4',5,6-tetrahydroxyflavanone 7-O-β-D-glucopyranoside, and (2R)- and (2S)-3',4',5,8-tetrahydroxyflavanone 7-O-β-D-glucopyranoside], in addition to eight known flavonoids [naringenin, asebogenin, sakuranetin, 6-hydroxyluteolin 7-O-β-D-glucoside, (2R)- and (2S)-eriodictyol 7-O-β-D-glucopyranoside, aromadendrin and phloretin], three phenylpropanoid glycosides [forsythoside B, alyssonoside and verbascoside] and the epoxylignan lariciresinol 4'-O-β-D-glucopyranoside were isolated and identified in the EtOH extract of the aerial parts of Lippia salviaefolia Cham. The phytochemical study herein was guided by preliminary antioxidant tests, namely, β-carotene protection and 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging activity. The crude extracts, their active fractions and the isolated compounds were assayed against intracellular reactive oxygen species (ROS) and human embryonic kidney HEK-293 and human melanoma M14 cancer cell growth. Aromadendrin and phloretin were able to counteract elevation of ROS induced by the oxidant t-butylhydroperoxide (t-BOOH) in HEK-293 cells, whereas phloretin strongly protected HEK-293 cells from ROS damage at 1 μM. Additionally, phloretin exhibited a significant growth inhibitory effect at 20-40 μM in both HEK-293 and M14 cells and induced a concentration dependent apoptosis at 20 μM in M14 cells, suggesting a selective action towards malignant cells. Due to their equilibria, the four interconverting flavanone glycosides were studied using 1D and 2D NMR, HPLC-CD-PDA and HRMS analyses.
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Affiliation(s)
- Cristiano Soleo Funari
- Institute of Chemistry, São Paulo State University, CP 355, CEP 14801-970 Araraquara, SP, Brazil
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Batista ANDL, Batista Junior JM, López SN, Furlan M, Cavalheiro AJ, Silva DHS, Bolzani VDS, Nunomura SM, Yoshida M. Aromatic compounds from three Brazilian Lauraceae species. QUIM NOVA 2010. [DOI: 10.1590/s0100-40422010000200017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [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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26
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Regasini LO, Castro-Gamboa I, Silva DHS, Furlan M, Barreiro EJ, Ferreira PMP, Pessoa C, Lotufo LVC, de Moraes MO, Young MCM, Bolzani VDS. Cytotoxic guanidine alkaloids from Pterogyne nitens. J Nat Prod 2009; 72:473-476. [PMID: 19159272 DOI: 10.1021/np800612x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
As part of a bioprospecting program aimed at the discovery of potential anticancer drugs, two new guanidine-type alkaloids, nitensidines D and E (1, 2), and the known pterogynine (3), pterogynidine (4), and galegine (5), were isolated from the leaves of Pterogyne nitens. The structures of 1 and 2 were established on the basis of spectroscopic data interpretation. These compounds were tested against a small panel of human cancer cell lines. Compound 2 exhibited cytotoxicity for HL-60 (human myeloblastic leukemia) and SF-245 (human glioblastoma) cells.
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Affiliation(s)
- Luis Octávio Regasini
- Institute of Chemistry, Nucley of Bioassay, Biosynthesis and Ecophysiology of Natural Products, NuBBE, Sao Paulo State University, UNESP, Araraquara, SP, Brazil
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Santos ABD, Silva DHS, Bolzani VDS, Santos LÁ, Schmidt TM, Baffa O. Antioxidant properties of plant extracts: an EPR and DFT comparative study of the reaction with DPPH, TEMPOL and spin trap DMPO. J BRAZIL CHEM SOC 2009. [DOI: 10.1590/s0103-50532009000800015] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [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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da Silva LLD, Nascimento MS, Cavalheiro AJ, Silva DHS, Castro-Gamboa I, Furlan M, Bolzani VDS. Antibacterial activity of labdane diterpenoids from Stemodia foliosa. J Nat Prod 2008; 71:1291-1293. [PMID: 18582112 DOI: 10.1021/np800106x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
As part of a continuing interest in exploring the chemistry of Brazilian medicinal plants, three new labdane diterpenoids, 6alpha-acetoxymanoyl oxide (1), 6alpha-malonyloxymanoyl oxide (2), and 6alpha-malonyloxy-n-butyl ester manoyl oxide (3), together with the known betulinic acid, lupeol, sitosterol, and stigmasterol, were isolated from the aerial parts of Stemodia foliosa. The structures of 1-3 were established on the basis of interpretation of spectroscopic data, including HRESIMS, and 1D and 2D NMR techniques. All compounds were tested against a bacteria panel consisting of Staphylococcus aureus, Bacillus cereus, B. subtilis, B. anthracis, Micrococcus luteus, Mycobacterium smegmatis, and M. phlei. Compound 2 showed moderate activity against these strains, with MIC values in the range 7-20 microg/mL.
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Regasini LO, Vellosa JCR, Silva DHS, Furlan M, de Oliveira OMM, Khalil NM, Brunetti IL, Young MCM, Barreiro EJ, Bolzani VS. Flavonols from Pterogyne nitens and their evaluation as myeloperoxidase inhibitors. Phytochemistry 2008; 69:1739-1744. [PMID: 18395762 DOI: 10.1016/j.phytochem.2008.01.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2007] [Revised: 10/11/2007] [Accepted: 01/16/2008] [Indexed: 05/26/2023]
Abstract
A myeloperoxidase inhibitory kaempferol derivative, namely pterogynoside (1), was isolated from fruits of Pterogyne nitens, along with six known flavonols, kaempferol, afzelin, kaempferitrin, quercetin, isoquercetrin and rutin. The structures of all compounds were elucidated primarily from 1D and 2D NMR spectroscopic analyses, as well as by high resolution mass spectrometry. All flavonols were screened to identify secondary metabolites as potential myeloperoxidase (MPO) inhibitors, and at concentrations of 0.50-50nM, quercetin (5), isoquercitrin (6) and rutin (7) exhibited strong inhibitory effects with IC50 values of 1.22+/-0.01, 3.75+/-0.02 and 3.60+/-0.02, respectively. The MPO activity detected for the new derivative 1 was markedly decreased (IC(50) 10.3+/-0.03) when compared with known flavonols 5-7, and interestingly increased when tested against ABTS scavenging activity.
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Affiliation(s)
- Luis Octávio Regasini
- Universidade Estadual Paulista, Instituto de Química, NuBBE - Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais, Araraquara, SP, CP 355, CEP 14801-970, Brazil
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Regasini LO, Fernandes DC, Castro-Gamboa I, Silva DHS, Furlan M, Bolzani VDS, Barreiro EJ, Cardoso-Lopes EM, Young MCM, Torres LB, Vellosa JCR, Oliveira OMMD. Constituintes químicos das flores de Pterogyne nitens (Caesalpinioideae). QUIM NOVA 2008. [DOI: 10.1590/s0100-40422008000400018] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [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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31
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Fernandes DC, Regasini LO, Vellosa JCR, Pauletti PM, Castro-gamboa I, Bolzani VS, Oliveira OMM, Silva DHS. Myeloperoxidase Inhibitory and Radical Scavenging Activities of Flavones from Pterogyne nitens. Chem Pharm Bull (Tokyo) 2008; 56:723-6. [DOI: 10.1248/cpb.56.723] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Daniara Cristina Fernandes
- NuBBE-Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais, Department of Organic Chemistry, Institute of Chemistry, UNESP-São Paulo State University
| | - Luis Octávio Regasini
- NuBBE-Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais, Department of Organic Chemistry, Institute of Chemistry, UNESP-São Paulo State University
| | | | - Patrícia Mendonça Pauletti
- Department of Biochemistry and Chemical Technology, Institute of Chemistry, UNESP-São Paulo State University
| | - Ian Castro-gamboa
- NuBBE-Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais, Department of Organic Chemistry, Institute of Chemistry, UNESP-São Paulo State University
| | - Vanderlan Silva Bolzani
- NuBBE-Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais, Department of Organic Chemistry, Institute of Chemistry, UNESP-São Paulo State University
| | | | - Dulce Helena Siqueira Silva
- NuBBE-Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais, Department of Organic Chemistry, Institute of Chemistry, UNESP-São Paulo State University
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Marqui SRD, Lemos RB, Santos LÁ, Castro-Gamboa I, Cavalheiro AJ, Bolzani VDS, Silva DHS, Scorzoni L, Fusco-Almeida AM, Mendes-Giannini MJS, Young MCM, Torres LMB. Saponinas antifúngicas de Swartzia langsdorffii. QUIM NOVA 2008. [DOI: 10.1590/s0100-40422008000400023] [Citation(s) in RCA: 4] [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: 11/21/2022] Open
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33
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Carbonezi CA, Hamerski L, Gunatilaka AAL, Cavalheiro A, Castro-Gamboa I, Silva DHS, Furlan M, Young MCM, Lopes MN, Bolzani VDS. Bioactive flavone dimers from Ouratea multiflora (Ochnaceae). Rev bras farmacogn 2007. [DOI: 10.1590/s0102-695x2007000300003] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [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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Scorzoni L, Benaducci T, Almeida AMF, Silva DHS, Bolzani VDS, Gianinni MJSM. The use of standard methodology for determination of antifungal activity of natural products against medical yeasts Candida sp and Cryptococcus sp. Braz J Microbiol 2007. [DOI: 10.1590/s1517-83822007000300001] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [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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35
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Viegas Junior C, Rezende AD, Silva DHS, Castro-Gambôa I, Bolzani VDS, Barreiro EJ, Miranda ALPD, Alexandre-Moreira MS, Young MCM. Aspectos químicos, biológicos e etnofarmacológicos do gênero Cassia. QUIM NOVA 2006. [DOI: 10.1590/s0100-40422006000600025] [Citation(s) in RCA: 25] [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] [Indexed: 11/22/2022] Open
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Cardoso CL, Bolzani VDS, Silva DHS, Ishii H, Berova N, Nakanishi K. The absolute configuration of 1-(3',4'-dihydroxycinnamoyl)cyclopentane-2,3-diol from the amazonian tree Chimarrhis turbinata. J Nat Prod 2006; 69:1046-50. [PMID: 16872142 DOI: 10.1021/np050522y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
An antioxidant, 1-(3',4'-dihydroxycinnamoyl)cyclopentane-2,3-diol [or (E)-2,3-dihydroxycyclopentyl-3-(3',4'-dihydroxyphenyl)acrylate (1)], and two known trans- and cis-chlorogenic acid methyl esters were isolated from the ethanolic extract of the leaves of Chimarrhis turbinata. The relative configuration of 1 was determined by NMR and by comparison of the circular dichroic spectrum (CD) with those of the enantiomers of synthetic 3',4'-dimethoxycinnamoyl analogues. The absolute configuration of one of the synthetic enantiomers was determined using the CD exciton chirality method. This established the structure of naturally occurring 1 as (E)-2,3-dihydroxycyclopentyl-3-(3',4'-dihydroxyphenyl)acrylate.
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Affiliation(s)
- Carmen Lucia Cardoso
- NuBBE, Núcleo de Biossíntese, Bioensaios e Ecofisologia de Produtos Naturais, Instituto de Química, Universidade Estadual Paulista (UNESP), C.P. 355, 14800-900, Araraquara-SP, Brazil
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Hamerski L, Bomm MD, Silva DHS, Young MCM, Furlan M, Eberlin MN, Castro-Gamboa I, Cavalheiro AJ, da Silva Bolzani V. Phenylpropanoid glucosides from leaves of Coussarea hydrangeifolia (Rubiaceae). Phytochemistry 2005; 66:1927-32. [PMID: 16095640 DOI: 10.1016/j.phytochem.2005.06.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2004] [Revised: 05/02/2005] [Indexed: 05/03/2023]
Abstract
Phenylpropanoid glycosides, 1'-O-benzyl-alpha-L-rhamnopyranosyl-(1''-->6')-beta-D-glucopyranoside (1) and alpha-L-xylopyranosyl-(4''-->2')-(3-O-beta-D-glucopyranosyl)-1'-O-E-caffeoyl-beta-D-glucopyranoside (2), together with the known derivatives, 1,6-di-O-caffeoyl-beta-D-glucopyranoside (3), 1-O-(E)-caffeoyl-beta-D-glucopyranoside (4) and 1-O-(E)-feruloyl-beta-D-glucopyranoside (5), were isolated from leaves of Coussarea hydrangeifolia. Their structures were determined by IR, HRESIMS, and 1D and 2D NMR experiments, and their antioxidant activities, evaluated by assaying the free radical scavenging capacity using the DPPH (1,1-diphenyl-2-picrylhydrazyl) radical as substrate. The antioxidant activities of 3 and 4 (IC50 values of 15.0 and 19.2 microM, respectively) were comparable to that of the standard positive control caffeic acid, whilst 2 and 5 were only weakly active and 1 was inactive.
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Affiliation(s)
- Lidilhone Hamerski
- NuBBE, Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais, Instituto de Química, Universidade Estadual Paulista, CP-355, CEP 14800-900 Araraquara, SP, Brazil
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Cardoso CL, Castro-Gamboa I, Silva DHS, Furlan M, Epifanio RDA, Pinto ADC, Moraes de Rezende C, Lima JA, Bolzani VDS. Indole glucoalkaloids from Chimarrhis turbinata and their evaluation as antioxidant agents and acetylcholinesterase inhibitors. J Nat Prod 2004; 67:1882-1885. [PMID: 15568781 DOI: 10.1021/np049863m] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
As part of our study on bioactive agents from Brazilian rainforest plants, two new glucoalkaloids, 3,4-dehydro-strictosidine (1) and 3,4-dehydro-strictosidinic acid (2), were isolated from Chimarrhis turbinata, along with seven known glucoalkaloids, cordifoline (3), strictosidinic acid (4), strictosidine (5), 5 alpha-carboxystrictosidine (6), turbinatine (7), desoxycordifoline (8), and harman-3-carboxylic acid (9). The structures of the new alkaloids were established on the basis of comprehensive spectral analysis, mainly 1D and 2D NMR experiments, as well as high-resolution HRESIMS. Alkaloid 3 showed strong free-radical scavenging activity against 1,1-diphenyl-2-picrylhydrazyl (DPPH) as well as pronounced antioxidant activity evidenced by redox properties measured by ElCD-HPLC. Additionally, alkaloids 1-9 were submitted to TLC screening for acetylcholinesterase inhibitors. Both 7 and 8 were shown to be moderate acetylcholinesterase inhibitors at a concentration of 0.1 and 1.0 microM, respectively. In an in vitro rat brain assay, 7 showed moderate activity (IC(50) 1.86 microM), compared to the standard compound, galanthamine (IC(50) 0.92 microM).
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Affiliation(s)
- Carmem Lucia Cardoso
- Núcleo de Biossíntese, Bioensaios e Ecofisologia de Produtos Naturais, Instituto de Química da Universidade Estadual Paulista, C.P. 355-14800-900, Araraquara, Brazil
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Jeller AH, Silva DHS, Lião LM, Bolzani VDS, Furlan M. Antioxidant phenolic and quinonemethide triterpenes from Cheiloclinium cognatum. Phytochemistry 2004; 65:1977-1982. [PMID: 15280004 DOI: 10.1016/j.phytochem.2004.03.039] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2003] [Revised: 03/05/2004] [Indexed: 05/24/2023]
Abstract
The triterpenes, 22beta-hydroxypristimerin and cognatine, were isolated together with the known compounds pristimerin, maytenin, 20alpha-hydroxymaytenin, 22beta-hydroxymaytenin, netzahualcoyol, netzahualcoyondiol and netzahualcoyone from root bark of Cheiloclinium cognatum. The structures of the isolated compounds were elucidated by interpretation of their spectral data, including gHMQC and gHMBC experiments. The isolates were investigated for their radical scavenging abilities through a spectrophotometric assay involving reduction of 2,2-diphenyl-picryl hydrazyl (DPPH).
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Affiliation(s)
- Alex Haroldo Jeller
- Departamento de Química, Universidade Estadual de Mato Grosso do Sul, CP 351, 79804-970 Dourados, MS, Brazil
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Carbonezi CA, Lopes MN, Silva DHS, Araújo ÂR, Bolzani VDS, Young MCM, Silva MRD. Derivado cinamoílico com atividade no reparo de DNA e outras substâncias de Cinnamomum australe (Lauraceae). QUIM NOVA 2004. [DOI: 10.1590/s0100-40422004000200005] [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: 11/21/2022] Open
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Corsino J, Silva DHS, Zanoni MVB, da Silva Bolzani V, França SC, Pereira AMS, Furlan M. Antioxidant flavan-3-ols and flavonol glycosides from Maytenus aquifolium. Phytother Res 2003; 17:913-6. [PMID: 13680823 DOI: 10.1002/ptr.1249] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [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: 11/09/2022]
Abstract
TLC autographic assay revealed, in the EtOAc extract obtained from leaves and root bark of Maytenus aquifolium (Celastraceae), the presence of fi ve compounds exhibiting antioxidant properties towards beta-carotene. They were isolated and identified as epigallocatechin (1), (+) ouratea-catechin (2), proanthocyanidin (3), kaempferol 3-O-alpha-L-rhamnopyranosyl (1-->6)-O-[beta-D-glucopyranosyl (1-->3)-O-alpha-L-rhamnopyranosyl-(1-->2)]-O-beta-D-glucopyranosyl (4) and quercetin 3-O-alpha-L-rhamnopyranosyl (1-->6)-O-[beta-D-glucopyranosyl (1-->3)-O-alpha-L-rhamnopyranosyl-(1-->2)]-O-beta-D-glucopyranosyl (5). The isolates were investigated for their redox properties using cyclic voltammetry and for their radical scavenging abilities through spectrophotometric assay on the reduction of 2,2-diphenyl-pycryl hydrazyl (DPPH). These results were correlated to the inhibition of beta-carotene bleaching on TLC autographic assay and to structural features of the flavonoids.
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Affiliation(s)
- Joaquim Corsino
- Instituto de Química, Universidade Estadual Paulista, Araraquara, SP, Brazil
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Pauletti PM, Castro-Gamboa I, Siqueira Silva DH, Young MCM, Tomazela DM, Eberlin MN, da Silva Bolzani V. New antioxidant C-glucosylxanthones from the stems of Arrabidaea samydoides. J Nat Prod 2003; 66:1384-1387. [PMID: 14575443 DOI: 10.1021/np030100t] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Three new C-glucosylxanthones, 2-(2'-O-trans-caffeoyl)-C-beta-d-glucopyranosyl-1,3,6,7-tetrahydroxyxanthone (1), 2-(2'-O-trans-cinnamoyl)-C-beta-d-glucopyranosyl-1,3,6,7-tetrahydroxyxanthone (2), and 2-(2'-O-trans-coumaroyl)-C-beta-d-glucopyranosyl-1,3,6,7-tetrahydroxyxanthone (3), were isolated from the stems of Arrabidaea samydoides, in addition to three known C-glucosylxanthones, mangiferin (4), 2-(2'-O-benzoyl)-C-beta-d-glucopyranosyl-1,3,6,7-tetrahydroxyxanthone (5), and muraxanthone (6). Their chemical structures were assigned on the basis of MS and 1D and 2D NMR experiments. Xanthones 1-6 showed moderate free radical scavenging activity against 1,1-diphenyl-2-picrylhydrazyl (DPPH) as well as antioxidant activity evidenced by redox properties measured on ElCD-HPLC.
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Affiliation(s)
- Patrícia Mendonça Pauletti
- NuBBE- Núcleo de Biossíntese, Bioensaios e Ecofisiologia de Produtos Naturais, Instituto de Química, Universidade Estadual Paulista, UNESP, CP 355, 14801-970, Araraquara, SP, Brazil
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Cardona Zuleta LM, Cavalheiro AJ, Siqueira Silva DH, Furlan M, Marx Young MC, Albuquerque S, Castro-Gamboa I, da Silva Bolzani V. seco-iridoids from Calycophyllum spruceanum (Rubiaceae). Phytochemistry 2003; 64:549-553. [PMID: 12943773 DOI: 10.1016/s0031-9422(03)00153-5] [Citation(s) in RCA: 14] [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] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Three seco-iridoids 7-methoxydiderroside, 6'-O-acetyldiderroside and 8-O-tigloyldiderroside, were isolated from the wood bark of Calycophyllum spruceanum together with the known iridoids loganetin, loganin and the seco-iridoids secoxyloganin, kingiside and diderroside. Their structures were elucidated by means of NMR and MS spectral data analysis. Using NOE correlations and coupling constants, the relative stereochemistry of the new derivatives was established. 7-Methoxydiderroside, 6'-O-acetyldiderroside and the known secoxyloganin and diderroside showed in vitro activity against trypomastigote forms of Trypanosoma cruzi, with IC(50) values of 59.0, 90.2, 74,2 and 84.9 microg/mL, respectively and were compared to the standard gentian violet (IC(50) 7.5 microg/ml).
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Affiliation(s)
- Luz Margarita Cardona Zuleta
- NuBBE-Núcleo de Bioensaios, Biossíntesse e Ecofisiologia de Produtos Naturais, Instituto de Química, Universidade Estadual Paulista, CP 355, CEP 14801-970, Araraquara, São Paulo, Brazil
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Cardoso CL, Siqueira Silva DH, Tomazela DM, Verli H, Young MCM, Furlan M, Eberlin MN, da Silva Bolzani V. Turbinatine, a potential key intermediate in the biosynthesis of corynanthean-type indole alkaloids. J Nat Prod 2003; 66:1017-1021. [PMID: 12880329 DOI: 10.1021/np020547m] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Extraction of the leaves of Chimarrhis turbinata has led to the isolation of turbinatine (1), a new corynanthean-type indole alkaloid, besides four known indole alkaloids, strictosidine, 5alpha-carboxystrictosidine, vallesiachotamine, and isovallesiachotamine. The structural determination of 1 was based on 1D and 2D spectroscopic data. An evaluation of the DNA-damaging activities of the isolates was performed by means of a bioassay using mutant strains of Saccharomyces cerevisiae, which indicated these compounds were weakly active.
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Affiliation(s)
- Carmen Lucia Cardoso
- Instituto de Química, Universidade Estadual Paulista, UNESP, CP 355, CEP 14-801-970, Araraquara, São Paulo, Brazil
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Hamerski L, Furlan M, Silva DHS, Cavalheiro AJ, Eberlin MN, Tomazela DM, da Silva Bolzani V. Iridoid glucosides from Randia spinosa (Rubiaceae). Phytochemistry 2003; 63:397-400. [PMID: 12770587 DOI: 10.1016/s0031-9422(03)00109-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
An iridoid glucoside: randinoside, along with five known iridoids: galioside, deacetylasperulosidic acid methyl ester, scandoside methyl ester, geniposide and gardenoside, were isolated from the stems of Randia spinosa. The structures were determined by spectroscopic analysis, including 2D NMR techniques.
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Affiliation(s)
- Lidilhone Hamerski
- NuBBE- Núcleo de Bioensaio, Biossíntese e Ecofisiologia de Produtos Naturais, Instituto de Química, Universidade Estadual Paulista- UNESP, CP-355,CEP 14800-900, Araraquara--SP, Brazil
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Dantas da Silva LL, Nascimento M, Siqueira Silva DH, Furlan M, da Silva Bolzani V. Antibacterial activity of a stearic acid derivative from Stemodia foliosa. Planta Med 2002; 68:1137-1139. [PMID: 12494347 DOI: 10.1055/s-2002-36346] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
From the hexane-soluble fraction of an ethanol extract from leaves and stems of Stemodia foliosa (Scrophulariaceae), the new stearic acid 4-[(n-pentoxy)phenethyl] ester (1) was isolated. This compound exhibited antibacterial properties at 10 microg/mL concentration by using disc diffusion method against Gram-positive bacteria Bacillus cereus and Bacillus subtilis and fast-acid bacterium Mycobacterium fortuitum. The structure of the new compound was elucidated by spectroscopic methods and by chemical conversion.
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Abstract
The bioassay-guided fractionation of the ethanol extract from Nectandra grandiflora leaves led to the isolation of two flavonol glycosides which inhibited the bleaching of beta -carotene on the TLC assay. Both compounds had their molecular structures elucidated by means of extensive use of uni- and bidimensional NMR techniques and were identified as 3-O-beta -rhamnosylkaempferol and 3-O-beta -rhamnosylquercetine.
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