111 results on '"Manfron, Melânia Palermo"'
Search Results
2. Determination of phytochemical composition, cytotoxicity, genotoxicity and mutagenicity of the hydroethanolic extract of Dolichandra unguis-cati L. leaves in human leukocytes
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Brondani, Juliana Calil, de Lima, Rachel, Machado, Michel Mansur, and Manfron, Melânia Palermo
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- 2020
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3. Peanut leaf extract has antioxidant and anti-inflammatory activity but no acute toxic effects
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Cossetin, Jocelene Filippin, da Silva Brum, Evelyne, Casoti, Rosana, Camponogara, Camila, Dornelles, Rafaela Castro, Maziero, Maiara, Tatiane de David Antoniazzi, Caren, Guex, Camille Gaube, Ramos, Andiara Prattes, Pintos, Francielle Guedes, Engelmann, Ana Martiele, Melazzo de Andrade, Cinthia, Manfron, Melânia Palermo, Oliveira, Sara Marchesan, de Freitas Bauermann, Liliane, Sagrillo, Michele Rorato, Machado, Alencar Kolinski, Soares Santos, Adair Roberto, and Trevisan, Gabriela
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- 2019
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4. Topical formulation containing Ilex Paraguariensis extract increases metalloproteinases and myeloperoxidase activities in mice exposed to UVB radiation
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Cuelho, Camila Helena Ferreira, Alves, Geórgia de Assis Dias, Lovatto, Marina Ortiz, Bonilha, Iuri França, Barbisan, Fernanda, da Cruz, Ivana Beatrice Manica, Oliveira, Sara Marchesan, Fachinetto, Roselei, do Canto, Gizele Scotti, and Manfron, Melânia Palermo
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- 2018
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5. Ovary and fruit morphology and anatomy of Amphilophium crucigerum
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Casoti, Rosana, Manfron, Melânia Palermo, and de Oliveira, João Marcelo Santos
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- 2016
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6. Phytochemical characterisation, antioxidant capacity, and in vitro toxicity of Richardia brasiliensis gomes crude extracts
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Dornelles, Rafaela Castro, primary, Guex, Camille Gaube, additional, da Cruz, Ritiel Corrêa, additional, de Lima, Rachel, additional, Nogueira-Librelotto, Daniele Rubert, additional, Ugalde, Gustavo de Andrade, additional, Faccin, Henrique, additional, Machado, Alencar Kolinski, additional, Machado, Michel Mansur, additional, Viana Silva, Carine, additional, Manfron, Melânia Palermo, additional, and Bauermann, Liliane de Freitas, additional
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- 2022
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7. Phytochemical characterisation, antioxidant capacity, and in vitro toxicity of Richardia brasiliensis gomes crude extracts.
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Dornelles, Rafaela Castro, Guex, Camille Gaube, da Cruz, Ritiel Corrêa, de Lima, Rachel, Nogueira-Librelotto, Daniele Rubert, Ugalde, Gustavo de Andrade, Faccin, Henrique, Machado, Alencar Kolinski, Machado, Michel Mansur, Viana Silva, Carine, Manfron, Melânia Palermo, and Bauermann, Liliane de Freitas
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OXIDANT status ,SPRING ,EXTRACTS ,TRADITIONAL medicine ,OXIDATIVE stress - Abstract
Richardia brasiliensis is a species used in folk medicine and rich in active compounds. In this study, the extracts were submitted to UHPLC-ESI-MS/MS analysis and total polyphenols, tannins, and flavonoids assays. Besides, it was determined its antioxidant capacity, oxidative stress markers and toxicological profile. Fourteen polyphenols were found and, in the dosages, a slight change in the concentrations in each extract was observed. Regarding the antioxidant capacity, the responses were different in the methods used. There was an increase in lipid peroxidation, and NO, however total ROS remained unchanged. The cells remained more than 90% viable and the extracts did not cause damage to single strands of DNA, with the exception of the crude autumn and spring extracts at 500 µg/mL. The results found in this study suggest that extracts are potentially toxic to human leukocyte cells in high concentrations; however, more studies should be performed in different cell lines. [ABSTRACT FROM AUTHOR]
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- 2023
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8. Anti-inflammatory activity and identification of the Verbena litoralis Kunth crude extract constituents
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Lima, Rachel de, primary, Brondani, Juliana Calil, additional, Dornelles, Rafaela Castro, additional, Lhamas, Cibele Lima, additional, Faccin, Henrique, additional, Silva, Carine Viana, additional, Dalmora, Sérgio Luiz, additional, and Manfron, Melânia Palermo, additional
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- 2020
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9. Phytochemical study, an evaluation of the antioxidant potential and the antimicrobial activity of Inga semialata (Vell.) C. Mart. hydroalcohol extract
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Maziero, Maiara, primary, Lovatto, Marina Ortiz, additional, Lorenzoni, Vinícius Victor, additional, Moraes, Greice Graziela, additional, Dornelles, Rafaela Castro, additional, Sagrillo, Michele Rorato, additional, Horner, Rosmari, additional, and Manfron, Melânia Palermo, additional
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- 2019
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10. Preliminary phytochemical analysis and evaluation of the antioxidant and anti-proliferative effects of Plinia peruviana leaves: an in vitro approach
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Graziela Moraes, Greice, primary, Mazziero, Maiara, additional, Lovatto, Marina, additional, Dornelles, Rafaela Castro, additional, Nogueira-Librelotto, Daniele Rubert, additional, Reuter, Cézane Priscila, additional, Ortolan, Silvio, additional, da Silva, Chana de Medeiros, additional, and Manfron, Melânia Palermo, additional
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- 2019
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11. Preliminary phytochemical analysis and evaluation of the antioxidant and anti-proliferative effects of Plinia peruviana leaves: an in vitro approach.
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Graziela Moraes, Greice, Mazziero, Maiara, Lovatto, Marina, Dornelles, Rafaela Castro, Nogueira-Librelotto, Daniele Rubert, Reuter, Cézane Priscila, Ortolan, Silvio, da Silva, Chana de Medeiros, and Manfron, Melânia Palermo
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ANTIOXIDANT analysis ,REACTIVE oxygen species ,HELA cells ,BREAST cancer ,CERVICAL cancer - Abstract
Plinia peruviana (Poir.) Govaerts (Myrtaceae) occurs from Pará to Rio Grande do Sul states, Brazil. The leaf extract of this species was investigated. The total of polyphenols and flavonoid contents were determined by spectrophotometric techniques. Antioxidant activity by the oxygen radical absorbance capacity (ORAC) and anti-proliferative activity was tested against the MCF-7 and HeLa lines. The amount of polyphenols from the lyophilized extract was 944 ± 0.0856 mg GAE/g, moreover, total flavonoid content of the extract of 531.8 ± 0.0040 mg RE/g extract. This study performed the first pharmacological exploration of the leaves of P. peruviana. Our results demonstrated the antioxidant and anti-proliferative effects of this specie on MCF-7 and HeLa cell lines. This makes this specie an interesting medicinal plant for human epithelial cervical cancer and human breast cancer anti-proliferative approach. [ABSTRACT FROM AUTHOR]
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- 2021
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12. Acute and subacute toxicity and chemical constituents of the hydroethanolic extract of Verbena litoralis Kunth
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de Lima, Rachel, primary, Guex, Camille Gaube, additional, da Silva, Andreia Regina Haas, additional, Lhamas, Cibele Lima, additional, dos Santos Moreira, Karen Luise, additional, Casoti, Rosana, additional, Dornelles, Rafaela Castro, additional, da Rocha, Maria Izabel Ugalde Marques, additional, da Veiga, Marcelo Leite, additional, de Freitas Bauermann, Liliane, additional, and Manfron, Melânia Palermo, additional
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- 2018
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13. Evaluation of acute and subacute toxicity of hydroethanolic extract of Dolichandra unguis-cati L. leaves in rats
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Calil Brondani, Juliana, primary, Reginato, Fernanda Ziegler, additional, da Silva Brum, Evelyne, additional, de Souza Vencato, Marina, additional, Lima Lhamas, Cibele, additional, Viana, Carine, additional, da Rocha, Maria Izabel Ugalde Marques, additional, de Freitas Bauermann, Liliane, additional, and Manfron, Melânia Palermo, additional
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- 2017
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14. Phytochemical study, an evaluation of the antioxidant potential and the antimicrobial activity of Inga semialata (Vell.) C. Mart. hydroalcohol extract.
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Maziero, Maiara, Lovatto, Marina Ortiz, Lorenzoni, Vinícius Victor, Moraes, Greice Graziela, Dornelles, Rafaela Castro, Sagrillo, Michele Rorato, Horner, Rosmari, and Manfron, Melânia Palermo
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HIGH performance liquid chromatography ,EXTRACTS - Abstract
Inga semialata (Vell.) C. Mart. belongs to the family Fabaceae. It is known for its therapeutic properties, highlighting its antimicrobial and antioxidant potential. The objective of the present work was to obtain crude extract leaves of Inga semialata, to identify and quantify active compounds, to evaluate the antioxidant potential of the crude extract in vitro, as well as to determine its antimicrobial activity. The crude extract was obtained by the maceration process. The identified and quantified of compounds present in the crude extract of Inga semialata was performed by high performance liquid chromatography. The evaluation of the antioxidant potential of the extract was realized by in vitro tests (DPPH, diacetate dichlorofluorescein test and nitric oxide test) and the evaluation of the antimicrobial activity was carried out using the minimum inhibitory concentration methodology. [ABSTRACT FROM AUTHOR]
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- 2020
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15. Antinociceptive activity and mechanism of action of hydroalcoholic extract and dichloromethane fraction of Amphilophium crucigerum seeds in mice
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De Prá, Samira Dal Toé, primary, Ferro, Paula Ronsani, additional, Milioli, Alessandra Marcon, additional, Rigo, Flávia Karine, additional, Chipindo, Orlando Justo, additional, Camponogara, Camila, additional, Casoti, Rosana, additional, Manfron, Melânia Palermo, additional, de Oliveira, Sara Marchesan, additional, Ferreira, Juliano, additional, and Trevisan, Gabriela, additional
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- 2017
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16. Antiinflammatory activity and biochemical parameters of the ethanol extract of Nopalea cochenillifera (L.) Salm-Dyck (Cactaceae)
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Necchi, Raquel M.M., Maki, Tiago D.T., Canto, Gizele S. do, Moresco, Rafael N., Dalmora, Sérgio Luiz, and Manfron, Melânia Palermo
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antiinflammatory ,granuloma, Nopalea cochenillifera ,toxicity ,Granuloma ,Farmacia ,Experimentación Animal ,Extractos Vegetales - Abstract
We evaluated the antiinflammatory activity of ethanol 70 % extract of Nopalea cochenillifera in a model of induction of granulomatous tissue and the kidney and liver toxicity through serum dosage in rats. During 7 days were administered orally 1.5 ml, 3 times a day, of the ethanol extract of cladodes of N. cochenillifera. We used nimesulide 5 mg/kg/day as positive control and 20 % propylene glycol as a negative control. After the treatment period, we assessed the formation of granulomas and the serum levels of AST, ALT, albumin, creatinine and urea in all groups, noting that the animals treated with the extract showed 53.5 % inhibition formation of granulomatous tissue while the positive control group showed 58.5 %, confirming a significant antiinflammatory activity. There was not a significant elevation of biochemical markers in relation to negative control., Colegio de Farmacéuticos de la Provincia de Buenos Aires
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- 2011
17. Stem morphoanatomy of Poiretia tetraphylla (Poiret) Burkart (Leguminosae)
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Royer, Lauri A.J., Necchi, Raquel M.M., Marín, Aline, Zanetti, Gilberto Dolejal, and Manfron, Melânia Palermo
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botanical quality control ,Poiretia tetraphylla ,stem morphoanatomy ,Farmacia ,Plantas Medicinales - Abstract
Poiretia tetraphylla is an erect herb to subshrub, perennial, native to Brazil, Argentina, Paraguay and Uruguay. It is popularly known as erva-de-touro-miúda and used in traditional medicine as tonic, in stomach disorders and verminosis. The stem is angular, striate, glabrous with copious amounts of oblong and translucent glands. The epidermis is uniestratified and persistent, stomata well pronounced, thick, smooth and plain cuticle and oval mucilaginous glandular formations. The cortex has parenchyma cells, and the innermost layer is distinguished from others by having large cells with little cytoplasmic content. In this region, protecting the phloem, has a group up to six layers of sclerenchyma fibers. The central cylinder presents vascular system of sifonestelic continuous ectofolic type. The pith is composed of parenchyma cells with intercellular space of meatus type. The whole of these diagnostic traits are useful on the botanical quality control of this species., Colegio de Farmacéuticos de la Provincia de Buenos Aires
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- 2011
18. Phenolic compounds and antioxidant activity of the leaves of Plantago australis L. (Plantaginaceae)
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Nemitz, Marina C., Banderó Filho, Vilmar, Zanetti, Gilberto Dolejal, Zanotto, Camila Z., and Manfron, Melânia Palermo
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Farmacia ,DPPH ,flavonoids ,HPLC ,phenols ,Plantago australis - Abstract
The present study was designed to explore the total phenols and flavonoids content in leaf fractions of Plantago australis L., and their radical scavenging activity by 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. The free radical scavenging abilities of fractions were determined as: ethyl acetate fraction > crude extract > butanolic fraction > chloroformic fraction. Besides having the highest radical scavenging activity, the ethyl acetate fraction also obtained the highest total phenols and flavonoids contents. Chemical profile of this fraction was obtained by high performance liquid chromatography (HPLC) with photodiode array detector. The comparison with the literature for the ultraviolet espectra for the chromatographic peaks allowed finding compounds similar to neolignins, cinnamic acids derivates, flavonoid (luteolin 7-glycoside) and anthocyanic pigments., Colegio de Farmacéuticos de la Provincia de Buenos Aires
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- 2010
19. Leaf morphoanatomy of Poiretia tetraphylla (Poiret) Burkart (Leguminosae)
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Royer, Lauri A.J., Zanetti, Gilberto Dolejal, Necchi, Raquel M.M., and Manfron, Melânia Palermo
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Plantas medicinales ,Farmacología ,Anatomía vegetal ,Farmacia ,leaf ,leguminosae ,morphoanatomy ,pharmacobotanic ,Poiretia - Abstract
Poiretia tetraphylla (Poiret) Burkart (Leguminosae) is a perennial plant that occurs in countryside formations of Brazil, Argentine, Paraguay and Uruguay. This plant is used in traditional medicine as stimulating and stomach disorders. The aim of this work was the determination of morphoanatomy parameters, seeking the botanical control of quality of P. tetraphylla leaves. The morphological analysis was made by means of a stereomicroscope. The anatomical analysis in paradermic and transversal sections was made with hydroxide ethyl methacrylate inclusion. The leaves are characteristically 4-leaflets, with membranaceous consistency, in general oblong to rhomboidal and entire margin. The epidermis one layered has stomata concentrated in the abaxial face. The mesophyll is dorsiventral. The palisade parenchyma presents itself with 2 to 3 cell layers and spongy parenchyma constitutes itself of 4 to 6 layers of irregular cells. In distal portions occurs a pair of secretory cells structure. The vascular bundles are collateral closed and are found protected by a parenchymatous sheath. The whole of these diagnostic traits are useful on the botanical control of quality of this species., Colegio de Farmacéuticos de la Provincia de Buenos Aires
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- 2010
20. Morphology and Histochemistry of Cladodes of Nopalea cochenillifera (L.) Salm-Dyck (Cactaceae)
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Necchi, Raquel M.M., Zanetti, Gilberto Dolejal, Maki, Tiago D.T., Royer, Lauri A.J., and Manfron, Melânia Palermo
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cactaceae ,histochemistry, morphoanatomical ,nopalea ,pharmacobotany ,Farmacología ,Biología vegetal ,Farmacia - Abstract
Morphoanathomical parameters, for macroscopic and microscopic analyses of the cladodes of Nopalea cochenillifera, plant recognized traditionally like medicinal, allow his authenticity. The phylloclades have wavyness and areoles with three straight and hyaline thorns. The uniseriate epidermis has parallelocytic stomata and mucilaginous cells, followed by an annular collenchyma and a palisade parenchyma on average with eight cell layers. The vascular region is constituted by isolated vascular bundles of the open collateral type. The central cylinder is composed by a parenchymatic medulla. The mucilage structures and the druses of calcium oxalate are present in cortical region in and central cylinder. They are in bigger number near to the vascular bundles. The druses also take place in the first layer of the collenchyma. These morphoanathomical characteristics, when taken together, are consistent in the botanical control of quality of this vegetable sort., Colegio de Farmacéuticos de la Provincia de Buenos Aires
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- 2010
21. Morpho-anatomy of Glechon spathulata Benth. (Lamiaceae) leaves
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Banderó Filho, Vilmar, Zanetti, Gilberto Dolejal, Canto, Gizele S. do, Dalmora, Sérgio Luiz, Nemitz, Marina C., and Manfron, Melânia Palermo
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Glechon spathulata ,Lamiaceae ,plantas medicinales ,morfo-anatomía ,farmacobotánica ,Farmacia ,plantas medicinais ,morfo-anatomia ,farmacobotânica ,medicinal plants ,morpho-anatomy ,pharmacobotany - Abstract
Glechon spathulata Benth. (Lamiaceae) is a native plant in Brazil popularly known as "mangerona-do-campo". This plant is a perennial sub-shrub with aromatic leaves used in South America as a condiment and in traditional medicine for different purposes, such as inflammations, dyspepsia, diaphoretic, expectorant and antiseptic in catarrhal affections of the respiratory tract, colds, bronchitis and laryngitis. In this study, morpho-anatomical parameters of leaves of this plant were determimed, by macro and microscopic analysis, aiming to help its diagnosis as a pharmaceutical ingredient. The leaves are sub-sessile with spatulate shape and subrevolute margin, finely crenulate in the middle-upper. The uniseriate epidermis shows straight to slightly sinuous cells, diacytic stomata and non-glandular and glandular trichomes. The mesophyll is dorsiventral, displaying an uniseriate palisade parenchyma and a little compact spongy parenchyma, with an average of 4 cell layers. The vascular bundles are collateral closed. There was no presence of crystals. These morphological and anatomical features, when taken together, contribute to quality control of plant leaves of G. spathulata as a pharmaceutical ingredient., Colegio de Farmacéuticos de la Provincia de Buenos Aires
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- 2010
22. Subprodutos da uva como promotores de crescimento em dietas de frangos de corte de 1 a 21 dias de idade - DOI: 10.4025/actascianimsci.v31i2.820
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Rotava, Rui, Zanella, Irineo, Campos, Edílson Gonçalves, Pain, Aline, Manfron, Melânia Palermo, and Alves, Sydney Hartz
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growth performance ,poultry ,grape by-products ,desempenho zootécnico ,frango de corte ,subprodutos de uva - Abstract
An experiment was conducted to determine the effects of phenolic compounds from grape by-products (Vitis vinifera) as growth promoters in the diets of broilers between 1 and 21 days of age. Six hundred Ross male chicks were raised from 1 to 21 days of age. The experimental design was completely randomized a 6 x 2 factorial scheme (six diets, inoculated or not inoculated with strains of Escherichia coli), and five repetitions consisting of 10 animals each. Each bird received an isonutritive basal diet consisting of grape by-products or antibiotics as follows: T1-negative control; T2 – positive control-0.05% of flavomycin and colistin sulphate; T3 – 0.04% defatted grape seed extract; T4 – 0.1% grape seed (WGS); T5 – 0.47% WGS; and T6 – 2.35% WGS. Analyzed variables were: weight gain, feed intake, average weight gain, body weight, feed conversion and production efficiency index. Including grape by-products did not influence parameters of rate growth or show any growth promoter activity. Inoculating with E. coli decreased weight gain and body weight. The results did not recommend the use of grape by-product Foi realizado um experimento para se avaliar os efeitos da utilização de compostos fenólicos contidos em subprodutos da uva (Vitis vinifera) como promotores de crescimento em dietas de frango de corte. Foram utilizados 600 pintos de corte machos Ross, de um a 21 dias de idade, distribuídos em delineamento inteiramente casualizado, com seis tratamentos, inoculados ou não, com cepas de Escherichia coli, constituindo-se fatorial 6 x 2 com cinco repetições de dez aves cada uma. Foi utilizada uma dieta isonutritiva composta por ração inicial basal, com subproduto de uva ou antibiótico, de acordo com os seguintes tratamentos: T1-controle negativo; T2-0,05% de flavomicina e sulfato de colistina; T3-0,04% extrato de semente de uva desengordurada; T4-0,1% de semente de uva integral (SUI); T5-0,47% de SUI e T6-2,35% de SUI. As variáveis analisadas foram: ganho de peso, consumo de ração, ganho de peso médio, peso final, conversão alimentar e índice de eficiência produtiva. A inclusão de subprodutos da uva não influenciou as variáveis zootécnicas nem apresentou atividade promotora de crescimento. A inoculação com E. coli piorou o ganho de peso e o peso final. Os resultados não recomendam a utilização de subprodutos de uva
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- 2009
23. Atividade antibacteriana, antioxidante e tanante de subprodutos da uva
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Rotava, Rui, Zanella, Irineo, Silva, Leila Picolli da, Manfron, Melânia Palermo, Ceron, Carla Speroni, Alves, Sydney Hartz, Karkow, Ana Kátia, and Santos, João Paulo Aquino
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atividade antimicrobiana ,antimicrobial activity ,tannins ,atividade antioxidante ,antioxidant activity ,grape by-products ,subprodutos da uva ,taninos - Abstract
O objetivo neste trabalho foi determinar-se in vitro a atividade antibacteriana, antioxidante e tanante de subprodutos da uva (Vitis vinifera) para seu aproveitamento como ingredientes alternativos na indústria avícola e na conservação de alimentos. Compostos polares foram extraídos da semente de uva desengordurada, em solução contendo acetona, água e ácido acético, resultando em 10,3% de rendimento de extrato de semente de uva desengordurada (ESUD). O ESUD apresentou alta atividade antibacteriana in vitro contra cepas de S. aureus e E. coli, mas não contra cepas de Salmonella sp. A atividade antioxidante do ESUD foi comparável ao ácido ascórbico. A atividade tanante foi considerada baixa para a semente de uva e alta para o ESUD. The aim of this research was to determine in vitro the antibacterial, antioxidant and tanning activity from grape by-products (Vitis vinifera), for its use as alternative ingredients in the poultry industry and food conservation. Polar compound had been extracted of the defatted grape seed (SUD) in a solution with acetone, water and acetic acid, in the 90: 9.5: 0.5 ratio respectively, resulting in a yield of 10.3% of defatted grape seed extract (ESUD). ESUD has high antibacterial activity against strains of S. aureus and E. coli, but not against Salmonella sp. The antioxidant activities of the ESUD had comparable to the ascorbic acid. The capacity to bind proteins was considered low for the seed and high for the ESUD.
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- 2009
24. UMA REVISÃO SOBRE AS PROPRIEDADES FARMACOLÓGICAS, MORFOANATOMIA E TOXICICIDADE DE XANTHIUM CAVANILLESII SCHOUW (ASTERACEAE)
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Dalla Lana, Daiane Flores, primary, Martins Necchi, Raquel Medina, additional, Casoti, Rosana, additional, and Manfron, Melânia Palermo, additional
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- 2012
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25. ANTI-INFLAMMATORY ACTIVITY AND CONCENTRATIONS OF POLYPHENOLS, FLAVONOIDS ETHANOL EXTRACT OF Dodonaea viscosa (SAPINDACEAE)
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Necchi, Raquel Medina Martins, primary, Ercolani, Cauriane, additional, Dalmora, Sergio Luiz, additional, and Manfron, Melânia Palermo, additional
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- 2012
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26. PHYSICO-CHEMICAL QUALITY CONTROL AND DOSAGE OF TOTAL POLYPHENOLS, FLAVONOIDS OF Morus alba LEAVES (MORACEAE)
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Pereira, Camila Bugnotto, primary, Marin, Aline, additional, Necchi, Raquel Medina Martins, additional, Maki, Tiago Trevisan, additional, and Manfron, Melânia Palermo, additional
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- 2012
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27. Acaricide activity of leaves extracts of Sambucus australis Schltdl. (Caprifoliaceae) at 2% on engorged females of Rhipicephalus (Boophilus) microplus
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Krawczak, Felipe da Silva, primary, Buzatti, Andréia, additional, Pivoto, Felipe Lamberti, additional, Sangioni, Luís Antônio, additional, Vogel, Fernanda Silveira Flores, additional, Botton, Sônia de Avila, additional, Zanetti, Gilberto Dolejal, additional, and Manfron, Melânia Palermo, additional
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- 2011
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28. Atividade acaricida in vitro de Glechon spathulata Benth. sobre teleóginas de Rhipicephalus (Boophilus) microplus
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Buzatti, Andréia, primary, Krawczak, Felipe da Silva, additional, Pivoto, Felipe Lamberti, additional, Vogel, Fernanda Silveira Flores, additional, Botton, Sônia de Avila, additional, Zanetti, Gilberto Dolejal, additional, Manfron, Melânia Palermo, additional, and Sangioni, Luís Antonio, additional
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- 2011
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29. Ação acaricida in vitro de Tropaeolum majus sob teleóginas de Rhipicephalus (Boophilus) microplus
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Pivoto, Felipe Lamberti, primary, Buzatti, Andréia, additional, Krawczak, Felipe da Silva, additional, Camillo, Giovana, additional, Sangioni, Luís Antônio, additional, Zanetti, Gilberto Dolejal, additional, Manfron, Melânia Palermo, additional, and Vogel, Fernanda Silveira Flores, additional
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- 2010
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30. Estudo morfoanatômico das folhas de Cuphea glutinosa Cham. & Schltdl., Lythraceae
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Zago, Adriana Maria, primary, Manfron, Melânia Palermo, additional, Morel, Ademir Farias, additional, and Zanetti, Gilberto Dolejal, additional
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- 2010
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31. Morfonatomia do caule de Cuphea glutinosa Cham. & Schltdl. (Lythraceae)
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Zago, Adriana Maria, primary, Manfron, Melânia Palermo, additional, Morel, Ademir Farias, additional, and Zanetti, Gilberto Dolejal, additional
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- 2009
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32. Atividade antibacteriana, antioxidante e tanante de subprodutos da uva
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Rotava, Rui, primary, Zanella, Irineo, additional, Silva, Leila Picolli da, additional, Manfron, Melânia Palermo, additional, Ceron, Carla Speroni, additional, Alves, Sydney Hartz, additional, Karkow, Ana Kátia, additional, and Santos, João Paulo Aquino, additional
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- 2009
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33. Atenção Farmacêutica ao Cuidador de Paciente com Doença de Alzheimer.
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COSSETIN, Jocelene FILIPPIN, MAZIERO, Maiara, SANTOS, Geraci, COSSETIN, Luciana Filippin, and MANFRON, Melânia Palermo
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- 2015
34. Atividade Anti-inflamatória e Avaliação da Toxicidade do Extrato Hidroetanólico de Morus alba (Moraceae).
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Pereira, Camila Bugnotto, Marin, Aline, Dalmora, Sérgio Luiz, Martins Necchi, Raquel Medina, Moresco, Rafael Noal, and Manfron, Melânia Palermo
- Abstract
Copyright of Revista de Ciências Farmacêuticas Básica e Aplicada is the property of Revista de Ciencias Farmaceuticas Basica e Aplicada and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2013
35. Atividade Antimicrobiana e Citotoxicidade do extrato bruto obtido de Morus Alba L. (Moraceae).
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Pereira, Camila Bugnotto, Marin, Aline, Dalmora, Sérgio Luiz, Necchi, Raquel Medina Martins, Rossato, Luana, Alves, Sydney Hartz, and Manfron, Melânia Palermo
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HEXANE ,CHLOROFORM ,ETHYL acetate ,STAPHYLOCOCCUS aureus infections ,CHLOROHYDROCARBONS ,ASPERGILLUS fumigatus - Abstract
Copyright of Revista de Ciências Farmacêuticas Básica e Aplicada is the property of Revista de Ciencias Farmaceuticas Basica e Aplicada and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2012
36. BIODIGESTÃO ANAERÓBICA: UMA ALTERNATIVA PARA USINAS DE LATICÍNIOS
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Manfron, Melânia Palermo, primary
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- 1991
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37. APROVEITAMENTO DO SORO DE QUEIJO PARA PRODUÇÃO DE METANO
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Manfron, Melânia Palermo, primary and Oliveira, Antonio Joaquim de, additional
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- 1991
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38. Acaricide activity in vitro of Glechon spathulata Benth. On engorged females of Rhipcephalus (Boophilus) microplus.
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Buzatti, Andréia, da Silva Krawczak, Felipe, Pivoto, Felipe Lamberti, Flores Vogel, Fernanda Silveira, de Avila Botton, Sônia, Zanetti, Gilberto Dolejal, Manfron, Melânia Palermo, and Sangioni, Luis Antonio
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ACARICIDES , *BOOPHILUS microplus , *PLANT extracts , *ETHANOL - Abstract
The aim of this study was to evaluate the in vitro acaricide efficiency of Glechon spathulata extracts on engorged females of Rhipcephalus (Boophilus) microplus. Engorged ticks were collected from crossbred cattle from one farm in São Pedro do Sul municipality, Rio Grande do Sul, Brazil. In vitro experiments consisted on the immersion tests of engorged females in solutions of G. spathulata, where treatments were made at triplicate with fractions and extracts at 2% concentration, diluted in water and ethanol. Crude dry extract of G. spathulata suspended in 70% ethanol presented an efficiency average of 99%, while the sante extract diluted in water demonstrated efficiency average of 72%. It was observed in 70% ethanol control difference in egg eclodibility,' however there was no in!etference in egg weight. The chloroform fraction of G. spathulata showed no efficacy in the test. The results obtained suggest that the hydroethanolic extract at 70% of G spathulata has significant acaricide activity in vitro. This research is the first communication of acaricidal effect of G. spathulata. [ABSTRACT FROM AUTHOR]
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- 2011
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39. Phytochemical analysis and evaluation of potential biological of Plinia peruviana leaves (POIR.) Govaerts
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Moraes, Greice Graziela, Manfron, Melânia Palermo, Silva, Chana de Medeiros da, Silva, Carine Viana, Lopes, Gilberti Helena Hübscher, Rhoden, Cristiano Rodrigo Bohn, and Valim, Andréia Rosane de Moura
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CCl4 ,Antiproliferativo ,Plinia peruviana ,Hepatoproteção ,Antioxidante ,Polifenóis ,Polyphenols ,Antiproliferative ,Antioxidant ,CIENCIAS DA SAUDE::FARMACIA [CNPQ] ,Hepatoprotective - Abstract
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES Medicinal plants have metabolites related to different biological activities. These include polyphenols, substances with high antioxidant capacity, antibacterial, cardioprotective, antiinflammatory, and promising candidates for anticancer agents. Plinia Peruviana (Poir.) Govaerts, popularly known as jabuticabeira, is widespread in Brazil, Argentina and Paraguay. Its fruits are used as food, and almost all parts of this species are used in traditional Brazilian medicine to treat skin irritations, flu, diarrhea, labyrinthitis, genitourinary problems, asthma and so far there are no biological studies related to the leaves of this species. Thus, the objective of this study was to determine the phytochemical profile of P. peruviana leaves, antioxidant, antiproliferative and hepatoprotective activity. The amount of polyphenols in the lyophilized extract was 944 ± 0.0856 mg of gallic acid equivalents (GAE) per g, in addition the total flavonoid content was 531.8 ± 0.0040 mg of rutin equivalents (RE) per g of extract. High performance liquid chromatography with diode array detector (HPLC-DAD) showed the presence of gallic acid, catechin, epicatechin and rutin. Regarding antioxidant activity, we obtained a value of 1941.1 ± 717.65 µM Trolox equivalents (TE) per g of extract. Based on the high antioxidant capacity, we obtained in the antiproliferative assay against tumor cell lines, IC50 values of 263.88 and 462.77 µg / mL (HeLa and MCF-7 respectively). In the in vivo hepatoprotective assay, thirty male rats weighing 200 - 250 g were divided into 5 groups: group 1 (control), group 2 (carbon tetrachloride control - CCl4), group 3 treated with silymarin 100 mg / kg and groups 4 and 5 with P. peruviana extract (50 mg / kg and 100 mg / kg respectively), orally for 14 days, followed by induction of liver injury with 10 mL / kg CCl4. Clinical biochemical profiles, antioxidant defense determination and histopathological examination were evaluated after treatment. A decrease in alanine aminotransferase (ALT) and alkaline phosphatase (AF) levels was more pronounced in animals given 50 mg / kg of P. peruviana extract. Comparing the induced group with the silymarin-treated group, no statistical reduction in hepatic adenosine deaminase (ADA) activity was observed. On the other hand, in the homogenized liver, treatment groups with P. peruviana 50 mg / kg and 100 mg / kg were able to reduce hepatic ADA activity by 15.26 % and 22.99 %, respectively. The concentration of 50 mg / kg of extract as well as the silymarin standard were able to decrease the signs of CCl4-induced necrosis. Therefore, the flavonoids present in the extract may be responsible for their antiproliferative and hepatoprotective capacity against CCl4-induced toxicity. As plantas medicinais apresentam metabólitos relacionados a diferentes atividades biológicas. Dentre estes, destacam-se os polifenóis, substâncias com alta capacidade antioxidante, antibacterianas, cardioprotetoras, anti-inflamatórias, além de promissores candidatos a agentes anticancerígenos. Plinia Peruviana (Poir.) Govaerts, popularmente conhecida como jabuticabeira, é difundida no Brasil, Argentina e Paraguai. Seus frutos são utilizados como alimento, e quase todas as partes desta espécie são utilizadas na medicina tradicional brasileira no tratamento de irritações da pele, gripe, diarreia, labirintite, problemas geniturinários, asma e até o momento não existem estudos biológicos relacionados às folhas desta espécie. Assim, o objetivo deste estudo foi determinar o perfil fitoquímico das folhas de P. peruviana, a atividade antioxidante, antiproliferativa e hepatoprotetora. A quantidade de polifenóis do extrato liofilizado foi 944 ± 0.0856 mg de equivalentes ácido gálico (EAG) por g, além disso, o conteúdo total de flavonoides foi de 531.8 ± 0.0040 mg de equivalentes de rutina (ER) por g de extrato. Em análise por cromatografia líquida de alta eficiência com detector de arranjo de diodos (CLAE-DAD), observou-se a presença de ácido gálico, catequina, epicatequina e rutina. Em relação à atividade antioxidante, obtivemos um valor de 1941.1 ± 717.65 µM de equivalentes Trolox (ET) por g de extrato. Com base na alta capacidade antioxidante, obtivemos no ensaio antiproliferativo contra linhagens de células tumorais, valores de IC50 de 263.88 e 462.77 µg / mL (HeLa e MCF-7 respectivamente). No ensaio hepatoprotetor in vivo, trinta ratos machos, pesando de 200 - 250 g, foram divididos em 5 grupos: grupo 1 (controle), grupo 2 (controle tetracloreto de carbono - CCl4), grupo 3 tratado com 100 mg / kg de silimarina e grupos 4 e 5 com extrato de P. peruviana (50 mg / kg e 100 mg / kg respectivamente), via oral por um período de 14 dias, seguido de indução de lesão hepática com 10 mL / kg de CCl4. Os perfis bioquímicos clínicos, determinação da defesa antioxidante e exame histopatológico foram avaliados após o tratamento. Uma diminuição dos níveis de alanina aminotransferase (ALT) e fosfatase alcalina (FA) foi mais pronunciada em animais administrados com 50 mg / kg do extrato de P. peruviana. Comparando-se o grupo induzido com o grupo tratamento com silimarina, não foi observada redução estatística na atividade da adenosina deaminase (ADA) hepática. Por outro lado, no fígado homogeneizado, os grupos P. peruviana 50 mg / kg e 100 mg / kg foram capazes de reduzir a atividade da ADA hepática em 15.26 % e 22.99 %, respectivamente. A concentração de 50 mg / kg de extrato, assim como o padrão silimarina foram capazes de diminuir os sinais de necrose induzida por CCl4. Portanto, os flavonoides presentes no extrato podem ser responsáveis por sua capacidade antiproliferativa em linhagens de células tumorais e hepatoprotetora contra a toxicidade induzida por CCl4.
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- 2019
40. Phytochemical analysis and pharmacological activity in vitro and in vivo of Schinus molle L
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Lovatto, Marina Ortiz, Manfron, Melânia Palermo, Machado, Michel Mansur, and Vaucher, Lauren Rosa Crossetti
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Planta medicinal ,Caracterização química ,Pleurisia ,Medicinal plant ,Chemical characterization ,CIENCIAS DA SAUDE::FARMACIA [CNPQ] ,Therapeutic potential ,Potencial terapêutico ,Pleurisy - Abstract
The species S. molle L. is widely distributed in Rio Grande do Sul. The aerial parts of S. molle are popularly used for different therapeutic purposes as antiinflammatory, anti-haemorrhagic, antiseptic, mild laxative, astringent, anti-asthmatic, digestive stimulant, menstrual, diuretic and tonic disorder. The need to seek new therapeutic alternatives for respiratory diseases, preferably with minimal side effects, justifies this work, both from the point of view of scientific and social interest. The present work aimed to obtain the crude extract of S. molle leaves by the maceration process, perform phytochemical analysis, identify and quantify compounds present in the extract, evaluate biological activities, such as anti-inflammatory and antimicrobial activity, as well as evaluate cyto and genotoxicity and antioxidant potential against reactive oxygen and nitrogen species. S. molle extract after analysis showed concentrations of 79,14; 231,67; 52,65 mg equivalents/g of extract that were determined by phytochemical dosages in S. molle extract for total phenols, tannins and flavonoids, respectively. S. molle was able to capture reactive oxygen and nitrogen species with antioxidant capacity with IC50 = 30.54 ± 0.41 μg/mL. It did not present cytotoxicity and genotoxicity, being a safety indicator. Antimicrobial activity was not significant in relation to the microorganisms Klebsiella pneumoniae, Escherichia coli, Pseudomonas aeruginosa and Mycobaterium tuberculosis, M. abcessus, M. massiliense, M. fortuitum and M. smegmatis. The extract showed no hematological alterations, even in the group induced pleurisy with 2% carrageenan. The flavonoids rutin (58,63 mg/g) and quercetin (0,665 mg/g) were identified and quantified. A espécie S. molle L. é amplamente distribuída no Rio Grande do Sul. As partes aéreas da S. molle são utilizadas popularmente para diferentes finalidades terapêuticas como anti-inflamatória, anti-hemorrágica, antisséptico, laxativo leve, adstringente, antiasmática, estimulante digestivo, distúrbio menstrual, diurético e tônico. A necessidade de buscar novas alternativas terapêuticas para doenças respiratórias, de preferência, com o mínimo de efeitos colaterais, justifica este trabalho, tanto pelo ponto de vista do interesse cientifico, quanto pelo social. O presente trabalho teve por objetivo obter o extrato bruto das folhas de S. molle pelo processo de maceração, realizar análise fitoquímica, identificar e quantificar compostos presentes no extrato, avaliar atividades biológicas, como atividade antiinflamatória e antimicrobiana, bem como, avaliar cito e genotoxicidade e potencial antioxidante frente as espécies reativas de oxigênio e nitrogênio. O extrato de S. molle após as análises apresentou concentrações de 79,14; 231,67; 52,65 mg de equivalentes/g de extrato que foram determinadas por dosagens fitoquímicas no extrato de S. molle para fenóis totais, taninos e flavonoides, respectivamente. A S. molle mostrou-se capaz de capturar espécies reativas de oxigênio e nitrogênio com capacidade antioxidante com IC50=30,54±0,41 μg/mL. Não apresentou citotoxicidade e genotoxicidade, sendo um indicativo de segurança. A atividade antimicrobiana foi não significativa frente aos microrganismos Klebsiella pneumoniae, Escherichia coli, Pseudomonas aeruginosa e Mycobaterium tuberculosis, M. abcessus, M. massiliense, M. fortuitum e M. smegmatis. O extrato não demostrou alterações hematológicas, mesmo no grupo induzido pleurisia com carragenina 2%. Os flavonoides rutina (58,63 mg/g) e quercetina (0,665 mg/g) foram identificados e quantificados.
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- 2019
41. Study of chromatographic, eletroforetic methods and in vitro bioassays for the analysis of rivaroxaban
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Walter, Maurício Elesbão, Dalmora, Sergio Luiz, Malesuik, Marcelo Donadel, Bajerski, Lisiane, Silva, Carine Viana, and Manfron, Melânia Palermo
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Enantiômeros ,Capillary chromatography ,Rivaroxabana ,Cromatografia eletrocinética micelar ,Rivaroxaban ,Enantiomers ,Cromatografia liquida em fase reversa ,Micellar electrokinetic ,Bioassay ,CIENCIAS DA SAUDE::FARMACIA [CNPQ] ,Bioensaios ,Reversed-phase liquid chromatography ,Chiral liquid chromatography ,Cromatografia líquida quiral - Abstract
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES Rivaroxaban (RIV) is an oral anticoagulant with the mechanism of action based on the inhibition of the factor Xa of the coagulation cascade. It is clinically used for the prophylaxis and treatment of thromboembolic diseases and nonvalvular atrial fibrillation. In the present research, a stability-indicating micellar electrokinetic capillary chromatography (MEKC) method was validated for the analysis of RIV in tablets dosage forms, and the results were compared to those of the anti-factor Xa bioassay and the reversed-phase high performance liquid chromatography (RP-HPLC) method. Besides, the chiral-HPLC was optimized to separate the enantiomers. The MEKC method was performed on a fused-silica capillary (effective length 40 cm and 50 μm i.d.), maintained at 25ºC, and the separation voltage was 30 kV. The background electrolyte solution consisted of 75 mM MES buffer and 25 mM sodium dodecyl sulphate (SDS) solution at pH 2.0. Injections were carried out using a pressure mode at 50 mbar for 60 s, with detection by a photodiode array detector set at 202 nm. The migration time was 2.81 min and the method was linear over the concentration range of 0.5 – 50 μg/mL (r² = 0.9991). The detection limit (DL) and quantitation limit (QL) were 0.16 μg/mL and 0.54 μg/mL, respectively. Specificity and stability-indicating capability of the method were established in degradation studies, which also showed that there was no interference of the excipients. The accuracy was 100.67% with bias lower than 1.60%. The proposed method was applied to the quantitative analysis of RIV in tablet dosage forms and the results were correlated to those of the anti-factor Xa assay and the validated RP–HPLC method showing values 0.66% higher and 0.59% lower, respectively, with non-significant differences (p > 0.05). The results show that the MEKC could constitute an alternative for the analysis of the tablets. Then, the chiral-HPLC was performed to separate the enantiomers, which were subjected to the anti-factor Xa assay and cytotoxicity test, showing low activity for the R-enantiomer and lower toxicity. The results of the physicochemical methods were compared to those of the anti-factor Xa assay, which showed non-significant differences (p > 0.05). Besides, the analytical capability of each method was emphasized, and only the chiral RP-HPLC was able to detect and quantify the enantiomeric forms. In this context, the present research represents a contribution to guarantee the quality, to assure the safety and therapeutic efficacy of the pharmaceutical products, and to establish bases for advances in the study of the generic drug containing RIV. A rivaroxabana (RIV) é um anticoagulante de uso oral que apresenta mecanismo de ação baseado na inibição do fator Xa (FXa) da cascata de coagulação. É indicada para prevenção e tratamento da trombose venosa profunda (TVP) e para pacientes com fibrilação arterial não-valvar. No presente trabalho foi desenvolvido e validado método por cromatografia eletrocinética micelar (MEKC) para avaliação de RIV em comprimidos, e os resultados foram comparados com aqueles fornecidos pelo bioensaio da atividade antifator Xa e pelo método por cromatografia líquida em fase reversa (CL-FR). Além disso foi otimizado método por cromatografia líquida quiral (CL-quiral) para separação dos enantiômeros. O método por MEKC foi executado com capilar de sílica fundida (40 cm de comprimento efetivo x 50 μm d.i.), mantido a temperatura de 25ºC e a tensão aplicada foi de 30 kV. A solução eletrolítica foi composta de ácido morfolinoetano sulfônico (MES) 75 mM e dodecilsulfato de sódio (SDS) 25 mM, em pH 2,0. O tempo de injeção foi de 60s com pressão de 50 mBar, e detecção por arranjo de diodos (DAD) a 202 nm. O tempo de migração da RIV foi de 2,81 min e a linearidade do método determinada na faixa de concentração de 0,50 − 50 μg/mL (r2 = 0,9991). Os limites de detecção e quantificação foram 0,16 e 0,54 μg/mL, respectivamente. A especificidade foi avaliada em estudos de degradação, e demonstrou-se também, que não houve interferência dos excipientes. A exatidão foi de 100,67%, com erro relativo inferior a 1,60%. A média dos teores encontrados pela aplicação do método proposto foi 0,66% maior e 0,59% menor, em relação aos resultados do bioensaio da atividade antifator Xa e do método por CL-FR, respectivamente, com diferenças não significativas (p > 0,05). Demonstrou-se que o método por MEKC representa alternativa para a análise de comprimidos de RIV. Executaram-se, então, estudos por CL-quiral e os enantiômeros separados foram submetidos a avaliação da atividade biológica e citotoxicidade, observando-se que a forma S é ativa e a R apresenta baixa atividade e menor citotoxicidade. Os resultados obtidos pelos métodos físico-químicos foram comparados com os fornecidos pelo ensaio biológico do antifator Xa, demonstrando que não apresentam diferença significativa (p > 0,05). Além disso, destacou-se a capacidade analítica de cada método, e que somente a cromatografia quiral possibilita a análise qualitativa e quantitativa das formas enantioméricas. Neste contexto, a pesquisa representa contribuição analítica para assegurar a qualidade, contribui para garantir a segurança e eficácia terapêutica dos produtos farmacêuticos, e estabelece bases para avanços no estudo de medicamento genérico contendo RIV.
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- 2019
42. Phytochemical and biological study of the hydroalcoolic extract of Inga marginata Willd
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Maziero, Maiara, Manfron, Melânia Palermo, Lopes, Gilberti Helena Hübscher, and Souto, Ricardo Bizogne
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Gross extracts of leaves ,Caracterização química ,Extrato bruto de folhas ,Chemical characterization ,CIENCIAS DA SAUDE::FARMACIA [CNPQ] ,Therapeutic potential ,Potencial terapêutico ,Inga marginata - Abstract
Medicinal plants have been used since antiquity by man to cure various diseases. Even today, they are widely used by the population in a palliative way, for healing and also associated with conventional medicines. Inga marginata belongs to the family Fabaceae, genus Inga, has several popular nomenclatures such as ingá and ingá-mirim is a leguminous plant, with a wide distribution in Latin America. It has antidiarrheal, antimicrobial, antinociceptive, anti- inflammatory properties, among others. The objective of the present work was to obtain the crude extract of the leaves of I. marginata by the maceration process, perform phytochemical characterization, identify and quantify compounds present in the extract, evaluate biological activities, such as antinociceptive and antimicrobial activity, as well as evaluate cytotoxicity, genotoxicity and antioxidant potential against reactive oxygen and nitrogen species. From the phytochemical characterization of I. marginata, the following concentrations were found: 110.60; 100.38 and 27.04 mg/g for total polyphenols, flavonoids and tannins, respectively. Using HPLC, the following compounds were identified and quantified as gallic acid (1,837 mg/g), epicatechin (22.493 mg/g) and rutin (5.217 mg/g). The hydroalcoholic extract did not present cytotoxicity and genotoxicity. The high antioxidant power of the extract was demonstrated by means of antioxidant tests (DPPH – IC50 17,306 μg/mL; DCFH - DA - 10 and 60 μg/mL; ORAC - 2952,944 μmol Trolox/g and nitric oxide - 15 μg/mL) under analysis. The antimicrobial activity was evaluated against bacterial strains of Staphylococcus aureus, Bacillus cereus, Enterobacter aerogenes, Staphylococcus epidermidis, Micrococcus luteus, Enterococcus faecalis, Escherichia coli, Klebsiella pneumoniae, Salmonella and Pseudomonas aeruginosa. The best results were obtained for S. epidermidis (128 μg mL), S. aureus (128 μg/mL), M. luteus (256 μg/mL) and K. pneumoniae (256 μg/mL). The antinociceptive evaluation also showed promising results, with a concentration of 100 mg/kg more effective. Thus, due to the favorable results, it is possible to suggest the use of I. marginata in a safe and effective way. As plantas medicinais são usadas desde a antiguidade pelo homem para curar diversas enfermidades. Ainda hoje, são muito utilizadas pela população de forma paliativa, para a cura e também associadas aos medicamentos convencionais. Inga marginata pertence à família Fabaceae, gênero Inga, possui diversas nomenclaturas populares como ingá e ingá-mirim, é uma planta leguminosa, com ampla distribuição na América Latina. Possui propriedades antidiarreica, antimicrobiana, antinociceptiva, anti-inflamatória, dentre outras. O presente trabalho teve por objetivo obter o extrato bruto das folhas de I. marginata pelo processo de maceração, realizar caracterização fitoquímica, identificar e quantificar compostos presentes no extrato, avaliar atividades biológicas, como a atividade antinociceptiva e antimicrobiana, bem como, avaliar a citotoxicidade, genotoxicidade e potencial antioxidante frente a espécies reativas de oxigênio e nitrogênio. A partir da caracterização fitoquímica de I. marginata foram encontradas as seguintes concentrações 110,60; 100,38 e 27,04 mg/g para polifenóis totais, flavonoides e taninos, respectivamente. Utilizando HPLC foram identificados e quantificados os seguintes compostos ácido gálico (1,837 mg/g), epicatequina (22,493 mg/g) e rutina (5,217 mg/g). O extrato hidroalcoólico não apresentou citotoxicidade e genotoxicidade. Por meio de testes antioxidantes (DPPH – IC50 17,306 μg/mL; DCFH-DA – 10 e 60 μg/mL; ORAC – 2952,944 μmol Trolox/g e Óxido nítrico – 15 μg/mL) foi demonstrado o alto poder antioxidante do extrato em análise. A atividade antimicrobiana foi avaliada frente as cepas bacterianas de Staphylococcus aureus, Bacillus cereus, Enterobacter aerogenes, Staphylococcus epidermidis, Micrococcus luteus, Enterococcus faecalis, Escherichia coli, Klebsiella pneumoniae, Salmonella e Pseudomonas aeruginosa, sendo que os melhores resultados obtidos foram para S. epidermidis (128 μg/mL), S. aureus (128 μg/mL), M. luteus (256 μg/mL) e K. pneumoniae (256 μg/mL). A avaliação antinociceptiva também demonstrou resultados promissores, sendo a concentração de 100 mg/Kg a mais efetiva. Dessa forma, devido aos resultados favoráveis, pode-se sugerir o uso de I. marginata de maneira segura e eficaz.
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- 2019
43. Anti-inflammatory and antioxidant evaluation of tucumã extract (Astrocaryum aculeatum): in vitro and in vivo studies
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Cabral, Fernanda Licker, Leal, Daniela Bitencourt Rosa, Moreira, Cleci Menezes, and Manfron, Melânia Palermo
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Flavonoids ,Flavonóides ,Carotenoides ,Astrocaryum aculeatum ,CIENCIAS DA SAUDE::FARMACIA [CNPQ] ,Carotenoids ,Tucumã - Abstract
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES With the rise of new concepts such as functional foods, nutraceuticals and phytomedicines, allied to the use of traditional medicine, products of plant origin are in evidence. Brazil is a highlight in the development of new medicines from these products since it presents the greatest vegetal biodiversity in the world and occupies the third place in fruit production. Within this context, there is the Tucumã (Astrocaryum aculeatum), an Amazonian fruit widely used in the north of the country. Knowing the wide use and popular use as a treatment for several diseases, the objective of this work was to evaluate the antioxidant and anti- inflammatory effects of the Tucumã extract in different doses. For this, cultures of cells (RAW 264.7), activated with phytohemagglutinin (PHA) and treated with extract of A. aculeatum at doses of 1, 10, 30, 50, 100, 300 μg/ml were used. The results demonstrated an in vitro anti- inflammatory activity by decreasing the viability and proliferation of PHA-induced macrophages (P
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- 2018
44. Chemical composition, anti-inflammatory activity and acute and subacute toxicity of Verbena litoralis kunth
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Lima, Rachel de, Manfron, Melânia Palermo, Vaucher, Lauren Rosa Crossetti, Bochi, Guilherme Vargas, Parodi, Thaylise Vey, and Machado, Michel Mansur
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Granuloma ,Toxicidade aguda e subaguda ,Análise fitoquímica ,Phytochemical analysis ,CIENCIAS DA SAUDE::FARMACIA [CNPQ] ,Gervãozinho-do-campo ,Acute and subacute toxicity - Abstract
Verbena litoralis Kunth belongs to the Verbenaceae family, which is native to South America and can be found in tropical and subtropical regions, especially in the temperate regions of the Southern Hemisphere. It is popularly known as gervãozinho-do-campo or erva-de-pai-caetano and used in traditional medicine as antidiarrheal, febrifuge, gastrointestinal disorders, inflammation of the uterus and ovary. Although widely used for therapeutic purposes, the anti-inflammatory properties, toxic characteristics as well as the phytochemical composition of the crude extract of the plant are not yet fully understood. Thus, the objective of this work was to identify the phytochemical constituents in the crude extract of the aerial parts of Verbena litoralis, to evaluate the anti-inflammatory activity and to determine the toxicity. Chlorogenic acid, vanillic acid, caffeic acid, p-coumaric acid, ferulic acid, luteolin, apigenin, trans-cinnamic acid, quercetin, griselinoside, hispidulin 7-O-glucuronide, acetylacteoside and nodifloretin were identified by CLUE/EM. The crude extract and the ethyl acetate fraction showed significant inhibitory activity in the formation of the granulomatous tissue, indicating a potential anti-inflammatory action of Verbena litoralis. In the acute toxicity analysis a single dose of 2000 mg/kg of V. litoralis was administered orally to rats of both sexes. After administration the plant can be considered safe (category 5) according to the OECD guide. In the subacute toxicity study the plant extract was administered orally to male and female rats at doses of 100, 200 and 400 mg/kg for 28 days. Hematological, biochemical and histological parameters were analyzed. Male rats treated with 400 mg/kg extract showed a significant increase in erythrocyte count and in the enzyme aspartate amino transferase. Histological examination of the male and female liver showed some alterations such as sinusoidal dilatation and vascular dilation, respectively, but the hepatocytes remained intact. When analyzing the renal histology, some modifications were observed in the groups treated with 400 mg/kg of plant extract in both sexes, such as dilatation and congestion of the vessels and increase of the tubular lumen, but it was believed that they were not enough to alter the function of this tissue, since creatinine levels remained unchanged and the proximal and distal convoluted tubules remained intact. Therefore, this result brings some caution when making use of the plant for successive days. Verbena litoralis Kunth pertence à família Verbenaceae, é nativa da América do Sul, podendo ser encontrada nas regiões tropicais e subtropicais, principalmente nas regiões temperadas do hemisfério sul. É conhecida popularmente como gervãozinho-do-campo ou erva-de-pai-caetano e utilizada na medicina tradicional como antidiarreico, febrífugo, em desordens gastrintestinais, em inflamações do útero e ovário. Embora seja amplamente utilizada com fins terapêuticos, ainda não estão totalmente esclarecidas as propriedades anti-inflamatórias, características tóxicas, bem como a composição fitoquímica do extrato bruto da planta. Assim, o objetivo deste trabalho foi identificar os constituintes fitoquímicos no extrato bruto das partes aéreas de Verbena litoralis, avaliar a atividade anti-inflamatória e determinar a toxicidade. Através de CLUE/EM foram identificados ácido clorogênico, ácido vanílico, ácido cafeico, ácido p-cumárico, ácido ferúlico, luteolina, apigenina, ácido trans-cinâmico, quercetina, griselinosídeo, hispidulina 7-O-glucuronídeo, acetilacteosideo e nodifloretin. O extrato bruto e a fração acetato de etila apresentaram atividade inibitória significativa na formação do tecido granulomatoso, indicando uma potencial ação anti-inflamatória de Verbena litoralis. Na análise de toxicidade aguda uma dose única de 2000 mg/Kg de V. litoralis foi administrado oralmente a ratos de ambos os sexos. Após a administração a planta pode ser considerada segura (categoria 5) de acordo com o guia da OECD. No estudo de toxicidade subaguda o extrato da planta foi administrado oralmente a ratos machos e fêmeas nas doses de 100, 200 e 400 mg/Kg durante 28 dias. Foram analisados parâmetros hematológicos, bioquímicos e histológicos. Os ratos machos tratados com 400 mg/Kg de extrato apresentaram um aumento significativo na contagem de eritrócitos e na enzima aspartato amino transferase. No exame histológico do fígado machos e fêmeas apresentaram algumas alterações como dilatação sinusoidal e dilatação vascular, respectivamente, porém os hepatócitos permaneceram intactos. Ao analisar a histologia renal foram observadas algumas modificações nos grupos tratados com 400 mg/Kg do extrato vegetal em ambos os sexos tais como dilatação e congestão dos vasos e aumento da luz tubular, porém acredita-se que não foram suficientes para alterar a função deste tecido, uma vez que os níveis de creatinina permaneceram inalterados e os túbulos contorcidos proximal e distal permaneceram íntegros. Portanto, este resultado remete certa cautela ao fazer uso da planta durante sucessivos dias.
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- 2017
45. Evaluation of Baccharis trimera (Less) DC. (Asteraceae) protective effect on liver damage induced by carbon tetrachloride in rats
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Bonilha, Iuri de França, Manfron, Melânia Palermo, Bauermann, Liliane de Freitas, and Souto, Ricardo Bizogne
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Liver damage ,Fígado ,Liver ,Baccharis trimera ,Tetracloreto de carbono ,Hepatoprotetor ,Dano hepático ,CIENCIAS DA SAUDE::FARMACIA [CNPQ] ,Hepatoprotective ,Carbon tetrachloride - Abstract
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES The objective of this study was to evaluate the effect of Baccharis trimera hydroethanolic crude extract (BtHE), popularly known as carqueja, on CCl4 induced hepatic injury in Wistar rats. The liver is the main organ of metabolism and excretion of the human body, and is continually exposed to xenobiotics because of its strategic anatomical function. Liver diseases represent a significant health problem due to their limited complications and treatment possibilities. The phytotherapeutic researches for the treatment of hepatic disorders generally use animal models for the induction of hepatotoxicity, and the hepatic damage promoted by the administration of carbon tetrachloride (CCl4) is one of the most accepted and widespread models. Several species of Baccharis are widely used in folk medicine, mainly in the form of infusions, to treat various disorders, such as liver and gastrointestinal problems. The BtHE presented high levels of polyphenols (0.152 g GAE/100 g DW), flavonoids (19.07 g CE/100 g DW) and tannins (20.165 g CE/100 g DW) and a high antioxidant capacity, mainly for lipophilic substrates (59.23% inhibition of linoleic acid peroxidation). The extract promoted a slight synthesis of collagen in the liver, in agreement with the control group, and CCl4 did not promote significant fibrosis. In the evaluation of oxidative stress in hepatic tissue, the extract protected the liver from lipoperoxidation (300 mg/kg) and carbonylation of proteins (300 and 600 mg/kg) (p
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- 2017
46. Potency assessment of interferon beta – 1b by validated chromatographic methods and bioassay
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Silva, Francielle Santos da, Dalmora, Sergio Luiz, Silva, Lucélia Magalhães da, and Manfron, Melânia Palermo
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Recombinant human interferon β 1b ,Cromatografia líquida em fase reversa ,Validação ,Interferon β 1b humano recombinante ,Validation ,Bioensaio ,Correlação ,Bioassay ,Size-exclusion liquid chromatography ,CIENCIAS DA SAUDE::FARMACIA [CNPQ] ,Cromatografia líquida por exclusão molecular ,Reversed-phase liquid chromatography ,Correlation - Abstract
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES Interferon is a cytokine with antiviral, antiproliferative and immunomodulatory properties that influences cell metabolism, growth and differentiation. The recombinant human interferon β 1b (rhIFNβ-1b) is a non-glycosylated protein produced by the expression in Escherichia coli by the recombinant DNA technology. Structurally, it is a polypeptide chain containing 165 amino acids, molecular weight of 18.5 kDa and isoelectric point of 9.2. The rhIFNβ-1b is clinically used to treat multiple sclerosis. In the present work, reversed-phase liquid chromatography (RP-LC) and size exclusion liquid chromatography (SE-LC) methods were developed and validated for the evaluation of rhIFNβ-1b in biopharmaceutical formulations. The gradient RP-LC method was carried out on a Jupiter C4 column (250 mm x 4.6 mm i.d.) maintained at 30°C. The mobile phase A consisted of 0.1% (v/v) trifluoroacetic acid (TFA) in water and the mobile phase B was 0.1% (v/v) TFA in acetonitrile, run at a flow rate of 1.0 mL/min. The SE-LC method was carried out on a BioSep-SEC-S 2000 column (300 mm x 7.8 mm i.d.) maintained at 25°C. The mobile phase consisted of 1 mM monobasic potassium phosphate, 8 mM sodium phosphate dibasic and 200 mM sodium chloride buffer pH 7.4, run isocratically at a flow rate of 0.8 mL/min. Chromatographic separations were obtained with retention times of 31.87 and 17.78 min, and calibration curves were linear over the concentration range of 1-200 μg/mL (0.032 – 6.4 MIU/mL) (r2 = 0.9998) and 0.50-200 μg/mL (0.016 – 6.4 MIU/mL) (r2 = 0.9999), respectively, for RP-LC and SE-LC, with photodiode array (PDA) detection at 214 nm. The limits of detection and quantitation were 0.47 and 1.57 μg/mL, respectively, for the RP-LC and 0.10 and 0.34 μg/mL for the SE-LC. The specificities were established in degradation studies, which also showed that there was no interference from the formulation excipients. Equally, the accuracy was 100.42 and 100.45%, with bias lower than 0.69 and 0.82%, respectively. Moreover, the in vitro cytotoxicity test of related proteins and higher molecular weight forms showed significant differences (p < 0.05) compared to intact molecule. The validated methods were applied for the determination of rhIFNβ-1b in biotechnology-derived products, giving higher mean differences of the estimated content/potencies of 1.61 and 1.05% for the RP-LC and SE-LC, related to the in vitro assay. It is concluded that represents a contribution to establish new alternatives to monitor stability, improve quality control and thereby assure therapeutic efficacy of the biotechnology-derived medicine. O interferon é uma citocina que apresenta ação antiviral, antiproliferativa e imunomoduladora, e influencia o metabolismo, crescimento e diferenciação das células. O interferon β 1b humano recombinante (rhIFNβ-1b) não-glicosilado, é produzido por engenharia genética, e expresso em Escherichia coli. Estruturalmente possui 165 aminoácidos, massa molecular de 18,5 KDa e ponto isoelétrico de 9,2. O rhIFNβ-1b é indicado clinicamente para o tratamento de esclerose múltipla. No presente trabalho foram desenvolvidos e validados métodos por cromatografia líquida em fase reversa (CL-FR) e por exclusão molecular (CL-EM) para avaliação do rhIFNβ-1b em formulações de produtos biofarmacêuticos. No método por CL-FR, foi utilizada coluna Jupiter C4 (250 mm x 4,6 mm d.i), mantida a 30°C. A fase móvel A foi constituída de ácido trifluoracético (TFA) 0,1% (v/v) em água, e a fase móvel B por TFA 0,1% (v/v) em acetonitrila, eluídas em gradiente com fluxo de 1 mL/min. No método por CL-EM foi utilizada coluna BioSep-SEC-S 2000 (300 mm x 7.8 mm d.i), mantida a 25°C. A fase móvel foi constituída de tampão fosfato de potássio monobásico 1 mM, fosfato de sódio dibásico 8 mM e cloreto de sódio 200 mM, pH 7,4, eluída em vazão isocrática de 0,8 mL/min. Para ambos os métodos utilizou-se detector de arranjo de diodos (DAD) a 214 nm. A separação cromatográfica foi obtida nos tempos de 31,87 e 17,78 min, respectivamente, para os métodos por CL-FR e CL-EM. As curvas de calibração foram lineares na faixa de concentração de 1–200 μg/mL (0,032-6,4 MUI/mL) (r2 = 0,9998) e 0,50–200 μg/mL (0,016-6,4 MUI/mL) (r2 = 0,9999), respectivamente, para os métodos por CL-FR e CL-EM. Os limites de detecção e quantificação foram 0,47 e 1,57 μg/mL, respectivamente, para o método por CL-FR e 0,10 e 0,34 μg/mL por CL-EM. A especificidade foi avaliada em estudos de degradação, e também demonstrou-se que não houve interferência dos excipientes. A exatidão foi de 100,42 e 100,45% com bias inferiores a 0,69 e 0,82%, respectivamente. Além disso, realizou-se o teste de citotoxicidade in vitro das formas degradadas, as quais apresentaram diferença significativa em relação a forma intacta (p < 0,05). Os métodos propostos foram aplicados para avaliação da potência de rhIFNβ-1b em formulações biofarmacêuticas, e os resultados foram comparados com bioensaio, observando-se diferenças das médias de teor/potência de 1,61 e 1,05% superiores para os métodos por CL-FR e CL-EM. Conclui-se que a pesquisa representa contribuição para estabelecer procedimentos, para monitorar a estabilidade e aprimorar o controle de qualidade, garantindo a segurança e eficácia terapêutica do produto biotecnológico.
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- 2017
47. Evaluation of chemical composition, antioxidant activity and acute oral toxicity of Jatropha gossypiifolia L. (Euphorbiaceae)
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Silveira, Rudinei da Silva, Silva, Carine Viana, Manfron, Melânia Palermo, and Souto, Ricardo Bizogne
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Atividade antioxidante ,Acute oral toxicity ,Antioxidant activity ,Compostos fenólicos ,UHPLC-MS/MS ,Terpenoids ,Terpenóides ,Toxicidade oral aguda ,CIENCIAS DA SAUDE::FARMACIA [CNPQ] ,Jatropha gossypiifolia L ,Phenolic compounds - Abstract
The Jatropha gossypiifolia L. is popularly known as a purple-backed or purple-pine, belonging to the family Euphorbiaceae, of the genus Jatropha. It is distributed in Brazil predominantly in the Amazon region, Caatinga and Mata Atlântica (FÉLIX-SILVA et al. 2014). In popular medicine it is used for the treatment of peptic ulcers, diabetes, neoplasias, diarrhea, as cicatrizante and diuretic (MARIZ et al., 2006). The main secondary metabolites identified in its chemical constitution are: phenolic acids, alkaloids, terpenes, steroids, flavonoids, lignans and tannins. The biological activities evidenced in the species were: antioxidant, antidiarrheal, antimalarial, antimicrobial, antiviral, sedative, anticonvulsant, besides hypotensive and vasorelaxant potential (MARIZ et al., 2010). The objective of this study was to characterize and quantify the phenolic compounds and terpenoids as analytical markers, using ultra-high performance liquid chromatography coupled to mass spectrometry (UHPLC-MS / MS), as well as to investigate antioxidant activity in vitro against superoxide anion, hydroxyl and peroxyl radicals and to evaluate the acute oral toxicity of the hydroethanolic extract of the leaves of J. gossypiifolia. The extracts were obtained by infusion and maceration of the dry plant material (leaves and fruits) in the thrEHE different crops, and the infusion was not used for the toxicity test. After the maceration, the obtained hydroethanolic extract was lyophilized and resuspended in water for the fractionation with solvents in the increasing order of their polarities: hexane, chloroform, ethyl acetate and n-butanol. The presence of the major phenolic compounds, such as catechin, p-coumaric acid, ferulic acid and luteolin, were found in the hydroethanolic extract and infusion. Also in the hydroethanolic extract, the presence of three triterpene compounds (α-amirin, β-amirin and lupeol) was identified. The anti-radical activity tested in the infusion, hydroethanolic extract and ethyl acetate and butanol fractions, showed a higher in vitro antioxidant activity in the hydroethanolic extract (96.6 ± 3.0) and infusion (99.7 ± 13.9) in the concentrations of 0.1% w / v and 1.0% w / v, respectively. The hydroethanolic extract from the leaves of J. gossypiifolia, tested in acute oral toxicity, had an LD50 of between 2000-5000 mg / kg and was characterized as low toxicity, according to the Organization for Economic Cooperation and Development (OECD 423., 2001) guideline. No significant changes (p> 0.05, ANOVA) were observed in the biochemical and hematological parameters of the test group analyzed, in relation to the control group. Thus, the study suggests that the presence of catechin, as the major compound in the infusion, may be related to the hypotensive effect and that the pharmacological properties of the flavonoids and phenolic acids found may be associated with the popular use of this medicinal plant. A Jatropha gossypiifolia L. é popularmente conhecida como pião-roxo ou pinhão-roxo, pertencente à família Euphorbiaceae, do gênero Jatropha, encontra-se distribuída no Brasil predominantemente na região Amazônica, na Caatinga e Mata Atlântica (FÉLIX-SILVA et al., 2014). Na medicina popular é utilizada para o tratamento de úlceras pépticas, diabetes, neoplasias, diarreias, como cicatrizante e diurético (MARIZ et al., 2006). Os principais metabólitos secundários identificados na sua constituição química são: ácidos fenólicos, alcaloides, terpenos, esteroides, flavonoides, lignanas e taninos. As atividades biológicas evidenciadas na espécie foram: antioxidante, antidiarreico, antimalárico, antimicrobiano, antiviral, sedativo, anticonvulsivante, além de potencial hipotensor e vasorelaxante (MARIZ et al., 2010). O objetivo deste estudo foi caracterizar e quantificar os compostos fenólicos e terpenóides como marcadores analíticos, empregando a cromatografia líquida de ultra-alta eficiência acoplada a espectrometria de massas (UHPLC-MS/MS), bem como, investigar a atividade antioxidante in vitro frente aos radicais ânion superóxido, hidroxil e peroxil e avaliar a toxicidade oral aguda do extrato hidroetanólico das folhas de J. gossypiifolia. Os extratos foram obtidos por infusão e maceração do material vegetal seco (folhas e frutos) nas três diferentes safras, sendo que a infusão não foi utilizada para o teste de toxicidade. Após a maceração, o extrato hidroetanólico obtido foi liofilizado e ressuspendido em água para o fracionamento com solventes na ordem crescente de suas polaridades: hexano, clorofórmio, acetato de etila e n-butanol. No extrato hidroetanólico e na infusão foi constatada a presença dos compostos fenólicos majoritários, tais como a catequina, ácido p-cumárico, ácido ferúlico e luteolina. Também no extrato hidroetanólico, identificou-se a presença de três compostos triterpênicos (α-amirina, β-amirina e lupeol). A atividade anti-radicalar testada na infusão, extrato hidroetanólico e frações acetato de etila e butanol, demonstrou uma maior atividade antioxidante in vitro no extrato hidroetanólico (96,6±3,0) e infusão (99,7±13,9) nas concentrações de 0,1% (m/v) e 1,0% (m/v), respectivamente. O extrato hidroetanólico das folhas de J. gossypiifolia, testado na toxicidade oral aguda, apresentou DL50 estimada entre 2000-5000mg/Kg e caracterizou-se como de baixa toxicidade, de acordo com a diretriz da Organização para a Cooperação e Desenvolvimento Econômico (OECD 423., 2001), não conferindo alterações significativas (p>0,05, ANOVA) aos parâmetros bioquímicos e hematológicos do grupo teste analisado, em relação ao grupo controle. Assim, o estudo sugere que a presença de catequina, como composto majoritário na infusão, pode estar relacionado ao efeito hipotensor e ainda que as propriedades farmacológicas dos flavonóides e ácidos fenólicos encontrados, possam ser associados ao uso popular dessa planta medicinal.
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- 2017
48. Phytochemical composition, evaluation of the toxicological profile and protective activity against mercury intoxication of Dolichandra unguis-cati L. leaves
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Brondani, Juliana Calil, Manfron, Melânia Palermo, Bauermann, Liliane de Freitas, Nascimento, Patrícia Severo do, and Parodi, Thaylise Vey
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Intoxicação mercurial ,Toxicity ,Unha de gato ,Chlorogenic acid ,Toxicidade ,CIENCIAS DA SAUDE::FARMACIA [CNPQ] ,Mercuric intoxication ,Ácido clorogênico - Abstract
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES Dolichandra unguis-cati L., popularly known as unha de gato, is a native plant of Brazilian flora, belonging to the Bignoniaceae family and widely used for therapeutic and ornamental purposes. It has been traditionally used in popular medicine mainly due to its anti-inflammatory, anti-tumor, anti-malarial and febrifuge activities. However, studies on the biological properties and safety in the use of this plant species are still lacking in the literature. Thus, the objective of this work was to investigate the phytochemical composition, toxicological profile and protective activity of the hydroethanolic extract of Dolichandra unguis-cati leaves (CELD) against the mercurial intoxication of Wistar rats. The phytochemical composition was established by spectrophotometric methods and UHPLC/MS. The toxicological analysis initially comprised in vitro studies of cytotoxicity (cell viability), genotoxicity (DNA comet) and mutagenicity (micronuclei). Followed by the ex vivo toxicities, acute (OECD 423) and subacute (OECD 407), complemented by the in vitro lethality test using Artemia salina. The protective action of the extract, against mercury chloride intoxication (HgCl2) of rats, was assessed through biochemical and hematological parameters and by the determination of the antioxidant capacity of CELD, by DPPH and β-carotene. As a result, 12 chemical constituents of the extract were identified and quantified, which may be related to the potential antioxidant activity verified by DPPH (IC50 29.18 μg/mL) and β-carotene (39% inhibition of oxidation) tests. In the concentrations of 10 and 100 μg/mL, CELD was able to decrease the cellular viability of human leukocytes in a dose-dependent manner, suggesting a possible anti-tumor action. In addition, none of the concentrations tested (1, 10 and 100 μg/mL) resulted in genotoxicity and mutagenicity. In the acute toxicity study, we observed that the treatment with CELD 2000 mg/kg did not cause mortality or changes in body weight and behavior of rats, classifying the species as category 5 of OECD 423, with a LD50 estimated between 2000-5000 mg/kg, complemented by the LD50 of 3539.54 μg/mL obtained in the test with Artemia salina. The subacute administration of CELD, at doses of 100, 200 and 400 mg/kg for 28 days, also did not present death of animals, changes in behavior and body weight. In both ex vivo studies, a reduction in AST and ALT dosages was observed, indicating a possible hepatoprotective effect. The subacute treatment was also effective in reducing total cholesterol in all concentrations tested, suggesting a potential applicability of CELD in the dyslipidemia treatment. Ultimaly, CELD 400 mg/kg attenuated the toxic effects resulting from HgCl2 intoxication through restoration of the oxidative balance, decrease in AST, ALT, BUN and CRE dosages, increase in WBC levels and reversal of the inversion between lymphocytes and neutrophils. In this way, CELD demonstrated to present low toxicity and potential biological activities that justify its uses as a medicinal plant. Dolichandra unguis-cati L., popularmente conhecida como unha de gato, é uma planta nativa da flora brasileira, pertencente à família Bignoniaceae e muito utilizada para fins terapêuticos e ornamentais. Dentre as principais aplicações na medicina popular, destacam-se as atividades anti-inflamatória, anti-tumoral, anti-malárica e febrífuga. No entanto, estudos a respeito das propriedades biológicas e da segurança na utilização desta espécie vegetal ainda são escassos na literatura. Assim, o objetivo deste trabalho foi investigar a composição fitoquímica, o perfil toxicológico e a atividade protetora do extrato hidroetanólico das folhas de Dolichandra unguis-cati (CELD) frente à intoxicação mercurial de ratos Wistar. A composição fitoquímica foi estabelecida por métodos espectrofotométricos e UHPLC/MS. A análise toxicológica compreendeu inicialmente os estudos in vitro de citotoxicidade (viabilidade celular), genotoxicidade (DNA cometa) e mutagenicidade (micronúcleos). Em seguida, as toxicidades ex vivo, aguda (OECD 423) e subaguda (OECD 407), complementadas pelo teste de letalidade in vitro por Artemia salina. A ação protetora do extrato, frente a intoxicação de ratos por cloreto de mercúrio (HgCl2), foi analisada através de parâmetros bioquímicos, hematológicos e pela determinação da capacidade antioxidante de CELD, por DPPH e β-caroteno. Como resultado, foram identificados e quantificados 12 constituintes químicos do extrato, os quais podem estar relacionados com a potencial atividade antioxidante verificada nos testes por DPPH (IC50 29.18 μg/mL) e β-caroteno (39% de inibição da oxidação). Nas concentrações de 10 e 100 μg/mL, CELD foi capaz de diminuir a viabilidade celular de leucócitos humanos, de maneira dose-dependente, sugerindo uma possível ação anti-tumoral. Além disso, nenhuma das concentrações testadas (1, 10 e 100 μg/mL) resultou em genotoxicidade e mutagenicidade. No estudo de toxicidade aguda, observamos que o tratamento com CELD 2000 mg/kg não causou mortalidade nem mudanças no peso corporal e no comportamento dos ratos, classificando a espécie na categoria 5 da OECD 423, com DL50 estimada entre 2000-5000 mg/kg, dados complementados pela DL50 de 3539.54 μg/mL obtida no teste com Artemia salina. A administração subaguda de CELD, nas doses de 100, 200 e 400 mg/kg por 28 dias, também não ocasionou morte de animais, alterações comportamentais e no peso corporal. Em ambos os estudos ex vivo foi observada a redução nas dosagens de AST e ALT, indicando um possível efeito hepatoprotetor. O tratamento subagudo mostrou-se ainda eficiente na redução do colesterol total em todas as concentrações testadas, sugerindo uma potencial aplicabilidade de CELD no tratamento de dislipidemias. Por fim, CELD 400 mg/kg atenuou os efeitos tóxicos resultantes da intoxicação por HgCl2, através da restauração do balanço oxidativo, diminuição nas dosagens de AST, ALT, BUN e CRE, aumento nos níveis de WBC e reversão da inversão entre linfócitos e neutrófilos. Desta maneira, CELD demonstrou apresentar baixa toxicidade e potenciais atividades biológicas que corroboram para o seu uso como planta medicinal.
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- 2016
49. Ilex paraguariensis A. St. Hil.: effects in the prevention on UVB irradiation-induced changes skin
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Cuelho, Camila Helena Ferreira, Manfron, Melânia Palermo, Canto, Gizele Scotti do, Fachinetto, Roselei, and Silva, Chana de Medeiros da
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Pele ,Yerba mate ,Photoprotection ,Colágeno ,Fotoproteção ,Metaloproteinases ,Collagen ,CIENCIAS DA SAUDE::FARMACIA [CNPQ] ,Erva-mate ,Metalloproteinase ,Skin - Abstract
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES Daily basis, we are exposed to many environmental factors such as ultraviolet radiation and pollution, which are sources of free radicals. Although it‟s the most responsible for the biological effects related to skin cancer and photoagind, UVB radiation is only 10% of the total UV radiation can reach the Earth‟s surface. As a preventive measure, photo chemoprotectives, are oral or topical products incorporated plant extracts or isolated natural substances with antioxidant activity, inhibitors of MMPs and/or anti-inflamatory. Ilex paraguariensis A. St. Hil, known as yerba mate, is a native plant to South America. Previous studies showed high levels of bioactive cosmetic interest, such as: phenolic acids, flavonoids ant triterpenoid saponins. The main of the study was to investigate the potential photoprotective the crude extract of the leaves of Ilex paraguariensis in vitro e in vivo. The EXB was characterized by the dosages of the polyphenols, flavonoids and tannins by spectrophotometric methods; identifying and quantifying the chlorogenic acid and caffeic by LC/MS and HPLC; besides its antioxidant activity by in vitro methods. Cytotoxicity/Photostability and inhibitory activity of MMP-2 and -9 in different concentrations, were analyzed in vitro by measurement of cell viability in fibroblast culture (HFF-1 cells) and substrate zymography, respectively. The photoprotective effect of cream topic treatment containing EXB was evaluated in vivo by measuring the metalloproteinase activity, myeloperoxidase and collagen degradation, using heterogenic mice exposed to UVB (0,23 J/cm2). The flavonoid contents, polyphenols and tannins were 200 mg EQ/g; 265,4 mg EAG/g e 158,7 g EC/g. Through the HPLC, the chlorogenic acid content was quantified (19.26 mg/g) and caffeic acid (4.27 mg/g). The antioxidant potential was analyzed by the methods DPPH (IC50 39,73 μg/mL) and β-carotene (50,48% inhibition). In in vitro tests the EXB showed no cytotoxicity in HFF-1 cells. The EXB (50 μg/mL) non-irradiated UVB (0,23 J/cm2) proliferated HFF-1 cells, suggesting a possible photo instability the EXB. At the concentration of 100 μg/mL, reduced in vitro, 79,31% of pro-MMP-9 activity in a dose dependent manner. In vivo tests showed EXB formulation photoprotective efficacy by inhibiting the activity of MMP-2 (73,08%), pro-MMP-2 (67,71%) and pro-MMP-9 (89,86%), decreasing myeloperoxidase activity (71,1%) and preserving collagen an acute exposure to UVB radiation. The formulation containing the extract was shown to have a potential effect photoprotective and anti-aging. Diariamente estamos expostos a inúmeros fatores ambientais, tais como: a radiação ultravioleta e a poluição, que são fontes geradoras de radicais livres. Apesar de ser a maior responsável pelos efeitos biológicos relacionados ao câncer de pele e fotoenvelhecimento, a radiação UVB representa apenas 10% do total da radiação UV capaz de chegar a superfície da Terra. Como medida preventiva, os fotoquimioprotetores são produtos tópicos ou de administração oral incorporados de extratos vegetais ou substâncias naturais isoladas com atividade antioxidante, inibidoras de MMPs e/ou anti-inflamatórias. A Ilex paraguariensis A. St. Hil., conhecida como erva-mate, é uma árvore nativa da América do Sul. Investigações prévias mostraram altos teores de bioativos de interesse cosmético, tais como: ácidos fenólicos, flavonoides e saponinas triterpenoides. O objetivo do estudo foi investigar o potencial fotoprotetor do EXB das folhas de erva-mate in vitro e in vivo. O EXB foi caracterizado por meio das dosagens dos teores de polifenóis, flavonoides e taninos por métodos espectrofotométricos; identificando e quantificando os ácidos clorogênico e cafeico por LC/MS e CLAE; avaliando a atividade antioxidante pelos métodos DPPH e β-caroteno. A citotoxicidade / fotoestabilidade e atividade inibitória frente à MMP-2 e -9, em diferentes concentrações, foram analisadas in vitro por medida da viabilidade celular em culturas de células de fibroblastos da linhagem HFF-1 e zimografia de substrato, respectivamente. A eficácia fotoprotetora da formulação contendo o extrato foi testada in vivo por medida da atividade de metaloproteinases, mieloperoxidase e degradação do colágeno, usando camundongos heterogênicos expostos ao UVB (0,23 J/cm2). Os teores de flavonoides, polifenois e taninos, respectivamente, foram 200 mg EC/g; 265,4 mg EAG/g e 158,7 mg EC/g. Foram quantificados os teores de ácido clorogênico (19,26 mg/g) e ácido cafeico (4,27 mg/g) por CLAE. O potencial antioxidante foi analisado pelos métodos DPPH (IC50 39,73 μg/mL) e β-caroteno (50,48% de inibição). Nos testes in vitro o EXB não apresentou citotoxicidade nas células HFF-1. O EXB (50 μg/mL) não irradiado ao UVB (0,23 J/cm2) proliferou células HFF-1, sugerindo uma possível fotoinstabilidade do EXB. Os géis incubados com EXB (100 μg/mL), inibiu em 79,31% da atividade da pro-MMP-9, de forma dose dependente. Nos testes in vivo a formulação EXB mostrou eficácia fotoprotetora, inibindo a atividade das MMP-2 (73,08%), pro-MMP-2 (67,71%) e pro-MMP-9 (89,86%), diminuindo a atividade de mieloperoxidase (71,1%) e preservando colágeno diante de uma exposição aguda à radiação UVB. A formulação contendo o extrato apresentou um potencial efeito fotoprotetor e antienvelhecimento.
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- 2016
50. Glechon spathulata Benth. (Lamiaceae) phenolic compounds and biological activity
- Author
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Ugalde, Gustavo Andrade, Manfron, Melânia Palermo, Canto, Gizele Scotti do, and Souto, Ricardo Bizogne
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Glechon spathulata ,Lamiaceae ,CIENCIAS BIOLOGICAS::FARMACOLOGIA [CNPQ] ,Polifenois ,Polyphenols ,ORAC ,UHPLC-ESI-MS/MS ,DPPH - Abstract
Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul, FAPERGS Glechon spathulata Bentham, belonging to the Lamiaceae family, is known as manjerona-do-campo, has its leaves used popularly as culinary flavoring, diaphoretic, stomachic in dyspepsia, antiseptic and expectorant in catarrhal respiratory diseases, colds, bronchitis and laryngitis, between others. Similarly to G. spathulata a range of plant species of the Brazilian flora representatives are used to combat various diseases of the most popular medicine without prior knowledge of the pharmacology or the inherent toxicity of the prepared plants. Therefore, for greater therapeutic efficacy, it is necessary prior knowledge of the chemical profile and evidence of biological activity of the plant. The objective of this study was to develop a phytochemical characterizationof the crude extract (CE) hydroethanolic 70% from the aerial parts (leaves and stems) of G. spathulata from spectrophotometric methods and ultra performance liquid chromatography coupled to mass detector with electrospray ionization interface (UHPLC-ESI-MS/MS), and evaluate their antimicrobial and antioxidant activities. The CE showed adequate antioxidant activity by the two methods employed, getting to the method of inhibition of DPPH radical IC50 of 48.29 ± 1.21 mg/g for the ORAC method the value of 10.51 ± 0.78 μmol Trolox/g, higher than the standard Trolox tested at the same concentration. The CE showed high levels of total polyphenols (186 ± 4.00 mg GAE/g) and total flavonoid (59.4 ± 0.58 mg QE/g) when compared to the species of the family. Added to this, 13 phenolic compounds divided into five major classes (derived from cinnamic acid, derived from benzoic acid, derivatives of caffeic acid, flavonoids and phenolic terpenes) were identified and quantified by UHPLC-ESI-MS/MS, highlighting the rosmarinic acid, which have a concentration of 34.458% in the CE. The gram-negative bacteria tested in the study were sensitive to G. spathulata CE (Escherichia coli ATCC 35218 - 200 μg/mL; Escherichia coli ATCC 25922 - 800μg/mL; Salmonella spp. ATCC 5217 – 200 μg/mL). The results of this study, together indicate that this plant has antioxidant potential and may be a promising source of natural antioxidants and derivatives with antimicrobial potential. Glechon spathulata Bentham, pertencente à família Lamiaceae, é conhecida como manjerona-do-campo, tem suas folhas empregadas popularmente como condimento culinário, diaforética, estomáquico em dispepsias, antisséptico e expectorante em afecções catarrais das vias respiratórias, resfriados, bronquites e laringites, entre outros. Da mesma forma que a G. spathulata, uma gama de espécies vegetais representantes da flora brasileira são utilizadas no combate das mais diversas enfermidades na medicina popular, sem conhecimentos prévios sobre a farmacologia nem a toxicidade inerentes aos preparados das plantas. Logo, para uma maior eficácia terapêutica, faz-se necessário o conhecimento prévio do perfil químico e da comprovação das atividades biológicas da planta. O objetivo deste estudo foi o desenvolvimento de uma caracterização fitoquímica do extrato bruto (EB) hidroetanólico a 70% das partes aéreas (caules e folhas) de G. spathulata a partir de métodos espectrofotométricos e de cromatografia líquida de ultra desempenho acoplada a detector de massas com interface de ionização por electrospray (CLUE-ESI-MS/MS) e avaliar suas atividades antimicrobiana e antioxidante. O EB apresentou adequada atividade antioxidante pelos dois métodos empregados, obtendo para o método de inibição do radical DPPH CI50 de 48,29 ± 1,21 μg/g e para o método ORAC o valor de 10,51 ± 0,78 μmol Trolox/g, superior ao padrão Trolox testado na mesma concentração. O EB apresentou elevado teor de polifenois totais (186 ± 4.00 mg GAE/g) e flavonoides totais (59.4 ± 0.58 mg QE/g) quando comparado à espécies da família. Somado a isso, 13 compostos fenólicos divididos em 5 classes principais (derivados do ácido cinâmico, derivados do ácido benzoico, derivados do ácido cafeico, flavonoides e terpenos fenólicos) foram identificados e quantificados por UHPLC-ESI-MS/MS, com destaque para o ácido rosmarínico, que apresentou concentração de 34,458% no EB. Apenas as bactérias gram-negativas testadas no estudo foram sensíveis ao EB de G. spathulata (Escherichia coli ATCC 35218 - 200 μg/mL; Escherichia coli ATCC 25922 - 800 μg/mL; Salmonella spp. ATCC 5217 - 200 μg/mL). Os resultados obtidos neste estudo, somados, indicam que esta planta possui potencial antioxidante e pode ser uma promissora fonte de antioxidantes naturais e de derivados com potencial antimicrobiano.
- Published
- 2016
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