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Medicinal Plant Communications
Various mechanisms are involved in the formation and growth of tumors, among which is the formation of new blood vessels, angiogenesis. The present work investigated the antiangiogenesis activity of dichloromethane extracts from the leaves and branches of Duroia macrophylla Huber (Rubiaceae). Which is an arboreal and fruit species from the Amazon Rainforest and for which triterpenes and indole alkaloids have alreadybeen isolated. The antiangiogenic capacity of the extracts was evaluated using the Chorioallantoic Membrane Assay method in chicken eggs. The results show that the extracts inhibited the formation of new vessels in a range of 80 to 50% in the doses of 1000, 500 and 100 μg/mL. These results indicate the great antiangiogenic potential of this species.
Journal of Pharmacy & Pharmacognosy Research
Phytochemical prospection and biological activity of Duroia macrophylla (Rubiaceae)2014 •
Context: Duroia macrophylla (Rubiaceae) is endemic from the Amazon Rainforest. Aims: To perform phytochemical profile of Duroia macrophylla extracts and to evaluate them as antioxidant, insecticidal and cytotoxic. Methods: Dichloromethane and methanol extracts of leaves and branches (collected three times) were subjected to phytochemical screening by comparative thin layer chromatography and NMR analyses. The extracts were assayed to antioxidant (DPPH and Fe-phenanthroline, at 10 μg/mL), insecticidal on Sitophilus zeamais (by ingestion of stored grains and contact, both at 10 mg/mL) and toxic activities on Artemia salina (1000 μg/mL). Results: There were found evidences of terpenes, phenolic substances (phenols and flavonoids) and alkaloids, with differences between the vegetal part, collection period and solvent used. Antioxidant evaluations showed three of twelve were active and two were considered moderately active, with a relationship dependently of concentration. All methanol e...
Abstract: Context: Duroia macrophylla (Rubiaceae) is endemic from the Amazon Rainforest. Aims: To perform phytochemical profile of Duroia macrophylla extracts and to evaluate them as antioxidant, insecticidal and cytotoxic. Methods: Dichloromethane and methanol extracts of leaves and branches (collected three times) were subjected to phytochemical screening by comparative thin layer chromatography and NMR analyses. The extracts were assayed to antioxidant (DPPH and Fe-phenanthroline, at 10 μg/mL), insecticidal on Sitophilus zeamais (by ingestion of stored grains and contact, both at 10 mg/mL) and toxic activities on Artemia salina (1000 μg/mL). Results: There were found evidences of terpenes, phenolic substances (phenols and flavonoids) and alkaloids, with differences between the vegetal part, collection period and solvent used. Antioxidant evaluations showed three of twelve were active and two were considered moderately active, with a relationship dependently of concentration. All methanol extracts showed the presence of phenolic substances (phenols and flavonoids) but one showed only phenols. For insecticidal activity, there were three most active extracts, two of which showed only presence of terpenes and the other, besides terpenes, phenolic substances (phenols and flavonoids). For Artemia salina toxicity assay, the five most active were all from the 2nd and 3rd collections. Conclusions: The active extracts of D. macrophylla in each test were different. Three methanol extracts showed antioxidant activity; three extracts showed insecticidal activity and the presence of terpenic substances and five extracts presented cytotoxic activity, but it was not possible to correlate it with any specific secondary metabolite. ********************************************************* Resumen: Contexto: Duroia macrophylla (Rubiaceae) es endémica de la selva amazónica. Objetivos: Obtener el perfil fitoquímico de los extractos de Duroia macrophylla y evaluarlos frente a las actividades antioxidantes, insecticida y citotóxica. Métodos: Extractos diclorometánicos y metanólicos de hojas y ramas (colectados tres veces) fueron analizados por cromatografía en capa fina comparativa y RMN. Los extractos fueron ensayados para determinar las actividades antioxidante (DPPH y Fe-fenantrolina, en 10 μg/mL), insecticida sobre Sitophilus zeamais (por ingestión de granos almacenados y por contacto, ambos en 10 mg/mL) y tóxica sobre Artemia salina (1000 μg/mL). Resultados: Se encontraron evidencias de terpenos, sustancias fenólicas (fenoles y flavonoides) y alcaloides, con diferencias entre las partes vegetales, periodo de colecta y disolvente usado. Las evaluaciones de la actividad antioxidante mostraron que tres de doce extractos fueron activos y dos fueron considerados moderadamente activos, de un modo dependiente de la concentración. Todos los extractos metanólicos mostraron la presencia de sustancias fenólicas (fenoles y flavonoides) pero uno sólo fenoles. Para la actividad insecticida, de los tres más activos, dos presentaron terpenos y el otro, además de terpenos, sustancias fenólicas (fenoles y flavonoides). Para la toxicidad sobre Artemia salina, los cinco más activos fueron todos de las 2ª y 3ª colectas. Conclusiones: Los extractos activos de D. macrophylla en cada ensayo fueron diferentes. Tres de los extractos metanólicos mostraron actividad antioxidante; en los tres extractos que presentaron actividad insecticida se encontraron terpenos y cinco extractos presentaron actividad citotóxica, pero no fue posible correlacionarla con ningún metabolito secundario específico.
Context: Duroia macrophylla (Rubiaceae) is endemic from the Amazon Rainforest. Aims: To perform phytochemical profile of Duroia macrophylla extracts and to evaluate them as antioxidant, insecticidal and cytotoxic. Methods: Dichloromethane and methanol extracts of leaves and branches (collected three times) were subjected to phytochemical screening by comparative thin layer chromatography and NMR analyses. The extracts were assayed to antioxidant (DPPH and Fe-phenanthroline, at 10 μg/mL), insecticidal on Sitophilus zeamais (by ingestion of stored grains and contact, both at 10 mg/mL) and toxic activities on Artemia salina (1000 μg/mL). Results: There were found evidences of terpenes, phenolic substances (phenols and flavonoids) and alkaloids, with differences between the vegetal part, collection period and solvent used. Antioxidant evaluations showed three of twelve were active and two were considered moderately active, with a relationship dependently of concentration. All methanol extracts showed the presence of phenolic substances (phenols and flavonoids) but one showed only phenols. For insecticidal activity, there were three most active extracts, two of which showed only presence of terpenes and the other, besides terpenes, phenolic substances (phenols and flavonoids). For Artemia salina toxicity assay, the five most active were all from the 2nd and 3rd collections. Conclusions: The active extracts of D. macrophylla in each test were different. Three methanol extracts showed antioxidant activity; three extracts showed insecticidal activity and the presence of terpenic substances and five extracts presented cytotoxic activity, but it was not possible to correlate it with any specific secondary metabolite.
Ciencia e Investigación
EFECTO ANTIOXIDANTE Y ANTIFOTOENVEJECIMIENTO DE EXTRACTOS DE LA MACROALGA DEL LITORAL PERUANO DE Macrocystis integrifolia BORY Y ELABORACIÓN DE UNA FORMA DERMOCOSMÉTICA2014 •
El objetivo del estudio fue evaluar el efecto antioxidante y antifotoenvejecimiento de extractos de la alga parda Macrocystis integrifolia Bory y elaborar una forma dermocosmética. Obtenidos los extractos, se diseñó una forma dermocosmética en concentraciones de 1, 3 y 5%, elaboradas sobre una base de manteca de cerdo con incorporación de cera de abejas y aceite de sésamo a un pH de 6,5. La actividad antioxidante in vitro se determinó por lo métodos CDP y ABTS. La evaluación del efecto antifotoenvejecimiento in vivo se realizó empleando 25 ratones albinos hembra de la especie Mus musculus, cepa Bald/C53, que fueron distribuidos en cinco grupos de cinco ratones cada uno; a excepción del grupo que sirvió de blanco, el grupo control y los grupos de intervención fueron depilados en el lomo y se sometieron a la irradiación UVB durante 7 días, mañana y noche. El ensayo in vitro de la actividad antioxidante mostró que entre los extractos de estípite, fronda y bulbo de esta alga, existen di...
Biotecnología en el Sector Agropecuario y Agroindustrial
DESARROLLO DE UNA BEBIDA LÁCTEA CON EXTRACTOS DE CURUBA (Passiflora mollissima Bailey) COMO ANTIOXIDANTE NATURALLa curuba es una fruta tropical, nutritiva y con un alto potencial antioxidante pero poco reconocida. El presente estudio investigó el efecto de la adición de extractos de curuba en concentraciones de 0,4%, 0,6% y 0,8% p/p con relación a un blanco (0%), sobre la capacidad antioxidante y la estabilidad oxidativa de una bebida fermentada con lactosuero, durante el almacenamiento. Se determinaron las características fisicoquímicas de las bebidas, el contenido de fenoles totales, la capacidad antioxidante por los métodos DPPH (2,2-difenil-1-picrilhidracilo) y ORAC (Capacidad de Absorción de Radicales de Oxígeno); se evaluó la oxidación lipídica por el método de TBARS (Sustancias Reactivas al Ácido Tiobarbitúrico) y se determinaron los cambios organolépticos mediante una prueba sensorial triangular. Los resultados obtenidos en el tiempo, variaron en los rangos: 15,46 - 302,96 mg ác. gálico/L para fenoles totales; 183,23 - 1.376,46 µM Tx en DPPH; 704,88 - 4.910,32 µM Tx en ORAC-H; 258,50 ...
2011 •
Objetivos: Evaluar la actividad antiinflamatoria y antioxidante de la fracción flavónica extraída de las hojas de Jungia rugosa Less. Diseño: Experimental. Lugar: Facultades de Medicina y Farmacia y Bioquímica, Universidad Nacional Mayor de San Marcos, Lima, Perú. Material biológico: Fracción flavónica extraído de las hojas de Jungia rugosa Less y ratas. Intervenciones: Las hojas de Jungia rugosa Less fueron recolectadas en el cerro Condorcunca, a 3 500 msnm, distrito de Quinua, departamento de Ayacucho. La actividad antiinflamatoria fue evaluada in vivo usando el método de edema plantar inducido por carragenina y en sangre se cuantificó los niveles séricos de interleuquinas 1, 6 y proteína C reactiva (PCR); también, se indujo el granuloma, según Sedwicks, evaluándose por histopatología. La actividad antioxidante fue evaluada in vitro mediante la neutralización del radical 1,1-difenil-2-picril-hidrazilo (DPPH). Principales medidas de resultados: Actividad antiinflamatoria y antioxid...
SABER. Revista Multidisciplinaria del Consejo de Investigación de la Universidad de Oriente
TAMIZAJE FITOQUÍMICO Y ACTIVIDAD ANTIBACTERIANA PRELIMINAR DE LOS EXTRACTOS DE LA MACROALGA Laurencia dendroidea, J. Agardh, 1841 (RHODOMELACEAE: RHODOPHYTA)2015 •
Introduction: Merremia umbellata is widely used in popular medicine to treat several diseases, including those that implicate inflammation. Objectives: To assess the anti-inflammatory and antioxidant effect of the total ethanolic extract obtained from the leaf of Merremia umbellata. Methods: The vegetable material was extracted by maceration with ethanol. Anti-inflammatory activity was evaluated with the in vivo murino model of auricular edema induced by 12-O-tetradecanoylphorbol-13-acetate (TPA), determining the activity of the myeloperoxidase enzyme (MPO). In addition, the inhibition of the production of nitric oxide (NO) in RAW 264.7 machrophages stimulated with lipopolysaccharides (LPS) was determined. Whereas the antioxidant activity was determined with the application of spectrophotometric methods, which involve the scavenge of free radicals DPPH (2,2-diphenyl-1-picrylhydrazyl), ATBS (2,2’-azinobis-3-ethylbenzothiazoline-6-sulfonic acid), NO and H2O2 (Hydrogen Peroxide). Results: Merremia umbellata extract decreased the edema and the activity of MPO enzyme in inflamed ears of mice with TPA, just like the production of NO in activated macrophages. And besides, it presented significant free radicals scavenging activities DPPH, ABTS and H2O2. Conclusion: The anti-inflammatory and antioxidant activity in the total ethanolic extract of Merremia umbellata was demonstrated. Rev.Cienc.Biomed. 2013;4(1):13-19
Anais da Academia Brasileira de Ciências
Anti-inflammatory, antinociceptive, and antipyretic effects of methanol extract of Cariniana rubra stem bark in animal modelsCariniana rubra Miers (Lecythidaceae), popularly known as "jequitibá-vermelho'', is a large Brazilian tree whose bark is used in infusion and decoction for the treatment of inflammatory conditions. This study aims to assess the anti-inflammatory, antinociceptive, and antipyretic effects of Cariniana rubra methanolic stem bark extract (EM Cr) using experimental animals. Anti-inflammatory activity of EM Cr was tested on carrageenan and dextran-induced rat paw edema, carrageenan-induced pleurisy in rats and acetic acid-increase vascular permeability in mice. Antinociceptive and antipyretic activities were evaluated using acetic acid-induced writhing, formalin and hot-plate tests in mice, as well as brewer's yeast-induced pyrexia in rats. The extract inhibitied carrageenan and dextran-induced edema, reduced exudate volume and leukocyte migration on the carrageenan-induced pleurisy and on the vascular permeability increase induced by acetic acid. The EM Cr inhibited noci...
Anales de la Facultad de Medicina
Efecto antiinflamatorio y antioxidante de los flavonoides de las hojas de Jungia rugosa Less (matico de puna) en un modelo experimental en ratas2013 •
Objetivos: Evaluar la actividad antiinflamatoria y antioxidante de la fracción flavónica extraída de las hojas de Jungia rugosa Less. Diseño: Experimental. Lugar: Facultades de Medicina y Farmacia y Bioquímica, Universidad Nacional Mayor de San Marcos, Lima, Perú. Material biológico: Fracción flavónica extraído de las hojas de Jungia rugosa Less y ratas. Intervenciones: Las hojas de Jungia rugosa Less fueron recolectadas en el cerro Condorcunca, a 3 500 msnm, distrito de Quinua, departamento de Ayacucho. La actividad antiinflamatoria fue evaluada in vivo usando el método de edema plantar inducido por carragenina y en sangre se cuantificó los niveles séricos de interleuquinas 1, 6 y proteína C reactiva (PCR); también, se indujo el granuloma, según Sedwicks, evaluándose por histopatología. La actividad antioxidante fue evaluada in vitro mediante la neutralización del radical 1,1-difenil-2-picril-hidrazilo (DPPH). Principales medidas de resultados: Actividad antiinflamatoria y antioxid...
Journal of Physics A: Mathematical and Theoretical
Comment on ‘Analytical results for a Bessel function times Legendre polynomials class integrals’2007 •
2014 •
2019 •
World Journal of Microbiology and Biotechnology
Rapid screening of Aspergillus terreus mutants for overproduction of lovastatin2005 •
BMC Medical Genetics
Novel mutations in natriuretic peptide receptor-2 gene underlie acromesomelic dysplasia, type maroteaux2012 •
2021 •
2021 •
Journal of the American College of Cardiology
Percutaneous Intervention or Coronary Artery Bypass Grafting for Left Main Stem Coronary Artery Disease? A Meta-Analysis2020 •
Discrete Dynamics in Nature and Society
Optimization of Meat and Poultry Farm Inventory Stock Using Data Analytics for Green Supply Chain Network2018 •
Oriental Journal of Chemistry
Antibacterial Assay and Alkaloid Lombine Distribution Study of Voacanga foetida (B.I)Rolfe from Lombok Island2019 •
Canadian Journal of Cardiology
Contemporary Incidence of Mural Thrombus Following Acute Anterior Stemi Complicated by New Antero/Apical Wall Motion Abnormalities: Insights from the Multicenter Magic Registry2017 •
Veterinary Research Communications
Apoptosis and Expression of Related Proteins in Mammary Gland of Heifers during Early Lactation2003 •
American Journal of Primatology
Acute changes in social composition and agonistic behavior in male vervet monkeys (Cercopithecus aethiops sabaeus)1992 •
Chemometrics and Intelligent Laboratory Systems
Kernel-based mapping of reliability in predictions for consensus modelling2024 •
2020 •
International Journal For Multidisciplinary Research
Digitalisation an Indian Government Initiative in AgricultureBulletin De L Academie Veterinaire De France
L'arthrite encéphalite caprine (A.E.C.). Etude sérologique, anatomo-clinique. Procédures d’assainissement1987 •
Journal of Perspectives in Applied Academic Practice
Book Review - BITE: Recipes for Remarkable Research2014 •
A estandarización das linguas da Península Ibérica: procesos, problemas e novos horizontes.
LA DEFINICIÓ DE ESTÀNDARD SEGONS LA LEXICOGRAFIA I LA TERMINOGRAFIA OFICIALS DEL CATALÀ I L'ESPANYOL: CONTRIBUCIÓ A L'ESTANDARDOLOGIA COMPARADA2024 •