Introducción. Los cálices de la uchuva, Physalis peruviana, son ampliamente utilizados en la medicina popular por sus propiedades como anticancerígeno, antimicobacterial, antipirético, diurético, immunomodulador y antinflamatorio. Objetivo. Evaluar el efecto antinflamatorio de extractos y fracciones obtenidas de los cálices de Physalis peruviana en un modelo de inflamación aguda en ratón, procurando identificar las fracciones responsables de dicha actividad. Materiales y métodos. Los cálices de Physalis peruviana fueron extraídos por percolación con solventes orgánicos. La fracción primaria hidroalcohólica se purificó mediante cromatografía en columna. La actividad antinflamatoria de los extractos y fracciones se evaluó utilizando el modelo murino de edema auricular inducido por 13-acetato de 12-tetradecanoilforbol. Resultados. Se obtuvieron 38 fracciones secundarias en la cromatografía en columna de la fracción primaria hidroalcohólica, de las cuales seis fueron evaluadas en el modelo inflamatorio, mostrando actividad significativa (p<0,05). La fracción mayoritaria identificada como Pp-D 28 -LF presentó una respuesta dosis dependiente con significativa inhibición del edema en dosis superiores a 250 µg/oreja (p<0,05). Conclusión. Este estudio confirma la actividad antinflamatoria atribuida a los cálices de Physalis peruviana y también valida su uso en la medicina popular. Se identificaron las principales fracciones responsables de la actividad antinflamatoria, las cuales parecen ser promisorias para el desarrollo de fitopreparados. Se requieren estudios posteriores para aislar e identificar los compuestos responsables de la actividad y también para investigar el mecanismo involucrado en el efecto antinflamatorio observado.Palabras clave: Solanaceae, Physalis, inflamación, agentes antinflamatorios, plantas medicinales. Antiinflammatory activity of extracts and fractions obtained from Physalis peruviana L. calycesIntroduction. Cape gooseberry calyces (Physalis peruviana) have been used in folk medicine for their medicinal properties including anticancer, antimycobacterial, antipyretic, diuretic, immunomodulatory and antiinflammatory properties. Objective. The antiinflammatory effect was evaluated for extracts and fractions obtained from Physalis peruviana calyces in a mice model of acute inflammation. The fractions responsible for antiinflammatory activity were extracted for possible identification. Materials and Methods. The Physalis peruviana calyces were extracted by percolation with organic solvents. The primary hydroalcoholic fraction was purified by column chromatography. The antiinflammatory effect of extracts and fractions was evaluated using the 12-Otetradecanoylphorbol-13-acetate-induced mouse model of ear edema. Results. Thirty-eight secondary fractions were obtained by column chromatography of primary hydroalcoholic fraction. Six fractions, evaluated in 12-O-tetradecanoylphorbol-13-acetateinduced inflammation assay, showed significant antiinflammatory activity (p<0.05). The major
Rapanone (2,5-dihydroxy-3-tridecyl-1,4-benzoquinone), a natural compound isolated from Myrsine guianensis growing in the Andean highlands of Colombia, was studied in different in vitro and in vivo models as a potential antioxidant and anti-inflammatory drug. Rapanone showed a mild anti-lipoperoxidative profile in rat liver microsomes and inhibited potently degranulation (IC(50) of 9.8 microM) and superoxide chemiluminescence (IC(50) of 3.0 microM) in human neutrophils. In addition, rapanone is a selective and potent human synovial PLA(2) inhibitor (IC(50) of 2.6 microM). In vivo experiments using the carrageenan paw oedema and the zymosan air pouch model in mice as well as the adjuvant arthritis model in rats have proved that rapanone is very efficient in controlling the inflammatory process by different administration routes.
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