Análise fitossociológica de um fragmento de floresta estacional decidual no município de Jaguari, RS

Hack, Cristiano; Longhi, Solon Jonas; Boligon, Alexandra Augusti; Murari, Augusto Bolson; Pauleski, Dalva T.

doi:10.1590/s0103-84782005000500015

Cited by 39 publications

(29 citation statements)

References 6 publications

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“…Casearia Jacquin represents one of the largest genus in the Salicaceae family, with 180 species distributed across the Neotropics, Africa, Malaysia, Australia, and Pacific Islands . Casearia species are known by the phytotherapeutic potential used in folk medicine once C. elliptica has been described for the treating of malaria and fever, C. esculenta for the treating of diabetes mellitus and C. sylvetris for the treatment of a variety of diseases . Regarding the phytochemical aspects, the Casearia genus has been described to produce casearins, a clerodane‐type diterpene derivative which displayed in vitro cytotoxic effects, including the apoptosis induction of tumor cells and antiproliferative activity .…”

Section: Introductionmentioning

confidence: 99%

Antileishmanial Activity and Immunomodulatory Effects of Tricin Isolated from Leaves of Casearia arborea (Salicaceae)

Santos

Yamamoto

Passero

et al. 2017

Chemistry & Biodiversity

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Bioactivity-guided fractionation of antileishmanial active extract from leaves of Casearia arborea led to isolation of three metabolites: tricin (1), 1',6'-di-O-β-d-vanilloyl glucopyranoside (2) and vanillic acid (3). Compound 1 demonstrated the highest activity against the intracellular amastigotes of Leishmania infantum, with an IC value of 56 μm. Tricin (1) demonstrated selectivity in mammalian cells (SI > 7) and elicited immunomodulatory effect on host cells. The present work suggests that tricin modulated the respiratory burst of macrophages to a leishmanicidal state, contributing to the parasite elimination. Therefore, the natural compound tricin could be further explored in drug design studies for leishmaniasis treatment.

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Section: Introductionmentioning

confidence: 99%

Antileishmanial Activity and Immunomodulatory Effects of Tricin Isolated from Leaves of Casearia arborea (Salicaceae)

Santos

Yamamoto

Passero

et al. 2017

Chemistry & Biodiversity

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“…Litter production provides important information on ecosystem functioning; in fact, it relates nutrient cycling, decomposition dynamics and soil organic carbon incorporation according to species diversity and structural parameters of vegetation to tree size and abundance in a forest community (Hack et al 2005;Gilliam 2007;Aragão et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Effects of forest structure on litter production, soil chemical composition and litter-soil interactions

et al. 2016

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Litter production in forest ecosystems is a major indicator of primary productivity because litter helps incorporate carbon and nutrients from plants into the soil and is directly involved in plant-soil interactions. To our knowledge, few studies have investigated the relationship between species diversity and ecosystem processes in subtropical forest fragments. In this work, we determined forest structural parameters and assessed seasonal leaf litter input, leaf decomposition rate, litter quality and soil characteristics in two subtropical Atlantic Forest fragments. Litter production was greater in the native fragment with the higher species diversity (FN1). Th e two native fragments (FN1 and FN2) diff ered in basal area, volume and dominance in the upper stratum, which were positively correlated with litter production in FN1 but negatively correlated in FN2. Soil in FN1 exhibited higher contents of organic C, available phosphorus and exchangeable calcium, and the leaf litter had a higher C:N ratio. Although these results are consistent with a plant-soil feedback, which suggests the presence of a complementary eff ect, the dominance of certain families in subtropical forest fragments results in a selection eff ect on litter productivity and decomposition.

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“…Casearia sylvestris Sw (Flacourtiaceae) is a plant popularly known as "guaçatonga", "chá-de-bugre" or "cafezinho-domato" and it is geographically distributed throughout Latin America (Lorenzi & Matos, 2002), also occurs in all extension of Brazilian territory (Felfili et al, 2002;Barbosa, et al, 2005;Hack, et al, 2005). The Karajá Indians from Brazilian prepare a maceration of this plant bark to treat diarrhoea and the Shipibo-Conibo Indians of Peru use a decoction of the bark for diarrhea, chest colds and flu.…”

Section: Introductionmentioning

confidence: 99%

Cytotoxic evaluation of essential oil from Casearia sylvestris Sw on human cancer cells and erythrocytes

Silva¹,

Chaar

Figueiredo

et al. 2008

Acta Amaz.

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Casearia sylvestris (Flacourtiaceae) is a plant popularly known as "guaçatonga" and it is used by indigenous population from South America (Brazil, Peru and Bolivia) in the treatment of several diseases, including cancer. Cytotoxic studies showed that it presents an interesting antitumoral potential due to the presence of casearins and the essential oil showed a high percentage of potent cytotoxic sesquiterpenes (β-caryophyllene and α-humulene). In this work, we verified that the essential oil of C. sylvestris presents a good selective cytotoxicity against HeLa, A-549 and HT-29 tumor cells (CD 50 63.3, 60.7 and 90.6 µg.ml ). The oil causes hemolysis in seven different kinds of erythrocytes, indicating that C. sylvestris must be used carefully. Besides, standard of β-caryophyllene and α-humulene were also tested and they showed similar cytotoxicity to the cytotoxicity presented in the oil, indicating that they might be responsible for the toxic effects that were observed in this study.KEYWORDS: Cytotoxicity, Casearia sylvestris, Erythrocytes, Essential oil, MTT, Sesquiterpenes. Avaliação citotóxica do óleo essencial de Casearia sylvestris Sw sobre células tumorais humanas e eritrócitos RESUMOA Casearia sylvestris (Flacourtiaceae) é uma planta popularmente conhecida como "guaçatonga" e é usada por povos indígenas da América do sul (Brasil, Peru e Bolivia) no tratamento de muitas doenças, incluindo câncer. Estudos citotóxicos mostraram que esta planta apresenta um possível e interessante potencial antitumoral devido à presença de moléculas chamadas casearinas. Além disso, a composição do óleo essencial mostrou uma alta concentração de sesquiterpenos de alto potencial citotóxico. Neste trabalho, nós verificamos que o óleo essencial da C. sylvestris apresentou uma boa citotoxicidade seletiva contra as linhagens de células tumorais HeLa, A-549 and HT-29 (CD 50 63,3, 60,7 e 90,6 µg.ml ). Além disso, o óleo causou hemólise em sete diferentes tipos de eritrócitos, indicando que a C. sylvestris precisa ser usada com cuidado. Também foram testados padrões de β-cariofileno e α-humuleno que mostraram citotoxicidade similar àquelas apresentadas pelo óleo, indicando que estes compostos podem ser os responsáveis pelos efeitos tóxicos que foram observados neste estudo.

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Análise fitossociológica de um fragmento de floresta estacional decidual no município de Jaguari, RS

Cited by 39 publications

References 6 publications

Antileishmanial Activity and Immunomodulatory Effects of Tricin Isolated from Leaves of Casearia arborea (Salicaceae)

Antileishmanial Activity and Immunomodulatory Effects of Tricin Isolated from Leaves of Casearia arborea (Salicaceae)

Effects of forest structure on litter production, soil chemical composition and litter-soil interactions

Cytotoxic evaluation of essential oil from Casearia sylvestris Sw on human cancer cells and erythrocytes

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