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Nota sobre a ocorrência de pétalas reduzidas em espécies de Polygala L. subgênero Hebeclada (Chodat) Blake (Polygalaceae) da Regi?o Sul do Brasil
Lüdtke, Raquel;Aguiar, Ana Cristina Andrade de;
Biota Neotropica , 2008, DOI: 10.1590/S1676-06032008000100028
Abstract: the number of petals in the flowers is a taxonomic character used in the circumscription of the subgenera of polygala. until now, the corolla of the species of subgenus hebeclada was described having tree petals, one inferior and central called carina and two lateral adnated to the staminal sheath. among the 12 subgenera of polygala, the occurrence of trimerous corolla was only known in subgenera polygala and hebeclada. this paper presents the discovery of pentamerous corolla in species of polygala subgenus hebeclada, presenting photos and additional comments about this reduced petals unknown for the subgenus until this moment.
O gênero Polygala L. (Polygalaceae) na regi?o Sul do Brasil
Lüdtke, Raquel;Souza-Chies, Tatiana Teixeira de;Miotto, Silvia Teresinha Sfoggia;
Hoehnea , 2013, DOI: 10.1590/S2236-89062013000100001
Abstract: in southern brazil, the polygalaceae family is represented by five genera: acanthocladus, bredemeyera, monnina, polygala, and securidaca. the genus polygala is the largest of the polygalaceae family, with approximately 725 species widely distributed in the world, in all types of environment. approximately 140 taxa of polygala are known in the brazilian flora. the survey recorded 39 species of polygala to southern brazil, representing the subgenera hebeclada, ligustrina and polygala, the last one with 31 species. full descriptions, illustrations, analytical keys, data on habitat, geographic distribution, and ecological observations are provided.
Artefatos cumarínicos isolados de Polygala paniculata L. (Polygalaceae)
Pizzolatti, M. G;Cristiano, R.;Monache, F. D.;Branco, A.;
Revista Brasileira de Farmacognosia , 2002, DOI: 10.1590/S0102-695X2002000100003
Abstract: fractionation of a chloroform extract of polygala paniculata (polygalaceae) on silica gel column chromatography yielded 7-methoxy-8-(1',2'-epoxy-3'-methyl-3'-butenyl)-coumarin (1) and two coumarinic artifacts (2a-2b). the reaction of 1 with etoh/sio2 at room temperature for 24 hours yielded 7-methoxy-8-(1'-hydroxy-2'-ethoxy-3'-methyl-3'-butenyl)-coumarin (2a) and 7-methoxy-8-(1'-ethoxy-2'-hydroxy-3'-methyl-3'-butenyl)-coumarin (2b). the structures have been determined by spectral data, including 2d nmr experiments.
Flora da Paraíba, Brasil: Polygala L. (Polygalaceae)
Coelho, Victor Pe?anha de Miranda;Agra, Maria de Fátima;Baracho, George Sidney;
Acta Botanica Brasilica , 2008, DOI: 10.1590/S0102-33062008000100022
Abstract: a taxonomic treatment of the genus polygala l. was carried out as part of the project "flora da paraíba". botanical identifications and illustrations were based on morphological studies supported by the literature and herbaria revisions, aided by field observations. eleven species of polygala were found in the state of paraíba: polygala boliviensis a.w. benn., p. cyparissias a. st.-hil. & moq., p. galioides poir., p. glochidiata kunth, p. leptocaulis torr. & a.gray, p. longicaulis kunth, p. martiana a.w. benn., p. paniculata l., p. sedoides a.w. benn., p. spectabilis dc. and p. violacea aubl. apart from p. cyparissias, p. galioides, p. glochidiata, p. spectabilis and p. violacea the other species are newly reported for the state of paraíba.
Atividade analgésica e antiedematogênica de Polygala paniculata L. (Polygalaceae) selvagem e obtida por micropropaga??o
Nogueira, F.L.P.;Fernandes, S.B.O.;Reis, G.M.;Matheus, M.E.;Fernandes, P.D.;Lage, C.L.S.;Menezes, F.S.;
Revista Brasileira de Farmacognosia , 2005, DOI: 10.1590/S0102-695X2005000400009
Abstract: the ethanolic extracts of polygala paniculata l. (polygalaceae), wich is a herbaceous plant widely distributed all over brazil, were tested for their analgesic effects using hot plate, tail flick and formalin test models, and for their antiedematogenic effects using croton oil induced ear oedema. the ethanolic extracts obtained from wild and micropropagated plants produced analgesic effects against thermal and chemical induced pain. the highest results were observed at the dose of 400 mg/kg. the inhibition of ear oedema in mice was also observed after treatment with ethanolic extract of polygala paniculata. the effects produced by micropropagated plants were lower than wild plants, whereas both had produced significant effects. these results suggest that the ethanolic extracts from wild and micropropagated polygala paniculata possess analgesic and antiedematogenic effects.
Duas novas espécies de Polygala (Polygalaceae) da regi?o da Chapada dos Veadeiros, GO, Brasil
Pastore, José Floriano Barêa;Marques, Maria do Carmo Mendes;
Acta Botanica Brasilica , 2009, DOI: 10.1590/S0102-33062009000200016
Abstract: two new species of polygala l. subgenus polygala, endemic to the chapada dos veadeiros range, goiás (brazil), are described as polygala suganumae and p. patens, illustrated, and their morphology is compared to related species
Monitoramento dos extratos brutos de espécies de Polygala (Polygalaceae) utilizando Artemia salina
Montanher, A.B.P.;Pizzolatti, M.G.;Brighente, I.M.C.;
Revista Brasileira de Farmacognosia , 2003, DOI: 10.1590/S0102-695X2003000300025
Abstract: extracts of two species of polygala were subjected to a bioscreening study to detect cytotoxic activity by the brine shrimp lethality bioassay. the results obtained for the crude extracts, hexanic and dichlorometane fractions of polygala sabulosa aw. benn. were promising. these results suggest that in those plant extracts, which showed activity for this bioassay, more specific bioassays should be encouraged, in order to confirm these conclusions.
El género Polygala (Polygalaceae) en el Mediterráneo Occidental  [cached]
Paiva, Jorge
Collectanea Botanica , 1989,
Abstract: Polygala L. comprises about 720 species (400 American, 206 African, 32 European, 70 Asiatic and 12 Australian).The genus is extended all over the world except Polynesia. New Zealand and the polar regions. The 24 Western Mediterranean species of Polygala belong to three subgenera (5 to the subgen. Chamaebuxus, 1 to the subgen. Brachytropis and 18 to the subgen. Polygala). Looking into morphological, caryological, Palynological, anatomical and ontogenic data, subgenus Chamaebuxus looks more primitive than subgenus Polygala, and subgenus Brachytropis is perhaps derived from the former. Polygala es un género con cerca de 720 especies (400 americanas, 206 africanas, 32 europeas, 70 asiáticas y 12 australianas ) distribuidas por casi lodo el globo excepto Polinesia, Nueva Zelanda y las regiones polares. Las 24 especies de Polygala confinadas en el Mediterráneo Occidental pertenecen a 3 subgéneros (5 al subgénero Chamaebuxus, 1 al subgénero Brachytropis y 18 al subgénero Polygala). De los datos morfológicos, cariológicos, palinológicos, anatómicos y ontogénicos, se desprende que el subgénero Chamaebuxus resulta más primitivo que el subgénero Polygala y que el subgénero Brachytropis se deriva tal vez del primero de los citados.
V.R. Mohan et al
International Journal of Pharmaceutical Sciences and Research , 2012,
Abstract: In the present study, Polygala rosmarinifolia whole plant was extracted with ethanol and evaluated for anti-inflammatory activity in rats using a carrageenan induced paw edema method. Ethanol extract exhibits potent anti-inflammatory activity at 200mg/kg at 3rd hr after administration is compared with reference standard drug, Indomethacin. Observed pharmacological activity in the present study provides scientific validation of ethnomedicinal use of this plant in treating acute inflammation.
Trypanocidal activity of coumarins and styryl-2-pyrones from Polygala sabulosa A.W. Bennett (Polygalaceae)
Pizzolatti, Moacir G.;Mendes, Beatriz G.;Cunha Jr, Anildo;Soldi, Cristian;Koga, Adolfo H.;Eger, Iriane;Grisard, Edmundo C.;Steindel, Mário;
Revista Brasileira de Farmacognosia , 2008, DOI: 10.1590/S0102-695X2008000200006
Abstract: bioactivity of fractions and compounds obtained from polygala sabulosa against trypanosoma cruzi epimastigote, blood trypomastigote and amastigote forms were evaluated in vitro. dichloromethane and ethyl acetate fractions showed a strong trypanocidal activity on epimastigotes (ic50 < 10.4 μg/ml). chromatographic analysis by tlc of these fractions confirmed the presence of previously described compounds (dihydrostyryl-2-pyrones, styryl-2-pyrones and 6-methoxy-7-prenyloxycoumarin). the dichloromethane fraction was fractioned by silica gel column chromatography to afford the compound α-spinasterol and the ethyl acetate fraction yielded apigenin, quercetin and a quercetin-3-o-glucoside, being the first description for the polygala genus. 4-methoxy-6-(11,12-methylenedioxy-14-methoxydihydrostyryl)-2-pyrone, 4-methoxy-6-(11,12-dimethoxystyryl)-2-pyrone, 6-methoxy-7-prenyloxycoumarin and quercetin-3-o-glucoside showed a weak activity against blood trypomastigotes (ic50 < 1008.6 μg/ml). the prenylated coumarin was the most active compound against both epimastigote and trypomastigote forms, ic50 10.5 and 88.2 μg/ml, respectively. the hemolytic activity and cell toxicity of each active compound was also assessed. furthermore, 4-methoxy-6-(11,12-methylenedioxy-14-methoxydihydrostyryl)-2-pyrone and 6-methoxy-7-prenyloxycoumarin reduced 4 times the t. cruzi infection rate for vero cells at 100 and 50 μg/ml, respectively. these results show for the first time active compounds against t. cruzi in p. sabulosa.
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