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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Análise da legislação sobre o uso de plantas medicinais no Brasil. Potencial químico-farmacológico de Palicourea rigida Kunth

Moraes, Muiara Aparecida 19 July 2013 (has links)
Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-03-30T17:53:42Z No. of bitstreams: 1 muiaraaparecidamoraes.pdf: 2242922 bytes, checksum: 649dffc13e33d3863587f15980f26e52 (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-04-24T02:55:39Z (GMT) No. of bitstreams: 1 muiaraaparecidamoraes.pdf: 2242922 bytes, checksum: 649dffc13e33d3863587f15980f26e52 (MD5) / Made available in DSpace on 2016-04-24T02:55:39Z (GMT). No. of bitstreams: 1 muiaraaparecidamoraes.pdf: 2242922 bytes, checksum: 649dffc13e33d3863587f15980f26e52 (MD5) Previous issue date: 2013-07-19 / Palicourea rigida Kunth, pertencente à família Rubiaceae, têm sido utilizada na medicina popular para o tratamento de inflamação e infecção do trato urinário e do aparelho reprodutor feminino. O presente trabalho teve como objetivo avaliar o potencial químico-farmacológico de P. rigida e verificar a sua adequação aos padrões normativos do Sistema Único de Saúde (SUS). Folhas secas e pulverizadas foram submetidas à extração em etanol. Após remoção do solvente, extrato etanólico sofreu fracionamento por partição, produzindo as frações hexânica, diclorometânica, em acetato de etila e butanólica. Foram realizadas prospecção fitoquímica, quantificação de fenóis totais e flavonoides por espectrofotometria e análise por cromatografia líquida de alta eficiência. A atividade antioxidante foi avaliada pelos métodos do DPPH, bioautografia, poder de redução e -caroteno/ácido linoléico. A toxidez aguda foi determinada e as atividades antinociceptiva (testes de contorções, formalina e placa quente) e antiinflamatória (ensaios de edema de pata e pleurisia) foram realizadas. Análise da viabilidade da inclusão da P. rigida na lista de plantas de interesse ao SUS foi verificada. Os dados foram demonstrados através da média±erro padrão. Análise de variância seguida dos testes de Turkey ou Student-Newman-Keuls foram usados para medir o grau de significância para p < 0,05. Flavonoides, taninos, cumarinas, terpenoides e esteroides, alcaloides e antraquinonas foram detectadas em P. rigida. Os fenóis totais variaram entre 3,72 e 28,05 g/100 g, enquanto os flavonoides foram de 1,95 e 14,15 g/100g. Rutina e quercetina foram identificadas nas frações em acetato de etila e butanólica, respectivamente. Usando DPPH, as CE50 mostraram valores entre 24,51 ± 0,52 a 125,79 ± 0,10μg/mL, enquanto o poder de redução produziu CE50 de 183,09 ± 1,84 a 703,14 ± 1,15 μg/mL. As porcentagens de inibição da oxidação do -caroteno foram de 24,30 ± 3,38 a 84,76 ± 1,40. O extrato etanólico inibiu as contorções abdominais em 32,88 (100 mg/kg), 34,25 (200 mg/kg) e 61,64% (400 mg/kg). Doses de 200 e 400 mg/kg inibiram a primeira fase em 13,80 (200 mg/kg) e 24,74% (400 mg/kg), enquanto a segunda fase foi reduzida em 10,52 (100 mg/kg), 22,92 (200 mg/kg) e 35,73% (400 mg/kg). Após 90 min de tratamento, doses de 200 mg/kg (36,61%) e 400 mg/kg (71,21%) prolongaram o tempo de latência. Doses de 200 e 400 mg/kg reduziram o edema de pata após 3 e 4 h de tratamento. O volume do exsudato foi reduzido em 27,18 (200 mg/kg) e 36,89% (400 mg/kg) e o número de leucócitos totais sofreu inibição de 11,94 e 24,91% nas doses de 200 e 400 mg/kg, respectivamente. Os resultados indicaram que P. rigida constitui uma fonte promissora de substâncias bioativas com atividades antioxidante, antinociceptiva e anti-inflamatória, justificando o uso popular e reunindo características importantes de interesse do SUS. / Palicourea rigida Kunth, belonging to the family Rubiaceae, have been used in folk medicine for the treatment of inflammation and infection of the urinary tract and the female reproductive tract. This study aimed to evaluate the potential chemical-pharmacological P. rigida and verify its appropriateness to normative standards of the Unified Health System (SUS). Dried and sprayed leaves were extracted in ethanol. After removing the solvent, ethanol extract was submmited to the fractionation by partition to obtain the hexanic, dichlorometanic, in ethyl acetate and butanolic fractions. Phytochemical screening, quantification of total phenols and flavonoids by spectrophotometry and analysis by high performance liquid chromatography were performed. The antioxidant activity was evaluated by DPPH, bioautography, power reduction and -carotene/linoleic acid methods. Acute toxicity was determined and the antinociceptive (writhing, formalin and hot plate tests) and anti-inflammatory activities (paw edema and pleurisy methods) were evaluated. Analysis of the feasibility of inclusion of P. rigida in list of plants of interest to the SUS has been verified. Data were expressed by mean ± standard error. Analysis of variance followed by Turkey or Student-Newman-Keuls tests was used to measure the degree of significance to p < 0.05. Flavonoids, tannins, coumarins, terpenoids and steroids, alkaloids and anthraquinones were detected in P. rigida. The total phenols ranged between 3.72 and 28.05 g/100 g, while flavonoids were 1.95 and 14.15 g/100g. Rutin and quercetin were identified in ethyl acetate and butanolic fractions, respectively. Using DPPH, the values of EC50 showed between 24.51 ± 0.52 to 125.79 ± 0.10 mg/mL, while reducing power produced EC50 of 183.09 ± 1.84 to 703.14 ± 1.15 mg/mL. The percentages of inhibition of -carotene oxidation were 24.30 ± 3.38 to 84.76 ± 1.40. The ethanol extract inhibited the writhing at 32.88 (100 mg/kg), 34.25 (200 mg/kg) and 61.64% (400 mg/kg). Doses of 200 and 400 mg/kg inhibited the first phase in 13.80 (200 mg/kg) and 24.74% (400 mg/kg), while the second phase was reduced by 10.52 (100 mg / kg) , 22.92 (200 mg/kg) and 35.73% (400 mg/kg). After 90 min of treatment, doses of 200 mg/kg (36.61%) and 400 mg/kg (71.21%) prolonged the latency time. Doses of 200 and 400 mg/kg reduced the paw edema after 3 and 4 hours of treatment. The volume of exudate was reduced by 27.18 (200 mg/kg) and 36.89% (400 mg/kg) and total white cell count suffered inhibition of 11.94 and 24.91% at the doses of 200 and 400 mg/kg, respectively. The results indicated that P. rigida is a promising source of bioactive compounds with antioxidant, antinociceptive and anti-inflammatory activities that justifies the popular usage and gathers important characteristics of interest to the SUS.

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