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Long-term maintenance of in vitro cultures affects growth and secondary metabolism of St. John's Wort Ciência Rural
Figueiró,Adriana de Andrade; Correa,Cynthia Manira; Astarita,Leandro Vieira; Santarém,Eliane Romanato.
Hypericum perforatum is a traditional medicinal plant with wound healing and antidepressant properties. Efficiency of micropropagation is often related to the long term maintenance of tissues in culture, which may alter the secondary metabolism of plants. The objective of this study was to evaluate growth and secondary metabolism of in vitro shoots of H. perforatum on short and long term maintenance of cultures (30 and 100 days). The effect of BA and NAA supplementation was evaluated during 30 days of culture. Adventitious shoots were cultivated on MS medium supplemented with 4.4mM BA alone or in combination with 0.05mM NAA for 30 days. A hormone-free medium was used as control. Shoots cultivated for 100 days were maintained in presence of 4.4mM BA....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tissue culture; Hypericum perforatum; Hypericin; Phenolic compounds.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010001000010
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Retrospective cost-utility and budget impact assessments of Hypericum perforatum in contrast with Fluoxetine treatment for depression in Karachi, Pakistan BJPS
Ahmad,Syed Muzzammil; Masroor,Darakhshan; Azhar,Iqbal; Ahmed,Nadia.
In this study we have compared two different types of therapies i.e. herbal and allopathic system of therapies for Depression and studied them from the social perspectives. The Hypericum perforatum is compared with Fluoxetine [HCL] in terms of cost-utility and financial savings thereby evaluating its influence on annual expenditure of depressive patients that were randomly selected from 178 union councils of the city of Karachi, Pakistan. For both system of therapies a total of 356 patients were selected by stratified random sampling. Taking frequency of depression as ‘1’ annually with discount rate at 3% for calculating the burden-of-illness in terms of disability-adjusted-life-years. The cost-utility and the budget-impact assessments were carried out to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hypericum perforatum; Fluoxetine; Burden of illness; Disability-Adjusted-Life-Years; Incremental-Cost-Effectiveness-Ratio.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100581
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Temperatura, nitrato de potássio e fotoperíodo na germinação de sementes de Hypericum perforatum L. e H. Brasiliense Choisy Bragantia
Faron,Maria Luisa Bertelle; Perecin,Maria Beatriz; Lago,Antonio Augusto do; Bovi,Odair Alves; Maia,Nilson Borlina.
Hypericum perforatum L. e H. brasiliense Choisy, da família Clusiaceae, são espécies de plantas de considerável valor medicinal. A primeira é comercialmente cultivada na Europa e largamente utilizada como fitoterápico para tratamento da depressão. A segunda é nativa do Brasil e, recentemente, vem sendo objeto de muitos estudos por possuir o mesmo potencial farmacológico. Neste trabalho, as sementes de ambas as espécies foram investigadas com relação à massa de mil sementes e a diversas condições de germinação, combinando-se quatro temperaturas, ou seja, 20, 25, 30 e 20-30 ºC, em presença ou ausência de luz e com ou sem umedecimento do substrato de germinação com solução aquosa de nitrato de potássio a 0,2%. O diminuto tamanho das sementes ficou bem...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hypericum perforatum; Hypericum brasiliense; Plantas medicinais; Sementes; Massa de sementes; Porcentagem de germinação.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052004000200004
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The male reproductive system and the effect of an extract of a medicinal plant (Hypericum perforatum) on the labeling process of blood constituents with technetium-99m BABT
Santos-Filho,Sebastião David; Fonseca,Adenilson de Souza da; Bernardo-Filho,Mario.
Hypericum perforatum (hiperico) is a plant that has been used to treat diseases and also inhibits rat and human vas deferens contractility. In nuclear medicine, stannous chloride (SnCl2) is used as a reducing agent to obtain radiopharmaceuticals labeling with technetium-99m. As the SnCl2 seems to have adverse effects related with the reproductive performance of male rabbits as well as the human consumption of hiperico might affect sexual function. In the present work, consistent results show significant changes on the blood constituents labeled by technetium-99m obtained from young rats under the effect of an hiperico extract as opposed to blood samples equally treated taken from elderly rat.. Supposedly, this extract could protect the male reproductive...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Stannous chloride; Young animals; Elderly animals; Sexual function; Technetium-99m; Hypericum perforatum.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000600011
Registros recuperados: 4
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