Ecdysone
Mostrando 1-12 de 136 artigos, teses e dissertações.
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1. Compared activity of agonist molecules towards ecdysone receptor in insect cell-based screening system
RESUMO: O receptor de ecdisona, naturalmente ativado por hormônios esteroidais, é uma proteína-chave nos processos de muda e reprodução de insetos. A ativação artificial desse receptor por meio de pesticidas específicos induz um processo de ecdise anômala, levando o inseto à morte por dessecação e inanição. Neste trabalho, foi estabelecido um p
Arq. Inst. Biol.. Publicado em: 25/11/2019
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2. Perspectives on the integration of a supercritical fluid extraction plant to a sugarcane biorefinery: thermo-economical evaluation of CO2 recycle systems
Abstract In the present study, the software Aspen Plus® was used to analyse two different systems for CO2 recycle in a SFE process for extraction of more polar compounds using ethanol as co-solvent, the most common co-solvent used due to its environment-friendly nature. The extraction process of β-ecdysone from Brazilian ginseng roots was considered as exa
Food Sci. Technol. Publicado em: 08/05/2017
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3. Effects of both ecdysone and the acclimation to low temperature, on growth and metabolic rate of juvenile freshwater crayfish Cherax quadricarinatus (Decapoda, Parastacidae)
Growth, metabolic rate, and energy reserves of Cherax quadricarinatus (von Martens, 1868) juveniles were evaluated in crayfish acclimated for 16 weeks to either 25ºC (temperature near optimum) or 20ºC (marginal for the species). Additionally, the modulating effect of ecdsyone on acclimation was studied. After 12 weeks of exposure, weight gain of both exper
Iheringia, Sér. Zool.. Publicado em: 2013-06
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4. Quantification of β-ecdysone in differents parts of Pfaffia glomerata by HPLC
Pfaffia glomerata (Spreng.) Pedersen, Amaranthaceae, is widely distributed in Brazil. Roots are considered as the world's greatest supplier and β-ecdysone is the most important compound extracted from roots of Pfaffia glomerata. So, the aim this study was analyze the presence of β-ecdysone in the inflorescences and stems and compared with the content from
Rev. bras. farmacogn.. Publicado em: 20/09/2012
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5. Lethal and Sublethal Effects of Methoxyfenozide on the Development, Survival and Reproduction of the Fall Armyworm, Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae)
The lethal and sublethal effects of the ecdysone agonist methoxyfenozide on the fall armyworm, Spodoptera frugiperda (J. E. Smith), were investigated by feeding a methoxyfenozide-treated diet to fifth instars until pupation in doses corresponding to the LC10 and LC25 for the compound. Larval mortality reached 8% and 26% in the low and high concentration grou
Neotropical Entomology. Publicado em: 2011-02
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6. Characterization of chitinase gene from lutzomyia longipalpis:alternative splicing description and search for promoter sequence / Caracterização de gene de quitinase de Lutzomyia longipalpis: descrição de processamento alternativo e busca por seqüência promotora
Leishmaniasis is a disease caused by Leishmania protozoa transmitted by the bite of infected sand flies. Current methods used to combat this illness have been shown to be inefficient, and better knowledge of aspects related to Leishmania-sand fly interaction are necessary for the development of new controlling methods. A cDNA codifying for a midgutspecific c
Publicado em: 2009
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7. Grafting and propagation in vitro of fafia [Pfaffia glomerata (Spreng.) Pedersen] / Enxertia e propagação in vitro de fáfia [Pfaffia glomerata (Spreng.) Pedersen]
Pfaffia glomerata, popularmente conhecida como Ginseng brasileiro, é uma importante espécie medicinal cuja demanda no mercado e a forma de extrativismo levaram a sua inclusão na lista de espécies prioritárias para a conservação. Apresenta grande diversidade genética entre suas populações naturais, sendo essa variabilidade tanto na produção de bio
Publicado em: 2008
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8. Estudo dos efeitos da infecção por Plasmodium gallinaceum em processos fisiológicos de Aedes aegypti. / Effects on physiological processes in Plasmodium gallinaceum infected Aedes aegypti.
Insect disease vectors show decreased fecundity when infected with Plasmodium. This phenomenon has already been demonstrated in laboratory models such as Aedes aegypti, Anopheles gambiae and Anopheles stephensi . Some physiological processes of Aedes aegypti suffer changes when the vector is infected with Plasmodium gallinaceum . The ecdysone (20-hidroxyecdy
Publicado em: 2007
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9. TISSUE CULTURE AND b-ECDYSONE PRODUCTION OF Pfaffia glomerata AND Pfaffia tuberosa (AMARANTHACEAE) / CULTURA DE TECIDOS E PRODUÇÃO DE b-ECDISONA EM Pfaffia glomerata E Pfaffia tuberosa (AMARANTHACEAE)
Many biotechnological techniques have been formed by new tools to the study of medicinal plants and for the production of homogenous and productive biomass. This work aimed to examine aspects of morphogenesis and callogenesis in Pfaffia glomerata and Pfaffia tuberosa as well as to evaluate the production of -ecdysone in micropropagated plants, clones and cal
Publicado em: 2006
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10. Effect of blood components, abdominal distension, and ecdysone therapy on the ultrastructural organization of posterior midgut epithelial cells and perimicrovillar membranes in Rhodnius prolixus
The effects of blood components, nerve-cord severance, and ecdysone therapy on the posterior midgut epithelial cells of 5th-instar Rhodnius prolixus nymphs 10 days after feeding were analyzed by transmission electron microscopy. Cutting the nerve-cord of the blood-fed insects partially reduced the development of microvilli and perimicrovillar membranes (PMM)
Memórias do Instituto Oswaldo Cruz. Publicado em: 2004-12
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11. Ecdysone-inducible gene expression in mammalian cells and transgenic mice.
During metamorphosis of Drosophila melanogaster, a cascade of morphological changes is triggered by the steroid hormone 20-OH ecdysone via the ecdysone receptor, a member of the nuclear receptor superfamily. In this report, we have transferred insect hormone responsiveness to mammalian cells by the stable expression of a modified ecdysone receptor that regul
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12. The ovary as a source of alpha-ecdysone in an adult mosquito.
The ovaries of the mosquito Aedes aegypti cultured in vitro secrete material that behaves like ecdysone in a radioimmunoassay. The material was identified as alpha-ecdysone by high-resolution liquid and gas-liquid chromatography. Secretion reached a maximum 16 hr after a blood meal as shown by bioassay and direct determination. Ovariectomy reduced the concen