Hypnea
Mostrando 1-12 de 50 artigos, teses e dissertações.
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1. Hypnea musciformis (Wulfen) J. V. Lamour. (Gigartinales, Rhodophyta) responses to gasoline short-term exposure: biochemical and cellular alterations
ABSTRACT Presence of toxic compounds in marine coastal waters has increased exponentially since Industrial Revolution. In this way, we aimed to evaluate biochemical and physiological changes occurring within Hypnea musciformis after short-term exposure to gasoline. Hypnea musciformis was cultivated without gasoline and then exposed to various concentrations
Acta Bot. Bras.. Publicado em: 31/01/2019
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2. Reproductive morphology and phenological aspects of one morphological variant of Hypnea pseudomusciformis (Gigartinales, Rhodophyta)
ABSTRACT Hypnea pseudomusciformis was recently described from South America, and has three morphological variants: “musciformis”, “nigrescens”, and “valentiae”. Information on the biology of these variants may help to explain this species’ wide morphological variation despite the absence of genetic divergence among variants. More morphological
Acta Bot. Bras.. Publicado em: 29/11/2018
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3. Evaluation of acetylcholinesterase inhibitory activity of Brazilian red macroalgae organic extracts
Abstract Alzheimer's disease affects nearly 36.5 million people worldwide, and acetylcholinesterase inhibition is currently considered the main therapeutic strategy against it. Seaweed biodiversity in Brazil represents one of the most important sources of biologically active compounds for applications in phytotherapy. Accordingly, this study aimed to carry o
Rev. bras. farmacogn.. Publicado em: 2015-12
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4. THE STRUCTURE OF SUBTIDAL MACROALGAL ASSEMBLAGES AT THE TAMOIOS ECOLOGICAL STATION, A THREATENED CONSERVATION UNIT IN RIO DE JANEIRO, BRAZIL
É insuficiente a caracterização da estrutura de comunidade de costões rochosos na Estação Ecológica de Tamoios (ESEC Tamoios), Baía da Ilha Grande, estado do Rio de Janeiro, assim como em outras unidades de conservação marinhas do Brasil. No presente estudo, foi descrita a assembleia de macroalgas do infralitoral raso de substrato rochoso em duas i
Braz. j. oceanogr.. Publicado em: 2015-03
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5. Influence of the shoot density of Halodule wrightii Ascherson from rocky and sandy habitats on associated macroalgal communities
Este estudo avaliou a influência da densidade do capim-agulha Halodule wrightii sobre a composição da comunidade algal associada, em habitats rochosos e arenosos da costa do Ceará, Nordeste do Brasil. A comunidade ficológica incluiu 18 espécies em de 10 famílias, integrantes de Rodophyta (72.2%), Chlorophyta (22.2%) e Phaeophyceae (5.5%). A maior prop
Braz. j. oceanogr.. Publicado em: 2013-12
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6. Responses of the molluscan fauna to environmental variations in a Halodule wrightii Ascherson ecosystem from Northeastern Brazil
RESUMO Este estudo observou as distribuições espaciais e temporais de moluscos em um prado de Halodule wrightii, verificando se eles respondem satisfatoriamente a mudanças sazonais neste ecossistema. Vinte e quatro espécies foram identificadas. Os quítons foram raros, os bivalves tiveram o maior número de espécies (11), seguidos pelos gastrópodes (9
An. Acad. Bras. Ciênc.. Publicado em: 10/10/2013
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7. Cytotoxic activity of marine algae against cancerous cells
This paper presents an investigation on the cytotoxic activity in human tumor cell from dichloromethane, chloroform, methanol, ethanol, water extracts, and hexane and chloroform fractions from green, brown and red algae collected at Riacho Doce Beach, north coast of Alagoas, Brazil, against the cancer cells K562 (chronic myelocytic leukemia), HEp-2 (laryngea
Rev. bras. farmacogn.. Publicado em: 13/09/2013
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8. Evaluation of the stocks of Hypnea musciformis (rhodophyta: gigartinales) on two beaches in Bahia, Brazil
Hypnea musciformis ocorre amplamente na costa nordeste do Brasil, sendo uma das mais importantes fontes naturais de k-carrageenana que é utilizado nas indústrias alimentícia e cosmética. Apesar do potencial de explotação, pouco se sabe sobre sua ecologia. O objetivo deste estudo foi conhecer a biologia e ecologia de H. musciformis no Brasil através da
Braz. j. oceanogr.. Publicado em: 2013-03
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9. Role of the NO/K ATP pathway in the protective effect of a sulfated-polysaccharide fraction from the algae Hypnea musciformis against ethanol-induced gastric damage in mice
Seaweeds are the most abundant source of polysaccharides such as alginates and agar, as well as carrageenans. This study aimed to investigate the gastroprotective activity and the mechanism underlying this activity of a sulfated-polysaccharide fraction extracted from the algae Hypnea musciformis (Wulfen) J.V. Lamour. (Gigartinales-Rhodophyta). Mice were trea
Rev. bras. farmacogn.. Publicado em: 01/02/2013
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10. Estudos morfológicos e taxonômicos em Hypnea cornuta (Kützing) J. Agardh (Gigartinales, Rhodophyta) no litoral da Bahia, Brasil
Durante estudo sobre as espécies de Hypnea do litoral do estado da Bahia foram encontrados exemplares de Hypnea cornuta (Kützing) J. Agardh em coletas realizadas no extremo sul do estado. Este é o primeiro relato de H. cornuta para o estado da Bahia, Brasil. É fornecida uma caracterização detalhada dos aspectos morfológicos, anatômicos e reprodutivos
Acta Bot. Bras.. Publicado em: 2012-12
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11. Hepatoprotective efficacy of Hypnea muciformis ethanolic extract on CCl4 induced toxicity in rats
The ethanolic extract of Hypnea muciformis (red algae) was tested for hepatoprotective activity against experimentally induced liver damage by Carbon tetrachloride (CCl4) in male albino rats. The levels of serum enzymatic and biochemical parameters such as serum glutamate oxaloacetate transaminase (SGOT), Serum glutamate pyruvate transaminase (SGPT), alkalin
Braz. arch. biol. technol.. Publicado em: 2012-12
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12. Comparison of extraction and transesterification methods on the determination of the fatty acid contents of three Brazilian seaweed species
Seaweeds are photosynthetic organisms important to their ecosystem and constitute a source of compounds with several different applications in the pharmaceutical, cosmetic and biotechnology industries, such as triacylglycerols, which can be converted to fatty acid methyl esters that make up biodiesel, an alternative source of fuel applied in economic importa
Revista Brasileira de Farmacognosia. Publicado em: 21/06/2012