Results 71 to 80 of about 1,311 (114)

Cyanobateria and toxicity: public health impact in Portugal and Brazil [PDF]

open access: yes, 2012
Um aumento da concentração de nutrientes na água poderá desencadear fluorescências de cianobactérias (densidades >200 cel/mL). Sob determinadas condições as cianobactérias produzem toxinas responsáveis pelo envenenamento de animais e humanos.
Bellém, Fernando   +3 more
core  

Eutrophication, toxic cyanobacteria and cyanotoxins: when ecosystems cry for help [PDF]

open access: yes, 2006
Eutrophication of freshwater resources has been studied worldwide and its consequences are of concern especially in waters used for recreation or drinking.
Vasconcelos, Vitor
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Avaliação do potencial cancerigénico de microcistinas (cianotoxinas)

open access: yes, 2009
Tese de doutoramento, Farmácia (Toxicologia), 2009, Universidade de Lisboa, Faculdade de ...
openaire   +1 more source

Estudio por microscopía de fuerza atómica (AFM) del soporte de TiO2 sobre vidrio para la degradación de contaminantes por fotocatálisis hetereogénea [PDF]

open access: yes, 2015
La necesidad de preservar el medio ambiente ha llevado a la búsqueda de nuevos métodos para la eliminación eficiente de los compuestos químicos que alteran la estabilidad de nuestros recursos.
Giraldo, María de los Ángeles   +1 more
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Señalización pro-apoptótica mediada por microcistina-LR en ratones intoxicados subcrónicamente

open access: yes, 2010
La microcistina-LR (MC-LR) es una toxina producida por cianobacterias de agua fresca capaz de generar graves intoxicaciones tanto en animales como en humanos. Se sugiere que la acción de MC-LR se debe a un aumento del estrés oxidativo y a su capacidad de inhibir proteínas fosfatasas tipo 1 y 2A (PP1 y PP2A), lo cual deriva en hiperfosforilación ...
Lezcano, Noelia   +4 more
openaire   +1 more source

Bioaccesibilidad de cianotoxinas en mejillones mediante un modelo de digestión in vitro [PDF]

open access: yes, 2019
Las cianobacterias son un diverso grupo de microorganismos procariotas cuya proliferación en masa da lugar a floraciones en las que se liberan sus metabolitos secundarios, entre los que destacamos las cianotoxinas, como las ...
Cascajosa Lira, Antonio
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Occurrence of Microcystis aeruginosa and microcystins in Río de la Plata river (Argentina) [PDF]

open access: yes, 2020
This paper is the first report on microcystins producer blooms of Microcystis aeruginosa in the Argentinean coast of the Río de la Plata river, the most important drinking water supply of Argentina. The distribution of toxic cyanobacterium Microcystis cf.
Andrinolo, Darío   +8 more
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EFEITO DE DIFERENTES CONCENTRAÇÕES DE CARBONO ORGÂNICO DISSOLVIDO E BACTÉRIAS NA DEGRADAÇÃO DE MICROCISTINAS (CIANOTOXINA) [PDF]

open access: yes, 2017
Microcystins degradation depends on several factors like initial concentration in water, presence of microorganisms, temperature, pH, presence of other available sources of organic carbon, and others.
Oliveira e Azevedo, Sandra Maria Feliciano de   +1 more
core   +1 more source

Risk assessment methodologies in the field of contaminants, food contact materials, technological ingredients and nutritional risks. [PDF]

open access: yesEFSA J, 2019
Department of Nutrition and Bromatology   +6 more
europepmc   +1 more source

Variation in the synthesis of microcystin in response to saline and osmotic stress in Microcystis ruginosa PCC7806 [PDF]

open access: yes, 2015
The growth and synthesis of microcystin in Microcystis aeruginosa PCC7806 was studied in cells grown in the presence of NaCl or with sucrose. The saline stress caused a decrease in the transcript levels of mcyD, one of the genes involved in microcystin ...
Bes, M.T.   +4 more
core  

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