Cyanotoxin
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Biodegradation of [D-Leu1] microcystin-LR by a bacterium isolated from sediment of Patos Lagoon estuary, Brazil
Background Toxic cyanobacterial blooms are recurrent in Patos Lagoon, in southern Brazil. Among cyanotoxins, [D-Leu1] microcystin-LR is the predominant variant whose natural cycle involves water and sediment compartments. This study aimed to identify and isolate from sediment a bacterial strain capable of growing on [D-Leu1] microcystin-LR. Sediment and wat
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 31/03/2015
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2. Microcystin-XR degradation by bacteria isolated from public water supply system / Degradação da microcistina-XR por bactérias isoladas de sistema de abastecimento público de água
Microcystins are potent hepatotoxins and tumor promoters found in freshwaters that cause public health risks and thus represent a serious problem for water treatment plants. The cyanobacterium genus Microcystis is the most known toxin-producer and the most common bloom-forming in water reservoirs used for public supply. However, some bacteria are able to use
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/09/2011
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3. Estudo da estrutura da comunidade zooplanctônica e sua relação com as cianobactérias em três reservatórios do médio rio Tietê, SP / Zooplankton structure and its relationships with cyanobacteria in three reservoirs of middle Tietê river, São Paulo State, Brazil
Cyanobacteria blooms are increasingly being detected in São Paulo state reservoirs, particularly in those of middle Tietê river basin. The presence of cyanobacteria can cause deterioration of water quality in these systems due to its potential toxicity to the aquatic biota, and also risks to human health. The aim of the present srtudy was to analyse the st
Publicado em: 2010
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4. Dinâmica de cianobactérias e cianotoxinas em um braço do reservatório da usina hidroelétrica Luiz Eduardo Magalhães e suas implicações para o abastecimento público de Palmas - TO
O trabalho apresenta resultados de um estudo sobre a dinâmica de cianobactérias e cianotoxinas e suas relações com variáveis climáticas, bióticas e abióticas do braço do reservatório da usina hidroelétrica Luiz Eduardo Magalhães (UHE Lajeado), em Palmas, Tocantins. O reservatório abrange 626 km2, extensão de 172 km, volume operacional de 4,9.10
Publicado em: 2010
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5. Estudo das interações fitoplâncton-protozooplâncton no reservatório de Barra Bonita, SP, com ênfase na toxicidade de microcistinas
The increasing eutrophication of aquatic environments, resulting from the human activities, is related to cyanobacterial blooms that are described, all over the world, as the agents causing toxicity and death in humans, domestic and wild animals. Recently, studies are being conducted aiming to prove the possibility of the biotransference of the cyanobacteria
Publicado em: 2009
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6. Development of immunoassay techniques to detect microcystin in environmental samples / Desenvolvimento de técnicas de imunoensaio para detecção de microcistina em amostras ambientais
The contamination of drinking water by cyanobacterial toxins is a public health issue and a concern for water authorities throughout the world. Microcystin-LR (MCLR) is a hazardous cyclic heptapeptide cyanotoxin, which inhibits protein phosphatase PP1 and PP2A in hepatocytes. Microcystins are produced by several genera of cyanobacteria and presents more than
Publicado em: 2009
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7. AVALIAÇÃO DO CRESCIMENTO, PADRÕES METABÓLICOS E CAPACIDADE FOTOSSINTÉTICA DE Microcystis panniformis Komárek et al. (CYANOBACTERIA) E Ankistrodesmus gracilis (Reisch) Korsikov (CHLOROPHYTA) EM FONTES DE NITROGÊNIO INORGÂNICAS E ORGÂNICAS
The phytoplankton, constituted mainly of planktonic algae and cyanobacteria, is extremely important in the aquatic ecosystems since, besides being a food source for aquatic animals, it also produces oxygen. The cyanobacteria are becoming an important group mostly in eutrophic systems. Several hypotheses tried to explain the dominance of cyanobacteria and man
Publicado em: 2007
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8. Analysis of distribution, density and toxicity of cyanobacterial blooms and its toxins in the reservoirs of Middle and Low Tietê river (SP) and its relation with limnological characteristics of this system / Análise da distribuição, densidade e toxicidade de florações de cianobactérias em reservatórios do médio e baixo rio Tietê (SP) e relação com as características limnológicas do sistema
Reservoirs in Brazil, particularly in São Paulo State, are important ecosystems which were built up successively in the last 40 years. Some of these reservoirs, mainly at the Middle and the Low Tietê river cascade system are eutrophic. Frequently cyanobacterial blooms are related to these eutrophic conditions which compromise the multiple use of the reserv
Publicado em: 2005
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9. Dinâmica de populações de cianobactérias em reservatório eutrofizado no semi-árido nordestino brasileiro.
The Armando Ribeiro Gonçalves reservoir, located in the semi-arid of the Rio Grande do Norte (06o08 S ; 37o 07 W), in Northeast Brazil, represents 68% of the total surface water accumulated in the state. The reservoir, with maximum volumetric capacity of 2.4 x 109, provides 400 thousands habitants and also is destined to irrigation, leisure and fishing. It
Publicado em: 2003
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10. Rapid Isolation of a Single-Chain Antibody against the Cyanobacterial Toxin Microcystin-LR by Phage Display and Its Use in the Immunoaffinity Concentration of Microcystins from Water
A naïve (unimmunized) human semisynthetic phage display library was employed to isolate recombinant antibody fragments against the cyanobacterial hepatotoxin microcystin-LR. Selected antibody scFv genes were cloned into a soluble expression vector and expressed in Escherichia coli for characterization against purified microcystin-LR by competition enzyme-li
American Society for Microbiology.