Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 2 de 2
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
Toxins (Basel) ; 15(11)2023 10 26.
Artigo em Inglês | MEDLINE | ID: mdl-37999491

RESUMO

The survival of Escherichia coli (E. coli) bacteria, the most common faecal indicator bacteria (FIB), may be significantly affected by cyanobacteria present during a harmful algal bloom (HAB). Therefore, the effect of Microcystis on the survival of FIB E.coli and coliforms was investigated. Microcosms containing two species of Microcystis (M. aeruginosa and M. smithii) were established and then inoculated with four reference strains of E. coli (ATCC 25922, 8739, 51813, and 11775) to explore the cyanobacteria-bacteria dynamics at a laboratory setting. Monitoring over several days showed normal growth of Microcystis, with or without the presence of E. coli. However, Microcystis was shown to dramatically decrease the survival of E. coli over time. Analysis of microcystin production by Microcystis was found to correlate with loss of E. coli, suggesting a toxic effect of microcystins on E. coli bacteria. This phenomenon was also demonstrated for a natural consortium of E. coli and coliform bacteria by inoculating with contaminated lake water. The results indicate that the use of E. coli as FIB may be greatly compromised in the presence of Microcystis spp. such as during a HAB when associated toxins are produced.


Assuntos
Cianobactérias , Microcystis , Escherichia coli , Microcistinas/toxicidade , Proliferação Nociva de Algas , Lagos/microbiologia
2.
Proteomics ; 5(15): 3831-5, 2005 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-16145708

RESUMO

The protein constituents of serum can range from grams to picograms per liter, making it technically difficult to achieve in-depth proteomic analysis. Removal of highly abundant proteins, such as albumin, coupled to powerful protein separation methods is required for increased sample load, thus facilitating detection and identification of low-abundant proteins. We report here a chemical-based extraction method for the effective and specific removal of albumin from serum.


Assuntos
Albuminas/isolamento & purificação , Eletroforese das Proteínas Sanguíneas/métodos , Soro/química , Sulfato de Amônio , Biomarcadores/sangue , Fracionamento Químico , Precipitação Química , Cromatografia de Afinidade , Eletroforese em Gel Bidimensional , Eletroforese em Gel de Poliacrilamida , Feminino , Humanos , Masculino , Triazinas
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...