Nanobacteria
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Nanobacteria-like particles : a threat to cell cultures
The main goal of this study is to alert researchers who work with cell cultures for the risk of contamination by structures called nanobacteria (NB). NB are tiny structures with size varying from 80 to 500 nm, commonly occurring in clusters and producing a biofilm which contains carbonate or hydroxyl apatite. The most likely source of cell culture contaminat
Publicado em: 2010
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2. Análise de diferentes materiais biológicos para a detecção de nanopartículas calcificadas e de microrganismos / Analysis of deferent biological structers for the detention of nanopartículas calcificadas and microrganismos
Nanobactérias (NPC) ou nanopartículas calcificadas (NPC) são estruturas não convencionais, com tamanho de 100 a 1000 vezes menor do que bactérias comuns e com taxa de crescimento muito lenta, o que torna sua detecção difícil pelos métodos convencionais. Essas estruturas têm sido observadas no meio ambiente e em diferentes materiais biológicos. Sob
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2008
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3. Partículas semelhantes à nanobactérias: uma ameaça às culturas de células
O principal objetivo deste estudo é alertar aos pesquisadores que trabalham com cultivos celulares sobre o risco de contaminação por estruturas denominadas nanobactérias (NB). NB são estruturas muito pequenas cujo tamanho varia de 80 a 500 nm e que comumente ocorrem em agrupamentos, produzindo biofilme de carbonato ou hidroxiapatita. A fonte mais prová
Brazilian Journal of Microbiology. Publicado em: 2007-03
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4. Detecção de nano-partículas calcificantes (NPC) em materiais biológicos / Detection of calcifing nano-particles (CNP) in biological materials
Nanobactérias (NB) são estruturas não convencionais, com tamanho de 100 a 1000 vezes menor do que bactérias comuns; além disso, sua taxa de crescimento é muito lenta, o que torna sua detecção difícil pelos métodos convencionais. Estas estruturas têm sido isoladas do meio ambiente e, também, em amostras de sangue e urina de animais e humanos, com
Publicado em: 2007
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5. Nanobacteria: An alternative mechanism for pathogenic intra- and extracellular calcification and stone formation
Calcium phosphate is deposited in many diseases, but formation mechanisms remain speculative. Nanobacteria are the smallest cell-walled bacteria, only recently discovered in human and cow blood and commercial cell culture serum. In this study, we identified with energy-dispersive x-ray microanalysis and chemical analysis that all growth phases of nanobacteri
The National Academy of Sciences.
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6. Attempted Isolation of Nanobacterium sp. Microorganisms from Upper Urinary Tract Stones
A single team has reported isolation of nanobacteria in human and bovine blood products, as well as, more recently, kidney stones. This has raised controversy. To confirm the data, we searched for nanobacteria from 10 aseptically removed upper urinary tract (UUT) stones. We used scanning electronic microscopy (SEM) with four stones and culture of stones on e
American Society for Microbiology.
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7. An alternative interpretation of nanobacteria-induced biomineralization
The reported isolation of nanobacteria from human kidney stones raises the intriguing possibility that these microorganisms are etiological agents of pathological extraskeletal calcification [Kajander, E. O. & Çiftçioglu, N. (1998) Proc. Natl. Acad. Sci. USA 95, 8274–8279]. Nanobacteria were previously isolated from FBS after prolonged incubation in
The National Academy of Sciences.
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8. Nanobacteria-like calcite single crystals at the surface of the Tataouine meteorite
Nanobacteria-like objects evidenced at the surface of the orthopyroxenes of the Tataouine meteorite in South Tunisia have been studied by scanning and transmission electron microscopies. A method of micromanipulation has been developed to ensure that exactly the same objects were studied by both methods. We have shown that the nanobacteria-like objects a
National Academy of Sciences.
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9. Inhibition of Nanobacteria by Antimicrobial Drugs as Measured by a Modified Microdilution Method
Compounds from 16 classes of antimicrobial drugs were tested for their abilities to inhibit the in vitro multiplication of nanobacteria (NB), a newly discovered infectious agent found in human kidney stones and kidney cyst fluids from patients with polycystic kidney disease (PKD). Because NB form surface calcifications at physiologic levels of calcium and ph
American Society for Microbiology.