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Articolul precedent |
Articolul urmator |
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Ultima descărcare din IBN: 2021-04-30 14:09 |
Căutarea după subiecte similare conform CZU |
619.9 (2) |
Mедицинские науки (11143) |
SM ISO690:2012 POIATA, A., TUCHILUS, Cristina, CREANGA, Dorina-Emilia. The evidence of the changes in the antimicrobial properties of pyoverdine after supplying with magnetic nanoparticles. In: Fizică şi tehnică: procese, modele, experimente, 2012, nr. 1, pp. 5-10. ISSN 1857-0437. |
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Fizică şi tehnică: procese, modele, experimente | ||||||
Numărul 1 / 2012 / ISSN 1857-0437 | ||||||
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CZU: 619.9 | ||||||
Pag. 5-10 | ||||||
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Pseudomonas aeruginosa is a widely spread microorganism with many ecological nishes including human body. Magnetite nanoparticles coated with sodium oleate and dispersed in deionized water were prepared. The magnetite suspension concentrations in the culture medium of Pseudomonas aeruginosa were equal to: 0.0075–0.015-0.03-0.06-0.12-0.25-1.0-2.0 μL/mL. Fluorescence measurements, possible due to the fluorescent properties of pyoverdine, the siderophore synthesized by this bacterium, evidenced stimulatory effect of magnetite low concentrations. Further test was based on the response of other two bacteria to the pyoverdine obtained by thermolisis of Pseudomonas cultures. The antimicrobial effect of pyoverdine against several strains of Sarcina lutea and Staphylococcus aureus (clinical isolates from hospital patients) was amplified following the treatment with magnetic nanoparticles – though no distinct correlation with the magnetic nanoparticle concentration could be emphasized.Fluorescence measurements, possible due to the fluorescent properties of pyoverdine, the siderophore synthesized by this bacterium, evidenced stimulatory effect of magnetite low concentrations. Further test was based on the response of other two bacteria to the pyoverdine obtained by thermolisis of Pseudomonas cultures. The antimicrobial effect of pyoverdine against several strains of Sarcina lutea and Staphylococcus aureus (clinical isolates from hospital patients) was amplified following the treatment with magnetic nanoparticles – though no distinct correlation with the magnetic nanoparticle concentration could be emphasized. |
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