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- W2124667152 abstract "In previous studies, delivery of a liquid preparation of encapsulated tobramycin in fluid liposomes, called Fluidosomes, has showed a marked improvement in the bactericidal activity against in-vitro and in-vivo extracellular infections. To examine the possibility of developing aerosol treatment using dehydrated Fluidosomes for the treatment of chronic pulmonary infections, freeze-dried preparations of tobramycin and Fluidosomes were tested against cultures of Pseudomonas aeruginosa, Stenotrophomonas maltophilia, Burk-holderia cepacia, Escherichia coli and Staphylococcus aureus. Bacterial colonies were enumerated 0, 1, 3, 6 and 16 h after the addition of the antibiotic. Sixteen hours post-treatment, the growth of P. aeruginosa, S. maltophilia, B. cepacia and E. coli in the presence of sub-minimal inhibitory concentrations of tobramycin was significantly lowered respectively by 17 (P < 0.01), 40 (P < 0.001), 47 (P < 0.001), and 50 (P < 0.001) times in comparison with growth in the presence of free antibiotic. No improvement was observed against 5. aureus. Results obtained in this study suggest that: 1) the dehydrated form of liposomal antibiotic maintains the ability to increase penetration of the antibiotic in gram negative bacterial cells; 2) the development of aerosolization methods to administer dehydrated liposomes associated with high concentrations of antibiotic could be a practical and efficient way of treating chronic pulmonary infections caused by resistant bacteria." @default.
- W2124667152 created "2016-06-24" @default.
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- W2124667152 date "1999-01-01" @default.
- W2124667152 modified "2023-10-13" @default.
- W2124667152 title "In Vitro Bactericidal Evaluation of a Low Phase Transition Temperature Liposomal Tobramycin Formulation as a Dry Powder Preparation Against Gram Negative and Gram Positive Bacteria" @default.
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- W2124667152 doi "https://doi.org/10.3109/08982109909018652" @default.
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