J Bacteriol 1947, 53:83–88 PubMed 49 Landy M, Warren GH, et al :

J Bacteriol 1947, 53:83–88.PubMed 49. Landy M, Warren GH, et al.: Bacillomycin; an antibiotic from Bacillus subtilis active against pathogenic fungi. Proc Soc Exp Biol Med 1948, 67:539–541.PubMedCrossRef 50. Vater J, Gao X, Hitzeroth G, Wilde C, Franke P: “Whole cell”–matrix-assisted laser desorption ionization-time of flight-mass spectrometry, an emerging technique for efficient screening of biocombinatorial libraries of natural compounds-present state of research. Comb Chem High Throughput Screen 2003, 6:557–567.PubMedCrossRef 51. Lounatmaa K, Makela HP, Sarvas M: Effect of polymyxin on the ultrastructure

of the outer membrane of wild Type and polymyxin- resistant strains of Salmonella . J Bacteriol 1976, 127:1400–1407.PubMed Crenolanib Competing interests The authors declare that they have no competing interests. Authors’ contributions BN carried out the main experiments, data analysis and wrote a manuscript draft. JV performed the mass spectrometric and chemical analysis and revised the manuscript. CR carried out the genome sequencing and assembling. XHC participated in experimental selleck chemical design and revised the manuscript. JB provided genome sequence database support. ML performed the SEM observation.

JJR participated in the manual annotation of the genome sequence. QW guided experimental design. RB guided experimental design, performed data analysis and annotation and wrote the final version of the manuscript. BAY 73-4506 price FAD All authors read and approved the final manuscript.”
“Background Pseudomonas aeruginosa is a non-fermenting Gram-negative bacterium that is widely distributed in nature. The minimum nutritional requirements, tolerance to a wide variety of physical conditions and intrinsic resistance against many antibiotics explain its role as an important nosocomial pathogen. Certain bacterial clones have been distributed worldwide and, in most cases, associated with multiresistance patterns [1–3]. Because the number of active antibiotics against P.

aeruginosa is limited, it is a priority to perform a strict and regular follow up of the resistance patterns in individual hospitals. In the microbiology laboratory of the Hospital Son Llàtzer (Mallorca, Spain) the number of isolates of P. aeruginosa is increasing annually. In 2010, the number of isolates of P. aeruginosa was 1174, being the second pathogen isolated after Escherichia coli. When the P. aeruginosa resistance pattern of the P. aeruginosa isolates from this hospital were compared with the latest Spanish surveillance study of antimicrobial resistance [4], it was revealed that the resistance levels of the isolates in our hospital were higher against all of the antibiotics commonly used in the treatment of infections caused by P. aeruginosa, contributing to therapeutic difficulties. The introduction of molecular techniques has led to significant progress in both bacterial identification and typing. In P.

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