In: Antimicrobial Agents and Chemotherapy, 2016, vol. 60, no. 5, p. 3032–3040
The species Acinetobacter baumannii is one of the most important multidrug-resistant human pathogens. To determine its virulence and antibiotic resistance determinants, the genome of the nosocomial blaNDM-1-positive A. baumannii strain R2090 originating from Egypt was completely sequenced. Genome analysis revealed that strain R2090 is highly related to the...
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In: Journal of Antimicrobial Chemotherapy, 2015, vol. 70, no. 1, p. 98-102
To decipher the mechanisms and their associated genetic determinants responsible for β-lactam resistance in a Proteus mirabilis clinical isolate.Methods: The entire genetic structure surrounding the β-lactam resistance genes was characterized by PCR, gene walking and DNA sequencing.Results: Genes encoding the carbapenemase NDM-1 and the ESBL VEB-6 were located in a 38.5 kb MDR structure,...
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In: Antimicrobial Agents and Chemotherapy, 2016, vol. 59, no. 12, p. 7420–7425
An Enterobacter cloacae isolate was recovered from a rectal swab from a patient hospitalized in France with previous travel to Switzerland. It was resistant to penicillins, narrow- and broad-spectrum cephalosporins, aztreonam, and carbapenems but remained susceptible to expanded-spectrum cephalosporins. Whereas PCR-based identification of the most common carbapenemase genes failed, the...
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In: South African Medical Journal, 2016, vol. 106, no. 5, p. 449–450
The polymyxin antibiotic colistin is an antibiotic of last resort for the treatment of extensively drug-resistant Gram-negative bacteria, including carbapenemase- producing Enterobacteriaceae. The State of the World’s Antibiotics report in 2015 highlighted South Africa (SA)’s increasing incidence of these ‘superbugs’ (3.2% of Klebsiella pneumoniae reported from SA were carbapenemase...
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In: Antimicrobial Resistance and Infection Control, 2016, vol. 4, p. 9
The emergence and worldwide spread of carbapenemase-producing Enterobacteriaceae is of great concern to public health services. The aim of this study was to investigate the occurrence of carbapenemase-producing Enterobacteriaceae in the community in Switzerland.Findings: One thousand and eighty-six stool samples of healthy humans (staff members of a food-processing company which were screened...
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In: Genome Announcements, 2016, vol. 3, no. 5, p. e01008-15
Acinetobacter baumannii is an emerging human pathogen causing nosocomial and community-acquired infections. Here, we present the complete genome sequence of the clinical A. baumannii strain R2090 carrying the metallo-β-lactamase gene blaNDM-1 in its chromosome within the transposon Tn125.
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In: Antimicrobial Agents and Chemotherapy, 2016, vol. 60, no. 5, p. 3199–3201
An extended-spectrum β-lactamase (ESBL)-producing and colistin-resistant Klebsiella pneumoniae clinical isolate was recovered from a patient who was treated with cefotaxime. This isolate harbored a blaCTX-M-15 ESBL gene that was associated with an ISEcp1 insertion sequence. Transposition of that tandem occurred within the chromosomal mgrB gene, leading...
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In: Journal of Clinical Microbiology, 2016, vol. 54, no. 5, p. 1395–1399
The colistin-containing SuperPolymyxin medium was developed for screening polymyxin-resistant Gram-negative bacteria. It was evaluated with 88 polymyxin- susceptible or polymyxin-resistant cultured Gram-negative isolates. Its sensitivity and specificity of detection were ca. 100%. The SuperPolymyxin medium is the first screening medium that is able to detect intrinsic and acquired...
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In: Antimicrobial Agents and Chemotherapy, 2016, vol. 60, no. 1, p. 151–160
The origin of carbapenem-hydrolyzing metallo-β-lactamases (MBLs) acquired by clinical bacteria is largely unknown. We investigated the frequency, host range, diversity, and functionality of MBLs in the soil microbiota. Twenty-five soil samples of different types and geographical origins were analyzed by antimicrobial selective culture, followed by phenotypic testing and expression of...
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In: International Journal of Antimicrobial Agents, 2016, vol. 47, no. 1, p. 102–103
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