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See detailMetallo-beta-lactamases as emerging resistance determinants in Gram-negative pathogens: open issues
Cornaglia, G.; Akova, M.; Amicosante, G. et al

in International Journal of Antimicrobial Agents (2007), 29(4), 380-388

The rapid spread of acquired metallo-beta-lactamases (MBLs) among major Gram-negative pathogens is a matter of particular concern worldwide and primarily in Europe, one of first continents where the ... [more ▼]

The rapid spread of acquired metallo-beta-lactamases (MBLs) among major Gram-negative pathogens is a matter of particular concern worldwide and primarily in Europe, one of first continents where the emergence of acquired MBLs has been reported and possibly the geographical area where the increasing diversity of these enzymes and the number of bacterial species affected are most impressive. This spread has not been paralleled by accuracy/standardisation of detection methods, completeness of epidemiological knowledge or a clear understanding of what MBL production entails in terms of clinical impact, hospital infection control and antimicrobial chemotherapy. A number of European experts in the field met to review the current knowledge on this phenomenon, to point out open issues and to reinforce and relate to one another the existing activities set forth by research institutes, scientific societies and European Union-driven networks. (c) 2006 Elsevier B.V. and the International Society of Chemotherapy. All rights reserved. [less ▲]

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See detailPenicillin-binding proteins. Wall peptidoglycan assembly and resistance to penicillin: facts, doubts and hopes
Ghuysen, Jean-Marie ULg; Charlier, Paulette ULg; Coyette, Jacques ULg et al

in International Journal of Antimicrobial Agents (1997), 8(1), 45-60

As the protein sequence and structure databases expand, the relationships between proteins, the notion of protein superfamily, and the driving forces of evolution are better understood. Key steps of the ... [more ▼]

As the protein sequence and structure databases expand, the relationships between proteins, the notion of protein superfamily, and the driving forces of evolution are better understood. Key steps of the synthesis of the bacterial cell wall peptidoglycan are revisited in light of these advances. The reactions through which the D-alanyl-D-alanine depeptide is formed, utilized, and hydrolyzed and the sites of action of the glycopeptide and β-lactam antibiotics illustrate the concept according to which new enzyme functions evolve as a result of tinkering of existing proteins. This occurs by the acquisition of local structural changes, the fusion into mul-timodular polypeptides, and the association into multiprotein complexes. [less ▲]

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