Resistance to beta-lactam antibiotics

Cellular and Molecular Life Sciences : CMLS
K Poole

Abstract

beta-lactams have a long history in the treatment of infectious diseases, though their use has been and continues to be confounded by the development of resistance in target organisms. beta-lactamases, particularly in Gram-negative pathogens, are a major determinant of this resistance, although alterations in the beta-lactam targets, the penicillin-binding proteins (PBPs), are also important, especially in Gram-positive pathogens. Mechanisms for the efflux and/or exclusion of these agents also contribute, though often in conjunction these other two. Approaches for overcoming these resistance mechanisms include the development of novel beta-lactamase-stable beta-lactams, beta-lactamase inhibitors to be employed with existing beta-lactams, beta-lactam compounds that bind strongly to low-affinity PBPs and agents that potentiate the activity of existing beta-lactams against low-affinity PBP-producing organisms.

Citations

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