ANTIMICROBIAL RESISTANCE

A long history of β-lactams for MRSA

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Since the emergence of methicillin-resistant Staphylococcus aureus 60 years ago, scientists have been trying to engineer β-lactam antibiotics to restore drug susceptibility. Genomic data now shows that clavulanic acid (a β-lactamase inhibitor) can restore susceptibility in many strains, but only if they carry key mutations.

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Fig. 1: Evolution of penicillin–clavulanic acid susceptibility.

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Correspondence to Fergus Hamilton.

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