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Avibactam
Avibactam is a non-β-lactam β-lactamase inhibitor antibiotic being developed by Actavis jointly with AstraZeneca. A new drug application for avibactam in combination with ceftazidime was approved by the FDA on February 25, 2015, for treating complicated urinary tract and complicated intra-abdominal Infections caused by antibiotic resistant-pathogens, including those caused by multi-drug resistant gram-negative bacterial pathogens. Increasing resistance to cephalosporins among Gram-(-) bacterial pathogens, especially among hospital-acquired infections, results in part from the production of beta lactamase enzymes that deactivate these antibiotics. While the co-administration of a beta lactamase inhibitor can restore antibacterial activity to the cephalorsporin, previously approved beta lactamase inhibitors such as tazobactam and Clavulanic acid do not inhibit important classes of beta lactamase including ''Klebsiella pneumoniae'' carbapenemases (KPCs), metallo-beta lactamases, and AmpC. Avibactam inhibits KPCs, AmpC, and some Class D beta lactamases, but is not active aganist NDM-1. ==References==
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