Identifying Spectra of Activity and Therapeutic Niches for Ceftazidime-Avibactam and Imipenem-Relebactam against Carbapenem-Resistant Enterobacteriaceae. 2017

Ghady Haidar, and Cornelius J Clancy, and Liang Chen, and Palash Samanta, and Ryan K Shields, and Barry N Kreiswirth, and M Hong Nguyen
University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.

We determined imipenem, imipenem-relebactam, ceftazidime, and ceftazidime-avibactam MICs against 100 CRE isolates that underwent whole-genome sequencing. Klebsiella pneumoniae carbapenemases (KPCs) were the most common carbapenemases. Forty-six isolates carried extended-spectrum β-lactamases (ESBLs). With the addition of relebactam, imipenem susceptibility increased from 8% to 88%. With the addition of avibactam, ceftazidime susceptibility increased from 0% to 85%. Neither imipenem-relebactam nor ceftazidime-avibactam was active against metallo-β-lactamase (MBL) producers. Ceftazidime-avibactam (but not imipenem-relebactam) was active against OXA-48-like producers, including a strain not harboring any ESBL. Major OmpK36 porin mutations were independently associated with higher imipenem-relebactam MICs (P < 0.0001) and showed a trend toward independent association with higher ceftazidime-avibactam MICs (P = 0.07). The presence of variant KPC-3 was associated with ceftazidime-avibactam resistance (P < 0.0001). In conclusion, imipenem-relebactam and ceftazidime-avibactam had overlapping spectra of activity and niches in which each was superior. Major OmpK36 mutations in KPC-K. pneumoniae may provide a foundation for stepwise emergence of imipenem-relebactam and ceftazidime-avibactam resistance.

UI MeSH Term Description Entries
D007711 Klebsiella pneumoniae Gram-negative, non-motile, capsulated, gas-producing rods found widely in nature and associated with urinary and respiratory infections in humans. Bacillus pneumoniae,Bacterium pneumoniae crouposae,Hyalococcus pneumoniae,Klebsiella pneumoniae aerogenes,Klebsiella rhinoscleromatis
D008826 Microbial Sensitivity Tests Any tests that demonstrate the relative efficacy of different chemotherapeutic agents against specific microorganisms (i.e., bacteria, fungi, viruses). Bacterial Sensitivity Tests,Drug Sensitivity Assay, Microbial,Minimum Inhibitory Concentration,Antibacterial Susceptibility Breakpoint Determination,Antibiogram,Antimicrobial Susceptibility Breakpoint Determination,Bacterial Sensitivity Test,Breakpoint Determination, Antibacterial Susceptibility,Breakpoint Determination, Antimicrobial Susceptibility,Fungal Drug Sensitivity Tests,Fungus Drug Sensitivity Tests,Sensitivity Test, Bacterial,Sensitivity Tests, Bacterial,Test, Bacterial Sensitivity,Tests, Bacterial Sensitivity,Viral Drug Sensitivity Tests,Virus Drug Sensitivity Tests,Antibiograms,Concentration, Minimum Inhibitory,Concentrations, Minimum Inhibitory,Inhibitory Concentration, Minimum,Inhibitory Concentrations, Minimum,Microbial Sensitivity Test,Minimum Inhibitory Concentrations,Sensitivity Test, Microbial,Sensitivity Tests, Microbial,Test, Microbial Sensitivity,Tests, Microbial Sensitivity
D002442 Ceftazidime Semisynthetic, broad-spectrum antibacterial derived from CEPHALORIDINE and used especially for Pseudomonas and other gram-negative infections in debilitated patients. Ceftazidime Anhydrous,Ceftazidime Pentahydrate,Fortaz,Fortum,GR-20263,LY-139381,Pyridinium, 1-((7-(((2-amino-4-thiazolyl)((1-carboxy-1-methylethoxy)imino)acetyl)amino)-2-carboxy-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-en-3-yl)methyl)-, inner salt, pentahydrate, (6R-(6alpha,7beta(Z)))-,Tazidime,GR 20263,GR20263,LY 139381,LY139381
D004338 Drug Combinations Single preparations containing two or more active agents, for the purpose of their concurrent administration as a fixed dose mixture. Drug Combination,Combination, Drug,Combinations, Drug
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000073182 Carbapenem-Resistant Enterobacteriaceae Strains of Enterobacteriaceae that are resistant to CARBAPENEMS, primarily due to the acquisition of carbapenemase (BETA-LACTAMASE) genes. Carbapenemase-Producing Enterobacteriaceae
D000900 Anti-Bacterial Agents Substances that inhibit the growth or reproduction of BACTERIA. Anti-Bacterial Agent,Anti-Bacterial Compound,Anti-Mycobacterial Agent,Antibacterial Agent,Antibiotics,Antimycobacterial Agent,Bacteriocidal Agent,Bacteriocide,Anti-Bacterial Compounds,Anti-Mycobacterial Agents,Antibacterial Agents,Antibiotic,Antimycobacterial Agents,Bacteriocidal Agents,Bacteriocides,Agent, Anti-Bacterial,Agent, Anti-Mycobacterial,Agent, Antibacterial,Agent, Antimycobacterial,Agent, Bacteriocidal,Agents, Anti-Bacterial,Agents, Anti-Mycobacterial,Agents, Antibacterial,Agents, Antimycobacterial,Agents, Bacteriocidal,Anti Bacterial Agent,Anti Bacterial Agents,Anti Bacterial Compound,Anti Bacterial Compounds,Anti Mycobacterial Agent,Anti Mycobacterial Agents,Compound, Anti-Bacterial,Compounds, Anti-Bacterial
D001426 Bacterial Proteins Proteins found in any species of bacterium. Bacterial Gene Products,Bacterial Gene Proteins,Gene Products, Bacterial,Bacterial Gene Product,Bacterial Gene Protein,Bacterial Protein,Gene Product, Bacterial,Gene Protein, Bacterial,Gene Proteins, Bacterial,Protein, Bacterial,Proteins, Bacterial
D001618 beta-Lactamases Enzymes found in many bacteria which catalyze the hydrolysis of the amide bond in the beta-lactam ring. Well known antibiotics destroyed by these enzymes are penicillins and cephalosporins. beta-Lactamase,beta Lactamase,beta Lactamases
D015378 Imipenem Semisynthetic thienamycin that has a wide spectrum of antibacterial activity against gram-negative and gram-positive aerobic and anaerobic bacteria, including many multiresistant strains. It is stable to beta-lactamases. Clinical studies have demonstrated high efficacy in the treatment of infections of various body systems. Its effectiveness is enhanced when it is administered in combination with CILASTATIN, a renal dipeptidase inhibitor. Imipemide,N-Formimidoylthienamycin,Imipenem Anhydrous,Imipenem, Anhydrous,MK-0787,MK0787,Anhydrous Imipenem,Anhydrous, Imipenem,MK 0787,N Formimidoylthienamycin

Related Publications

Ghady Haidar, and Cornelius J Clancy, and Liang Chen, and Palash Samanta, and Ryan K Shields, and Barry N Kreiswirth, and M Hong Nguyen
November 2021, International journal of antimicrobial agents,
Ghady Haidar, and Cornelius J Clancy, and Liang Chen, and Palash Samanta, and Ryan K Shields, and Barry N Kreiswirth, and M Hong Nguyen
December 2023, Microbiology spectrum,
Ghady Haidar, and Cornelius J Clancy, and Liang Chen, and Palash Samanta, and Ryan K Shields, and Barry N Kreiswirth, and M Hong Nguyen
September 2019, Antimicrobial agents and chemotherapy,
Ghady Haidar, and Cornelius J Clancy, and Liang Chen, and Palash Samanta, and Ryan K Shields, and Barry N Kreiswirth, and M Hong Nguyen
October 2016, Clinical infectious diseases : an official publication of the Infectious Diseases Society of America,
Ghady Haidar, and Cornelius J Clancy, and Liang Chen, and Palash Samanta, and Ryan K Shields, and Barry N Kreiswirth, and M Hong Nguyen
January 2023, Antibiotics (Basel, Switzerland),
Ghady Haidar, and Cornelius J Clancy, and Liang Chen, and Palash Samanta, and Ryan K Shields, and Barry N Kreiswirth, and M Hong Nguyen
May 2024, Antibiotics (Basel, Switzerland),
Ghady Haidar, and Cornelius J Clancy, and Liang Chen, and Palash Samanta, and Ryan K Shields, and Barry N Kreiswirth, and M Hong Nguyen
May 2023, Antibiotics (Basel, Switzerland),
Ghady Haidar, and Cornelius J Clancy, and Liang Chen, and Palash Samanta, and Ryan K Shields, and Barry N Kreiswirth, and M Hong Nguyen
September 2023, The Journal of antibiotics,
Ghady Haidar, and Cornelius J Clancy, and Liang Chen, and Palash Samanta, and Ryan K Shields, and Barry N Kreiswirth, and M Hong Nguyen
September 2023, Acta microbiologica et immunologica Hungarica,
Ghady Haidar, and Cornelius J Clancy, and Liang Chen, and Palash Samanta, and Ryan K Shields, and Barry N Kreiswirth, and M Hong Nguyen
September 2022, The Journal of antimicrobial chemotherapy,
Copied contents to your clipboard!