- |||||||||| Zavicefta (ceftazidime/avibactam) / Pfizer, AbbVie
Retrospective data, Journal: Emergence of Hypervirulent ST11-K64 Klebsiella pneumoniae Poses a Serious Clinical Threat in Older Patients. (Pubmed Central) - Apr 29, 2022 In conclusion, higher MICs of the last line antibiotic agents (ceftazidime-avibactam, tigecycline) might be a critical consideration in the clinical management of older patients where the concentration of these toxic antibiotics matters because of underlying comorbidities. Caution regarding KPC-2-producing ST11-K64 CR-hvKP as being new significant "superbugs" is required as they are widespread, and infection control measures should be strengthened to curb further dissemination in nosocomial settings in China.
- |||||||||| PK/PD data, Review, Journal: Microbiological, Clinical, and PK/PD Features of the New Anti-Gram-Negative Antibiotics: β-Lactam/β-Lactamase Inhibitors in Combination and Cefiderocol-An All-Inclusive Guide for Clinicians. (Pubmed Central) - Apr 24, 2022
Considering the complexity of summarizing and integrating the emerging literature data of clinical outcomes, microbiological mechanisms, and pharmacokinetic/pharmacodynamic properties of the new BL/BLI and cefiderocol, we aimed to provide an overview of data on the following compounds: aztreonam/avibactam, cefepime/enmetazobactam, cefepime/taniborbactam, cefepime/zidebactam, cefiderocol, ceftaroline/avibactam, ceftolozane/tazobactam, ceftazidime/avibactam, imipenem/relebactam, meropenem/nacubactam and meropenem/vaborbactam. Each compound is described in a dedicated section by experts in infectious diseases, microbiology, and pharmacology, with tables providing at-a-glance information.
- |||||||||| imipenem/relebactam / Merck (MSD)
Journal: Successful Treatment of Bloodstream Infection due to a KPC-Producing Klebsiella Pneumoniae Resistant to Imipenem/Relebactam in a Hematological Patient. (Pubmed Central) - Apr 24, 2022 Although treatment with CAZ-AVI and gentamicin completely eradicated the infection due KPC-Kp cross-resistance to IMI-REL and MER-VAB, the patient became colonized subsequently by KPC-Kp strains susceptible to IMI-REL and MER-VAB...Phylogenetic analysis demonstrated that KPC-Kp cross-resistance to IMI-REL and MER-VAB was clonally related to a KPC-Kp resistant to IMI-REL as previously described, demonstrating the spread of this multidrug resistant clone in the hematological unit. In conclusion, the results presented in this study reported the emergence of cross-resistance to MER-VAB and IMI-REL in a KPC-Kp strain isolated from a hematological patient and highlight the potential development and diffusion of new multidrug resistance traits.
- |||||||||| Zavicefta (ceftazidime/avibactam) / Pfizer, AbbVie
Journal: Evaluation of the EUCAST Rapid Antimicrobial Susceptibility Test for Enterobacterales-Containing Blood Cultures in China. (Pubmed Central) - Apr 23, 2022 In addition, we developed potential breakpoints for a recently introduced antimicrobial, 30/20 μg ceftazidime-avibactam, which has high potential for treating multidrug-resistant Enterobacterales...The breakpoints developed in this study can categorize the isolates sampled in this study with an accuracy of 93%. Results from our experiments can be applied to clinically determine the microbial susceptibility of BSI-causing bacteria within 8 h and benefit clinical diagnostics for BSI patients.
- |||||||||| Journal: Carbapenemase producing Klebsiella pneumoniae: implication on future therapeutic strategies. (Pubmed Central) - Apr 22, 2022
Conventionally used antibiotics (polymyxins, tigecycline, aminoglycosides, etc.) are associated with poor efficacy and toxicity profiles are quite worrisome...A review of novel β-lactam/β-lactamase inhibitors (BLI) recently approved and in clinical development as well as cefiderocol, eravacycline and apramycin are discussed...Ceftazidime-avibactam, meropenem-vaborbactam, and imipenem-cilastatin-relebactam are novel agents with favorable outcome and associated with improved mortality in KPC-producing K. pneumoniae infections...Novel BLI in later stage of development i.e., aztreonam-avibactam, cefepime-zidebactam, cefepime-taniborbactam and meropenem-nacubactam as well as cefiderocol are active in vitro against both KPC and MBL. Potential expectations of future therapeutic strategies are improved potency against CPKP, more tolerable safety profile and capability of overcoming current resistance mechanism of multidrug-resistant K. pneumoniae.
- |||||||||| Journal: Impact of Acquired Broad-Spectrum β-Lactamases on Susceptibility to Cefiderocol and Newly Developed β-Lactam/β-Lactamase Inhibitor Combinations in Escherichia coli and Pseudomonas aeruginosa. (Pubmed Central) - Apr 22, 2022
The ability of broad-spectrum β-lactamases to reduce the susceptibility to ceftazidime-avibactam (CZA), ceftolozane-tazobactam (C/T), imipenem-relebactam, meropenem-vaborbactam, aztreonam-avibactam (AZA), and cefiderocol (FDC) was evaluated both in Pseudomonas aeruginosa and in Escherichia coli using isogenic backgrounds. Although metallo-β-lactamases conferred resistance in most cases, except for AZA, several clavulanic-acid-inhibited extended-spectrum β-lactamases (PER, BEL, SHV) had a significant impact on the susceptibility to CZA, C/T, and FDC.
- |||||||||| Zavicefta (ceftazidime/avibactam) / Pfizer, AbbVie
Journal: Structural Characterization of the D179N and D179Y Variants of KPC-2 β-Lactamase: Ω-Loop Destabilization as a Mechanism of Resistance to Ceftazidime-Avibactam. (Pubmed Central) - Apr 22, 2022 To understand why the β-lactamase inhibitor vaborbactam is less affected by the D179 variants than avibactam, we determined the crystal structure of D179N KPC-2 in complex with vaborbactam, which revealed wild-type KPC-2-like vaborbactam-active site interactions. Overall, the structural results regarding KPC-2 D179 variants revealed various degrees of destabilization of the Ω loop that contribute to ceftazidime-avibactam resistance, possible substrate-assisted catalysis of ceftazidime, and meropenem and meropenem-vaborbactam susceptibility.
- |||||||||| Zavicefta (ceftazidime/avibactam) / Pfizer, AbbVie
Journal: Rapid Desensitization after a Type I Hypersensitivity Reaction to Ceftazidime/ Avibactam. (Pubmed Central) - Apr 22, 2022 Drug desensitization procedures are useful for patients with adverse drug reactions in which optimal alternatives are not available. This is the first case report demonstrating a successful rapid induction of tolerance for the antibiotic ceftazidime/avibactam.
- |||||||||| Zavicefta (ceftazidime/avibactam) / Pfizer, AbbVie
Clinical, Journal: When More is Still Not Enough: A Case of Ceftazidime-Avibactam Resistance in a Burn Patient. (Pubmed Central) - Apr 19, 2022 Repeat blood cultures demonstrated a multidrug resistant (MDR) Pseudomonas with a minimum inhibitory concentration (MIC) to ceftazidime-avibactam of 16mcg/mL, which is above the Clinical and Laboratory Standards Institute (CLSI) breakpoint of 8mcg/mL. At first, resistance was thought to have occurred due to inadequate dosing, but genetic work demonstrated multiple genes encoding beta-lactamases.
- |||||||||| Zavicefta (ceftazidime/avibactam) / Pfizer, AbbVie
Retrospective data, Journal: Analysis of the clinical application of ceftazidime-avibactam in China. (Pubmed Central) - Apr 15, 2022 Our results showed that ceftazidime-avibactam might be a potencial choice for the MDR-GNB infections. However, further research are still needed to identify its efficacy and safety in the real world.
- |||||||||| amikacin/fosfomycin inhalation (AFIS) / Savara, Zavicefta (ceftazidime/avibactam) / Pfizer, AbbVie
Journal: Prediction of Prognosis in Adult Patients With Carbapenem-Resistant Klebsiella pneumoniae Infection. (Pubmed Central) - Apr 6, 2022 Tigecycline improved the treatment efficiency in 7 days, but a trend toward increased mortality was seen (HR, 1.69; 95% CI: 0.98-2.94; P = 0.061). The antimicrobial regimen efficacy data and the predictive nomogram established in this study can help clinicians in identifying high-risk adult patients with CRKP infection, improving the therapeutic effect, and reducing mortality.
- |||||||||| Zerbaxa (ceftolozane /tazobactam) / Merck (MSD), Zavicefta (ceftazidime/avibactam) / Pfizer, AbbVie
Review, Journal: Global Threat of Carbapenem-Resistant Gram-Negative Bacteria. (Pubmed Central) - Apr 5, 2022 Ceftazidime-avibactam is a last-resort antibiotic against GNB of Ambler class A/C/D enzyme-producers and a majority of CR-P...Furthermore, ceftolozane-tazobactam is shown to exhibit excellent in vitro activity against CR- and XDR-P...baumannii complex isolates. In this era of antibiotic pipelines, strict implementation of antibiotic stewardship is as important as in-time isolation cohorts in limiting the spread of CR/XDR-GNB and alleviating the worsening trends of resistance.
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