Results 11 to 20 of about 21,820 (216)

In Vitro Activities of Ceftazidime–Avibactam and Aztreonam–Avibactam at Different Inoculum Sizes of Extended-Spectrum β-Lactam-Resistant Enterobacterales Blood Isolates

Antibiotics, 2021
β-lactam–avibactam combinations have been proposed as carbapenem-sparing therapies, but little data exist on their in vitro activities in infections with high bacterial inocula.
Moonsuk Bae, Taeeun Kim, Joung Ha Park, Seongman Bae, Heungsup Sung, Mi-Na Kim, Jiwon Jung, Min Jae Kim, Sung-Han Kim, Sang-Oh Lee, Sang-Ho Choi, Yang Soo Kim, Yong Pil Chong   +12 more
doaj   +2 more sources

Colistin Does Not Potentiate Ceftazidime-Avibactam Killing of Carbapenem-Resistant Enterobacteriaceae In Vitro or Suppress Emergence of Ceftazidime-Avibactam Resistance [PDF]

Antimicrobial Agents and Chemotherapy, 2018
We tested ceftazidime-avibactam and colistin against 24 carbapenem-resistant Enterobacteriaceae (CRE) isolates by time-kill studies. Ceftazidime-avibactam at 0.25×, 1×, and 4× the MIC was bactericidal against 8%, 21%, and 88% of the isolates, respectively.
Ryan K, Shields, M Hong, Nguyen, Binghua, Hao, Ellen G, Kline, Cornelius J, Clancy   +4 more
openaire   +3 more sources

In Vitro Evaluation of Increasing Avibactam Concentrations on Ceftazidime Activity against Ceftazidime/Avibactam-Susceptible and Resistant KPC-Producing Klebsiella pneumoniae Clinical Isolates [PDF]

Antibiotics, 2023
The novel β-lactam/β-lactamase inhibitor combinations (βL-βLICs) are one of the last-line resources available against multidrug-resistant (MDR) Gram-negative bacteria.
Marta Palombo, Benedetta Secci, Federica Bovo, Milo Gatti, Simone Ambretti, Paolo Gaibani   +5 more
doaj   +2 more sources

Review of Ceftazidime-Avibactam for the Treatment of Infections Caused by Pseudomonas aeruginosa

Antibiotics, 2021
Pseudomonas aeruginosa is an opportunistic Gram-negative pathogen that causes a range of serious infections that are often challenging to treat, as this pathogen can express multiple resistance mechanisms, including multidrug-resistant (MDR) and ...
George L. Daikos, Clóvis Arns da Cunha, Gian Maria Rossolini, Gregory G. Stone, Nathalie Baillon-Plot, Margaret Tawadrous, Paurus Irani   +6 more
doaj   +2 more sources

Emergence of Ceftazidime-Avibactam-Induced KPC Variants (KPC-25/127) in Intracranial Infection and Implications for Clinical Management. [PDF]

Microbiologyopen
Novel KPC‐25 and first‐reported KPC‐127 sequentially evolved in one patient under CAZ‐AVI pressure, distinct mutations remodel enzyme activity to drive differential multidrug resistance. ABSTRACT The emergence of novel Klebsiella pneumoniae carbapenemase (KPC) variants contributing to clinical treatment failure poses a substantial threat to public ...
Lei K, Tian Y, Xiong C, Lei J, Chen D, Bai X, Abdul-Aziz MH, Xie J, Liu Z.   +8 more
europepmc   +2 more sources

Successful Rapid Desensitization to Ceftazidime/Avibactam in a Patient With Cystic Fibrosis and Multidrug-Resistant <i>Pseudomonas aeruginosa</i> Pneumonia: A Case Report. [PDF]

Clin Case Rep
ABSTRACT Ceftazidime/avibactam (CAZ‐AVI) is an important therapeutic option for multidrug‐resistant (MDR) Pseudomonas aeruginosa infections; however, hypersensitivity reactions may preclude its use and create significant therapeutic challenges. We report a 21‐year‐old woman with cystic fibrosis and recurrent MDR P.
Zhou Z, Zhu J, Wu G, Kang X, Wang Q, Liu J, Jiang Y.   +6 more
europepmc   +2 more sources

In-Vitro Selection of Ceftazidime/Avibactam Resistance in OXA-48-Like-Expressing Klebsiella pneumoniae: In-Vitro and In-Vivo Fitness, Genetic Basis and Activities of β-Lactam Plus Novel β-Lactamase Inhibitor or β-Lactam Enhancer Combinations

Antibiotics, 2021
Ceftazidime/avibactam uniquely demonstrates activity against both KPC and OXA-48-like carbapenemase-expressing Enterobacterales. Clinical resistance to ceftazidime/avibactam in KPC-producers was foreseen in in-vitro resistance studies.
Snehal Palwe, Yamuna Devi Bakthavatchalam, Kshama Khobragadea, Arun S. Kharat, Kamini Walia, Balaji Veeraraghavan   +5 more
doaj   +1 more source

Increased gene expression and copy number of mutated bla KPC lead to high-level ceftazidime/avibactam resistance in Klebsiella pneumoniae

BMC Microbiology, 2021
Background Resistance to ceftazidime-avibactam was reported, and it is important to investigate the mechanisms of ceftazidime/avibactam resistance in K. pneumoniae with mutations in bla KPC. Results We report the mutated bla KPC is not the only mechanism
Lingxiao Sun, Haibo Li, Qi Wang, Yingmei Liu, Bin Cao   +4 more
doaj   +1 more source

Evaluation of ceftazidime/avibactam alone and in combination with amikacin, colistin and tigecycline against Klebsiella pneumoniae carbapenemase-producing K. pneumoniae by in vitro time-kill experiment.

PLoS ONE, 2021
Klebsiella pneumoniae carbapenemase-producing K. pneumoniae (KPC-Kp) poses a major threat to human health worldwide. Combination therapies of antibiotics with different mechanisms have been recommended in literatures.
Fangzhou Wang, Qian Zhou, Xiuwen Yang, Yan Bai, Junchang Cui   +4 more
doaj   +1 more source

In vitro activity of ceftazidime-avibactam against clinical isolates of Enterobacterales and Pseudomonas aeruginosa from sub-Saharan Africa: ATLAS Global Surveillance Program 2017–2021

Journal of Global Antimicrobial Resistance, 2023
: Objectives: To report the in vitro susceptibility of Enterobacterales (n = 3905) and Pseudomonas aeruginosa (n = 1,109) isolates, collected from patients in sub-Saharan Africa (four countries) in 2017–2021, to a panel of 10 antimicrobial agents with a
Mark G. Wise, James A. Karlowsky, Meredith A. Hackel, Mohamed Amine Harti, Bontle M.E. Ntshole, Eva Njeri Njagua, Rita Oladele, Catherine Samuel, Shameema Khan, Jeannette Wadula, Warren Lowman, Busisani W. Lembede, Daniel F. Sahm   +12 more
doaj   +1 more source