Results 21 to 30 of about 13,550 (188)

Molecular mechanisms responsible KPC-135-mediated resistance to ceftazidime-avibactam in ST11-K47 hypervirulent Klebsiella pneumoniae

Emerging Microbes and Infections
Ceftazidime-avibactam resistance attributable to the blaKPC-2 gene mutation is increasingly documented in clinical settings. In this study, we characterized the mechanisms leading to the development of ceftazidime-avibactam resistance in ST11-K47 ...
Qingyu Shi, Siquan Shen, Chengkang Tang, Li Ding, Yan Guo, Yang Yang, Shi Wu, Renru Han, Dandan Yin, Fupin Hu   +9 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

Within-host co-evolution of KPC variants: plasmid-mediated dissemination of blaKpc-194 and blaKpc-33 in ST11-KL64 hypervirulent Klebsiella pneumoniae driving ceftazidime-avibactam resistance [PDF]

Microbiology Spectrum
KPC variants are the primary cause of treatment failure in patients with Klebsiella pneumoniae infections. This study reports the molecular mechanism by which two novel KPC variants (KPC-194 and KPC-33), isolated from a single patient, mediate resistance
Li Ding, Xiangbing Wu, Qiang Xie, Liting Liu, Bingshao Liang, Siquan Shen, Yan Guo, Jing Chen, Fupin Hu   +8 more
doaj   +2 more sources

Acetylcysteine increases sensitivity of ceftazidime-avibactam–resistant enterobacterales with different enzymatic resistance to ceftazidime-avibactam in vitro and in vivo

BMC Microbiology, 2023
Abstract Background Ceftazidime-avibactam (CZA) improves treatment outcomes for infections caused by carbapenem-resistant organisms, but has led to serious bacterial resistance. Acetylcysteine (NAC) is an approved medication that protects the respiratory tract through antioxidant and anti-inflammatory effects.
Zeyu Huang, Yijia Han, Xiaotuan Zhang, Yao Sun, Yuzhan Lin, Luozhu Feng, Tieli Zhou, Zhongyong Wang   +7 more
openaire   +3 more sources

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

Development of Resistance to Eravacycline by Klebsiella pneumoniae and Collateral Sensitivity-Guided Design of Combination Therapies

Microbiology Spectrum, 2022
The evolution of bacterial antibiotic resistance is exhausting the list of currently used antibiotics and endangers those in the pipeline. The combination of antibiotics is a promising strategy that may suppress resistance development and/or achieve ...
Congjuan Xu, Xiaoya Wei, Yongxin Jin, Fang Bai, Zhihui Cheng, Shuiping Chen, Xiaolei Pan, Weihui Wu   +7 more
doaj   +1 more source

Susceptibility of clinical Enterobacterales and Pseudomonas aeruginosa isolates to ceftazidimeavibactam in Russia: multicenter local laboratory databased surveillance [PDF]

Клиническая микробиология и антимикробная химиотерапия, 2021
Objective. To assess the in vitro activity of ceftazidime-avibactam against clinical Enterobacterales and Pseudomonas aeruginosa isolates in various regions of Russia based on results of local susceptibility testing by disk diffusion method. Materials
Edelstein M.V., Skleenova E.Yu., Trushin I.V., Kuzmenkov A.Yu., Martinovich А.А., Shek E.A., Shajdullina E.R., Avramenko A.A., Vinogradova A.G., Ivanchik N.V., Sukhorukova M.V., Romanov A.V., Mikotina A.V., Azyzov I.S., Dekhnich A.V., Kozlov R.S., cazavi   +16 more
doaj   +1 more source

A Ceftazidime-Avibactam-Resistant and Carbapenem-Susceptible Klebsiella pneumoniae Strain Harboring bla_KPC-14 Isolated in New York City

mSphere, 2020
Ceftazidime-avibactam is a potent antibiotic combination against Klebsiella pneumoniae carbapenemase (KPC)-producing Enterobacteriaceae. Here, we describe a unique ceftazidime-avibactam-resistant and carbapenem-susceptible K.
Siqiang Niu, Kalyan D. Chavda, Jie Wei, Chunhong Zou, Steven H. Marshall, Puneet Dhawan, Deqiang Wang, Robert A. Bonomo, Barry N. Kreiswirth, Liang Chen   +9 more
doaj   +3 more sources

In Vitro and In Vivo Evaluations of β-Lactam/β-Lactamase Mono- and Combined Therapies against Carbapenem-Nonsusceptible Enterobacteriaceae in Taiwan

Microorganisms, 2020
Increasing carbapenem resistance rates worldwide underscored the urgent need of novel antimicrobials. Ceftazidime–avibactam and aztreonam–avibactam combinations are developed to combat carbapenem resistance, but biological and geographic variations must ...
Tsung-Ying Yang, Ya-Ju Hsieh, Li-Ting Kao, Guan-Hong Liu, Shao-Hsuan Lian, Liang-Chun Wang, I-Ling Lin, Yu-Tzu Lin, Sheng-Fan Wang, Sung-Pin Tseng, Po-Liang Lu   +10 more
doaj   +1 more source

DataSheet1_Ceftazidime-Avibactam Therapy Versus Ceftazidime-Avibactam-Based Combination Therapy in Patients With Carbapenem-Resistant Gram-Negative Pathogens: A Meta-Analysis.docx

, 2021
Objective: To systematically review and compare the efficacy and posttreatment resistance of ceftazidime-avibactam therapy and ceftazidime-avibactam-based combination therapy in patients with Gram-negative pathogens.Methods: PubMed, Embase, Web of ...
Xiangning Huang (5216384), Shanshan Long (1783180), Hao Zhou (136535), Jie Zhang (64655), Dan Li (106345), Fan Fei (1368924), Hua Yu (138267)   +6 more
core   +1 more source