Novel CuO/Ag nanocomposites added zeolite (CAZ) were successfully fabricated, and their effectiveness as an antibacterial on S. aureus and MB removal was evaluated. EDX, XRD, and FTIR confirm the presence of the elemental compositions of CAZ. Friable CuO nanorods (10-70 nm in diameter) existed on the surface of the zeolite. Pure zeolite had a higher band gap (5.433 eV) and lower MB removal efficiency than CAZ. The adsorption method by CAZ was more effective at removing MB than photodegradation. 0.10 CAZ had the highest removal effectiveness (~ 99%) and adsorption capacity (~ 70.4 mg g) of MB. The inhibitory zone diameter for 0.005 CAZ against S. aureus was 20 mm, while 0.01 CAZ had a diameter of 17 mm. Azithromycin, ceftriaxone, and erythromycin antibiotics demonstrated lower or no efficacy against S. aureus than CAZ. Significant antibacterial activities and wastewater treatment were achieved by CAZ. The combination of photodegradation and adsorption enhanced pollutant removal. It will be interesting to study further the optimal molar ratio for MB removal (0.10 CAZ) in future investigations.
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http://dx.doi.org/10.1038/s41598-023-40790-6 | DOI Listing |
Cureus
November 2024
Department of Physical Therapy, Dammam Medical Complex, Dammam, SAU.
Multidrug-resistant (MDR) Pseudomonas aeruginosa presents a significant treatment challenge, necessitating effective antimicrobial options. This retrospective, single-center cohort study was conducted at Dammam Medical Complex and aimed to evaluate the comparative effectiveness and safety of ceftazidime-avibactam (CAZ-AVI), ceftolozane-tazobactam (C-T), and meropenem and colistin in treating MDR P. aeruginosa infections.
View Article and Find Full Text PDFDiagn Microbiol Infect Dis
December 2024
Department of Pharmacy, The First Affiliated Hospital of Soochow University, Suzhou, China. Electronic address:
Objectives: To evaluate the rationality of the clinical use of ceftazidime-avibactam (CAZ-AVI) for carbapenem-resistant Klebsiella pneumoniae (CRKP) infections in a real-world setting.
Methods: We established the rational evaluation criteria based on drug instructions and relevant guidelines to retrospectively evaluate the use of CAZ-AVI to treat CRKP infections from June 2020 to June 2023 in a tertiary hospital in China. Patients were divided into the rational use group and irrational use group.
Int J Antimicrob Agents
December 2024
Department of Critical Care Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, No. 324 Jingwu Road, Jinan, 250021, Shandong, People's Republic of China. Electronic address:
Background And Aim: Comparative studies of Ceftazidime/avibactam(CAZ/AVI) versus polymyxin B (PMB) for carbapenem-resistant organisms (CRO) infections are limited. We aims to compare the efficacy and safety of CAZ/AVI and PMB in treating CRO infections.
Methods: This single-center, propensity score-matched (PSM) retrospective cohort study involved adult patients with CRO infections.
Microb Pathog
February 2025
Laboratory of Applied Microbiology and Cancer Remedies, School of Life Sciences, Jawaharlal Nehru University, New Delhi, 110067, India. Electronic address:
Associated with nosocomial infections, the environmental Gram-negative coccobacillus A. baumannii leads to various kinds of high mortality-rate infections among which pneumonias mainly in immune-compromised people from health-care facilities. A critical component of the current antibiotic resistance problem is the presence of antibiotics sub-minimum inhibitory concentrations (sub-MICs) in a variety of natural settings including drinking water, sewage water, rivers, lakes, and natural sludge.
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