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Quaternary ammonium chitosan-functionalized mesoporous silica nanoparticles: A promising targeted drug delivery system for the treatment of intracellular MRSA infection.
Carbohydr Polym
March 2025
Key Laboratory of Biotechnology and Bioresources Utilization of Ministry of Education, College of Life Science, Dalian Minzu University, Dalian 116600, PR China; Department of Bioengineering, College of Life Science, Dalian Minzu University, Dalian 116600, PR China. Electronic address:
The limited membrane permeability and bacterial resistance pose significant challenges in the management of intracellular drug-resistant bacterial infections. To overcome this issue, we developed a bacterial-targeted drug delivery system based on quaternary ammonium chitosan-modified mesoporous silica nanoparticles (MSN-NH-CFP@HACC) for the treatment of intracellular Methicillin-resistant Staphylococcus aureus (MRSA) infections. This system utilizes amino-functionalized mesoporous silica nanoparticles to efficiently load cefoperazone (CFP), and the nanoparticles' surface is coated with 2-hydroxypropyltrimethyl ammonium chloride chitosan (HACC) to target bacteria and enhance macrophage uptake.
View Article and Find Full Text PDFVariable temocillin protein binding and pharmacokinetics in different clinical conditions: Implications for target attainment.
Br J Clin Pharmacol
January 2025
Department of Medical Microbiology, Haaglanden Medisch Centrum, The Hague, The Netherlands.
Aims: The beta-lactam antibiotic temocillin is increasingly used to treat extended-spectrum beta-lactamase (ESBL-producing) strains; however, its protein binding is complex. This study aims to predict unbound temocillin concentrations in various participant groups to determine its impact on the probability of target attainment (PTA) and to improve dosing recommendations.
Methods: The plasma pharmacokinetics were analysed using non-linear mixed-effects modelling.
Antimicrobial Utilization, Adverse Drug Reactions, and Associated Cost of Care in a Tertiary Care Hospital in Eastern India.
Cureus
December 2024
Community Medicine, Kalinga Institute of Medical Sciences, Bhubaneswar, IND.
Background Antimicrobials considerably reduce infectious conditions, but their overuse and misuse contribute to various adverse drug reactions (ADRs) and antimicrobial resistance. In 2019, India adopted a national program to reduce antibiotic resistance for 2019-2021. Assessing antibiotic consumption among the out-patient and in-patient departments is paramount because it is the foundation for implementing and assessing antibiotic stewardship initiatives.
View Article and Find Full Text PDFCombination therapy versus monotherapy: retrospective analysis of antibiotic treatment of enterococcal endocarditis.
BMC Infect Dis
January 2025
Medical Microbiology, Leeds Teaching Hospitals Trust, Leeds, UK.
Background: Guidelines suggest treating fully penicillin-susceptible Enterococcus faecalis strains causing infective endocarditis with amoxicillin combined with gentamicin or ceftriaxone, but clinical evidence to support this practice is limited and monotherapy cohorts were excluded from studies. We describe antibiotic treatment, complications, and outcomes in patients with Enterococcus faecalis infective endocarditis, specifically comparing monotherapy versus combination therapy.
Methods: Retrospective analysis of prospectively collected cohort of patients with definite or possible infective endocarditis from 2 English centres between 2006 and 2021.
Prevalence and genomic insights of carbapenem resistant and ESBL producing Multidrug resistant Escherichia coli in urinary tract infections.
Sci Rep
January 2025
Department of Biotechnology, Faculty of Biomedical Sciences and Technology, Sri Ramachandra Institute of Higher Education and Research (SRIHER), Porur, Chennai, India.
Urinary tract infections are a common condition affecting people globally, with multidrug-resistant (MDR) Escherichia coli (E. coli) being a major causative agent. Antimicrobial susceptibility profiling was performed using the VITEK 2 automated system for 1254 E.
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