Article
Infectious Diseases
Alix Pantel, Oriane Nachar, Agathe Boudet, Paul Loubet, Sophie Schuldiner, Nicolas Cellier, Albert Sotto, Catherine Dunyach-Remy, Jean-Philippe Lavigne
Summary: This study evaluated the in vitro activity of dalbavancin on a panel of Gram-positive bacteria responsible for DFOM and found that dalbavancin showed excellent activity against all strains, demonstrating the most potent in vitro activity among the antimicrobial agents tested. Dalbavancin appears to be a promising treatment for DFOM involving Gram-positive bacteria due to its efficacy, tolerability, and unique pharmacokinetic properties.
JOURNAL OF ANTIMICROBIAL CHEMOTHERAPY
(2021)
Article
Microbiology
Sanjay V. V. Menghani, Yamil Sanchez-Rosario, Chansorena Pok, Renshuai Liu, Feng Gao, Henrik O'Brien, Miranda J. J. Neubert, Klariza Ochoa, Meredythe Durckel, Riley D. D. Hellinger, Nadia Hackett, Wei Wang, Michael D. L. Johnson
Summary: Despite the availability of vaccines against several strains of Streptococcus pneumoniae, the rise of antimicrobial resistance and emergence of uncovered strains necessitates the development of new antimicrobial strategies. N,N-dimethyldithiocarbamate (DMDC) has been identified as a potent copper-dependent antimicrobial against various pathogens, including S. pneumoniae. Derivatives of DMDC, particularly Compound 3, show promise as effective antibiotics against relevant streptococcal pathogens, reducing bacterial burden in an in vivo murine pneumonia model.
FRONTIERS IN MICROBIOLOGY
(2023)
Review
Engineering, Environmental
Meera Varghese, Manoj Balachandran
Summary: CDs, known for their nontoxic characteristics and inherent antibacterial potency, have gained significant attention as potential alternative antibiotics due to the increasing antibiotic resistance of bacterial strains. The light-driven antibacterial action of CDs is safe and effective with minimal side effects, and their direct interaction with bacterial cells contributes to their overall antibacterial activity. The unique and complex mechanisms of antibacterial activity of CDs involve ROS generation, degeneration of cell structure, and cytoplasm leakage, among other factors, providing insights for significant future research in this area.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Microbiology
Jingyuan Xi, Peiyao Jia, Ying Zhu, Wei Yu, Jingjia Zhang, Haotian Gao, Wei Kang, Ge Zhang, Jin Li, Tong Wang, Yingchun Xu, Qiwen Yang
Summary: The study in China revealed that the main pathogens of Gram-negative bacteria bloodstream infections were Enterobacteriaceae, with Escherichia coli being the most common pathogen. Klebsiella pneumonia, Pseudomonas aeruginosa, Acinetobacter baumannii, and Enterobacter cloacae showed high resistance rates to multiple antibiotics. Polymyxin B and colistin have become crucial agents in combating infections caused by multidrug-resistant Gram-negative bacteria.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Engineering, Environmental
Junke Zhang, Peidong Su, Huihuang Chen, Meng Qiao, Bo Yang, Xu Zhao
Summary: The hydroxyl radical-dominated electrochemical process is a highly efficient, environmentally friendly, and byproduct-free disinfection technology. Gram-positive and Gram-negative bacteria show different responses in the OH-dominated disinfection system, including variations in disinfection efficiency, sublethal injury, and subcellular damage. The coexistence of E. coli and S. aureus inhibits their disinfection efficiencies. The cell wall and cell outer membrane play a crucial role in the resistance to OH-dominated disinfection, with S. aureus exhibiting higher resistance due to its thick and stable structure of peptidoglycan.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Infectious Diseases
Patrycja Zalas-Wiecek, Malgorzata Prazynska, Lukasz Pojnar, Anna Palka, Dorota Zabicka, Monika Orczykowska-Kotyna, Aleksandra Polak, Barbara Mozejko-Pastewka, Ewa Anna Glowacka, Izabela Pieniazek, Malgorzata Pawlik, Maciej Grys, Monika Bogiel
Summary: This study evaluated the activity of ceftazidime/avibactam and other commonly used antibiotics against Enterobacterales and Pseudomonas aeruginosa strains isolated in Poland in recent years. The results showed that ceftazidime/avibactam demonstrated the highest activity against Enterobacterales strains and also had high activity against Pseudomonas aeruginosa strains.
INFECTION AND DRUG RESISTANCE
(2022)
Article
Chemistry, Applied
Yuanyuan Wang, Yang Xue, Qianqian Bi, Dingkui Qin, Qizhen Du, Peng Jin
Summary: The study demonstrated that ECL-NPs have significant antibacterial efficiency against gram-positive bacteria, with the synergistic effect of low-dose lysozyme enhancing their inhibitory effects. Scanning electron microscopy showed that ECL-NPs could completely break down the cellular structures of bacteria, while 100% microbial inhibition was observed in fresh fruits treated with ECL-NPs for 15 days.
Article
Chemistry, Medicinal
Chao Zhong, Fangyan Zhang, Ningyi Zhu, Yuewen Zhu, Jia Yao, Sanhu Gou, Junqiu Xie, Jingman Ni
Summary: The new ultra-short lipopeptides demonstrate selectivity to bacterial membranes, low cytotoxicity, synergistic antimicrobial activity with antibiotics against resistant bacteria, rapid killing kinetics, strong anti-biofilm ability, and significant anti-inflammatory effects in vivo. These lipopeptides are considered as novel antimicrobial alternatives for combating the imminent crisis of antimicrobial resistance.
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
(2021)
Article
Infectious Diseases
Mar de Pablo-Miro, Sergi Pujol-Ruiz, Simona Iftimie, Maria del Mar Arenas-Miras, Inmaculada Lopez-Montesinos, Xavier Duran-Jorda, Albert Angles, Santiago Grau, Juan P. Horcajada
Summary: Dalbavancin, a new antibiotic effective against Gram-positive microorganisms, offers the possibility of weekly IV therapy in outpatient setting. A case-control study showed that Dalbavancin treatment reduced hospital stay and improved 30-day efficacy compared to other antibiotics.
Article
Chemistry, Multidisciplinary
Kefurong Deng, Yachao Li, Xiaoyu Liang, Cheng Shen, Zenan Zeng, Xianghui Xu
Summary: This study developed virus-inspired nanodrugs for high-efficiency antibiotic delivery and enhanced antibacterial effects, demonstrating their potential application in antibacterial treatment.
CHINESE CHEMICAL LETTERS
(2022)
Article
Biotechnology & Applied Microbiology
Himanshi Singh, Avinash Gahane, Virender Singh, Shreya Ghosh, Ashwani Thakur
Summary: Biofilm associated infections are a major cause of mortality in patients with bacterial infections. Fmoc-F and other Fmoc-AA molecules exhibit anti-biofilm activity by inhibiting biofilm formation and attachment. The potential application of these molecules as anti-biofilm coating material for treating biofilm associated infections is demonstrated in this study.
JOURNAL OF ANTIBIOTICS
(2021)
Article
Microbiology
Ryan Waite, Candace T. Adams, David R. Chisholm, C. H. Cole Sims, Joshua G. Hughes, Eva Dias, Emily A. White, Kathryn Welsby, Stanley W. Botchway, Andrew Whiting, Gary J. Sharples, Carrie A. Ambler
Summary: The emergence of antibiotic resistance poses a growing threat to human health, and the search for alternatives is urgent. A new fluorescent photoactivatable diarylacetylene has been discovered, showing a preference for eliminating Gram-positive bacteria. Experimental evidence suggests that the outer surface of Gram-negative bacteria and oxidative damage repair pathways affect the sensitivity and antibacterial activity of this compound. This new finding holds promise for the treatment of skin infections.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Multidisciplinary Sciences
Aliya Fazal, Sajida Ara, Muhammad Tayab Ishaq, Kalsoom Sughra
Summary: The study focuses on the green synthesis of copper oxide nanoparticles using vegetable peels, with an ecofriendly approach and low fabrication temperature. It also explores the antibacterial efficacy of the nanoparticles, showing a more significant biocidal effect on Gram-negative bacteria compared to Gram-positive bacteria. The research highlights the potential of utilizing biowaste for the production of useful products.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2022)
Article
Biotechnology & Applied Microbiology
Sarabjot Kaur, Rushikesh Tambat, Vikas Pathania, Hemraj Nandanwar, Sanjeev Soni
Summary: This study demonstrates that photo-thermally enhanced triangular silver nanoplates have strong antimicrobial efficacy and can eradicate various pathogens in a short period of time, which is significant for a wide range of antibacterial and antifungal applications.
JOURNAL OF APPLIED MICROBIOLOGY
(2022)
Article
Chemistry, Medicinal
Emma van Groesen, Cornelis J. Slingerland, Paolo Innocenti, Milos Mihajlovic, Rosalinde Masereeuw, Nathaniel Martin
Summary: Vancomycin binds to lipid II to exert its antimicrobial effect, but cannot pass through the outer membrane of Gram-negative bacteria. Conjugation of vancomycin with OM disrupting PMEN results in hybrid vancomyxins with improved activity against Gram-negative strains and maintained antimicrobial effect against Gram-positive strains. The hybrid antibiotics show reduced nephrotoxicity compared to clinically used polymyxin antibiotics.
ACS INFECTIOUS DISEASES
(2021)
Article
Microbiology
Cecilia G. Carvalhaes, Helio S. Sader, Jennifer M. Streit, Mariana Castanheira, Rodrigo E. Mendes
Summary: According to data from a 10-year study, oritavancin has shown strong activity against Gram-positive pathogens that cause bloodstream infections, and has demonstrated good efficacy against resistant strains of MRSA and Enterococcus.
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY
(2022)
Article
Infectious Diseases
Helio S. Sader, Rodrigo E. Mendes, S. J. Ryan Arends, Cecilia G. Carvalhaes, Mariana Castanheira
Summary: The study evaluated the activity of aztreonam-avibactam against Enterobacterales isolates from European medical centers and the occurrence of carbapenemases. The results showed that aztreonam-avibactam had high inhibitory activity against Enterobacterales isolates and retained potent activity against resistant strains. The study also found that isolates from the Eastern European and Mediterranean region had lower susceptibility to comparator agents compared to isolates from Western Europe.
EUROPEAN JOURNAL OF CLINICAL MICROBIOLOGY & INFECTIOUS DISEASES
(2022)
Article
Infectious Diseases
Helio S. Sader, Rodrigo E. Mendes, Leonard R. Duncan, Cecilia G. Carvalhaes, Mariana Castanheria
Summary: The study evaluated the activity of cefepime/zidebactam against Gram-negative bacteria, showing good efficacy against Enterobacterales and carbapenem-resistant isolates. It demonstrated potential antibiotic effects on a global scale.
JOURNAL OF ANTIMICROBIAL CHEMOTHERAPY
(2022)
Article
Immunology
Cecilia Godoy Carvalhaes, Helio Silva Sader, Paul Richard Rhomberg, Mariana Castanheira, Sean DeVries, Rodrigo Elisandro Mendes
Summary: This study assessed the activity of tedizolid and comparator agents against clinical surveillance isolates collected from pediatric patients with skin and skin structure infection in the United States. The results showed that tedizolid had high inhibitory activity against Staphylococcus aureus and MRSA isolates, and other antibiotics also displayed high susceptibility in different age groups and methicillin resistance profiles.
PEDIATRIC INFECTIOUS DISEASE JOURNAL
(2022)
Article
Infectious Diseases
Helio S. Sader, Mariana Castanheira, Leonard R. Duncan, Rodrigo E. Mendes
Summary: Ceftaroline showed high susceptibility against different types of infections, and it also exhibited good activity against methicillin-resistant strains.
DIAGNOSTIC MICROBIOLOGY AND INFECTIOUS DISEASE
(2023)
Article
Infectious Diseases
Helio S. Sader, Rodrigo E. Mendes, S. J. Ryan Arends, Cecilia G. Carvalhaes, Dee Shortridge, Mariana Castanheira
Summary: This study evaluated the in-vitro activity of several antibiotics against contemporary Pseudomonas aeruginosa isolates and found that ceftazidime-avibactam, ceftolozane-tazobactam, and imipenem-relebactam showed excellent activity against multi-drug resistant strains.
INTERNATIONAL JOURNAL OF ANTIMICROBIAL AGENTS
(2023)
Article
Immunology
Helio S. Sader, Rodrigo E. Mendes, John H. Kimbrough, Valerie Kantro, Mariana Castanheira
Summary: The CLSI lowered the breakpoints for amikacin, gentamicin, and tobramycin, which are commonly used to treat multidrug-resistant Enterobacterales infections. These changes resulted in a reduction in the susceptibility rates of Enterobacterales, particularly against resistant subsets. Plazomicin demonstrated potent activity against antimicrobial-resistant Enterobacterales, including CRE and MDR strains.
OPEN FORUM INFECTIOUS DISEASES
(2023)
Article
Immunology
Helio S. Sader, Rodrigo E. Mendes, Cecilia G. Carvalhaes, John H. Kimbrough, Mariana Castanheira
Summary: As the prevalence of metallo-beta-lactamase (MBL)-producing Enterobacterales is increasing, there is an urgent need for effective antimicrobials. This study evaluated the activity of aztreonam-avibactam against 27,834 Enterobacterales isolates collected from US medical centers. The results showed that aztreonam-avibactam was highly effective, inhibiting over 99.9% of isolates at a concentration of <= 8 mg/L.
OPEN FORUM INFECTIOUS DISEASES
(2023)
Article
Microbiology
A. J. Lepak, M. Trang, J. P. Hammel, H. S. Sader, S. M. Bhavnani, B. D. VanScoy, J. M. Pogue, P. G. Ambrose, D. R. Andes
Summary: STIC using only epidemiological data may not accurately reflect the therapeutic effect of antimicrobial agents against A. baumannii. In this study, a comprehensive evaluation was conducted using in vitro surveillance data, preclinical murine models, and population pharmacokinetics to establish appropriate STIC for commonly recommended antimicrobials.
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY
(2023)
Article
Infectious Diseases
Helio S. Sader, Rodrigo E. Mendes, Leonard Duncan, John H. Kimbrough, Cecilia G. Carvalhaes, Mariana Castanheira
Summary: A total of 35,360 Enterobacterales isolates were collected from US medical centers from 2018 to 2022. Among them, 7.4% were identified as multidrug-resistant (MDR). Susceptibility testing and whole genome sequencing were conducted to determine the resistance profiles and carbapenemase genes. The most active β-lactamase inhibitor combination against carbapenem-resistant Enterobacterales (CRE) isolates was ceftazidime-avibactam, followed by meropenem-vaborbactam and imipenem-relebactam. Ceftazidime-avibactam exhibited greater activity against OXA-48-type producers.
DIAGNOSTIC MICROBIOLOGY AND INFECTIOUS DISEASE
(2023)
Article
Infectious Diseases
Helio S. Sader, Cecilia G. Carvalhaes, Michael D. Huband, Rodrigo E. Mendes, Mariana Castanheira
Summary: We evaluated the in vitro activity of ceftibuten-avibactam against Enterobacterales causing urinary tract infection (UTI). The results showed that ceftibuten-avibactam exhibited high activity against a large collection of multidrug-resistant Enterobacterales isolated from patients with UTI, making it a valuable option for oral treatment of UTI caused by multidrug-resistant Enterobacterales.
EUROPEAN JOURNAL OF CLINICAL MICROBIOLOGY & INFECTIOUS DISEASES
(2023)
Article
Infectious Diseases
Helio S. Sader, Mariana Castanheira, John H. Kimbrough, Valerie Kantro, Rodrigo E. Mendes
Summary: This study evaluated the in vitro activity of aztreonam/avibactam and comparators against carbapenem-resistant Enterobacterales. The results showed that aztreonam/avibactam exhibited high inhibitory activity against most isolates, including those resistant to ceftazidime/avibactam. Additionally, aztreonam/avibactam retained activity against isolates producing MBL and/or OXA-48-like enzymes, supporting its development as a treatment for infections caused by carbapenem-resistant Enterobacterales, including MBL producers.
JAC-ANTIMICROBIAL RESISTANCE
(2023)
Article
Oncology
M. A. Pfaller, R. E. Mendes, H. S. Sader, M. Castanheira, C. G. Carvalhaes
Summary: Oritavancin demonstrated potent activity against clinically relevant Gram-positive pathogens in European hospitals, with minimal differences in minimum inhibitory concentration (MIC) values and varying resistance phenotypes between Eastern and Western Europe.
JOURNAL OF CHEMOTHERAPY
(2023)
Article
Infectious Diseases
Cecilia G. Carvalhaes, Helio S. Sader, Jennifer M. Streit, Rodrigo E. Mendes
Summary: The study evaluated the activity and resistance of tedizolid against different bacteria. The results showed that tedizolid exhibited good antimicrobial activity against Staphylococcus aureus, Enterococcus faecalis, Streptococcus pyogenes, Streptococcus agalactiae, and Streptococcus anginosus group, without any resistance trends.
JAC-ANTIMICROBIAL RESISTANCE
(2022)
Article
Infectious Diseases
Mariana Castanheira, Lalitagauri M. Deshpande, Rodrigo E. Mendes, Timothy B. Doyle, Helio S. Sader
Summary: The study found that Klebsiella pneumoniae serine carbapenemase (KPC) production was the most common resistance mechanism among carbapenem-nonsusceptible Enterobacterales (CNSE) clinical isolates collected in US hospitals during a 5-year period. Ceftazidime/avibactam showed high activity against all carbapenemase groups except for metallo-beta-lactamase (MBL)-producing isolates.
JAC-ANTIMICROBIAL RESISTANCE
(2022)