Results 51 to 60 of about 82,122 (259)

Identification of a Staphylococcus aureus transposon (Tn4291) that carries the methicillin resistance gene(s) [PDF]

Journal of Bacteriology, 1988
We isolated a transposon (Tn4291) that carries the resistance gene(s) for methicillin in a secondary insertion site on the penicillinase plasmid pI524. Transposition of Tn4291 into pI524 occurred during the transduction of the tetracycline resistance plasmid pSN1 from a methicillin-resistant donor into a recipient that carried the mec allele in the ...
D L, Trees, J J, Iandolo
openaire   +2 more sources

Targeting a Myeloid–Regulatory B Cell Network Reverses Immune Paralysis in Periprosthetic Joint Infections

Advanced Science, EarlyView.
Periprosthetic joint infection establishes a sophisticated immunosuppressive network between CXCR4+ PMN‐MDSCs and Bregs, inducing profound CD8+ T cell paralysis. Alendronate effectively disrupts this CXCR4+ PMN‐MDSC–Breg axis by targeting STAT3, thereby restoring local immune surveillance.
Jintao Wu, Shutao Zhang, Yumin Lin, Juyang Jiao, Zhiwei Fu, Qimin Hong, Ziyi Zhao, Xinhua Qu, Fei Su, Bing Yue   +9 more
wiley   +1 more source

Enhanced Antibacterial Properties of Lyotropic Liquid Crystalline Nanoparticles via Curvature Modulation

Advanced Science, EarlyView.
Lipid nanostructured particles with increasing negative Gaussian curvature progress from vesicles to P‐cubosomes and D‐cubosomes. This curvature hierarchy enhances interaction with bacterial membranes, promotes membrane remodeling and leakage, and potentiates daptomycin activity against MRSA.
Xiangfeng Lai, Shuhong Wang, Chenguang Ding, Xenia Kostoulias, Anton P. Le Brun, Hsien‐Yi Hsu, Jhih‐Hang Jiang, Yajun Wang, Richard A. Strugnell, Anton Y. Peleg, Hsin‐Hui Shen   +10 more
wiley   +1 more source

Oxacillin magnetically targeted for the treatment of Methicillin-Resistant S. aureus infection in rats [PDF]

Acta Cirurgica Brasileira, 2017
To evaluate the effect of oxacillin bonded to magnetic nanoparticles in local infection model in rat.Twelve Wistar rats weighing 290±18g were randomly divided into four groups (n=6, each) and all rats had a magnet ring sutured on their right thighs.
Carriço, Artur da Silva, Carvalho, Juliana Fernandes, Azevedo, Ítalo Medeiros, Rocha, Keyla Borges Ferreira, Medeiros, Aldo Cunha   +4 more
openaire   +6 more sources

Two‐Dimensional Conjugated Metal Organic Frameworks with Dual Metal Catalytic Active Sites Enhance POD Activity for Antibacterial Treatment

Advanced Science, EarlyView.
A new class of Cu, Ni bimetallic 2D cMOF (CuNi‐HHTP 2D cMOF) featuring dual catalytic sites and high delocalized electronic structure for boosting POD performance. The CuNi‐HHTP 2D‐cMOF enhances the conversion kinetics of H2O2 to ROS, which subsequently enhances antibacterial activity and accelerates the healing of oral ulcers, with macroscopic wound ...
Yixuan Lu, Qinqin Li, Yumin Chen, Shihan Zhang, Shuai Ding, Yanpei Wang, Youxing Liu, Yaru Guo, Xuliang Deng, Shaojun Guo   +9 more
wiley   +1 more source

Chemoenzymatic Radiosynthesis of a Gluconate Transporter‐Targeted In Vivo Bacterial Sensor From Clinical [18F]FDG

Angewandte Chemie, EarlyView.
An efficient radiosynthesis of fluorine‐18 labeled gluconic acid ([18F]FGA) was developed using two readily available materials, 2‐deoxy‐2‐[18F]fluoro‐D‐glucose ([18F]FDG) and glucose oxidase. [18F]FGA is highly specific for bacterial gluconate metabolism mediated by gluconate permease (GntP) and gluconate kinase (GntK), with rapid clearance, low off ...
Sang Hee Lee, Jung Min Kim, Joseph Blecha, Robert R. Flavell, Michael A. Ohliger, Joanne Engel, Youngho Seo, David M. Wilson   +7 more
wiley   +2 more sources

Harmonizing Rigidity and Flexibility: Embedding COF Quantum Dots Into Extracellular Matrix Gel as Carbon Monoxide Depot for Acoustically Triggered Time‐Programmable Anti‐Infective Therapy

Advanced Science, EarlyView.
A rigid‑flexible integrated CO depot is engineered by embedding rigid COFQDs into a flexible ECM gel network. The rigid framework enables high‑capacity CO storage and sonodynamic bacterial killing, while the flexible ECM gel controls sustained CO release, collectively eradicating multidrug‑resistant infection and promoting scarless healing.
Baohong Sun, Fang Han, Chunxiao Zhu, Zhiyuan Yang, Haoru Wang, Jinpei Mei, Jie Chen, Jingwen Zhu, Zihan Bo, Taju Wu, Xiaogang Zhou, Tao Ma, Yutian Su, Youhui Lin   +13 more
wiley   +1 more source

Repression of Virulence in Staphylococcus aureus by 2‐Aminothiol‐Mediated Quorum Quenching

Angewandte Chemie, EarlyView.
Simple analogues of cysteine that can eliminate the native autoinducing peptides (AIPs) of staphylococci extracellularly, before they activate their receptor, and turn off quorum sensing in different Staphylococcus aureus. The elimination of AIPs occurs through a mechanism similar to native chemical ligation (NCL). Further, this strategy showed promise
Bengt H. Gless, Riccardo Milazzo, Martin S. Bojer, Benjamin S. Sereika‐Bejder, Hanne Ingmer, Christian A. Olsen   +5 more
wiley   +2 more sources

Methicillin-resistant Staphylococcus aureus contamination and distribution in patient’s care environment at Muhimbili National Hospital, Dar es Salaam-Tanzania

BMC Research Notes, 2018
Objective Environmental contamination with methicillin-resistant Staphylococcus aureus in routine medical care settings poses an increased risk of health care associated infections through cross-transmission. This study aimed at determining the magnitude
Emmanuel James Nkuwi, Fatima Kabanangi, Agricola Joachim, Sima Rugarabamu, Mtebe Majigo   +4 more
doaj   +1 more source

Pyrazole‐Derived Antibacterial Compounds Effectively Treat Methicillin‐Resistant Staphylococcus Aureus Infections by Inhibiting Aspartate Transcarbamoylase

Advanced Science, EarlyView.
This study unveils a novel antibacterial mechanism against MRSA, in which the compound Py‐27 selectively targets and inhibits aspartate transcarbamoylase (ATCase), a key enzyme in pyrimidine synthesis. This inhibition disrupts DNA replication, induces oxidative damage, leading to potent bactericidal activity.
Xiaorong Yang, Xinyuan Cao, Lixia Dai, Feng Yang, Jing Wang, Yudong Ma, Tong Bu, Zile Gong, Xueyan Liu, Changcai Bai, Xiaolou Miao, Xiaofei Shang   +11 more
wiley   +1 more source