Results 61 to 70 of about 1,201,054 (248)

Probing the Role of Asn 152 in the Class C β-lactamase AmpC [PDF]

, 2012
AmpC, a class C β-lactamase, is a main cause of antibiotic resistance to cephalosporins in many species of bacteria. The current proposed mechanism of action involves an acyl-intermediate, where the enzyme becomes covalently attached to the drug at ...
Powers, Rachel, Leonard, David, Anwar, Mujahid, Docter, Brianne, Wallar, Bradley   +4 more
core  

Visible‐Light‐Mediated Lewis Acid‐Catalyzed Diradical Hydrogen Atom Transfer Reaction of Enamides

Advanced Science, EarlyView.
The Lewis acid catalysis was crucial for the success of the DHAT reaction of enamides by lowering the energy of the triplet excited state and modulating the reactivity of the formed diradical intermediate in a carbon‐to‐carbon 1,5‐DHAT and consequent cyclization that allows the functionalization of C(sp3)−H bonds to construct a variety of novel β ...
Yao Huang, Baoyu Yang, Xiang Zhou, Israel Fernández, Kexue Xia, Yang Xiong   +5 more
wiley   +1 more source

Optimierung und Evaluierung von Enzymimmuntests zum Nachweis von Cephalosporin-Antibiotika in Milch [PDF]

, 2012
Die vorliegende Arbeit befasst sich mit der Entwicklung von monoklonalen Antikörpern (mAk) zum Nachweis verschiedener relevanter Cephalosporin-Rückstände.
Bremus, Anna Caroline
core   +1 more source

Rapid Multiplex Antimicrobial Resistance Profiling and Bacterial Identification by LAP‐MALDI Mass Spectrometry Biotyping

Advanced Science, EarlyView.
Liquid atmospheric pressure matrix‐assisted laser desorption/ionization (LAP‐MALDI) mass spectrometry (MS) provides multiplexed biotyping of microbial cultures using a fast and simple workflow. This is demonstrated for clinically relevant bacteria, resulting in accurate antimicrobial resistance (AMR) detection, speciation by MS/MS sequencing and ...
Lily R. Adair, Shabnam Iyer, Ian M. Jones, Rainer Cramer   +3 more
wiley   +1 more source

β-lactam Antibiotics used for this study.

, 2015
β-lactam Antibiotics used for this study.
Kristina Crona (567679), Bernd Sturmfels (73407), Portia M. Mira (735579), Miriam Barlow (197488), Juan C. Meza (735580), Devin Greene (567678)   +5 more
core   +1 more source

Long Noncoding RNA PCALRx Interacts with Pyruvate Carboxylase to Drive Multi‐Organ Developmental Toxicity in Zebrafish Embryos Exposed to Amoxicillin

Advanced Science, EarlyView.
Embryonic amoxicillin exposure disrupts multi‐organ development in zebrafish larvae through a lncRNA–metabolic enzyme regulatory axis. PCALRx associates with pyruvate carboxylase, promotes PC protein ubiquitination, and impairs mitochondrial energy metabolism, while vitamin B1 partially restores PC‐centered metabolic function and developmental outcomes.
Yixue Yao, Ping Jiang, Xinli Zhou, Mengying Yin, Qiong Luo, Hui Wang   +5 more
wiley   +1 more source

Artificial Intelligence‐Guided Phenotypic Drug Repurposing Against Streptococcus pneumoniae

Advanced Science, EarlyView.
Integrated artificial intelligence (AI) ensembles identify highly potent repurposed drugs against Streptococcus pneumoniae. Prospective virtual screening of 6747 drugs uncovers nine active candidates, including thiostrepton. This drug exhibits low picomolar potency and bypasses established resistance in multidrug‐resistant strains, demonstrating an ...
Joshua S. Fitch, Muhammad D. Ariadi, Min Jung Kwun, Leonie Howells, Saiveth Hernandez‐Hernandez, Nicholas J. Croucher, Pedro J. Ballester   +6 more
wiley   +1 more source

Structural Basis of Shiga Toxin Neutralization by Human Antibodies Targeting Canonical Receptor‐Binding and Non‐Canonical Assembly Sites

Advanced Science, EarlyView.
Cryo‐electron microscopy structures reveal two distinct neutralization mechanisms of fully human monoclonal antibodies targeting the Shiga toxin 1a B subunit. RDS059 occludes the Gb3 receptor‐binding site, whereas RDS045 engages a lateral quaternary epitope to disrupt holotoxin assembly.
Jianting Ke, Xin Li, Xiaoli Wang, Zhaoxia Huang, Shaojie Xue, Yuyang Liu, Jing Pan, Guowei Hu, Yayu Wang, Cheng Wang, Shoudeng Chen   +10 more
wiley   +1 more source

A novel method to depurate β-lactam antibiotic residues by administration of a broad-spectrum β-lactamase enzyme in fish tissues

Fisheries and Aquatic Sciences, 2016
As a novel strategy to remove β-lactam antibiotic residues from fish tissues, utilization of β-lactamase, enzyme that normally degrades β-lactam structure-containing drugs, was explored.
Young-Sik Choe, Ji-Hoon Lee, Soo-Geun Jo, Kwan Ha Park   +3 more
doaj   +1 more source

Rewriting Tumor Immunity With Bacterial Membrane Vesicles: A Versatile and Potent Therapeutic Strategy

Advanced NanoBiomed Research, EarlyView.
Bacterial membrane vesicles (BMVs) emerge as promising platforms for cancer immunotherapy owing to their intrinsic adjuvant properties and tunable cargo delivery capabilities. Their ability to modulate the tumor microenvironment, enhance antitumor immune responses, and support personalized therapeutic strategies highlights their growing potential as ...
Md Sifat Rahi, Md Mijanur Rahman, Asma Talukder, Urooj Yousaf Virk, Jennifer C. Wilson, Nigel McMillan, Ming Q. Wei   +6 more
wiley   +1 more source