Results 71 to 80 of about 87,683 (298)

Inhibition of Granulopoiesis in Vivo and in Vitro by β-Lactam Antibiotics [PDF]

, 2017
β-Lactam antibiotics can induce severe neutropenia by a hitherto unknown mechanism. Fifty cases of β-lactam antibiotic-induced neutropenia (15% in patients treated for ⩾10 days with large doses of any β-lactam antibiotic but 95% of cases recovery ...
Hauser, Simon P., Müller, Marianne R., Neftel, Klaus A.   +2 more
core  

Modular Generation of Alkyl Selenyl Radicals for the Synthesis of Alkyl Selenides via a Mechanochemical Approach

Advanced Science, EarlyView.
We present a mechanochemical, radical‐mediated hydroselenation of alkenes under ambient conditions. This method modularly generates alkyl selenyl radicals from elemental selenium and alkyl (pseudo)halides, utilizing PhSiH3 and H2O as hydrogen atom donors, with the water likely originating from the air and/or trace water present in the reagents ...
Xiaochun He, Yu Zhou, Fei Zhou, Zixi Ai, Peiyu Hu, Xuemei Zhang, Xiaofeng Wei, Gui‐Juan Cheng, Zhong Lian   +8 more
wiley   +1 more source

Role of β-Lactamase Inhibitors as Potentiators in Antimicrobial Chemotherapy Targeting Gram-Negative Bacteria

Antibiotics
Since the discovery of penicillin, β-lactam antibiotics have commonly been used to treat bacterial infections. Unfortunately, at the same time, pathogens can develop resistance to β-lactam antibiotics such as penicillins, cephalosporins, monobactams, and
Song Zhang, Xinyu Liao, Tian Ding, Juhee Ahn   +3 more
doaj   +1 more source

Induction of MRSA Biofilm by Low-Dose β-Lactam Antibiotics: Specificity, Prevalence and Dose-Response Effects

Dose-Response, 2014
Methicillin-resistant Staphylococcus aureus (MRSA) is a leading cause of hospital- and community-associated infections. The formation of adherent clusters of cells known as biofilms is an important virulence factor in MRSA pathogenesis.
Mandy Ng, Samuel B. Epstein, Mary T. Callahan, Brian O. Piotrowski, Gary L. Simon, Afsoon D. Roberts, John F. Keiser, Jeffrey B. Kaplan   +7 more
doaj   +1 more source

Comparative Evaluation of the in-vitro Activity of Six β-lactam/β-lactamase Inhibitor Combinations against Gram Negative Bacilli [PDF]

Journal of Clinical and Diagnostic Research, 2013
Background: The extensive use of the β-lactam antibiotics in hospitals and in the community has created major resistance problems which has led to increased morbidity, mortality and healthcare costs.
Smita Sood
doaj   +1 more source

A Genomic Catalog of Migratory Microbiomes from Wild Birds across China's Habitats

Advanced Science, EarlyView.
ABSTRACT Migratory birds play an important role in the spread of antimicrobial resistance (AMR); however, gaps in surveillance data from vital regions along migratory flyways across China limit the detection of emergent threats. Here, we assembled 340 metagenomes from 52 bird species covering 11 provincial administrative districts in China, presenting ...
Yanan Wang, Heqi Wu, Mengqi Qu, Chunge Zhang, Ziqian Xu, Yuhang Pei, Chaochao Zhao, Jiangtao Wang, Sufang Ma, Na Lyu, Xuebin Xu, Yuhai Bi, Baoli Zhu, George F. Gao   +13 more
wiley   +1 more source

Exposure of clinical MRSA heterogeneous strains to β-lactams redirects metabolism to optimize energy production through the TCA cycle. [PDF]

PLoS ONE, 2013
Methicillin-resistant Staphylococcus aureus (MRSA) has emerged as one of the most important pathogens both in health care and community-onset infections. The prerequisite for methicillin resistance is mecA, which encodes a β-lactam-insensitive penicillin
Mignon A Keaton, Roberto R Rosato, Konrad B Plata, Christopher R Singh, Adriana E Rosato   +4 more
doaj   +1 more source

Stabilizing Atomically Dispersed Au With Adjacent Pt for Spatially Precise Molecule Recognition

Advanced Science, EarlyView.
A strategy to stabilize atomically dispersed Au catalysts by introducing Pt atoms into CeO2 supports is presented. Pt incorporation prevents Au aggregation, enhances Au‐O orbital coupling, and enables precise recognition of multi‐functionalized molecules, improving catalytic performance and the structural stability of Au‐based catalysts in ...
Rui Tang, Xiangyu Xiao, Jingyi Yao, Qing Wang, Qijing Gao, Nan Zhou, Fanyi Kong, Dingguan Liang, Kangning Dong, Liang Xiong, Yuwei Cao, Zhendong Lei, Liang Tang   +12 more
wiley   +1 more source

A Dual‐Functional Biohybrid Nanorobot to Synergistically Eradicate Biofilm and Degrade Antibiotic Resistance Genes

Advanced Science, EarlyView.
A biohybrid nanorobot integrating lytic bacteriophage N4 with Pd nanozymes is developed for targeted eradication of multidrug‐resistant E. coli biofilms. Synergistic bacterial lysis and ROS‐mediated oxidation enable simultaneous biofilm removal and antibiotic resistance genes degradation, maintaining high efficacy in complex wastewater environments ...
Junzheng Zhang, Tong Dou, Luokai Wang, Jingxian Yang, Wenrui Wang, Shuaitian Guo, Xiangyu Li, Xuefang Huang, Yunlei Xianyu, Dongsheng Wang   +9 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