نتایج جستجو برای: β lactam resistance

تعداد نتایج: 546701  

2014
Gulcan Sahal Isil Seyis Bilkay

Staphylococcus epidermidis which exists in healthy human skin as a commensal inhabitant is also an important pathogen forming biofilms on many surfaces and recently, increased resistance traits were suggested to be acquired in biofilm environments. In this study; clinical Prevalences, antibiotic resistances and biofilm formations of S. epidermidis strains were determined and comparison of all t...

2016
Marta Toth Nuno Tiago Antunes Nichole K. Stewart Hilary Frase Monolekha Bhattacharya Clyde Smith Sergei Vakulenko

Production of β-lactamases of one of four molecular classes (A, B, C and D) is the major mechanism of bacterial resistance to β-lactams, the largest class of antibiotics, which have saved countless lives since their inception 70 years ago. Although several hundred efficient class D enzymes have been identified in Gram-negative pathogens over the last four decades, none have been reported in Gra...

2014
I. Yusuf A.H. Arzai M. Haruna A.A. Sharif M.I. Getso

Two major hospitals in Kano, North West Nigeria have recorded increasing resistance of clinical pathogens to broad spectrum β lactams, mediated by extended spectrum β-lactamase (ESβL) and non ESBLs. A study was therefore undertaken to determine the occurrence and prevalence of plasmid and chromosomal mediated AmpC βL and carbapenemase in addition to already known ESBL due to increasing resistan...

2011
Jitendra Vashist Vishvanath Tiwari Rituparna Das Arti Kapil Moganty R. Rajeswari

BACKGROUND & OBJECTIVES Acinetobacter baumannii is a Gram-negative, cocco-bacillus aerobic pathogen responsible for nosocomial infections in hospitals. In the recent past A. baumannii had developed resistance against β-lactams, even against carbapenems. Penicillin-binding proteins (PBPs) are crucial for the cell wall biosynthesis during cell proliferation and these are the target for β-lactams....

Journal: :Journal of Antimicrobial Chemotherapy 1982

Journal: :Antibiotics 2023

The presence of antibiotic residues in water is linked to the emergence resistance globally and necessitates novel decontamination strategies minimize residue exposure both environment food. A holistic assessment cold atmospheric pressure plasma technology (CAPP) for β-lactam removal described this study. CAPP operating parameters including jet voltage, gas composition treatment time were optim...

2015
Nadine Händel Sarah Otte Martijs Jonker Stanley Brul Benno H. ter Kuile

The spread of antibiotic resistant bacteria worldwide presents a major health threat to human health care that results in therapy failure and increasing costs. The transfer of resistance conferring plasmids by conjugation is a major route by which resistance genes disseminate at the intra- and interspecies level. High similarities between resistance genes identified in foodborne and hospital-ac...

2013
Eugene A Yurtsev Hui Xiao Chao Manoshi S Datta Tatiana Artemova Jeff Gore

Inactivation of β-lactam antibiotics by resistant bacteria is a 'cooperative' behavior that may allow sensitive bacteria to survive antibiotic treatment. However, the factors that determine the fraction of resistant cells in the bacterial population remain unclear, indicating a fundamental gap in our understanding of how antibiotic resistance evolves. Here, we experimentally track the spread of...

2017
Adam J. Schaenzer Nathan Wlodarchak David H. Drewry William J. Zuercher Warren E. Rose Rob Striker John-Demian Sauer

Bacterial signaling systems such as protein kinases and quorum sensing have become increasingly attractive targets for the development of novel antimicrobial agents in a time of rising antibiotic resistance. The family of bacterial Penicillin-binding-protein And Serine/Threonine kinase-Associated (PASTA) kinases is of particular interest due to the role of these kinases in regulating resistance...

رستگار لاری, عبدالعزیز, رهبر, محمد, ستارزاده, محبوبه, سلیمان‌زاده مقدم, سمیه, عالی‌نژاد, فرانک, عظیمی, لیلا, محمد‌زاده, مونا,

Background: The increasing use of β-lactam antibiotics in clinics for the treatment of different bacterial infections since early 1980s has led to increased rates of resistant bacteria isolated from patients. One of the problems in the treatment of nosocomial infections is related to resistant bacteria such as Enterobacter cloacae due to cross resistance through extended-spectrum beta-lactamase...

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