Results 81 to 90 of about 56,729 (249)

Effect of β-lactam antibiotics on the gut microbiota of term neonates

Annals of Clinical Microbiology and Antimicrobials
β-Lactam antibiotics are a class of antibiotics commonly used to treat bacterial infections. However, the effects of β-lactam antibiotics on term neonatal intestinal flora have not been fully elucidated. Hospitalized full-term newborns receiving β-lactam
Hongdan Gu, Enfu Tao, Yijia Fan, Gao Long, Xinyi Jia, Tianming Yuan, Lihua Chen, Xiaoli Shu, Wei Zheng, Mizu Jiang   +9 more
doaj   +1 more source

In vitro activity of cefiderocol against European Enterobacterales, including isolates resistant to meropenem and recentβ-lactam/β-lactamase inhibitor combinations

Microbiology Spectrum
Carbapenem-resistant Enterobacterales represent a major health threat and have few approved therapeutic options. Enterobacterales isolates were collected from hospitalized inpatients from 49 sites in six European countries (1 January–31 December 2020 ...
Anne Santerre Henriksen, Fabio Arena, Marie Attwood, Rafael Canton, Sören Gatermann, Thierry Naas, Ian Morrissey, Christopher Longshaw   +7 more
doaj   +1 more source

Hypericin enhances β-lactam antibiotics activity by inhibiting sarA expression in methicillin-resistant Staphylococcus aureus

Acta Pharmaceutica Sinica B, 2019
Bacteremia is a life-threating syndrome often caused by methicillin-resistant Staphylococcus aureus (MRSA). Thus, there is an urgent need to develop novel approaches to successfully treat this infection.
Genzhu Wang, Liang Li, Xiukun Wang, Xue Li, Youwen Zhang, Jie Yu, Jiandong Jiang, Xuefu You, Yan Q. Xiong   +8 more
doaj   +1 more source

β-Lactam Antibiotics Enhance the Pathogenicity of Methicillin-Resistant Staphylococcus aureus via SarA-Controlled Lipoprotein-Like Cluster Expression

mBio, 2019
Methicillin-resistant Staphylococcus aureus (MRSA) resists nearly all β-lactam antibiotics that have a bactericidal activity. However, whether the empirically used β-lactams enhance MRSA pathogenicity in vivo remains unclear.
Weilong Shang, Yifan Rao, Ying Zheng, Yi Yang, Qiwen Hu, Zhen Hu, Jizhen Yuan, Huagang Peng, Kun Xiong, Li Tan, Shu Li, Junmin Zhu, Ming Li, Xiaomei Hu, Xuhu Mao, Xiancai Rao   +15 more
doaj   +1 more source

β‐Lactam allergy testing and delabeling—Experiences and lessons from Singapore

Immunity, Inflammation and Disease, 2020
Background β‐Lactam allergy is over‐reported and this leads to greater healthcare costs. Allergy testing has inherent risks, yet patients who test negative may continue avoiding β‐lactams.
Yee Kiat Heng, Yasmin Chia Chia Liew, Yan Ling Kong, Yen Loo Lim   +3 more
doaj   +1 more source

Differential contribution of PBP occupancy and efflux on the effectiveness of β-lactams at their target site in clinical isolates of Neisseria gonorrhoeae.

PLoS Pathogens
Neisseria gonorrhoeae exhibits alarming antibiotic resistance trends and poses a significant challenge in therapeutic management. This study aimed to explore the association of penA alleles with penicillin-binding protein (PBP) occupancy patterns and ...
Silvia López-Argüello, Eva Alcoceba, Paula Ordóñez, Biel Taltavull, Gabriel Cabot, Maria Antonia Gomis-Font, Antonio Oliver, Bartolome Moya   +7 more
doaj   +1 more source

Intrinsic Class D β-Lactamases of Clostridium difficile

mBio, 2018
Clostridium difficile is the causative agent of the deadly C. difficile infection. Resistance of the pathogen to β-lactam antibiotics plays a major role in the development of the disease, but the mechanism of resistance is currently unknown.
Marta Toth, Nichole K. Stewart, Clyde Smith, Sergei B. Vakulenko   +3 more
doaj   +1 more source

OmpF channel permeability of quinolones and their comparison with β-lactams [PDF]

FEMS Microbiology Letters, 1992
Tetsuo Sawai, Akihito Yamaguchi, Akiko Saiki, Kazuki Hoshino   +3 more
openaire   +1 more source

Functional insights into Streptomyces isolates containing both clavulanic acid-like and carbapenem biosynthetic gene clusters

mSphere
β-Lactam antibiotics and β-lactamase inhibitor combinations are essential for combating antimicrobial resistance, with many β-lactams, including clavulanic acid (CA), themselves being products of specialized metabolic pathways in bacteria. CA is a potent
Kapil Tahlan, Arshad Ali Shaikh, Jingyu Liu, Kajal Gupta, Nader AbuSara, Santosh Kumar Srivastava, Adau Deng, Ayla Rouah, Madelyn Joan Swackhamer   +8 more
doaj   +1 more source

Synthesis and enzyme-based evaluation of analogues L-tyrosine thiol carboxylic acid inhibitor of metallo-β-lactamase IMP-1

Journal of Enzyme Inhibition and Medicinal Chemistry, 2019
The emergence of drug-resistant pathogenic bacteria is occurring due to the global overuse and misuse of β-lactam antibiotics. Infections caused by some bacteria which secrete metallo-β-lactamases (enzymes that inactivate β-lactam antibiotics) are ...
Omid Khalili Arjomandi, Mahboubeh Kavoosi, Hadi Adibi   +2 more
doaj   +1 more source