Results 71 to 80 of about 74,609 (245)

Detection of SHV β-lactamases in Gram-negative bacilli using fluorescein-labeled antibodies [PDF]

, 2009
Background β-lactam resistance in Gram-negative bacteria is a significant clinical problem in the community, long-term care facilities, and hospitals. In these organisms, β-lactam resistance most commonly results from the production of β-lactamases.
Bethel Christopher R, Bonomo Robert A, Dietenberger Nicole J, Endimiani Andrea, Hujer Andrea M, Keslar Karen S   +5 more
core   +1 more source

Significance of Self‐Expandable Metallic Stent for Postoperative Intra‐Abdominal Infection After Pancreatoduodenectomy in Patients With a Hard Pancreas

Annals of Gastroenterological Surgery, EarlyView.
ABSTRACT Background Self‐expandable metal stents (SEMS) are often used for preoperative biliary drainage in pancreatoduodenectomy (PD); however, their impact on postoperative intra‐abdominal infection (POAI) remains unclear. This study aimed to evaluate the clinical significance of SEMS in relation to POAI.
Kosuke Mori, Haruyoshi Tanaka, Nana Kimura, Mina Fukasawa, Ayaka Itoh, Yoshihiro Shirai, Kazuto Shibuya, Kentaro Nagaoka, Yoshihiro Yamamoto, Tsutomu Fujii   +9 more
wiley   +1 more source

Impact of respiratory syncytial virus on Streptococcus pneumoniae resistance to β-lactam antibiotics: an investigative study in children

BMC Microbiology
Background This study characterizes the molecular interplay between respiratory syncytial virus (RSV) glycoproteins (G/F) and Streptococcus pneumoniae (S.pn) penicillin-binding proteins (PBPs), while evaluating RSV’s potential role in modulating S.pn β ...
Lu Li, Yushun Wan, Yuncheng Wang, Ye Tao, Xiao Long, Enmei Liu, Yu Deng   +6 more
doaj   +1 more source

Compensatory evolution of pbp mutations restores the fitness cost imposed by β-lactam resistance in Streptococcus pneumoniae. [PDF]

PLoS Pathogens, 2011
The prevalence of antibiotic resistance genes in pathogenic bacteria is a major challenge to treating many infectious diseases. The spread of these genes is driven by the strong selection imposed by the use of antibacterial drugs. However, in the absence
Andrea G Albarracín Orio, Germán E Piñas, Paulo R Cortes, Melina B Cian, José Echenique   +4 more
doaj   +1 more source

Decreasing trend of β-lactam resistance in Salmonella isolates from broiler chickens due to the cessation of ceftiofur in ovo administration

Veterinary and Animal Science, 2022
Ceftiofur, a third-generation cephalosporin antimicrobial, was used in Japanese hatcheries for many years before 2012. We continue to study Salmonella in broilers and their antimicrobial resistance. The current study aimed to express how the cessation of
Vu Minh Duc, Rina Kakiuchi, Hiroka Muneyasu, Hajime Toyofuku, Takeshi Obi, Takehisa Chuma   +5 more
doaj   +1 more source

Interspecies Biofilm Dynamics Among Staphylococci: Inflammatory Contributions to Chronic Rhinosinusitis

International Forum of Allergy &Rhinology, EarlyView.
ABSTRACT Introduction Staphylococcus species are frequently isolated from the sinonasal niche of chronic rhinosinusitis (CRS) patients. While Staphylococcus aureus is often associated with recalcitrant CRS, Staphylococcus epidermidis and Staphylococcus lugdunensis are largely deemed commensal.
Sintayehu Ambachew, Mahnaz Ramezanpour, Clare M. Cooksley, Sholeh Feizi, Muhammed Awad, Kevin Aaron Fenix, Peter‐John Wormald, Alkis J. Psaltis, Sarah Vreugde   +8 more
wiley   +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

Evidence for the evolutionary steps leading to mecA-mediated ß-lactam resistance in staphylococci [PDF]

, 2017
The epidemiologically most important mechanism of antibiotic resistance in Staphylococcus aureus is associated with mecA–an acquired gene encoding an extra penicillin-binding protein (PBP2a) with low affinity to virtually all β-lactams.
Bouchami, O, Bowden, R, Boye Nielsen, J, Damborg, P, de Lencastre, H, Guardabassi, L, Hughes, D, Miragaia, M, Perreten, V, Rolo, J, Sobral, R, Tomasz, A, Westh, H, Worning, P   +13 more
core   +6 more sources

Antibacterial Activity of Culture Extracts of Penicillium chrysogenum PCL501: Effects of Carbon Sources [PDF]

, 2009
Penicillium chrysogenum PCL501 produced β-lactam antibiotics when fermented with different agro-wastes: cassava shavings, corncob, sawdust and sugarcane pulp.
Chinedu, SN, Okafor, UA, Okochi, VI, Onyegeme-Okerenta, BM   +3 more
core   +1 more source

Repurposing of Meropenem and Nadifloxacin for Treatment of Burn Patients? [PDF]

, 2009
The escalating number of multidrug resistant pathogens has demanded the swift development of new and potent antibiotics (ref. 2). Metallo-[beta]-lactamases (MBLs) continue to evolve, rendering the latest generation of carbapenem antibiotics useless (ref.
Christie E. Costa, James Spencer, Janice D. Thomas, Jeffrey H. Toney, Joseph G. Moloughney, Karla S. Bullon   +5 more
core   +1 more source