Results 51 to 60 of about 109,585 (312)

DOTA‐grafted Cationic Polymers Behaving as Powerful Macromolecular Resistance‐reversal Agents (MRRAs) Combating Against New Delhi Metallo‐β‐lactamase (NDM)‐producing Bacteria

Advanced Science, EarlyView.
Two macromolecular resistance‐reversal agents (MRRAs)—linear (MRRAL) and nanostructured (MRRAN) polymers were fabricated by integrating DOTA motifs into tunable polycationic scaffolds. MRRAs exhibit superior antibacterial potency once combined with meropenem (MEM) through (i) bacterial membrane disruption via localized cationic charge and ...
Ruixue Wang, Jian Zhang, Yun li, Liping Qiao, Zhuorui Dong, Dandan Cui, Peirong Bai, Liping Li, Bing Cao, Ruiping Zhang   +9 more
wiley   +1 more source

Expression of β-lactamase inCoxiella burnetiitransformants [PDF]

FEMS Microbiology Letters, 2000
Coxiella burnetii can be transformed to ampicillin resistance by electroporation with plasmids encoding beta-lactamase. However, non-plasmid emergence of resistance to ampicillin also develops. To validate the usefulness of the bla gene marker for selection and detection, transformed C.
M L, Suhan, H A, Thompson
openaire   +2 more sources

Altering Enzymatic Activity: Recruitment of Carboxypeptidase Activity into an RTEM β-Lactamase/Penicillin-Binding Protein 5 Chimera [PDF]

, 1990
The D-Ala-D-Ala carboxypeptidases/transpeptidases (penicillin-binding proteins, PBPs) share considerable structural homology with class A β-lactamases (EC 3.5.2.6), although these β-lactamases have no observable D-Ala-D-Ala carboxypeptidase activity ...
Chang, Yie-Hwa, Labgold, Marc R., Richards, John H.   +2 more
core  

The reaction mechanism of metallo-beta-lactamases is tuned by the conformation of an active site mobile loop [PDF]

, 2018
Carbapenems are "last resort" β-lactam antibiotics used to treat serious and life-threatening health care-associated infections caused by multidrug-resistant Gram-negative bacteria.
Alzari, Pedro M., Bethel, Christopher R., Bonomo, Robert A., Giannini, Estefanía, Klinke, Sebastian, Llarrull, Leticia Irene, Mojica, María F., Otero, Lisandro Horacio, Palacios, Antonela Rocio, Taracila, Magdalena A., Vila, Alejandro Jose   +10 more
core   +1 more source

A Chirality‐Converted Bacteriolytic Dodecapeptide Regulates Vibrio‐Induced Polymicrobial Infection and Ameliorates Invasion‐Associated Gut Microbiota Disequilibrium

Advanced Science, EarlyView.
Multidrug‐resistant Vibrio infections are rising rapidly and threaten coastal populations worldwide. This study introduces D‐zp37, a chirality‐engineered antimicrobial peptide with exceptional potency against resistant Vibrio species. D‐zp37 kills planktonic cells, blocks mixed‐species biofilms, disrupts essential bacterial stress responses, and shows ...
Ping Zeng, Qipeng Cheng, Xiaoxu Zhang, Honglan Wang, Jinghan Zhang, Xinyi Ding, Pengfei Zhang, Lanhua Yi, Kwok‐Yin Wong, Kin‐Fai Chan, Sheng Chen, Sharon Shui Yee Leung   +11 more
wiley   +1 more source

Whole-Cell Bioreporter-Based Assay for Detecting Fungal-Derived β-Lactamase Inhibitors

Biosensors
β-lactams are an important family of antibiotics that are prone to undergo resistance inhibition though the production of β-lactamases by some microorganisms.
Raz Benou, Robert S. Marks, Alex Sivan, Esti Kramarsky-Winter, Karina Golberg, Ariel Kushmaro   +5 more
doaj   +1 more source

Characterization of Piperacillin/Tazobactam-Resistant Klebsiella oxytoca Recovered from a Nosocomial Outbreak. [PDF]

PLoS ONE, 2015
We characterized 12 clinical isolates of Klebsiella oxytoca with the extended-spectrum β-lactamase (ESBL) phenotype (high minimum inhibitory concentration [MIC] values of ceftriaxone) recovered over 9 months at a university hospital in Japan.
Ai Fujita, Kouji Kimura, Satoru Yokoyama, Wanchun Jin, Jun-Ichi Wachino, Keiko Yamada, Hiroyuki Suematsu, Yuka Yamagishi, Hiroshige Mikamo, Yoshichika Arakawa   +9 more
doaj   +1 more source

Clinical Evolution of New Delhi Metallo-β-Lactamase (NDM) optimizes resistance under Zn(II) Deprivation [PDF]

, 2018
Carbapenem-resistant Enterobacteriaceae (CRE) are rapidly spreading and taking a staggering toll on all health care systems, largely due to the dissemination of genes coding for potent carbapenemases.
Bahr, Guillermo, Bethel, Christopher R., Bonomo, Robert A., Gonzalez, Lisandro Javier, Vila, Alejandro Jose, Vitor Horen, Luisina   +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

Neutralizing Carbapenem Resistance by Co-Administering Meropenem with Novel β-Lactam-Metallo-β-Lactamase Inhibitors

Antibiotics, 2023
Virulent Enterobacterale strains expressing serine and metallo-β-lactamases (MBL) genes have emerged responsible for conferring resistance to hard-to-treat infectious diseases. One strategy that exists is to develop β-lactamase inhibitors to counter this
Nakita Reddy, Letisha Girdhari, Mbongeni Shungube, Arnoldus C. Gouws, Byron K. Peters, Kamal K. Rajbongshi, Sooraj Baijnath, Sipho Mdanda, Thandokuhle Ntombela, Thilona Arumugam, Linda A. Bester, Sanil D. Singh, Anil Chuturgoon, Per I. Arvidsson, Glenn E. M Maguire, Hendrik G. Kruger, Thavendran Govender, Tricia Naicker   +17 more
doaj   +1 more source