Results 1 to 10 of about 74 (72)

Molecular Docking Approach of Viscosin as Antibacterial for Methicillin-resistant Staphylococcus Aureus Via β-Lactamase Inhibitor Mechanism

Clinical and Research Journal in Internal Medicine, 2021
Background: β-lactamase is an enzyme that plays a role in the occurrence of antibiotic resistance against Methicillin-resistant Staphylococcus aureus (MRSA) bacteria. Viscosin is a lipopeptide biosurfactant produced by the Pseudomonas group bacteria.
Mokhamad Fahmi Rizki Syaban, Nabila Erina Erwan, Muhammad Rafif Raihan Syamsuddin, Fatimah Az Zahra, Faradilah Lukmana Sabila   +4 more
openaire   +1 more source

Penetration of β-lactamase inhibitors into the periplasm of Gram-negative bacteria [PDF]

FEMS Microbiology Letters, 1999
The effectiveness of a beta-lactamase inhibitor/beta-lactam combination against Gram-negative pathogens depends on many interplaying factors, one of which is the penetration of the inhibitor across the outer membrane. In this work we have measured the relative penetrations of clavulanic acid, sulbactam, tazobactam and BRL 42715 into two strains of ...
Farmer TH, Degnan BA, Payne DJ
openaire   +3 more sources

Outer membrane permeability of β-lactamase inhibitors inPseudomonas aeruginosa [PDF]

FEMS Microbiology Letters, 1995
Evaluation of four beta-lactamase inhibitors in terms of their outer membrane permeability in Pseudomonas aeruginosa revealed that sulbactam and tazobactam diffused most efficiently and equally well. That of BRL42715 appeared to be a factor of ten lower than that of the above two, but it showed the strongest beta-lactamase inhibitory activity.
S, Satake, T, Nakae
openaire   +2 more sources

Characterization and amino acid sequence of IRT-4, a novel TEM-type enzyme with a decreased susceptibility to β-lactamase inhibitors [PDF]

FEMS Microbiology Letters, 1994
The clinical isolate Escherichia coli PEY was highly resistant to amoxycillin, ticarcillin and piperacillin associated to beta-lactamase inhibitors such as clavulanic acid, sulbactam, tazobactam and brobactam but susceptible to cephalosporins, aztreonam and imipenem.
T, Brun, J, Péduzzi, M M, Caniça, G, Paul, P, Névot, M, Barthélémy, R, Labia   +6 more
openaire   +2 more sources

Substitution of Met-69 by Ala or Gly in TEM-1 β-lactamase confer an increased susceptibility to clavulanic acid and other inhibitors [PDF]

FEMS Microbiology Letters, 2002
In some inhibitor-resistant TEM-derived beta-lactamases, Met-69 is substituted by Leu, Ile or Val. Residue 69 is located in a region of strong structural constraints, at the beginning of H2 alpha-helix, and in the vicinity of B3 and B4 beta-strands.
Stéphanie, Madec, Claudine, Blin, Rajagopal, Krishnamoorthy, Bertrand, Picard, El Bachir, Chaibi, Martine, Fouchereau-Péron, Roger, Labia   +6 more
openaire   +2 more sources

Novel IMP-1 metallo-β-lactamase inhibitors can reverse meropenem resistance inEscherichia coliexpressing IMP-1 [PDF]

FEMS Microbiology Letters, 2005
IMP-1 metallo-beta-lactamase is a zinc metalloenzyme that confers antibiotic resistance to bacteria through the hydrolysis of beta-lactam antibiotics. Pathogens that express the enzyme show reduced susceptibility to carbapenems, such as meropenem and imipenem.
Joseph G, Moloughney, Janice, D Thomas, Jeffrey H, Toney   +2 more
openaire   +2 more sources

Substitution of Arg-244 by Cys or Ser in SHV-1 and SHV-5 β-lactamases confers resistance to mechanism-based inhibitors and reduces catalytic efficiency of the enzymes [PDF]

FEMS Microbiology Letters, 1998
The conserved residue Arg-244 was substituted by the smaller uncharged amino acids Cys and Ser in SHV-1 and SHV-5 beta-lactamases by a PCR-based site-specific mutagenesis procedure. The mutant beta-lactamases displayed decreased susceptibility to clavulanate and, to a lesser extent, to tazobactam and sulbactam.
Giakkoupi, P, Tzelepi, E, Legakis, NJ, Tzouvelekis, LS   +3 more
openaire   +3 more sources

Periodontal microbiology and microbial etiology of periodontal diseases: Historical concepts and contemporary perspectives

Periodontology 2000, EarlyView., 2023
Abstract This narrative review summarizes the collective knowledge on periodontal microbiology, through a historical timeline that highlights the European contribution in the global field. The etiological concepts on periodontal disease culminate to the ecological plaque hypothesis and its dysbiosis‐centered interpretation.
Georgios N. Belibasakis, Daniel Belstrøm, Sigrun Eick, Ulvi K. Gursoy, Anders Johansson, Eija Könönen   +5 more
wiley   +1 more source

Supra and subgingival application of antiseptics or antibiotics during periodontal therapy

Periodontology 2000, EarlyView., 2023
Abstract Periodontal diseases (gingivitis and periodontitis) are characterized by inflammatory processes which arise as a result of disruption of the balance in the oral ecosystem. According to the current S3 level clinical practice guidelines, therapy of patients with periodontitis involves a stepwise approach that includes the control of the patient ...
Elena Figuero, Jorge Serrano, Nicole Birgit Arweiler, Thorsten Mathias Auschill, Ali Gürkan, Gülnur Emingil   +5 more
wiley   +1 more source

Repression of Virulence in Staphylococcus aureus by 2‐Aminothiol‐Mediated Quorum Quenching

Angewandte Chemie, EarlyView.
Simple analogues of cysteine that can eliminate the native autoinducing peptides (AIPs) of staphylococci extracellularly, before they activate their receptor, and turn off quorum sensing in different Staphylococcus aureus. The elimination of AIPs occurs through a mechanism similar to native chemical ligation (NCL). Further, this strategy showed promise
Bengt H. Gless, Riccardo Milazzo, Martin S. Bojer, Benjamin S. Sereika‐Bejder, Hanne Ingmer, Christian A. Olsen   +5 more
wiley   +2 more sources