Results 21 to 30 of about 158,347 (278)

Murepavadin induces envelope stress response and enhances the killing efficacies of β-lactam antibiotics by impairing the outer membrane integrity of Pseudomonas aeruginosa

open access: yesMicrobiology Spectrum, 2023
Pseudomonas aeruginosa is a ubiquitous opportunistic pathogen that can cause a variety of acute and chronic infections. The bacterium is highly resistant to numerous antibiotics.
Xiaoya Wei   +9 more
doaj   +1 more source

Bacterial outer membrane vesicles in the fight against cancer. [PDF]

open access: yesChin Med J (Engl)
. Bacterial outer membrane vesicles (OMVs) are diminutive vesicles naturally released by Gram-negative bacteria. These vesicles possess distinctive characteristics that attract attention for their potential use in drug administration and immunotherapy in
Meng Y, Kong C, Ma Y, Sun J, Zhang G.
europepmc   +2 more sources

Lipopolysaccharide Transport to the Bacterial Outer Membrane in Spheroplasts [PDF]

open access: yesJournal of Biological Chemistry, 2005
The mechanism of lipopolysaccharide (LPS) transport in Gram-negative bacteria from the inner membrane to the outer membrane is largely unknown. Here, we investigated the possibility that LPS transport proceeds via a soluble intermediate associated with a periplasmic chaperone analogous to the Lol-dependent transport mechanism of lipoproteins.
Tefsen, B.   +4 more
openaire   +6 more sources

Outer membrane permeabilization is an essential step in the killing of gram-negative bacteria by the lectin RegIIIβ. [PDF]

open access: yesPLoS ONE, 2013
The C-type lectin RegIIIβ can kill certain Gram-positive and Gram-negative bacteria. The susceptibility of S. Typhimurium depends on the bacterial growth phase, i.e., bacteria from the logarithmic growth phase do bind RegIIIβ and are subsequently killed.
Tsuyoshi Miki, Wolf-Dietrich Hardt
doaj   +1 more source

Bacterial Outer Membranes and Interactions with Membrane Proteins [PDF]

open access: yesBiophysical Journal, 2015
Because the bacteria's outer membrane (OM) acts as an effective barrier against the permeation of both hydrophobic and hydrophilic compounds, gram-negative cell permeation is one of the biggest challenges to the discovery of novel antibiotics for bacterial infections and antibiotic resistance worldwide.
openaire   +2 more sources

Biomimetic Lipopolysaccharide‐Free Bacterial Outer Membrane‐Functionalized Nanoparticles for Brain‐Targeted Drug Delivery

open access: yesAdvanced Science, 2022
The blood–brain barrier (BBB) severely blocks the intracranial accumulation of most systemic drugs. Inspired by the contribution of the bacterial outer membrane to Escherichia coli K1 (EC‐K1) binding to and invasion of BBB endothelial cells in bacterial ...
Haiyan Chen   +10 more
doaj   +1 more source

HELICOBACTER PYLORI OIPA VIRULENCE GENE AS A MOLECULAR MARKER OF SEVERE GASTROPATHIES [PDF]

open access: yesArquivos de Gastroenterologia
Background: Helicobacter pylori is an etiologic agent of gastroduodenal diseases. The microorganism, considered a type I carcinogen, affects about 50% of the global population. H.
Diogo Nery MACIEL   +4 more
doaj   +1 more source

The Fluidity of the Bacterial Outer Membrane Is Species Specific

open access: yesBioEssays, 2020
AbstractThe outer membrane (OM) is an essential barrier that guards Gram‐negative bacteria from diverse environmental insults. Besides functioning as a chemical gatekeeper, the OM also contributes towards the strength and stiffness of cells and allows them to sustain mechanical stress. Largely influenced by studies of Escherichia coli, the OM is viewed
Pengbo Cao, Daniel Wall
openaire   +3 more sources

Enzymology of lipid A palmitoylation in bacterial outer membranes [PDF]

open access: yesJournal of Endotoxin Research, 2004
The enzymology of palmitate addition to lipid A can be traced to the early discovery of monosaccharide lipid A precursors, but the functional importance of lipid A palmitoylation in bacterial resistance to the host immune response has emerged only recently.
Ahmed El Zoeiby   +4 more
openaire   +3 more sources

Knockout of mlaA increases Escherichia coli virulence in a silkworm infection model.

open access: yesPLoS ONE, 2022
The mlaA gene encodes a lipoprotein to maintain an outer membrane lipid asymmetry in gram-negative bacteria. Although the role of mlaA in bacterial virulence has been studied in several bacterial species, there are no reports of its role in E.
Haruka Nasu   +3 more
doaj   +2 more sources

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