Exopolysaccharide-mediated silver nanoparticles synthesized from Lactobacillus paracasei with antimicrobial, antibiofilm and antioxidant activities
Mahyar Zeinivand,
No information about this author
Seyed Soheil Aghaei,
No information about this author
Mohsen Zargar
No information about this author
et al.
Archives of Microbiology,
Journal Year:
2023,
Volume and Issue:
205(5)
Published: April 28, 2023
Language: Английский
Biofilm contamination in confined space stations: reduction, coexistence or an opportunity?
Frontiers in Materials,
Journal Year:
2024,
Volume and Issue:
11
Published: March 28, 2024
The
prolonged
human
permanence
in
confined
environments
space,
such
as
the
case
of
International
Space
Station,
has
inadvertently
fostered
conditions
leading
to
uncontrolled
microbial
proliferation
on
surfaces,
known
biofilm.
Biofilm
presence
represents
a
challenge
critical
spacecraft
systems,
that
can
lead
contamination
issues
and
systems
loss
function
due
biofouling
phenomena.
This
scenario
is
further
complicated
by
microgravity
controversial
role
biofilm
growth
formation.
Biocontamination
be
limiting
factor
long-term
mission
outer
Earth
orbit
an
economic
health
issue
ISS.
study
addresses
pressing
need
for
effective
antimicrobial
strategies
against
resilient
biofilms
where
usage
biocidal
chemical
compounds
strictly
controlled
toxicity
dangers.
Traditional
methods
complemented
advanced
coatings
techniques.
A
promising
approach
based
oxygen
plasma
coating
platform.
technology
potentially
extended
wide
range
antibiofilm
agents
(e.g.,
peptides,
bacteriophages,
nanoparticles,
quorum
sensing
disrupting
agents,
etc.)
substrates
metal,
plastic,
ceramic)
showing
exceptional
flexibility.
An
alternative
vision
inspired
dual
nature
biofilms,
addressed
“good”
or
“bad”
depending
specific
application.
Indeed,
have
great
potential
closed
small
space
habitat
ISS)
their
“large
habitat”
planet
itself.
replication
complex
biological
equilibrium
open
challenge.
Language: Английский
Non-toxic silicone-polyurethane nanocomposites filled with graphene/tungsten disulphide nanorods as hierarchical superhydrophobic marine antifouling surfaces
Progress in Organic Coatings,
Journal Year:
2024,
Volume and Issue:
200, P. 108987 - 108987
Published: Dec. 12, 2024
Language: Английский
Surface modifications of inert and bioactive glasses with plasma-deposited polymer coatings to impart antiadhesive properties
Marta Miola,
No information about this author
Kevin Pontillo,
No information about this author
Katiuscia Costabello
No information about this author
et al.
Surfaces and Interfaces,
Journal Year:
2025,
Volume and Issue:
unknown, P. 106346 - 106346
Published: March 1, 2025
Language: Английский
Subinhibitory concentrations of antibiotics affect development and parameters of Helicobacter pylori biofilm
Frontiers in Pharmacology,
Journal Year:
2024,
Volume and Issue:
15
Published: Oct. 14, 2024
Introduction
Helicobacter
pylori
causes
chronic
gastric
diseases
in
nearly
50%
of
people
around
the
world.
It
is
suggested
that
biofilm
formation
has
a
pronounced
effect
on
dynamic
resistance
spread
and
recurrence
these
infections.
Methods
To
mimic
scenario
therapeutic
ineffectiveness,
we
investigated
impact
sub-minimal
inhibitory
concentrations
(sub-MICs)
antibiotics
development
parameters
biofilms
produced
by
clinical
H.
strains.
Results
We
observed
constant
exposure
planktonic
forms
to
metronidazole
or
levofloxacin
stimulated
speed
autoaggregation
amount
extracellular
matrix,
resulting
increased
dimensions
developed
biofilms.
Contrary
this,
continuous
clarithromycin
negatively
affected
number
biofilm-related
reactions
led
biofilm-weakening
effect.
Through
assessing
membrane
fatty
acid
profiles
antibiotic-exposed
cells,
confirmed
induced
biofilm-like
phenotype,
while
kept
bacteria
form.
Discussion
Our
results
suggest
sub-MICs
affect
biochemical
biophysical
properties
developing
strains
may
effectiveness
antibiotic
treatment.
Language: Английский
Unraveling the Diverse Profile of N-Acyl Homoserine Lactone Signals and Their Role in the Regulation of Biofilm Formation in Porphyra haitanensis-Associated Pseudoalteromonas galatheae
Microorganisms,
Journal Year:
2023,
Volume and Issue:
11(9), P. 2228 - 2228
Published: Sept. 4, 2023
N-acyl
homoserine
lactones
(AHLs)
are
small,
diffusible
chemical
signal
molecules
that
serve
as
social
interaction
tools
for
bacteria,
enabling
them
to
synchronize
their
collective
actions
in
a
density-dependent
manner
through
quorum
sensing
(QS).
The
QS
activity
from
epiphytic
bacteria
of
the
red
macroalgae
Porphyra
haitanensis,
along
with
its
involvement
biofilm
formation
and
regulation,
remains
unexplored
prior
scientific
inquiries.
Therefore,
this
study
explores
AHL
produced
by
bacteria.
bacterium
isolated
surface
P.
haitanensis
was
identified
Pseudoalteromonas
galatheae
16s
rRNA
gene
sequencing
screened
AHLs
using
two
reporter
strains,
Agrobacterium
tumefaciens
A136
Chromobacterium
violaceum
CV026.
crystal
violet
assay
used
biofilm-forming
phenotype.
inferences
revealed
produces
four
different
types
molecules,
i.e.,
C4-HSL,
C8-HSL,
C18-HSL,
3-oxo-C16-HSL,
it
observed
phenotype
is
regulated
molecules.
This
first
providing
insights
into
activity,
diverse
profile,
regulatory
mechanisms
govern
galatheae.
These
findings
offer
valuable
future
investigations
exploring
role
producing
epiphytes
biofilms
life
cycle
haitanensis.
Language: Английский
The role of air relative humidity on the wettability of Pseudomonas fluorescens AR11 biofilms
Daniele Marra,
No information about this author
Emilia Orillo,
No information about this author
Giuseppe Toscano
No information about this author
et al.
Colloids and Surfaces B Biointerfaces,
Journal Year:
2024,
Volume and Issue:
237, P. 113831 - 113831
Published: March 2, 2024
Biofilms
are
complex
porous
materials
formed
by
microorganisms,
polysaccharides,
proteins,
eDNA,
inorganic
matter,
and
water.
They
ubiquitous
in
various
environmental
niches
known
to
grow
at
solid-liquid,
solid-air
air-liquid
interfaces,
often
causing
problems
several
industrial
sanitary
fields.
Their
removal
is
a
challenge
many
applications
numerous
studies
have
been
conducted
identify
promising
chemical
species
as
cleaning
agents.
While
these
substances
target
specific
components
of
biofilm
structure,
the
role
water
content
biofilm,
how
it
can
influence
wettability
detergent
absorption
quite
neglected
literature.
Estimating
challenging
task
due
its
heterogeneity
morphology
composition.
In
this
study,
we
controlled
Pseudomonas
fluorescens
AR
11
biofilms
grown
on
submerged
glass
slides
regulating
relative
humidity
after
drying.
Interfacial
properties
were
investigated
measuring
wetting
soybean
oil.
The
structure
was
evaluated
using
Confocal
Laser
Scanning
Microscopy
Electron
Microscopy.
results
showed
that
has
significant
measurable
effect
wettability,
leading
hypothesis
preliminary
control
play
crucial
process.
Language: Английский
The genus Pseudomonas
Elsevier eBooks,
Journal Year:
2024,
Volume and Issue:
unknown, P. 23 - 55
Published: Nov. 1, 2024
Language: Английский
The combined role of hematocrit and shear flow on the morphology of platelet aggregates by Fast Fourier Transform and 4D confocal microscopy
Cell Reports Physical Science,
Journal Year:
2024,
Volume and Issue:
5(11), P. 102288 - 102288
Published: Nov. 1, 2024
Language: Английский