Biosensors,
Journal Year:
2024,
Volume and Issue:
14(12), P. 606 - 606
Published: Dec. 11, 2024
Simultaneous
monitoring
of
antimicrobial
responses
to
bacterial
metabolic
activity
and
biofilm
formation
is
critical
for
efficient
screening
new
anti-biofilm
drugs.
A
microbial
fuel
cell-based
biosensor
using
Frontiers in Microbiology,
Journal Year:
2025,
Volume and Issue:
15
Published: Jan. 9, 2025
Klebsiella
pneumoniae
is
a
significant
nosocomial
pathogen
that
has
developed
resistance
to
multiple
antibiotics,
often
forming
biofilms
enhance
its
virulence.
This
study
investigated
the
efficacy
of
novel
nanoformulation,
AgNPs@chitosan-NaF,
in
combating
K.
biofilms.
Antimicrobial
susceptibility
testing
was
performed
assess
antibiotic
profile
isolates.
The
antibiofilm
activity
AgNPs@chitosan-NaF
evaluated
using
crystal
violet
staining
and
scanning
electron
microscopy.
underlying
mechanisms
action
were
through
gene
expression
analysis.
majority
isolates
exhibited
high
levels
multidrug
resistance.
demonstrated
superior
biofilm
inhibition
compared
AgNPs@chitosan,
significantly
reducing
biomass
disrupting
architecture
at
MICs
ranging
from
0.125
1
μg/mL.
Mechanistic
studies
revealed
nanoformulation
downregulated
key
biofilm-associated
genes,
including
treC,
fimA,
mrkA,
ecpA.
While
concentration-dependent
cytotoxic
effect
on
both
normal
cancer
cell
lines,
minimal
cytotoxicity
observed
concentrations
below
31.25
highlights
synergistic
silver
nanoparticles,
chitosan,
sodium
fluoride
emerges
as
promising
therapeutic
strategy
address
challenge
multidrug-resistant
bacterial
infections.
Frontiers in Microbiology,
Journal Year:
2024,
Volume and Issue:
15
Published: Oct. 3, 2024
The
increasing
threat
of
antibiotic
resistance
and
shrinking
treatment
options
for
infections
have
pushed
mankind
into
a
difficult
position.
looming
the
return
pre-antibiotic
era
has
caused
sense
urgency
to
protect
conserve
potency
therapy.
One
perverse
effects
is
dissemination
its
causative
agents
from
non-clinically
important
strains
clinically
vice
versa.
popular
saying
"Prevention
better
than
cure"
appropriate
tackling
resistance.
On
one
hand,
new
effective
antibiotics
are
required;
on
other
measures
use
antibiotics,
along
with
increased
awareness
in
general
public
related
use,
essential.
Awareness,
especially
resistance,
dissemination,
potential
threats,
can
help
greatly
controlling
abuse
containment
Antibiotic
drugs'
effectiveness
be
enhanced
by
producing
novel
analogs
or
adding
adjuvants
current
antibiotics.
Combinatorial
therapy
proven
successful
treating
multidrug-resistant
(MDR)
bacterial
infections.
This
review
aims
highlight
global
situation
discuss
methods
used
monitor,
prevent,
inhibit,
reverse
mechanisms
fight
against
International Journal of Molecular Sciences,
Journal Year:
2025,
Volume and Issue:
26(9), P. 3930 - 3930
Published: April 22, 2025
The
global
rise
in
antimicrobial
resistance,
particularly
among
ESKAPE
pathogens,
has
intensified
the
demand
for
alternative
therapeutic
strategies.
Silver
nanoparticles
(AgNPs)
have
exhibited
broad-spectrum
activity
and
represent
a
promising
approach
to
combat
multidrug-resistant
infections.
This
study
aimed
synthesize
functionalize
AgNPs
using
various
polymeric
agents—ethylene
glycol
(EG),
polyethylene
(PEG),
polyvinylpyrrolidone
(PVP),
their
combinations—and
evaluate
antibiofilm
efficacy
against
clinically
relevant
bacterial
strains.
were
synthesized
via
chemical
reduction
functionalized
as
Ag@EG,
Ag@PEG,
Ag@EG/PVP,
Ag@PEG/PVP.
A
total
of
68
clinical
isolates—including
Staphylococcus
aureus,
epidermidis,
lugdunensis,
Escherichia
coli,
Klebsiella
pneumoniae,
Pseudomonas
aeruginosa—were
tested.
Antimicrobial
susceptibility
was
assessed
disc
diffusion
broth
microdilution
assays,
while
evaluated
crystal
violet
method.
Among
all
tested
formulations,
Ag@EG/PVP
highest
activity,
with
notably
low
minimum
inhibitory
concentrations
(MIC50)
biofilm
eradication
(MBEC50)
Ps.
aeruginosa
K.
pneumoniae.
In
contrast,
PEG
or
EG
alone
showed
limited
efficacy.
Biofilm-forming
isolates,
spp.,
required
higher
inhibition.
These
results
highlight
critical
role
functionalization
modulating
properties
AgNPs,
demonstrating
potent
both
planktonic
biofilm-associated
bacteria.
Overall,
this
supports
further
developing
AgNPs-based
formulations
adjuncts
alternatives
conventional
antibiotics,
managing
biofilm-related
Future
research
should
focus
on
formulation
optimization,
safety
assessment,
translational
potential.