RSC Advances,
Год журнала:
2023,
Номер
13(30), С. 20856 - 20867
Опубликована: Янв. 1, 2023
Bimetallic
nanoparticles
have
received
much
attention
recently
due
to
their
multifunctional
applications,
and
synergistic
potential
at
low
concentrations.
In
the
current
study,
bimetallic
boron
oxide-zinc
oxide
(B2O3-ZnO
NPs)
were
synthesized
by
an
eco-friendly,
cost-effective
method
through
utilization
of
gum
arabic
in
presence
gamma
irradiation.
Characterization
B2O3-ZnO
NPs
revealed
successful
synthesis
on
nano-scale,
good
distribution,
addition
formation
a
stable
colloidal
nano-solution.
Furthermore,
assessed
for
anticancer,
antimicrobial
antioxidant
activities.
The
evaluation
cytotoxicity
Vero
Wi38
normal
cell
lines
illustrated
that
are
safe
use
where
IC50
was
384.5
569.2
μg
ml-1,
respectively.
had
anticancer
activity
against
Caco
2
80.1
ml-1.
exhibited
promising
antibacterial
E.
coli,
P.
aeruginosa,
B.
subtilis
S.
aureus,
MICs
125,
62.5,
125
62.5
ml-1
Likewise,
antifungal
C.
albicans
as
unicellular
fungi
(MIC
ml-1).
Moreover,
displayed
(IC50
102.6
conclusion,
novel
successfully
using
under
radiation,
they
This
study
explores
the
innovative
use
of
an
aqueous
spirulina
and
chlorella
mixture
to
synthesize
bimetallic
zinc/manganese
nanoparticles
(ZnO–Mn
NPs),
showcasing
a
sustainable
approach
nanomaterial
development.
The
were
thoroughly
characterized
using
advanced
techniques,
including
UV–visible
spectrophotometry,
Fourier
transform
infrared
spectroscopy
(FTIR),
dynamic
light
scattering,
scanning
electron
microscopy,
transmission
energy-dispersive
x-ray
spectroscopy.
These
analyses
revealed
that
ZnO–Mn
NPs
have
average
size
314.4
nm,
polydispersity
index
0.28,
zeta
potential
−23.86
mV,
indicating
excellent
stability
uniform
distribution.
antifungal
properties
synthesized
tested
in
vitro
against
key
tomato
pathogens,
Sclerotinia
sclerotiorum
Fusarium
equiseti.
FTIR
analysis
highlighted
role
phytochemicals
from
algal
extracts
reduction
capping
nanoparticles.
While
activity
observed
was
modest
at
evaluated
concentrations,
strong
biocompatibility
underscore
their
as
eco-friendly
solutions
agricultural
applications.
research
highlights
promise
utilizing
natural
develop
effective
nanoparticles,
offering
greener
alternative
for
managing
plant
diseases
enhancing
farming
practices.
Bioadhesive
hydrogels
play
a
crucial
role
in
biomedical
applications
due
to
their
capacity
adhere
biological
surfaces.
This
study
investigates
novel
bioadhesive
hydrogel
system
developed
from
poly(vinyl
alcohol)
(PVA)
and
ascorbic
acid
(AS),
cross-linked
through
gamma
irradiation
at
7
kGy,
modified
with
5
wt
%
tannic
(TA).
The
primary
objective
was
enhance
the
hydrogel's
bioadhesive,
mechanical,
antimicrobial
properties.
Mechanical
testing
revealed
that
(PVA/AS)/TA
exhibited
significant
improvements,
lap
shear
strength
of
92
kPa,
tensile
0.57
MPa,
an
elongation
break
180%,
compared
unmodified
variant.
Antimicrobial
efficacy
assessed
against
bacterial
strains,
including
Staphylococcus
aureus
Escherichia
coli,
showing
potent
inhibitory
effects
minimum
concentration
(MIC)
values
25
μg/mL
30
μg/mL,
respectively.
findings
indicate
is
promising
candidate
for
wound
healing,
drug
delivery,
tissue
engineering
applications.
It
showcases
its
novelty
improving
properties
while
providing
functionality,
thus
addressing
critical
challenges
material
design.
Processes,
Год журнала:
2023,
Номер
11(9), С. 2698 - 2698
Опубликована: Сен. 9, 2023
This
research
presents
a
straightforward,
effective,
and
eco-friendly
method
for
the
production
of
silver
nanoparticles
(AgNPs)
copper
oxide
(CuONPs)
using
dried
fruit
Amomum
subulatum
as
reducing,
stabilizing,
capping
agent.
The
formation
AgNPs
CuONPs
is
supported
by
presence
surface
plasmon
resonance
band
(SPR)
at
440
nm
245
CuONPs.
Additionally,
identification
specific
biomolecules
responsible
synthesis
was
confirmed
through
FTIR
spectra
analysis.
Transmission
electron
microscope
(TEM)
images
demonstrated
that
had
spherical
shapes,
with
mean
particle
diameters
20.6
24.7
nm,
respectively.
X-ray
diffraction
selected
area
(SAED)
analyses
provided
evidence
crystalline
nature
synthesized
elements
observed
energy-dispersive
spectroscopy
(EDS)
Furthermore,
antibacterial
activity
found
to
be
superior
against
human
pathogens
such
Escherichia
coli,
Staphylococcus
aureus,
Bacillus
subtilis.
cytotoxic
biosynthesized
(NPs)
evaluated
in
vitro
cervical
cells
(HeLa)
breast
(MCF-7).
In
MCF-7
cells,
IC50
value
estimated
39.79
µg/mL,
while
83.89
µg/mL.
HeLa
45.5
CuONPs,
it
97.07
For
first
time,
an
from
extract
has
been
discussed
along
their
comparative
evaluation
study.
These
results
highlight
promising
applications
effective
agents
microbial
infections
potential
candidates
cancer
therapy.
Abstract
Background
Addressing
microbial
resistance
urgently
calls
for
alternative
treatment
options.
This
study
investigates
the
impact
of
a
bimetallic
formulation
containing
colistin,
silver,
and
copper
oxide
on
pandrug-resistant,
highly
virulent
Pseudomonas
aeruginosa
(P.
aeruginosa)
isolate
from
cancer
patient
at
National
Cancer
Institute,
Cairo
University,
Egypt.
Methods
Silver
nanoparticles
(Ag
NPs),
(CuO
silver-copper
(Ag-CuO
NPs)
were
synthesized
using
gamma
rays,
combined
with
colistin
(Col),
characterized
by
various
analytical
methods.
The
antimicrobial
activity
Col-Ag
NPs,
Col-CuO
Col-Ag-CuO
NPs
against
P.
was
evaluated
agar
well
diffusion
method,
their
minimum
inhibitory
concentration
(MIC)
determined
broth
microdilution.
Virulence
factors
such
as
pyocyanin
production,
swarming
motility,
biofilm
formation
assessed
before
after
NPs.
in
vivo
efficacy
Galleria
mellonella
model,
antibacterial
mechanism
examined
through
membrane
leakage
assay.
Results
optimal
synthesis
Ag
occurred
ray
dose
15.0
kGy,
highest
optical
density
(OD)
2.4
375
nm.
Similarly,
CuO
had
an
OD
1.5
330
Bimetallic
Ag-CuO
most
potent
yielding
1.9
425
MIC
significantly
reduced
when
nanoparticles:
8
µg/mL
alone,
0.046
0.0117
four-fold
compared
to
Increasing
sub-inhibitory
0.29
×
10
-2
0.58
32–64%
twitching
motility
34–97%.
At
these
concentrations,
production
decreased
39–58%,
inhibited
33–48%.
non-toxic
,
showing
100%
survival
day
3,
similar
saline-treated
group.
Conclusions
conjugated
presents
promising
combating
challenging
pathogen
hospital
settings.
Further
research
is
needed
explore
elucidate
mechanisms
underlying
effects
colistin-bimetallic
persistence
dissemination.
Frontiers in Bioengineering and Biotechnology,
Год журнала:
2024,
Номер
11
Опубликована: Янв. 11, 2024
Increasing
bacterial
resistance
and
the
negative
impact
of
currently
used
antibacterial
agents
have
produced
need
for
novel
anticancer
drugs.
In
this
regard,
nanotechnology
could
provide
safer
more
efficient
therapeutic
agents.
The
main
methods
nanoparticle
production
are
chemical
physical
approaches
that
often
costly
environmentally
unsafe.
current
study,
Pluchea
indica
leaf
extract
was
biosynthesis
bimetallic
selenium–gold
nanoparticles
(Se-Au
BNPs)
first
time.
Phytochemical
examinations
revealed
P.
includes
90.25
mg/g
dry
weight
(DW)
phenolics,
275.53
DW
flavonoids,
26.45
tannins.
X-ray
diffraction
(XRD),
transmission
electron
microscopy
(TEM),
Fourier-transform
infrared
(FTIR)
spectroscopy,
dynamic
light
scattering
(DLS),
scanning
(SEM),
energy-dispersive
spectroscopy
(EDX)
techniques
were
employed
to
characterize
Se-Au
BNPs.
Based
on
UV-vis
spectra,
absorbance
BNPs
peaked
at
238
374
nm.
SEM
imaging,
emerged
as
bright
particles,
both
Au
Se
uniformly
distributed
throughout
extract.
XRD
analysis
average
size
45.97
showed
properties
against
Escherichia
coli
,
Pseudomonas
aeruginosa
Staphylococcus
aureus
Bacillus
subtilis
with
minimum
inhibitory
concentrations
(MICs)
31.25,
15.62,
3.9
μg/mL,
respectively.
Surprisingly,
a
cytotoxicity
assay
IC
50
value
toward
Wi
38
normal
cell
line
116.8
implying
all
MICs
described
above
be
safely.
More
importantly,
shown
higher
efficacy
human
breast
cancer
cells
(MCF7),
an
13.77
μg/mL.
conclusion,
paper
is
data
effective
utilization
in
biologically
active
European Journal of Pharmaceutics and Biopharmaceutics,
Год журнала:
2024,
Номер
201, С. 114349 - 114349
Опубликована: Июнь 5, 2024
Nanocarriers
have
demonstrated
promising
potential
in
the
delivery
of
various
anticancer
drugs
and
improving
efficiency
treatment.
In
this
study,
silver
nanoparticles
(AgNPs)
were
green-synthesized
using
extracts
different
parts
pomegranate
plant,
including
peel,
flower
petals,
calyx.
To
obtain
most
efficient
extract
used
for
green
synthesis
AgNPs,
all
three
types
synthesized
characterized.
Then,
(3-Aminopropyl)
triethoxysilane-functionalized
mesoporous
silica
(MSNs-APTES)
decorated
with
AgNPs
fabricated
via
a
one-pot
green-synthesis
method.
directly
coated
on
surface
MSNs-APTES
by
adding
enriched
source
reducing
agent
leading
to
converting
ion
AgNPs.
The
MSN-APTES-AgNPs
(MSNs-AgNPs)
been
thoroughly
characterized
nanoparticle
characterization
techniques.
addition,
DNA
cleavage
hemolysis
activities
analyzed,
confirming
biocompatibility
nanoparticles.
Doxorubicin
(DOX,
as
breast/cervical
anti-cancer
drug)
loading
(42.8%)
release
profiles
investigated
UV–visible
spectroscopy.
fibroblast,
breast
cancer,
cervical
cancer
cells'
viability
against
DOX-loaded
also
studied.
results
high
drug
loading,
uniform
shape,
small
functionalized
its
great
management.