Pharmaceutics,
Journal Year:
2024,
Volume and Issue:
16(11), P. 1464 - 1464
Published: Nov. 16, 2024
Zinc
oxide
nanobiocomposites
were
successfully
synthesized
using
a
green
synthesis
approach.
The
process
involves
the
utilization
of
isoflavone
puerarin,
resulting
in
formation
PUE-ZnO
NPs.
Journal of Applied Toxicology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 28, 2025
ABSTRACT
The
widespread
use
of
electronic
devices
has
led
to
increased
blue
light
exposure,
highlighting
the
need
for
effective
radiation
blockers
with
protection.
Two
synthetic
2‐(2′‐hydroxyphenyl)benzoxazole
derivatives
named
azo‐4′‐benzoxazole
and
azo‐5′‐benzoxazole
have
shown
an
unprecedented
absorption
capacity
but
had
not
been
subjected
a
safety
evaluation.
This
study
aimed
evaluate
cytotoxic,
genotoxic,
mutagenic
activities
these
compounds.
cytotoxic
genotoxic
were
evaluated
using
MTT
assay
comet
in
L929
fibroblast
cells.
Salmonella
/microsome
micronucleus
test
performed
detect
gene
chromosomal
mutations.
IC
50
was
87.9
μg/mL
79.5
azo‐5′‐benzoxazole.
In
assay,
compound
induced
frameshift
mutations
TA97a
strain
presence
metabolic
activation
(S9
mix),
while
did
show
all
five
strains
tested.
showed
effects
cells
that
probably
associated
cleavage
azo‐5′
into
its
analogs
2‐(4′‐amino‐2′‐hydroxyphenyl)benzoxazole
2‐amino‐1‐naphthol.
conclusion,
azo‐substituted
group
at
5′
position
phenyl
ring
appears
greater
toxicological
risks
than
substituents
4′
2‐(phenyl)benzoxazole.
findings
warrant
further
preclinical
studies
ensure
compounds
as
filters.
Surface Engineering,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 13, 2025
This
experimental
work
aimed
to
investigate
the
effects
of
hydroxyapatite
(HAp)
coating
on
zinc
oxide
(ZnO)
nanoparticles
and
extent
which
HAp
improves
protective
efficacy
ZnO-based
sunscreen
against
UV
radiation.
First,
HAp-coated
ZnO
were
synthesized
characterized.
Afterwards,
they
mixed
into
a
basic
lotion.
Precipitation
spray
methods
applied
in
synthesis
process
nanoparticles,
then
continued
with
series
characterizations
using
XRF,
XRD,
UV-vis
DRS,
SEM-EDS.
The
results
show
that
an
surfaces
can
make
this
nanomaterial's
optical
band
gap
wider.
Also,
it
makes
less
capable
both
absorbing
light
performing
photocatalytic
reactions.
Furthermore,
layer
effectively
increases
radiation
reflectance
sunscreens.
Therefore,
is
reasonable
assume
will
improve
inorganic
protection
Journal of Cellular and Molecular Medicine,
Journal Year:
2025,
Volume and Issue:
29(7)
Published: April 1, 2025
ABSTRACT
The
skin
is
the
most
extensive
organ
in
human
body.
Photo
exposure
to
ultraviolet
(UV)
rays
causes
several
damages
cells,
including
premature
aging,
onset
of
possible
DNA
mutations,
and
risk
developing
cancers,
melanoma.
Protecting
from
damaging
effects
sun
through
application
creams
filters
important
prevent
irreversible
damages.
Several
natural
extracts
biomolecules
with
antioxidant
activity
are
widely
used
production
dietary
supplements
or
topical
products,
for
prevention
treatment
affections.
Within
this
context,
we
pre‐treated
fibroblasts
(HFF1),
skin‐isolated
stem
cells
(SSCs)
keratinocytes
(HaCaT)
two
containing
a
specific
solar
protection
factor
(SPF)
72
h
then
exposed
UV
light.
Gene
expression
analysis
was
performed
key
cell
cycle
regulators
(p16,
p19,
p21,
p53
TERT).
Cell
senescence
assessed
by
colorimetric
assays
beta‐galactosidase
potential,
revealing
ability
treated
counteract
free
radical
as
result
oxidative
stress.
Finally,
mutations
induced
photo
were
studied.
results
obtained
demonstrated
that
tested
products
elicit
positive
on
all
populations,
preserving
them
senescence,
being
also
able
increase
repairing
mechanisms
inducing
youngest
phenotype.
Journal of Toxicology and Environmental Health,
Journal Year:
2024,
Volume and Issue:
87(17), P. 687 - 700
Published: June 5, 2024
The
increasing
use
of
UV
filters,
such
as
benzophenone-3
(BP-3)
and
titanium
dioxide
nanoparticles
(TiO2
NPs),
has
raised
concerns
regarding
their
ecotoxicological
effects
on
the
aquatic
environment.
aim
present
study
was
to
examine
embryo-larval
toxicity
attributed
BP-3
or
TiO2
NPs,
either
alone
in
a
mixture,
utilizing
zebrafish
(Danio
rerio)
model
after
exposure
environmentally
relevant
concentrations
these
compounds.
Zebrafish
embryos
were
exposed
(10,
100,
1000
ng/L)
NPs
(1000
mixture
(BP-3
10,
ng/L
plus
NPs)
under
static
conditions
for
144
hr.
After
exposure,
levels
determined
by
high-performance
liquid
chromatography
(HPLC).
increased
presence
indicating
that
degradation
decreased
NPs.
In
addition,
zebrafish,
water
decreased,
larvae
might
absorb
BP-3.
Data
demonstrated
that,
general,
did
not
significantly
induce
changes
heart
spontaneous
contractions
frequencies,
reactive
oxygen
species
(ROS),
morphological
morphometric
parameters
well
mortality
rates
during
hr
exposure.
However,
groups
with
at
10
exhibited
an
earlier
significant
hatching
rate
than
controls.
Altogether,
data
indicates
potential
impact
environment
exists.
The
production
of
nanoparticles
has
recently
surged
due
to
their
varied
applications
in
biomedical,
pharmaceutical,
textile,
and
electronic
sectors.
However,
this
rapid
increase
nanoparticle
manufacturing
raised
concerns
about
environmental
pollution,
particularly
potential
adverse
effects
on
human
health.
Among
the
various
concerns,
inhalation
exposure
poses
significant
risks,
especially
affecting
respiratory
system.
Airway
epithelial
cells
play
a
crucial
role
as
primary
defense
against
inhaled
particulate
matter
pathogens.
Studies
have
shown
that
can
disrupt
airway
barrier,
triggering
inflammatory
responses,
generating
reactive
oxygen
species,
compromising
cell
viability.
our
understanding
how
different
types
specifically
impact
barrier
remains
limited.
To
investigate
nanoparticle-induced
cellular
responses
dysfunction,
both
vitro
culture
models
vivo
murine
are
commonly
utilized.
In
review,
we
discuss
methodologies
frequently
employed
assess
toxicity
disruption.
Furthermore,
analyze
compare
distinct
barrier.
By
elucidating
diverse
elicited
by
nanoparticles,
aim
provide
insights
guide
future
research
endeavors
assessing
mitigating
risks
associated
with
exposure.