Environmental Toxicology and Pharmacology,
Journal Year:
2024,
Volume and Issue:
110, P. 104503 - 104503
Published: July 24, 2024
Nanoplastics
(NPs)
affect
fertility.
We
evaluated
the
effects
of
NPs
treatment
on
luteal
and
endothelial
cells.
examined
crucial
markers
growth
redox
status.
did
not
induce
changes
in
ATP
levels
cells,
while
it
increased
(p<
0.05)
their
proliferation.
In
no
change
proliferation
was
detected,
an
increase
(p<0.05)
observed.
The
reactive
oxygen
species,
superoxide
anion
nitric
oxide
(p<0.001)
detected
both
cell
types,
which
also
showed
dismutase
enzyme
activity
as
well
non-enzymatic
antioxidant
power
(p<0.05).
A
decrease
progesterone
production
vascular
factor
were
addition,
a
dose-dependent
accumulation
cells
shown,
that
likely
occurred
through
adhesion
internalization.
Results
underline
potential
risk
for
corpus
luteum
functionality.
Journal of Hazardous Materials,
Journal Year:
2024,
Volume and Issue:
477, P. 135256 - 135256
Published: July 19, 2024
Photodegradation
of
plastic
consumer
products
is
known
to
accelerate
weathering
and
facilitate
the
release
chemicals
particles
into
aquatic
environment.
However,
these
processes
are
complex.
In
our
presented
pilot
study,
eight
were
leached
in
distilled
water
under
strong
ultraviolet
(UV)
light
simulating
months
Central
European
climate
compared
their
respective
dark
controls
(DCs).
The
leachates
formed
exploratorily
characterized
using
a
range
chemical
analytical
tools
describe
degradation
leaching
processes.
These
techniques
covered
(a)
microplastic
analysis,
showing
substantial
liberation
further
increased
UV
exposure,
(b)
non-targeted
mass
spectrometric
characterization
leachates,
revealing
several
hundreds
features
with
typically
only
minor
agreement
between
exposure
corresponding
DCs,
(c)
target
analysis
71
organic
analytes,
which
15
could
be
detected
at
least
one
sample,
(d)
metal(loid)
revealed
toxic
metal(loid)s
enhanced
exposure.
A
data
comparison
US-EPA's
ToxVal
ToxCast
databases
showed
that
metals
additives
might
pose
health
environmental
concerns,
requiring
study
comprehensive
impact
assessments.
Abstract
This
Assessment
Update
by
the
Environmental
Effects
Panel
(EEAP)
of
United
Nations
Environment
Programme
(UNEP)
addresses
interacting
effects
changes
in
stratospheric
ozone,
solar
ultraviolet
(UV)
radiation,
and
climate
on
environment
human
health.
These
include
new
modelling
studies
that
confirm
benefits
Montreal
Protocol
protecting
ozone
layer
its
role
maintaining
a
stable
climate,
both
at
low
high
latitudes.
We
also
provide
an
update
projected
levels
UV-radiation
during
twenty-first
century.
Potential
environmental
consequences
intervention
scenarios
are
briefly
discussed,
illustrating
large
uncertainties
of,
for
example,
Stratospheric
Aerosol
Injection
(SAI).
Modelling
predict
that,
although
SAI
would
cool
Earth’s
surface,
other
factors
be
affected,
including
depletion
precipitation
patterns.
The
contribution
to
global
warming
replacements
ozone-depleting
substances
(ODS)
assessed.
With
respect
breakdown
products
chemicals
under
purview
Protocol,
risks
ecosystem
health
from
formation
trifluoroacetic
acid
(TFA)
as
degradation
product
ODS
currently
de
minimis
.
change
continue
have
complex
interactive
due
largely
activities.
UV-radiation,
weathering
factors,
microbial
action
contribute
significantly
plastic
waste
environment,
affecting
transport,
fate,
toxicity
plastics
terrestrial
aquatic
ecosystems,
atmosphere.
Sustainability
demands
drive
industry
innovations
mitigate
use
disposal
plastic-containing
materials.
Terrestrial
ecosystems
alpine
polar
environments
increasingly
being
exposed
enhanced
earlier
seasonal
snow
ice
melt
because
extended
periods
depletion.
Solar
contributes
decomposition
dead
plant
material,
which
affects
nutrient
cycling,
carbon
storage,
emission
greenhouse
gases,
soil
fertility.
In
loss
cover
is
increasing
area
oceans
with
possible
negative
phytoplankton
productivity.
However,
Arctic
Ocean
circulation
suggests
circulating
progressively
deeper
ocean
layers
less
UV
irradiation.
Human
modified
behaviour
patterns,
resulting
exposure
harmful
or
beneficial
depending
conditions
skin
type.
For
incidence
melanoma
has
been
associated
increased
air
temperature,
time
spent
outdoors
thus
UV-radiation.
Overall,
implementation
Amendments
mitigated
deleterious
Plastic
residues
have
emerged
as
a
significant
challenge
in
the
environmental
sector.
Microplastics,
which
are
plastic
fragments
smaller
than
5
mm,
ability
to
disperse
through
atmosphere,
oceans,
and
land,
posing
serious
threat
human
health
by
accumulating
food
chain.
However,
their
minuscule
size
makes
it
difficult
effectively
remove
them
from
environment
using
current
technologies.
This
work
provides
comprehensive
overview
of
recent
advancements
microplastic
detection
removal
For
methods,
we
discuss
commonly
used
techniques
such
microscopic
analysis,
thermal
mass
spectrometry,
spectroscopic
energy
spectrometry.
We
also
emphasize
importance
integrating
various
analytical
data-processing
achieve
efficient
nondestructive
microplastics.
In
terms
strategies,
explored
innovative
methods
technologies
for
extracting
microplastics
environment.
These
include
physical
like
filtration,
adsorption,
magnetic
separation;
chemical
coagulation–flocculation–sedimentation
photocatalytic
conversion;
bioseparation
activated
sludge
biodegradation.
highlight
promising
potential
converting
contaminants
into
high-value
chemicals.
Additionally,
identify
technical
challenges
suggest
future
research
directions
advocate
development
unified
standardized
guide
further
on
transformation
The Science of The Total Environment,
Journal Year:
2024,
Volume and Issue:
951, P. 175350 - 175350
Published: Aug. 6, 2024
Micro-nanoplastic
particulates
(MNPs)
have
been
identified
in
both
indoor
and
outdoor
environments.
From
these
real-world
exposures,
MNPs
human
fluids
organ
tissues,
including
the
placenta
breastmilk.
Laboratory
studies
are
capable
of
crossing
placental
barrier
depositing
fetal
tissues;
however,
it
remained
unclear
if
persist
offspring
tissues
after
birth.
Six
pregnant
Sprague-Dawley
rats
were
divided
equally
into
two
groups:
control
exposed
to
polyamide-12
(PA-12)
MNP
aerosols
(11.46
±
3.78
mg/m
Micro-nanoplastic
particulates
(MNPs)
have
been
identified
in
both
indoor
and
outdoor
environments.
From
these
real-world
exposures,
MNPs
human
fluids
organ
tissues,
including
the
placenta
breastmilk.
Laboratory
studies
are
capable
of
crossing
placental
barrier
depositing
fetal
tissues;
however,
it
remained
unclear
if
persist
offspring
tissues
after
birth.
Pregnant
Sprague-Dawley
rats
were
exposed
to
polyamide-12
(PA-12)
MNP
aerosols
(11.46
±
3.78
mg/m3)
over
an
average
4.35h
0.39
for
10
non-consecutive
days
between
gestational
day
(GD)
6
–
GD
19,
our
custom
rodent
exposure
chamber,
allowing
whole-body
inhalation.
Two-weeks
delivery
in-house,
(i.e.
lung,
liver,
kidney,
heart,
brain)
fixed
4%
paraformaldehyde,
sectioned,
stained
with
hematoxylin
eosin,
assessed
using
hyperspectral
dark-field
microscopy.
Overall,
pups
from
dams
weighted
20%
less
than
their
control
counterparts,
despite
a
15%
increase
maternal
weight.
PA-12
all
dams.
No
visualized
tissues.
These
findings
important
implications
translocation,
deposition,
maternal/fetal
health,
developmental
origins
health
disease.
Further
research
is
warranted
quantify
mass
biological
accumulation,
systemic
toxicity.
