Ecologica Montenegrina,
Journal Year:
2024,
Volume and Issue:
80, P. 106 - 127
Published: Dec. 5, 2024
Aquatic
insects
may
be
at
risk
due
to
microplastics,
which
are
new
pollutants
in
the
water
that
known
sink
and
accumulate
sediments.
In
this
study,
concentration,
type,
size,
color
of
MPs
surface
water,
sediments,
aquatic
were
investigated
rice
fields.
The
MP
concentrations
85.8
items/L.
sediment
0.43
items/g.
predatory
insects,
microplastics
discovered
0.59±0.50–17.00±17.00
items/individual,
scrapers
2.45±2.66–9.00±9.00
collector-gathering
2.45±2.66–25.00±25.99
items/individual.
Fibers
predominant
type
sediment,
insects.
most
common
sizes
<100
µm
>500
200-250
water.
dominant
colors
detected
blue
white/transparent
sediment.
Polyethylene
terephthalate
(PET),
polyvinyl
acetate
(PVAc),
polypropylene
glycol
(PPG),
polyethylene
(PEG),
poly
(acrylamide-co-acrylic
acid)
(poly
(AM-co-AA),
(vinyl
methyl
ether)
(PVME),
bis(2-ethylhexyl)
phthalate
(DEHP)
major
polymer
types
selected
particles.
results
study
showed
concentration
fields
is
relatively
high
insect
samples,
although
it
lower
samples.
This
data
assist
extending
our
knowledge
regarding
pollution
freshwater
systems
provides
a
baseline
for
future
monitoring
assessment
Scientific Reports,
Journal Year:
2023,
Volume and Issue:
13(1)
Published: Jan. 5, 2023
Abstract
The
toxicity
of
MPs
on
aquatic
creatures
has
been
extensively
studied,
but
little
attention
was
paid
to
terrestrial
organisms.
To
fill
this
gab,
we
conducted
a
series
experiments
using
Drosophila
as
model
organism
understand
whether
exposure
different
concentrations
(0.005,
0.05,
0.5
µg/ml)
polystyrene
microplastics
(PS-MPs)
beads
(2
µm
in
size)
can
impact
flies
feeding
activity,
digestion
and
excretion.
ability
distinguish
between
normal
PS-MPs
treated
food
media
tested
first,
then
evaluated
the
effects
7-day
short-term
intake,
mortality,
starvation
resistance,
fecal
pellet
count,
cellular
structure
mid
gut
cells.
results
revealed
that
really
differentiate
ignore
MPs-treated
food.
We
discovered
sex-specific
effects,
with
male
being
more
sensitive
PS-MPs,
all
males
dying
after
14
days
when
exposed
µg/ml
whereas
female
survived
more.
All
died
24
h
starvation.
Midgut
cells
showed
concentration-dependent
necrosis
apoptosis
response
PS-MPs.
Our
findings
provide
new
insights
into
organisms
giving
warning
management
measures
against
emission
must
be
taken.
The Science of The Total Environment,
Journal Year:
2024,
Volume and Issue:
919, P. 170592 - 170592
Published: Feb. 12, 2024
The
expanded
uses
of
bioplastics
require
understanding
the
potential
health
risks
associated
with
their
exposure.
To
address
this
issue,
Drosophila
melanogaster
as
a
versatile
terrestrial
in
vivo
model
was
employed,
and
polylactic
acid
nanoplastics
(PLA-NPLs),
proxy
for
bioplastics,
were
tested
material
model.
Effects
determined
larvae
exposed
4
days
to
different
concentrations
(25,
100,
400
μg/mL)
463.9
±
129.4
nm
PLA-NPLs.
Transmission
electron
microscopy
(TEM)
scanning
microscope
(SEM)
approaches
permitted
detection
PLA-NPLs
midgut
lumen
larvae,
interacting
symbiotic
bacteria.
Enzymatic
vacuoles
observed
carriers,
collecting
enabling
crossing
peritrophic
membrane,
finally
internalizing
into
enterocytes.
Although
no
toxic
effects
egg-to-adult
survival,
cell
uptake
causes
cytological
disturbances
formation
large
vacuoles.
translocation
across
intestinal
barrier
demonstrated
by
presence
hemolymph.
PLA-NPL
exposure
triggered
damage,
oxidative
stress,
DNA
inflammation
responses,
evaluated
via
wide
set
marker
genes.
Collectively,
these
structural
molecular
interferences
caused
generated
high
levels
stress
damage
hemocytes
larvae.
point
out
need
further
studies
aiming
deepen
before
adopting
safe
plastic
alternative.
Journal of Hazardous Materials,
Journal Year:
2024,
Volume and Issue:
477, P. 135299 - 135299
Published: July 22, 2024
The
increasing
accumulation
of
small
plastic
particles,
in
particular
microplastics
(>1
µm
to
5
mm)
and
nanoplastics
(<
1
µm),
the
environment
is
a
hot
topic
our
rapidly
changing
world.
Recently,
studies
were
initiated
better
understand
behavior
micro-
(MNP)
within
complex
matrices
like
soil,
as
well
their
characterization,
incorporation
potential
toxicity
terrestrial
biota.
However,
there
remains
significant
knowledge
gaps
understanding
wide-extent
impacts
MNP
on
invertebrates.
We
first
summarized
facts
global
pollution
generation
MNP.
Then,
we
focused
compiling
existing
literature
examining
consequences
exposure
diversity
investigated
biological
endpoints
(from
molecular
individual
levels)
compiled
get
comprehension
effects
according
different
factors
such
shape,
polymer
type,
organism,
concentration
duration.
sublethal
are
acknowledged
literature,
yet
no
general
conclusion
was
drawn
highly
dependent
characteristic
experimental
design.
Finally,
synthesis
highlighted
some
research
remediation
strategies,
protocol
standardize
ecotoxicological
studies.
Environment International,
Journal Year:
2024,
Volume and Issue:
187, P. 108713 - 108713
Published: May 1, 2024
Nanoplastics
(NPs)
are
increasingly
pervasive
in
the
environment,
raising
concerns
about
their
potential
health
implications,
particularly
within
aquatic
ecosystems.
This
study
investigated
impact
of
polystyrene
nanoparticles
(PSN)
on
zebrafish
liver
metabolism
using
liquid
chromatography
hybrid
quadrupole
time
flight
mass
spectrometry
(LC-QTOF-MS)
based
non-targeted
metabolomics.
Zebrafish
were
exposed
to
50
nm
PSN
for
28
days
at
low
(L-PSN)
and
high
(H-PSN)
concentrations
(0.1
10
mg/L,
respectively)
via
water.
The
results
revealed
significant
alterations
key
metabolic
pathways
exposure
groups.
metabolites
showed
different
responses
with
L-PSN
H-PSN.
A
total
2078
metabolite
features
identified
from
raw
data
obtained
both
positive
negative
ion
modes,
190
deemed
statistically
H-PSN
Disruptions
lipid
metabolism,
inflammation,
oxidative
stress,
DNA
damage,
amino
acid
synthesis
identified.
Notably,
induced
changes
building
blocks,
membrane-associated
biomarkers,
immune-related
metabolites,
while
was
associated
altered
antioxidant
injury.
For
first
time,
found
depolymerized
by
cytochrome
P450
enzymes.
Utilizing
an
analytical
approach
adverse
outcome
pathway
(AOP),
impaired
stress
have
been
as
potentially
conserved
events
(KEs)
exposure.
These
KEs
further
steatosis,
fibrosis
tissue
organ
level.
Ultimately,
this
could
significantly
biological
health.
highlights
PSN-induced
effects
emphasizing
need
a
better
understanding
risks
NPs
contamination
Environmental Pollution,
Journal Year:
2023,
Volume and Issue:
329, P. 121656 - 121656
Published: April 17, 2023
The
presence
of
plastic
waste
in
our
environment
has
continued
growing
and
become
an
important
environmental
concern.
Because
its
degradation
into
micro-
nanoplastics
(MNPLs),
MNPLs
are
becoming
pollutants
special
environmental/health
Since
ingestion
is
one
the
main
exposure
routes
to
MNPLs,
potential
effects
digestion
on
physicochemical/biological
characteristics
polystyrene
(PSNPLs)
were
determined.
results
indicated
a
high
tendency
digested
PSNPLs
agglomerate
differential
proteins
their
surface.
Interestingly,
showed
greater
cell
uptake
than
undigested
all
three
tested
lines
(TK6,
Raji-B,
THP-1).
Despite
these
differences
uptake,
no
toxicity
observed
except
for
assumed
unrealistic
exposures.
When
oxidative
stress
genotoxicity
induction
determined,
low
after
PDNPLs
not
ones.
This
that
ability
internalize
was
accompanied
by
hazard.
type
analysis
should
be
performed
with
other
varying
sizes
chemical
compositions.
Ecotoxicology and Environmental Safety,
Journal Year:
2024,
Volume and Issue:
282, P. 116760 - 116760
Published: July 18, 2024
The
study
on
the
influence
of
Natural
Organic
Matter
(NOM)
over
individual
and
combined
effects
different
nanomaterials
marine
species
is
pertinent.
current
explores
role
Extracellular
Polymeric
Substances
(EPS)
in
influencing
toxic
polystyrene
nanoplastics
(PSNPs)
viz.
aminated
(NH
Journal of Applied Toxicology,
Journal Year:
2022,
Volume and Issue:
43(2), P. 212 - 219
Published: May 30, 2022
Plastic
waste
in
different
environments
has
been
constantly
transforming
into
microplastic/nanoplastic
(MNPLs).
As
they
may
coexist
with
other
contaminants,
behave
as
vectors
that
transport
various
toxic
trace
elements,
including
metals.
Because
the
impact
of
exposure
to
such
matter
on
health
still
remains
elusive,
abundant
presence
MNPLs
lately
become
a
pressing
environmental
issue.
Researchers
have
utilizing
Drosophila
melanogaster
dynamic
vivo
model
genetic
research
for
some
time.
The
fly
also
recently
gained
wider
recognition
toxicology
and
nanogenotoxicity
studies.
use
nanoparticles
numerous
medical
consumer
products
raises
serious
concern,
since
many
vitro
studies
shown
their
potential.
However,
there
is
rather
limited
nanomaterial
genotoxicity
using
mice
or
mammalians
owing
high
costs
ethical
concerns.
In
this
context,
Drosophila,
thanks
its
tractability,
short
life
span,
entire
cycle
lasting
about
10
days,
distinct
developmental
stages,
renders
organism
an
excellent
testing
effects
mediated
by
MNPLs.
This
review
therefore
aims
encourage
entities
employ
experiments
focusing
at
molecular
level.