Microplastics and Nanoplastics,
Journal Year:
2024,
Volume and Issue:
4(1)
Published: July 2, 2024
Abstract
Micro-
and
nanoplastics
(MNPs)
are
ubiquitous
environmental
pollutants
representing
a
concern
for
human
health.
MNPs
have
been
detected
in
placentas,
indicating
that
during
pregnancy
maternal
exposure
may
lead
to
placental
transfer
foetal
exposure,
with
potential
adverse
effects
on
early-life
development.
However,
comprehensive
risk
assessment
(RA)
framework,
specific
is
lacking.
Here,
we
propose
novel
roadmap
assist
the
development
of
an
health
RA
MNPs.
This
designed
based
established
chemical,
mixture,
particle,
MNP
strategies
aligned
standard
components
(problem
formulation,
hazard
identification,
characterisation,
assessment,
characterisation).
We
systematically
work
through
these
stages
identify
what
needed
progress
impacts
MNPs,
including
information
missing,
be
used
interim.
While
challenges
such
as
complex
physicochemical
properties
limited
toxicity
data
at
relevant
levels,
uncertainties
related
characterising
exposures
described
elsewhere,
our
discusses
how
specifically
impact
significance
presence
biological
samples
factors
influencing
bioaccumulation
transfer.
Additionally,
introduce
new
technology
readiness
levels
methods
detection
matrices.
Importantly,
this
review
integrates
broad
scope
into
one
document,
providing
unified
resource.
highlight
requirements
areas
targeted
research,
dose-response
relationships
assessing
By
addressing
gaps,
aims
advance
robust
ultimately
enhancing
understanding
mitigation
risks
associated
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: Jan. 2, 2025
Abstract
The
current
researches
on
microplastics
in
different
water
layers
of
reservoirs
remains
limited.
This
study
aims
to
investigate
the
within
a
source
reservoir.
Results
revealed
that
abundance
ranged
from
2.07
n/L
14.28
(reservoir,
water)
and
3
7.02
(river,
water),
while
varied
350
714
n/kg
(dw)
sediment)
299
1360
sediment).
average
surface,
middle,
bottom
were
6.83
n/L,
6.30
6.91
respectively.
Transparent
fibrous
smaller
than
<
0.5
mm
identified
as
predominant
fraction
with
Polypropylene
Polyethylene
being
prevalent
polymer
types.
Additionally,
pollution
load
index,
hazard
risk
index
calculated
for
sediments.
showed
surface
exhibited
moderate
level
sediments
posed
low
risk.
Both
middle
elevated
levels
due
higher
concentrations
polymers
significant
toxicity
indices.
presents
novel
findings
distribution
layers,
providing
crucial
data
support
understanding
migration
patterns
facilitating
prevention
efforts.
Environment International,
Journal Year:
2025,
Volume and Issue:
195, P. 109261 - 109261
Published: Jan. 1, 2025
Antimicrobial
resistance
(AMR)
and
environmental
degradation
are
existential
global
public
health
threats.
Linking
microplastics
(MPs)
AMR
is
particularly
concerning
as
MPs
pollution
would
have
significant
ramifications
on
controlling
of
AMR;
however,
the
effects
spread
genetic
mechanisms
bacteria
remain
unclear.
Herein,
we
performed
Simonsen
end-point
conjugation
to
investigate
impact
four
commonly
used
transfer
clinically
relevant
plasmids.
The
breadth
a
representative
pA/C_MCR-8
plasmid
across
bacterial
communities
was
confirmed
by
cell
sorting
16S
rRNA
gene
amplicon
sequencing.
Our
study
shows
that
exposure
found
promotes
rates
plasmids
up
200-fold,
when
compared
non-exposed
group
MP
concentrations
demonstrate
positive
correlation
with
higher
rates.
Furthermore,
show
induce
expression
plasmid-borne
conjugal
genes
SOS-linked
such
recA,
lexA,
dinB
dinD.
High-throughput
sequencing
broad
transmission
pA/C_MCR-8,
distribution
over
two
main
phyla,
Pseudomonadota
(50.0
%-95.0
%)
Bacillota
(0.4
%-2.0
%).
These
findings
definitively
link
emergencies
-
via
MPs,
tackle
AMR,
must
also
now
consider
plastic
utilisation
waste
management.
Environmental Technology & Innovation,
Journal Year:
2024,
Volume and Issue:
35, P. 103729 - 103729
Published: June 26, 2024
The
interaction
between
microplastics
(MPs)
and
pollutants
is
crucial
for
assessing
the
environmental
risk
of
MPs.
It
necessary
to
pay
attention
adsorption/desorption
behavior
antibiotics
on
MPs
due
their
potential
role
in
antibiotic
resistance.
When
MPs-loaded
are
ingested
by
organisms,
they
enter
gastrointestinal
tract
undergo
desorption,
leading
corresponding
toxic
effects.
Existing
literature
primarily
focuses
adsorption
behavior,
while
there
a
lack
systematic
generalizations
desorption
or
combined
effects
organisms.
Therefore,
this
article
provides
review
mechanisms,
biological
tract.
Desorption
suggests
that
characteristics
(aging
hydrophobicity)
components
fluid
(digestive
enzyme
species
pH)
can
also
have
effect
desorption.
Moreover,
summarizes
induced
MPs-antibiotics,
demonstrating
either
enhance
reduce
plants,
microorganisms,
aquatic
animals.
Since
methodological
uniformity
relevance
natural
environment
main
shortcomings
existing
literature,
future
research
should
focus
actual
water
given
region
studying
at
gene,
protein,
metabolic
levels.
This
direction
expected
provide
valuable
references
insights
evaluating
antibiotics.
