Toxics,
Journal Year:
2024,
Volume and Issue:
12(7), P. 492 - 492
Published: July 4, 2024
The
lockdown
imposed
to
combat
the
COVID-19
pandemic
produced
a
historic
fall
in
air
pollution
cities
like
Barcelona.
This
exceptional
situation
offered
unique
context
which
examine
effects
of
pollutants
on
human
health.
present
study
aims
determine
and
compare
oxidative
stress
biomarkers
Th1/Th2
inflammatory-related
cytokines
healthy
individuals
first
during
then
six
months
after
easing
restrictions
mobility.
A
prospective
representative
sample
58
healthy,
non-smoking
adults
was
carried
out.
During
post-easing
restrictions,
blood
samples
were
drawn
measure
percentage
eosinophils,
levels
assessed
by
multiplex
assay
(BioRad
Laboratories
S.A.,
Marnes-la-Coquette,
France),
8-isoprostane,
glutathione
peroxidase
activity,
myeloperoxidase
(Cayman
Chemical
Co.,
Ann
Arbor,
MI,
USA),
assess
their
value
as
stress.
Six
mobility
increases
8-isoprostane
(p
<
0.0001),
IL-1β
=
0.0013),
IL-1ra
0.0110),
IL-4
IL-13
G-CSF
0.0007),
CCL3
0.0001)
recorded,
along
with
reductions
IFN-γ
0.0145),
TNFα
IP-10
IL-2
IL-7
basic
FGF
CCL4
CCL5
0.0001).
No
significant
differences
observed
rest
analyzed.
reduction
environmental
significantly
lowered
stress,
systemic
inflammation,
Th2-related
people.
Sustainability,
Journal Year:
2024,
Volume and Issue:
16(2), P. 522 - 522
Published: Jan. 7, 2024
Tyre
particles
are
generated
by
shear
forces
between
the
tread
and
road
or
volatilisation.
abrasion
(wear)
contributes
from
one-third
to
half
of
microplastics
unintentionally
released
into
environment.
The
major
part
ends
up
in
soil,
a
considerable
amount
is
aquatic
environment,
small
percentage
becomes
airborne.
Nevertheless,
tyre
5–30%
transport
particulate
matter
(PM)
emissions.
This
corresponds
approximately
5%
total
ambient
PM
particle
mass
size
distribution
peak
at
around
20
100
μm,
with
second
2–10
μm
range.
A
nucleation
mode
has
been
reported
some
studies.
absolute
levels
depend
on
tyre,
vehicle,
characteristics,
but
also
environmental
conditions
driving
style.
Most
emission
factors
literature
based
data
prior
year
2000.
We
aggregated
recent
studies
found
mean
110
mg/km
per
vehicle
68
mg/km/t
for
passenger
cars
(based
300
measurements).
Based
limited
number
studies,
PM10
emissions
were
1.4–2.2
tyre.
On
other
hand,
order
1010
#/km
ratio
was
be
2.5%
average.
Finally,
PM2.5
calculated
40%.
Various
mitigation
measures
pollution
could
envisaged;
most
direct
limitation
rate,
as
proposed
European
Commission
Euro
7
regulation.
Other
regulatory
initiatives
discussed.
Journal of Hazardous Materials,
Journal Year:
2024,
Volume and Issue:
471, P. 134401 - 134401
Published: April 25, 2024
Tire
wear
particles
(TWP)
stand
out
as
a
major
contributor
to
microplastic
pollution,
yet
their
environmental
impact
remains
inadequately
understood.
This
study
delves
into
the
cocktail
effects
of
TWP
leachates,
employing
molecular,
cellular,
and
organismal
assessments
on
diverse
biological
models.
Extracted
in
artificial
seawater
analyzed
for
metals
organic
compounds,
leachates
revealed
presence
polyaromatic
hydrocarbons
4-tert-octylphenol.
Exposure
(1.5
1000
mg
peq
L−1)
inhibited
algae
growth
induced
zebrafish
embryotoxicity,
pigment
alterations,
behavioral
changes.
Cell
painting
uncovered
pro-apoptotic
changes,
while
mechanism-specific
gene-reporter
assays
highlighted
endocrine-disrupting
potential,
particularly
antiandrogenic
effects.
Although
heavy
like
zinc
have
been
suggested
players
leachate
toxicity,
this
emphasizes
water-leachable
compounds
primary
causative
agents
observed
acute
toxicity.
The
findings
underscore
need
reduce
pollution
aquatic
systems
enhance
regulations
governing
highly
toxic
tire
additives.
pose
significant
threat,
contributing
releasing
harmful
chemical
contaminants.
unveils
hazardous
nature
introducing
detrimental
ecosystems.
Identified
pollutants,
notably
hydrocarbons,
induce
impede
growth,
alter
behavior,
disrupt
signaling
pathways.
These
revelations
emphasize
material
affecting
life
at
multiple
levels,
posing
risks
health
both
ecosystems
and,
potentially,
human
well-being.
Enhancing
our
understanding
mechanisms
is
crucial
mitigating
these
safeguarding
from
deleterious
Aquatic Toxicology,
Journal Year:
2025,
Volume and Issue:
281, P. 107292 - 107292
Published: Feb. 16, 2025
Tyre
and
road
wear
particles
(TRWPs)
are
a
significant
yet
often
underestimated
source
of
environmental
pollution,
contributing
to
the
accumulation
microplastics
complex
mixture
contaminants
in
both
terrestrial
aquatic
ecosystems.
Despite
their
prevalence,
long-term
evolutionary
effects
TRWPs,
beyond
immediate
toxicity,
remain
largely
unknown.
In
this
study,
we
assessed
mutagenicity
non-biting
midge
Chironomus
riparius,
upon
exposure
urban
sediment
collected
from
runoff
sedimentation
basin.
To
assess
extent
mutagenic
over
multiple
generations,
combined
model
with
short-term
mutation
lines
(MALs)
subsequent
whole
genome
sequencing
(WGS).
The
study
was
conducted
five
concentrations
0.5
%
10
%.
Our
results
reveal
that
significantly
increases
rates
compared
control
groups
by
50
%,
independent
concentration
(0.5
%).
infer
potential
causal
processes,
comparative
analysis
using
known
mutational
spectra
previous
studies.
This
comparison
showed
profiles
induced
clearly
clustered
those
caused
Benzo[a]Pyrene
(BaP),
Polycyclic
Aromatic
Hydrocarbon
(PAH).
A
comprehensive
chemical
characterization
confirmed
considerable
impact
traffic-related
contamination,
including
PAHs
primarily
petrogenic
origin.
suggests
PAH-like
compounds
present
sediments
may
play
role
observed
effects.
shows
influence
alter
exposed
organisms,
potentially
compromising
genomic
stability
shaping
trajectories.
These
genetic
changes
can
have
profound
on
population
dynamics
ecosystem
health,
underlining
importance
understanding
consequences
pollution.
Additionally,
show
comparatively
analysing
provide
valuable
insights
into
processes.
Environment International,
Journal Year:
2024,
Volume and Issue:
190, P. 108885 - 108885
Published: July 14, 2024
There
is
currently
limited
data
on
the
potential
effects
of
tire
and
road
wear
particles
(TRWP)
human
health.
TRWP
include
fragments,
but
also
materials,
dust,
adsorbed
gaseous
pollutants
different
types
inclusions
that
could
affect
their
hazard
profiles.
Due
to
availability
lower
complexity,
ground
(TP)
are
often
used
in
toxicological
studies.
However,
this
makes
it
difficult
draw
firm
conclusions
about
actual
TRWP.
Here,
we
compared
vitro
profile
TP
emissions
similar
size
collected
from
traffic.
For
purpose,
were
separately
incubated
with
alveolar
macrophages
for
24
h,
cellular
response
was
evaluated
terms
cytotoxicity,
proinflammatory
oxidative
stress.
Both
induced
neither
significant
cytotoxicity
nor
stress,
triggered
a
concentration-dependent
response,
as
evidenced
by
increased
TNF-α
production.
The
level
production
slightly
higher
than
TP,
independent
particle
dose.
All
all,
pulmonary
toxicity
be
due
primarily
tread
only
marginally
other
components
(i.e.
dust
…).
Although
these
preliminary
results
need
confirmed
further
analysis,
they
useful
manufacturers
safer-by-design
tires.