Background:
Per-
and
polyfluoroalkyl
substances
(PFAS)
are
synthetic
chemicals
that
persist
in
the
environment
can
accumulate
humans,
leading
to
adverse
health
effects.
MicroRNAs
(miRNAs)
emerging
biomarkers
advance
understanding
of
mechanisms
PFAS
effects
on
human
health.
However,
little
is
known
about
associations
between
exposures
miRNA
alterations
humans.
Objective:
To
investigate
concentrations
levels
children.
Methods:
Data
from
two
distinct
cohorts
were
utilized:
176
participants
(average
age
16.6
years;
75.6%
female)
Teen-Longitudinal
Assessment
Bariatric
Surgery
(Teen-LABS)
cohort
United
States,
64
6.5
years,
39.1%
Rhea
study,
a
mother-child
Greece.
assessed
plasma
samples
both
studies.
Associations
individual
examined
after
adjusting
for
covariates.
Additionally,
cumulative
mixtures
evaluated
using
an
exposure
burden
score.
Ingenuity
Pathways
Analysis
was
employed
identify
potential
disease
functions
PFAS-associated
miRNAs.
Results:
Plasma
associated
with
476
miRNAs
Teen-LABs
study
13
(FDR
p
<
0.1).
Specifically,
consistently
decreased
miR-148b-3p
miR-29a-3p
cohorts.
Pathway
analysis
indicated
PFAS-related
linked
numerous
chronic
pathways,
including
cardiovascular
diseases,
inflammatory
conditions,
carcinogenesis.
Conclusion:
Through
screenings
independent
cohorts,
this
identified
novel
revealed
involvement
these
several
cancer
inflammation-related
pathways.
Further
studies
warranted
enhance
our
relationships
risks,
as
and/or
mediators
complex
Journal of Exposure Science & Environmental Epidemiology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 24, 2025
Abstract
Background
Perfluorooctanoic
acid
(PFOA)
and
Perfluorooctanesulfonic
Acid
(PFOS)
are
synthetic
substances
with
long
half-lives.
Their
presence
is
widespread
pervasive,
they
noted
for
their
environmental
persistence.
Research
has
shown
these
chemicals
to
be
associated
dyslipidaemia,
although
few
studies
have
considered
the
long-term
associations
in
general
population.
Objectives
The
aim
of
this
study
was
consider
longitudinal
cross-sectional
lipid
phenotypes.
Methods
We
investigated
association
total
cholesterol
(TC),
low-density
lipoprotein
(LDL),
high-density
(HDL),
triglycerides
(TG),
cholesterol:
ratio
(TC:HDL),
a
healthy
unselected
British
population
twins
(
n
=
2069),
measured
at
three
timepoints
between
1996
2014.
Results
Serum
levels
PFOA
PFOS
decreased
over
time
during
period.
demonstrate
across
serum
both
PFOS,
finding
positive
TC
(PFOA:β
0.51,
p
1.9e−07;
PFOS:β
0.24,
3.8e−05)
LDL
0.61,
1.7e−11;
0.42,
1.6e−14),
consistent
negative
HDL
(β
−0.12,
0.003)
−0.25,
<2e−16).
also
observe
PFAS
lipids
all
timepoints.
Impact
remain
persistent
environment,
despite
regulations,
due
structural
properties,
leaving
humans
open
exposure.
There
less
understanding
how
chronic
low
exposure
chemicals,
particularly
within
an
population,
may
impact
health
outcomes.
This
reports
18-year
window
5
phenotypes,
highlighting
that
falling
levels,
lead
hyperlipidaemia.
further
investigate
understand
time-dependent
effects,
demonstrating
persist.
work
aids
our
on
effect
Current Issues in Molecular Biology,
Journal Year:
2025,
Volume and Issue:
47(2), P. 98 - 98
Published: Feb. 5, 2025
Per-
and
polyfluoroalkyl
substances
(PFASs)
are
persistent
highly
bioaccumulative
emerging
environmental
contaminants
of
concern
that
display
significant
toxic
carcinogenic
effects.
An
PFAS
is
PFESA-BP2,
a
ether
sulfonic
acid
found
in
drinking
water
the
serum
humans
animals.
While
PFESA-BP2-induced
liver
intestinal
toxicity
has
been
demonstrated,
toxicological
mechanisms
potential
PFESA-BP2
have
remained
relatively
understudied.
Here,
we
studied
how
different
doses
affect
gene
activity
related
to
risk
cancer
such
as
hepatocellular
carcinoma
(HCC)
mice
exposed
once
daily
through
oral
gavage
for
seven
days.
analysis
key
hepatic
pathways
suggested
increased
hepatotoxicity
result
exposure.
Increased
oxidative
stress
response
was
associated
with
all
concentrations
Liver
pathways,
including
PXR/RXR
activation
fibrosis,
showed
dose-dependent
alteration
primarily
at
low
doses,
suggesting
an
inflammation
injury.
Additionally,
HCC-specific
cancer,
particularly
doses.
Low-dose
exposure
(0.03
0.3
mg/kg-day)
HCC
carcinogenesis,
indicated
by
tumor-related
HCC-associated
pathways.
In
contrast,
these
were
inhibited
high
(3.0
6.0
mg/kg-day),
accompanied
HCC-suppressive
The
development
mechanistically
linked
signaling
HIF,
EGF,
NOTCH4,
HGF,
VEGF.
Biomarkers
risk,
prognoses,
diagnoses
also
identified
Overall,
our
findings
on
hepatotoxic
pathway
patterns
suggest
increases
development,
Life,
Journal Year:
2025,
Volume and Issue:
15(4), P. 573 - 573
Published: April 1, 2025
Per-
and
polyfluoroalkyl
substances
(PFASs)
are
among
the
persistent
organic
pollutants
characterized
by
their
persistence
in
environment,
high
mobility,
adverse
impact
not
only
on
ecosystem
but
also
human
health.
The
biggest
challenges
biomonitoring
low
concentrations
of
PFASs
biological
matrices
presence
matrix
interferents
samples.
combination
liquid
chromatography
with
tandem
mass
spectrometry
(LC-MS/MS)
solid-phase
extraction
(SPE)
as
a
sample
preparation
technique
appears
to
be
most
suitable
solution
for
achieving
desired
selectivity
sensitivity
PFAS
determination.
aim
this
review
is
describe
possible
sources
PFASs,
various
matrices,
analytical
methods
determining
different
using
pretreatment
techniques
complex
samples,
well
health
risks
associated
exposure.
studied
include
PFOA
PFOS,
which
frequently
detected
such
plasma,
serum,
breast
milk.
average
range
from
1.0
2.6
ng.mL−1
1.9
2.4
0.4
3.1
For
were
2.0–4.0
ng.mL−1,
3.7–4.6
3.6–4.8
milk,
respectively.
significant
effects
exposure
long-chain
(such
PFOS)
lipid
disorders,
hypertension,
diabetes
mellitus,
thyroid
infertility,
cancer,
obesity,
autism,
neurodevelopmental
issues,
cardiovascular
diseases,
kidney
liver
disorders.
It
utmost
importance
monitor
exposure,
predict
toxicity,
develop
effective
strategies
mitigate
potential
Research Square (Research Square),
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 6, 2025
Abstract
Per-
and
polyfluoroalkyl
substances
(PFAS)
pose
significant
environmental
health
concerns,
necessitating
their
efficient
accurate
identification
to
facilitate
eventual
mitigation
from
the
environment.
Surface-enhanced
Raman
spectroscopy
(SERS)
enables
highly
sensitive
precise
molecular
identification,
but
trace-level
detection
of
chemicals
fluorescence
interference
remain
challenges.
Here,
we
present
a
uniform
3D
AgNP@Si
substrate
for
SERS,
leveraging
photon
counting
achieve
susceptible
low-fluorescence
detection.
This
approach
PFAS,
including
perfluorooctanoic
acid
(PFOA)
perfluorooctane
sulfonate
(PFOS),
at
concentrations
as
low
10−15
M,
with
Rhodamine
6G
(R6G)
used
model
analyte.
Additionally,
quantitative
analysis
demonstrated
strong
logarithmic
relationship
between
intensity
analyte
concentration,
high
correlation
coefficients
(R2
=
0.98
R6G
0.97
PFOA
PFOS).
pioneering
offers
promising
alternative
current
analytical
techniques
monitoring
PFAS
other
contaminants
in
BMJ Open,
Journal Year:
2024,
Volume and Issue:
14(7), P. e084836 - e084836
Published: July 1, 2024
Purpose
The
Obesity
and
Disease
Development
Sweden
(ODDS)
study
was
designed
to
create
a
large
cohort
body
mass
index
(BMI),
waist
circumference
(WC)
changes
in
weight
WC,
relation
morbidity
mortality.
Participants
ODDS
includes
4
295
859
individuals,
2
165
048
men
130
811
women,
Swedish
cohorts
national
registers
with
information
on
assessed
once
(2
555
098
individuals)
or
more
(1
740
761
individuals),
total
constituting
7
733
901
assessments
at
the
age
of
17–103
years
1963–2020
(recalled
as
1911).
Information
WC
is
available
152
089
212
658
out
whom
108
795
have
repeated
(in
512
273
assessments).
mortality
retrieved
from
registers,
follow-up
until
end
2019–2021,
varying
between
registers.
Findings
date
Among
all
(of
which
85%
are
objectively
measured),
median
year,
BMI
(IQR)
1985
(1977–1994)
2001
(1991–2010)
19
(18–40)
30
(26–36)
women
22.9
(20.9–25.4)
kg/m
23.2
(21.2–26.1)
women.
Normal
(BMI
18.5–24.9
)
present
67%
64%
obesity
(BMI≥30
5%
10%
time
first
measured
self-reported
current
assessment
emigration,
death
31.4
(21.8–40.8)
19.6
(9.3–29.0)
During
follow-up,
283
244
123
457
died.
Future
plans
sample
size
long
Study
will
provide
robust
results
anthropometric
measures
risk
common
diseases
causes
deaths,
novel
findings
subgroups
rarer
outcomes.