Environment International,
Journal Year:
2019,
Volume and Issue:
135, P. 105418 - 105418
Published: Dec. 24, 2019
The
emergence
of
novel
per-
and
polyfluoroalkyl
substances
(PFASs)
has
enabled
researchers
to
determine
their
bioaccumulation,
which
is
important
for
understanding
internal
doses
environmental
risks.
Here,
the
first
time,
we
report
on
occurrence
a
PFAS,
p-perfluorous
nonenoxybenzenesulfonate
(OBS)
in
wild
crucian
carp
explore
its
tissue
distribution
bioaccumulation.
highest
levels
OBS
were
observed
blood
(mean/median:
144/133
ng/ml)
with
mean
tissue/blood
ratios
(TBRs)
consistently
below
1,
ranging
from
0.090
(muscle)
0.644
(liver).
This
followed
pattern
perfluorooctane
sulfonate
(PFOS),
implying
that
distributions
similar.
calculated
tissue-specific
LogBAF
values,
except
muscle,
3.78
(gill)-4.14
(blood)
over
regulatory
bioaccumulation
criterion
(Log
value:
3.70)
indicated
obvious
bioaccumulative
potency
carp.
Molecular
docking
estimated
binding
energies
at
-8.5
-9.0
kcal/mol
corroborated
strong
interactions
human
serum
albumin
liver
fatty
acid
protein,
even
though
lower
than
those
PFOS.
This,
some
extent,
explained
Considering
potential,
large
production
volume,
wide
use,
further
investigation
into
risk
vivo
toxicology
required.
Environment International,
Journal Year:
2023,
Volume and Issue:
175, P. 107951 - 107951
Published: April 27, 2023
Legacy
per-
and
polyfluoroalkyl
substances
(PFASs)
have
elicited
much
concern
because
of
their
ubiquitous
distribution
in
the
environment
potential
hazards
they
pose
to
wildlife
human
health.
Although
an
increasing
number
effective
PFAS
alternatives
are
available
market,
these
bring
new
challenges.
This
paper
comprehensively
reviews
how
PFASs
bind
transport
proteins
(e.g.,
serum
albumin,
liver
fatty
acid
organic
transporters),
nuclear
receptors
peroxisome
proliferator
activated
receptors,
thyroid
hormone
reproductive
receptors)
membranes
cell
membrane
mitochondrial
membrane).
Briefly,
hydrophobic
fluorinated
carbon
chains
occupy
binding
cavities
target
proteins,
groups
form
hydrogen
bonds
with
amino
residues.
Various
structural
features
such
as
chlorine
atom
substitution,
oxygen
insertion
a
branched
structure,
introduce
variations
chain
length
hydrophobicity,
which
potentially
change
affinity
for
endogenous
proteins.
The
toxic
effects
mechanisms
action
legacy
can
be
demonstrated
compared
using
models.
In
future
studies,
vitro
experiments
silico
quantitative
structure-activity
relationship
modeling
should
better
integrated
allow
more
reliable
toxicity
predictions
both
alternative
PFASs.
The
deleterious
health
implications
of
perfluoroalkyl
and
polyfluoroalkyl
substances
(PFAS)
are
widely
recognized.
Females,
in
contrast
to
males,
exhibit
unique
pathways
for
PFAS
exposure
excretion,
leading
complex
outcomes.
status
females
is
largely
influenced
by
hormone-related
processes.
have
been
reported
be
associated
with
various
aspects
female
health,
including
reproductive
system
disorders
pregnancy-related
diseases.
In
this
article,
we
provide
insights
into
the
correlations
between
female-prevalent
Current
epidemiological
toxicological
evidence
has
demonstrated
that
adverse
effects
on
primarily
attributed
disruption
hypothalamic-pituitary-gonadal
(HPG)
axis
hormonal
homeostasis.
However,
these
findings
do
not
sufficiently
elucidate
intricate
associations
specific
Furthermore,
autoimmune
disorders,
another
category
more
prevalent
women
compared
men,
require
additional
investigation.
Immune
biomarkers
pertinent
observed
exposure,
although
insufficient
substantiate
relations.
Further
thorough
exploration
encompassing
studies
essential
elucidating
inherent
influence
human
pathologies.
Additionally,
comprehensive
investigations
issues
beyond
their
functions
essential.
International Journal of Molecular Sciences,
Journal Year:
2021,
Volume and Issue:
22(12), P. 6276 - 6276
Published: June 11, 2021
This
review
is
a
survey
of
recent
advances
in
studies
concerning
the
impact
poly-
and
perfluorinated
organic
compounds
aquatic
organisms.
After
brief
introduction
on
(PFCs)
features,
an
overview
monitoring
reported
illustrating
ranges
recorded
concentrations
water,
sediments,
species.
Besides
presenting
general
concepts
defining
bioaccumulative
potential
its
indicators,
biodistribution
PFCs
described
taking
consideration
different
tissues/organs
investigated
species
as
well
differences
between
wild
or
under
controlled
laboratory
conditions.
The
use
bioindicators
for
biomonitoring
are
discussed
data
summarized
table
reporting
number
monitored
their
total
concentration
function
Moreover,
biomolecular
effects
taxonomically
illustrated.
In
final
paragraph,
main
findings
have
been
possible
solutions
to
environmental
threats
posed
by
environment
discussed.
The Science of The Total Environment,
Journal Year:
2022,
Volume and Issue:
845, P. 157255 - 157255
Published: July 8, 2022
Per
and
Polyfluoroalkyl
Substances
(PFAS)
are
a
diverse
group
of
man-made
chemicals
with
range
industrial
applications
which
widespread
in
the
environment.
They
structurally
but
comprise
common
chemical
feature
at
least
one
(though
usually
more)
perfluorocarbon
moiety
(-CnF2n-)
attached
to
functional
such
as
carboxylic
or
sulphonic
acid.
The
strength
Carbon-Fluorine
bond
means
compounds
do
not
break
down
easily
can
thus
bioaccumulate.
PFAS
high
concern
regulators
public
due
their
potential
toxicity
persistence.
At
exposure
levels,
have
been
implicated
harmful
effects
on
human
environmental
health,
particularly
problems
in/with
development,
cholesterol
endocrine
disruption,
immune
system
function,
oncogenesis.
However,
most
toxicology
studies
use
far
higher
levels
than
generally
found
Additionally,
since
type
exposure,
used,
organisms
tested
all
vary
between
studies,
so
results.
Traditional
ecotoxicology
may
identify
environmentally
relevant
exposures.
Here
we
conduct
review
omics-based
using
laboratory
ecotoxicological
methodologies
show
that
biochemical
response
pathways
identified
multiple
studies.
A
major
pathway
was
pentose
phosphate
shunt
pathway.
Such
molecular
markers
sublethal
will
greatly
benefit
accurate
effective
risk
assessments
ensure
new
regulations
consider
full
health
receptors.
Environmental Science & Technology,
Journal Year:
2021,
Volume and Issue:
56(10), P. 6113 - 6122
Published: April 14, 2021
Perfluoroalkyl
sulfonates
(PFSAs),
perfluoroalkyl
carboxylates
(PFCAs),
and
emerging
alternatives
precursors
of
these
compounds
were
determined
in
tissues
finless
porpoise
(Neophocaena
asiaeorientalis
sunameri)
collected
from
East
China
Sea
2009-2010
2018-2019.
The
median
hepatic
concentrations
poly-
substances
(PFASs),
including
6:2
chlorinated
polyfluorinated
ether
sulfonate
(6:2
Cl-PFESA),
8:2
(8:2
2,3,3,3-tetrafluoro-2-propanoate
(HFPO-DA),
4,8-dioxa-3H-perfluorononanoate
(ADONA)
16.2,
2.16,
<
LOQ
(limit
quantification)
ng/g
ww
(wet
weight),
respectively.
legacy
substances,
perfluorooctanesulfonate
(PFOS),
perfluorooctanoate
(PFOA),
86.9
1.95
ww,
liver
Cl-PFESA,
HFPO-DA,
perfluorohexanesulfonate
(PFHxS)
increased
with
time
between
Further,
PFOA
showed
a
declining
trend
porpoise,
whereas
PFOS
its
precursor
(i.e.,
perfluorooctane
sulfonamide
[FOSA])
an
increasing
Analysis
PFASs
nine
different
tissues/organs
liver,
heart,
intestine,
spleen,
kidney,
stomach,
lung,
muscle,
skin)
revealed
similar
distribution
pattern
Cl-PFESA
PFOS;
however,
the
tissue
patterns
differed
HFPO-DA
PFOA.
PFAS
kidney
or
lower
than
prototype
≈
PFOA),
implying
slow
renal
excretion
as
that
PFASs.
estimates
body
burdens
porpoises
suggested
comparable
accumulation
PFSAs
PFCAs.
This
study
provides
novel
information
on
temporal
trends
marine
mammals
China.