Environmental Toxicology,
Journal Year:
2024,
Volume and Issue:
39(6), P. 3400 - 3409
Published: March 7, 2024
Abstract
Triphenyl
phosphate
(TPhP),
a
chemical
commonly
found
in
human
placenta
and
breast
milk,
has
been
shown
to
disturb
the
endocrine
system.
Our
previous
study
confirmed
that
TPhP
could
accumulate
interference
with
placental
lipid
metabolism
steroid
hormone
synthesis,
as
well
induce
endoplasmic
reticulum
(ER)
stress
through
PPARγ
trophoblast
JEG‐3
cells.
However,
molecular
mechanism
underlying
this
disruption
remains
unknown.
aimed
identify
role
of
PPARγ/CD36
pathway
TPhP‐induced
disruption.
We
increased
accumulation,
total
cholesterol,
low‐
high‐density
protein
progesterone,
estradiol,
glucocorticoid,
aldosterone
levels,
genes
related
hormones
including
3βHSD1
,
17βHSD1
CYP11A
CYP19
CYP21
.
These
effects
were
largely
blocked
by
co‐exposure
either
antagonist
GW9662
or
knockdown
CD36
using
siRNA
(siCD36).
Furthermore,
an
ER
inhibitor
4‐PBA
attenuated
effect
on
progesterone
glucocorticoid
siCD36
reduced
stress‐related
levels
induced
TPhP,
BiP,
PERK,
CHOP.
findings
suggest
may
also
play
synthesis
TPhP.
As
our
shed
light
pathway's
involvement
disturbance
biosynthesis
cells,
further
investigations
potential
impacts
function
following
birth
outcome
are
warranted.
Ecotoxicology and Environmental Safety,
Journal Year:
2024,
Volume and Issue:
276, P. 116327 - 116327
Published: April 15, 2024
Roxithromycin
(ROX),
a
commonly
used
macrolide
antibiotic,
is
extensively
employed
in
human
medicine
and
livestock
industries.
Due
to
its
structural
stability
resistance
biological
degradation,
ROX
persists
as
resilient
environmental
contaminant,
detectable
aquatic
ecosystems
food
products.
However,
our
understanding
of
the
potential
health
risks
humans
from
continuous
exposure
remains
limited.
In
this
study,
we
zebrafish
vertebrate
model
explore
developmental
toxicity
early
exposure,
particularly
focusing
on
effects
locomotor
functionality
CaP
motoneuron
development.
Early
induces
marked
embryos,
significantly
reducing
hatching
rates
(n=100),
body
lengths
increased
malformation
(n=100).
The
embryos
treated
with
corresponding
volume
DMSO
(0.1%,
v/v)
served
vehicle
controls
(veh).
Moreover,
adversely
affected
locomotive
capacity
observations
transgenic
Tg(hb9:eGFP)
revealed
axonal
loss
motor
neurons,
evident
through
reduced
or
irregular
(n=80).
Concurrently,
abnormal
apoptosis
ROX-exposed
intensified
alongside
upregulation
apoptosis-related
genes
(bax,
bcl2,
caspase-3a).
Single-cell
sequencing
further
disclosed
substantial
involved
differentiation
neuron
progenitor
cells
(ngn1,
olig2),
axon
development
(cd82a,
mbpa,
plp1b,
sema5a),
neuroimmunity
(aplnrb,
aplnra)
larvae
(n=30).
Furthermore,
defects
behavioral
deficits
induced
by
can
be
rescued
administering
ngn1
agonist
summary,
leads
early-life
abnormalities
neurons
behavior
hindering
inducing
apoptosis.
Toxicology and Applied Pharmacology,
Journal Year:
2023,
Volume and Issue:
482, P. 116789 - 116789
Published: Dec. 15, 2023
Esketamine,
a
widely
used
intravenous
general
anesthetic,
is
also
employed
for
obstetric
and
pediatric
anesthesia,
depression
treatment.
However,
concerns
regarding
esketamine
abuse
have
emerged.
Moreover,
the
potential
in
vivo
toxicity
of
on
growth
development
remains
unclear.
To
address
these
concerns,
we
investigated
effects
exposure
developmental
parameters,
cell
apoptosis,
gene
expression
zebrafish.
Esketamine
concentration-dependently
decreased
heart
rate
body
length
zebrafish
embryos/larvae
while
increasing
hatching
spontaneous
movement
frequency.
Developmental
retardation
larvae,
including
shallow
pigmentation,
small
eyes,
delayed
yolk
sac
absorption,
was
observed
following
altered
apoptosis-related
genes
heads,
primarily
downregulating
bax,
caspase9,
caspase3,
caspase6,
caspase7.
Intriguingly,
BTSA1,
Bax
agonist,
reversed
anti-apoptotic
decelerated
Collectively,
our
findings
suggest
that
may
hinder
embryonic
by
inhibiting
apoptosis
via
Bax/Caspase9/Caspase3
pathway.
best
knowledge,
this
first
study
to
report
lethal
We
elucidated
toxic
larvae
its
apoptotic
mechanisms.
Further
studies
are
warranted
evaluate
safety
animals
humans.
Environmental Toxicology,
Journal Year:
2024,
Volume and Issue:
39(6), P. 3400 - 3409
Published: March 7, 2024
Abstract
Triphenyl
phosphate
(TPhP),
a
chemical
commonly
found
in
human
placenta
and
breast
milk,
has
been
shown
to
disturb
the
endocrine
system.
Our
previous
study
confirmed
that
TPhP
could
accumulate
interference
with
placental
lipid
metabolism
steroid
hormone
synthesis,
as
well
induce
endoplasmic
reticulum
(ER)
stress
through
PPARγ
trophoblast
JEG‐3
cells.
However,
molecular
mechanism
underlying
this
disruption
remains
unknown.
aimed
identify
role
of
PPARγ/CD36
pathway
TPhP‐induced
disruption.
We
increased
accumulation,
total
cholesterol,
low‐
high‐density
protein
progesterone,
estradiol,
glucocorticoid,
aldosterone
levels,
genes
related
hormones
including
3βHSD1
,
17βHSD1
CYP11A
CYP19
CYP21
.
These
effects
were
largely
blocked
by
co‐exposure
either
antagonist
GW9662
or
knockdown
CD36
using
siRNA
(siCD36).
Furthermore,
an
ER
inhibitor
4‐PBA
attenuated
effect
on
progesterone
glucocorticoid
siCD36
reduced
stress‐related
levels
induced
TPhP,
BiP,
PERK,
CHOP.
findings
suggest
may
also
play
synthesis
TPhP.
As
our
shed
light
pathway's
involvement
disturbance
biosynthesis
cells,
further
investigations
potential
impacts
function
following
birth
outcome
are
warranted.