Estrogens
play
a
crucial
role
in
regulating
various
biological
responses
during
the
early
stages
of
neurodevelopment.
Benzophenone-2
(BP2),
widely
used
organic
ultraviolet
(UV)
filter,
has
been
proven
as
an
estrogenic
compound,
whereas
effects
BP2
on
neurodevelopment
remain
largely
unknown.
Here,
we
investigated
neurodevelopmental
toxicity
by
exposing
zebrafish
embryos
from
2
to
120
h
postfertilization
(hpf)
at
environmentally
relevant
concentrations.
We
demonstrated
that
life
exposure
induced
multiple
concentration-dependent
impairments
nervous
system,
including
hypoactivity,
abnormal
brain
morphology,
impaired
neurocyte
proliferation,
shortened
axon,
and
increased
apoptosis.
Moreover,
metabolomic
profiling
revealed
decrease
dopamine
(DA)
its
metabolites
BP2-treated
larvae.
Using
E2
treatment
morpholino
knockdown
assays,
provided
strong
genetic
evidence
BP2-induced
behavioral
disorders
were
associated
with
estrogen-dependent
signaling,
especially
estrogen
receptors
2a
2b
(esr2).
Subsequently,
transcriptomic
indicated
activation
esr2
further
inhibited
expression
LIM
homeobox
transcription
factor
1
β
(lmx1ba),
which
is
vital
for
normal
Consistently,
overexpression
lmx1ba
inhibition
obviously
alleviated
BP2-caused
neurotoxicity,
uncovering
seminal
toxicity.
Our
findings
provide
first
fish
can
induce
deficits
dysfunction
offer
novel
insights
into
mechanisms
well
other
emerging
benzophenones.
Frontiers in Aging Neuroscience,
Journal Year:
2025,
Volume and Issue:
16
Published: Jan. 7, 2025
Alzheimer's
disease
(AD)
is
a
complex
neurodegenerative
disorder,
with
amyloid-beta
(Aβ)
aggregation
playing
key
role
in
its
pathogenesis.
Aβ-induced
oxidative
stress
leads
to
neuronal
damage,
mitochondrial
dysfunction,
and
apoptosis,
making
antioxidative
strategies
promising
for
AD
treatment.
This
study
investigates
the
effects
of
hydrogen-rich
water
(HRW)
zebrafish
model.
Zebrafish
were
exposed
aluminum
chloride
induce
AD-like
pathology
then
treated
HRW
using
nanobubble
device.
Behavioral
assays,
ELISA,
Hematoxylin-eosin
(H&E)
staining,
reactive
oxygen
species
(ROS)
neutrophil
fluorescence
labeling
employed
assess
HRW's
impact.
Additionally,
16S
rRNA
sequencing
analyzed
effect
on
gut
microbiota.
can
significantly
improve
cognitive
impairment
depression-like
behavior
model,
reduce
Aβ
deposition
(p
<
0.0001),
regulate
liver
Soluble
epoxide
hydrolase
(sEH)
levels
0.05),
neuroinflammation,
stress.
Furthermore,
reduced
number
harmful
bacteria
linked
by
restoring
balance
microbiota
gut.
These
findings
suggest
that
has
potential
as
therapeutic
strategy
targeting
stress,
inflammation,
gut-brain
axis
modulation.
Toxics,
Journal Year:
2024,
Volume and Issue:
12(2), P. 160 - 160
Published: Feb. 18, 2024
Diflubenzuron
(DFB)
and
pyriproxyfen
(PPF)
are
larvicides
used
in
crops
to
control
insect
plagues.
However,
these
pesticides
known
impact
non-target
organisms
like
fish
mammals.
Here,
we
aimed
at
assessing
the
embryotoxicity
of
purified
DFB,
PPF,
their
mixtures
a
organism—zebrafish.
Zebrafish
embryos
were
exposed
different
concentrations
for
120
h:
0.025,
0.125,
0.25,
1.25,
2.5,
10
mg/L
PPF
while
0.025
+
DFB
(Mix
A),
0.125
B),
0.25
C)
DFB.
We
observed
mortality,
teratogenicity,
cardiotoxicity.
For
neurotoxicity
tests
evaluation
reactive
oxygen
species
(ROS)
levels
brain,
h
0.379
0.754
established
LC50
as
3.79
mg/L,
was
not
determinable.
Survival
hatching
affected
by
above
1.25
lower
pesticide
mixtures.
exposure
induced
types
malformations,
higher
number
malformations
mixtures,
suggesting
potentiating
effect.
Pesticides
diminished
avoidance
responses
increased
ROS
across
all
concentrations,
indicating
neurotoxicity.
Our
findings
underscore
detrimental
exposure,
spanning
from
biochemistry
morphology.
There
is
critical
need
reconsider
global
use
transition
more
ecologically
friendly
forms
pest
control,
raising
an
alarm
regarding
repercussions
on
human
animal
health
well-being.
Biomolecules,
Journal Year:
2024,
Volume and Issue:
14(8), P. 984 - 984
Published: Aug. 10, 2024
Pregnancy
is
a
particularly
vulnerable
period
for
the
growing
fetus,
when
exposure
to
toxic
agents,
especially
in
early
phases,
can
decisively
harm
embryo
development
and
compromise
future
health
of
newborn.
The
inclusion
various
chemical
substances
personal
care
products
(PCPs)
cosmetic
formulations
be
associated
with
disruption
damage
nervous
system.
Microplastics,
benzophenones,
parabens,
phthalates
metals
are
among
most
common
found
cosmetics
that
have
been
shown
induce
neurotoxic
mechanisms.
Although
neurotoxin
believed
minimal,
different
scenarios
suggest
these
neurotoxins
remain
threat.
Special
attention
should
paid
first
weeks
gestation,
critical
processes,
like
migration
proliferation
neural
crest
derived
cells,
start
form
ENS.
Importantly,
cross
placental
barrier
affect
embryo,
but
they
also
secreted
breast
milk,
so
babies
exposed
longer
periods,
even
after
birth.
In
this
review,
we
explore
how
contained
PCPs
may
role
pathogenesis
neurodevelopmental
disorders
neurodegenerative
diseases
and,
therefore,
congenital
enteric
aganglionosis
as
well
postnatal
motility
disorders.
Understanding
mechanisms
chemicals
used
their
neurotoxicity
crucial
determining
safety
use
during
pregnancy.
The
inclusion
of
various
chemical
substances
in
personal
care
products
(PCPs)
and
cosmetic
formulations
can
be
associated
with
disruption
damage
to
the
nervous
system.
Microplastics,
benzophenones,
parabens,
phthalates
metals
are
among
most
common
found
cosmetics
that
have
been
shown
induce
neurotoxic
mechanisms.
Although
neurotoxin
exposure
is
believed
minimal,
different
scenarios
suggest
these
neurotoxins
remain
a
threat.
Special
attention
should
paid
early
first
gestation
weeks,
when
critical
processes,
like
migration
proliferation
neural
crest
derived
cells
start
form
ENS.
Importantly,
cosmetic’s
cross
placenta
barrier
so
affect
future
embryo,
but
also
secreted
breast
milk,
babies
exposed
for
longer
periods,
even
after
birth.
In
this
review
we
explore
how
contained
PCPs
may
role
pathogenesis
neurodevelopment
disorders
neurodegenerative
diseases,
therefore
congenital
enteric
aganglionosis
as
well
postnatal
motility
disorders.
Understanding
mechanisms
chemicals
used
their
neurotoxicity
crucial
determining
safety
use
during
pregnancy.