Responses of the intestinal microbiota to exposure of okadaic acid in marine medaka Oryzias melastigma
Journal of Hazardous Materials,
Год журнала:
2023,
Номер
465, С. 133087 - 133087
Опубликована: Ноя. 24, 2023
Язык: Английский
Effects of microorganisms, temperature and irradiation on the stability of dissolved okadaic acid and dinophysistoxin-1 in seawater
Marine Environmental Research,
Год журнала:
2025,
Номер
unknown, С. 106969 - 106969
Опубликована: Янв. 1, 2025
Язык: Английский
Effects of Dinoflagellate Toxins Okadaic Acid and Dinophysistoxin-1 and -2 on the Microcrustacean Artemia franciscana
Toxins,
Год журнала:
2025,
Номер
17(2), С. 80 - 80
Опубликована: Фев. 10, 2025
Harmful
algal
blooms
are
an
expanding
phenomenon
negatively
impacting
human
health,
socio-economic
welfare,
and
ecosystems.
Such
events
increase
the
risk
of
marine
organisms'
exposure
to
toxins
with
consequent
ecological
effects.
In
this
frame,
objective
study
was
investigate
ecotoxicological
potential
three
globally
distributed
dinoflagellate
(okadaic
acid,
OA;
dinophysistoxin-1,
DTX-1;
dinophysistoxin-2,
DTX-2)
using
Artemia
franciscana
as
a
model
organism
zooplankton.
Each
toxin
(0.1-100
nM)
evaluated
for
its
toxic
effects
in
terms
cyst
hatching,
mortality
nauplii
Instar
I
adults,
biochemical
responses
related
oxidative
stress.
At
highest
concentration
(100
nM),
these
significantly
increased
adults'
starting
from
24
h
(DTX-1),
48
(OA),
or
72
(DTX-2)
exposures,
DTX-1
being
most
potent
one,
followed
by
OA
DTX-2.
The
quantitation
stress
biomarkers
i.e.,
reactive
oxygen
species
(ROS)
production
activity
endogenous
antioxidant
defense
enzymes
(glutathione
S-transferase,
superoxide
dismutase,
catalase)
showed
that
only
DTX-2
ROS
production,
whereas
each
affected
different
profile.
general,
results
indicate
negative
impact
towards
A.
consequences
on
ecosystem.
Язык: Английский
Effects of okadaic acid on Pyropia yezoensis: Evidence from growth, photosynthesis, oxidative stress and transcriptome analysis
Journal of Hazardous Materials,
Год журнала:
2025,
Номер
491, С. 137902 - 137902
Опубликована: Март 11, 2025
Язык: Английский
Differential developmental effects and its potential mechanism of long-term exposure to TBBPA in two generations of marine medaka (Oryzias melastigma) during early life stages
Journal of Hazardous Materials,
Год журнала:
2025,
Номер
unknown, С. 137961 - 137961
Опубликована: Март 1, 2025
Язык: Английский
Spatial distribution of lipophilic shellfish toxins in seawater and sediment in the Bohai Sea and the Yellow Sea, China
Chemosphere,
Год журнала:
2024,
Номер
362, С. 142780 - 142780
Опубликована: Июль 5, 2024
Язык: Английский
Effects of the harmful algal bloom toxin, okadaic acid, on the mechanoreceptors of larval anchoveta (Engraulis ringens) under varying environmental conditions
Frontiers in Marine Science,
Год журнала:
2024,
Номер
11
Опубликована: Окт. 7, 2024
The
effect
of
the
combination
marine
toxins
produced
by
algal
blooms,
in
conjunction
with
varying
environmental
characteristics
on
organisms
water
column,
is
a
poorly
explored
research
field.
Pelagic
fish
species
commercial
importance,
such
as
anchoveta
(
Engraulis
ringens
)
central
Chile,
may
be
exposed
to
these
combined
factors
climate
change
scenario.
This
observed
from
documented
changes
length
upwelling
season,
frequency
events,
and
increased
atmospheric
rivers
affecting
southern
spawning
zone
this
species.
study
evaluated
integrity
hair
cells
neuromasts,
mechanosensory
organs
present
larvae,
under
exposure
different
combinations
bloom-produced
okadaic
acid
OA
(1
ng
mL
−1
),
two
temperature
(12
14°C),
salinity
treatments
(historically
more
frequent:
34
PSU-
12°C;
expected:
32
PSU
-
14°C).
Viable
were
counted
newly
hatched
larvae
Biobío
region,
Chile.
Results
showed
significant
decrease
average
number
viable
per
neuromast
(from
6.1
±
1.6
4.0
1.2)
lower
(32
PSU)
compared
normal
conditions.
Additionally,
seasonal
trend
was
fewer
7.4
1.2
4.4
1.1)
species’
reproductive
period
progressed.
modifications
also
resulted
up
70%
high
temperatures,
indicating
damage
influenced
toxin
along
synergistic
and/or
additive
role
temperature.
These
findings
reveal
how
lipophilic
acid,
harmful
interacts
abiotic
coastal
ecologically
socio-economically
important
organisms.
emphasizes
need
consider
multiple
when
studying
effects
toxins.
Язык: Английский
Intrinsic and extrinsic pathways of apoptosis induced by multiple antibiotics residues and ocean acidification in hemocytes of scallop Argopecten irradians irradians: An interactionist perspective
Ecotoxicology and Environmental Safety,
Год журнала:
2023,
Номер
269, С. 115806 - 115806
Опубликована: Дек. 12, 2023
The
increasing
prevalence
of
antibiotics
in
seawater
across
global
coastal
areas,
coupled
with
the
ocean
acidification
induced
by
climate
change,
present
a
multifaceted
challenge
to
marine
ecosystems,
particularly
impacting
key
physiological
processes
organisms.
Apoptosis
is
critical
adaptive
response
essential
for
maintaining
cellular
homeostasis
and
defending
against
environmental
threats.
In
this
study,
bay
scallops
Argopecten
irradians
were
exposed
multiple
(sulfamethoxazole,
tetracycline,
oxytetracycline,
norfloxacin,
erythromycin,
each
at
concentration
1
μg/L)
combined
with/without
acidic
(pH
7.6)
35
days.
single
interactive
effects
two
stressors
on
apoptosis
underlying
mechanisms
hemocytes
A.
determined
through
flow
cytometry
analysis,
comet
assay,
oxidative
stress
biomarkers
transcriptome
analysis.
Results
showed
that
could
be
triggered
either
AM
exposure
or
OA
exposure,
but
different
pathways.
Exposure
leads
mitochondrial
dysfunction
damage,
which
turn
triggers
via
series
events
both
intrinsic
extrinsic
Conversely,
while
similarly
apoptosis,
its
are
comparatively
subdued
predominantly
mediated
pathway.
Additionally,
synergistic
pronounced
damages
irradians.
Despite
evident
distress
potential
initiation
apoptotic
pathways,
actual
execution
appears
restrained,
might
attributed
an
energy
deficit
within
hemocytes.
Our
findings
underscore
constrained
tolerance
capacity
when
faced
stressors,
shed
light
ecotoxicity
antibiotic
pollution
under
prospective
change
scenarios.
Язык: Английский