The Egyptian Journal of Aquatic Research,
Journal Year:
2023,
Volume and Issue:
49(3), P. 291 - 296
Published: Jan. 23, 2023
Heavy
metal
contamination
caused
by
human
activities
is
a
major
threat
to
aquatic
organisms.
Therefore,
28-day
trial
was
designed
evaluate
the
hematological
and
histological
changes
in
Labeo
rohita
exposed
chromium
chloride.
For
this
purpose,
240
fish
(Labeo
rohita)
were
randomly
selected
divided
into
four
groups.
Three
groups
treated
with
sublethal
waterborne
concentration
of
(37,
22,
11
mgL−1);
fourth
group
chromium-free
control
(0
mgL−1).
Results
demonstrated
that
noted
values
parameters,
such
as
mean
cell
hemoglobin,
red
blood
cells,
hematocrit,
platelets,
decreased
significantly
(P
<
0.05)
experimental
compared
control,
while
volume
white
cells
increased.
On
28th
day,
decline
observed
values.
The
severity
lesions
liver,
kidney,
gills
increased
duration
exposure
No
change
(T0),
T1
showed
more
severe
than
T2
T3.
Those
results
suggest
long-term
chloride
causes
adverse
effects
on
hematology
histology
carp,
rohita.
Environmental Toxicology and Pharmacology,
Journal Year:
2023,
Volume and Issue:
104, P. 104307 - 104307
Published: Nov. 1, 2023
The
present
study
aimed
to
quantify
the
concentration
levels
of
potentially
toxic
elements
(PTEs)
such
as
aluminum,
arsenic,
cadmium,
chromium,
copper,
nickel,
lead,
zinc,
and
mercury,
well
microplastics
occurrence
in
various
tissues
fish
seafood
species,
commercialized
Lower
Danube
River
Basin.
A
health
risk
assessment
analysis
was
performed
based
on
PTEs
muscle
tissue.
Estimated
daily
intake
(EDI),
target
hazard
quotient
(THQ),
index
(HI),
cancer
(TR)
were
calculated.
It
observed
that
species
within
category
registered
highest
PTEs.
For
instance,
tissue
bivalve
Mytilus
galloprovincialis
(from
Black
Sea),
value
case
Zn
(37.693
mg/kg),
presence
polystyrene
polymer
identified.
values
associated
with
EDI,
THQ,
HI,
TR
PTE
exposure
significantly
lower
than
1.
Antioxidants,
Journal Year:
2023,
Volume and Issue:
12(2), P. 524 - 524
Published: Feb. 19, 2023
Marine
pollution,
due
to
the
regular
discharge
of
contaminants
by
various
anthropogenic
sources,
is
a
growing
problem
that
imposes
detrimental
influences
on
natural
species.
Sharks,
because
diet
based
smaller
polluted
animals,
are
exposed
risk
water
contamination
and
subsequent
bioaccumulation
biomagnification.
Trace
elements
very
diffuse
pollutants
able
induce
oxidative
stress
in
variety
marine
organisms.
However,
date,
studies
sharks
rather
scarce
often
limited
mercury.
In
this
context,
present
study
aimed
analyze
accumulation
trace
their
putative
correlation
with
onset
an
status
muscle
lesser
spotted
dogfish
Scyliorhinus
canicula,
from
Central
Mediterranean
Sea.
Ecotoxicological
analysis
detected
presence
Pb,
As,
Cd,
Mn,
Zn,
Ni,
Cu,
Fe;
no
significant
differences
were
observed
between
sexes,
while
negative
was
found
Pb
animal
length.
Analysis
markers
showed
either
positive
or
respect
elements.
Lipid
peroxidation
(TBARS)
positively
correlated
SOD
enzyme
activity
negatively
Cu
Ni;
LDH
Fe
Pb.
Moreover,
correlations
leukocyte
count
Mn
as
well
activity,
also
observed.
The
data
suggested
that,
sharks,
may
affect
oxidant
antioxidant
processes
important
outcomes
for
physiology
health.
Comparative Biochemistry and Physiology Part C Toxicology & Pharmacology,
Journal Year:
2023,
Volume and Issue:
268, P. 109614 - 109614
Published: March 20, 2023
Fish
in
wild
are
often
faced
with
various
types
of
xenobiotics,
that
may
display
synergistic
or
antagonistic
effects.
In
this
study,
we
aim
to
examine
how
exposure
agrochemical
compound
(Bacilar)
and
cadmium
(CdCl2)
alone
combination
affect
biochemical
parameters
(lactate
dehydrogenase,
aspartate
aminotransferase,
alkaline
phosphatase,
gamma-glutamyl
transferase,
alanine
aminotransferase;
creatine
phosphokinase
(CKP),
cholinesterase)
oxidative
stress
(total
antioxidant
capacity,
catalase,
malondialdehyde
protein
carbonyl
concentrations)
freshwater
fish
Alburnus
mossulensis.
were
exposed
two
concentrations
Bacilar
(0.3,
0.6
mL
L-1)
1
mg
L-1
chloride
for
21
days.
Results
showed
accumulate
Cd
their
body,
the
highest
rate
individuals
Bacilar.
Both
xenobiotics
liver
induced
activation
enzymes
suggesting
hepatotoxic
effects,
greatest
impact
co-exposed
groups.
A
significant
decrease
hepatocyte's
total
capacity
indicates
collapse
defense
biomarkers
was
followed
by
increased
damage
lipids
proteins.
We
also
reported
altered
function
muscle
seen
as
decreased
activities
CKP
butyrylcholinesterase.
Overall,
our
results
point
toxicity
both
on
but
effects
bioaccumulation,
stress,
damage.
This
study
highlights
need
evaluating
use
agrochemicals
possible
additive
non-target
organisms.
