PubMed,
Journal Year:
2024,
Volume and Issue:
49(11), P. 1861 - 1868
Published: Nov. 28, 2024
Vascular
stents
are
an
essential
tool
in
cardiovascular
interventional
therapy,
and
their
demand
is
growing
with
the
increasing
incidence
of
diseases.
Compared
permanent
stents,
which
prone
to
in-stent
restenosis,
drug-eluting
may
cause
late
stent
thrombosis,
biodegradable
offer
advantages.
After
providing
early
radial
support
prevent
elastic
recoil,
gradually
degrade,
allowing
vessel
regain
its
natural
physiological
contractility
undergo
positive
remodeling.
A
review
current
mainstream
metal
magnesium-based,
iron-based,
zinc-based
alloys,
shows
promising
findings
both
preclinical
clinical
research.
Magnesium-based
exhibit
good
operability
low
thrombosis
rates,
but
limitations
include
rapid
degradation,
hydrogen
evolution,
significant
pH
changes
microenvironment.
Iron-based
demonstrate
excellent
mechanical
strength,
formability,
biocompatibility,
hemocompatibility,
slow
corrosion
rate
hampers
broader
application;
accelerating
degradation
remains
key.
Zinc-based
alloys
have
a
moderate
relatively
strength;
enhancing
strength
by
alloying
other
elements
main
improvement
direction
for
stents.
Water,
Journal Year:
2025,
Volume and Issue:
17(7), P. 1043 - 1043
Published: April 2, 2025
Endocrine
disruptors
such
as
17α-ethinylestradiol
pose
significant
ecological
risks
in
aquatic
environments.
This
study
assessed
the
catalytic
performance
of
Fe-
and
Cu-impregnated
delaminated
clays
(DCs)
layered
double
hydroxides
(LDHs)
a
Fenton-like
process
for
EE2
removal.
The
effects
key
parameters—including
hydrogen
peroxide
concentration,
initial
contaminant
load,
catalyst
dosage—were
analyzed
using
HPLC-QqTOF.
Delaminated
demonstrated
higher
removal
efficiencies
compared
to
(LDHs),
reaching
55%
with
Fe
47%
Cu,
while
LDHs
achieved
40%
33%
respectively.
Ecotoxicity
was
evaluated
bioassays
(L.
sativa,
S.
capricornutum,
D.
magna)
Ames
test.
Notably,
capricornutum
exhibited
100%
inhibition
at
highest
tested
IC50
values
11.2–12.4
Cu
31.5–32.7
Fe.
L.
sativa
inhibited
by
Cu-
Fe-impregnated
LDH/DC,
71.0
(DC-Cu),
56.6
(DC-Fe),
58.6
(LDH-Fe).
magna
17–75%
mortality
when
exposed
untreated
EE2,
LC50
confirmed
Cu’s
greater
toxicity.
test
indicated
no
mutagenic
effects.
Integrating
complementary
techniques
is
recommended
enhance
efficiency.
These
findings
highlight
need
optimize
operational
parameters
effective
17α-ethinylestradiol.
Critical Reviews in Environmental Science and Technology,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 24
Published: Dec. 2, 2024
Mineral-organic
matter
(OM)
associations
sequester
metal(loid)s
in
the
environment,
controlling
their
mobility
and
bioavailability
soils.
This
review
describes
processes
mechanisms
operating
at
interfaces
between
OM
mineral
phases
mineral-metal(loid)-OM
metal(loid)-OM-mineral
associations.
It
will
demonstrate
assumption
that
interact
with
"pure"
matrixes
soils
is
overly
simplistic
as
numerous
interactions
such
adsorption,
precipitation
incorporation
of
on
surfaces,
or
within
minerals
can
occur.
For
example,
multi-layer
organic
compounds
control
regulate
carbon
sequestration.
To
simplify
complex
metal(loid)-mineral-OM
interactions,
we
propose
five
nanometric
for
sequestration
by
mineral-OM
associations:
I.
heterogeneous
nucleation
metal(loid)s-bearing
nanomaterials
(NMs)
matrix,
II.
NMs
via
reduction
metal(loid)
species
OM/mineral
III.
transformation
preexisting
NMs,
IV.
inclusions
V.
diffusion
homogeneous
distribution
metals
matrix.
helps
to
develop
potential
materials
(a)
remediation
techniques
allow
effective
removal
metal
pollutants
from
water
soil
(b)
biomass
storage
sequestrate
stabilize
terrestrial
systems
thus
help
fight
current
climate
change.
Future
studies
need
identify
spatial
functional
complexity
structure
composition
associations,
which
adsorbed
incorporated
transform
during
multi-dynamic
processes.
