A Single H2S-Releasing Nanozyme for Comprehensive Diabetic Wound Healing through Multistep Intervention
Ying Yin,
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Wentai Guo,
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Q Y Chen
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et al.
ACS Applied Materials & Interfaces,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 15, 2025
Diabetic
wound
healing
presents
a
significant
medical
challenge
and
requires
multistep
interventions
due
to
comprehensive
environments,
such
as
hyperglycemia,
bacterial
infection,
impaired
angiogenesis.
However,
current
are
complicated
need
on-demand
sequential
release
synergy
of
multicomponents.
Herein,
H2S-releasing
cascade
nanozyme
(FeS@Au),
which
is
composed
ultrasmall
gold
nanocluster
(AuNC)
loaded
on
ferrous
sulfide
nanoparticle
(FeSNP),
developed
single
component
regulate
glucose
level,
eliminate
promote
angiogenesis,
achieving
for
diabetic
treatment.
The
oxidase-like
activity
AuNC
catalyzes
into
gluconic
acid
H2O2,
not
only
lowers
the
local
level
but
also
decreases
pH
increases
H2O2
boost
peroxidase-like
FeSNP
generate
abundant
hydroxyl
radical
(reactive
oxygen
species,
ROS),
inducing
ferroptosis-like
death
in
drug-resistant
bacteria.
Additionally,
H2S
acidified
environment
upregulate
hypoxia-inducible
factor-1
enhance
vascularization
through
upregulating
expression
vascular
endothelial
growth
factor
(VEGF)
other
angiogenesis-related
genes,
reducing
damage
cells
caused
by
excessive
ROS
produced
nanozyme.
In
full-thickness
MRSA-infected
rat
model,
FeS@Au
significantly
eliminates
bacteria,
enhances
promotes
collagen
deposition,
accelerates
healing.
This
work
with
H2S-release
interventions,
providing
versatile
strategy
extensive
tissue
diabetes.
Language: Английский
Morin hydrate reduces survival and fertility, delays development and weakens lipid reserves in Aedes aegypti
Medical and Veterinary Entomology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 19, 2025
Abstract
The
Aedes
aegypti
mosquito
is
generally
associated
with
arboviruses
that
cause
yellow
fever,
dengue,
zika
and
chikungunya.
most
efficient
way
to
control
their
populations
through
application
in
breeding
sites
of
highly
toxic
insecticides
can
also
impact
non‐target
organisms
generate
resistant
populations.
Therefore,
the
use
compounds
desirable.
Morin
hydrate
has
broad
pharmacological
applications
based
on
its
antioxidant
potential,
addition
not
having
negative
effects
mammals.
objective
present
study
was
investigate
morin
A.
survival,
pupation
rate,
egg
laying,
triacylglycerol
reserves
expression
proteins
related
lipid
metabolism
24
h
after
exposure
larvae.
For
this,
rearing
media
containing
larvae
different
concentrations
were
formulated
evaluate
lethal
concentration.
Calculation
expected
showed
LC
25
52.692
μM,
40
111.121
50
174.775
75
575.083
μM
90
1685.936
μM.
Twenty‐four
hours
treatment
hydrate,
surviving
transferred
morin‐free
water
food,
rate
fertility
evaluated.
We
observed
an
increase
concentration
induced
a
dose‐dependent
reduction
doubled
time
survivors
reduced
number
eggs
laid
by
treated
females
during
larval
stage
approximately
30%
at
exceeding
100
From
(TAG)
stock
evaluated,
evaluating
involved
metabolism.
Larvae
TAG
17%,
while
175
there
more
than
33%
stocks,
500
61%.
Furthermore,
lipolytic
TAGL1
HSL
upregulated,
lipogenic
FAS1,
DGAT1
GPAT1
downregulated.
Insulin‐like
receptors
downregulated,
unlike
AKHr,
which
upregulated.
These
data
demonstrate
reduces
survival
affecting
did
exhibit
toxicity
toward
organisms,
demonstrating
interesting
potential
for
Language: Английский