Heliyon,
Journal Year:
2024,
Volume and Issue:
10(2), P. e24339 - e24339
Published: Jan. 1, 2024
α-Mangostin
is
a
natural
xanthone
derivative
isolated
from
Camellia
atrophy
(CA),
commonly
known
as
Lichuan
black
tea
(LBT).
The
present
study
investigated
the
ameliorating
effect
and
mechanism
of
α-mangostin
on
alcoholic
gastric
ulcers
(GU)
in
rats.
In
vivo,
relieved
pathological
symptoms.
Moreover,
regulated
activation
nuclear
factor
(erythroid-derived
2)-like
2
(Nrf2)/heme
oxygenase
1
(HO-1)
κB
(NF-κB)/NLR
family
pyrin
domain
containing
3
(NLRP3)/caspase-1
pathways.
Reactive
oxygen
species
(ROS),
tumor
necrosis
factor-α
(TNF-α),
interleukin-1β
(IL-1β)
were
significantly
decreased
IL-10
increased,
microtubule-associated
protein
light
chain
(LC3)-II/LC3-I
ratio
was
p62
expression
decreased,
inducible
nitric
oxide
synthase
(iNOS)
cyclooxygenase
(COX-2)
down-regulated.
relevant
mechanisms
validated
using
GSE-1
RAW264.7
cells
an
vitro
model.
Furthermore,
increased
Ligilactobacillus
Muribaculum
abundance
well
propionic
acid
butyric
contents.
Therefore,
possesses
antioxidant
anti-inflammatory
properties,
remodels
intestinal
flora
dysbiosis
through
that
may
involve
regulation
Nrf2/HO-1
pathway
NF-κB/NLRP3/caspase-1
pathway.
It
also
increases
This
provides
novel
evidence
regarding
use
for
treating
GU.
Frontiers in Sustainable Food Systems,
Journal Year:
2024,
Volume and Issue:
7
Published: Feb. 7, 2024
Bone
protein
is
a
significant
secondary
product
of
the
meat
industry,
comprising
substantial
quantity
protein.
These
proteins
could
be
broken
down
through
enzymatic
hydrolysis
to
generate
antioxidant
peptides.
This
study
aimed
produce
peptides
from
bovine
bone
extract
by
utilizing
Flavourzyme
and
Protamex
optimizing
enzyme
amounts
time
using
Box–Behnken
design.
The
final
optimized
conditions
obtained
model
were
as
follows:
amount
was
1,100
U,
2,814
3.77
(h).
Bovine
hydrolysate
(BBEH)
purified
stepwise
ultrafiltration
membranes
with
molecular
cutoffs
5,
3,
1
kDa.
To
assess
capacity
fractions,
several
methods
used,
including
radical
scavenging
activity
“1,1-diphenyl-2-picrylhydrazyl
(DPPH),”
“2,2′-azino-bis
(3-ethylbenzothiazoline-6-sulfonic
acid)
(ABTS),”
metal
chelating
(MCA),
reducing
power
(RP),
thiobarbituric
acid
assay
(TBA).
results
indicated
that
fraction
weight
less
than
kDa
showed
activity,
48,
42,
50%
inhibition
rates
for
DPPH,
ABTS,
chelating,
respectively.
Using
size
exclusion
chromatography,
further
separated
into
five
sub-fractions:
Frac-I,
Frac-II,
Frac-III,
Frac-IV,
Frac-V.
Sub-Frac-III,
which
exhibits
DPPH
(55%)
0.8
at
700
nm,
six
sub-sub-fractions
reversed-phase
HPLC
(RP-HPLC)
based
on
hydrophobicity.
sub-sub-fraction
highest
value
sub-Fra-III-6,
exhibited
approximately
69.45%
activity.
sub-Fra-III-6
analyzed
LC–MS/MS,
identified
two
specific
peptides:
Ala-Pro-Phe
mass
333.12
Da
Asp-His-Val
369.14
Da.
are
likely
primary
might
have
crucial
role
in
capacity.
It
can
concluded
BBEH
valuable
source
natural
antioxidants
has
potential
serve
viable
resource
cultured
industry.
Frontiers in Nutrition,
Journal Year:
2023,
Volume and Issue:
10
Published: July 12, 2023
Background
Exceeding
50%
tuna
catches
are
regarded
as
byproducts
in
the
production
of
cans.
Given
high
amount
and
their
environmental
effects
induced
by
disposal
elimination,
valorization
nutritional
ingredients
from
these
by-products
receives
increasing
attention.
Objective
This
study
was
to
identify
angiotensin-I-converting
enzyme
(ACE)
inhibitory
(ACEi)
peptides
roe
hydrolysate
Skipjack
(
Katsuwonus
pelamis
)
evaluate
protection
functions
on
H
2
O
-induced
human
umbilical
vein
endothelial
cells
(HUVECs).
Methods
Protein
roes
with
ACEi
activity
prepared
using
flavourzyme,
were
isolated
ultrafiltration
chromatography
methods
identified
ESI/MS
Procise
Protein/Peptide
Sequencer
for
N-terminal
amino
acid
sequence.
The
mechanism
action
investigated
through
molecular
docking
cellular
experiments.
Results
Four
WGESF
(TRP3),
IKSW
(TRP6),
YSHM
(TRP9),
WSPGF
(TRP12),
respectively.
affinity
(TRP12)
ACE
−8.590,
−9.703,
−9.325,
−8.036
kcal/mol,
experiment
elucidated
that
significant
ability
mostly
owed
tight
bond
ACE’s
active
sites/pockets
via
hydrophobic
interaction,
electrostatic
force
hydrogen
bonding.
Additionally,
could
dramatically
elevate
Nitric
Oxide
(NO)
bring
down
endothelin-1
(ET-1)
secretion
HUVECs,
but
also
abolish
opposite
impact
norepinephrine
(0.5
μM)
NO
ET-1.
Moreover,
lower
oxidative
damage
apoptosis
rate
indicated
they
increase
content
superoxide
dismutase
(SOD)
glutathione
peroxidase
(GSH-Px)
decrease
generation
reactive
oxygen
species
(ROS)
malondialdehyde
(MDA).
Conclusion
beneficial
healthy
products
ameliorating
hypertension
cardiovascular
diseases.
Heliyon,
Journal Year:
2024,
Volume and Issue:
10(2), P. e24339 - e24339
Published: Jan. 1, 2024
α-Mangostin
is
a
natural
xanthone
derivative
isolated
from
Camellia
atrophy
(CA),
commonly
known
as
Lichuan
black
tea
(LBT).
The
present
study
investigated
the
ameliorating
effect
and
mechanism
of
α-mangostin
on
alcoholic
gastric
ulcers
(GU)
in
rats.
In
vivo,
relieved
pathological
symptoms.
Moreover,
regulated
activation
nuclear
factor
(erythroid-derived
2)-like
2
(Nrf2)/heme
oxygenase
1
(HO-1)
κB
(NF-κB)/NLR
family
pyrin
domain
containing
3
(NLRP3)/caspase-1
pathways.
Reactive
oxygen
species
(ROS),
tumor
necrosis
factor-α
(TNF-α),
interleukin-1β
(IL-1β)
were
significantly
decreased
IL-10
increased,
microtubule-associated
protein
light
chain
(LC3)-II/LC3-I
ratio
was
p62
expression
decreased,
inducible
nitric
oxide
synthase
(iNOS)
cyclooxygenase
(COX-2)
down-regulated.
relevant
mechanisms
validated
using
GSE-1
RAW264.7
cells
an
vitro
model.
Furthermore,
increased
Ligilactobacillus
Muribaculum
abundance
well
propionic
acid
butyric
contents.
Therefore,
possesses
antioxidant
anti-inflammatory
properties,
remodels
intestinal
flora
dysbiosis
through
that
may
involve
regulation
Nrf2/HO-1
pathway
NF-κB/NLRP3/caspase-1
pathway.
It
also
increases
This
provides
novel
evidence
regarding
use
for
treating
GU.