Gut microbially produced tryptophan metabolite melatonin ameliorates osteoporosis via modulating SCFA and TMAO metabolism
Yueqi Chen,
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Chuan Yang,
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Zihan Deng
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et al.
Journal of Pineal Research,
Journal Year:
2024,
Volume and Issue:
76(3)
Published: April 1, 2024
Abstract
Osteoporosis
(OP)
is
a
severe
global
health
issue
that
has
significant
implications
for
productivity
and
human
lifespan.
Gut
microbiota
dysbiosis
been
demonstrated
to
be
closely
associated
with
OP
progression.
Melatonin
(MLT)
an
important
endogenous
hormone
modulates
bone
metabolism,
maintains
homeostasis,
improves
Multiple
studies
indicated
MLT
participates
in
the
regulation
of
intestinal
gut
barrier
function.
However,
promising
effects
microbiota‐derived
remain
unclear.
Here,
we
found
resulted
tryptophan
disorder
decreased
production
MLT,
while
administration
could
mitigate
OP‐related
clinical
symptoms
reverse
dysbiosis,
including
diversity
microbiota,
relative
abundance
many
probiotics
such
as
Allobaculum
Parasutterella
,
metabolic
function
flora
amino
acid
nucleotide
energy
metabolism.
Notably,
significantly
increased
short‐chain
fatty
acids
trimethylamine
N‐oxide‐related
metabolites.
Importantly,
modulate
dynamic
balance
M1/M2
macrophages,
reduce
serum
levels
pro‐inflammatory
cytokines,
restore
gut‐barrier
Taken
together,
our
results
highlighted
roles
microbially
derived
progression
via
“gut‐bone”
axis
SCFA
which
may
provide
novel
insight
into
development
drug
treating
OP.
Language: Английский
Non-diabetic elderly populations: the MHR as a protective factor against bone abnormalities
Xiang Li,
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Manli Yan,
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Jiali Ji
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et al.
Frontiers in Endocrinology,
Journal Year:
2024,
Volume and Issue:
15
Published: June 7, 2024
Objectives
In
China,
osteoporosis
has
become
a
major
health
concern
among
elderly
population,
imposing
significant
burden
on
the
country’s
social
and
economic
systems.
The
monocyte
to
high-density
lipoprotein
ratio
(MHR)
been
currently
recommended
as
novel
marker
of
inflammation
oxidative
stress
associated
with
in
type
2
diabetes
mellitus
(T2DM).
However,
its
reliability
non-diabetic
populations
remains
unclear.
present
study
was
evaluate
association
between
MHR
population.
Methods
clinical
data
240
subjects
(115
group
125
normal
bone
group)
were
retrospectively
analyzed
all
statistical
analyses
performed
by
using
SPSS
26.0.
Results
Differences
age,
neutrophils,
lymphocytes,
monocytes,
MHR,
uric
acid,
creatinine,
triglycerides,and
cholesterol
found
be
statistically
two
groups.
A
binary
logistic
regression
model
conducted
including
UA
Cr
variables.
results
showed
that
age
an
independent
risk
factor
protective
for
abnormality
ROC
analysis
area
under
curve
predictive
effect
their
combined
test
0.623,
0.728
0.761,
respectively;
correlation
positively
correlated
lumbar
hip
BMD,
negatively
femoral
neck
ratio,
intertrochanteric
stem
showing
differences
(P<0.05).
Conclusions
For
population:
is
against
abnormalities
significantly
higher
than
abnormal
group.
Language: Английский
Melatonin Regulates Osteoblast Differentiation through the m6A Reader hnRNPA2B1 under Simulated Microgravity
Quan Sun,
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Liqun Xu,
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Zebing Hu
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et al.
Current Issues in Molecular Biology,
Journal Year:
2024,
Volume and Issue:
46(9), P. 9624 - 9638
Published: Sept. 1, 2024
Recent
studies
have
confirmed
that
melatonin
and
N6-methyladenosine
(m6A)
modification
can
influence
bone
cell
differentiation
formation.
Melatonin
also
regulate
a
variety
of
biological
processes
through
m6A
modification.
Heterogeneous
nuclear
ribonucleoprotein
A2/B1
(hnRNPA2B1)
serves
as
reader
In
this
study,
we
used
the
hindlimb
unloading
model
an
animal
loss
induced
by
simulated
microgravity
2D
clinorotation
to
simulate
environment
for
cells
on
ground.
We
found
hnRNPA2B1
was
downregulated
both
in
vitro
vivo
during
microgravity.
Further
investigations
showed
could
promote
osteoblast
overexpression
attenuated
suppression
discovered
expression
under
Moreover,
promotion
partially
dependent
hnRNPA2B1.
Therefore,
research
revealed,
first
time,
role
melatonin/hnRNPA2B1
axis
Targeting
may
be
potential
protective
strategy
against
microgravity-induced
osteoporosis.
Language: Английский
Mitochondria in skeletal system-related diseases
Liang Pei,
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Zizhen Yao,
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Liang Dong
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et al.
Biomedicine & Pharmacotherapy,
Journal Year:
2024,
Volume and Issue:
181, P. 117505 - 117505
Published: Nov. 4, 2024
Language: Английский
Assessment of the dalargin effect on the level of vitamin D and melatonin in blood serum in patients with malignant bone tumors and polymorbidity
O.V. Drobotun,
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N. Kolotilov,
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V.F. Konovalenko
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et al.
PAIN JOINTS SPINE,
Journal Year:
2024,
Volume and Issue:
14(1), P. 36 - 41
Published: April 30, 2024
Background.
Involved
in
many
cascades
of
biological
regulatory
reactions,
calcium,
vitamin
D
and
melatonin
create
a
single
metabolic
pattern,
maintaining
the
dynamic
balance
bone
tissue
homeostasis.
Nevertheless,
these
molecules,
as
structural
functional
elements
tissue,
play
crucial
role
various
cellular
processes
associated
with
oncogenesis
tumor
progression.
Synthetic
peptide
dalargin
has
wound
healing,
reparative,
anti-inflammatory,
antioxidant,
immunomodulatory,
anticarcinogenic,
antitumor,
antimetastatic
effects.
The
purpose
study
was
to
investigate
synthetic
neuropeptide
influence
on
dynamics
blood
serum
levels
part
treatment
algorithm
patients
malignant
tumors
lower
extremities
pelvis
polymorbidity
endoprosthetics.
Materials
methods.
included
control
(first)
group
main
(second)
clinical
observation
lesions.
content
measured
by
enzyme
immunoassay
using
reagent
kits
(No.
RE54021)
from
IBL-Hamburg
GmbH
(Germany).
Serum
levels
25-hydroxycalciferol
(25(OH)D)
were
determined
immunochemiluminescent
method
an
ARCHITECT
25-OH
Vitamin
Controls
automatic
analyzer.
Results.
In
who
received
dalargin,
more
pronounced
positive
established
normalization
25(ОН)D
levels,
there
no
exacerbation
concomitant
diseases.
contrast
data
did
not
receive
where
it
used,
relapses
or
metastases
during
14
months.
A
comparison
6–7
months
12–14
after
shows
tendency
recovery
indicators
only
additionally
treated
(p
<
0.01).
Conclusions.
showed
possibility
increase
effectiveness
primary
burden
influencing
serum.
Language: Английский