International Journal of Biomedical Science and Engineering,
Год журнала:
2024,
Номер
12(2), С. 34 - 41
Опубликована: Дек. 16, 2024
Intervertebral
disc
degeneration
(IVDD)
is
a
prevalent
degenerative
disease
and
risk
factors
for
it
are
complex
diverse.
Due
to
limitations
in
observational
research,
identifying
causal
remains
challenging.
Mendelian
randomization
(MR),
leveraging
genetic
variation
as
an
instrumental
variable
(IV),
has
emerged
powerful
tool
study
associations,
overcoming
issues
of
confounding
bias
reverse
causality.
This
review
aims
summarise
the
progress
MR
exploring
relationship
between
IVDD
various
associated
factors.
By
summarizing
56
relevant
publications
retrieved
from
Pubmed
database,
this
found
significant
links
such
inflammatory
cytokines,
metabolism-related
molecules,
bacteria,
smoking,
high
bone
mineral
density.
Conversely,
no
associations
were
with
LDL,
total
cholesterol,
ApoB,
serum
uric
acid
levels,
physical
activity,
osteoporosis.
Finally,
not
only
supports
findings
but
also
opens
new
avenues
future
research
into
causes.
Frontiers in Immunology,
Год журнала:
2024,
Номер
15
Опубликована: Апрель 19, 2024
Considerable
evidence
has
unveiled
a
potential
correlation
between
gut
microbiota
and
spinal
degenerative
diseases.
However,
only
limited
studies
have
reported
the
direct
association
stenosis.
Hence,
in
this
study,
we
aimed
to
clarify
relationship
using
two-sample
mendelian
randomization
(MR)
approach.
Abstract
Background
Lumbar
degenerative
spondylolisthesis
(LDS),
characterized
as
degeneration
of
the
intervertebral
disc
and
structural
changes
facet
joints,
is
a
condition
with
varying
degrees
instability
that
may
lead
to
pain,
canal
stenosis,
subsequent
surgical
intervention.
However,
etiology
LDS
remains
inconclusive.
Gut
microbiome
dysbiosis
stimulate
systemic
inflammation
in
various
disorders.
role
such
upon
spine
health
under‐studied.
The
current
study
assessed
association
gut
symptomatic
patients
or
without
LDS.
Methods
A
cross‐sectional
analysis
within
framework
prospective
was
performed.
DNA
extracted
from
fecal
samples
collected
adult
(
n
=
21)
12).
Alpha
beta
diversity
differences
microbial
community
between
groups.
Taxon‐by‐taxon
identified
features
differential
relative
abundance
Subject
demographics
imaging
parameters
were
also
assessed.
Results
There
no
significant
group
age,
sex,
race,
body
mass
index,
smoking/alcohol
history,
pain
profiles,
spinopelvic
alignment,
Modic
p
>0.05).
subjects
had
significantly
higher
severity
0.018)
alpha
levels
compared
non‐LDS
0.002–0.003).
Significant
structure
observed
groups
0.046).
Subjects
exhibited
distinct
at
phylum
level,
Firmicutes
Bacteroidota
ratio
0.003).
Differential
six
taxa
two
groups,
demonstrating
an
increase
putative
pro‐inflammatory
bacteria
Dialister,
CAG‐352
)
decrease
anti‐inflammatory
Slackia
,
Escherichia‐Shigella
).
Conclusion
This
first
report
patients,
noting
bacterial
taxa.
work
provides
foundation
for
future
studies
addressing
disease.
Journal of Cosmetic Dermatology,
Год журнала:
2025,
Номер
24(1)
Опубликована: Янв. 1, 2025
ABSTRACT
Background
The
skin
microbiota,
a
complex
community
of
microorganisms
residing
on
the
skin,
plays
crucial
role
in
maintaining
health
and
overall
homeostasis.
Recent
research
has
suggested
that
alterations
composition
function
microbiota
may
influence
aging
process.
However,
causal
relationships
between
specific
biological
remain
unclear.
Mendelian
randomization
(MR)
analysis
provides
powerful
tool
to
explore
these
links
by
utilizing
genetic
variants
as
instrumental
variables,
thereby
minimizing
confounding
factors
reverse
causality
often
complicate
observational
studies.
Methods
We
utilized
two‐sample
MR
approach
with
population‐based
cross‐sectional
data
from
two
German
cohorts,
KORA
FF4
(
n
=
324)
PopGen
273).
In
total,
GWAS
summary
1656
samples
datasets
accelerated
age
were
analyzed
investigate
relationship
aging.
primary
was
performed
using
inverse
variance
weighted
(IVW)
method
random
effects
further
supported
MR‐Egger
regression,
Cochran's
Q
test,
range
sensitivity
analyses.
Results
revealed
for
acceleration
(BioageAccel),
IVW
identified
protective
certain
including
Alphaproteobacteria_Dry
p
0.046),
Asv033_sebaceous
0.043),
Burkholderiales_Moist
0.008),
Proteobacteria_Moist
0.042).
Similar
observed
0.045)
0.012)
median
analysis.
contrast,
Paracoccus_Moist
0.013)
Proteobacteria_Sebaceous
0.005)
associated
When
PhenoAge
outcome,
linked
like
Asv005_Dry
0.026),
ASV039_Dry
0.003),
Betaproteobacteria_Sebaceous
0.038),
Chryseobacterium_Moist
findings
also
ASV011_Dry
0.021),
ASV023_Dry
0.040),
Bacteroidales_Dry
0.022),
Enhydrobacter_Moist
0.002),
Rothia_Moist
0.038).
Conclusions
This
study
reveals
potential
confirm
findings,
randomized
controlled
trials
(RCTs)
are
necessary.
Journal of Inflammation Research,
Год журнала:
2025,
Номер
Volume 18, С. 4057 - 4073
Опубликована: Март 1, 2025
An
increasing
number
of
studies
have
demonstrated
a
strong
correlation
between
metabolism,
inflammation,
and
chronic
obstructive
pulmonary
disease
(COPD).
However,
it
remains
unclear
if
there
is
causal
relationship
these
factors.
This
study
employed
the
Mendelian
randomization
(MR)
approach
to
investigate
associations
factors
explore
mediating
roles
key
inflammatory
proteins.
MR
was
used
assess
plasma
metabolites,
proteins,
COPD.
Sensitivity
analyses
were
performed
verify
robustness
findings.
Mediation
analysis
conducted
proteins
in
metabolism-COPD
pathway.
We
constructed
protein-protein
interaction
(PPI)
network
explored
potential
mechanism
through
gene
ontology
(GO)
Kyoto
Encyclopedia
Genes
Genomes
(KEGG)
pathway
enrichment.
Single-cell
sequencing
transcriptome
datasets
for
auxiliary
validation.
Finally,
experimental
validation
using
human
lung
tissue.
identified
63
10
metabolite
ratios,
48
that
associated
with
COPD,
all
which
exhibited
relationships.
Furthermore,
three
as
mediators
metabolite-to-COPD
PPI
network,
GO
KEGG
enrichment
revealed
biological
pathways
they
involved.
Validation
expression
intermediary
tissue
NRXN3
expressed
endothelial
cells
exerted
protective
effect
against
COPD
development.
The
among
These
findings
offer
novel
insights
into
metabolism-inflammation-COPD
mechanisms,
suggesting
interventions
targeting
metabolic
processes
may
represent
promising
strategy
preventing
onset
or
progression
European Spine Journal,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 21, 2025
Although
previous
studies
have
indicated
a
potential
association
between
the
gut
microbiota
and
intervertebral
disc
degeneration
(IVDD),
precise
nature
of
this
relationship
remains
unclear.
The
objective
study
is
to
further
explore
causal
IVDD
using
bidirectional
Mendelian
randomization
approach,
with
aim
identifying
microbial
characteristics
associated
IVDD.
Using
data
from
genome-wide
(GWAS)
involving
412
species
227,388
controls
29,508
cases
Inverse
variance
weighted
(IVW)
was
used
as
primary
(MR)
analysis,
complemented
by
median,
MR-Egger
regression,
mode
simple
methods.
Extensive
sensitivity
analyses
were
performed
confirm
robustness
results
assess
heterogeneity
horizontal
pleiotropy.
This
revealed
positive
genetic
predisposition
6
types
through
IVW
method,
indicating
that
increased
levels
these
may
lead
higher
risk
Conversely,
found
negative
effects
on
IVDD,
suggesting
protective
effect
against
Reverse
MR
analysis
such
possibilities
1
5
relationships
microbiota.
Cochran's
Q
test,
MR-PRESSO
all
yielded
p-values
greater
than
0.05,
there
no
significant
or
pleiotropy
in
We
approach
identify
various
Our
findings
lay
foundation
for
exploration
pathogenesis
treatment
strategies
provide
new
research
biomarkers
IVDD-related
metabolic
Frontiers in Endocrinology,
Год журнала:
2024,
Номер
15
Опубликована: Март 12, 2024
The
intervertebral
disc
is
not
isolated
from
other
tissues.
Recently,
abundant
research
has
linked
homeostasis
and
degeneration
to
various
systemic
diseases,
including
obesity,
metabolic
syndrome,
diabetes.
Organokines
are
a
group
of
diverse
factors
named
for
the
tissue
origin,
adipokines,
osteokines,
myokines,
cardiokines,
gastrointestinal
hormones,
hepatokines.
Through
endocrine,
paracrine,
autocrine
mechanisms,
organokines
modulate
energy
homeostasis,
oxidative
stress,
balance
in
tissues
mediate
cross-organ
communication.
These
molecules
involved
regulation
cellular
behavior,
inflammation,
matrix
metabolism
under
physiological
pathological
conditions.
In
this
review,
we
aimed
summarize
impact
on
underlying
signaling
mechanism.
We
focused
regulatory
mechanisms
provide
basis
development
early
diagnostic
therapeutic
strategies
degeneration.
Research Square (Research Square),
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 18, 2024
Abstract
Background
Previous
studies
have
suggested
a
potential
link
between
the
gut
microbiome
and
radiculopathy,
but
causal
relationship
remains
unclear.
Therefore,
aim
of
this
study
was
to
determine
effect
on
radiculopathy
using
Mendelian
randomization
(MR)
approach
single
nucleotide
polymorphisms
(SNPs)
associated
with
as
instrumental
variables
Methods
Summary
data
from
genome-wide
association
microbiota
(the
MiBioGen)
FinnGen
biobank)
were
acquired.
The
inverse
variance
weighting
(IVW)
chosen
main
MR
Analysis
method.
weighted
median,
MR-Egger
regression,
model,
simple
model
provided
additional
supplements.
pleiotropy
residual
sum
outlier
(MR-PRESSO)
regression
performed
evaluate
horizontal
eliminate
single-nucleotide
(SNPs).
Cochran’s
Q-test
applied
for
heterogeneity
detection.
Results
We
identified
eight
microbial
taxa
that
causally
(P<0.05).
Cochrane
Q
test
produced
results
did
not
indicate
(P>0.05),
indicating
lack
statistical
significance.
Furthermore,
both
intercept
MR-PRESSO
global
indicated
our
findings
influenced
by
further
supporting
reliability
results.
In
reverse
analysis,
no
evidence
found
suggest
has
an
impact
microbiota.
Conclusion
four
protective
against
may
elevate
risk
condition.
Our
confirmed
thereby
providing
theoretical
foundation
development
targeted
prevention
strategies.
Keywords