GPNMB is a biomarker for lysosomal dysfunction and is secreted via LRRK2-modulated lysosomal exocytosis
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Abstract
Genome-wide
association
studies
have
identified
Glycoprotein
Nmb
(
GPNMB
)
as
a
risk
factor
for
Parkinson’s
Disease.
The
allele
increases
transcription
and
protein
levels
in
the
CSF
highlighting
GPMNB
potential
biomarker
However,
lack
of
knowledge
GPNMB’s
function
mechanism
secretion
hindered
an
interpretation
secreted
levels.
In
this
study,
we
assessed
by
macrophages,
primary
cell
type
expressing
brain.
We
show
that
is
response
to
lysosomal
stress
via
exocytosis
highlight
Disease
LRRK2
strong
modulator
secretion.
Language: Английский
Unlocking the Potential: Semaglutide’s Impact on Alzheimer’s and Parkinson’s Disease in Animal Models
Current Issues in Molecular Biology,
Journal Year:
2024,
Volume and Issue:
46(6), P. 5929 - 5949
Published: June 13, 2024
Semaglutide
(SEM),
a
glucagon-like
peptide-1
receptor
agonist,
has
garnered
increasing
interest
for
its
potential
therapeutic
effects
in
neurodegenerative
disorders
such
as
Alzheimer’s
disease
(AD)
and
Parkinson’s
(PD).
This
review
provides
comprehensive
description
of
SEM’s
mechanism
action
preclinical
studies
these
debilitating
conditions.
In
animal
models
AD,
SEM
proved
beneficial
on
multiple
pathological
hallmarks
the
disease.
administration
been
associated
with
reductions
amyloid-beta
plaque
deposition
mitigation
neuroinflammation.
Moreover,
treatment
shown
to
ameliorate
behavioral
deficits
related
anxiety
social
interaction.
SEM-treated
animals
exhibit
improvements
spatial
learning
memory
retention
tasks,
evidenced
by
enhanced
performance
maze
navigation
tests
novel
object
recognition
assays.
Similarly,
PD,
demonstrated
promising
neuroprotective
through
various
mechanisms.
These
include
modulation
neuroinflammation,
enhancement
mitochondrial
function,
promotion
neurogenesis.
Additionally,
improve
motor
function
dopaminergic
neuronal
loss,
offering
disease-modifying
strategies.
Overall,
accumulating
evidence
from
suggests
that
holds
promise
approach
AD
PD.
Further
research
is
warranted
elucidate
underlying
mechanisms
translate
findings
into
clinical
applications
devastating
disorders.
Language: Английский
Is There a Place for Lewy Bodies before and beyond Alpha-Synuclein Accumulation? Provocative Issues in Need of Solid Explanations
International Journal of Molecular Sciences,
Journal Year:
2024,
Volume and Issue:
25(7), P. 3929 - 3929
Published: April 1, 2024
In
the
last
two
decades,
alpha-synuclein
(alpha-syn)
assumed
a
prominent
role
as
major
component
and
seeding
structure
of
Lewy
bodies
(LBs).
This
concept
is
driving
ongoing
research
on
pathophysiology
Parkinson’s
disease
(PD).
line
with
this,
alpha-syn
considered
to
be
guilty
protein
in
process,
it
may
targeted
through
precision
medicine
modify
progression.
Therefore,
designing
specific
tools
block
aggregation
spreading
represents
effort
development
disease-modifying
therapies
PD.
The
present
article
analyzes
concrete
evidence
about
significance
within
LBs.
this
effort,
some
dogmas
are
challenged.
concerns
question
whether
more
abundant
compared
other
proteins
Again,
occurrence
non-protein
constituents
scrutinized.
Finally,
LBs
causing
PD
questioned.
These
revisited
concepts
helpful
process
validating
which
proteins,
organelles,
pathways
likely
involved
damage
meso-striatal
dopamine
neurons
brain
regions
Language: Английский
No association between genetically predicted vitamin D levels and Parkinson’s disease
Zihao Wang,
No information about this author
Huan Xia,
No information about this author
Yunfa Ding
No information about this author
et al.
PLoS ONE,
Journal Year:
2024,
Volume and Issue:
19(11), P. e0313631 - e0313631
Published: Nov. 15, 2024
Background
Parkinson’s
disease
(PD)
is
a
neurodegenerative
disorder,
primarily
characterized
by
motor
impairments.
Vitamin
D
has
several
regulatory
functions
in
nerve
cell
survival
and
gene
expression
via
its
receptors.
Although
research
shown
that
vitamin
deficiency
prevalent
among
PD
patients,
the
causal
link
to
risk
remains
unclear.
This
study
aims
investigate
relationship
between
using
bidirectional
two-sample
Mendelian
randomization
(MR)
analysis
method.
Methods
applied
MR
explore
PD.
We
selected
statistically
significant
single
nucleotide
polymorphisms
(SNPs)
related
25-hydroxyvitamin
(25(OH)D)
as
instrumental
variables
(IVs),
ensuring
no
association
with
known
confounders.
The
used
GWAS
data
from
over
1.2
million
Europeans
across
four
major
published
datasets,
elucidating
genetic
correlation
levels
Results
identified
148
SNPs
associated
25(OH)D.
After
adjustment
for
confounding-related
SNPs,
131
remained
analysis.
Data
three
cohorts
revealed
25(OH)D
IVW
method
(
P
cohort1
=
0.365,
cohort2
0.525,
cohort3
0.117).
reverse
indicated
insufficient
evidence
of
causing
decreased
0.776).
Conclusion
first
use
results
indicate
are
not
significantly
causally
at
level.
Therefore,
future
studies
should
exercise
caution
when
investigating
risk.
While
direct
exists
PD,
this
does
preclude
potential
biomarker
diagnosis.
Furthermore,
larger-scale
longitudinal
necessary
evaluate
diagnostic
predictive
value
Language: Английский
Deep Learning-Based Method for Detecting Parkinson using 1D Convolutional Neural Networks and Improved Jellyfish Algorithms
Arogia Victor Paul M,
No information about this author
Sharmila Shankar
No information about this author
International journal of electrical and computer engineering systems,
Journal Year:
2024,
Volume and Issue:
15(6), P. 515 - 522
Published: June 7, 2024
Parkinson's
disease
(PD)
is
a
common
that
predominantly
impacts
the
motor
scheme
of
neural
central
scheme.
While
primary
symptoms
overlap
with
those
other
conditions,
an
accurate
diagnosis
typically
relies
on
extensive
neurological,
psychiatric,
and
physical
examinations.
Consequently,
numerous
autonomous
diagnostic
assistance
systems,
based
machine
learning
(ML)
methodologies,
have
emerged
to
assist
in
evaluating
patients
PD.
This
work
proposes
novel
deep
learning-based
classification
using
voice
recordings
people
into
normal,
idiopathic
Parkinson,
familial
Parkinson.
The
improved
jellyfish
algorithm
(IJFA)
utilized
for
hyper-parameter
selection
(HPS)
1D
convolutional
network
(1D-CNN).
proposed
technique
makes
use
significant
elements
1D-CNN
filter-based
feature
models.
Because
their
strong
performance
dealing
noisy
data,
algorithms
Relief,
mRMR,
Fisher
Score
were
chosen
as
top
choices.
Using
just
62
characteristics,
combination
relief
features
was
able
discriminate
between
people.
competence
IJFA
method
determined
through
specific
metrics.
attains
total
accuracy
98.6%,
which
comparatively
better
than
existing
techniques.
model
produced
around
9.5%
improvements
accuracy,
respectively,
when
compared
data
obtained
without
dimensionality
reduction.
Language: Английский