Vascular
risk
factors
(VRFs)
and
cerebral
small
vessel
disease
(cSVD)
are
common
in
patients
with
Alzheimer
(AD).
It
remains
unclear
whether
this
coexistence
reflects
shared
or
a
mechanistic
relationship
vascular
amyloid
pathologies
have
independent
synergistic
influence
on
subsequent
AD
pathophysiology
preclinical
stages.
We
investigated
links
between
VRFs,
cSVD,
levels
(Aβ1-42)
their
combined
effect
downstream
biomarkers,
that
is,
CSF
hyperphosphorylated
tau
(P-tau181),
atrophy,
cognition.
This
retrospective
study
included
nondemented
participants
(Clinical
Dementia
Rating
<
1)
from
the
European
Prevention
of
Alzheimer's
(EPAD)
cohort
assessed
VRFs
Framingham
score
(FRS)
cSVD
features
MRI
using
visual
scales
white
matter
hyperintensity
volumes.
After
preliminary
linear
analysis,
we
used
structural
equation
modeling
(SEM)
to
create
"cSVD
severity"
latent
variable
assess
direct
indirect
effects
FRS
severity
Aβ1-42,
P-tau181,
gray
volume
(baseline
longitudinal),
cognitive
performance
longitudinal).
A
total
1,592
were
evaluated
(mean
age
=
65.5
±
7.4
years;
56.16%
F).
observed
positive
associations
all
(all
p
0.05)
negative
association
Aβ1-42
(β
-0.04
0.01).
All
negatively
associated
0.05).
Using
SEM,
fully
mediated
(indirect
effect:
β
-0.03
0.01),
also
when
omitting
amyloid-related
markers.
significant
P-tau181
0.12
0.03),
baseline
longitudinal
-0.10
0.03;
-0.12
0.05),
-0.16
0.03)
through
Aβ1-42.
In
large
population,
our
findings
suggest
is
mediator
affects
neurodegeneration
impairment.
provide
evidence
indirectly
affecting
pathogenesis
AD,
highlighting
importance
considering
burden
memory
clinics
for
evaluation
as
an
early
window
intervention.
These
results
stress
role
cerebrovascular
pathology
key
biomarkers
accurate
design
anti-amyloid
clinical
trials
offer
new
perspectives
patient
stratification.
Biomedicines,
Год журнала:
2022,
Номер
10(9), С. 2261 - 2261
Опубликована: Сен. 13, 2022
Alzheimer's
disease
(AD)
is
the
most
common
cause
of
neurodegenerative
dementia,
whilst
Parkinson's
(PD)
a
movement
disorder.
These
two
disorders
share
accumulation
toxic
proteins
as
pathological
hallmark.
The
lack
definitive
disease-modifying
treatments
for
these
neurogenerative
diseases
has
led
to
hypothesis
new
pathogenic
mechanisms
target
and
design
potential
therapeutic
approaches.
recent
observation
that
glymphatic
system
supposed
be
responsible
cerebrospinal
fluid
into
brain
clearance
metabolic
waste
study
its
involvement
in
pathogenesis
classic
proteinopathies.
Aquaporin-4
(AQP4),
water
channel
located
endfeet
astrocyte
membrane,
considered
primary
driver
system,
defective
AQP4-mediated
drainage
been
linked
objective
present
review
body
knowledge
links
AD
PD
other
lifestyle
factors
such
sleep
deprivation
exercise
may
influence
function.
We
will
also
focus
on
neuroimaging
approaches
could
identify
marker
detect
changes.
NeuroImage,
Год журнала:
2022,
Номер
257, С. 119329 - 119329
Опубликована: Май 21, 2022
In
this
article,
we
provide
an
overview
of
current
neuroimaging
methods
for
studying
perivascular
spaces
(PVS)
in
humans
using
brain
MRI.
recent
years,
increasing
number
studies
highlighted
the
role
PVS
cerebrospinal/interstial
fluid
circulation
and
clearance
cerebral
waste
products
their
association
with
neurological
diseases.
Novel
strategies
techniques
have
been
introduced
to
improve
quantification
investigate
function
morphological
features
physiological
pathological
conditions.
After
a
brief
introduction
on
anatomy
physiology
PVS,
examine
latest
technological
developments
quantitatively
analyze
structure
We
describe
applications,
advantages,
limitations
these
methods,
providing
guidance
suggestions
acquisition
protocols
analysis
that
can
be
applied
study
vivo.
Finally,
review
human
across
normative
lifespan
context
disorders.
Magnetic Resonance in Medical Sciences,
Год журнала:
2024,
Номер
23(3), С. 268 - 290
Опубликована: Янв. 1, 2024
More
than
5
years
have
passed
since
the
Diffusion
Tensor
Image
Analysis
ALong
Perivascular
Space
(DTI-ALPS)
method
was
proposed
with
intention
of
evaluating
glymphatic
system.
This
is
handy
due
to
its
noninvasiveness,
provision
a
simple
index
in
straightforward
formula,
and
possibility
retrospective
analysis.
Therefore,
ALPS
adopted
evaluate
system
for
many
disorders
studies.
The
purpose
this
review
look
back
discuss
at
moment.
Neurobiology of Disease,
Год журнала:
2024,
Номер
192, С. 106426 - 106426
Опубликована: Фев. 6, 2024
The
term
"glymphatic"
emerged
roughly
a
decade
ago,
marking
pivotal
point
in
neuroscience
research.
glymphatic
system,
glial-dependent
perivascular
network
distributed
throughout
the
brain,
has
since
become
focal
of
investigation.
There
is
increasing
evidence
suggesting
that
impairment
system
appears
to
be
common
feature
neurodegenerative
disorders,
and
this
exacerbates
as
disease
progression.
Nevertheless,
factors
contributing
dysfunction
across
most
disorders
remain
unclear.
Inflammation,
however,
suspected
play
role.
Dysfunction
can
lead
significant
accumulation
protein
waste
products,
which
trigger
inflammation.
interaction
between
inflammation
cyclical
potentially
synergistic.
Yet,
current
research
limited,
there
lack
comprehensive
models
explaining
association.
In
perspective
review,
we
propose
novel
model
inflammation,
impaired
function,
interconnected
vicious
cycle.
By
presenting
experimental
from
existing
literature,
aim
demonstrate
that:
(1)
aggravates
dysfunction,
(2)
exacerbated
progression,
(3)
progression
promotes
Finally,
implication
proposed
discussed.
Topographical
distribution
of
white
matter
hyperintensities
(WMH)
are
hypothesized
to
vary
by
cerebrovascular
risk
factors.
We
used
an
unbiased
pattern
discovery
approach
identify
distinct
WMH
spatial
patterns
and
investigate
their
association
with
different
etiologies.
International Journal of Molecular Sciences,
Год журнала:
2022,
Номер
23(3), С. 1184 - 1184
Опубликована: Янв. 21, 2022
Human
lifestyle
and
dietary
behaviors
contribute
to
disease
onset
progression.
Neurodegenerative
diseases
(NDDs),
considered
multifactorial
disorders,
have
been
associated
with
changes
in
the
gut
microbiome.
NDDs
display
pathologies
that
alter
brain
functions
a
tendency
worsen
over
time.
are
worldwide
health
problem;
US
alone,
12
million
Americans
will
suffer
from
by
2030.
While
etiology
may
vary,
microbiome
serves
as
key
element
underlying
NDD
development
prognosis.
In
particular,
an
inflammation-associated
plagues
NDDs.
Conversely,
sequestration
of
this
inflammatory
correction
dysbiotic
state
render
therapeutic
effects
on
To
end,
treatment
short-chain
fatty
acid-producing
bacteria,
main
metabolites
responsible
for
maintaining
homeostasis,
ameliorates
This
intimate
pathological
link
between
suggests
gut-brain
axis
(GBA)
acts
underexplored
area
developing
therapies
Traditionally,
classification
depends
their
clinical
presentation,
mostly
manifesting
extrapyramidal
pyramidal
movement
neuropathological
evaluation
at
autopsy
gold
standard
diagnosis.
review,
we
highlight
evolving
notion
GBA
stands
equally
sensitive
marker
NDDs,
particularly
Alzheimer's
disease,
Parkinson's
amyotrophic
lateral
sclerosis
chronic
stroke.
Additionally,
represents
potent
target
treating
Journal of Magnetic Resonance Imaging,
Год журнала:
2023,
Номер
59(2), С. 431 - 449
Опубликована: Май 4, 2023
Neurofluids
is
a
term
introduced
to
define
all
fluids
in
the
brain
and
spine
such
as
blood,
cerebrospinal
fluid,
interstitial
fluid.
Neuroscientists
past
millennium
have
steadily
identified
several
different
fluid
environments
that
interact
synchronized
harmonious
manner
assure
healthy
microenvironment
required
for
optimal
neuroglial
function.
Neuroanatomists
biochemists
provided
an
incredible
wealth
of
evidence
revealing
anatomy
perivascular
spaces,
meninges
glia
their
role
drainage
neuronal
waste
products.
Human
studies
been
limited
due
restricted
availability
noninvasive
imaging
modalities
can
provide
high
spatiotemporal
depiction
neurofluids.
Therefore,
animal
key
advancing
our
knowledge
temporal
spatial
dynamics
fluids,
example,
by
injecting
tracers
with
molecular
weights.
Such
sparked
interest
identify
possible
disruptions
neurofluids
human
diseases
small
vessel
disease,
cerebral
amyloid
angiopathy,
dementia.
However,
differences
between
rodent
physiology
should
be
considered
when
extrapolating
these
findings
understand
brain.
An
increasing
armamentarium
MRI
techniques
being
built
markers
altered
pathways.
During
three‐day
workshop
organized
International
Society
Magnetic
Resonance
Medicine
was
held
Rome
September
2022,
concepts
were
discussed
distinguished
international
faculty
lay
basis
what
known
where
we
still
lack
evidence.
We
envision
next
decade,
will
allow
neurofluid
pathways
true
pathological
processes
underlying
disease
discover
new
avenues
early
diagnoses
treatments
including
drug
delivery.
Evidence
level:
1
Technical
Efficacy:
Stage
3