Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: April 26, 2024
Abstract
While
chronological
age
is
a
strong
predictor
for
health-related
risk
factors,
it
an
incomplete
metric
that
fails
to
fully
characterize
the
unique
aging
process
of
individuals
with
different
genetic
makeup,
neurodevelopment,
and
environmental
experiences.
Recent
advances
in
epigenomic
array
technologies
have
made
possible
generate
DNA
methylation-based
biomarkers
biological
aging,
which
may
be
useful
predicting
myriad
cognitive
abilities
functional
brain
network
organization
across
older
individuals.
It
currently
unclear
domains
are
negatively
correlated
epigenetic
above
beyond
age,
unknown
if
important
mechanism
explaining
these
associations.
In
this
study,
accelerated
(i.e.
AgeAccelGrim)
performed
worse
on
tasks
spanned
wide
variety
faculties
including
both
fluid
crystallized
intelligence
(
N
=
103,
average
68.98
years,
73
females,
30
males).
Additionally,
fMRI
connectome-based
predictive
models
suggested
mediating
connectivity
acceleration-cognition
associations
primarily
medial
temporal
lobe
limbic
structures.
This
research
highlights
role
processes
development
maintenance
healthy
capacities
function
brain.
Aging Cell,
Journal Year:
2023,
Volume and Issue:
22(5)
Published: April 3, 2023
Ageing
is
the
greatest
risk
factor
of
late-onset
neurodegenerative
diseases.
In
realm
sporadic
tauopathies,
modelling
process
biological
ageing
in
experimental
animals
forms
foundation
searching
for
molecular
origin
pathogenic
tau
and
developing
potential
therapeutic
interventions.
Although
prior
research
into
transgenic
models
offers
valuable
lessons
studying
how
mutations
overexpression
can
drive
pathologies,
underlying
mechanisms
by
which
leads
to
abnormal
accumulation
remains
poorly
understood.
Mutations
associated
with
human
progeroid
syndromes
have
been
proposed
be
able
mimic
an
aged
environment
animal
models.
Here,
we
summarise
recent
attempts
relation
tauopathies
using
that
carry
syndromes,
or
genetic
elements
unrelated
exceptional
natural
lifespans,
a
remarkable
resistance
ageing-related
disorders.
Frontiers in Aging Neuroscience,
Journal Year:
2023,
Volume and Issue:
15
Published: Aug. 1, 2023
The
proportion
of
older
adults
within
society
is
sharply
increasing
and
a
better
understanding
how
we
age
starts
to
be
critical.
However,
given
the
paucity
longitudinal
studies
with
both
neuroimaging
epigenetic
data,
it
remains
largely
unknown
whether
speed
clock
changes
over
life
course
any
such
are
proportional
in
brain
aging
cognitive
skills.
To
fill
these
knowledge
gaps,
conducted
study
prenatal
birth
cohort,
studied
across
adolescence
young
adulthood,
evaluated
its
relationship
outcomes.DNA
methylation
was
assessed
using
Illumina
EPIC
Platform
adolescence,
early
late
20
s,
DNA
estimated
Horvath's
clock,
gap
(EpiAGE)
calculated
as
residualized
for
batch,
chronological
epithelial
cells.
Structural
magnetic
resonance
imaging
(MRI)
acquired
s
same
3T
Prisma
MRI
scanner
Neuroanatomical
Age
Prediction
R
(NAPR)
platform.
Cognitive
skills
were
Wechsler
Adult
Intelligence
Scale
(WAIS)
s.The
EpiAGE
positively
correlated
(r
=
0.34-0.47),
suggesting
that
relatively
stable
characteristic
an
individual.
Further,
faster
pace
between
measurements
at
end
period
0.48-0.77)
but
negatively
earlier
time
point
-0.42
-0.55),
compensatory
mechanism
where
matures
might
catching
up
matures.
Finally,
higher
positive
showed
small
(Adj
R2
0.03)
significant
relationships
all
participants
lower
full-scale
IQ
adult
women
s.We
conclude
individual
shows
only
accelerated
women-specific
worse
performance
IQ.
Frontiers in Aging Neuroscience,
Journal Year:
2024,
Volume and Issue:
16
Published: March 8, 2024
The
growing
phenomenon
of
population
aging
is
redefining
demographic
dynamics,
intensifying
age-related
conditions,
especially
dementia,
projected
to
triple
by
2050
with
an
enormous
global
economic
burden.
This
study
investigates
visual
arts-mediated
Cognitive
Activation
Therapy
(CAT)
as
a
non-pharmacological
CAT
intervention
targets
both
biological
[leukocyte
telomere
length
(LTL),
DNA
methylation
age
(DNAmAge)]
and
cognitive
functionality.
Aligning
broader
trend
integrating
approaches
into
dementia
care.
longitudinal
involved
20
patients
mild
moderate
neurocognitive
disorders.
functional
assessments,
markers
-i.e.,
LTL
DNAmAge-
were
analyzed
before
after
intervention.
Change
in
was
positively
correlated
days
treatment
(
p
=0.0518).
significantly
elongated
=0.0269),
men
=0.0142),
correlating
younger
=0.0357),
higher
education
=0.0008).
DNAmAge
remained
instead
stable
post-treatment.
improvements
observed
for
Copy
complex
geometric
figure,
Progressive
Silhouettes,
Position
Discrimination,
Communication
Activities
Daily
Living—Second
edition,
Direct
Functional
Status
<
0.0001)
Object
decision
=0.0594),
but
no
correlations
found
between
gains.
Visual
effectively
mitigates
cellular
aging,
men,
elongating
LTL.
These
findings
underscore
the
potential
interventions
enhancing
status
general
well-being
Further
research
larger
longer-term
studies
essential
validation.
Frontiers in Endocrinology,
Journal Year:
2024,
Volume and Issue:
15
Published: May 10, 2024
Aging
has
always
been
considered
as
a
risk
factor
for
neurodegenerative
diseases,
but
there
are
individual
differences
and
its
mechanism
is
not
yet
clear.
Epigenetics
may
unveil
the
relationship
between
aging
diseases.
Our
study
employed
bidirectional
two-sample
Mendelian
randomization
(MR)
design
to
assess
potential
causal
association
epigenetic
We
utilized
publicly
available
summary
datasets
from
several
genome-wide
studies
(GWAS).
investigation
focused
on
multiple
measures
of
age
exposures
outcomes,
while
occurrence
diseases
served
outcomes.
Sensitivity
analyses
confirmed
accuracy
results.
The
results
show
significant
decrease
in
Parkinson's
disease
with
GrimAge
(OR
=
0.8862,
95%
CI
0.7914-0.9924,
p
0.03638).
Additionally,
we
identified
that
HannumAge
was
linked
an
increased
Multiple
Sclerosis
1.0707,
1.0056-1.1401,
0.03295).
Furthermore,
also
found
estimated
plasminogen
activator
inhibitor-1(PAI-1)
levels
demonstrated
Alzheimer's
1.0001,
1.0000-1.0002,
0.04425).
Beyond
that,
did
observe
any
associations
risk.
findings
firstly
provide
evidence
Exploring
perspective
contribute
diagnosis,
prognosis,
treatment
International Journal of Molecular Sciences,
Journal Year:
2023,
Volume and Issue:
24(21), P. 15699 - 15699
Published: Oct. 28, 2023
Atrial
fibrillation
(AF)
is
the
most
common
arrhythmia
in
humans.
AF
characterized
by
irregular
and
increased
atrial
muscle
activation.
This
high-frequency
activation
obliterates
synchronous
work
of
atria
ventricles,
reducing
myocardial
performance,
which
can
lead
to
severe
heart
failure
or
stroke.
The
risk
developing
depends
largely
on
patient's
history.
Cardiovascular
diseases
are
considered
aging-related
pathologies;
therefore,
deciphering
role
telomeres
DNA
methylation
(mDNA),
two
hallmarks
aging,
likely
contribute
a
better
understanding
prophylaxis
AF.
In
honor
Prof.
Elizabeth
Blackburn's
75th
birthday,
we
dedicate
this
review
discovery
her
contribution
research
aging.