Clinical Epigenetics,
Journal Year:
2023,
Volume and Issue:
15(1)
Published: April 12, 2023
Abstract
Background
Epigenetic
age
acceleration
(EAA)
and
epigenetic
gestational
(EGAA)
are
biomarkers
of
physiological
development
may
be
affected
by
the
perinatal
environment.
The
aim
this
study
was
to
evaluate
performance
clocks
identify
biological
sociodemographic
correlates
EGAA
EAA
at
birth
in
childhood.
In
Project
Viva
pre-birth
cohort,
DNA
methylation
measured
nucleated
cells
cord
blood
(leukocytes
red
cells,
N
=
485)
leukocytes
early
(N
120,
median
3.2
years)
mid-childhood
460,
7.7
years).
We
calculated
(EGA;
Bohlin
Knight
clocks)
(EA;
Horvath
skin
&
clocks),
respective
measures
EAA.
evaluated
relative
chronological
using
correlations
absolute
error.
tested
for
associations
maternal-child
characteristics
with
mutually
adjusted
linear
models
controlling
estimated
cell
type
proportions.
also
EA
childhood
Results
EGA
strongly
correlated
(Bohlin
r
0.82,
p
<
0.001).
were
weakly
age,
but
moderately
(
0.45–0.65).
Maternal
smoking
during
pregnancy
associated
higher
[
B
(95%
CI)
1.17
weeks
(−
0.09,
2.42)]
[0.34
years
(0.03,
0.64)].
Female
newborns
children
had
lower
[−
0.17
0.30,
−
0.04)]
2.88
4.41,
1.35)]
[early
childhood:
0.3
0.60,
0.01);
mid-childhood:
0.48
0.77,
0.18)]
than
males.
When
comparing
self-reported
Asian,
Black,
Hispanic,
more
one
race
or
other
racial/ethnic
groups
White,
we
identified
significant
differences
mid-childhood,
varied
across
clocks.
positively
Conclusions
child
sex
multiple
timepoints.
Further
research
provide
insight
into
relationship
between
factors,
pediatric
aging,
health
lifespan.
Signal Transduction and Targeted Therapy,
Journal Year:
2023,
Volume and Issue:
8(1)
Published: June 8, 2023
Abstract
Aging
is
characterized
by
systemic
chronic
inflammation,
which
accompanied
cellular
senescence,
immunosenescence,
organ
dysfunction,
and
age-related
diseases.
Given
the
multidimensional
complexity
of
aging,
there
an
urgent
need
for
a
systematic
organization
inflammaging
through
dimensionality
reduction.
Factors
secreted
senescent
cells,
known
as
senescence-associated
secretory
phenotype
(SASP),
promote
inflammation
can
induce
senescence
in
normal
cells.
At
same
time,
accelerates
immune
resulting
weakened
function
inability
to
clear
cells
inflammatory
factors,
creates
vicious
cycle
senescence.
Persistently
elevated
levels
organs
such
bone
marrow,
liver,
lungs
cannot
be
eliminated
leading
damage
aging-related
Therefore,
has
been
recognized
endogenous
factor
elimination
could
potential
strategy
anti-aging.
Here
we
discuss
at
molecular,
cellular,
organ,
disease
levels,
review
current
aging
models,
implications
cutting-edge
single
cell
technologies,
well
anti-aging
strategies.
Since
preventing
alleviating
diseases
improving
overall
quality
life
are
ultimate
goals
research,
our
highlights
critical
features
mechanisms
along
with
latest
developments
future
directions
providing
theoretical
foundation
novel
practical
Nature,
Journal Year:
2023,
Volume and Issue:
624(7990), P. 164 - 172
Published: Dec. 6, 2023
Abstract
Animal
studies
show
aging
varies
between
individuals
as
well
organs
within
an
individual
1–4
,
but
whether
this
is
true
in
humans
and
its
effect
on
age-related
diseases
unknown.
We
utilized
levels
of
human
blood
plasma
proteins
originating
from
specific
to
measure
organ-specific
differences
living
individuals.
Using
machine
learning
models,
we
analysed
11
major
estimated
organ
age
reproducibly
five
independent
cohorts
encompassing
5,676
adults
across
the
lifespan.
discovered
nearly
20%
population
strongly
accelerated
one
1.7%
are
multi-organ
agers.
Accelerated
confers
20–50%
higher
mortality
risk,
relate
faster
those
organs.
find
with
heart
have
a
250%
increased
failure
risk
brain
vascular
predict
Alzheimer’s
disease
(AD)
progression
independently
pTau-181
(ref.
5
),
current
best
blood-based
biomarker
for
AD.
Our
models
link
calcification,
extracellular
matrix
alterations
synaptic
protein
shedding
early
cognitive
decline.
introduce
simple
interpretable
method
study
using
proteomics
data,
predicting
effects.
Aging,
Journal Year:
2022,
Volume and Issue:
unknown
Published: Dec. 14, 2022
Aging
|
doi:10.18632/aging.204434.
Ake
T.
Lu,
Alexandra
M.
Binder,
Joshua
Zhang,
Qi
Yan,
Alex
P.
Reiner,
Simon
R.
Cox,
Janie
Corley,
Sarah
E.
Harris,
Pei-Lun
Kuo,
Ann
Z.
Moore,
Stefania
Bandinelli,
James
D.
Stewart,
Cuicui
Wang,
Elissa
J.
Hamlat,
S.
Epel,
Joel
Schwartz,
Eric
A.
Whitsel,
Adolfo
Correa,
Luigi
Ferrucci,
Riccardo
Marioni,
Steve
Horvath
Nature Aging,
Journal Year:
2024,
Volume and Issue:
4(11), P. 1619 - 1634
Published: Aug. 14, 2024
Aging
is
a
complex
process
associated
with
nearly
all
diseases.
Understanding
the
molecular
changes
underlying
aging
and
identifying
therapeutic
targets
for
aging-related
diseases
are
crucial
increasing
healthspan.
Although
many
studies
have
explored
linear
during
aging,
prevalence
of
mortality
risk
accelerates
after
specific
time
points,
indicating
importance
studying
nonlinear
changes.
In
this
study,
we
performed
comprehensive
multi-omics
profiling
on
longitudinal
human
cohort
108
participants,
aged
between
25
years
75
years.
The
participants
resided
in
California,
United
States,
were
tracked
median
period
1.7
years,
maximum
follow-up
duration
6.8
analysis
revealed
consistent
patterns
markers
substantial
dysregulation
occurring
at
two
major
periods
approximately
44
60
chronological
age.
Distinct
molecules
functional
pathways
these
also
identified,
such
as
immune
regulation
carbohydrate
metabolism
that
shifted
60-year
transition
cardiovascular
disease,
lipid
alcohol
40-year
transition.
Overall,
research
demonstrates
functions
risks
change
nonlinearly
across
lifespan
provides
insights
into
biological
involved
Nature Aging,
Journal Year:
2022,
Volume and Issue:
2(11), P. 1054 - 1069
Published: Nov. 17, 2022
The
gut
microbiome
is
a
modifier
of
disease
risk
because
it
interacts
with
nutrition,
metabolism,
immunity
and
infection.
Aging-related
health
loss
has
been
correlated
transition
to
different
states.
Microbiome
summary
indices
including
alpha
diversity
are
apparently
useful
describe
these
states
but
belie
taxonomic
differences
that
determine
biological
importance.
We
analyzed
21,000
fecal
microbiomes
from
seven
data
repositories,
across
five
continents
spanning
participant
ages
18-107
years,
revealing
uniqueness
correlate
aging,
not
healthy
aging.
Among
statistics
tested,
only
Kendall
accurately
reflects
the
core
abundance
ranking
disease-associated
health-associated
taxa.
Increased
taxa
depletion
coabundant
subset
generic
feature
These
alterations
stronger
correlates
unhealthy
aging
than
most
thus
help
identify
better
targets
for
therapeutic
modulation
microbiome.