bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2022,
Volume and Issue:
unknown
Published: July 6, 2022
I.
Abstract
Background
Epigenome-wide
association
studies
(EWAS)
are
a
highly
promising
approach
that
can
inform
precision
environmental
health.
However,
current
EWAS
underpowered
for
biomarker
detection
and
increasing
sample
sizes
will
require
substantial
resources.
Therefore,
alternative
approaches
identifying
candidate
biomarkers
through
critical
moving
the
field
forward.
Objectives
To
provide
proof-of-principle
maximizing
exposure
variance
in
by
selecting
participants
from
disproportionately
exposed
global
populations
enables
effective
detection,
even
small
sizes.
Methods
We
profiled
genome-wide
DNA
methylation
using
Illumina
Infinium
MethylationEPIC
BeadChip
whole
blood
N=32
individuals
Madre
de
Dios,
Peru
with
high
methylmercury
(MeHg)
due
to
artisanal
small-scale
gold
mining.
compared
N=16
(>10
μg/g)
vs.
low
(<1
total
hair
mercury
(a
proxy
exposure),
matched
on
age
sex.
Results
identified
nine
differentially
methylated
CpG
sites
(FDR<0.05),
including
several
known
links
MeHg
toxicity.
The
most
significantly
different
site
was
an
intronic
enhancer
of
SLC5A7
gene,
which
encodes
L-type
amino
acid
transporter
1
(LAT1)
facilitates
transport
into
protein-rich
tissue,
muscle
brain.
Our
Gene
Ontology
transcription
factor
motif
enrichment
analyses
differential
genes
involved
outcomes
established
MeHg,
immune
response,
neurotoxicity,
type
2
diabetes
(T2D)
risk.
Last,
we
epigenetic
PUFA-mediated
protection
against
Discussion
Here,
show
samples
detect
CpGs
pathways
interest
relevant
biology.
Similar
be
leveraged
develop
targeted,
custom
sequencing
panels
microarrays
limited
replicated,
validated
given
exposure.
Finding
relevant
chemicals
in
the
vast
(known)
chemical
space
is
a
major
challenge
for
environmental
and
exposomics
studies
leveraging
nontarget
high
resolution
mass
spectrometry
(NT-HRMS)
methods.
Chemical
databases
now
contain
hundreds
of
millions
chemicals,
yet
many
are
not
relevant.
This
article
details
an
extensive
collaborative,
open
science
effort
to
provide
dynamic
collection
environmental,
metabolomics,
research,
along
with
supporting
information
about
their
relevance
assist
researchers
interpretation
candidate
hits.
The
PubChemLite
Exposomics
compiled
from
ten
annotation
categories
within
PubChem,
enhanced
patent,
literature
counts,
predicted
partition
coefficient
(logP)
values,
as
well
collision
cross
section
(CCS)
values
using
CCSbase.
Monthly
versions
archived
on
Zenodo
under
CC-BY
license,
reproducible
new
interface
has
been
developed,
including
historical
trends
patent
data,
browse
collection.
how
can
support
studies,
describes
efforts
increase
availability
experimental
CCS
explores
known
limitations
potential
future
developments.
data
code
behind
these
openly
available.
be
browsed
at
https://pubchemlite.lcsb.uni.lu.
Journal of Separation Science,
Journal Year:
2025,
Volume and Issue:
48(2)
Published: Feb. 1, 2025
ABSTRACT
Metabolomics,
a
powerful
discipline
within
systems
biology,
aims
at
comprehensive
profiling
of
small
molecules
in
biological
samples.
The
challenges
sample
complexity
are
addressed
through
innovative
preparation
methods,
including
solid‐phase
extraction
and
microextraction
techniques,
enhancing
the
detection
quantification
low‐abundance
metabolites.
Advances
chromatographic
separation,
particularly
liquid
chromatography
(LC)
gas
(GC),
coupled
with
high‐resolution
(HR)
mass
spectrometry
(MS),
have
significantly
improved
sensitivity,
selectivity,
throughput
metabolomic
studies.
Cutting‐edge
such
as
ion‐mobility
(IM‐MS)
tandem
MS
(MS/MS),
further
expand
capacity
for
metabolite
profiling.
These
advanced
analytical
platforms
each
offer
unique
advantages
metabolomics,
continued
technological
improvements
driving
deeper
insights
into
metabolic
pathways
biomarker
discovery.
By
providing
detailed
overview
current
trends
this
review
to
valuable
future
metabolomics
human
health
research
its
translational
potential
clinical
settings.
Toward
end,
also
highlights
biomedical
applications
emphasizing
role
discovery,
disease
diagnostics,
personalized
medicine,
drug
development.
Comprehensive Reviews in Food Science and Food Safety,
Journal Year:
2025,
Volume and Issue:
24(2)
Published: Feb. 4, 2025
Abstract
Humans
are
exposed
to
a
complex
mixture
of
environmental
and
food‐related
chemicals
throughout
their
lifetime.
Exposome
research
intends
explore
the
nongenetic,
that
is,
causes
chronic
disease
interactions
comprehensively.
Residual
antibiotics
can
enter
human
body
through
therapeutics,
foods
animal
origin,
aquatic
products,
or
drinking
water.
In
last
decade,
significant
levels
residual
in
urine
have
been
described,
demonstrating
frequent
exposure
populations.
To
which
extent
they
contribute
health
risks
is
debated.
Human
biomonitoring
(HBM)
aims
determine
quantify
concentrations
xenobiotics
specimens
provides
toolbox
monitor
diverse
chemical
exposures.
Due
public
implications,
priority‐listed
routinely
monitored
European
Union
other
countries.
However,
antibiotics,
an
important
class
(food‐derived)
xenobiotics,
still
not
systematically
investigated
for
better
more
holistic
understanding
context
exposomics.
This
review
comprehensive
summary
HBM
related
existing
liquid
chromatography–mass
spectrometry
(LC–MS)‐based
analytical
methods,
potential
caused
by
unintended
exposure.
Incorporating
into
exposome
framework
routine
using
multiclass
methods
will
provide
toxicological
pharmacological
effects
and,
ultimately,
exposome.
The
human
exposome
remains
limited
due
to
the
challenging
analytical
strategies
used
reveal
low-level
endocrine-disrupting
chemicals
(EDCs)
and
their
metabolites
in
serum
urine.
This
limits
integrity
of
EDC
exposure
assessment
hinders
understanding
cumulative
health
effects.
In
this
study,
we
propose
an
enhanced
protocol
based
on
multi-solid-phase
extraction
(multi-SPE)
expand
with
polar
EDCs
train
a
machine
learning
(ML)
model
for
methodology
prediction
molecular
descriptors.
measurement
70
(25%)
34
(12%)
out
295
well-acknowledged
urine
compared
hydrophilic–lipophilic
balance
sorbent
alone.
nontarget
analysis
from
20
women
childbearing
age
cohort
498,
controlling
occupational
factors
daily
behaviors
high
chemical
potential,
multi-SPE
increased
10
(40%)
16
(53%)
target
identification
17
(77%)
(36%)
(confidence
≥
level
3)
urine,
respectively.
Interestingly,
ML
predicted
that
could
identify
additional
38%
most
bioactive
chemicals.
conclusion,
advances
by
expanding
profiles.
Analytical Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 12, 2025
Serum
endogenous
metabolites
and
coexisting
exogenous
compounds
are
closely
related
to
human
health.
Metabolomics
often
uses
high-resolution
mass
spectrometry
(HRMS),
but
current
exposomics
studies
typically
rely
on
triple
quadrupole
tandem
due
lower
concentrations
in
the
body.
As
a
result,
metabolome-exposome-wide
association
(mEWAS)
require
combination
of
untargeted
metabolomics
several
targeted
methods
measure
more
exposures,
leading
increased
time
sample
consumption.
In
this
study,
novel
method
was
proposed
by
leveraging
advantages
recently
introduced
Zeno
MRMHR
technology;
it
allows
for
simultaneous
acquisition
metabolome
HRMS
exposome
multiple
reaction
monitoring
(MRM)
modes
one
injection.
The
signal
responses
MRM
were
comparable
those
HRMS.
This
rigorously
validated,
all
standards
had
relative
standard
deviations
(RSDs)
below
20%
intraday
interday
repeatability.
Over
90%
metabolic
features
exhibited
RSDs
these
assessments.
also
broad
quantification
range,
with
limits
(LLOQ)
from
0.1
25
ng/mL
higher
(HLOQ)
2.5
1000
ng/mL.
approach
demonstratively
applied
type
2
diabetes
mellitus
cohort
identify
serum
risk
factors
study
metabolome-exposome
association.
To
our
knowledge,
is
first
implementation
unified
analysis
mode
210
injection,
offering
tool
mEWAS
research.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 27, 2025
As
our
health
is
affected
by
the
xenobiotic
chemicals
we
are
exposed
to,
it
important
to
rapidly
assess
these
molecules
both
in
environment
and
bodies.
Targeted
analytical
methods
coupling
either
gas
or
liquid
chromatography
with
mass
spectrometry
(GC-MS
LC-MS)
commonly
utilized
current
exposure
assessments.
While
accepted
as
gold
standard
for
analyses,
they
often
require
multiple
sample
preparation
steps
more
than
30
minutes
per
sample.
This
throughput
limitation
a
critical
gap
assessments
has
resulted
an
evolving
interest
using
ion
mobility
MS
(IMS-MS)
non-targeted
studies.
IMS-MS
unique
technique
due
its
rapid
capabilities
(millisecond
scanning)
detection
of
wide
range
based
on
collision
cross
section
(CCS)
mass-to-charge
(
m/z
)
values.
To
increase
availability
information
studies,
here
drift
tube
evaluate
4,685
chemical
standards
from
Environmental
Protection
Agency
Toxicity
Forecaster
(ToxCast)
program
including
pesticides,
industrial
chemicals,
pharmaceuticals,
consumer
products,
per-
polyfluoroalkyl
substances
(PFAS).
In
3,993
[M+H]
+
,
[M+Na]
[M-H]
-
[M+]
types
were
observed
high
confidence
reproducibility
(≤1%
error
intra-laboratory
≤2%
inter-laboratory)
2,140
chemicals.
These
values
then
assembled
into
openly
available
multidimensional
database
uploaded
PubChem
enable
suspect
screening
environmental
contaminants,
faster
response
time
assessments,
xenobiotic-disease
connections.
Environmental Science and Pollution Research,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 8, 2025
Abstract
Exposome
represents
one
of
the
most
pressing
issues
in
environmental
science
research
field.
However,
a
comprehensive
summary
worldwide
human
exposome
is
lacking.
We
aimed
to
explore
bibliometric
characteristics
scientific
publications
on
exposome.
A
analysis
from
2005
December
2024
was
conducted
using
Web
Science
accordance
with
PRISMA
guidelines.
Trends/hotspots
were
investigated
keyword
frequency,
co-occurrence,
and
thematic
map.
Sex
disparities
terms
citations
examined.
From
2024,
931
published
363
journals
written
by
4529
authors
72
countries.
The
number
tripled
during
last
5
years.
Publications
females
(51%
as
first
34%
authors)
cited
fewer
times
(13,674)
than
males
(22,361).
Human
studies
mainly
focused
air
pollution,
metabolomics,
chemicals
(e.g.,
per-
polyfluoroalkyl
substances
(PFAS),
endocrine-disrupting
chemicals,
pesticides),
early-life
exposure,
biomarkers,
microbiome,
omics,
cancer,
reproductive
disorders.
Social
built
environment
factors,
occupational
multi-exposure,
digital
exposure
screen
use),
climate
change,
late-life
received
less
attention.
Our
results
uncovered
high-impact
countries,
institutions,
journals,
references,
authors,
key
trends/hotspots.
use
technologies
sensors,
wearables)
data
artificial
intelligence)
has
blossomed
overcome
challenges
could
provide
valuable
knowledge
toward
precision
prevention.
risk
scores
represent
promising
avenue.