Analytical Chemistry,
Journal Year:
2013,
Volume and Issue:
85(22), P. 10664 - 10669
Published: Nov. 3, 2013
A
major
constraint
in
large-scale
mass
spectrometry
(MS)-based
metabolomic
initiatives
is
the
low
sample
throughput
associated
with
chromatographic
or
electrophoretic
separations.
Herein,
we
introduce
multisegment
injection-capillary
electrophoresis-mass
(MSI-CE-MS)
as
a
multiplexed
separation
platform
for
metabolomics
that
increases
up
to
one
order
of
magnitude
while
improving
overall
data
fidelity.
We
demonstrate
serial
injection
seven
more
discrete
segments
can
be
performed
within
single
capillary
maintaining
isomeric
resolution
without
ion
suppression
when
using
high
time-of-flight-MS.
Customized
sequences
devised
encode
information
temporally
based
on
signal
pattern
recognition,
which
enables
unambiguous
identification
and
accurate
quantification
(mean
bias
<10%)
polar
metabolites
human
plasma
good
reproducibility
(CV
≈
10%,
n
=
70).
False
discoveries
are
avoided
rigorous
dilution
trend
filter
reject
spurious
signals
background
peaks
comprise
majority
(≈65%)
total
detectable
features.
MSI-CE-MS
offers
an
unprecedented
approach
enhance
analogous
direct
infusion-MS
(≈3
min/sample)
delivering
far
greater
selectivity,
quantitative
performance,
quality
since
same
from
different
samples
migrates
into
source
short
time
interval
(≈2-6
min).
These
distinct
analytical
bioinformatic
merits
achieved
column
switching,
isotopic
labeling,
hardware
modifications,
costly
infrastructure
investments.
Molecular Case Studies,
Journal Year:
2015,
Volume and Issue:
1(1), P. a000588 - a000588
Published: Sept. 24, 2015
Metabolomics,
which
is
defined
as
the
comprehensive
analysis
of
metabolites
in
a
biological
specimen,
an
emerging
technology
that
holds
promise
to
inform
practice
precision
medicine.
Historically,
small
numbers
have
been
used
diagnose
complex
metabolic
diseases
well
monogenic
disorders
such
inborn
errors
metabolism.
Current
metabolomic
technologies
go
beyond
scope
standard
clinical
chemistry
techniques
and
are
capable
precise
analyses
hundreds
thousands
metabolites.
Consequently,
metabolomics
affords
detailed
characterization
phenotypes
can
enable
medicine
at
number
levels,
including
derangements
underlie
disease,
discovery
new
therapeutic
targets,
biomarkers
may
be
either
disease
or
monitor
activity
therapeutics.
Annual Review of Biochemistry,
Journal Year:
2017,
Volume and Issue:
86(1), P. 277 - 304
Published: June 20, 2017
Metabolites
are
the
small
biological
molecules
involved
in
energy
conversion
and
biosynthesis.
Studying
metabolism
is
inherently
challenging
due
to
metabolites’
reactivity,
structural
diversity,
broad
concentration
range.
Herein,
we
review
common
pitfalls
encountered
metabolomics
provide
concrete
guidelines
for
obtaining
accurate
metabolite
measurements,
focusing
on
water-soluble
primary
metabolites.
We
show
how
seemingly
straightforward
sample
preparation
methods
can
introduce
systematic
errors
(e.g.,
owing
interconversion
among
metabolites)
proper
selection
of
quenching
solvent
acidic
acetonitrile:methanol:water)
mitigate
such
problems.
discuss
specific
strengths,
pitfalls,
best
practices
each
analytical
platform:
liquid
chromatography-mass
spectrometry
(LC-MS),
gas
(GC-MS),
nuclear
magnetic
resonance
(NMR),
enzyme
assays.
Together
this
information
provides
a
pragmatic
knowledge
base
carrying
out
biologically
informative
measurements.
Analytical Chemistry,
Journal Year:
2015,
Volume and Issue:
87(4), P. 2273 - 2281
Published: Jan. 15, 2015
Liquid
chromatography-mass
spectrometry
(LC-MS)
technology
allows
for
rapid
quantitation
of
cellular
metabolites,
with
metabolites
identified
by
mass
and
chromatographic
retention
time.
Recently,
the
development
scanning
high-resolution
high
accuracy
spectrometers
desire
throughput
screening,
minimal
or
no
separation
has
become
increasingly
popular.
When
analyzing
complex
extracts,
however,
lack
could
potentially
result
in
misannotation
structurally
related
metabolites.
Here,
we
show
that,
even
using
electrospray
ionization,
a
soft
ionization
method,
in-source
fragmentation
generates
unwanted
byproducts
identical
to
common
For
example,
nucleotide-triphosphates
generate
nucleotide-diphosphates,
hexose-phosphates
triose-phosphates.
We
evaluated
yeast
intracellular
metabolite
extracts
found
more
than
20
cases
fragments
that
mimic
Accordingly,
is
required
accurate
many
RSC Advances,
Journal Year:
2020,
Volume and Issue:
10(6), P. 3092 - 3104
Published: Jan. 1, 2020
Metabolomics
is
the
study
of
investigation
small
molecules
derived
from
cellular
and
organism
metabolism,
which
reflects
outcomes
complex
network
biochemical
reactions
in
living
systems.
Frontiers in Immunology,
Journal Year:
2021,
Volume and Issue:
12
Published: Nov. 5, 2021
Diabetes
mellitus
type
II
and
obesity
are
two
important
causes
of
death
in
modern
society.
They
characterized
by
low-grade
chronic
inflammation
metabolic
dysfunction
(meta-inflammation),
which
is
observed
all
tissues
involved
energy
homeostasis.
A
substantial
body
evidence
has
established
an
role
for
macrophages
these
during
the
development
diabetes
obesity.
Macrophages
can
activate
into
specialized
subsets
cues
from
their
microenvironment
to
handle
a
variety
tasks.
Many
different
have
been
described
diabetes/obesity
literature
main
classifications
widely
used
that
also
defined
differential
reprogramming
taking
place
fuel
functions.
Classically
activated,
pro-inflammatory
(often
referred
as
M1)
favor
glycolysis,
produce
lactate
instead
metabolizing
pyruvate
acetyl-CoA,
tricarboxylic
acid
cycle
interrupted
at
points.
Alternatively
activated
M2)
mainly
use
beta-oxidation
fatty
acids
oxidative
phosphorylation
create
energy-rich
molecules
such
ATP
tissue
repair
downregulation
inflammation.
Since
alterations
organism
level,
may
induce
changes
macrophage
metabolism
resulting
unique
activation
patterns
This
review
describes
interactions
between
conditions
like
We
focus
on
possibilities
measuring
range
metabolites
intra-and
extracellularly
precise
comprehensive
manner
better
identify
polarized
Advantages
disadvantages
currently
most
metabolite
analysis
approaches
highlighted.
further
describe
how
combined
serve
provide
overview
take
intracellularly
Diabetology,
Journal Year:
2023,
Volume and Issue:
4(2), P. 134 - 159
Published: April 12, 2023
The
metabolic
syndrome
(MetS),
first
introduced
by
Haller
in
1975,
was
sometimes
also
known
as
insulin
resistance
syndrome,
X,
and
plurimetabolic
syndrome.
In
1989,
it
rechristened
Kaplan
the
“Deadly
Quartet”
based
on
a
consolidation
of
central
obesity,
impaired
glucose
tolerance,
dyslipidemia,
systemic
hypertension.
MetS
is
positively
associated
with
pro-inflammatory
pro-thrombotic
state,
attributed
to
increased
inflammatory
marker
activity.
Moreover,
frequently
atherosclerotic
cardiovascular
disease,
hyperuricemia,
obstructive
sleep
apnea,
chronic
kidney
disease.
Despite
concerted
endeavors
worldwide,
complexity
pathophysiology
still
needs
be
clearly
understood.
Currently,
therapeutic
possibilities
are
confined
individual
therapy
for
hyperglycemia,
hypertension,
hypertriglyceridemia,
regular
physical
exercise,
restricted
diet.
this
review,
progress
regarding
understanding
MetS;
recent
emerging
technologies,
such
metabolomics
proteomics;
relation
diabetes,
diseases;
association
COVID-19
discussed.