Experimental Gerontology,
Journal Year:
2023,
Volume and Issue:
183, P. 112319 - 112319
Published: Nov. 1, 2023
The
intricate
interplay
between
gut
microbiota
and
the
host
is
pivotal
in
maintaining
homeostasis
health.
Dietary
tryptophan
(TRP)
metabolism
initiates
a
cascade
of
essential
endogenous
metabolites,
including
kynurenine,
kynurenic
acid,
serotonin,
melatonin,
as
well
microbiota-derived
Trp
metabolites
like
tryptamine,
indole
propionic
acid
(IPA),
other
derivatives.
Notably,
tryptamine
IPA,
among
exert
crucial
roles
modulating
immune,
metabolic,
neuronal
responses
at
both
local
distant
sites.
Additionally,
these
demonstrate
potent
antioxidant
anti-inflammatory
activities.
levels
TRP
are
intricately
linked
to
microbiota's
health,
which,
turn,
can
be
influenced
by
age-related
changes.
This
review
aims
comprehensively
summarize
cellular
molecular
impacts
IPA
on
health
aging-related
complications.
Furthermore,
we
explore
their
corresponding
bacteria
select
diseased
conditions,
shedding
light
potential
significance
biomarkers
therapeutic
targets.
Signal Transduction and Targeted Therapy,
Journal Year:
2022,
Volume and Issue:
7(1)
Published: July 6, 2022
The
centenary
of
insulin
discovery
represents
an
important
opportunity
to
transform
diabetes
from
a
fatal
diagnosis
into
medically
manageable
chronic
condition.
Insulin
is
key
peptide
hormone
and
mediates
the
systemic
glucose
metabolism
in
different
tissues.
resistance
(IR)
disordered
biological
response
for
stimulation
through
disruption
molecular
pathways
target
Acquired
conditions
genetic
factors
have
been
implicated
IR.
Recent
biochemical
studies
suggest
that
dysregulated
metabolic
mediators
released
by
adipose
tissue
including
adipokines,
cytokines,
chemokines,
excess
lipids
toxic
lipid
metabolites
promote
IR
other
associated
with
several
groups
abnormal
syndromes
include
obesity,
diabetes,
dysfunction-associated
fatty
liver
disease
(MAFLD),
cardiovascular
disease,
polycystic
ovary
syndrome
(PCOS),
abnormalities.
Although
no
medication
specifically
approved
treat
IR,
we
summarized
lifestyle
changes
pharmacological
medications
used
as
efficient
intervention
improve
sensitivity.
Ultimately,
systematic
discussion
complex
mechanism
will
help
identify
potential
new
targets
closely
Advanced Science,
Journal Year:
2021,
Volume and Issue:
8(18)
Published: July 28, 2021
Abstract
Type
2
diabetes
is
a
metabolic,
chronic
disorder
characterized
by
insulin
resistance
and
elevated
blood
glucose
levels.
Although
large
drug
portfolio
exists
to
keep
the
levels
under
control,
these
medications
are
not
without
side
effects.
More
importantly,
once
diagnosed
rarely
reversible.
Dysfunctions
in
kidney,
retina,
cardiovascular
system,
neurons,
liver
represent
common
complications
of
diabetes,
which
again
lack
effective
therapies
that
can
reverse
organ
injury.
Overall,
molecular
mechanisms
how
type
develops
leads
irreparable
damage
remain
elusive.
This
review
particularly
focuses
on
novel
targets
may
play
role
pathogenesis
diabetes.
Further
research
eventually
pave
way
for
treatment—or
even
prevention—of
along
with
its
complications.
Gut Microbes,
Journal Year:
2021,
Volume and Issue:
13(1)
Published: Jan. 1, 2021
As
the
gut
microbiota
exerts
various
effects
on
intestinal
milieu
which
influences
distant
organs
and
pathways,
it
is
considered
to
be
a
full-fledged
endocrine
organ.
The
plays
major
role
in
reproductive
system
throughout
woman's
lifetime
by
interacting
with
estrogen,
androgens,
insulin,
other
hormones.
Imbalance
of
composition
can
lead
several
diseases
conditions,
such
as
pregnancy
complications,
adverse
outcomes,
polycystic
ovary
syndrome
(PCOS),
endometriosis,
cancer;
however,
research
mechanisms
limited.
More
effort
should
concentrated
exploring
potential
causes
underlying
microbiota-hormone-mediated
disease,
providing
novel
therapeutic
preventive
strategies.As
strategies.
European Journal of Preventive Cardiology,
Journal Year:
2019,
Volume and Issue:
26(2_suppl), P. 33 - 46
Published: Nov. 26, 2019
A
cluster
of
metabolic
factors
have
been
merged
into
an
entity
named
the
syndrome.
Although
characteristics
this
syndrome
varied
over
time
presently
used
definition
was
established
in
2009.
The
presence
three
abnormal
findings
out
five
components
qualifies
a
person
for
syndrome:
elevated
waist
circumference,
triglycerides,
reduced
high-density
lipoprotein
cholesterol,
blood
pressure
and
fasting
plasma
glucose.
Cut
points
defined
all
apart
from
which
national
or
regional
values
are
used.
predicts
cardiovascular
disease
type
2
diabetes.
This
associated
risk
does
not
exceed
its
whereof
is
most
frequent.
successful
management
should,
however,
address
involved.
always
based
on
healthy
lifestyle
choices
but
has
infrequently
to
be
supported
by
pharmacological
treatment,
especially
lowering
drugs.
useful
example
importance
multiple
targets
preventive
interventions.
To
individualized
least
when
it
comes
therapy.
Frail
elderly
people
should
over-treated.
Knowledge
transfer
how
act
accompanied
continuous
trust
building
motivation.
In
complex
situations
with
mix
biological
factors,
adverse
social
conditions
unhealthy
lifestyle,
everything
cannot
changed
at
once.
It
better
aim
small
steps
that
lasting
than
large,
unsustainable
relapses
behaviours.
will
afflicted
components,
reason
sustained
very
long
time.
review
summarizes
knowledge
according
present
state
art.
BMC Microbiology,
Journal Year:
2020,
Volume and Issue:
20(1)
Published: July 22, 2020
Abstract
Background
Gut
microbiota
plays
an
important
role
in
physiological
and
pathological
processes
of
the
host
organism,
including
aging.
Microbiota
composition
was
shown
to
vary
significantly
throughout
life
course.
Age-related
changes
were
reported
several
human
studies.
In
present
study,
age-related
dynamics
phylogenetic
profile
gut
investigated
1550
healthy
participants
from
Ukrainian
population.
Results
Significant
determined
by
qRT-PCR
at
level
major
microbial
phyla
across
age
groups
have
been
observed.
The
relative
abundance
Actinobacteria
Firmicutes
increased,
while
that
Bacteroidetes
decreased
childhood
elderly
age.
Accordingly,
Firmicutes/Bacteroidetes
(F/B)
ratio
increase
until
elder
both
sexes,
odds
F/B
>
1
tended
with
age,
reaching
maximum
values
[OR
=
2.7
(95%
CI,
1.2–6.0)
OR
3.7
1.4–9.6)
for
female
male
60–69-year
groups,
respectively,
compared
same-sex
reference
(0–9-year)
groups].
Conclusions
conclusion,
data
our
study
indicate
intestinal
differs
groups.
tends
0–9-year
Further
studies
are
needed
a
better
understanding
mechanisms
underlying
composition.
Journal of Clinical Investigation,
Journal Year:
2021,
Volume and Issue:
131(12)
Published: June 14, 2021
Traumatic
brain
injury
(TBI)
is
a
chronic
and
progressive
disease,
management
requires
an
understanding
of
both
the
primary
neurological
secondary
sequelae
that
affect
peripheral
organs,
including
gastrointestinal
(GI)
tract.
The
brain-gut
axis
composed
bidirectional
pathways
through
which
TBI-induced
neuroinflammation
neurodegeneration
impact
gut
function.
resulting
dysautonomia
systemic
inflammation
contribute
to
GI
events,
dysmotility
increased
mucosal
permeability.
These
effects
shape,
are
shaped
by,
changes
in
microbiota
composition
activation
resident
recruited
immune
cells.
Microbial
products
cell
mediators
turn
modulate
activity.
Importantly,
enteric
inflammatory
challenges
prolong
worsen
neuropathology
neurobehavioral
deficits.
importance
communication
maintaining
homeostasis
highlights
it
as
viable
therapeutic
target
for
TBI.
Currently,
treatments
directed
toward
dysautonomia,
dysbiosis,
and/or
offer
most
promise.
Nature Communications,
Journal Year:
2021,
Volume and Issue:
12(1)
Published: Feb. 10, 2021
Abstract
The
gastrointestinal
tract
maintains
energy
and
glucose
homeostasis,
in
part
through
nutrient-sensing
subsequent
signaling
to
the
brain
other
tissues.
In
this
review,
we
highlight
role
of
small
intestinal
metabolic
link
high-fat
feeding,
obesity,
diabetes
with
perturbations
these
gut-brain
pathways.
We
identify
how
lipids,
carbohydrates,
proteins,
initiate
gut
peptide
release
from
enteroendocrine
cells
sensing
pathways,
peptides
regulate
food
intake,
tolerance,
hepatic
production.
Lastly,
microbiota
impact
normal
physiology,
disease,
pharmacological
surgical
settings.
Emerging
evidence
indicates
that
molecular
mechanisms
nutrient
homeostasis
have
physiological
pathological
as
well
therapeutic
potential
obesity
diabetes.
International Journal of Molecular Sciences,
Journal Year:
2021,
Volume and Issue:
22(17), P. 9452 - 9452
Published: Aug. 31, 2021
An
expanding
body
of
research
asserts
that
the
gut
microbiota
has
a
role
in
bone
metabolism
and
pathogenesis
osteoporosis.
This
review
considers
human
composition
its
osteoclastogenesis
healing
process,
specifically
case
Although
natural
physiologic
processes
osteoporosis
disease
are
now
relatively
well
known,
recent
literature
suggests
healthy
microbiome
is
tied
to
homeostasis.
Nevertheless,
mechanism
underlying
this
connection
still
somewhat
enigmatic.
Based
on
literature,
relationship
between
microbiome,
osteoblasts,
osteoclasts,
receptor
activator
nuclear
factor-kappa-Β
ligand
(RANKL)
contemplated
explored
review.
Studies
have
proposed
various
mechanisms
interaction
with
health,
including
micro-RNA,
insulin-like
growth
factor
1,
immune
system
mediation.
However,
alterations
secondary
pharmaceutical
surgical
interventions
cannot
be
discounted
discussed
context
clinical
therapeutic
consideration.
The
probiotics
their
action
examined
healing.
known
hypothesized
interactions
common
drugs
examined.
Since
dysbiosis
can
function
as
biomarker
metabolic
activity,
it
may
also
pharmacological
nutraceutical
(i.e.,
pre-
probiotics)
target
promote
Frontiers in Physiology,
Journal Year:
2021,
Volume and Issue:
12
Published: April 8, 2021
Short-chain
fatty
acids
(SCFAs)
are
the
main
metabolites
produced
by
bacterial
fermentation
of
dietary
fiber,
and
they
play
a
critical
role
in
maintenance
intestinal
health.
SCFAs
also
essential
for
modulating
different
processes,
have
anti-inflammatory
properties
immunomodulatory
effects.
As
inflammatory
process
predisposes
development
cancer
promotes
all
stages
tumorigenesis,
an
antitumor
effect
has
been
associated
with
SCFAs.
This
is
strongly
supported
epidemiological
studies
showing
that
diet
rich
fiber
linked
to
reduced
risk
colon
significant
clinical
benefits
patients
bowel
disease
(IBD).
may
signal
through
metabolite-sensing
G
protein-coupled
receptors
free
acid
receptor
3
[FFAR3
or
41
(GPR41)],
FFAR2
(GPR43),
GPR109A
(also
known
as
hydroxycarboxylic
2
HCAR2)
expressed
gut
epithelium
immune
cells.
review
summarizes
existing
knowledge
regarding
SCFA-mediated
suppression
inflammation
carcinogenesis
IBD
cancer.
International Journal of Molecular Sciences,
Journal Year:
2023,
Volume and Issue:
24(4), P. 3074 - 3074
Published: Feb. 4, 2023
Antibiotic
therapy
through
short-term
or
repeated
long-term
prescriptions
can
have
several
damaging
effects
on
the
normal
microbiota
of
gastrointestinal
tract.
Changes
in
could
be
multiple
including
decreased
diversity
species
gut
microbiota,
changed
metabolic
activity,
and
occurrence
antibiotic-resistant
strains.
Antibiotic-induced
dysbiosis
turn
induce
antibiotic-associated
diarrhoea
recurrent
infections
caused
by
Clostridioides
difficile.
There
is
also
evidence
that
use
different
chemical
classes
antibiotics
for
treatment
a
variety
ailments
lead
to
health
issues
gastrointestinal,
immunologic,
neurocognitive
conditions.
This
review
discusses
dysbiosis,
its
symptoms
one
important
cause,
which
antibiotic
induction
dysbiosis.
Since
maintenance
good
well-being
functioning
physiological
cognitive
activities
gut-microbiota-brain
relationship,
condition
not
desirable.
Specific
therapies
are
prescribed
medical
practitioners
cure
ailments,
and,
if
prescription
becomes
unavoidable,
there
possibility
onset
as
side
after
effects.
Therefore,
restoration
imbalanced
balanced
necessary.
A
healthy
relationship
between
brain
achieved
with
introduction
probiotic
strains
into
practical
consumer-friendly
way,
such
consumption
food
beverages
prepared
characterised
species,
fermented
foods
potential
biotics,
synbiotic
supplements.