Neural Plasticity,
Journal Year:
2020,
Volume and Issue:
2020, P. 1 - 11
Published: Aug. 1, 2020
Stress
can
cause
a
variety
of
central
nervous
system
disorders,
which
are
critically
mediated
by
the
γ
-aminobutyric
acid
(GABA)
in
various
brain
structures.
GABAergic
neurons
have
different
subsets,
some
coexpress
certain
neuropeptides
that
be
found
digestive
system.
Accumulating
evidence
demonstrates
gut-brain
axis,
is
primarily
regulated
vagus
nerve,
involved
stress,
suggesting
communication
between
“gut-vagus-brain”
pathway
and
neuronal
Here,
we
first
summarize
plays
an
essential
role
stress
responses.
In
addition,
review
effects
on
regions
neuron
subpopulations,
including
somatostatin,
parvalbumin,
ionotropic
serotonin
receptor
5-HT3a,
cholecystokinin,
neuropeptide
Y,
vasoactive
intestinal
peptide,
with
regard
to
signaling
events,
behavioral
changes,
pathobiology
neuropsychiatric
diseases.
Finally,
discuss
bidirectional
communications
connection
gut-vagus-brain
pathway.
Physiological Reviews,
Journal Year:
2019,
Volume and Issue:
99(4), P. 1877 - 2013
Published: Aug. 28, 2019
The
importance
of
the
gut-brain
axis
in
maintaining
homeostasis
has
long
been
appreciated.
However,
past
15
yr
have
seen
emergence
microbiota
(the
trillions
microorganisms
within
and
on
our
bodies)
as
one
key
regulators
function
led
to
appreciation
a
distinct
microbiota-gut-brain
axis.
This
is
gaining
ever
more
traction
fields
investigating
biological
physiological
basis
psychiatric,
neurodevelopmental,
age-related,
neurodegenerative
disorders.
brain
communicate
with
each
other
via
various
routes
including
immune
system,
tryptophan
metabolism,
vagus
nerve
enteric
nervous
involving
microbial
metabolites
such
short-chain
fatty
acids,
branched
chain
amino
peptidoglycans.
Many
factors
can
influence
composition
early
life,
infection,
mode
birth
delivery,
use
antibiotic
medications,
nature
nutritional
provision,
environmental
stressors,
host
genetics.
At
extreme
diversity
diminishes
aging.
Stress,
particular,
significantly
impact
at
all
stages
life.
Much
recent
work
implicated
gut
many
conditions
autism,
anxiety,
obesity,
schizophrenia,
Parkinson’s
disease,
Alzheimer’s
disease.
Animal
models
paramount
linking
regulation
fundamental
neural
processes,
neurogenesis
myelination,
microbiome
activation
microglia.
Moreover,
translational
human
studies
are
ongoing
will
greatly
enhance
field.
Future
focus
understanding
mechanisms
underlying
attempt
elucidate
microbial-based
intervention
therapeutic
strategies
for
neuropsychiatric
Protein & Cell,
Journal Year:
2023,
Volume and Issue:
14(10), P. 762 - 775
Published: May 11, 2023
Abstract
The
gut
microbiota
has
been
found
to
interact
with
the
brain
through
microbiota–gut–brain
axis,
regulating
various
physiological
processes.
In
recent
years,
impacts
of
on
neurodevelopment
this
axis
have
increasingly
appreciated.
is
commonly
considered
regulate
three
pathways,
immune
pathway,
neuronal
and
endocrine/systemic
overlaps
crosstalks
in
between.
Accumulating
studies
identified
role
neurodevelopmental
disorders
including
autism
spectrum
disorder,
attention
deficit
hyperactivity
Rett
Syndrome.
Numerous
researchers
examined
pathophysiological
mechanisms
influenced
by
(NDDs).
This
review
aims
provide
a
comprehensive
overview
advancements
research
pertaining
microbiota-gut-brain
NDDs.
Furthermore,
we
analyzed
both
current
state
progress
discuss
future
perspectives
field.
Journal of Neuroendocrinology,
Journal Year:
2022,
Volume and Issue:
34(6)
Published: March 29, 2022
The
body
and
brain
are
in
constant
two-way
communication.
Driving
this
communication
is
a
region
the
lower
brainstem:
dorsal
vagal
complex.
Within
complex,
caudal
nucleus
of
solitary
tract
(cNTS)
major
first
stop
for
incoming
information
from
to
carried
by
vagus
nerve.
anatomy
makes
it
ideally
positioned
respond
signals
change
both
emotional
bodily
states.
In
turn,
cNTS
controls
activity
regions
throughout
that
involved
control
behaviour
physiology.
This
review
intended
help
anyone
with
an
interest
cNTS.
First,
I
provide
overview
architecture
outline
wide
range
neurotransmitters
expressed
subsets
neurons
Next,
detail,
discuss
known
inputs
outputs
briefly
highlight
what
regarding
neurochemical
makeup
function
those
connections.
Then,
one
group
neurons:
glucagon-like
peptide-1
(GLP-1)-expressing
neurons.
GLP-1
serve
as
good
example
neurons,
which
receive
input
varied
sources
have
ability
modulate
Finally,
consider
we
might
learn
about
other
our
study
why
important
remember
manipulation
molecularly
defined
likely
affect
physiology
behaviours
beyond
monitored
individual
experiments.
Psychophysiology,
Journal Year:
2025,
Volume and Issue:
62(2)
Published: Feb. 1, 2025
ABSTRACT
The
vagus
nerve
is
crucial
in
regulating
physiological
functions,
including
the
cardiovascular
system.
While
heart
rate
(HR)
and
its
variability
(HRV)
may
provide
non‐invasive
proxies
of
cardiac
vagal
activity,
transcutaneous
auricular
stimulation
(taVNS)
has
yielded
mixed
effects,
with
limited
research
on
right
branch
stimulation.
In
a
randomized
crossover
study
36
healthy
participants,
we
investigated
taVNS
effects
HR
HRV
indexed
by
SDRR,
RMSSD,
HF‐HRV,
LF/HF
ratio.
To
assess
impact
side
(left
vs.
ear)
indices
interaction
state,
recorded
electrocardiograms
four
sessions
per
person,
covering
three
session
phases:
baseline,
during
(taVNS
sham),
post‐milkshake
consumption
First,
found
moderate
evidence
against
affecting
(BF
10
=
0.21).
Second,
decreased
(multivariate
p
0.004)
independent
strong
for
RMSSD
15.11)
HF‐HRV
11.80).
Third,
taVNS‐induced
changes
were
comparable
across
sides
stronger
than
sham,
indicating
consistent
side.
We
conclude
that
reduces
as
SDRR
without
altering
HR,
contradicting
assumption
se
increases
cardiovagal
activity
increased
due
to
stimulating
afferents.
Instead,
our
results
support
role
afferent
activation
arousal.
Crucially,
both
can
safely
modulate
system
increasing
risk
bradycardia
or
causing
adverse
events
offering
new
treatment
possibilities.
Scientific Reports,
Journal Year:
2020,
Volume and Issue:
10(1)
Published: Nov. 27, 2020
Abstract
The
microbial
community
in
the
gut
is
influenced
by
environmental
factors,
especially
diet,
which
can
moderate
host
behaviour
through
microbiome-gut-brain
axis.
However,
ecological
relevance
of
microbiome-mediated
behavioural
plasticity
wild
animals
unknown.
We
presented
wild-caught
great
tits
(
Parus
major
)
with
a
problem-solving
task
and
showed
that
performance
was
weakly
associated
variation
microbiome.
then
manipulated
microbiome
feeding
birds
one
two
diets
differed
their
relative
levels
fat,
protein
fibre
content:
an
insect
diet
(low
content),
or
seed
(high
content).
Microbial
communities
were
less
diverse
among
individuals
given
compared
to
those
on
diet.
Individuals
likely
problem-solve
after
being
same
microbiota
metrics
altered
as
consequence
also
correlated
problem
solving
performance.
Although
effect
could
have
been
caused
motivational
nutritional
differences
between
our
treatments,
results
nevertheless
raise
possibility
dietary
induced
changes
be
important
mechanism
underlying
individual
populations.