FASEB BioAdvances,
Journal Year:
2021,
Volume and Issue:
3(11), P. 953 - 966
Published: Aug. 14, 2021
The
gut
immune
system
in
the
healthy
intestine
is
anti-inflammatory,
but
can
move
to
a
pro-inflammatory
state
when
challenged
by
pathogens
or
disease.
nervous
influences
level
of
inflammation
through
enteric
neurons
and
extrinsic
neural
connections,
particularly
vagal
sympathetic
innervation
gastrointestinal
tract,
each
which
exerts
anti-inflammatory
effects.
Within
(ENS),
three
neuron
types
that
influence
cells
have
been
identified,
intrinsic
primary
afferent
(IPANs),
vasoactive
intestinal
peptide
(VIP)
project
mucosa,
cholinergic
macrophages
external
muscle
layers.
neuropeptides,
calcitonin
gene-related
(CGRP),
tachykinins,
neuromedin
U
(NMU),
are
contained
IPANs,
VIP
produced
mucosa
innervating
neurons,
all
cells,
notably
innate
lymphoid
(ILCs).
ILC2
stimulated
release
IL-22,
promotes
microbial
defense
tissue
repair.
Enteric
innervated
vagus,
and,
large
intestine,
pelvic
nerves.
Vagal
nerve
stimulation
reduces
inflammation,
may
be
both
efferent
(motor)
pathways
ENS,
connect
integrating
centers
CNS.
Efferent
from
CNS
their
effects
either
pathways.
final
reduce
action
noradrenaline
on
β2
adrenergic
receptors
expressed
cells.
Activation
an
attractive
option
treat
inflammatory
bowel
disease
refractory
other
treatments.
Further
investigation
ways
reflexes,
integrate
modulate
needed
optimize
neuromodulation
therapy.
Current Opinion in Neurobiology,
Journal Year:
2019,
Volume and Issue:
61, P. 1 - 9
Published: Dec. 6, 2019
The
gut
microbiome
—
the
largest
reservoir
of
microorganisms
human
body
is
emerging
as
an
important
player
in
neurodevelopment
and
ageing
well
brain
diseases
including
stroke,
Alzheimer's
disease
Parkinson's
disease.
growing
knowledge
on
mediators
triggered
pathways
has
advanced
our
understanding
interactions
along
gut-brain
axis.
Gut
bacteria
produce
neuroactive
compounds
can
modulate
neuronal
function,
plasticity
behavior.
Furthermore,
intestinal
impact
host's
metabolism
immune
status
which
turn
affect
enteric
central
nervous
systems.
Here,
we
discuss
recent
insights
from
studies
animal
models
bi-directional
communication
microbiome-gut-brain
axis
both
acute
chronic
diseases.
Frontiers in Neuroscience,
Journal Year:
2021,
Volume and Issue:
15
Published: March 22, 2021
The
vagus
nerve
is
a
mixed
nerve,
comprising
80%
afferent
fibers
and
20%
efferent
fibers.
It
allows
bidirectional
communication
between
the
central
nervous
system
digestive
tract.
has
dual
anti-inflammatory
properties
via
activation
of
hypothalamic
pituitary
adrenal
axis,
by
its
afferents,
but
also
through
vago-vagal
inflammatory
reflex
involving
an
(vagal)
arm,
called
cholinergic
pathway.
Indeed,
release
acetylcholine
at
end
able
to
inhibit
tumor
necrosis
factor
(TNF)
alpha
macrophages
interneuron
enteric
synapsing
vagal
endings
releasing
acetylcholine.
synapses
with
splenic
sympathetic
TNF-alpha
macrophages.
can
activate
spinal
after
integration
afferents.
This
anti-TNF-alpha
effect
be
used
in
treatment
chronic
bowel
diseases,
represented
Crohn's
disease
ulcerative
colitis
where
this
cytokine
plays
key
role.
Bioelectronic
medicine,
stimulation,
may
have
interest
non-drug
therapeutic
approach
as
alternative
conventional
drugs,
which
are
not
devoid
side
effects
feared
patients.
Neurogastroenterology & Motility,
Journal Year:
2020,
Volume and Issue:
32(10)
Published: June 8, 2020
Abstract
Background
The
vagus
nerve
has
anti‐inflammatory
properties.
We
aimed
to
investigate
stimulation
(VNS)
as
a
new
therapeutic
strategy
targeting
an
intrinsic
pathway
in
pilot
study
Crohn's
disease
patients.
main
objectives
addressed
the
questions
of
long‐term
safety,
tolerability,
and
effects
this
therapy.
This
is
continuation
previous
reported
findings
at
6
months.
Methods
Nine
patients
with
moderate
active
underwent
VNS.
An
electrode
wrapped
around
left
cervical
was
continuously
stimulated
over
1
year.
Clinical,
biological,
endoscopic
parameters,
cytokines
(plasma,
gut),
mucosal
metabolites
were
followed‐up.
Key
Results
After
year
VNS,
five
clinical
remission
six
remission.
C‐reactive
protein
(CRP)
fecal
calprotectin
decreased
patients,
respectively.
Seven
restored
their
vagal
tone
digestive
pain
score.
patients'
cytokinergic
profile
evolved
toward
more
“healthy
profile”:
Interleukins
6,
23,
12,
tumor
necrosis
factor
α,
transforming
growth
factorβ1
most
impacted
cytokines.
Correlations
observed
between
CRP
some
gut
mucosa
taurine,
lactate,
alanine,
beta‐hydroxybutyrate.
VNS
well
tolerated.
Conclusion
&
Inferences
Vagus
appears
innovative
well‐tolerated
treatment
disease.
12
months,
homeostatic
reduced
inflammatory
state
probably
global
modulatory
effect
on
immune
system
along
metabolic
regulations.
needs
replication
larger
randomized
double‐blinded
control
study.
Proceedings of the National Academy of Sciences,
Journal Year:
2021,
Volume and Issue:
118(12)
Published: March 18, 2021
Significance
The
ability
of
vagus
nerve
stimulation
to
generate
anti-inflammatory
and
tissue-protective
effects
has
been
known
for
some
time.
We
have
made
use
cutting-edge
tools
precisely
map
the
neural
circuits
that
contribute
beneficial
stimulation.
Stimulation
was
specifically
restricted
either
afferent
or
efferent
neurons
in
by
genetically
programming
appropriate
cells
express
a
light-sensitive
cation
channel.
show
that,
while
both
signals
provide
protection
from
kidney
injury,
generates
sympathetic
response
protects
mice
absence
signals.
This
provides
an
insight
into
pathways
neuroimmune
potential
therapeutics.
International Journal of Molecular Sciences,
Journal Year:
2023,
Volume and Issue:
24(13), P. 10943 - 10943
Published: June 30, 2023
Aneurysmal
subarachnoid
hemorrhage
(aSAH)
is
one
of
the
most
severe
neurological
disorders,
with
a
high
mortality
rate
and
disabling
functional
sequelae.
Systemic
inflammation
following
hemorrhagic
stroke
may
play
an
important
role
in
mediating
intracranial
extracranial
tissue
damage.
Previous
studies
showed
that
various
systemic
inflammatory
biomarkers
might
be
useful
predicting
clinical
outcomes.
Anti-inflammatory
treatment
promising
therapeutic
approach
for
improving
prognosis
patients
aSAH.
This
review
summarizes
complicated
interactions
between
nervous
system
immune
system.