JAMA Psychiatry,
Journal Year:
2021,
Volume and Issue:
78(12), P. 1343 - 1343
Published: Sept. 15, 2021
Evidence
of
gut
microbiota
perturbations
has
accumulated
for
multiple
psychiatric
disorders,
with
signatures
proposed
as
potential
biomarkers.
However,
no
attempts
have
been
made
to
evaluate
the
specificity
these
across
range
conditions.
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
Frontiers in Microbiology,
Journal Year:
2018,
Volume and Issue:
9
Published: Aug. 14, 2018
Interest
toward
the
human
microbiome,
particularly
gut
microbiome
has
flourished
in
recent
decades
owing
to
rapidly
advancing
sequence-based
screening
and
humanized
gnotobiotic
model
interrogating
dynamic
operations
of
commensal
microbiota.
Although
this
field
is
still
at
a
very
preliminary
stage,
whereby
functional
properties
complex
remain
less
understood,
several
promising
findings
have
been
documented
exhibit
great
potential
revolutionizing
disease
etiology
medical
treatments.
In
review,
interactions
between
microbiota
host
focused
on,
provide
an
overview
role
their
unique
metabolites
conferring
protection
against
invading
pathogen,
regulation
diverse
physiological
functions
including
metabolism,
development
homeostasis
immunity
nervous
system.
We
elaborate
on
how
microbial
imbalance
(dysbiosis)
may
lead
dysfunction
machineries,
thereby
contributing
pathogenesis
and/or
progression
broad
spectrum
diseases.
Some
most
notable
diseases
namely
Clostridium
difficile
infection
(infectious
disease),
inflammatory
bowel
(intestinal
immune-mediated
celiac
(multisystemic
autoimmune
disorder),
obesity
(metabolic
colorectal
cancer,
autism
disorder
(neuropsychiatric
disorder)
discussed
delineated
along
with
findings.
Novel
therapies
derived
from
studies
such
as
fecal
transplantation,
probiotic
prebiotics
target
associated
reviewed
introduce
idea
certain
symptoms
can
be
ameliorated
through
dysbiosis
correction,
thus
revealing
new
scientific
approach
treatment.
Toward
end
research
gaps
limitations
described
suggested
future
overcome
current
lacunae.
Despite
ongoing
debate
whether
plays
above-mentioned
diseases,
we
gathered
evidence
showing
potentially
far
more
link
beyond
unidirectional
cause-and-effect
relationship
them.
Neurobiology of Stress,
Journal Year:
2017,
Volume and Issue:
7, P. 124 - 136
Published: March 19, 2017
The
importance
of
the
gut–brain
axis
in
regulating
stress-related
responses
has
long
been
appreciated.
More
recently,
microbiota
emerged
as
a
key
player
control
this
axis,
especially
during
conditions
stress
provoked
by
real
or
perceived
homeostatic
challenge.
Diet
is
one
most
important
modifying
factors
microbiota-gut-brain
axis.
routes
communication
between
and
brain
are
slowly
being
unravelled,
include
vagus
nerve,
gut
hormone
signaling,
immune
system,
tryptophan
metabolism,
microbial
metabolites
such
short
chain
fatty
acids.
early
life
shaping
later
health
outcomes
also
emerging.
Results
from
preclinical
studies
indicate
that
alterations
composition
way
antibiotic
exposure,
lack
breastfeeding,
birth
Caesarean
section,
infection,
other
environmental
influences
-
coupled
with
influence
host
genetics
can
result
long-term
modulation
physiology
behaviour.
implicated
variety
including
anxiety,
depression
irritable
bowel
syndrome,
although
largely
based
on
animal
correlative
analysis
patient
populations.
Additional
research
humans
sorely
needed
to
reveal
relative
impact
causal
contribution
microbiome
disorders.
In
regard,
concept
psychobiotics
developed
refined
encompass
methods
targeting
order
positively
mental
outcomes.
At
2016
Neurobiology
Stress
Workshop
Newport
Beach,
CA,
group
experts
presented
symposium
“The
Microbiome:
Development,
Stress,
Disease”.
This
report
summarizes
builds
upon
some
concepts
within
context
how
might
neurobiology
stress.