Molecular and Cellular Endocrinology,
Journal Year:
2022,
Volume and Issue:
546, P. 111572 - 111572
Published: Jan. 20, 2022
The
role
of
the
intestinal
microbiota
as
a
regulator
gut-brain
axis
signalling
has
risen
to
prominence
in
recent
years.
Understanding
relationship
between
gut
microbiota,
metabolites
it
produces,
and
brain
will
be
critical
for
subsequent
development
new
therapeutic
approaches,
including
identification
novel
psychobiotics.
A
key
focus
this
regard
have
been
short-chain
fatty
acids
(SCFAs)
produced
by
bacterial
fermentation
dietary
fibre,
which
include
butyrate,
acetate,
propionate.
Ongoing
research
is
focused
on
entry
SCFAs
into
systemic
circulation
from
lumen,
their
migration
cerebral
across
blood
barrier,
potential
exert
acute
chronic
effects
structure
function.
This
review
aims
discuss
our
current
mechanistic
understanding
direct
indirect
influence
that
function,
behaviour
physiology,
inform
future
microbiota-targeted
interventions
disorders.
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
Microbiome,
Journal Year:
2019,
Volume and Issue:
7(1)
Published: June 13, 2019
The
human
gut
microbiome
is
a
critical
component
of
digestion,
breaking
down
complex
carbohydrates,
proteins,
and
to
lesser
extent
fats
that
reach
the
lower
gastrointestinal
tract.
This
process
results
in
multitude
microbial
metabolites
can
act
both
locally
systemically
(after
being
absorbed
into
bloodstream).
impact
these
biochemicals
on
health
complex,
as
potentially
beneficial
toxic
be
yielded
from
such
pathways,
some
cases,
effects
are
dependent
upon
metabolite
concentration
or
organ
locality.
aim
this
review
summarize
our
current
knowledge
how
macronutrient
metabolism
by
influences
health.
Metabolites
discussed
include
short-chain
fatty
acids
alcohols
(mainly
monosaccharides);
ammonia,
branched-chain
acids,
amines,
sulfur
compounds,
phenols,
indoles
(derived
amino
acids);
glycerol
choline
derivatives
(obtained
breakdown
lipids);
tertiary
cycling
carbon
dioxide
hydrogen.
Key
taxa
related
disease
states
will
referred
each
case,
gaps
could
contribute
understanding
overall
wellness
identified.
Nutrients,
Journal Year:
2019,
Volume and Issue:
11(7), P. 1613 - 1613
Published: July 16, 2019
The
gut
microbiome
plays
an
important
role
in
human
health
and
influences
the
development
of
chronic
diseases
ranging
from
metabolic
disease
to
gastrointestinal
disorders
colorectal
cancer.
Of
increasing
prevalence
Western
societies,
these
conditions
carry
a
high
burden
care.
Dietary
patterns
environmental
factors
have
profound
effect
on
shaping
microbiota
real
time.
Diverse
populations
intestinal
bacteria
mediate
their
beneficial
effects
through
fermentation
dietary
fiber
produce
short-chain
fatty
acids,
endogenous
signals
with
roles
lipid
homeostasis
reducing
inflammation.
Recent
progress
shows
that
individual's
starting
microbial
profile
is
key
determinant
predicting
response
intervention
live
probiotics.
complex
challenging
characterize.
Enterotypes
been
proposed
using
metrics
such
as
alpha
species
diversity,
ratio
Firmicutes
Bacteroidetes
phyla,
relative
abundance
genera
(e.g.,
Bifidobacterium,
Akkermansia)
versus
facultative
anaerobes
(E.
coli),
pro-inflammatory
Ruminococcus,
or
nonbacterial
microbes.
Microbiota
composition
bacterial
are
linked
physiologic
along
different
axes.
We
review
diet
quality,
carbohydrate
intake,
fermentable
FODMAPs,
prebiotic
maintaining
healthy
flora.
implications
discussed
for
various
including
obesity,
diabetes,
irritable
bowel
syndrome,
inflammatory
disease,
depression,
cardiovascular
disease.
Gut Microbes,
Journal Year:
2021,
Volume and Issue:
13(1)
Published: Jan. 1, 2021
The
functional
diversity
of
the
mammalian
intestinal
microbiome
far
exceeds
that
host
organism,
and
microbial
genes
contribute
substantially
to
well-being
host.
However,
beneficial
gut
organisms
can
also
be
pathogenic
when
present
in
or
other
locations
body.
Among
dominant
bacteria
are
several
species
CA A Cancer Journal for Clinicians,
Journal Year:
2020,
Volume and Issue:
70(4), P. 245 - 271
Published: June 9, 2020
Abstract
The
American
Cancer
Society
(ACS)
publishes
the
Diet
and
Physical
Activity
Guideline
to
serve
as
a
foundation
for
its
communication,
policy,
community
strategies
and,
ultimately,
affect
dietary
physical
activity
patterns
among
Americans.
This
guideline
is
developed
by
national
panel
of
experts
in
cancer
research,
prevention,
epidemiology,
public
health,
reflects
most
current
scientific
evidence
related
risk.
ACS
focuses
on
recommendations
individual
choices
regarding
diet
patterns,
but
those
occur
within
context
that
either
facilitates
or
creates
barriers
healthy
behaviors.
Therefore,
this
committee
presents
action
accompany
4
reduce
These
recognize
supportive
social
environment
indispensable
if
individuals
at
all
levels
society
are
have
genuine
opportunities
choose
2020
consistent
with
guidelines
from
Heart
Association
Diabetes
prevention
coronary
heart
disease
diabetes
well
general
health
promotion,
defined
2015
Dietary
Guidelines
Americans
2018