Biochemical Journal,
Journal Year:
2017,
Volume and Issue:
474(11), P. 1823 - 1836
Published: May 16, 2017
The
human
gastrointestinal
(GI)
tract
harbours
a
complex
and
dynamic
population
of
microorganisms,
the
gut
microbiota,
which
exert
marked
influence
on
host
during
homeostasis
disease.
Multiple
factors
contribute
to
establishment
microbiota
infancy.
Diet
is
considered
as
one
main
drivers
in
shaping
across
life
time.
Intestinal
bacteria
play
crucial
role
maintaining
immune
metabolic
protecting
against
pathogens.
Altered
bacterial
composition
(dysbiosis)
has
been
associated
with
pathogenesis
many
inflammatory
diseases
infections.
interpretation
these
studies
relies
better
understanding
inter-individual
variations,
heterogeneity
communities
along
GI
tract,
functional
redundancy
need
distinguish
cause
from
effect
states
dysbiosis.
This
review
summarises
our
current
development
its
impact
integrity
health,
underlying
for
mechanistic
focusing
host–microbe
interactions.
Proceedings of the National Academy of Sciences,
Journal Year:
2017,
Volume and Issue:
114(40), P. 10713 - 10718
Published: Sept. 11, 2017
Significance
We
have
experimentally
investigated
the
immunoregulatory
effects
of
human
gut
microbiota
in
multiple
sclerosis
(MS).
identified
specific
bacteria
that
are
associated
with
MS
and
demonstrated
these
regulate
T
lymphocyte-mediated
adaptive
immune
responses
contribute
to
proinflammatory
environment
vitro
vivo.
Thus,
our
results
expand
knowledge
microbial
regulation
immunity
may
provide
a
basis
for
development
microbiome-based
therapeutics
autoimmune
diseases.
Microbiome,
Journal Year:
2021,
Volume and Issue:
9(1)
Published: Sept. 7, 2021
Abstract
Background
Alteration
of
the
gut
microbiota
may
contribute
to
development
inflammatory
bowel
disease
(IBD).
Epigallocatechin-3-gallate
(EGCG),
a
major
bioactive
constituent
green
tea,
is
known
be
beneficial
in
IBD
alleviation.
However,
it
unclear
whether
exerts
an
effect
when
EGCG
attenuates
IBD.
Results
We
first
explored
oral
or
rectal
delivery
on
DSS-induced
murine
colitis.
Our
results
revealed
that
anti-inflammatory
and
colonic
barrier
integrity
were
enhanced
by
oral,
but
not
rectal,
EGCG.
observed
distinct
EGCG-mediated
alteration
microbiome
increasing
Akkermansia
abundance
butyrate
production.
Next,
we
demonstrated
pre-supplementation
induced
similar
outcomes
administration.
Prophylactic
attenuated
colitis
significantly
enriched
short-chain
fatty
acids
(SCFAs)-producing
bacteria
such
as
SCFAs
production
mice.
To
validate
these
discoveries,
performed
fecal
transplantation
(FMT)
sterile
filtrate
(SFF)
inoculate
DSS-treated
Microbiota
from
EGCG-dosed
mice
alleviated
over
control
SFF
shown
superiorly
integrity,
also
SCFAs.
Collectively,
attenuation
suggests
intimate
involvement
SCFAs-producing
,
SCFAs,
which
was
further
prophylaxis
FMT.
Conclusions
This
study
provides
data
indicating
ameliorated
inflammation
microbiota-dependent
manner.
findings
provide
novel
insights
into
remission
potential
modulator
for
prevent
treat
PLoS ONE,
Journal Year:
2017,
Volume and Issue:
12(3), P. e0173004 - e0173004
Published: March 1, 2017
Gut
barrier
function
is
key
in
maintaining
a
balanced
response
between
the
host
and
its
microbiome.
The
microbiota
can
modulate
changes
gut
as
well
metabolic
inflammatory
responses.
This
highly
complex
system
involves
numerous
microbiota-derived
factors.
symbiont
Akkermansia
muciniphila
positively
correlated
with
lean
phenotype,
reduced
body
weight
gain,
amelioration
of
responses
restoration
by
modulation
mucus
layer
thickness.
However,
molecular
mechanisms
behind
immunological
regulatory
properties
are
unexplored.
Herein,
we
identify
abundant
outer
membrane
pili-like
protein
A.
MucT
that
directly
involved
immune
regulation
enhancement
trans-epithelial
resistance.
purified
Amuc_1100
enrichments
containing
all
associated
proteins
induced
production
specific
cytokines
through
activation
Toll-like
receptor
(TLR)
2
TLR4.
mainly
leads
to
high
levels
IL-10
similar
those
other
beneficial
suppressive
microorganisms
such
Faecalibacterium
prausnitzii
A2-165
Lactobacillus
plantarum
WCFS1.
Together
these
results
indicate
composition
particularly
newly
identified
homeostasis
at
mucosa,
improvement
function.