Journal of Agricultural and Food Chemistry,
Journal Year:
2023,
Volume and Issue:
71(46), P. 17819 - 17832
Published: Oct. 31, 2023
The
immunomodulatory
potential
of
certain
bacterial
strains
suggests
that
they
could
be
beneficial
in
the
treatment
rheumatoid
arthritis
(RA).
In
this
study,
we
investigated
effects
Bifidobacterium
longum
subsp.
infantis
B6MNI
on
progression
collagen-induced
(CIA)
rats
as
well
its
influence
gut
microbiota
and
fecal
metabolites.
Forty-eight
female
Wistar
were
divided
into
six
groups
included
a
group
with
CIA
intragastrically
administered
B.
(109
CFU/day/rat),
control
(CON),
group,
both
which
intracardiacally
same
volume
saline.
Rats
sacrificed
after
short-term
(ST,
4
weeks)
or
long-term
(LT,
6
administration.
results
indicate
can
modulate
metabolites,
including
5-hydroxyindole-3-acetic
acid
(5-HIAA),
turn
impacts
expression
Pim-1
immune
cell
differentiation,
then
through
JAK-STAT3
pathway
affects
joint
inflammation,
regulates
osteoclast
differentiation
factors,
delays
RA.
Our
also
suggest
is
most
efficacious
for
early
middle
stages
Microorganisms,
Journal Year:
2025,
Volume and Issue:
13(1), P. 150 - 150
Published: Jan. 13, 2025
Lactic
acid
Bacteria
(LAB)
convert
tryptophan
to
indole
derivatives
and
induce
protective
IL-22
production
in
vivo.
However,
differences
metabolizing
capabilities
among
LAB
species
have
not
been
widely
investigated.
In
the
present
study,
we
compared
of
186
strains
produce
four
kinds
derivatives,
including
indole-3-carboxaldehyde
(IAId),
indole-3-lactic
(ILA),
indole-3-propanoic
(IPA),
indole-3-acetic
(IAA).
These
were
isolated
from
fermented
foods,
dairy
products,
feces
healthy
individuals,
as
well
fish
shrimp
Shanxi
Jiangsu
provinces.
They
represent
15
genera,
Bifidobacterium,
Enterococcus,
Lacticaseibacillus,
Lactiplantibacillus,
Lactobacillus,
Lactococcus,
Limosilactobacillus,
Pediococcus,
Streptococcus,
Weissella,
Latilactobacillus,
Levilactobacillus,
Ligilactobacillus,
Loigolactobacillus.
The
results
indicate
widespread
IAId-producing
strains,
with
positive
rates
approximately
90%
(106/117)
100%
(69/69)
provinces,
respectively.
concentrations
IAId
ranged
72.42
ng/mL
423.14
all
Province
169.39
503.51
Province.
Intriguingly,
also
observed
specific
ILA-producing
Lactiplantibacillus
55.17%
(16/29)
80.95%
(17/21)
overall
detection
ILA
tested
(including
both
other
genus
strains)
17.9%
(21/117)
26.1%
(18/69).
12.22
101.86
5.75
62.96
IPA
IAA
detected
any
strains.
Finally,
these
derivative-producing
related
their
geographical
origins
or
isolation
sources.
current
study
provides
insights
into
species-
genus-dependent
for
derivatives.
Defining
roles
derivative
metabolism
will
uncover
exact
physiological
mechanisms
be
helpful
functional
strain
screening.
Frontiers in Plant Science,
Journal Year:
2025,
Volume and Issue:
16
Published: March 21, 2025
Bacillus
species
are
recognized
as
plant
growth-promoting
bacteria
(PGPB),
yet
the
mechanisms
behind
their
crop
growth
promotion
remain
elusive.
This
study
is
designed
to
explore
(PGP)
effects
of
megaterium
GXU087
on
soybeans
and
uncover
underlying
mechanism.
In
vitro
,
exhibited
various
PGP
traits,
including
phosphate
solubilization,
nitrogen
fixation,
production
exopolysaccharide,
biofilm
formation.
Pot
experiments
indicated
that
significantly
enhanced
soybean
growth,
leading
a
remarkable
increase
in
fresh
weight
(
p
<
0.05).
Additionally,
nodulation
parameters
were
improved.
Specifically,
10%
concentration
extracellular
extracts
from
exerted
significant
nodulation,
with
both
nodule
number
increasing
UPLC-MS
analysis
verified
secreted
indole-3-lactic
acid
(ILA)
at
232.7
ng/mL.
assays
further
demonstrated
this
ILA
effectively
promoted
within
range
0.1-10
mg/L.
However,
exogenous
application
did
not
stimulate
rhizobia
reproduction,
suggesting
bacterial
does
promote
by
enhancing
growth.
Notably,
first
report
B.
secreting
promoter
soybeans.
Our
findings
offer
new
insights
into
mechanism
action
contribute
understanding
microbe-induced
crops.
Applied and Environmental Microbiology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 7, 2025
ABSTRACT
Fermented
vegetables,
such
as
fermented
cabbage
(sauerkraut),
have
garnered
growing
interest
for
their
associations
with
a
myriad
of
health
benefits.
However,
the
mechanistic
details
underlying
outcomes
consuming
these
foods
require
further
investigation.
This
study
examined
capacity
soluble
metabolites
in
laboratory-scale
and
commercial-fermented
to
protect
against
disruption
polarized
Caco-2
monolayers
by
interferon
gamma
(IFN-γ)
tumor
necrosis
factor-alpha
(TNF-α).
Laboratory-scale
ferments
(LSF)
were
prepared
without
addition
Lactiplantibacillus
plantarum
NCIMB8826R
(LP8826R)
sampled
after
7
14
days
incubation.
Trans-epithelial
electrical
resistance
(TER)
paracellular
permeability
fluorescein
isothiocyanate
(FITC)-dextran
revealed
that
cabbage,
but
not
raw
or
brine,
protected
cytokine-induced
damage
monolayers.
Barrier-protective
effects
occurred
despite
increased
IL-8
production
following
cytokine
exposure.
Metabolomic
analyses
performed
using
gas
liquid
chromatography
resulted
identification
149
333
metabolites,
respectively.
Significant
differences
found
between
cabbage.
LSF
metabolomes
changed
over
time,
profiles
LP8826R
best
resembled
commercial
product.
Overall,
fermentation
lower
carbohydrate
lactic
acid,
lipid,
amino
acid
derivative
(including
D-phenyl-lactate
[D-PLA],
indole-3-lactate
[ILA],
γ-aminobutyric
[GABA]),
phenolic
compound
concentrations.
Lactate,
D-PLA,
ILA
tested
individually
combined
only
partially
TER
reductions
increases
The
findings
show
intestinal
barrier-protective
compounds
are
consistently
enriched
during
fermentations,
irrespective
scale
microbial
additions,
which
may
contribute
health-promoting
potential
foods.
IMPORTANCE
vegetables
increasingly
associated
importance
transformations
process
remains
be
determined.
We
spontaneously
epithelial
cells
induced
proinflammatory
cytokines.
Cabbage
fermentations
consistent
metabolome
bioactive
known
made
beneficial
members
human
gut
microbiome,
including
(D-PLA)
(ILA).
distinct
from
differentiated
lab
ferments,
sampling
presence
an
exogenous
strain.
Because
partial
protection
barrier
was
when
individual
(D-PLA,
ILA,
lactate)
applied,
indicate
complex
mixture
offers
advantages
single
benefit
health.
Gut Microbes,
Journal Year:
2025,
Volume and Issue:
17(1)
Published: May 7, 2025
Tryptophan-derived
indoles
produced
by
the
gut
microbiota,
particularly
indole-3-propionate
(IPA),
are
key
compounds
associated
with
gastrointestinal
balance
and
overall
health.
Reduced
levels
of
IPA
have
been
inflammatory
bowel
disease,
type
2
diabetes,
colorectal
cancer.
Since
fiber-rich
diets
shown
to
promote
IPA,
we
aimed
decipher
fiber-specific
effects
identify
IPA-producing
taxa
in
a
range
healthy
individuals.
We
cultured
fecal
microbiota
from
16
adults
tryptophan
eight
different
dietary
fibers
monitored
community
shifts
16S
rRNA
gene
amplicon
sequencing
tryptophan-derived
using
targeted
liquid
chromatography
diode
array
detection.
The
concentrations
types
were
donor-specific,
pectin
strongly
promoting
production
certain
donors.
was
not
any
known
producer
but
pectin-utilizing
species
Lachnospira
eligens,
which
indole-3-lactate
(ILA)
vitro,
precursor.
Supplementation
ILA
additional
cultures
(n
=
6)
revealed
its
effective
use
as
substrate
for
production.
identified
novel
producer,
Enterocloster
aldenensis,
exclusively
tryptophan.
Co-culture
L.
eligens
E.
aldenensis
resulted
production,
providing
new
evidence
an
cross-feeding
mechanism
that
may
contribute
IPA-promoting
observed
pectin.
Overall,
highlight
potential
interventions
beneficial
metabolites.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Nov. 3, 2023
Diet
can
protect
from
autoimmune
disease;
however,
whether
diet
acts
via
the
host
and/or
microbiome
remains
unclear.
Here,
we
use
a
ketogenic
(KD)
as
model
to
dissect
these
complex
interactions.
A
KD
rescued
experimental
encephalomyelitis
(EAE)
mouse
of
multiple
sclerosis
in
microbiota-dependent
fashion.
Dietary
supplementation
with
single
KD-dependent
metabolite
(β-hydroxybutyrate,
βHB)
EAE
whereas
transgenic
mice
unable
produce
βHB
intestine
developed
more
severe
disease.
Transplantation
βHB-shaped
gut
microbiota
was
protective.