Microorganisms,
Journal Year:
2024,
Volume and Issue:
12(4), P. 747 - 747
Published: April 7, 2024
The
cecal
microbial
community
plays
an
important
role
in
chicken
growth
and
development
via
effective
feed
conversion
essential
metabolite
production.
aim
of
this
study
was
to
define
the
community’s
variants
chickens’
ceca
explore
most
significant
association
between
microbiome
compositions
poultry
farming
productivity.
meta-analysis
included
original
data
from
8
control
broiler
groups
fed
with
a
standard
basic
diet
32
experimental
supplemented
various
additives.
Standard
Illumina
16S-RNA
gene
sequencing
technology
used
characterize
microbiome.
Zootechnical
sets
integrated
European
Production
Effectiveness
Factor
(EPEF)
were
collected.
Analysis
bacterial
taxa
abundance
co-occurrence
microbiomes
revealed
two
alternative
patterns:
Bacteroidota-dominated
decreased
alpha
biodiversity;
Bacillota-enriched,
which
Actinomycetota,
Cyanobacteriota
Thermodesulfobacteriota
phyla
members,
increased
biodiversity
indices.
Bacillota-enriched
showed
elevated
total
intake
(especially
due
starter
intake)
final
body
weight,
high
EPEF
values,
while
negatively
associated
results
lay
basis
for
growth-promoting
supplementations,
aimed
at
stimulation
beneficial
inhibition
harmful
patterns,
where
relevant
metagenomic
can
be
tool
their
selection.
Microbiome,
Journal Year:
2022,
Volume and Issue:
10(1)
Published: July 8, 2022
Abstract
Background
The
16S
rRNA
gene
is
used
extensively
in
bacterial
phylogenetics,
species
delineation,
and
now
widely
microbiome
studies.
However,
the
suffers
from
intragenomic
heterogeneity,
reports
of
recombination
an
unreliable
phylogenetic
signal
are
accumulating.
Here,
we
compare
core
phylogenies
to
constructed
using
concatenations
estimate
strength
for
gene,
its
hypervariable
regions,
all
genes
at
intra-
inter-genus
levels.
Specifically,
perform
four
intra-genus
analyses
(
Clostridium
,
n
=
65;
Legionella
47;
Staphylococcus
36;
Campylobacter
17)
one
analysis
[41
genera
human
gut
(31
families,
17
orders,
12
classes),
82].
Results
At
both
taxonomic
levels,
was
recombinant
subject
horizontal
transfer.
level,
showed
lowest
levels
concordance
with
genome
phylogeny
(50.7%
average).
Concordance
regions
lower
still,
entropy
masking
providing
little
no
benefit.
A
major
factor
influencing
SNP
count,
which
a
positive
logarithmic
association.
Using
this
relationship,
determined
that
690
±
110
SNPs
were
required
80%
(average
count
254).
We
also
found
wide
range
16S-23S-5S
operon
copy
number
among
genomes
(1–27).
whole
markedly
higher
(73.8%
—
10th
out
49
loci);
however,
most
concordant
(V4,
V3-V4,
V1-V2)
ranked
third
quartile
(62.5
60.0%).
Conclusions
Ramifications
poor
performance
far
reaching.
For
example,
addition
incorrect
species/strain
delineation
inference,
it
has
potential
confound
community
diversity
metrics
if
information
incorporated
popular
approaches
such
as
Faith’s
UniFrac.
Our
results
highlight
problematic
nature
these
their
use
(along
masking)
discouraged.
Lastly,
strong
metrics.
Abstract
The
human
gastrointestinal
(GI)
tract
harbors
diverse
microbes,
and
the
family
Lachnospiraceae
is
one
of
most
abundant
widely
occurring
bacterial
groups
in
GI
tract.
Beneficial
adverse
effects
on
host
health
were
reported,
but
diversities
at
species/strain
levels
as
well
their
metabolites
have
been,
so
far,
not
documented.
In
present
study,
we
report
collection
77
h
uman‐originated
L
a
ch
nospiraceae
sp
ecies
(please
refer
hLchsp,
https://hgmb.nmdc.cn/subject/lachnospiraceae
)
vitro
metabolite
profiles
110
strains
(
https://hgmb.nmdc.cn/subject/lachnospiraceae/metabolites
).
hLchsp
produced
242
17
categories.
larger
categories
alcohols
(89),
ketones
(35),
pyrazines
(29),
short
(C2–C5),
long
(C
>
5)
chain
acids
(31),
phenols
(14),
aldehydes
other
30
compounds.
Among
them,
22
aromatic
well‐known
beneficial
gut
microbial
metabolite,
butyric
acid,
was
generally
by
many
strains,
Agathobacter
rectalis
strain
Lach‐101
Coprococcus
comes
NSJ‐173
top
2
acid
producers,
331.5
310.9
mg/L
vitro,
respectively.
Further
analysis
publicly
available
cohort‐based
volatile‐metabolomic
data
sets
feces
revealed
that
over
30%
prevailing
volatile
covered
identified
this
study.
This
study
provides
resources
together
with
metabolic
for
future
studies
host–microbe
interactions
developments
novel
probiotics
or
biotherapies.
Science,
Journal Year:
2023,
Volume and Issue:
381(6657)
Published: Aug. 3, 2023
A
mechanistic
understanding
of
how
microbial
proteins
affect
the
host
could
yield
deeper
insights
into
gut
microbiota-host
cross-talk.
We
developed
an
enzyme
activity-screening
platform
to
investigate
microbiota-derived
enzymes
might
influence
physiology.
discovered
that
dipeptidyl
peptidase
4
(DPP4)
is
expressed
by
specific
bacterial
taxa
microbiota.
Microbial
DPP4
was
able
decrease
active
glucagon
like
peptide-1
(GLP-1)
and
disrupt
glucose
metabolism
in
mice
with
a
leaky
gut.
Furthermore,
current
drugs
targeting
human
DPP4,
including
sitagliptin,
had
little
effect
on
DPP4.
Using
high-throughput
screening,
we
identified
daurisoline-d4
(Dau-d4)
as
selective
inhibitor
improves
tolerance
diabetic
mice.
Cell,
Journal Year:
2024,
Volume and Issue:
187(11), P. 2717 - 2734.e33
Published: April 22, 2024
The
gut
microbiota
has
been
found
to
play
an
important
role
in
the
progression
of
metabolic
dysfunction-associated
steatohepatitis
(MASH),
but
mechanisms
have
not
established.
Here,
by
developing
a
click-chemistry-based
enrichment
strategy,
we
identified
several
microbial-derived
bile
acids,
including
previously
uncharacterized
3-succinylated
cholic
acid
(3-sucCA),
which
is
negatively
correlated
with
liver
damage
patients
liver-tissue-biopsy-proven
fatty
disease
(MAFLD).
By
screening
human
bacterial
isolates,
Bacteroides
uniformis
strains
as
effective
producers
3-sucCA
both
vitro
and
vivo.
activity-based
protein
purification
identification,
enzyme
annotated
β-lactamase
B.
responsible
for
biosynthesis.
Furthermore,
that
lumen-restricted
metabolite
alleviates
MASH
promoting
growth
Akkermansia
muciniphila.
Together,
our
data
offer
new
insights
into
microbiota-liver
axis
may
be
leveraged
augment
management
MASH.
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: Jan. 14, 2025
Human
gut
Bacteroides
and
Parabacteroides
species
play
crucial
roles
in
human
health
are
known
for
their
capacity
to
utilize
diverse
polysaccharides.
Understanding
how
these
bacteria
medicinal
polysaccharides
is
foundational
developing
polysaccharides-based
prebiotics
drugs.
Here,
we
systematically
mapped
the
utilization
profiles
of
20
different
by
28
species.
The
growth
exhibited
substantial
variation
across
bacterial
Ginseng
promoted
multiple
species;
contrast,
Dendrobium
selectively
uniformis.
This
distinct
profile
was
associated
with
genomic
carbohydrate-active
enzymes,
rather
than
monosaccharides
composition
among
Through
comparative
transcriptomics
genetical
manipulation,
validated
that
polysaccharide
locus
PUL34_Bu
enabled
uniformis
(i.e.
glucomannan).
In
addition,
found
GH26
enzyme
allowed
plant-derived
mannan.
Overall,
our
results
revealed
selective
provided
insights
into
use
engineering
microbiome.
authors
characterize
species,
revealing
variability
responses,
which
they
link
differences
enzymes.
Scientific Reports,
Journal Year:
2021,
Volume and Issue:
11(1)
Published: May 31, 2021
Exploiting
a
pure
culture
strategy
to
investigate
the
composition
of
human
gut
microbiota,
two
novel
anaerobes,
designated
strains
AF52-21T
and
CM04-06T,
were
isolated
from
faeces
healthy
Chinese
donors
characterized
using
polyphasic
approach.
The
observed
be
gram-negative,
non-motile,
rod-shaped.
Both
grew
optimally
at
37
°C
pH
7.0.
Phylogenetic
analysis
based
on
16S
rRNA
gene
sequences
revealed
that
clustered
with
species
genus
Faecalibacterium
most
closely
related
prausnitzii
ATCC
27768T
sequence
similarity
97.18%
96.87%,
respectively.
isolates
shared
identity
98.69%.
Draft
genome
sequencing
was
performed
for
generating
sizes
2.85
Mbp
3.01
Mbp.
calculated
average
nucleotide
values
between
genomes
CM04-06T
compared
83.20%
82.54%,
respectively,
90.09%
when
comparing
CM04-06T.
below
previously
proposed
threshold
(95-96%),
supporting
their
recognition
as
in
Faecalibacterium.
genomic
DNA
G
+
C
contents
57.77
mol%
57.51
mol%,
Based
phenotypic,
chemotaxonomic
phylogenetic
characteristics,
we
conclude
both
represent
new
species,
which
names
butyricigenerans
sp.
nov.
(type
strain
=
CGMCC
1.5206T
DSM
103434T)
longum
1.5208T
103432T)
are
proposed.