mSystems,
Journal Year:
2024,
Volume and Issue:
9(6)
Published: May 7, 2024
Gut
dysbiosis
has
been
associated
with
impaired
outcomes
in
liver
and
kidney
transplant
recipients,
but
the
gut
microbiome
of
lung
recipients
not
extensively
explored.
We
assessed
64
fecal
samples
from
end-stage
disease
patients
before
transplantation
219
after
using
metagenomic
sequencing.
To
identify
dysbiotic
microbial
signatures,
we
analyzed
243
age-,
sex-,
BMI-matched
healthy
controls.
By
unsupervised
clustering,
identified
five
groups
different
combinations
immunosuppressants
antibiotics
them
relation
to
microbiome.
Finally,
investigated
chronic
allograft
dysfunction
(CLAD)
stages
longitudinal
changes
transplantation.
found
108
species
(58.1%)
139
(74.7%)
that
were
differentially
abundant
compared
controls,
several
exhibiting
sharp
increases
Different
specific
signatures.
CLAD
stage
0
was
more
similar
controls
those
1.
diversity
remained
lower
than
average
up
20
years
post-transplantation.
dysbiosis,
already
present
exacerbated
following
transplantation.IMPORTANCEThis
study
provides
extensive
insights
into
which
warrants
further
investigation
can
be
used
for
microbiome-targeted
interventions
could
improve
outcome
Frontiers in Microbiology,
Journal Year:
2023,
Volume and Issue:
14
Published: March 30, 2023
Acute
exacerbation
of
chronic
obstructive
pulmonary
disease
(AECOPD)
is
associated
with
high
mortality
rates.
Viral
and
bacterial
coinfection
the
primary
cause
AECOPD.
How
these
microbes
influences
host
inflammatory
response
gut
microbiota
composition
not
entirely
understood.We
developed
a
mouse
model
AECOPD
by
cigarette
smoke
exposure
sequential
infection
influenza
H1N1
virus
non-typeable
Haemophilus
influenzae
(NTHi).
titer
was
determined
using
MDCK
cells
chocolate
agar
plates,
respectively.
The
levels
cytokines,
adhesion
molecules,
in
lungs
were
measured
Bio-Plex
flow
cytometry
assays.
Gut
analyzed
16S
rRNA
gene
sequencing.
Correlations
between
cytokines
Spearman's
rank
correlation
coefficient
test.Coinfection
NTHi
resulted
more
severe
lung
injury,
higher
mortality,
declined
function
COPD
mice.
enhanced
growth
lungs,
but
had
no
effect
on
H1N1.
In
addition,
increased
as
well
immune
including
total
M1
macrophages,
neutrophils,
monocytes,
NK
cells,
CD4
+
T
cells.
contrast,
alveolar
macrophages
depleted.
Furthermore,
caused
decline
diversity
bacteria.
Muribaculaceae,
Lactobacillus,
Akkermansia,
Lachnospiraceae,
Rikenella
further
found
to
be
negatively
correlated
cytokine
levels,
whereas
Bacteroides
positively
correlated.Coinfection
causes
deterioration
mice
due
inflammation,
which
dysbiosis
microbiota.
Aging,
Journal Year:
2024,
Volume and Issue:
16(4), P. 3241 - 3256
Published: Feb. 12, 2024
This
study
aimed
to
explore
the
profile
of
gut
microbiota
and
immunological
state
in
COPD
patients.
80
fecal
blood
samples
were
collected
from
40
patients
healthy
controls
(HC)
analyzed
with
16s-rRNA
gene
sequencing
immunofactor
omics
analysis
investigate
immunologic
factors
(IFs).
The
linear
discriminant
(LDA)
effect
size
(LefSe)
was
used
determine
biomarkerâs
taxa.
random
forest
LASSO
regression
executed
screen
IFs
develop
an
IFscore
model.
correlation
between
IFs,
along
diversity
microbiota,
evaluated
Spearman
analysis.
α
β
showed
that
composition
distribution
group
differed
HC
group.
7
differential
taxa
at
phylum
level
17
genus
found.
LefSe
screened
out
5
32
(up-regulated
27
down-regulated
IFs)
identified
two
groups,
(CCL3,
CXCL9,
CCL7,
IL2,
IL4)
construct
revealed
29
highly
related
enriched
16
pathways.
Furthermore,
relationship
very
close.
individuals.
Gut
immune
status
mSystems,
Journal Year:
2024,
Volume and Issue:
9(6)
Published: May 7, 2024
Gut
dysbiosis
has
been
associated
with
impaired
outcomes
in
liver
and
kidney
transplant
recipients,
but
the
gut
microbiome
of
lung
recipients
not
extensively
explored.
We
assessed
64
fecal
samples
from
end-stage
disease
patients
before
transplantation
219
after
using
metagenomic
sequencing.
To
identify
dysbiotic
microbial
signatures,
we
analyzed
243
age-,
sex-,
BMI-matched
healthy
controls.
By
unsupervised
clustering,
identified
five
groups
different
combinations
immunosuppressants
antibiotics
them
relation
to
microbiome.
Finally,
investigated
chronic
allograft
dysfunction
(CLAD)
stages
longitudinal
changes
transplantation.
found
108
species
(58.1%)
139
(74.7%)
that
were
differentially
abundant
compared
controls,
several
exhibiting
sharp
increases
Different
specific
signatures.
CLAD
stage
0
was
more
similar
controls
those
1.
diversity
remained
lower
than
average
up
20
years
post-transplantation.
dysbiosis,
already
present
exacerbated
following
transplantation.IMPORTANCEThis
study
provides
extensive
insights
into
which
warrants
further
investigation
can
be
used
for
microbiome-targeted
interventions
could
improve
outcome