A Dynamic Double‐Flow Gut‐On‐Chip Model for Predictive Absorption Studies In Vitro
Advanced Materials Technologies,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 25, 2025
Abstract
Human
gut
is
crucial
for
digestion,
drug
absorption,
and
overall
health;
however
traditional
in
vitro
animal
models
struggle
to
accurately
replicate
its
complex
mechanisms.
This
study
introduces
an
innovative
gut‐on‐chip
based
on
the
MIVO
millifluidic
device,
designed
faithfully
human
intestinal
environment.
CaCo‐2
HT‐29
cells
were
co‐cultured
under
different
ratio
dynamic
flow
conditions,
resembling
bloodstream.
Intestinal
tissue
differentiation
was
assessed
through
Trans‐epithelial
electrical
resistance
(TEER)
measurements,
Zonula
Occludens‐1,
Alcian
blue
staining.
After
model
establishment,
a
second
applied
apical
side
recapitulating
lumen
niche.
The
culture
conditions
significantly
reduced
cell
maturation
time,
obtaining
differentiated
layer
within
7‐10
days,
compared
21
days
of
static
culture.
In
addition,
CaCo‐2:HT‐29
co‐cultures
enables
finely
tune
mucus
thicknesses
barrier
function,
essential
studying
specific
conditions.
Furthermore,
introduction
double
apical‐basal
system
recapitulated
permeability
characteristics
more
closely
those
observed
vivo.
Double‐Flow
Gut‐on‐Chip
described
successfully
validated
cross‐correlate
function
epithelial
with
ratios,
finally
providing
predictive
useful
development
disease
modelling.
Language: Английский
Prebiotic fiber blend supports growth and development and favorable digestive health in puppies
Frontiers in Veterinary Science,
Journal Year:
2024,
Volume and Issue:
11
Published: May 30, 2024
A
healthy
gastrointestinal
(GI)
microbiome
has
been
shown
to
be
essential
for
proper
nutrient
absorption
and
metabolism,
maintenance
of
intestinal
epithelial
integrity
osmolarity,
gut
immunomodulation,
overall
health.
One
the
most
effective
ways
promote
a
GI
is
through
dietary
interventions,
such
as
addition
prebiotics.
Prebiotics
are
substrates
that
selectively
utilized
by
host
fermentation
confer
health
benefit.
However,
research
on
prebiotics
in
companion
animals
limited,
especially
growing
animals.
Thus,
this
study
was
conducted
assess
effects
novel
prebiotic
fiber
blend
key
parameters
related
growth
puppies.
Language: Английский
Effects of a Nutraceutical Treatment on the Intestinal Microbiota of Sled Dogs
Animals,
Journal Year:
2024,
Volume and Issue:
14(15), P. 2226 - 2226
Published: July 31, 2024
Dog
sledding
is
the
main
discipline
of
working
dogs
on
snow,
consisting
a
team
pulling
sled
under
guidance
owner.
To
carry
out
this
sport,
must
have
adequate
nutrition
and
vitamin
antioxidant
supplementation
to
ensure
that
physical
effort
optimal.
The
present
study
evaluated
effect
sporting
activity
stress
canine
intestinal
microbiota
by
dividing
into
two
groups:
control
group
did
not
take
any
nutraceutical
products
treated
which
product
was
administered.
administered
in
used
all
cases
dysbiosis
it
essential
quickly
restore
balanced
microbiota.
results
obtained
show
taking
nutraceutical,
there
an
increase
bacteria,
such
as
Streptococcus
spp.
E.
coli,
considered
enteropathogenic
detriment
beneficial
bacterial
species
Faecalibacterium
spp.,
Turicibacter
Blautia
Fusobacterium
Clostridium
hiranonis.
Instead,
with
displays
lower
amount
bacteria
great
other
for
animal’s
health.
Microbiotal
cane®
can
be
subject
intense
preventing
severe
alterations
at
ecosystem
levels
maintaining
composition
possible.
Language: Английский
Efficient gene editing of pig embryos by combining electroporation and lipofection
Qingyi Lin,
No information about this author
Nanaka Torigoe,
No information about this author
Bin Liu
No information about this author
et al.
Veterinary World,
Journal Year:
2024,
Volume and Issue:
unknown, P. 2701 - 2707
Published: Nov. 1, 2024
Mosaicism,
which
is
characterized
by
the
presence
of
wild-type
and
more
than
one
mutant
allele,
poses
a
serious
problem
in
zygotic
gene
modification
through
clustered
regularly
interspaced
short
palindromic
repeat
(CRISPR)/CRISPR-associated
protein
9
system.
Therefore,
we
used
pig
embryos
to
compare
editing
efficiencies
achieved
combining
electroporation
lipofection
using
different
aminopeptidase
N
(APN)-targeting
guide
RNA
(gRNA)
sequences.
Six
gRNAs
(gRNA1-6)
with
target
sequences
were
designed
APN.
Zona
pellucida
(ZP)-intact
zygotes
collected
10
h
after
start
vitro
fertilization
(IVF)
electroporated
each
gRNA
their
efficiency.
The
that
lowest
highest
mutation
rates
(gRNA4
gRNA6,
respectively)
selected
for
additional
assess
efficiency
following
combined
treatment.
As
ZP
removal
essential
lipofection,
ZP-free
gRNA4
or
gRNA6
IVF
initiation,
followed
same
24
29
initiation.
ZP-intact
as
controls.
exhibited
rates,
respectively.
gRNA4-targeted
subjected
initiation
significantly
higher
total
biallelic
received
only
electroporation.
Additional
gRNA6-targeted
had
no
obvious
effect
on
rates.
Electroporation
low
may
improve
embryos.
However,
effects
vary
based
timing
editing.
Language: Английский
Postbiotic studies of mixed cultures of Schleiferilactobacillus harbinensis LH991 and Pichia kudriavzevii B-5P produced by in vitro rumen producing short-chain fatty acid
Veterinary World,
Journal Year:
2024,
Volume and Issue:
unknown, P. 2694 - 2700
Published: Nov. 1, 2024
Postbiotics
are
functional
bioactive
compounds
or
molecules
with
beneficial
effects
on
health
and
activities
in
humans
livestock,
produced
by
probiotic
bacteria
yeast.
Several
postbiotics,
including
enzymes,
short-chain
fatty
acids,
amino
extracellular
polysaccharides,
microbial
cell
fragments,
teichoic
currently
being
widely
studied.
This
study
aimed
to
explore
the
potential
of
secondary
metabolites
Schleiferilactobacillus
harbinensis
LH
991
Pichia
kudriavzevii
B-5P
as
lactic
acid
(LAB)
yeast
isolated
from
Budu
(fermented
fish)
which
can
act
postbiotics
through
vitro
rumen
fermentation.
The
method
used
a
completely
randomized
design
5
×
4,
five
treatments
four
replications.
substrate
diet
consisted
60%
forage
40%
concentrate.
culture
mixture
was
1.3
1011
CFU/mL
50%:50%
ratio
S.
P.
B-5P.
inoculum
concentrations
this
were
0%
(control),
1%,
2%,
3%,
4%.
Treatments
arranged
based
differences
concentration
follows:
T0:
control
(0%);
T1:
1%;
T2:
2%;
T3:
3%;
T4:
T4
group
showed
significant
increase
(p
<
0.01)
acids
(SCFA),
acetate,
propionate,
butyrate,
valerate,
isobutyrate,
isovalerate
compared
other
treatments.
Meanwhile,
shows
that
there
is
no
>
effect
digestibility
(in
dry
matter
digestibility,
organic
crude
fiber
digestibility).
However,
highly
volatile
total,
NH3,
protein
synthesis.
It
concluded
treatment
4%
(T4)
containing
LAB
increased
SCFA
fermentation
significantly,
whereas
it
did
not
affect
digestibility.
Language: Английский