Abstract
Background
Microdeletion
of
the
human
chromosomal
region
16p11.2
(16p11.2
$${}^{+/-}$$
+/-
)
is
a
prevalent
genetic
factor
associated
with
autism
spectrum
disorder
(ASD)
and
other
neurodevelopmental
disorders.
However
its
pathogenic
mechanism
remains
unclear,
effective
treatments
for
syndrome
are
lacking.
Emerging
evidence
suggests
that
gut
microbiota
metabolites
inextricably
linked
to
host
behavior
through
gut-brain
axis
therefore
implicated
in
ASD
development.
Despite
this,
functional
roles
microbial
context
yet
be
elucidated.
This
study
aims
investigate
therapeutic
potential
indole-3-propionic
acid
(IPA),
metabolite,
addressing
behavioral
neural
deficits
,
as
well
underlying
molecular
mechanisms.
Results
Mice
showed
dysbiosis
significant
decrease
IPA
levels
feces
blood
circulation.
Further,
these
mice
exhibited
social
cognitive
memory
impairments,
along
hyperactivation
hippocampal
dentate
gyrus
neurons
reduced
inhibitory
synaptic
transmission
this
region.
However,
oral
administration
effectively
mitigated
histological
electrophysiological
alterations,
thereby
ameliorating
mice.
Remarkably,
treatment
significantly
increased
phosphorylation
level
ERK1,
protein
encoded
by
Mapk3
gene
region,
without
affecting
transcription
translation
gene.
Conclusions
Our
reveals
leads
decline
metabolite
levels;
however,
supplementation
notably
reverses
phenotypes
These
findings
provide
new
insights
into
critical
role
pathogenesis
present
promising
strategy
deficit
disorders,
such
microdeletion
syndrome.
Neuron,
Год журнала:
2022,
Номер
110(9), С. 1559 - 1572.e4
Опубликована: Фев. 17, 2022
The
hippocampus
is
essential
for
different
forms
of
declarative
memory,
including
social
the
ability
to
recognize
and
remember
a
conspecific.
Although
recent
studies
identify
importance
dorsal
CA2
region
in
memory
storage,
little
known
about
its
sources
information.
Because
CA2,
like
other
hippocampal
regions,
receives
major
source
spatial
non-spatial
information
from
medial
lateral
subdivisions
entorhinal
cortex
(MEC
LEC),
respectively,
we
investigated
these
inputs
memory.
Whereas
MEC
are
dispensable,
direct
LEC
both
selectively
activated
during
exploration
required
This
selective
behavioral
role
reflected
stronger
excitatory
drive
it
provides
compared
with
MEC.
Thus,
→
circuit
tuned
convey
that
critical