Zhurnal «Patologicheskaia fiziologiia i eksperimental`naia terapiia»,
Journal Year:
2023,
Volume and Issue:
67(3), P. 21 - 28
Published: Oct. 11, 2023
Введение.
Высокая
степень
личностных
тревожных
расстройств
выявляется
у
96%
пожилых
и
100%
людей
старческого
возраста,
а
50%
56%
лиц
старше
75
лет
наблюдается
повышение
реактивной
тревожности.
Несмотря
на
наличие
большого
арсенала
фармакологических
средств
для
лечения
расстройств,
перспективным
остается
разработка
лекарственных
препаратов
основе
антител
их
фрагментов,
благодаря
таким
свойствам,
как
специфичность,
метаболическая
активность.
Ранее
в
опытах
мышах
BALB/C
было
показано
снижение
уровня
тревожности
при
однократном
внутрибрюшинном
введении
к
глутамату.
В
стареющих
экспериментальных
моделях
болезни
Альцгеймера,
показан
антиамнестический
эффект
интраназальном
аффинно-очищенных
поликлональных
Цель
исследования
–
изучение
влияния
интраназального
введения
глутамату
F(ab´)2
фрагментов
уровень
мышей
C57Bl/6.
Методика.
Исследование
выполнено
линии
C57Bl/6
возрасте
12
мес.
Мыши
были
разделены
три
группы:
две
опытные
группы
получали
интраназально
растворенные
физиологическом
растворе
поликлональные
моноспецифические
антитела
(АТ-
ГЛУ)
фрагменты
АТ-
ГЛУ
соответственно
дозе
250
мкг/кг
объеме
4
мкл
ежедневно
течение
3
дней.
контрольной
физиологический
раствор
том
же
объеме.
Оценивали
поведенческую
активность
тесте
«Открытое
поле»
условиях
теста
«приподнятый
крестообразный
лабиринт».
Результаты.
Интраназальное
введение
стареющим
мышам
АТ-ГЛУ
приводило
значимому
увеличению
количества
посещений
времени
пребывания
центре
поля,
снижению
углах
стоек
открытого
поля
сравнении
с
животными
контроля.
Анализ
результатов
тестирования
приподнятом
крестообразном
лабиринте
показал,
что
мыши,
получавшие
АТ-ГЛУ,
существенно
увеличивали
время,
проведенное
открытых
рукавах
лабиринта,
также
число
реакций
«свешивания»
(заглядывание
под
лабиринт)
по
сравнению
мышами
группы,
свидетельствует
о
снижении
страха.
Заключение.
Полученные
данные
свидетельствуют
страха
C57Bl/6,
получавших
Introduction.
Anxiety
disorder
occurs
in
approximately
15-25%
of
the
adult
population.
A
high
degree
anxious
personality
disorders
was
found
old
people
and
very
people,
whereas
older
than
had
increased
reactive
anxiety.
In
persistent
anxiety,
production
β-amyloid
increases
contributes
to
development
neurodegenerative
diseases
age.
Despite
availability
a
large
arsenal
pharmacological
agents
for
treatment
anxiety
disorders,
drugs
based
on
antibodies
their
fragments
is
promising
due
specificity,
activity,
metabolic
activity.
Previous
experiments
mice
showed
decrease
level
after
single
intraperitoneal
injection
glutamate
antibodies.
Experiments
aging
experimental
models
Alzheimer’s
disease
demonstrated
an
anti-amnesic
effect
affinity-purified
polyclonal
administered
intranasally.
The
aim
study
evaluate
intranasal
mice.
Methods.
performed
12-month-old
Mice
were
divided
into
three
groups:
two
groups
received
monospecific
(AT-
GLU)
AT-
GLU.
dissolved
saline
intranasally
at
dose
µg/kg
volume
µl,
daily
days.
control
group
same
volume.
behavioral
activity
assessed
by
open
field
test
elevated
plus
maze
test.
Results.
Intranasal
administration
GLU
AT-GLU
resulted
significant
increase
number
visits
time
spent
center
field,
corners,
rears
corners
compared
group.
that
treated
with
significantly
arms
maze,
as
well
unprotected
head
dips
group,
which
indicated
fear.
Conclusion.
results
possible
fear
antibodies,
suggested
anxiolytic
fragments.
Clinical Nutrition,
Journal Year:
2024,
Volume and Issue:
43(10), P. 2236 - 2248
Published: Aug. 18, 2024
Unhealthy
lifestyles,
such
as
chronic
consumption
of
a
Western
Diet
(WD),
have
been
associated
with
increased
systemic
inflammation
and
oxidative
stress
(OS),
condition
that
may
favour
cognitive
dysfunctions
during
aging.
Polyphenols,
rosmarinic
acid
(RA)
buffer
low-grade
OS,
characterizing
the
aging
brain
is
sustained
by
WD,
promoting
healthspan.
The
aim
this
study
was
to
evaluate
ability
RA
prevent
decline
in
mouse
model
WD-driven
unhealthy
gain
knowledge
on
specific
molecular
pathways
modulated
within
brain.
International Journal of Molecular Sciences,
Journal Year:
2023,
Volume and Issue:
24(24), P. 17377 - 17377
Published: Dec. 12, 2023
Research
into
Alzheimer's
Disease
(AD)
describes
a
link
between
AD
and
the
resident
immune
cells
of
brain,
microglia.
Further,
this
suspected
is
thought
to
have
underlying
sex
effects,
although
mechanisms
these
effects
are
only
just
beginning
be
understood.
Many
insights
result
policies
put
in
place
by
funding
agencies
such
as
National
Institutes
Health
(NIH)
consider
biological
variable
(SABV)
move
towards
precision
medicine
due
continued
lackluster
therapeutic
options.
The
purpose
review
provide
an
updated
assessment
current
research
that
summarizes
differences
pertaining
microglia
their
varied
responses
AD.
Frontiers in Aging Neuroscience,
Journal Year:
2024,
Volume and Issue:
16
Published: March 8, 2024
Introduction
The
differential
expression
of
emotional
reactivity
from
early
to
late
adulthood
may
involve
maturation
prefrontal
cortical
responses
negative
valence
stimuli.
In
mice,
age-related
changes
in
affective
behaviors
have
been
reported,
but
the
functional
neural
circuitry
warrants
further
investigation.
Methods
We
assessed
age
variations
and
connectivity
male
female
C57BL6/J
mice.
Mice
aged
10,
30
60
weeks
(wo)
were
tested
over
8
for
open
field
activity,
sucrose
preference,
social
interactions,
fear
conditioning,
neuroimaging.
Prefrontal
hippocampal
tissues
excised
metabolomics.
Results
Our
results
indicate
that
young
old
mice
differ
significantly
behavioral,
connectome
cortical-hippocampal
metabolome.
Young
show
a
greater
responsivity
novel
environmental
stimuli
compared
older
Conversely,
middle-aged
(60wo
group)
display
variable
patterns
conditioning
during
re-testing
modified
context.
Functional
between
temporal
cortical/auditory
cortex
network
subregions
anterior
cingulate
ventral
hippocampus,
modularity
assortative
mixing
nodes
was
stronger
versus
adult
Metabolome
analyses
identified
differences
several
essential
amino
acids
10wo
other
groups.
Discussion
support
‘emotionality’
across
distinct
stages
mouse
lifespan
involving
prefrontal-hippocampal
neurochemistry.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: April 28, 2023
Abstract
The
medial
prefrontal
cortex
(mPFC)
is
critical
to
cognitive
and
emotional
function
underlies
many
neuropsychiatric
disorders,
including
mood,
fear
anxiety
disorders.
In
rodents,
disruption
of
mPFC
activity
affects
anxiety-
depression-like
behavior,
with
specialized
contributions
from
its
subdivisions.
rodent
divided
into
the
dorsomedial
(dmPFC),
spanning
anterior
cingulate
(ACC)
dorsal
prelimbic
(PL),
ventromedial
(vmPFC),
which
includes
ventral
PL,
infralimbic
(IL),
in
some
studies
peduncular
(DP)
tenia
tecta
(DTT).
DP/DTT
have
recently
been
implicated
regulation
stress-
induced
sympathetic
responses
via
projections
hypothalamus.
While
implicate
PL
IL
anxiety-,
contribution
affective
behavior
remains
unknown.
Here,
we
used
chemogenetics
optogenetics
bidirectionally
modulate
examine
effects
on
behaviors,
stress
C57BL/6J
mice.
Acute
chemogenetic
activation
significantly
increased
anxiety-like
open
field
elevated
plus
maze
tests,
as
well
passive
coping
tail
suspension
test.
also
led
an
increase
serum
corticosterone
levels
facilitated
auditory
extinction
learning
retrieval.
Activation
hypothalamus
(DMH)
acutely
decreased
freezing
at
baseline
during
learning,
but
did
not
alter
behavior.
These
findings
point
a
new
regulator