bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: May 28, 2023
Abstract
Most
living
organisms
have
evolved
to
synchronize
their
biological
activities
with
the
earth’s
rotation,
a
daily
regulation
of
biology
and
behaviour
controlled
by
an
evolutionary
conserved
molecular
machinery
known
as
circadian
clock.
For
most
animals,
mechanisms
are
meant
maximize
exposure
positive
(
e.g.:
social
interactions,
mating,
feeding
–
generally
during
day)
minimize
peril
predation,
weather,
darkness
night
1
).
On
top
regulation,
some
behaviours
also
feature
second
layer
homeostatic
control
acting
fail-safe
ensure
important
not
ignored.
Sleep
is
one
these
behaviours:
largely
clock
for
its
baseline
appearance,
it
at
same
time
modulated
poorly
understood
regulator
ensuring
animals
obey
species-specific
amount
sleep
2
.
An
often
considered
main
evidence
core
function
beyond
trivial
(that
is:
keeping
us
out
trouble
limiting
our
energy
expenditure
danger
3,4
)
hypothesized
that
around
this
mysterious
basic
function.
Here
we
characterize
in
group
seven
species
Drosophila
genus
key
distances
representing
variety
ecological
niche
adaptations.
We
show
spontaneous
circadian-driven
aspects
among
all
but
unexpectedly,
not.
uncover
differences
behavioural,
cell-biological
neuro-pharmacological
suggest
that,
Drosophilids,
primarily
satisfy
role,
immobile
dangerous
hours
day.
The
functions
independently,
fashion,
conserved.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: June 14, 2024
Abstract
Living
organisms
synchronize
their
biological
activities
with
the
earth’s
rotation
through
circadian
clock,
a
molecular
mechanism
that
regulates
biology
and
behavior
daily.
This
synchronization
factually
maximizes
positive
(e.g.,
social
interactions,
feeding)
during
safe
periods,
minimizes
exposure
to
dangers
predation,
darkness)
typically
at
night.
Beyond
basic
regulation,
some
behaviors
like
sleep
have
an
additional
layer
of
homeostatic
control,
ensuring
those
essential
are
fulfilled.
While
is
predominantly
governed
by
secondary
regulator,
though
not
well-understood,
ensures
adherence
necessary
amounts
hints
fundamental
function
beyond
simple
energy
conservation
safety.
Here
we
explore
regulation
across
seven
Drosophila
species
diverse
ecological
niches,
revealing
while
circadian-driven
aspects
consistent,
varies
significantly.
The
findings
suggest
in
Drosophilids,
evolved
primarily
for
purposes.
more
complex,
homeostatically
regulated
functions
appear
independently
species-specific
manner,
universally
conserved.
laboratory
model
may
reproduce
recapitulate
primordial
evolution.
Neuroscience,
Journal Year:
2024,
Volume and Issue:
557, P. 12 - 23
Published: Aug. 11, 2024
Alzheimer's
disease
(AD)
is
the
most
prevalent
dementia,
pathologically
featuring
abnormal
accumulation
of
amyloid-β
(Aβ)
and
hyperphosphorylated
tau,
while
sleep,
divided
into
rapid
eye
movement
sleep
(REM)
nonrapid
(NREM),
plays
a
key
role
in
consolidating
social
spatial
memory.
Emerging
evidence
has
revealed
that
disorders
such
as
circadian
disturbances
disruption
neuronal
rhythm
activity
are
considered
both
candidate
risks
consequence
AD,
suggesting
bidirectional
relationship
between
AD.
This
review
will
firstly
grasp
basic
knowledge
AD
pathogenesis,
then
highlight
macrostructural
microstructural
alteration
along
with
progression,
explain
interaction
Aβ
which
two
critical
neuropathological
processes
well
neuroinflammation
finally
introduce
several
methods
enhancement
strategies
to
reduce
AD-associated
neuropathology.
Although
theories
about
relevant
therapeutic
mice
have
been
developed
recent
years,
human
still
limited.
More
studies
on
how
effectively
ameliorate
pathology
patients
by
what
specific
roles
play
needed.
Frontiers in Physiology,
Journal Year:
2020,
Volume and Issue:
11
Published: May 28, 2020
Humans
spend
nearly
a
third
of
their
life
sleeping,
yet,
despite
decades
research
the
function
sleep
still
remains
mystery.
Sleep
has
been
linked
with
various
biological
systems
and
functions,
including
metabolism,
immunity,
cardiovascular
system,
cognitive
functions.
Importantly,
appears
to
be
present
throughout
animal
kingdom
suggesting
that
it
must
provide
an
evolutionary
advantage.
Among
many
possible
functions
sleep,
relationship
between
cognition
received
lot
support.
We
have
all
experienced
negative
effects
associated
night
deprivation.
These
can
include
increased
emotional
reactivity,
poor
judgment,
deficit
in
attention,
impairment
learning
memory,
obviously
increase
daytime
sleepiness.
Furthermore,
neurological
diseases
like
Alzheimer's
disease
often
disorder
component.
In
some
cases,
exacerbate
progression
disease.
Thus,
is
clear
plays
important
role
for
brain
particular,
shown
play
positive
consolidation
long-term
memory
while
deprivation
negatively
impacts
memory.
behavior
adapted
individual's
need
influenced
by
external
internal
stimuli.
addition
being
adaptive
behavior,
also
modulate
plasticity
at
level
synaptic
connections
neurons
neuronal
influences
sleep.
Understanding
how
modulated
stimuli
key
question
neuroscience.
order
address
this
question,
several
models
developed.
them,
fruit
fly
Drosophila
melanogaster
its
unparalleled
genetics
proved
extremely
valuable.
excellent
model
study
complex
behaviors,
learning,
This
review
describes
our
current
knowledge
plasticity,
using
model.
Zebrafish,
Journal Year:
2023,
Volume and Issue:
20(2), P. 86 - 94
Published: April 1, 2023
Animal
model
systems
are
dependent
on
the
standardization
of
husbandry
protocols
that
maximize
growth
and
reduce
generation
time.
The
Mexican
tetra,
Astyanax
mexicanus,
exists
as
eyed
surface
blind
cave
dwelling
populations.
opportunity
for
comparative
approaches
between
independently
evolved
populations
has
led
to
rapid
A.
mexicanus
a
evolution
biomedical
research.
However,
slow
inconsistent
rate
remains
major
limitation
expanded
application
mexicanus.
Fortunately,
this
temporal
can
be
addressed
through
changes
accelerate
rates
while
maintaining
optimal
health
outcomes.
Here,
we
describe
protocol
produces
in
diet,
feeding
frequency,
sorting
progressive
tank
size.
This
produced
robust
decreased
age
sexual
maturity
comparison
our
previous
protocol.
To
determine
whether
impacted
behavior,
tested
fish
exploration
schooling
assays.
We
found
no
difference
behavior
two
groups,
suggesting
increased
will
not
impact
natural
variation
behavioral
traits.
Taken
together,
standardized
development
genetic
model.
Neuroscience & Biobehavioral Reviews,
Journal Year:
2023,
Volume and Issue:
156, P. 105504 - 105504
Published: Dec. 6, 2023
Animals
respond
to
changes
in
the
environment
which
affect
their
internal
state
by
adapting
behaviors.
Social
isolation
is
a
form
of
passive
environmental
stressor
that
alters
animal
behaviors
across
kingdom,
including
humans,
rodents,
and
fruit
flies.
known
increase
violence,
disrupt
sleep
depression
leading
poor
mental
physical
health.
Recent
evidence
from
several
model
organisms
suggests
social
leads
remodeling
transcriptional
epigenetic
landscape
behavioral
outcomes.
In
this
review,
we
explore
how
manipulating
experience
fly
Drosophila
melanogaster
can
shed
light
on
molecular
neuronal
mechanisms
underlying
driven
We
discuss
recent
advances
made
using
powerful
genetic
toolkit
assays
uncover
role
neuromodulators,
sensory
modalities,
pheromones,
circuits
mediating
isolation.
The
insights
gained
these
studies
could
be
crucial
for
developing
effective
therapeutic
interventions
future.