Light
pollution
is
a
significant
challenge
in
the
built
environment,
exerting
adverse
effects
on
human
health.
The
primary
source
of
negative
impacts
light
trespass,
where
extends
beyond
its
intended
target,
such
as
windows
buildings,
leading
to
annoyance,
disrupted
sleep
patterns,
and
diminished
quality
life
for
residents.
Although
shielded
directed
outdoor
lighting
can
mitigate
direct
addressing
trespass
caused
by
skyglow
more
complex
due
inability
be
shielded.
This
study
introduces
novel
analytical
approach
investigate
skyglow-induced
trespass.
By
employing
new
technique,
we
simulate
quantify
amount
within
specific
environment.
We
estimate
contribution
overall
indoor
vertical
illuminance,
considering
various
window
sizes
bed
positions
typical
dwelling.
Our
findings
reveal
that
factors
room
orientation,
bed-window
separation
distance,
depth
below
influence
diffuse
illuminance
interior.
Surprisingly,
maximum
not
necessarily
near
but
occurs
at
room.
non-trivial
interaction
between
solid
angle
brightness
sky
segments
see
from
different
Importantly,
our
demonstrates
optimizing
configuration
bedrooms
effectively
minimize
nightlight
Furthermore,
strength
this
effect
undergoes
changes
when
transitioning
urban
city
edge
suburban
areas.
The
intricate
relationship
between
cancer,
circadian
rhythms,
and
aging
is
increasingly
recognized
as
a
critical
factor
in
understanding
the
mechanisms
underlying
tumorigenesis
cancer
progression.
Aging
well-established
primary
risk
for
while
disruptions
rhythms
are
intricately
associated
with
progression
of
various
tumors.
Moreover,
itself
disrupts
leading
to
physiological
changes
that
may
accelerate
development.
Despite
these
connections,
specific
interplay
processes
their
collective
impact
on
remains
inadequately
explored
literature.
In
this
review,
we
systematically
explore
influence
We
discuss
how
core
genes
tumor
prognosis,
highlighting
shared
hallmarks
such
genomic
instability,
cellular
senescence,
chronic
inflammation.
Furthermore,
examine
aging,
focusing
crosstalk
contributes
tumorigenesis,
proliferation,
apoptosis,
well
metabolism
stability.
By
elucidating
common
pathways
linking
review
provides
new
insights
into
pathophysiology
identifies
potential
therapeutic
strategies.
propose
targeting
regulation
could
pave
way
novel
treatments,
including
chronotherapy
antiaging
interventions,
which
offer
important
benefits
clinical
management
cancer.
Philosophical Transactions of the Royal Society B Biological Sciences,
Journal Year:
2024,
Volume and Issue:
379(1898)
Published: Feb. 5, 2024
Biological
clocks
are
evolved
time-keeping
systems
by
which
organisms
rhythmically
coordinate
physiology
within
the
body,
and
align
it
with
rhythms
in
their
environment.
Clocks
highly
sensitive
to
light
at
interface
of
several
major
endocrine
pathways.
Worryingly,
exposure
artificial-light-at-night
(ALAN)
is
rapidly
increasing
ever
more
extensive
parts
world,
likely
impact
on
wild
mediated
endocrine-circadian
In
this
overview,
we
first
give
a
broad-brush
introduction
biological
rhythms.
Then,
outline
interactions
between
avian
clock,
pathways,
environmental
internal
modifiers.
The
main
focus
review
circadian
hormone,
melatonin.
We
summarize
information
from
field
laboratory
studies
melatonin
its
relationships
behaviour
physiology,
including
often
neglected
developmental
aspects.
When
exposed
ALAN,
birds
vulnerable
disruption
behavioural
physiological
under
rhythmic
control.
Several
suggest
that
key
mediator
for
broad
range
effects.
encourage
further
observational
experimental
ALAN
melatonin,
across
full
functional
versatile
signalling
molecule,
as
well
other
candidate
compounds
interface.
This
article
part
theme
issue
'Endocrine
responses
variation:
conceptual
approaches
recent
developments'.
FEBS Journal,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 22, 2025
Modern
habits
are
becoming
more
and
disruptive
to
health.
As
our
days
often
filled
with
circadian
disruption
stress
exposures,
we
need
understand
how
responses
these
external
stimuli
shaped
their
mediators
can
be
targeted
promote
A
growing
body
of
research
demonstrates
the
role
gut
microbiota
in
influencing
brain
function
behavior.
The
response
rhythms,
which
essential
maintaining
appropriate
environment,
known
impacted
by
microbiota.
Gut
microbes
have
been
shown
alter
host's
modulate
rhythmicity.
Although
studies
demonstrated
strong
links
between
microbiota,
rhythms
response,
such
were
conducted
an
independent
manner
not
conducive
understanding
interface
factors.
Due
interconnected
nature
this
review
explore
may
play
a
regulating
integration
signals
mammals
consequences
for
health
disease.
Ecotoxicology and Environmental Safety,
Journal Year:
2024,
Volume and Issue:
281, P. 116590 - 116590
Published: June 20, 2024
Exposure
to
light
at
night
(LAN)
has
been
associated
with
multiple
adverse
health
outcomes.
However,
evidence
is
limited
regarding
the
impacts
of
LAN
exposure
on
human
inflammation.
To
examine
association
between
real-ambient
bedroom
systemic
inflammation
and
circadian
rhythm
inflammatory
markers.
Using
data
from
a
prospective
cohort
study
Chinese
young
adults.
At
baseline,
was
measured
portable
illuminance
meter;
fasting
blood
sample
for
high-sensitivity
C-reactive
protein
(hs-CRP)
assay
collected.
3-year
follow-up,
20
healthy
adults
(10
LANavg
<
5
lx,
10
≥
lx)
were
recruited
same
cohort;
time-series
venous
samples
sampled
every
4
h
over
24
h-cycle
detection
8
Circadian
markers
assessed
using
cosinor
analysis.
average
age
276
participants
18.7
years,
33.3
%
male.
Higher
levels
significantly
increased
hs-CRP
levels.
The
only
significant
in
inactive
group
(MVPA
2
h/d)
but
not
physically
active
h/d).
In
addition,
higher
nighttime
(LANavg
disrupted
rhythms
(including
rhythmic
expression,
amplitude
phase)
some
cytokines
balance
indicators.
increases
disrupts
Keep
darkness
may
represent
important
strategies
prevention
chronic
Additionally,
people
living
community
pollution,
regular
physical
activity
be
viable
option
counteract
negative
Ecotoxicology and Environmental Safety,
Journal Year:
2025,
Volume and Issue:
289, P. 117636 - 117636
Published: Jan. 1, 2025
Obesity
is
a
contributing
factor
that
increases
the
likelihood
of
developing
chronic
kidney
disease.
In
recent
years,
studies
have
found
light
pollution
worldwide
promoted
obesity,
which
was
known
to
be
consequence
circadian
rhythm
disruption.
Nevertheless,
impact
on
disease
associated
with
obesity
remains
mostly
unknown,
and
potential
processes
been
minimally
investigated.
Herein,
we
fed
mice
high-fat
diet
gave
them
dim
white
(dWL),
blue
(dBL),
green
(dGL),
red
(dRL)
for
12
weeks.
Our
results
showed
both
dWL
dBL
tended
more
susceptible
damage
dysfunction
caused
by
compared
LD,
pronounced
changes
in
dBL.
The
analysis
activated
TGF-β1/Smad
signaling
pathway
promote
epithelial-mesenchymal
transition
(EMT)
kidney.
Additionally,
NF-κB
resulted
elevated
protein
levels
TLR4,
p-IκB,
p-P65,
TNF-α.
Furthermore,
increased
BAX
decreased
BCL2
levels.
At
same
time,
affected
Keap1/Nrf2/HO-1
pathway,
elevating
KEAP1
decreasing
NRF2
HO-1
We
were
surprised
find
altered
expression
clock
genes,
resulting
decrease
positively
regulated
genes
Bmal1,
Clock,
an
increase
negatively
Per1,
Per2,
Per3.
Mechanistically,
plasma
CORT
as
well
renal
GR
α
expression,
vitro
experiments
addition
returned
normal
after
inhibitor
RU486.
Consequently,
can
exacerbate
injury
altering
rhythmic
acting
biological
via
GR.
Deleted Journal,
Journal Year:
2025,
Volume and Issue:
2(1)
Published: March 8, 2025
Abstract
Circadian
clocks
are
internal
timekeepers
enabling
organisms
to
adapt
recurrent
events
in
their
environment
–
such
as
the
succession
of
day
and
night—by
controlling
essential
behaviors
food
intake
or
sleep-wake
cycle.
A
ubiquitous
cellular
clock
network
regulates
numerous
physiological
processes
including
endocrine
system.
Levels
several
hormones
melatonin,
cortisol,
sex
hormones,
thyroid
stimulating
hormone
well
a
number
metabolic
factors
vary
across
day,
some
them,
turn,
can
feedback
on
circadian
rhythms.
In
this
review,
we
dissect
principal
ways
by
which
regulate
rhythms
target
tissues
phasic
drivers
rhythms,
zeitgebers
resetting
tissue
phase,
tuners,
affecting
downstream
more
tonic
fashion
without
core
clock.
These
data
emphasize
intricate
interaction
system
offer
inroads
into
tissue-specific
manipulation
organization.
The Science of The Total Environment,
Journal Year:
2025,
Volume and Issue:
975, P. 179251 - 179251
Published: April 3, 2025
Melatonin
is
important
for
synchronizing
biological
rhythms
and
regulating
behavioral,
physiological,
neurobiological
circadian
processes.
Therefore,
it
a
good
candidate
investigating
the
consequences
of
artificial
light
at
night
(ALAN),
which
major
global
pollutant
reduces
nighttime
melatonin
levels.
The
negative
effects
ALAN
on
health
biodiversity
are
thoroughly
studied,
however
less
known
about
its
adult
brain
plasticity
(ABP).
This
study
investigated
role
in
mediating
ABP
behavior
zebra
finches
(Taeniopygia
guttata).
Birds
were
exposed
to
control
(dark
nights)
or
(5
lx)
conditions
treated
with
via
skin
cream.
We
measured
locomotor
activity
(NMA),
plasma
levels,
parameters:
cell
proliferation
ventricular
zone,
neuronal
recruitment,
apoptosis,
total
densities
three
forebrain
regions:
nidopallium
caudale
(NC),
medial
striatum
(MSt),
hippocampus
(HC).
alone
reduced
melatonin,
increased
NMA,
proliferation,
apoptosis
MSt
NC
but
not
HC,
appeared
more
resilient.
However,
when
treatments
combined
ALAN,
generally
counteracted
NMA
ABP,
except
remained
resilient
even
under
treatments.
Our
findings
suggest
that
can
counteract
ALAN-induced
changes
behavior.
Further
research
(e.g.
wild
species
lifelong
ALAN-exposed
birds)
needed
evaluate
these
results
an
ecological
context,
be
used
nature
conservation
efforts.