Frontiers in Immunology,
Journal Year:
2021,
Volume and Issue:
12
Published: Feb. 5, 2021
The
Severe
Acute
Respiratory
Syndrome
Coronavirus
2
(SARS-CoV-2)
is
a
fast
spreading
virus
leading
to
the
development
of
Disease-2019
(COVID-19).
and
critical
cases
are
characterized
by
damage
respiratory
system,
endothelial
inflammation,
multiple
organ
failure
triggered
an
excessive
production
proinflammatory
cytokines,
culminating
in
high
number
deaths
all
over
world.
Sedentarism
induces
worse,
continuous,
progressive
consequences
health.
On
other
hand,
physical
activity
provides
benefits
health
improves
low-grade
systemic
inflammation.
aim
this
review
elucidate
effects
fitness,
immune
defense,
its
contribution
mitigate
severe
inflammatory
response
mediated
SARS-CoV-2.
Physical
exercise
effective
therapeutic
strategy
SARS-CoV-2
infection.
In
sense,
studies
have
shown
that
acute
myokines
secreted
tissues
into
bloodstream,
supporting
modulatory
effect.
Therefore,
maintaining
influence
balance
system
increases
vigilance,
also
might
promote
potent
against
infectious
diseases
chronic
associated
with
forms
COVID-19.
Protocols
maintain
practice
suggested
been
strongly
established,
such
as
home-based
(HBE)
outdoor-based
(OBE).
regard,
HBE
help
reduce
levels
inactivity,
bed
rest,
sitting
time,
impacting
on
adherence
activity,
promoting
related
exercise,
attracting
patients
different
stages
treatment
for
parallel,
OBE
must
improve
health,
but
prevent
COVID-19
outcomes
populations.
conclusion,
or
models
can
be
progress
infection,
coadjutant
therapy
at
ages
conditions.
Frontiers in Immunology,
Journal Year:
2021,
Volume and Issue:
12
Published: Sept. 30, 2021
Reactive
oxygen
species
(ROS)
are
fundamental
for
macrophages
to
eliminate
invasive
microorganisms.
However,
as
observed
in
nonphagocytic
cells,
ROS
play
essential
roles
processes
that
different
from
pathogen
killing,
signal
transduction,
differentiation,
and
gene
expression.
The
outcomes
of
these
events
likely
depend
on
the
specific
subcellular
site
formation,
well
duration
extent
production.
While
excessive
accumulation
has
long
been
appreciated
its
detrimental
effects,
there
is
now
a
deeper
understanding
their
signaling
molecules.
This
could
explain
failure
"all
or
none"
pharmacologic
approach
with
global
antioxidants
treat
several
diseases.
NADPH
oxidase
first
source
identified
macrophages.
growing
evidence
highlights
mitochondria
crucial
formation
mainly
due
electron
leakage
respiratory
chain
enzymes,
such
monoamine
oxidases.
Their
role
redox
signaling,
together
exact
only
partially
elucidated.
Hence,
it
identify
intracellular
sources
how
they
influence
cellular
both
physiological
pathological
conditions
develop
therapies
targeting
oxidative
networks.
In
this
review,
we
will
focus
sites
impact
metabolic
inflammatory
highlighting
mitochondrial
compared
non-mitochondrial
sources.
PLoS Pathogens,
Journal Year:
2020,
Volume and Issue:
16(12), P. e1009127 - e1009127
Published: Dec. 16, 2020
Viruses
are
obligate
intracellular
parasites
that
make
use
of
the
host
metabolic
machineries
to
meet
their
biosynthetic
needs.
Thus,
identifying
pathways
essential
for
virus
replication
may
lead
potential
targets
therapeutic
intervention.
The
mechanisms
and
explored
by
SARS-CoV-2
support
its
within
cells
not
fully
known.
Lipid
droplets
(LD)
organelles
with
major
functions
in
lipid
metabolism,
energy
homeostasis
transport,
have
multiple
roles
infections
inflammation.
Here
we
described
monocytes
from
COVID-19
patients
an
increased
LD
accumulation
compared
negative
donors.
In
vitro
,
infection
were
seen
modulate
synthesis
uptake
as
monitored
testing
CD36,
SREBP-1,
PPARγ,
DGAT-1
expression
triggered
formation
different
human
cell
lines.
LDs
found
close
apposition
proteins
double-stranded
(ds)-RNA
infected
Vero
cells.
Electron
microscopy
(EM)
analysis
show
viral
particles
colocalizing
LDs,
suggestive
might
serve
assembly
platform.
Pharmacological
modulation
inhibition
A922500
significantly
inhibited
well
reduced
production
mediators
pro-inflammatory
response.
Taken
together,
demonstrate
role
reprograming
pathogenesis,
opening
new
opportunities
strategies
COVID-19.
Biochemistry (Moscow),
Journal Year:
2020,
Volume and Issue:
85(12-13), P. 1543 - 1553
Published: Dec. 1, 2020
Pathogenesis
of
the
novel
coronavirus
infection
COVID-19
is
subject
active
research
around
world.
caused
by
SARS-CoV-2
a
complex
disease
in
which
interaction
virus
with
target
cells,
action
immune
system
and
body's
systemic
response
to
these
events
are
closely
intertwined.
Many
respiratory
viral
infections,
including
COVID-19,
cause
death
infected
activation
innate
response,
secretion
inflammatory
cytokines.
All
processes
associated
development
oxidative
stress,
makes
an
important
contribution
pathogenesis
infections.
This
review
analyzes
information
on
stress
infections
other
viruses.
The
also
focuses
involvement
vascular
endothelium
pathogenesis.
Signal Transduction and Targeted Therapy,
Journal Year:
2022,
Volume and Issue:
7(1)
Published: July 7, 2022
Abstract
Molecular
oxygen
(O
2
)
is
essential
for
most
biological
reactions
in
mammalian
cells.
When
the
intracellular
content
decreases,
it
called
hypoxia.
The
process
of
hypoxia
linked
to
several
processes,
including
pathogenic
microbe
infection,
metabolic
adaptation,
cancer,
acute
and
chronic
diseases,
other
stress
responses.
mechanism
underlying
cells
respond
changes
mediate
subsequent
signal
response
central
question
during
Hypoxia-inducible
factors
(HIFs)
sense
regulate
expressions
a
series
downstream
genes
expression,
which
participate
multiple
processes
cell
metabolism,
growth/death,
proliferation,
glycolysis,
immune
response,
tumorigenesis,
metastasis.
Importantly,
signaling
also
interacts
with
cellular
pathways,
such
as
phosphoinositide
3-kinase
(PI3K)-mammalian
target
rapamycin
(mTOR)
signaling,
nuclear
factor
kappa-B
(NF-κB)
pathway,
extracellular
signal-regulated
kinases
(ERK)
endoplasmic
reticulum
(ER)
stress.
This
paper
systematically
reviews
mechanisms
activation,
control
HIF
function
human
health
diseases.
In
addition,
therapeutic
targets
involved
balance
diseases
are
summarized
highlighted,
would
provide
novel
strategies
design
development
drugs.
Frontiers in Immunology,
Journal Year:
2021,
Volume and Issue:
12
Published: July 21, 2021
COVID-19
is
a
contagious
viral
disease
caused
by
SARS-CoV-2
that
led
to
an
ongoing
pandemic
with
massive
global
health
and
socioeconomic
consequences.
The
characterized
primarily,
but
not
exclusively,
respiratory
clinical
manifestations
ranging
from
mild
common
cold
symptoms,
including
cough
fever,
severe
distress
multi-organ
failure.
Macrophages,
heterogeneous
group
of
yolk-sac
derived,
tissue-resident
mononuclear
phagocytes
complex
ontogeny
present
in
all
mammalian
organs,
play
critical
roles
developmental,
homeostatic
host
defense
processes
tissue-dependent
plasticity.
In
case
infection,
they
are
responsible
for
early
pathogen
recognition,
initiation
resolution
inflammation,
as
well
repair
tissue
damage.
Monocytes,
bone-marrow
derived
blood-resident
phagocytes,
recruited
under
pathological
conditions
such
infections
the
affected
defend
organism
against
invading
pathogens
aid
efficient
inflammation.
Given
their
pivotal
function
potential
danger
posed
dysregulated
hyperinflammation,
understanding
monocyte
macrophage
phenotypes
key
tackling
disease's
mechanisms.
Here,
we
outline
current
knowledge
on
monocytes
macrophages
homeostasis
summarize
concepts
findings
role
COVID-19.
While
blood
patients
moderate
inflammatory,
interferon-stimulated
gene
(ISG)-driven
phenotype,
cellular
dysfunction
epitomized
loss
HLA-DR
expression
induction
S100
alarmin
dominant
feature
disease.
Pulmonary
infiltrating
inflammatory
hyperactivated
state
resulting
detrimental
loop
pro-inflammatory
cytokine
release
recruitment
cytotoxic
effector
cells
thereby
exacerbating
damage
at
site
infection.