Medicina,
Journal Year:
2025,
Volume and Issue:
61(5), P. 773 - 773
Published: April 22, 2025
Although
the
acute
phase
of
COVID-19
pandemic
has
subsided,
emergence
post-COVID-19
condition
presents
a
new
and
complex
public
health
challenge,
characterized
by
persistent,
multisystem
symptoms
that
can
endure
for
weeks
or
months
after
initial
infection
with
SARS-CoV-2
virus,
significantly
affecting
survivors’
quality
life.
Among
most
concerning
sequelae
are
cardiovascular
complications,
which
encompass
broad
spectrum
conditions,
including
arrhythmias,
myocardial
damage,
postural
orthostatic
tachycardia
syndrome.
This
narrative
review
explores
burden
on
reviewing
latest
relevant
findings
in
literature
highlighting
different
aspects
COVID-19’s
involvement.
investigates
pathophysiological
mechanisms
underlying
involvement
condition,
focus
direct
viral
invasion
via
ACE2
receptors,
immune-mediated
injury,
cytokine
storm,
systemic
inflammation,
endothelial
dysfunction,
mitochondrial
injury.
The
interplay
between
pre-existing
diseases,
such
as
hypertension,
atherosclerosis,
diabetes,
atrial
fibrillation,
is
also
explored,
revealing
individuals
conditions
at
heightened
risk
both
severe
illness
long-term
complications.
Long-term
immune
activation
persistence
antigens
increasingly
recognized
contributors
to
ongoing
even
mild
asymptomatic
infections.
As
healthcare
system
continues
adapt
consequences
pandemic,
deeper
understanding
these
manifestations
essential.
knowledge
will
inform
development
targeted
strategies
prevention,
clinical
management,
rehabilitation
affected
patients.
Furthermore,
insights
gained
from
intersection
be
instrumental
shaping
responses
future
epidemics,
necessity
multidisciplinary
approaches
patient
care
preparedness.
Frontiers in Immunology,
Journal Year:
2024,
Volume and Issue:
15
Published: Feb. 28, 2024
The
COVID-19
pandemic
continues
to
cause
severe
global
disruption,
resulting
in
significant
excess
mortality,
overwhelming
healthcare
systems,
and
imposing
substantial
social
economic
burdens
on
nations.
While
most
of
the
attention
therapeutic
efforts
have
concentrated
acute
phase
disease,
a
notable
proportion
survivors
experience
persistent
symptoms
post-infection
clearance.
This
diverse
set
symptoms,
loosely
categorized
as
long
COVID,
presents
potential
additional
public
health
crisis.
It
is
estimated
that
1
5
exhibit
clinical
manifestations
consistent
with
COVID.
Despite
this
prevalence,
mechanisms
pathophysiology
COVID
remain
poorly
understood.
Alarmingly,
evidence
suggests
cases
within
condition
develop
debilitating
or
disabling
symptoms.
Hence,
urgent
priority
should
be
given
further
studies
equip
systems
for
its
management.
review
provides
an
overview
available
information
emerging
condition,
focusing
affected
individuals’
epidemiology,
pathophysiological
mechanisms,
immunological
inflammatory
profiles.
Angiogenesis,
Journal Year:
2023,
Volume and Issue:
26(4), P. 547 - 563
Published: July 28, 2023
Post-COVID-19
syndrome
(PCS)
is
a
lingering
disease
with
ongoing
symptoms
such
as
fatigue
and
cognitive
impairment
resulting
in
high
impact
on
the
daily
life
of
patients.
Understanding
pathophysiology
PCS
public
health
priority,
it
still
poses
diagnostic
treatment
challenge
for
physicians.In
this
prospective
observational
cohort
study,
we
analyzed
retinal
microcirculation
using
Retinal
Vessel
Analysis
(RVA)
patients
compared
to
an
age-
gender-matched
healthy
(n
=
41,
matched
out
n
204).PCS
exhibit
persistent
endothelial
dysfunction
(ED),
indicated
by
significantly
lower
venular
flicker-induced
dilation
(vFID;
3.42%
±
1.77%
vs.
4.64%
2.59%;
p
0.02),
narrower
central
artery
equivalent
(CRAE;
178.1
[167.5-190.2]
189.1
[179.4-197.2],
0.01)
arteriolar-venular
ratio
(AVR;
(0.84
[0.8-0.9]
0.88
[0.8-0.9],
0.007).
When
combining
AVR
vFID,
predicted
scores
reached
good
ability
discriminate
groups
(area
under
curve:
0.75).
Higher
severity
correlated
(R
-
0.37
0.017).
The
association
microvascular
changes
were
amplified
exhibiting
higher
levels
inflammatory
parameters.Our
results
demonstrate
that
prolonged
hallmark
PCS,
impairments
seem
explain
As
potential
therapies
emerge,
RVA
parameters
may
become
relevant
clinical
biomarkers
diagnosis
therapy
management.This
study
was
previously
registered
at
ClinicalTrials
("All
Eyes
PCS-Analysis
Microvasculature
Patients
Syndrome".
NCT05635552.
https://clinicaltrials.gov/ct2/show/NCT05635552
).
Persistent
post-COVID-19
syndrome.
Acute
SARS-CoV-2
infection
indirectly
or
directly
causes
endotheliitis
N
41
recruited
vessel
analysis
performed
assess
function.
Images
SVA
DVA
are
illustrative
data
analysis.
For
each
patient
cohort,
diameter
three
measurement
cycles
calculated
plotted
diameter-time
curve.
exhibited
reduced
veins
(vFID)
measured
dynamic
(DVA)
arteriolar
(CRAE)
(AVR)
tendency
towards
(CRVE)
when
naïve
participants.
Created
BioRender.com.
Frontiers in Physiology,
Journal Year:
2023,
Volume and Issue:
14
Published: July 24, 2023
Long
COVID-19
is
a
condition
characterized
by
persistent
symptoms
lasting
beyond
the
acute
phase
of
COVID-19.
produces
diverse
symptomatology
and
can
impact
organs
systems,
including
hematological
system.
Several
studies
have
reported,
in
patients,
abnormalities.
Most
these
alterations
are
associated
with
higher
risk
severe
disease
poor
outcomes.
This
literature
review
identified
reporting
parameters
individuals
Findings
suggest
that
range
sustained
alterations,
red
blood
cells,
anemia,
lymphopenia,
elevated
levels
inflammatory
markers
such
as
ferritin,
D-dimer,
IL-6.
These
may
contribute
to
better
understanding
pathophysiology
its
symptoms.
However,
further
research
needed
elucidate
underlying
mechanisms
potential
treatments
for
changes
Brain Communications,
Journal Year:
2024,
Volume and Issue:
6(2)
Published: Jan. 1, 2024
Abstract
Components
that
comprise
our
brain
parenchymal
and
cerebrovascular
structures
provide
a
homeostatic
environment
for
proper
neuronal
function
to
ensure
normal
cognition.
Cerebral
insults
(e.g.
ischaemia,
microbleeds
infection)
alter
cellular
physiologic
processes
within
the
neurovascular
unit
contribute
cognitive
dysfunction.
COVID-19
has
posed
significant
complications
during
acute
convalescent
stages
in
multiple
organ
systems,
including
brain.
Cognitive
impairment
is
prevalent
complication
patients,
irrespective
of
severity
SARS-CoV-2
infection.
Moreover,
overwhelming
evidence
from
vitro,
preclinical
clinical
studies
reported
SARS-CoV-2-induced
pathologies
components
are
associated
with
impairment.
Neurovascular
disruption
alters
coupling
response,
critical
mechanism
regulates
cerebromicrovascular
blood
flow
meet
energetic
demands
locally
active
neurons.
Normal
processing
achieved
through
response
involves
coordinated
action
cells
(i.e.
neurons
glia)
cell
types
endothelia,
smooth
muscle
pericytes).
However,
current
work
on
COVID-19-induced
yet
investigate
as
causal
factor.
Hence,
this
review,
we
aim
describe
SARS-CoV-2's
effects
how
they
can
impact
decline
disease.
Additionally,
explore
potential
therapeutic
interventions
mitigate
Given
great
both
individuals
public
health,
necessity
effort
fundamental
scientific
research
application
becomes
imperative.
This
integrated
endeavour
crucial
mitigating
deficits
induced
by
its
subsequent
burden
especially
vulnerable
population.
BMJ Open,
Journal Year:
2025,
Volume and Issue:
15(1), P. e086646 - e086646
Published: Jan. 1, 2025
Background
COVID-19
disease
results
in
disparate
responses
between
individuals
and
has
led
to
the
emergence
of
long
coronavirus
(Long-COVID),
characterised
by
persistent
cyclical
symptomology.
To
understand
complexity
Long-COVID,
importance
symptom
surveillance
prospective
longitudinal
studies
is
evident.
Methods
A
9-month
cohort
study
was
conducted
within
Scotland
(n=287),
using
a
mobile
app
determine
proportion
recovered
those
with
symptoms
common
symptoms,
associations
gender
age.
Results
3.1%
participants
experienced
at
month
9,
meeting
criteria
for
as
defined
National
Institute
Health
Care
Excellence
terminology.
The
random
effects
model
revealed
significant
time
(month)
effect
infection
recovery
(p<0.001,
estimate=0.07).
Fatigue,
cough
muscle
pain
were
most
baseline,
fatigue
persisting
longest,
while
like
improved
rapidly.
Older
age
increased
likelihood
reporting
(p=0.028,
estimate=0.07)
cognitive
impairment
estimate=0.93).
Female
headaches
(p=0.024,
estimate=0.53)
post-exertional
malaise
(PEM)
frequency
(p=0.05,
estimate=137.68),
x
PEM
(p=0.033,
estimate=18.96).
Conclusions
majority
people
fully
recover
from
acute
COVID-19,
although
often
slowly.
Age
play
role
burden
rates,
emphasising
need
tailored
approaches
Long-COVID
management.
Further
analysis
required
characteristics
still
ongoing
months
after
initial
identify
risk
factors
potential
predictors
development
Long-COVID.
International Journal of Molecular Sciences,
Journal Year:
2024,
Volume and Issue:
25(12), P. 6389 - 6389
Published: June 9, 2024
Long
COVID
(LC),
also
referred
to
as
Post
COVID-19
Condition,
Post-Acute
Sequelae
of
SARS-CoV-2
Infection
(PASC),
and
other
terms,
represents
a
complex
multisystem
disease
persisting
after
the
acute
phase
COVID-19.
Characterized
by
myriad
symptoms
across
different
organ
systems,
LC
presents
significant
diagnostic
management
challenges.
Central
disorder
is
role
low-grade
inflammation,
non-classical
inflammatory
response
that
contributes
chronicity
diversity
observed.
This
review
explores
pathophysiological
underpinnings
LC,
emphasizing
importance
inflammation
core
component.
By
delineating
pathogenetic
relationships
clinical
manifestations
this
article
highlights
necessity
for
an
integrated
approach
employs
both
personalized
medicine
standardized
protocols
aimed
at
mitigating
long-term
consequences.
The
insights
gained
not
only
enhance
our
understanding
but
inform
development
therapeutic
strategies
could
be
applicable
chronic
conditions
with
similar
features.
Cardiovascular Research,
Journal Year:
2023,
Volume and Issue:
120(1), P. 34 - 43
Published: Dec. 29, 2023
Clinical
evidence
reveals
that
manifestations
of
endothelial
dysfunction
are
widely
observed
in
COVID-19
and
long-COVID
patients.
However,
whether
these
detrimental
effects
caused
by
direct
infection
the
endothelium
or
indirectly
mediated
systemic
inflammation
has
been
a
matter
debate.
It
well
acknowledged
cells
(ECs)
cardiovascular
system
ubiquitously
express
SARS-CoV-2
entry
receptor
angiotensin-converting
enzyme
2
(ACE2),
yet
accumulating
suggests
it
is
more
predominantly
expressed
pericytes
vascular
smooth
muscle
mammalian
blood
vessel.
Besides,
replicative
ECs
to
be
demonstrated
both
vitro
vivo.
In
this
study,
we
review
latest
research
on
ACE2
expression
different
beds,
heterogeneity
various
EC
subsets
with
differential
response
SARS-CoV-2.
We
also
discuss
ACE2-independent
alternative
mechanisms
underlying
activation
COVID-19,
clinical
SARS-CoV-2-induced
dysfunction.
Altogether,
understanding
ACE2-dependent
driving
would
shed
light
strategies
effective
therapies
targeting
complications
associated
COVID-19.
International Journal of Molecular Sciences,
Journal Year:
2023,
Volume and Issue:
24(16), P. 12585 - 12585
Published: Aug. 9, 2023
COVID-19
progression
often
involves
severe
lung
injury,
inflammation,
coagulopathy,
and
leukocyte
infiltration
into
pulmonary
tissues.
The
pathogenesis
of
these
complications
is
unknown.
Because
vascular
endothelium
neutrophils
express
angiotensin-converting
enzyme-2
spike
(S)-proteins,
which
are
present
in
bodily
fluids
tissues
SARS-CoV-2-infected
patients,
we
investigated
the
effect
S-proteins
cell-cell
communication
on
human
microvascular
endothelial
cells
expression
P-selectin,
markers
NETosis,
inflammation.
Exposure
or
to
endothelial-neutrophils
co-culture
induced
P-selectin
transcription
expression,
significantly
increased
expression/secretion
IL-6,
von
Willebrand
factor
(vWF,
pro-coagulant),
citrullinated
histone
H3
(cit-H3,
NETosis
marker).
Compared
SARS-CoV-2
Wuhan
variant,
Delta
variant
1.4-15-fold
higher
IL-6
vWF.
Recombinant
tissue
pathway
inhibitor
(rTFPI),
5,5'-dithio-bis-(2-nitrobenzoic
acid)
(thiol
blocker),
thrombomodulin
(anticoagulant)
blocked
S-protein-induced
vWF,
cit-H3.
This
suggests
that
following
contact
with
endothelial-neutrophil
interactions,
increase
adhesion
molecules,
induce
coagulopathy
via
pathway,
mechanisms
involving
functional
thiol
groups,
and/or
fibrinolysis
system.
Using
rTFPI,
effectors
system
thiol-based
drugs
could
be
viable
therapeutic
strategies
against
SARS-CoV-2-induced
coagulopathy.