medRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2021,
Volume and Issue:
unknown
Published: Sept. 25, 2021
Abstract
Background
Much
research
shows
that
blood
calcidiol
(25(OH)D3)
levels
correlate
strongly
with
SARS-CoV-2
infection
severity.
There
is
open
discussion
regarding
whether
low
D3
caused
by
the
or
if
deficiency
negatively
affects
immune
defense.
The
aim
of
this
study
was
to
collect
further
evidence
on
topic.
Methods
Systematic
literature
search
performed
identify
retrospective
cohort
as
well
clinical
studies
COVID-19
mortality
rates
versus
levels.
Mortality
from
were
corrected
for
age,
sex
and
diabetes.
Data
analyzed
using
correlation
linear
regression.
Results
One
population
seven
identified,
which
reported
pre-infection
day
hospital
admission.
They
independently
showed
a
negative
Pearson
risk
(r(17)=-.4154,
p=.0770/r(13)=-.4886,
p=.0646).
For
combined
data,
median
(IQR)
23.2
ng/ml
(17.4
–
26.8),
significant
observed
(r(32)=-.3989,
p=.0194).
Regression
suggested
theoretical
point
zero
at
approximately
50
D3.
Conclusions
two
datasets
provide
strong
predictor
rather
than
side
effect
infection.
Despite
ongoing
vaccinations,
we
recommend
raising
serum
25(OH)D
above
prevent
mitigate
new
outbreaks
due
escape
mutations
decreasing
antibody
activity.
Trial
registration
Not
applicable.
BMC Public Health,
Journal Year:
2021,
Volume and Issue:
21(1)
Published: Oct. 9, 2021
Abstract
Background
Vitamin-D
deficiency
is
linked
to
a
wide
range
of
chronic
and
infectious
diseases.
Body
literature
suggested
that
the
prevalence
this
can
have
geographical
variation.
Although
vitamin
D
frequently
reported
in
South
Asian
population,
scarcity
systematic
reviews
meta-analysis
means
true
extent
disease
underlying
factors
causing
it
are
poorly
characterized.
Methods
A
search
was
performed
using
two
databases
(PubMed
Scopus)
one
engine
(Google
Scholar)
for
original
studies
on
population
(published
from
January
1,
2001,
December
31,
2019).
Following
search,
random
effect
calculate
population-level
weighted
average,
pooled
deficiency,
heterogeneity
among
different
countries
genders;
addition
Asia
as
whole.
Results
Our
study,
based
our
selection
criteria
narrowed
down
total
44,717
participants;
which
spanned
over
65
five
countries.
Overall,
68%
[95%
CI:
64
72%]
with
significant
(I
2
=
98%;
p
0.00).
The
average
level
ranged
4.7
32
ng/mL,
mean
19.15
ng/mL
(weighted
standard
deviation
11.59
ng/mL).
highest
found
Pakistan
(73%;95%
63
83%)
followed
by
Bangladesh
(67%;
95%
50
83%),
India
61
73%),
Nepal
(57%;
53
60%)
Sri
Lanka
(48%;
41
55%),
respectively.
This
finding
indicated
high
degree
population.
98.76%),
Furthermore,
gender-wise
analysis
Asia,
higher
females
than
males.
Conclusion
findings
reveal
highly
prevalent
variable
adults
Findings
review
would
be
helpful
generate
hypotheses
explore
affecting
inter-country
variability,
alongside
strengthening
evidence
governments
prioritize
mitigation
strategies
region.
Endocrine,
Journal Year:
2021,
Volume and Issue:
72(2), P. 301 - 316
Published: May 1, 2021
COVID-19
has
completely
changed
our
daily
clinical
practice
as
well
social
relations.
Many
organs
and
biological
systems
are
involved
in
SARS-Cov-2
infection,
either
due
to
direct
virus-induced
damage
or
indirect
effects
that
can
have
systemic
consequences.
Endocrine
system
is
not
only
an
exception
but
its
involvement
so
relevant
"endocrine
phenotype"
of
progressively
acquired
relevance.
Angewandte Chemie International Edition,
Journal Year:
2021,
Volume and Issue:
60(13), P. 7098 - 7110
Published: Jan. 20, 2021
Abstract
We
investigate
binding
of
linoleate
and
other
potential
ligands
to
the
recently
discovered
fatty
acid
site
in
SARS‐CoV‐2
spike
protein,
using
docking
molecular
dynamics
simulations.
Simulations
suggest
that
dexamethasone
stabilize
locked
conformation,
thus
reducing
opportunity
for
ACE2
interaction.
In
contrast,
cholesterol
may
expose
receptor‐binding
domain
by
destabilizing
closed
structure,
preferentially
a
different
hinge
region
open
structure.
docked
library
FDA‐approved
drugs
an
approach
reproduces
structure
complex.
Docking
identifies
steroids
(including
vitamin
D);
retinoids
(some
known
be
active
vitro,
A);
K
as
conformation.
The
bind
diverse
array
ligands,
including
dietary
components,
therefore
provides
promising
target
therapeutics
or
prophylaxis.
Nutrients,
Journal Year:
2021,
Volume and Issue:
13(10), P. 3596 - 3596
Published: Oct. 14, 2021
Much
research
shows
that
blood
calcidiol
(25(OH)D3)
levels
correlate
strongly
with
SARS-CoV-2
infection
severity.
There
is
open
discussion
regarding
whether
low
D3
caused
by
the
or
if
deficiency
negatively
affects
immune
defense.
The
aim
of
this
study
was
to
collect
further
evidence
on
topic.
Pathogens,
Journal Year:
2021,
Volume and Issue:
10(5), P. 565 - 565
Published: May 7, 2021
The
pathogenesis
of
coronavirus
disease
2019
(COVID-19),
caused
by
severe
acute
respiratory
syndrome
2
(SARS-CoV-2),
is
still
not
fully
unraveled.
Though
preventive
vaccines
and
treatment
methods
are
out
on
the
market,
a
specific
cure
for
has
been
discovered.
Recent
investigations
research
studies
primarily
focus
immunopathology
disease.
A
healthy
immune
system
responds
immediately
after
viral
entry,
causing
immediate
annihilation
recovery.
However,
an
impaired
causes
extensive
systemic
damage
due
to
unregulated
response
characterized
hypersecretion
chemokines
cytokines.
elevated
levels
cytokine
or
hypercytokinemia
leads
distress
(ARDS)
along
with
multiple
organ
damage.
Moreover,
against
SARS-CoV-2
linked
race,
gender,
age;
hence,
this
infection's
outcome
differs
among
patients.
Many
therapeutic
strategies
focusing
immunomodulation
have
tested
assuage
storm
in
patients
COVID-19.
thorough
understanding
diverse
signaling
pathways
triggered
virus
essential
before
contemplating
relief
measures.
This
present
review
explains
interrelationships
hyperinflammatory
severity.
Furthermore,
we
thrown
light
mechanisms
risk
factors
that
influence
molecular
lead
infection
Recognition
altered
dysregulated
can
be
loophole
identify
potential
target
markers.
Identifying
biomarkers
pathway
aid
better
clinical
management
COVID-19
special
also
given
potent
inhibitors
proinflammatory
cytokines,
immunomodulatory
immunotherapeutic
options
ameliorate
inflammatory
responses
affected
JAMA Network Open,
Journal Year:
2021,
Volume and Issue:
4(3), P. e214117 - e214117
Published: March 19, 2021
Deficient
(ie,
<20
ng/mL)
or
insufficient
20
to
<30
25-hydroxyvitamin
D
(also
known
as
calcifediol)
levels
are
more
common
in
Black
individuals
than
White
and
associated
with
increased
coronavirus
disease
2019
(COVID-19)
risk.
Whether
COVID-19
risk
is
differences
vitamin
of
30
ng/mL
greater
not
known.