bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2023,
Номер
unknown
Опубликована: Июль 26, 2023
Abstract
Clostridioides
difficile
represents
a
major
burden
to
public
health.
As
well-known
nosocomial
pathogen
whose
occurrence
is
highly
associated
with
antibiotic
treatment,
most
examined
C.
strains
originated
from
clinical
specimen
and
were
isolated
under
selective
conditions
emplyoing
antibiotics.
This
suggests
significant
bias
among
analysed
strains,
which
impedes
holistic
view
on
this
pathogen.
In
order
support
extensive
isolation
of
environmental
samples,
we
designed
detection
PCR
that
targets
the
hpdBCA
operon
thereby
identifies
low
abundances
in
samples.
Amplicon-based
analyses
diverse
samples
demonstrated
specific
for
successfully
detected
despite
its
absence
general
16S
rRNA
gene-based
strategies.
Further
revealed
potential
sequence
initial
phylogenetic
classification,
allows
assessing
diversity
via
amplicon
sequencing.
Our
findings
furthermore
showed
treatment
originally
dominated
by
other
according
results.
provided
evidence
cultivation
under-represented
but
antibiotic-resistant
isolates.
Thereby,
substantial
research.
Importance
mainly
responsible
hospital-acquired
infections
after
serious
morbidity
mortality
worldwide.
Research
virulence
focused
bacterial
implies
strains.
Comprehensive
studies
however
require
an
unbiased
strain
collection,
accomplished
avoiding
antibiotic-based
enrichment
Thus,
can
significantly
benefit
our
-specific
PCR,
rapidly
verifies
presence
further
estimation
using
NGS.
Clinical Infectious Diseases,
Год журнала:
2023,
Номер
77(2), С. 280 - 286
Опубликована: Март 28, 2023
Severely
immunocompromised
patients
are
at
risk
for
prolonged
or
relapsed
Coronavirus
Disease
2019
(COVID-19),
leading
to
increased
morbidity
and
mortality.
We
aimed
evaluate
efficacy
safety
of
combination
treatment
in
COVID-19
patients.We
included
all
with
prolonged/relapsed
treated
therapy
2
antivirals
(remdesivir
plus
nirmatrelvir/ritonavir,
molnupiravir
case
renal
failure)
plus,
if
available,
anti-spike
monoclonal
antibodies
(mAbs),
between
February
October
2022.
The
main
outcomes
were
virological
response
day
14
(negative
Severe
Acute
Respiratory
Syndrome
[SARS-CoV-2]
swab)
clinical
(alive,
asymptomatic,
negative
SARS-CoV-2
30
the
last
follow-up.Overall,
22
(Omicron
variant
17/18)
included:
18
received
full
mAbs
4
only;
20
(91%)
patients,
nirmatrelvir/ritonavir
remdesivir.
Nineteen
(86%)
had
hematological
malignancy,
15
(68%)
anti-CD20
therapy.
All
symptomatic;
8
(36%)
required
oxygen.
Four
a
second
course
treatment.
rate
14,
30,
follow-up
was
75%
(15/20
evaluable),
73%
(16/22),
82%
(18/22),
respectively.
Day
rates
significantly
higher
when
mAbs.
Higher
number
vaccine
doses
associated
better
final
outcome.
Two
(9%)
developed
severe
side
effects
(bradycardia
remdesivir
discontinuation
myocardial
infarction).Combination
including
(mainly
nirmatrelvir/ritonavir)
high
COVID-19.
COVID-19
in
immunocompromised
patients
is
difficult
to
treat.
SARS-CoV-2
interaction
with
the
host
immune
system
and
role
of
therapy
still
remains
only
partly
understood.
There
are
no
data
regarding
use
monoclonal
antibodies
combination
two
antivirals
fighting
viral
replication
disease
progression.
We
report
cases
patients,
both
treated
rituximab
for
non-Hodgkin
lymphoma
granulomatosis
polyangiitis,
respectively,
hospitalized
positive
RNAemia,
who
were
successfully
a
salvage
sotrovimab,
remdesivir
nirmatrelvir/ritonavir.
Hematological Oncology,
Год журнала:
2023,
Номер
41(5), С. 904 - 911
Опубликована: Июль 15, 2023
Despite
global
vaccination
efforts,
immunocompromized
patients
remain
at
high
risk
for
COVID-19-associated
morbidity.
In
particular,
with
impaired
humoral
immunity
have
shown
a
of
persistent
infection.
We
report
case
series
adult
B
cell
malignancies
and/or
undergoing
targeting
therapies
persisting
SARS-CoV-2
infection
and
treated
combination
antiviral
therapy
remdesivir
nirmatrelvir/ritonavir,
in
three
Italian
tertiary
academic
hospitals.
A
total
14
adaptive
prolonged
were
the
dual
therapy.
The
median
age
was
60
(IQR
56-68)
years,
11
male.
Twelve
had
lymphoma,
one
patient
chronic
lymphocytic
leukemia
multiple
sclerosis.
Thirteen
out
received
prior
cell-targeting
therapies,
consisting
anti-CD20
monoclonal
antibodies
patients,
chimeric
antigen
receptor
T
2
patients.
time
between
diagnosis
start
42.0
35-46)
days.
Seven
mild,
6
moderate
severe
disease.
Nine
signs
interstitial
pneumonitis
on
chest
computed
tomography
scans
before
treatment.
duration
nirmatrelvir/ritonavir
10
All
showed
resolution
COVID-19-related
symptoms
after
4-11)
days
viral
clearance
9
5-11)
Combination
is
promising
treatment
option
COVID-19
impairment,
worthy
prospective
comparative
trials.
Frontiers in Medicine,
Год журнала:
2024,
Номер
11
Опубликована: Фев. 29, 2024
Objectives
The
aim
of
the
study
was
to
describe
a
cohort
B-cell-depleted
immunocompromised
(IC)
patients
with
prolonged
or
relapsing
COVID-19
treated
monotherapy
combination
therapy.
Methods
This
is
multicenter
observational
retrospective
conducted
on
IC
consecutively
hospitalized
SARS-CoV-2
infection
from
November
2020
January
2023.
subjects
were
stratified
according
anti-SARS-CoV-2
therapy
received.
Results
Eighty-eight
enrolled,
19
under
and
69
population
had
history
immunosuppression
(median
2
B-cells/mm
3
,
IQR
1–24
cells),
residual
hypogammaglobulinemia
observed
in
55
patients.
A
reduced
length
hospitalization
time
negative
molecular
nasopharyngeal
swab
(NPS)
versus
group
observed.
In
univariable
multivariable
analyses,
percentage
change
rate
days
NPS
negativity
showed
significant
reduction
receiving
compared
those
monotherapy.
Conclusion
persistent
patients,
it
essential
explore
new
therapeutic
strategies
such
as
multi-target
(antiviral
double
antiviral
plus
antibody-based
therapies)
avoid
viral
shedding
and/or
severe
infection.
International Journal of Infectious Diseases,
Год журнала:
2024,
Номер
144, С. 107046 - 107046
Опубликована: Апрель 12, 2024
ObjectivesTo
investigate
the
effectiveness
of
intravenous
immunoglobulin
(IVIG)
as
treatment
for
COVID-19
in
immunocompromised
patients.MethodsThis
retrospective
study
investigated
outcomes
immunocompromised,
vaccine
non-responsive,
patients
that
between
September
2022
and
April
2023
received
IVIG
region
Västerbotten,
Sweden.
We
analyzed
clinical
data,
viral
load,
anti-SARS-CoV-2
IgG
binding
neutralization
levels
patient
serum
samples
production
batches.
Primary
secondary
were
cure
clearance,
respectively.ResultsSixteen
analyzed.
After
a
median
duration
four
weeks,
60g
infusion
increased
SARS-CoV-2
neutralizing
antibody
levels,
with
broad
vitro
activity
against
tested
variants.
The
resulted
abrogation
viremia
all
general
improvement
15
survivors
met
primary
endpoint.
Thirteen
endpoint
at
follow-up
after
months.
Two
subjects
persistent
carriage
relapsed
but
successfully
retreated
IVIG.ConclusionsAntibodies
efficiently
neutralized
several
Treatment
was
associated
clearance
patients.
Our
data
suggests
could
be
novel
alternative
this
category.
Abstract
Background
Morbidity
and
mortality
are
higher
in
immunocompromised
patients
affected
by
COVID-19
than
the
general
population.
Some
authors
have
successfully
used
antiviral
combination,
but
never
early
phase
of
infection.
Methods
We
conducted
a
retrospective
cohort
study
to
determine
efficacy
safety
combination
two
antivirals,
with
without
monoclonal
antibody
(mAb),
both
(within
10
days
symptoms)
later
(after
days)
SARS-CoV-2
infection
admitted
our
Facility.
Results
treated
11
(seven
an
four
late
COVID-19)
intravenous
remdesivir
plus
five
oral
nirmatelvir/ritonavir,
also
combined
sotrovimab
10/11
cases.
Notably,
all
“early”
reached
virological
clearance
at
day
30
from
end
therapy
were
alive
well
follow-up,
whereas
corresponding
numbers
“late”
50%
75%.
Patients
group
more
frequently
needed
oxygen
supplementation
(p
=
0.015)
steroid
0.045)
during
admission
severity
0.017).
Discussion
The
is
tolerated
associated
100%
clearance.
lower
response
rates
disease
severity,
whether
plays
causative
role
such
findings
has
yet
be
determined.
Journal of Microbiology Immunology and Infection,
Год журнала:
2023,
Номер
57(1), С. 189 - 194
Опубликована: Сен. 27, 2023
We
present
a
retrospective
study
on
the
treatment
outcomes
of
severely
immunocompromised
patients
with
persistent
COVID-19.
The
analyzed
data
from
14
who
received
combination
tixegavimab/cilgavimab
and
antiviral
medications.
Response
was
evaluated
based
symptom
improvement,
PCR
cycle-threshold
values,
C-responsive
protein
levels.
Eleven
achieved
complete
clinical
virological
resolution,
while
three
showed
partial
responses.
suggests
potential
association
between
non-response
neutralization.
findings
underscore
need
for
tailored
approaches
further
research
optimal
strategies
managing
COVID-19,
as
well
development
antivirals
variant-specific
monoclonal
antibodies.
Blood Reviews,
Год журнала:
2024,
Номер
65, С. 101180 - 101180
Опубликована: Фев. 2, 2024
CLL
is
associated
with
an
increased
risk
of
infectious
complications.
Treatment
BTK
or
BCL-2
inhibitors
does
not
seem
to
increase
significantly
the
opportunistic
infections,
but
role
combination
therapies
including
and/or
remains
be
established.
Various
complications
can
successfully
prevented
appropriate
management
strategies.
In
this
paper
we
reviewed
international
guidelines
on
prevention
and
in
patients
treated
inhibitors.
Universal
pharmacological
anti-herpes,
antibacterial
antifungal
prophylaxis
warranted.
Reactivation
HBV
should
HBsAg-positive
subjects.
For
HBsAg-negative/HBcAb-positive
recommendations
differ,
case
treatment
follow
those
for
other,
particularly
anti-CD20,
agent.
Immunization
provided
preferably
before
onset
treatment.
Immunoglobulin
therapy
has
favourable
impact
morbidity
mortality
hypogammaglobulinemia
severe
recurrent
infections.
Lack
high-quality
data
heterogeneity
protocols
included
studies
might
explain
differences
among
main
guidelines.
Better
collection
Antibiotics,
Год журнала:
2023,
Номер
12(9), С. 1460 - 1460
Опубликована: Сен. 19, 2023
Prolonged
SARS-CoV-2
infections
are
widely
described
in
immunosuppressed
patients,
but
safe
and
effective
treatment
strategies
lacking.
We
aimed
to
outline
our
approach
treating
persistent
COVID-19
patients
with
immunosuppression
from
different
causes.
In
this
case
series,
we
retrospectively
enrolled
all
treated
at
centers
between
March
2022
February
2023.
Patients
received
sequential
or
combination
regimens,
including
antivirals
(remdesivir,
nirmatrelvir/ritonavir,
molnupiravir)
and/or
monoclonal
antibodies
(mAbs)
(tixagevimab/cilgavimab
sotrovimab).
The
main
outcome
was
a
complete
virological
response
(negative
RT-PCR
on
nasopharyngeal
swabs)
the
end
of
treatment.
Fifteen
were
included
as
follows:
eleven
(11/15;
73%)
hematological
disease
four
(4/15;
27%)
recently
diagnosed
HIV/AIDS
infection.
Six
(6/15;
40%)
single
antiviral
course,
an
mAbs
sequentially,
two
(13%)
three
lines
(a
sequence
mAbs).
A
one
plus
administered
cases
(3/15,
20%).
One
patient
died
while
still
positive
for
SARS-CoV-2,
fourteen
(14/15;
93%)
tested
negative
within
16
days
after
median
time
negativization
since
last
2.5
days.
Both
regimens
used
study
demonstrated
high
efficacy
safety
high-risk
group
patients.