Revista Foco,
Год журнала:
2024,
Номер
17(7), С. e5672 - e5672
Опубликована: Июль 16, 2024
A
listeriose
é
uma
doença
de
origem
alimentar
que
pode
ser
grave
e
mortal
em
grupos
alto
risco,
inclui
pacientes
imunocomprometidos,
idosos,
neonatos
gestantes.
maioria
dos
casos
são
esporádicos,
mas
há
relatos
surtos
ao
redor
do
mundo.
Entre
as
espécies
gênero
Listeria,
L.
monocytogenes
a
principal
espécie
patogênica
afeta
tanto
animais
quanto
humanos.
caracterizada
como
bactéria
Gram-positiva,
não
formadora
esporos,
encapsulada,
móvel,
anaeróbica
facultativa
intracelular.
transmissão
ocorre
através
da
ingestão
alimentos
contaminados.
geneticamente
heterogênea
dividida
diferentes
sorotipos
linhagens
filogenéticas.
Nesse
trabalho,
apresentamos
breve
revisão
narrativa
sobre
os
desta
bacteriana.
Listeria
monocytogenes
is
a
Gram-positive
bacterium
responsible
for
listeriosis,
serious
foodborne
disease
that
can
lead
to
health
complications.
Pregnant
women,
newborns,
the
elderly,
and
patients
with
weakened
immune
systems
are
particularly
susceptible
infection.
Due
ability
of
L.
survive
in
extreme
environmental
conditions,
such
as
low
temperatures,
high
salinity,
acidity,
this
poses
threat
food
production
plants
difficult
eliminate
from
these
plants.
One
promising
solutions
reduce
presence
products
bacteriocins
natural
control
agents.
These
substances
antibacterial
activity
produced
by
other
bacteria,
mainly
lactic
acid
bacteria
(LAB),
which
effectively
inhibit
development
pathogens
monocytogenes.
The
use
industry
beneficial
due
their
origin,
specificity
action,
consumer
safety.
However,
problem
resistance
exists.
This
review
focuses
on
mechanisms
bacteriocin
resistance,
modifications
docking
receptors,
changes
structure
cell
wall
membrane,
occurrence
cross-resistance
different
bacteriocins.
Genetic
factors
determining
strategies
cope
also
presented.
Research
issue
crucial
developing
effective
preventive
methods
will
enable
safe
long-term
production.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Ноя. 19, 2024
Soil
is
an
important
reservoir
of
antibiotic
resistance
genes
(ARGs)
and
understanding
how
corresponding
environmental
changes
influence
their
emergence,
evolution,
spread
crucial.
The
soil-dwelling
bacterial
genus
Listeria,
including
L.
monocytogenes,
the
causative
agent
listeriosis,
serves
as
a
key
model
for
establishing
this
understanding.
Here,
we
characterize
ARGs
in
594
genomes
representing
19
Listeria
species
that
previously
isolated
from
soils
natural
environments
across
United
States.
Among
five
putatively
functional
identified,
lin,
which
confers
to
lincomycin,
most
prevalent,
followed
by
mprF,
sul,
fosX,
norB.
are
predominantly
found
sensu
stricto
species,
with
those
more
closely
related
monocytogenes
tending
harbor
ARGs.
Notably,
phylogenetic
recombination
analyses
provide
evidence
recent
horizontal
gene
transfer
(HGT)
all
within
and/or
likely
mediated
transformation
rather
than
conjugation
transduction.
In
addition,
richness
genetic
divergence
associated
conditions,
particularly
soil
properties
(e.g.,
aluminum
magnesium)
surrounding
land
use
patterns
forest
coverage).
Collectively,
our
data
suggest
HGT
selection
play
vital
role
acquisition
diversification
environments.
It
remains
elusive
evolves
spreads.
Goh
et
al.
analyzed
nationwide
genomic
dataset
find
acting
on
evolution
Applied Sciences,
Год журнала:
2025,
Номер
15(3), С. 1454 - 1454
Опубликована: Янв. 31, 2025
This
descriptive
review
summarizes
the
most
recent
findings
on
induction
and
distribution
of
viable
non-culturable
(VBNC)
Listeria
monocytogenes
in
food
production
conditions
food.
The
aim
was
to
obtain
information
factors
that
favor
transition
VBNC
state
L.
monocytogenes;
its
resuscitation
capacity;
and,
according
scientific
articles
published
since
2020,
how
contamination
by
bacterium
a
can
be
prevented.
methods
used
for
detection
were
also
reviewed.
A
few
studies
reported
presence
food,
which
fresh
produce
chicken
meat
considered.
Different
physicochemical
stresses
such
as
exposure
disinfectants
with
diverse
actions
essential
oils,
desiccation,
low
temperatures,
absence
nutrients,
high
NaCl
iron
concentrations,
pH
adjusted
acetic
acid
induce
monocytogenes.
forms
able
regain
growth
virulence.
could
pose
safety
risk
cannot
revealed
standard
culture-dependent
recommended
detection.
Therefore,
plants
should
prevented
appropriate
use
hurdles
cleaning/disinfection
procedures.
opportunity
harmonize
cell
regular
evaluation
emerged.
Microbiology Resource Announcements,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 29, 2025
ABSTRACT
Six
Listeria
spp.
strains
were
isolated
from
frozen
corn
in
Japan.
Here,
we
report
the
draft
genome
sequences
of
these
strains.
The
sizes
ranged
2,853,850
to
3,062,263
bp
at
381×
564×
coverage.
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 27, 2024
Abstract
Soil
has
been
identified
as
an
important
reservoir
of
antibiotic
resistance
genes
(ARGs)
and
there
is
a
need
to
understand
how
corresponding
environmental
changes
influence
their
emergence,
evolution,
spread.
As
soil-dwelling
bacterial
genus
containing
pathogens,
Listeria,
including
L.
monocytogenes
,
the
causative
agent
listeriosis
in
humans,
could
serve
key
model
for
establishing
this
understanding.
Notably,
acquired
among
isolated
from
foods
environment
observed
some
regions
over
past
decade.
Here
we
characterized
ARGs
using
594
genomes
representing
19
Listeria
species
that
previously
soils
across
United
States.
Among
five
putatively
functional
identified,
lin
which
confers
lincomycin,
was
most
prevalent,
followed
by
mprF,
sul,
fosX
norB
.
were
found
be
predominant
sensu
stricto
more
closely
related
tended
harbor
ARGs.
lin,
fosX,
showed
evidence
recent
horizontal
gene
transfer
(HGT)
species,
likely
through
transformation
opposed
conjugation
transduction,
while
mprF
sul
appear
have
undergone
positive
selection.
In
addition,
soil
properties
surrounding
land
use
factors
associated
with
ARG
richness
genetic
divergence,
respectively.
Using
machine
learning,
demonstrated
presence
can
predicted
variables
good
accuracy
(mean
auROC
0.76).
Collectively,
our
data
suggest
HGT
selection
played
vital
role
acquisition
diversification
environment.
