Uncovering mercury accumulation and the potential for bacterial bioremediation in response to contamination in the Singalila National Park
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Янв. 29, 2025
Several
recent
investigations
into
montane
regions
have
reported
on
excess
mercury
accumulation
in
high-altitude
forest
ecosystems.
This
study
explored
the
Singalila
National
Park,
located
ridge
of
Eastern
Himalayas,
revealing
substantial
contamination.
Particular
focus
was
Sandakphu
(3636
m),
highest
peak
West
Bengal,
India.
It
harboured
6.77
±
0.01
mg/kg
total
its
topsoil.
Further
evidence
provided
by
leaves
(0.040
mg/kg),
and
roots
(0.150
0.008
mg/kg)
local
vegetation,
litterfall
(0.234
0.019
mosses
(0.367
0.043
surface
water
from
lakes
waterbodies
(0.010
0.005
mg/l),
fresh
snow
(0.014
0.004
sleet
(0.019
0.009
mg/l).
Samples
other
points
varying
elevation
park
also
demonstrated
The
soil
displayed
a
range
0.068-5.28
mg/kg,
while
mean
concentration
0.153
0.105
0.106
0.054
leaf
litter
0.240
0.112
mg/kg.
Additionally,
microbial
consortia
isolated
contaminated
high
tolerance
to
mercuric
chloride,
presumably
gained
through
repeated
consistent
exposure.
Four
bacterial
strains,
MTS2C,
MTS3A,
MTS4B
MTS6A,
were
further
characterized
for
potential
use
bioremediation
strategies.
Their
removal
capacities
determined
be
82.35%,
75.21%,
61.95%,
37.47%,
respectively.
Overall,
findings
presented
provide
highly
environment
that
poses
significant
ecological
risk
flora,
fauna
inhabitants
this
biodiversity
hotspot.
research
highlights
need
exploration
monitoring
Himalayas
role
as
sink
atmospheric
mercury.
Язык: Английский
In Vivo Study on the Salivary Kinetics of Two Probiotic Strains Delivered via Chewing Gum
Microorganisms,
Год журнала:
2025,
Номер
13(4), С. 721 - 721
Опубликована: Март 24, 2025
Probiotics
are
increasingly
used
to
promote
oral
health,
with
Lacticaseibacillus
rhamnosus
demonstrating
proven
effectiveness.
Additionally,
Heyndrickxia
coagulans
shows
promising
potential
in
this
field.
Chewing
gum
has
recently
been
proposed
as
an
innovative
delivery
method
for
probiotics.
This
study
aimed
evaluate
the
kinetics
saliva
of
SNZ1969®
and
GG
microencapsulated
non-microencapsulated
forms
(LGG®)
following
their
administration
via
sugar-free
chewing
gums.
A
randomized
cross-over
trial
was
conducted
involving
10
volunteers.
Participants
chewed
gums
containing
one
probiotic
strains
min.
Saliva
samples
were
collected
at
baseline
(T0)
six
subsequent
time
points
over
2
h
(T1–T6).
Colony-forming
units
(CFUs)
identified
quantified.
The
Tukey’s
range
test
applied
make
pairwise
comparisons
between
different
probiotics
every
point,
same
probiotic,
area
under
curve
describing
saliva.
At
T1,
all
exhibited
peak
counts,
followed
by
a
gradual
decline
until
T6.
H.
achieved
highest
counts
T2,
T3
(mean
log10
CFU/mL:
6.1
±
0.5;
5.8
5.6
0.5,
respectively),
while
form
LGG®
peaked
T4,
T5,
T6
4.0
0.7;
3.8
0.9;
3.3
1.3,
respectively).
participants
reported
no
adverse
effects.
detectable
up
post-administration
gum,
indicating
its
suitability
vehicle.
However,
significant
variability
observed
among
participants.
Язык: Английский
Comparative study of photodynamic therapy with LED and probiotics in the treatment of halitosis: protocol for a randomised controlled clinical trial
BMJ Open,
Год журнала:
2025,
Номер
15(4), С. e095544 - e095544
Опубликована: Апрель 1, 2025
Introduction
Halitosis
is
a
term
that
defines
any
unpleasant
odour
smell
originating
from
the
oral
cavity
and
may
have
local
or
systemic
origin.
This
project
aims
to
determine
effectiveness
of
treatment
involving
antimicrobial
photodynamic
therapy
(aPDT)
combined
with
using
probiotics
at
reducing
halitosis.
Methods
analysis
92
individuals
18
60
years
age
diagnosis
halitosis
(sulfide≥112
ppb,
gas
chromatography)
will
be
selected.
The
participants
randomly
allocated
four
groups
(n=23).
Group
1
(control):
brushing,
dental
floss
tongue
scraper;
group
2:
floss,
scraper
aPDT
blue
Light
Emitting
Diode
(LED)
+annatto;
3:
+annatto
probiotic
lozenges
containing
Streptococcus
salivarius
K12
(BLIS
K12);
4:
S.
K12).
Comparisons
made
respiratory
results
before
immediately
after
first
session,
end
30-day
period
again
days
initiation.
Microbiological
(counts
colony-forming
units
viable
bacteria
coated
tongue)
performed
same
time.
microbiome
conducted
treatment,
30
completion
initiation,
following
DNA
extraction.
All
receive
hygiene
instructions
as
well
brushes,
toothpaste
floss.
Data
normality
checked
Shapiro-Wilk
test.
In
case
normality,
variance
used
for
comparisons.
non-parametric
data,
Kruskal-Wallis
test
used.
Wilcoxon
analyse
each
between
two
assessment
times.
Ethics
dissemination
protocol
has
been
approved
by
Human
Research
Committee
Nove
de
Julho
University
(certificate
number:
82830524.6.0000.5511;
approval
date:
2
October
2024).
Participants
agree
take
part
in
study
signing
an
informed
consent
form.
findings
published
peer-reviewed
journal.
collected
data
available
OSF
repository.
Trial
registration
number
NCT06583720
.
Язык: Английский
Modern aspects of individual tongue hygiene (literature review)
Medical alphabet,
Год журнала:
2025,
Номер
10, С. 20 - 24
Опубликована: Май 21, 2025
There
are
many
methods
of
cleaning
the
tongue,
ranging
from
simple
ones
such
as
rubbing
with
fingers
or
a
spoon,
to
specialized
tools
scrapers
and
brushes.
Studies
show
that
few
patients
practice
daily
tongue
hygiene.
Surveys
reveal
low
awareness
language
among
certain
groups
population.
Tongue
play
an
important
role
in
oral
hygiene
by
removing
biofilm
food
residues,
which
helps
improve
health
fight
bad
breath.
Hygiene
contributes
prevention
dental
diseases.
Scrapers
made
various
materials
metal,
plastic
wood,
each
has
different
properties.
Metal
durable
easy
sterilize,
options
more
affordable.
Wooden
quite
environmentally
friendly.
The
shapes
also
vary:
U-shaped
similar
shape
while
T-shaped
provide
good
access
surface
tongue.
Regular
cleansing
reduces
breath
improves
Although
some
studies
do
not
identify
difference
between
using
toothbrushes
scrapers,
others
suggest
effective
at
reducing
volatile
sulfur
compounds
(VSC).
Recently,
researchers
have
studied
other
types
ultrasonic
microcurrent
generating
scrapers.
However,
improper
use
may
cause
irritation
injury.
special
for
hygiene,
when
used
correctly,
they
help
remove
plaque,
prevent
breath,
taste
perception.
Язык: Английский
Efeito do raspador lingual de polietilenotereftalato na remoção da saburra lingual
Research Society and Development,
Год журнала:
2024,
Номер
13(8), С. e14213846683 - e14213846683
Опубликована: Сен. 1, 2024
O
objetivo
deste
trabalho
foi
comparar
um
raspador
de
língua
obtido
garrafas
polietilenotereftalato
(PET)
com
modelo
comercial
(COM).
Um
desenho
paralelo,
controlado
e
randomizado
usado.
Dos
61
voluntários
do
Departamento
Odontologia
da
Universidade
Federal
Sergipe,
30
atenderam
aos
critérios
inclusão
exclusão
para
distribuição
aleatória
em
2
grupos:
PET
(n=15)
COM
(n=15).
Na
consulta
inicial,
o
Índice
Saburra
Lingual
Winkel
(ISL-W)
medido
antes
(T0)
imediatamente
após
(T1)
remoção
saburra
lingual
realizada
pelo
profissional,
que
forneceu
instruções
uso
caseiro
vezes
ao
dia.
Após
14
dias,
ISL-W
mensurado
T0
T1,
feita
participante.
30,
1
grupo
não
retornou
dias.
Os
dados
obtidos
T1
foram
submetidos
teste
t-Student
pareado
(α=0,05).
As
diferenças
entre
transformadas
valores
percentuais
analisadas
t
Student
das
consultas
inicial
dias
resultados
indicaram
os
raspadores
reduziram
significantemente
(P<0,05),
redução
semelhantes:
(34±36%)
(32±22%);
houve
significante
dos
(P<0,01).
Concluiu-se
capaz
remover
a
lingual,
semelhantes
COM,
reduzindo
caseiro.