Asian Journal of Chemistry,
Journal Year:
2024,
Volume and Issue:
36(3), P. 531 - 542
Published: Feb. 28, 2024
The
release
of
metals
into
the
environment
raises
serious
concerns
about
their
harmful
effects
on
both
wildlife
and
human
health.
biosphere
is
experiencing
with
pervasive
presence
heavy
metal
pollutants
such
as
arsenic
(As),
cadmium
(Cd),
mercury
(Hg),
lead
(Pb),
chromium
(Cr),
copper
(Cu)
nickel
(Ni),
which
pose
significant
environmental
challenges.
While
certain
are
essential
for
regulating
fundamental
metabolic
processes
upholding
overall
physiology
microorganisms,
excessive
exposure
to
can
be
detrimental
survival
function.
As
a
result
remarkable
adaptability,
particularly
bacteria
Pseudomonas
fluorescens,
Escherichia
coli,
Serratia
marcescens,
Bacillus
cereus
Alcaligenes
sp.,
have
evolved
sophisticated
defence
mechanisms
combat
stress
caused
by
metals.
One
process
creation
metal-binding
proteins
(MBPs),
may
bind
sequester
metals,
thus
significantly
lowering
toxicity
in
bacteria.
Metalloproteomics,
subfield
metallomics,
focuses
discovery
characterization
(MBPs)
metal-resistant
bacteria,
resulting
opening
doors
innovative
bioremediation
techniques
therapeutic
treatments
against
bacterial
diseases.
This
review
explores
intriguing
world
MBPs
emphasizes
role
resistance,
detoxification
homeostasis.
Furthermore,
metallochaperones
been
extensively
studied
using
metalloproteomic
methodologies
utilized
proteins.
study
also
provides
useful
information
interactions
between
these
different
MBPs,
advances
our
understanding
how
respond
Sustainability,
Journal Year:
2025,
Volume and Issue:
17(2), P. 416 - 416
Published: Jan. 8, 2025
Global
population
growth
generates
problems
relating
to
increasing
demand
for
sustainable
energy
and
waste
treatment.
Proper
solid
management
promotes
material
reuse,
maximizes
recovery
reduces
anthropological
pressure
on
natural
resources.
Anaerobic
digestion
(AD)
is
an
alternative
method
of
stabilizing
organic
substrates
generating
biogas
as
a
source
environmentally
friendly
energy.
In
addition,
digestate
not
only
product
that
process
but
also
renewable
resource
with
many
potential
applications.
The
circular
economy
concept
encourages
the
use
nutrients
plant
improves
soil
properties.
However,
stabilized
often
contain
various
contaminants,
including
heavy
metals
(HMs)
antibiotics
are
detected
in
digestate.
Therefore,
agricultural
obtained
by
AD
could
increase
pool
these
pollutants
water
environments
contribute
their
circulation
ecosystems.
Moreover,
may
co-selection
genes
determining
resistance
HMs
environmental
microorganisms.
This
article
comprehensively
reviews
published
data
residues
antimicrobial
substances
different
digestates
around
world
maps
scope
problem.
risk
residual
levels
contaminants
has
been
evaluated.
review
highlights
lack
legal
standards
regulating
concentrations
drugs
introduced
into
results
ecological
assessment
indicate
presence
medically
important
antimicrobials
products,
especially
those
used
agriculture,
should
be
limited.
One Health Bulletin,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 29, 2025
Objective:
To
determine
the
antibiotic
susceptibility
patterns
of
heavy
metal-tolerant
Gram-negative
bacteria
isolated
from
a
major
dumpsite
in
Ibadan,
Nigeria.
Methods:
were
using
MacConkey
and
eosin
methylene
blue
agar
presumptive
identification
to
species
level
was
done
conventional
methods.
The
isolates
screened
for
their
tolerance
metals.
Antimicrobial
tested
by
Kirby-Bauer
disc
diffusion
method
with
following
antibiotics:
tetracycline
(10
μg),
cotrimoxazole
(25
gentamicin
cefuroxime
(30
chloramphenicol
ceftriaxone
cefotaxime
ciprofloxacin
(5
amikacin
ceftazidime
meropenem
μg).
zones
growth
inhibition
interpreted
based
on
Clinical
Laboratory
Scientific
Institute.
Identification
most
16S
rRNA.
Results:
A
total
79
isolated,
31
which
tolerated
minimum
three
metals
(Pb
at
10
350
μg/
mL;
Cu
750
μg/mL;
Cr
μg/mL
wet
season
Pb
2
450
300
dry
season).
All
showed
varying
degrees
multiple
resistance
indexes.
highest
(100%)
least
(51.6%).
identified
as
Aeromonas
hydrophila
Pseudomonas
aeruginosa
.
Conclusions:
This
study
revealed
that
waste
contains
significant
amounts
antibiotic-resistant
may
pose
serious
public
health
risks
if
they
enter
food
chain.
highlighted
untreated
soils
vegetable
farming
due
pathogen
metal
transfer,
it
is
unsuitable
agricultural
use.
Bioremediation Journal,
Journal Year:
2023,
Volume and Issue:
unknown, P. 1 - 22
Published: Nov. 24, 2023
The
present
study
was
conducted
with
the
goal
of
isolation,
characterization,
optimization
and
exploitation
cadmium
(Cd)
bioremediation
potential
Cd-resistant
bacterial
strains
from
Holy
Kali
Bein,
Punjab,
India.
From
biochemical
analysis,
protein-based
identification
by
using
Matrix-Assisted
Laser
Desorption
Ionization-Time
Flight
Mass
Spectroscopy
(MALDI-TOF)
16S
rRNA
sequencing
isolate
KCd7
identified
as
Aeromonas
caviae,
KCd8
Exiguobacterium
indicum
KCd9
Acinetobacter
haemolyticus.
isolates
KCd7,
exhibited
high
degree
Cd
resistance,
up
to
400,
400
500
mg/L
respectively,
multiple
antibiotic
resistances
(MAR)
index
above
0.0,
0.08
0.016
respectively.
optimal
conditions
were
recorded
as:
initial
metal
concentration
150
mg/L,
temperature
37
°C
for
all
three
isolates,
pH
8
pH7.5
KCd9.
Results
showed
that
can
remove
100%
within
168
h
70%
144
study's
results
demonstrated
(Acinetobacter
haemolyticus)
is
more
effective
than
other
since
it
completely
eliminate
aqueous
medium
in
just
came
conclusion
these
bacteria
have
cadmium.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Sept. 2, 2024
The
tannery
industry
produces
one
of
the
worst
contaminants,
and
unsafe
disposal
in
nearby
waterbodies
landfills
has
become
an
imminent
threat
to
public
health,
especially
when
resulting
multidrug-resistant
bacteria
heavy
metals
enter
community
settings
animal
food
chains.
In
this
study,
we
have
collected
10
wastewater
(TWW)
samples
additional
non-tannery
(NTW)
compare
chemical
oxygen
demand
(COD),
pH,
biological
(BOD),
dissolved
(DO),
total
solids
(TDS),
chromium
concentration,
bacterial
load,
antibiotic
resistance
profiles.
While
COD,
concentration
data
were
previously
published
from
our
lab,
part
study
uncovers
that
TWW
had
a
significantly
higher
compared
(5.89
×
104
9.38
103
cfu/mL,
respectively),
BOD
TDS
values,
lower
DO
values.
results
showed
53.4,
46.7,
40.0,
40.0%
isolates
resistant
ceftriaxone,
erythromycin,
nalidixic
acid,
azithromycin,
respectively.
On
other
hand,
20.0,
30.0,
50.0,
NTW
same
antibiotics,
These
findings
suggest
more
antibiotics
than
isolates.
Moreover,
exhibited
multidrug
isolates,
33.33,
20.00%,
Furthermore,
spearman
correlation
analysis
depicts
there
is
negative
between
load
up
certain
level
(r
=
−
0.7749,
p
0.0085).
addition,
also
consistent
COD
0.7112,
0.0252)
0.7621,
0.0104).
could
pose
significant
risk
health
environment
highlight
importance
proper
treatment
industries.
Antibiotics,
Journal Year:
2023,
Volume and Issue:
12(12), P. 1678 - 1678
Published: Nov. 29, 2023
The
study
examines
the
antibiotic
resistance
of
metal-tolerant
bacteria
isolated
from
wastewater
treatment
plant
a
large
city
to
six
antibiotics
belonging
β-lactam
antibiotics,
aminoglycosides
and
amphenicols.
Resistance
sewage
sludge
multitolerant
heavy
metals
18
tetracyclines,
aminoglycosides,
diaminopyrimidines,
amphenicols
ansamycins
was
studied
also.
Out
10,
microorganisms
facilities
only
Klebsiella
pneumonia
strain
(tolerant
3
mM
Cu)
secondary
settling
tank
did
not
show
at
concentrations
considered.
maximum
amount
typical
for
strains
Serratia
fonticola
SS0-1,
fresh
resistant
5
mmol
Cu
Pb,
or
Stenotrophomonas
maltophilia
SS0-5,
also
Zn
Cu.
It
is
possible
that
bacterial
develops
as
result
use
themselves,
but
environmental
pollution
with
metals,
vice
versa.
Bioremediation Journal,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1 - 14
Published: March 14, 2024
Cr(VI)
is
one
of
the
most
widely
used
elements
in
various
industrial
sectors
and,
hence,
extensively
found
as
a
toxicant
ecosystem.
The
biotransformation
via
microorganisms
considered
an
ecofriendly
approach
for
its
detoxification.
present
study
focused
on
isolation
indigenous
bacterium
from
municipal
solid
waste
dumpsite
soils
with
relatively
higher
resistance
(>1000
mg
L−1
broth)
and
97%
reduction
(100
L−1)
under
conditions
37
°C,
pH
7,
120
rpm
48
h.
biochemical
16
S
rRNA
gene
sequencing
showed
that
isolate
exhibits
99%
similarity
Mammaliicoccus
sciuri.
Partial
reductase
sequences
were
retrieved,
showing
96%
to
NADPH-dependent
FMN
reductases.
Fourier
transform
infrared
spectroscopy,
scanning
electron
microscopy-energy
dispersive
X-ray
spectroscopy
presence
Cr
products
bacterial
cells.
photoelectron
spectroscopic
analysis
confirmed
valence
state
residual
Cr(III).
Furthermore,
quantitative
localization
reduced
transmission
microscopic
intracellular
accumulation
A
multifaceted
mechanism,
including
surface
adsorption
bioaccumulation
after
biotransformation,
confers
potential
identity
strain
sciuri
jv5
toward
remediation
polluted
environment
niche.