Frontiers in Pharmacology,
Journal Year:
2022,
Volume and Issue:
13
Published: Oct. 24, 2022
Osteoarthritis,
as
a
common
joint
disease
among
middle-aged
and
elderly
people,
has
many
problems,
such
diverse
pathogenesis,
poor
prognosis
high
recurrence
rate,
which
seriously
affects
patients’
physical
mental
health
reduces
their
quality
of
life.
At
present,
the
pathogenesis
osteoarthritis
is
not
completely
clear,
treatment
plan
mainly
to
relieve
symptoms
ensure
basic
Therefore,
it
particularly
urgent
explore
osteoarthritis.
Protein,
organic
macromolecule
plays
major
role
in
life
activities,
an
important
development
disease.
Through
protein
omics,
this
study
found
that
with
increase
age,
excessive
sulfur
oxidation
occurred
endoplasmic
reticulum
chondrocytes,
then
drove
occurrence
inflammatory
reaction,
provided
direction
for
follow-up
molecular
targeted.
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(4), P. 1842 - 1853
Published: Jan. 16, 2024
Following
its
introduction
as
an
alternative
to
perfluorooctanoic
acid,
hexafluoropropylene
oxide
dimer
acid
(HFPO-DA)
has
been
extensively
detected
in
various
environmental
matrices.
Despite
this
prevalence,
limited
information
is
available
regarding
hepatotoxicity
biomarkers.
In
study,
toxicokinetic
simulations
indicated
that
under
repeated
treatment,
HFPO-DA
mice
serum
reached
a
steady
state
by
the
4th
day.
To
assess
subacute
hepatic
effects
and
identify
potential
biomarkers,
were
administered
orally
at
doses
of
0,
0.1,
0.5,
2.5,
12.5,
or
62.5
mg/kg/d
for
7
d.
Results
revealed
lowest
observed
adverse
effect
levels
0.5
hepatomegaly
2.5
injury.
Serum
metabolomics
analysis
identified
34,
58,
118
differential
metabolites
groups,
respectively,
compared
control
group.
Based
on
weighted
gene
coexpression
network
analysis,
eight
hepatotoxicity-related
identified;
among
them,
kynurenic
(KA)
mouse
exhibited
highest
correlation
with
liver
Furthermore,
liver-targeted
demonstrated
exposure
induced
metabolic
migration
kynurenine
pathway
from
KA
nicotinamide
adenine
dinucleotide,
resulting
activation
endoplasmic
reticulum
stress
nuclear
factor
kappa-B
signaling
pathway.
Notably,
pretreatment
significantly
attenuated
injury
mice,
highlighting
pivotal
roles
HFPO-DA.
Journal of Pharmaceutical Analysis,
Journal Year:
2023,
Volume and Issue:
14(5), P. 100919 - 100919
Published: Dec. 12, 2023
The
presence
of
N-nitroso
compounds,
particularly
N-nitrosamines,
in
pharmaceutical
products
has
raised
global
safety
concerns
due
to
their
significant
genotoxic
and
mutagenic
effects.
This
systematic
review
investigates
toxicity
active
ingredients,
drug
products,
excipients,
along
with
novel
analytical
strategies
for
detection,
root
cause
analysis,
reformulation
strategies,
regulatory
guidelines
nitrosamines.
emphasizes
the
molecular
focusing
on
genotoxic,
mutagenic,
carcinogenic,
other
physiological
Additionally,
it
addresses
ongoing
nitrosamine
crisis,
development
nitrosamine-free
importance
sensitive
detection
methods
precise
risk
evaluation.
comprehensive
overview
will
aid
biologists,
scientists,
formulation
scientists
research
sector,
researchers
involved
management
nitrosamine-induced
promoting
safer
products.
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(23), P. 10015 - 10027
Published: May 27, 2024
Nanosilvers
with
multifarious
morphologies
have
been
extensively
used
in
many
fields,
but
their
morphology-dependent
toxicity
toward
nontarget
aquatic
organisms
remains
largely
unclear.
Herein,
we
matrix-assisted
laser
desorption/ionization
mass
spectrometry
imaging
(MALDI-MSI)
to
investigate
the
toxicological
effects
of
silver
nanomaterials
various
on
spatially
resolved
lipid
profiles
within
multiple
organs
adult
zebrafish,
especially
for
gill,
liver,
and
intestine.
Integrated
histopathology,
enzyme
activity,
accumulated
Ag
contents
amounts,
as
well
MSI
results,
found
that
nanosilvers
exhibit
nanotoxicity
by
disrupting
levels
producing
oxidative
stress.
Silver
nanospheres
(AgNSs)
had
highest
whereas
nanoflakes
(AgNFs)
exhibited
greater
than
nanowires
(AgNWs).
Levels
differential
phospholipids,
such
PC,
PE,
PI,
PS,
were
associated
nanosilver
morphology.
Notably,
AgNSs
induced
organs,
brain,
while
AgNWs
AgNFs
caused
intestine
AgNSs.
Lipid
functional
disturbance
stress
further
inflammation
membrane
damage
after
exposure
nanosilvers,
respect
sphere
Taken
together,
these
findings
will
contribute
clarifying
mechanisms
different
zebrafish.
Environmental Toxicology and Chemistry,
Journal Year:
2025,
Volume and Issue:
44(3), P. 777 - 785
Published: Jan. 6, 2025
Abstract
N-Nitrosamines
are
a
class
of
compounds
that
includes
the
potent
mutagenicity
and
carcinogenicity
many
its
members
is
distributed
widely
throughout
human
environment.
DNA
alkylation
by
their
diazonium
ions
formed
metabolically
acts
as
molecular
initiating
event
(MIE)
links
chemistry
to
mutagenicity.
However,
regiochemistry
for
reacting
with
bases
still
under
debate.
Hence,
density
functional
theory
calculations
involving
SN2
guanine
(Gua)
14
diverse
presented,
results
which
showed
mutagenicity-related
shift
from
GuaN7-
GuaO6-alkylation
proceeds
increasing
complexity
alkylating
agents,
along
greater
proportion
SN1
characteristic
in
transition
states.
“high
oxyphilic”
“low
agents
may
instead
be
“SN1”
“SN2”
species,
respectively.
As
degree
MIE
selectivity
hard−hard
interactions
can
quantified
hard
soft
acids
theory,
quantitative
relationships
were
modeled
between
nucleophilic
index
(ω-)
hydrophobicity
(log
P)
carcinogenic
potency.
Therefore,
mechanistic
link
target
toxicity
bridged
computational
chemistry.
Gut Microbes,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: Aug. 28, 2024
N-Nitrosamine
disinfection
by-products
(NAs-DBPs)
have
been
well
proven
for
its
role
in
esophageal
carcinogenesis.
However,
the
of
intratumoral
microorganisms
squamous
cell
carcinoma
(ESCC)
has
not
yet
explored
context
exposure
to
NAs-DBPs.
Here,
multi-omics
integration
reveals
Toxicological Sciences,
Journal Year:
2024,
Volume and Issue:
199(1), P. 12 - 28
Published: Jan. 30, 2024
Abstract
Intensified
sanitation
practices
amid
the
recent
severe
acute
respiratory
syndrome
coronavirus
2
(SARS-CoV-2)
outbreak
might
result
in
increased
release
of
chloramine
disinfectants
into
surface
water,
significantly
promoting
formation
nitrosamine
disinfection
by-products
(DBPs)
drinking
water.
Unfortunately,
these
DBPs
exhibit
significant
genotoxic,
carcinogenic,
and
mutagenic
properties,
whereas
chlorinating
remain
global
practice.
The
current
review
provides
valuable
insights
occurrence,
identification,
contamination
status,
exposure
limits,
toxicity
new
unregulated
(nitrosamine
DBPs)
As
a
result,
concentrations
far
exceed
allowable
limits
prolonged
has
potential
to
cause
metabolic
disorders,
critical
step
tumor
initiation
progression.
Importantly,
based
on
research,
we
have
concluded
role
nitrosamines
different
pathways.
Remarkably,
can
induce
chronic
inflammation
initiate
tumors
by
activating
sphingolipid
polyunsaturated
fatty
acid
metabolism.
Regarding
amino
nucleotide
metabolism,
inhibit
tryptophan
metabolism
de
novo
synthesis.
Moreover,
inhibition
synthesis
fails
repair
DNA
damage
induced
nitrosamines.
Additionally,
accumulation
lactate
may
act
as
pivotal
signaling
molecule
communication
within
microenvironment.
However,
with
advancement
metabolomics,
understanding
causing
cancer
inducing
abnormalities
lags
behind,
specific
mechanisms
toxic
effects
are
not
clearly
defined.
Urgently,
further
studies
exploring
this
promising
area
needed.