RSC Chemical Biology,
Journal Year:
2023,
Volume and Issue:
4(8), P. 548 - 563
Published: Jan. 1, 2023
Neurodegeneration
is
characterized
by
a
disturbance
in
neurotransmitter-mediated
signaling
pathways.
Recent
studies
have
highlighted
the
significant
role
of
transition
metal
ions,
including
Cu(i/ii),
Zn(ii),
and
Fe(ii/iii),
neurotransmission,
thereby
making
coordination
chemistry
neurotransmitters
growing
field
interest
understanding
signal
dysfunction.
This
review
outlines
physiological
functions
ions
neurotransmitters,
with
metal-binding
properties
small
molecule-based
neuropeptides.
Additionally,
we
discuss
structural
conformational
changes
induced
redox-active
such
as
Cu(i/ii)
briefly
describe
outcomes
arising
from
their
oxidation,
polymerization,
aggregation.
These
observations
important
implications
for
neurodegeneration
emphasize
need
further
research
to
develop
potential
therapeutic
strategies.
International Clinical Psychopharmacology,
Journal Year:
2024,
Volume and Issue:
40(1), P. 3 - 26
Published: Feb. 6, 2024
This
review
synthesizes
the
evidence
on
associations
between
antidepressant
use
and
gut
microbiota
composition
function,
exploring
microbiota's
possible
role
in
modulating
treatment
outcomes.
Antidepressants
exert
an
influence
measures
of
microbial
diversity.
The
most
consistently
reported
differences
were
β-diversity
those
exposed
to
antidepressants
not
exposed,
with
longitudinal
studies
supporting
a
potential
causal
association.
Compositional
alterations
users
include
increase
Bacteroidetes
phylum,
Christensenellaceae
family,
Bacteroides
Clostridium
genera,
while
decrease
was
found
Firmicutes
Ruminococcaceae
Ruminococcus
genus.
In
addition,
attenuate
depressed
healthy
individuals,
modulate
serotonin
transport,
metabolic
functions.
These
lyxose
degradation,
peptidoglycan
maturation,
membrane
methylerythritol
phosphate
pathways,
alongside
gamma-aminobutyric
acid
metabolism.
Importantly,
baseline
increased
α-diversity
abundance
Roseburia
Faecalibacterium
are
associated
response,
emerging
as
promising
biomarkers.
highlights
for
predictor
response
emphasizes
need
further
research
elucidate
mechanisms
underlying
antidepressant-microbiota
interactions.
More
homogeneous
standardized
techniques
required
confirm
these
initial
findings.
Frontiers in Immunology,
Journal Year:
2024,
Volume and Issue:
15
Published: May 16, 2024
Importance
Research
is
beginning
to
elucidate
the
sophisticated
mechanisms
underlying
microbiota-gut-brain-immune
interface,
moving
from
primarily
animal
models
human
studies.
Findings
support
dynamic
relationships
between
gut
microbiota
as
an
ecosystem
(microbiome)
within
(host)
and
its
intersection
with
host
immune
nervous
systems.
Adding
this
effects
on
epigenetic
regulation
of
gene
expression
further
complicates
strengthens
response.
At
heart
inflammation,
which
manifests
in
a
variety
pathologies
including
neurodegenerative
diseases
such
Alzheimer’s
disease,
Parkinson’s
Multiple
Sclerosis
(MS).
Observations
Generally,
research
date
limited
has
focused
bacteria,
likely
due
simplicity
cost-effectiveness
16s
rRNA
sequencing,
despite
lower
resolution
inability
determine
functional
ability/alterations.
However,
omits
all
other
fungi,
viruses,
phages,
are
emerging
key
members
microbiome.
Much
been
done
pre-clinical
and/or
small
studies
more
developed
parts
world.
The
observed
promising
but
cannot
be
considered
reliable
or
generalizable
at
time.
Specifically,
causal
determined
currently.
More
followed
by
then
little
MS.
data
for
MS
encouraging
this.
Conclusions
relevance
While
still
nascent,
interface
may
missing
link,
hampered
our
progress
understanding,
let
alone
preventing,
managing,
putting
into
remission
diseases.
Relationships
must
first
established
humans,
have
shown
poorly
translate
complex
physiology
environments,
especially
when
investigating
microbiome
where
often
overly
simplistic.
Only
can
robust
conducted
humans
using
mechanistic
model
Gut Microbes,
Journal Year:
2025,
Volume and Issue:
17(1)
Published: Jan. 24, 2025
The
interplay
between
the
gut
microbiota
and
gastrointestinal
hormones
plays
a
pivotal
role
in
health
of
host
development
diseases.
As
vital
component
intestinal
microecosystem,
influences
synthesis
release
many
through
mechanisms
such
as
modulating
environment,
producing
metabolites,
impacting
mucosal
barriers,
generating
immune
inflammatory
responses,
releasing
neurotransmitters.
Conversely,
exert
feedback
regulation
on
by
nutrient
absorption
utilization,
bacterial
biological
behavior
composition.
distributions
are
anatomically
intertwined,
close
interactions
crucial
for
maintaining
homeostasis.
Interventions
leveraging
have
been
employed
clinical
management
metabolic
diseases
bowel
diseases,
bariatric
surgery
fecal
transplantation,
offering
promising
targets
treatment
dysbiosis-related
Nutrients,
Journal Year:
2025,
Volume and Issue:
17(3), P. 442 - 442
Published: Jan. 25, 2025
Background:
Over
the
past
decade,
probiotics
have
gained
increasing
recognition
for
their
health
benefits
to
host.
While
most
research
has
focused
on
therapeutic
effects
of
in
treatment
various
diseases,
recent
years
seen
a
shift
towards
exploring
role
enhancing
and
supporting
overall
health.
Methods:
In
this
work,
we
studied
novel
potential
probiotic
strain,
Lactiplantibacillus
pentosus
PE11,
healthy
mice
following
six-week
dietary
intervention.
The
assessment
included
monitoring
general
animals,
biochemical
analyses,
profiling
gut
fecal
microbial
communities,
gene
expression
analysis.
Results:
Our
results
showed
that
administration
PE11
led
changes
composition
microbiome,
specifically
an
increase
Firmicutes/Bacteroidetes
ratio
relative
abundance
Lachnospiraceae,
Ruminococcaceae,
Rikenellaceae
families.
Reduced
Tnf
elevated
Zo1
were
also
observed
cecum,
pointing
anti-inflammatory
properties
improved
intestinal
barrier
integrity.
Additionally,
significant
reduction
triglycerides
alanine
aminotransferase
levels—within
physiological
ranges—was
observed,
along
with
trend
toward
decreased
total
cholesterol
levels.
Conclusions:
These
findings
suggest
mice,
positively
influence
microbiome
structure
metabolism,
thereby
Nutrients,
Journal Year:
2023,
Volume and Issue:
15(4), P. 847 - 847
Published: Feb. 7, 2023
The
elderly
often
suffer
from
sleep
disorders
and
depression,
which
contribute
to
mood
disorders.
In
our
previous
work,
we
showed
that
individuals
with
had
a
lower
intake
of
TRP
recommended
TRP-based
dietary
intervention
improve
the
mental
state
such
individuals.
this
assessed
impact
TRP-rich
diet
on
of,
metabolism
in,
Forty
depression
an
equal
number
subjects
without
were
enrolled
in
study.
was
evaluated
nutrition
calculator.
Patients
than
their
normal
counterparts
received
content
25
mg
per
kilogram
body
day
for
12
weeks.
before
after
Hamilton
Depression
Rating
Scale
(HAM-D)
Insomnia
Severity
Index
(ISI).
At
those
times,
urinary
levels
its
metabolites
5-hydroxyindoleacetic
acid
(5-HIAA),
L-kynurenine
(KYN),
kynurenic
(KYNA),
quinolinic
(QA)
determined
by
liquid
chromatography
tandem
mass
spectrometry
related
creatinine
level.
After
intervention,
score
ISI
HAM-D
decreased
more
half.
A
correlation
analysis
reveals
TRP,
5-HIAA,
KYNA
might
have
anti-depressive
action,
while
KYN
QA—pro-depressive.
urine
disorder
patients
increased,
QA
decreased.
conclusion,
consumption
adequate
amount
tryptophan
has
beneficial
effect
health
improves
amino
acid.
Therefore,
TRP-enriched
may
be
considered
as
component
treatment
International Journal of Molecular Sciences,
Journal Year:
2022,
Volume and Issue:
23(24), P. 15632 - 15632
Published: Dec. 9, 2022
Inflammatory
Bowel
Disease
(IBD)
is
a
chronic
gastrointestinal
disorder
characterized
by
periods
of
activity
and
remission.
IBD
includes
Crohn’s
disease
(CD)
ulcerative
colitis
(UC),
even
though
has
not
been
considered
as
heritable
disease,
there
are
genetic
variants
associated
with
increased
risk
for
the
disease.
5-Hydroxytriptamine
(5-HT),
or
serotonin,
exerts
wide
range
effects
under
both
normal
pathological
conditions.
Furthermore,
Serotonin
Transporter
(SERT)
coded
Solute
Carrier
Family
6
Member
4
(SLC6A4)
gene
(located
in
17q11.1-q12
chromosome),
possesses
variants,
such
Gene
Variable
Number
Tandem
Repeat
Intron
2
(STin2-VNTR)
Serotonin-Transporter-linked
promoter
region
(5-HTTLPR),
which
have
an
influence
over
functionality
SERT
re-uptake
bioavailability
serotonin.
The
intestinal
microbiota
crucial
actor
human
gut
physiology,
exerting
on
function,
inflammatory
processes.
As
consequence
abnormal
serotonin
signaling
function
these
processes,
use
selective
inhibitors
(SSRIs)
seen
to
improve
extraintestinal
manifestations,
depression
anxiety.
aim
this
study
integrate
scientific
data
linking
regulator
re-uptake,
well
its
role
pathogenesis
IBD.
We
performed
narrative
review,
including
literature
search
PubMed
database
review
original
articles
(no
date
restriction),
information
about
SLC6A4
obtained
from
Ensembl
website.
Scientific
evidence
vitro,
vivo,
clinical
trials
regarding
reuptake
adjuvant
therapy
patients
also
discussed.
A
total
194
were
used
between
reviews,
vitro
studies,
trials.
Nutrients,
Journal Year:
2023,
Volume and Issue:
15(5), P. 1262 - 1262
Published: March 3, 2023
(1)
Background:
L-tryptophan
is
a
substrate
for
the
synthesis
of
many
biological
compounds
through
serotonin
and
kynurenine
pathways.
These
have
significant
influence
on
gastrointestinal
functions
mental
processes.
The
aim
study
was
to
evaluate
urinary
excretion
selected
tryptophan
metabolites
in
patients
with
constipation-predominant
diarrhoea-predominant
irritable
bowel
syndrome
(IBS-C
IBS-D,
respectively),
related
somatic
symptoms.
(2)
Methods:
120
people
were
included
three
groups
distinguished,
40
individuals
each,
including
healthy
subjects
(controls),
IBS-C
IBS-D.
Gastrointestinal
Symptoms
Rating
Scale
(GSRS-IBS)
used
assess
severity
abdominal
Hamilton
Anxiety
(HAM-A)
Depression
(HAM-D)
state
patients.
Using
liquid
chromatography
tandem
mass
spectrometry
(LC-MS/MS),
following
urine,
creatinine
level,
measured:
5-hydroxyindoleacetic
acid
(5-HIAA),
(KYN),
kynurenic
(KYNA)
quinolinic
(QA).
(3)
Results:
In
both
IBS,
changes
metabolism
found
as
compared
control
group.
We
observed
an
increase
activity
pathway
positive
correlation
between
5-HIAA
level
GSRS
score
(p
<
0.01)
HAM-A
0.001)
IBS-D
group
characterized
by
higher
concentration
kynurenines
(KYN,
QA)
urine.
Moreover,
QA
KYNA
0.05)
levels
correlated
HAM-D
among
(4)
Conclusions:
Various
can
determine
differences
clinical
picture
syndrome.
results
should
be
nutritional
pharmacological
treatment
this