Cerebral Cortex,
Journal Year:
2023,
Volume and Issue:
33(13), P. 8273 - 8285
Published: April 1, 2023
Brain
network
dynamics
not
only
endow
the
brain
with
flexible
coordination
for
various
cognitive
processes
but
also
a
huge
potential
of
neuroplasticity
development,
skill
learning,
and
after
cerebral
injury.
Diffusive
progressive
glioma
infiltration
triggers
functional
compensation,
which
is
an
outstanding
pathophysiological
model
investigation
reorganization
underlying
neuroplasticity.
In
this
study,
we
employed
dynamic
conditional
correlation
to
construct
framewise
language
networks
investigated
reorganizations
in
83
patients
left
hemispheric
gliomas
involving
(40
without
aphasia
43
aphasia).
We
found
that,
healthy
controls
(HCs)
patients,
resting
state
clustered
into
4
temporal-reoccurring
states.
Language
deficits-severity-dependent
topological
abnormalities
dFCs
were
observed.
Compared
HCs,
suboptimal
observed
those
aphasia,
while
more
severe
disruptions
aphasia.
Machine
learning-based
dFC-linguistics
prediction
analyses
showed
that
states
significantly
predicted
individual
patients'
scores.
These
findings
shed
light
on
our
understanding
metaplasticity
glioma.
Glioma-induced
under
"meta-networking"
(network
networks)
framework.
glioma,
resting-state
robustly
The
spatial
temporal
network.
Humans
have
an
extraordinary
ability
to
create
evolutionarily
novel
knowledge,
such
as
writing
systems
and
mathematics.This
accumulated
knowledge
over
several
millennia
supports
large,
dynamic
societies
that
now
require
children
learn
this
in
educational
settings.This
Element
provides
a
framework
for
understanding
the
evolution
of
brain
enable
innovation
learning
how
these
can
act
on
human
cognitive
universals,
language,
abilities,
reading
writing.Critical
features
networks
include
top-down
control
attention,
which
is
central
formation
well
self-awareness
mental
time
travel
support
academic
self-concepts
generation
long-term
goals.The
basics
are
reviewed
updated
here,
implications
instructional
practices.
Brain,
Journal Year:
2024,
Volume and Issue:
147(8), P. 2718 - 2731
Published: April 22, 2024
Accumulating
evidence
suggests
that
the
brain
exhibits
a
remarkable
capacity
for
functional
compensation
in
response
to
neurological
damage,
resilience
potential
is
deeply
rooted
malleable
features
of
its
underlying
anatomofunctional
architecture.
This
propensity
particularly
exemplified
by
diffuse
low-grade
glioma,
subtype
primary
tumour.
However,
plasticity
not
boundless,
and
surgical
resections
directed
at
structures
with
limited
neuroplasticity
can
lead
incapacitating
impairments.
Yet,
maximizing
glioma
offers
substantial
oncological
benefits,
especially
when
resection
extends
beyond
tumour
margins
(i.e.
supra-tumour
or
supratotal
resection).
In
this
context,
objective
study
was
identify
which
cerebral
were
associated
less
favourable
cognitive
outcomes
after
surgery,
while
accounting
intra-tumour
resections.
To
achieve
objective,
we
leveraged
unique
cohort
400
patients
who
underwent
surgery
awake
mapping.
Patients
benefitted
from
neuropsychological
assessment
consisting
18
subtests
administered
before
3
months
surgery.
We
analysed
changes
performance
applied
topography-focused
disconnection-focused
multivariate
lesion-symptom
mapping
using
support
vector
regressions,
an
attempt
capture
resected
cortico-subcortical
amenable
full
compensation.
The
observed
magnitude,
suggesting
overall
recovery
(13
tasks
recovered
fully
despite
mean
extent
92.4%).
Nevertheless,
analyses
revealed
lack
picture
naming
linked
damage
left
inferior
temporal
gyrus
longitudinal
fasciculus.
Likewise,
semantic
fluency
abilities,
association
established
precuneus/posterior
cingulate.
For
phonological
dorsomedial
frontal
cortex
aslant
tract
implicated.
Moreover,
difficulties
spatial
exploration
injury
right
prefrontal
connectivity.
An
exploratory
analysis
suggested
pronounced
following
specific
patterns,
such
as
uncinate
fasciculus
(picture
naming),
corticostriatal
anterior
corpus
callosum
(phonological
fluency),
hippocampus
parahippocampus
(episodic
memory)
frontal-mesial
areas
(visuospatial
exploration).
Collectively,
these
patterns
results
shed
new
light
on
both
low-resilient
neural
systems
prediction
Furthermore,
they
indicate
only
occasionally
well
tolerated
viewpoint.
doing
so,
have
deep
implications
planning
rehabilitation
strategies.
Frontiers in Chemistry,
Journal Year:
2024,
Volume and Issue:
12
Published: Feb. 9, 2024
Proper
neurological
function
relies
on
the
cellular
and
molecular
microenvironment
of
brain,
with
perturbations
this
environment
leading
to
disorders.
However,
studying
microenvironments
tissue
has
proven
difficult
because
its
inherent
complexity.
Both
cell
type
metabolomic
underpinnings
have
crucial
functional
roles,
thus
making
multimodal
characterization
methods
key
acquiring
a
holistic
view
brain’s
microenvironment.
This
study
investigates
for
combining
matrix-assisted
laser
desorption/ionization
mass
spectrometry
imaging
(MALDI
MSI)
immunofluorescence
(IF)
microscopy
enable
concurrent
investigation
types
lipid
profiles
same
sample.
In
brief,
1,5-diaminonaphthalene
(DAN),
α-cyano-4-hydroxy-cinnamic
acid
(CHCA),
2,5-dihydroxybenzoic
(DHB)
were
tested
in
addition
instrument-specific
parameters
compatibility
IF.
Alternatively,
effects
IF
protocols
MALDI
MSI
also
tested,
showing
significant
signal
loss
all
permutations.
Ultimately,
use
CHCA
resulted
best
images,
while
DAN
gave
lowest
quality
images.
Overall,
increasing
power
number
shots
per
burst
most
ablation.
optimized
parameter
settings
allowed
minimal
ablation
maintaining
sufficient
signal.
Brain,
Journal Year:
2024,
Volume and Issue:
147(8), P. 2621 - 2635
Published: April 4, 2024
Determining
preoperatively
the
maximal
extent
of
resection
that
would
preserve
cognitive
functions
is
core
challenge
brain
tumour
surgery.
Over
past
decade,
methodological
framework
to
achieve
this
goal
has
been
thoroughly
renewed:
population-level
topographically-focused
voxel-based
lesion-symptom
mapping
progressively
overshadowed
by
machine
learning
(ML)
algorithmics,
in
which
problem
framed
as
predicting
outcomes
a
patient-specific
manner
from
typically
large
set
variables.
However,
choice
these
predictors
utmost
importance,
they
should
be
both
informative
and
parsimonious.
In
perspective,
we
first
introduce
concept
connectotomy:
instead
parameterizing
topography
through
status
(intact/resected)
huge
number
voxels
(or
parcels)
paving
whole
Cartesian
3D-space,
connectotomy
models
connectivity
space,
computing
handful
networks
disconnection
indices,
measuring
how
structural
sustaining
each
network
interest
was
hit
resection.
This
connectivity-informed
reduction
dimensionality
necessary
step
for
efficiently
implementing
ML
tools,
given
relatively
small
patient-examples
available
training
datasets.
We
further
argue
two
other
major
sources
interindividual
variability
must
considered
improve
accuracy
with
are
predicted:
underlying
structure-function
phenotype
neuroplasticity,
provide
an
in-depth
review
propose
new
ways
determining
relevant
predictors.
finally
discuss
benefits
our
approach
precision
surgery
glioma.
Frontiers in Oncology,
Journal Year:
2022,
Volume and Issue:
12
Published: March 2, 2022
For
many
decades,
interactions
between
diffuse
lower-grade
glioma
(LGG)
and
brain
connectome
were
neglected.
However,
the
neoplasm
progression
is
intimately
linked
to
its
environment,
especially
white
matter
(WM)
tracts
their
myelin
status.
First,
while
etiopathogenesis
of
LGG
unclear,
this
tumor
seems
appear
during
adolescence,
it
mostly
located
within
anterior
associative
cerebral
areas.
Because
these
structures
correspond
those
which
myelinated
later
in
maturation
process,
WM
myelination
could
play
a
role
development
LGG.
Second,
fibers
characteristics
also
participate
diffusion,
since
cells
migrate
along
subcortical
pathways,
when
exhibiting
demyelinated
phenotype,
may
result
large
invasion
parenchyma.
Third,
such
migratory
pattern
can
induce
functional
(neurological,
cognitive
behavioral)
disturbances,
because
represent
main
limitation
neuroplastic
potential.
These
parameters
are
critical
for
tailoring
an
individualized
therapeutic
strategy,
both
(i)
regarding
timing
active
treatment(s)
must
be
proposed
earlier,
before
too
wide
infiltration
bundles,
(ii)
anatomic
extent
surgical
resection
irradiation,
should
take
account
connectivity.
Therefore,
new
science
connectomics
integrated
management,
based
upon
improved
understanding
interplay
across
dissemination
reactional
neural
networks
reconfiguration,
order
optimize
long-term
oncological
outcomes.
To
end,
mechanisms
activity-dependent
plasticity
better
investigated.
Neurosurgery,
Journal Year:
2022,
Volume and Issue:
91(1), P. 182 - 190
Published: April 21, 2022
Asleep
vs
awake
surgery
for
right
insula-centered
low-grade
glioma
(LGG)
is
still
debated.To
compare
neurological
outcomes
and
return
to
work
after
resection
insular/paralimbic
LGG
performed
without
with
mapping.A
personal
surgical
experience
of
was
analyzed,
by
comparing
2
consecutive
periods.
In
the
first
period
(group
1),
patients
underwent
asleep
motor
mapping.
second
2),
intraoperative
mapping
movement
cognitive
functions.This
series
included
143
LGGs:
41
in
group
1
(1999-2009)
102
(2009-2020).
There
were
no
significant
difference
concerning
preoperative
clinicoradiological
characteristics
histopathology
results
between
both
groups.
Intraoperative
positive
all
cases
1.
2,
beyond
mapping,
somatosensory,
visuospatial,
language,
and/or
functions
identified
during
cortical-subcortical
stimulation.
Postoperatively,
3
experienced
a
long-lasting
deterioration
hemiparesis
due
deep
stroke
(1.3%)
severe
depressive
syndrome,
them
none
(P
=
.022).
The
rate
RTW
81.5%
95.5%
.016).
tumor
volume
extent
did
not
significantly
differ
across
groups.This
study
LGG.
Despite
similar
resection,
functional
better
avoiding
permanent
impairment
increasing
RTW.
These
support
higher-order
procedure.
Radiology,
Journal Year:
2023,
Volume and Issue:
308(3)
Published: Sept. 1, 2023
Since
its
discovery
in
the
early
1990s,
functional
MRI
(fMRI)
has
been
used
to
study
human
brain
function.
One
well-established
application
of
fMRI
clinical
setting
is
neurosurgical
planning
patients
with
tumors
near
eloquent
cortical
areas.
Clinical
aims
preoperatively
identify
cortices
that
serve
essential
functions
daily
life,
such
as
hand
movement
and
language.
The
primary
goal
neurosurgery
maximize
tumor
resection
while
sparing
adjacent
tumor.
When
a
lesion
presents
vicinity
an
cortex,
surgeons
may
use
plan
their
best
surgical
approach
by
determining
proximity
regions
activation,
providing
guidance
for
awake
surgery
intraoperative
mapping.
acquisition
requires
patient
preparation
prior
imaging,
determination
paradigms,
monitoring
performance,
both
processing
analysis
images.
Interpretation
maps
strong
understanding
neuroanatomy
familiarity
technical
limitations
frequently
present
including
neurovascular
uncoupling,
compliance,
data
analysis.
This
review
discusses
neuro-oncology,
relevant
ongoing
research
topics,
prospective
future
developments
this
exciting
discipline.