Annals of the New York Academy of Sciences,
Journal Year:
2010,
Volume and Issue:
1187(1), P. 4 - 34
Published: Jan. 8, 2010
Repeated
exposure
to
drugs
of
abuse
produces
long‐term
molecular
and
neurochemical
changes
that
may
explain
the
core
features
addiction,
such
as
compulsive
seeking
taking
drug,
well
risk
relapse.
A
growing
number
new
cellular
targets
addictive
have
been
identified,
rapid
advances
are
being
made
in
relating
those
specific
behavioral
phenotypes
animal
models
addiction.
In
this
context,
pattern
expression
dopamine
(DA)
D
3
receptor
rodent
human
brain
response
contributed
primarily
direct
research
efforts
toward
development
selective
DA
antagonists.
Growing
preclinical
evidence
indicates
these
compounds
actually
regulate
motivation
self‐administer
disrupt
drug‐associated
cue‐induced
craving.
This
report
will
be
divided
into
three
parts.
First,
support
efficacy
antagonists
drug
addiction
reviewed.
The
effects
mixed
2
/D
not
discussed
here
because
most
low
selectivity
at
versus
receptor,
their
profile
is
related
functional
antagonism
receptors
possibly
interactions
with
other
neurotransmitter
systems.
Second,
major
medicinal
chemistry
for
identification
optimization
partial
agonists
analyzed.
Third,
translational
from
studies
so‐called
proof‐of‐concept
indications
discussed.
Addiction Biology,
Journal Year:
2007,
Volume and Issue:
12(3-4), P. 227 - 462
Published: July 30, 2007
ABSTRACT
Conditioned
place
preference
(CPP)
continues
to
be
one
of
the
most
popular
models
study
motivational
effects
drugs
and
non‐drug
treatments
in
experimental
animals.
This
is
obvious
from
a
steady
year‐to‐year
increase
number
publications
reporting
use
this
model.
Since
compilation
preceding
review
1998,
more
than
1000
new
studies
using
conditioning
have
been
published,
aim
present
provide
an
overview
these
recent
publications.
There
are
trends
developments
that
literature
last
decade.
First,
as
knockout
transgenic
animals
become
available,
increasingly
used
assess
or
rewards
genetically
modified
Second,
there
still
small
but
growing
on
aspects
pain,
field
pre‐clinical
research
has
so
far
received
little
attention,
because
lack
appropriate
animal
models.
Third,
widely
tolerance
sensitization
rewarding
induced
by
pre‐treatment
regimens.
Fourth,
extinction/reinstatement
procedures
becoming
popular.
interesting
approach
thought
model
certain
relapse
addictive
behavior
previously
almost
exclusively
studied
drug
self‐administration
paradigms.
It
now
also
established
provides
additional
technically
easy
important
phenomenon.
The
enormous
covered
prevented
in‐depth
discussion
many
methodological,
pharmacological
neurobiological
aspects;
large
extent,
presentation
data
had
limited
short
condensed
summary
relevant
findings.
Physiological Reviews,
Journal Year:
2009,
Volume and Issue:
89(4), P. 1379 - 1412
Published: Sept. 29, 2009
The
opioid
system
consists
of
three
receptors,
mu,
delta,
and
kappa,
which
are
activated
by
endogenous
peptides
processed
from
protein
precursors,
proopiomelanocortin,
proenkephalin,
prodynorphin.
Opioid
receptors
recruited
in
response
to
natural
rewarding
stimuli
drugs
abuse,
both
opioids
their
modified
as
addiction
develops.
Mechanisms
whereby
aberrant
activation
modifications
the
contribute
drug
craving
relapse
remain
be
clarified.
This
review
summarizes
our
present
knowledge
on
brain
sites
where
controls
hedonic
responses
is
abuse
rodent
brain.
We
1)
latest
data
anatomy
system,
2)
consequences
local
intracerebral
pharmacological
manipulation
reinforced
behaviors,
3)
gene
knockout
behaviors
dependence,
4)
chronic
exposure
expression
levels
genes.
Future
studies
will
establish
key
molecular
actors
neural
onset
addictive
disorders.
Combined
with
human
nonhuman
primate
(not
reviewed
here),
research
this
extremely
active
field
has
implications
for
understanding
biology
therapeutic
interventions
treat
disorder.
Learning & Memory,
Journal Year:
2009,
Volume and Issue:
16(5), P. 279 - 288
Published: April 20, 2009
Extinction
is
a
form
of
inhibitory
learning
that
suppresses
previously
conditioned
response.
Both
fear
and
drug
seeking
are
responses
can
lead
to
maladaptive
behavior
when
expressed
inappropriately,
manifesting
as
anxiety
disorders
addiction,
respectively.
Recent
evidence
indicates
the
medial
prefrontal
cortex
(mPFC)
critical
for
extinction
both
drug-seeking
behaviors.
Moreover,
dorsal-ventral
distinction
apparent
within
mPFC,
such
prelimbic
(PL-mPFC)
drives
expression
seeking,
whereas
infralimbic
(IL-mPFC)
these
behaviors
after
extinction.
For
fear,
dichotomy
accomplished
via
divergent
projections
different
subregions
amygdala,
it
nucleus
accumbens.
Given
mPFC
represents
common
node
in
circuit
behaviors,
treatments
target
this
region
may
help
alleviate
symptoms
addictive
by
enhancing
memory.
Pharmacological Reviews,
Journal Year:
2011,
Volume and Issue:
63(2), P. 348 - 365
Published: April 13, 2011
Repeated
exposure
to
drugs
of
abuse
enhances
the
motor-stimulant
response
these
drugs,
a
phenomenon
termed
behavioral
sensitization.
Animals
that
are
extinguished
from
self-administration
training
readily
relapse
drug,
conditioned
cue,
or
stress
priming.
The
involvement
sensitization
in
reinstated
drug-seeking
behavior
remains
controversial.
This
review
describes
and
drug
seeking
as
events,
neural
circuitry,
neurochemistry,
neuropharmacology
underlying
both
models
will
be
described,
compared,
contrasted.
It
seems
although
reinstatement
involve
overlapping
circuitry
neurotransmitter
receptor
systems,
role
ill-defined.
Nevertheless,
it
is
argued
useful
model
for
determining
basis
addiction,
an
example
provided
which
data
studies
led
potential
pharmacotherapies
have
been
tested
animal
human
addicts.
Pharmacological Reviews,
Journal Year:
2016,
Volume and Issue:
68(3), P. 816 - 871
Published: June 30, 2016
The
nucleus
accumbens
is
a
major
input
structure
of
the
basal
ganglia
and
integrates
information
from
cortical
limbic
structures
to
mediate
goal-directed
behaviors.
Chronic
exposure
several
classes
drugs
abuse
disrupts
plasticity
in
this
region,
allowing
drug-associated
cues
engender
pathologic
motivation
for
drug
seeking.
A
number
alterations
glutamatergic
transmission
occur
within
after
withdrawal
chronic
exposure.
These
drug-induced
neuroadaptations
serve
as
molecular
basis
relapse
vulnerability.
In
review,
we
focus
on
role
that
glutamate
signal
transduction
plays
addiction-related
First,
explore
accumbens,
including
cell
types
neuronal
populations
present
well
afferent
efferent
connections.
Next
discuss
rodent
models
addiction
assess
viability
these
testing
candidate
pharmacotherapies
prevention
relapse.
Then
provide
review
literature
describing
how
synaptic
altered
also
pharmacological
manipulation
systems
can
inhibit
seeking
laboratory
setting.
Finally,
examine
results
clinical
trials
which
designed
manipulate
have
been
effective
treating
human
patients.
Further
elucidation
alter
will
be
necessary
development
new
therapeutics
treatment
across
all
addictive
substances.