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Protein kinase
A
Protein kinase
A
D(2) dopamine
receptor
Adenylate
cyclase type 2
Guanine
nucleotide-
binding protein
G(i) subunit
alpha-1
Synaptic
vesicular amine
transporter
Voltage-
dependent
calcium channel
subunit
alpha-2/delta-1
Voltage-
dependent
calcium channel
subunit
alpha-2/delta-2
Voltage-
dependent
N-type calcium
channel subunit
alpha-1B
Sodium-
dependent
dopamine
transporter
Solute carrier
family 22
member 5
Tyrosine
3-monooxygenase
Aromatic-L-
amino-acid
decarboxylase
cAMP
Ca
+
Dopamine
Dopamine
Pramipexole
Dopamine
Ca
+
Pramipexole
Pramipexole
L-Tyrosine
L-Dopa
CO
2
ATP
PP
i
Na
+
Na
+
Fe2+
Pyridoxal
5'-phosphate
Neuronal
Excitability
Magnesium
Activation of D2 dopamine
receptors activates the Gi
signalling cascade which
leads to increased cAMP.
Pramipexole is an agonist at
D2 and D3 receptors
Presynaptic Neuron
Cytosol
Synaptic Vesicle
Postsynaptic Neuron
Cytosol
Dopamine is produced in the
Ventral Tegmental Area of
the brain
Prefrontal Cortex
Synapse
Blood vessel - Blood Brain
Barrier
Brain
PRKAR1A
PRKAR1B
DRD2
ADCY2
GNAI1
SLC18A2
CACNA2D1
CACNA2D2
CACNA1B
SLC6A3
SLC22A5
TH
DDC
cAMP
Calcium
Dopamine
Dopamine
Pramipexole
Dopamine
Calcium
Pramipexole
Pramipexole
L-Tyrosine
L-Dopa
Carbon dioxide
Adenosine
triphosphate
Pyrophosphate
Sodium
Sodium
Neuronal
Excitability
PRKAR1A
PRKAR1B
DRD2
ADCY2
GNAI1
SLC18A2
CACNA2D1
CACNA2D2
CACNA1B
SLC6A3
SLC22A5
TH
DDC
cAMP
Ca
+
LDP
LDP
Pramipe
LDP
Ca
+
Pramipe
Pramipe
Tyr
L-Dopa
CO
2
ATP
PP
i
Na
+
Na
+
Fe2+
Pyr-5'P
Neu Exc
Mg2+
Activation of D2 dopamine
receptors activates the Gi
signalling cascade which
leads to increased cAMP.
Pramipexole is an agonist at
D2 and D3 receptors
Presynaptic Neuron
Cytosol
Synaptic Vesicle
Postsynaptic Neuron
Cytosol
Dopamine is produced in the
Ventral Tegmental Area of
the brain
Prefrontal Cortex
Synapse
Blood vessel - Blood Brain
Barrier
Brain