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5-
hydroxytryptamine
receptor 2A
Sodium-
dependent
serotonin
transporter
Voltage-
dependent
P/Q-type
calcium channel
subunit
alpha-1A
Voltage-
dependent
L-type calcium
channel subunit
beta-1
Voltage-
dependent
calcium channel
subunit
alpha-2/delta-2
Synaptic
vesicular amine
transporter
Tryptophan
5-hydroxylase 1
Aromatic-L-
amino-acid
decarboxylase
Ca
+
Serotonin
Serotonin
Lorpiprazole
Lorpiprazole
Ca
+
Serotonin
Lorpiprazole
Lorpiprazole
Lorpiprazole
L-Tryptophan
Tetrahydrobiopterin
O
2
5-Hydroxy-L-tryptophan
4a-Hydroxytetrahydrobiopterin
CO
2
Na
+
Na
+
Fe2+
Pyridoxal
5'-phosphate
Gq signaling
cascade
Synaptic Vesicle
Cytosol
Cytosol
Presynaptic Neuron
Postsynaptic Neuron
Synapse
↓ major depressive symptoms
Serotonin is synthesized at
the raphei nuclei and stored
in synaptic vesicles at the
nerve terminal
Lorpiprazole binds to 5HT2A
where it exhibits
antidepressive and
antiaggressive properties
Brain
Raphei nuclei producing
serotonergic neurons
Blood vessel -blood brain
barrier
passive diffusion
Lorpiprazole is administered
orally
Lorpiprazole is a serotonin
antagonist and reuptake
inhibitor used for the
management of major
depressive disorder
HTR2A
SLC6A4
CACNA1A
CACNB1
CACNA2D2
SLC18A2
TPH1
DDC
Calcium
Serotonin
Serotonin
Lorpiprazole
Lorpiprazole
Calcium
Serotonin
Lorpiprazole
Lorpiprazole
Lorpiprazole
L-Tryptophan
Tetrahydrobiopterin
Oxygen
5-Hydroxy-L-
tryptophan
4a-
Hydroxytetrahydrobiopterin
Carbon dioxide
Sodium
Sodium
Gq signaling
cascade
HTR2A
SLC6A4
CACNA1A
CACNB1
CACNA2D2
SLC18A2
TPH1
DDC
Ca
+
5-HT
5-HT
Lorpi
Lorpi
Ca
+
5-HT
Lorpi
Lorpi
Lorpi
Trp
BH4
O
2
5-HTP
4aHtHbp
CO
2
Na
+
Na
+
Fe2+
Pyr-5'P
Gq si c
Synaptic Vesicle
Cytosol
Cytosol
Presynaptic Neuron
Postsynaptic Neuron
Synapse
↓ major depressive symptoms
Serotonin is synthesized at
the raphei nuclei and stored
in synaptic vesicles at the
nerve terminal
Lorpiprazole binds to 5HT2A
where it exhibits
antidepressive and
antiaggressive properties
Brain
Raphei nuclei producing
serotonergic neurons
Blood vessel -blood brain
barrier
passive diffusion
Lorpiprazole is administered
orally
Lorpiprazole is a serotonin
antagonist and reuptake
inhibitor used for the
management of major
depressive disorder