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5-
hydroxytryptamine
receptor 2A
5-
hydroxytryptamine
receptor 2B
5-
hydroxytryptamine
receptor 2C
Guanine
nucleotide-
binding protein
G(i) subunit
alpha-1
Guanine
nucleotide-
binding protein
G(I)/G(S)/G(T)
subunit beta-1
Gγ
Sodium-
dependent
serotonin
transporter
Synaptic
vesicular amine
transporter
Multidrug
resistance
protein 1
Tryptophan
5-hydroxylase 1
Aromatic-L-
amino-acid
decarboxylase
5-
hydroxytryptamine
receptor 1A
Serotonin
Serotonin
Vilazodone
Vilazodone
Serotonin
Serotonin
Na
+
Na
+
Vilazodone
Vilazodone
L-Tryptophan
Tetrahydrobiopterin
O
2
5-Hydroxy-L-tryptophan
4a-Hydroxytetrahydrobiopterin
CO
2
Fe2+
Serotonin
Increase in
vagus nerve
stimulation and
electrical
impulses
suppression of
depression and
anxiety
Pyridoxal
5'-phosphate
The serotonin receptors
2A,B,C are responsible for a
variety of cognitive
abilities such as learning,
appetite, anxiety, memory,
mood and sleep.
Brain
Other mechanisms of
vilazodone include
antagonism at serotonin
5-HT1a, 5-HT1c, and 5-HT21c
receptor subtypes
Vilazodone is absorbed from
the gastrointestinal tract.
Presynaptic axon terminal
Cytosol
Synaptic Vesicle
Postsynaptic Neuron
Cytosol
Synapse
Vilazodone inhibits the
serotonin reuptake
transporter, causing
serotonin accumulation in
the synaptic cleft
Increasing activation of
serotonin receptors can
increase stimulus for
changes in downstream
effects of these receptors
affecting the mental state
of the individual
Serotonin is produced from
the Raphei nucleus
Blood vessel - Blood Brain
Barrier
At the presynaptic side,
5-HT activates
5-hydroxytryptamine
(serotonin) receptor 1A
(HTR1A), B (HTR1B), and D
(HTR1D), which results in an
attenuation of the 5-HT
exocytosis
HTR2A
HTR2B
HTR2C
GNAI1
GNB1
GNG2
SLC6A4
SLC18A2
ABCB1
TPH1
DDC
HTR1A
Serotonin
Serotonin
Vilazodone
Vilazodone
Serotonin
Serotonin
Sodium
Sodium
Vilazodone
Vilazodone
L-Tryptophan
Tetrahydrobiopterin
Oxygen
5-Hydroxy-L-
tryptophan
4a-
Hydroxytetrahydrobiopterin
Carbon dioxide
Serotonin
Increase in
vagus nerve
stimulation and
electrical
impulses
suppression of
depression and
anxiety