1B CNS: Depression Flashcards
theories of depression (3)
amine hypothesis
neutrophic hypothesis
endocrine factors
Neurotransmitter of Wakefulness and Mania
noradrenaline
Neurotransmitter of Sleep, Mood, Feeding & Appetite
serotonin
block the reuptake of serotonin and norepinephrine in presynaptic terminals, which
leads to increased concentration of these neurotransmitters in the synaptic cleft
TCA
act as competitive antagonists on post-synaptic alpha (alpha1 and alpha2),
cholinergic muscarinic, and histaminergic receptor
TCA
mitochondrial enzyme involved in the oxidative deamination of biogenic amines (Adr, NA, DA,
5-HT).
MAO
Preferentially deaminates 5-HT and NA,
MAO A
Preferentially deaminates phenylethylamine
MAO B
It is a reversible and selective MAO-A inhibitor with short duration of
action; full MAO activity is restored within 1–2 days of stopping the drug.
Moclobemide
This tetracyclic compound is unusual in that it blocks
dopamine D2 receptors in addition to inhibiting NA
reuptake.
AMOXAPINE
This is a newer selective NA reuptake blocker with weak effect
on 5-HT reuptake
REBOXETINE
A bicyclic compound, is the first SSRI to be introduced, and the longest acting.
► Its plasma t½ is 2 days and that of its active demethylated metabolite is 7–10 days.
FLUOXETINE
It is a shorter-acting SSRI with a t½ of 18 hours and no active metabolite,
which has been specifically recommended for generalized anxiety
disorder and OCD, rather than for depression
FLUVOXAMINE
It is a shorter-acting SSRI with a t½ of 18 hours and no active metabolite,
which has been specifically recommended for generalized anxiety
disorder and OCD, rather than for depression.
FLUVOXAMINE
Efficacy in juvenile depression has been demonstrated, and it is
recommended for anxiety and post-traumatic stress disorder (PTSD) as
well.
SERTRALINE