Depression Flashcards
With what drug can you not eat cheese?
MAO inhibitor antidepressants
What antidepressant is used for tobacco withdrawl?
bupropion
Clinically characterized by low self- esteem, anxiety and sadness as predominant symptoms
depression
psychomotor retardation and some typical somatic manifestations
depression
one of the most common psychiatric illnesses
depression
depression is more common in this gender:
females
depression has an abnormality in these neurotransmitters: (2)
- serotonin
- noradrenaline
the most serious form of cyclical depression with periods of normality is
primary depression
What causes secondary depression? (3)
- strokes
- parkinson’s disease
- hormonal disorders
What causes reactive depression? whats the prognosis?
stressful life situations
-high intensity but good prognosis
Mechanism of action for antidepressants? (2)
- By inhibiting the action of MAO
2. Blocking or delaying the reuptake of NT
How long does depression medication need to be taken before it is known if it is effective or not
2-4 weeks
How long do we prescribe antidepressives for?
4-6 months
is withdrawl possible with antidepressants?
yes with possible relapse
MAO-A location
intestine
MAO-B location
brain
what is MAO?
monoaminoxidase - enzyme that metabolizes noradrenaline and serotonin
What are the two mechanism types of antidepressants?
- reuptake inhibitors
- MAO inhibitors
Which antidepressant classes are the reuptake inhibitors? (3)
- tricyclic antidepressants
- selective serotonin reuptake inhibitors
- other antidepressants
What are the tricyclic antidepressants? (2)
- AMITRIPTYLINE
- IMIPRAMINE
What are the other antidepressants? (2)
VENLAFAXINE
DULOXETINE
First used to treat depression starting in the sixties
TRICYCLIC ANTIDEPRESSANTS
the reuptake inhibitor drugs act on which nuerotransmitters?
- noradrenaline
- serotonin
tricyclic antidepressants mechanism of action? (6)
blocks:
- reuptake of noradrenaline and serotonin
- noradrenergic receptors (α1 and α2)
- histamine H1
- cholinergic (M)
- dopamine (d2)
- serotonin (5-ht2) -side effects
mood improvement in tricyclic antidepressants takes how long?
2-3 weeks
tricyclic antidepressants do NOT cause… (2)
euphoria
addiction
tricyclic antidepressants indications? (3)
- pain at night (sedative effect - adjuvant analgesic)
- nocturnal enuresis
- anorexia
- migrane prophylaxis
What is nocturnal enuresis?
involuntary urination that happens at night while sleeping
Which antidepressant is an adjuvant analgesic?
tricyclic antidepressants
tricyclic antidepressants route of administration?
oral
tricyclic antidepressants half life?
10-20 hours
-1 or 2 daily doses
tricyclic antidepressants metabolism?
hepatic
tricyclic antidepressants elimination?
renal
tricyclic antidepressants lipid solubility? cross BBB?
high
yes
tricyclic antidepressants adverse reactions? (8)
- anticholinergic
- sedation (anti-H1)
- Arrhythmias and hypotension (blocking α1)
- Agranulocytosis
- Extrapyramidal reactions (parkinson-like) blocking D2 receptors
- confusion + memory loss in elderly
- weight gain
- intoxication
What drugs cause Agranulocytosis
tricyclic antidepressants
What antidepressant causes psychosis?
tricyclic antidepressants
*suicide attempts
tricyclic antidepressant conrtindications? (2)
elderly
heart disease
tricyclic antidepressant drug interactions? (4)
- Sympathomimetic drugs
- Anticholinergics
- antihistamines
- antiparkinsonian drugs
- MAOs
- Enhance action of other CNS depressants
Which class of anti-depressants are safer but more expensive?
SSRIs
What drug do we use for buliemia? why?
SSRI
- anxiolytic and anorectic effects
Venlafaxine
SSRI mechanism of action
serotonin reuptake inhibitor
SSRI start to change mood after how long?
1-2 weeks
SSRI indications (2)
depression
bulimia
SSRI route of administration?
oral
SSRI metabolism?
active metabolites
SSRI protein binding?
high (80-95%)
SSRI adverse reactions? (2)
- GI intolerance: nausea and vomit
- anorexia
which antidepressants have fewer cardiovascular, anticholinergic, and neurological side effects?
SSRIs have less than tricyclic antidepressants
SSRI interactions? (3)
- enhance other CNS depressants
- MAO
- ASA
How does aspirin interact with SSRIs (2)
- displaces proteins binding to SSRI
- increases the free fraction
mechanism of action for venlafaxine?
-other antidepressant
-inhibits norepinephrine and
serotonin reuptake
What drug is a more potent inhibitor of serotonin?
venlafaxine
Venlafaxine has NO ___ & _____ effects
no anticholinergic effects & no hypotension
What adverse effects does venlafaxine have?
No significant adverse effects (mainly headache, hypertension, …)
Which antidepressant doesnt have any significant adverse effects?
venlafaxine
Mechanism of action for MAO inhibitors?
inhibit the oxidative deamination of monoamines
What are the two MAO isoenzymes?
- MAO -A
- MAO-B
MAO-A acts with which neurotransmitters? (2)
unfolds:
- serotonin (5-HT)
- noradrenaline (NA)
MAO-A acts with which neurotransmitter?
metabolism of dopamine
Selective MAO inhibitors?
- inhibit MAO-A (CLORGILINE, MOCLOBEMIDE)
- or inhibit MAO-B (SELEGILINE)-> Treatment of parkinson
nonselective MAO inhibitors?
TRANYLCYPROMINE
How long to see theraputic effects of MAO inhibitors?
2 weeks
MAO inhibitor route of administration?
oral
MAO inhibitor metabolism?
liver
What drug is used when tricyclic or other antidepressants fail?
nonselective or MAO-A inhibitors
drug of choice in the atypical depressions and in mental disorders with an important anxiety component
MAO inhibitors
Drug used for agoraphobia and other phobias, panic attacks, obsessive-compulsive disorder
MAO inhibitors
What antidepressant can cause hepatitis?
MAO inhibitor
What antidepressant can cause leukopenia?
MAO inhibitor
MAO inhibitor adverse reactions? (5)
- Orthostatic hypotension
- Sympathetic stimulation
- Hepatitis
- Leukopenia
- Decrease of salivary secretion
MAO inhibitor interactions?
- FOOD:hypertensive crisis (tyramine reaction)
- Antidepressants -hypertensive crisis
- Sympathomimetic drugs: avoid adrenaline in local anaesthesia
- Opioid analgesics (potentiation of these drugs)
What drugs can cause hypertensive crisis when taken with MAO inhibitors?
- food (tyramine reaction)
- antidepressants
With which antidepressant do we need to avoid adrenaline in local anaesthesia
MAO inhibitors
Which drug has an interaction with tyramine? what happens?
- MAO inhibitors
- hypertensive crisis
What foods have tyramine present in them?
- cheese
- liver
- sausages
- chocolate
- wine
- beer
Why does MAO interact with tyramine?
- indirect sympathomimetic
- tyramine is metabolized by MAO action
- inhibition causes increased release of catecholamines and increase of BP
What other indications are antidepressants used for?
- Psychiatric pathology: Anorexia, bulimia
- Tobacco withdrawal (Bupropion)
- Adjuvant analgesics
- migrane prophylaxis
- nocturnal enuresis