Somatic Therapies Flashcards
Why do antidepressants take a long time to work?
Need to increase receptors, and gene transcription
What is the MOA of imipramine? Use?
TCA
Enuresis
What is the MOA of bupropion?
NE and dopamine reuptake inhibitor
What is the MOA of venlafaxine?
SNRI
What is the MOA of desvenlafaxine?
SNRI
What is the MOA of duloxetine?
SNRI
What is the MOA of levomilnacipran?
SNRI
What are the two TCAs that are used to treat pain?
Amitriptyline
Nortriptyline
What is the only SSRI that is not approved for use in MDD? What is it used for?
- Fluvoxamine
- OCD
Which SSRI is used for bulimia?
Fluoxetine
Which SSRIs are used to treat GAD?
Escitalopram
Paroxetine
True or false: structurally, the SSRIs are structurally similar
False
What is the major side effect of bupropion?
Lowers seizure threshold
SSRIs are metabolized through what organ?
Liver
Which of the SSRIs have long lasting, active metabolites? (2)
- Fluoxetine
- Sertraline
What are the side effects of SSRIs?
- Weight gain or loss
- Vivid dreams
- mild GI symptoms
What is the treatment for serotonin syndrome?
Cyproheptadine
What is the effect of SSRIs and the p450 system?
Metabolized by it–cause drug interactions
What is the age range that SSRIs can cause increased suicidality?
up to 24
True or false: there is no evidence that there is an increased in actual suicide with antidepressants, just thoughts
True
What are the s/sx of serotonin syndrome?
- Diaphoresis
- Mental confusion
- Flushing
- Hyperthermia
- Hypertonicity
True or false: SNRIs inhibit both NE and 5HT in equal amounts
True
What is the SNRI that has been approved for MDD, GAD, panic DO, SAD, pain syndrome?
Venlafaxine
What is the effect of venlafaxine at higher and lower doses?
Lower = 5HT reuptake inhibition
Higher = NE and dopamine
What is the effect of venlafaxine an p450 enzymes?
Does not use the p450 system
What is the major downside of venlafaxine withdrawal?
fast onset
What is the MOA of levomilnacipran?
SNRI
What is the role of bupropion in the treatment for anxiety disorders?
Not effective
Why is it that bupropion may test positive for amphetamine use?
Similar structure
What is the effect of bupropion on sexual function?
No effect
What is the factor that determines the risk of bupropion on seizure threshold?
Plasma levels–even transiently
What is the MOA of vilazodone?
SSRI and 5HT1A partial agonist, to enhance serotonergic activity
What is the MOA of vortioxetine?
Lots of 5HT modulation and reuptake inhibition
What is the MOA of trazodone? Use?
Weak inhibitor of serotonin, but also blocks 5HT2 receptors
Sleep agent
What is the risk for addiction of trazodone?
Low to none
What is the MOA and use of nefazodone? Major side effect
- Weak inhibition of neuronal 5HT
- MDD
- Hepatotoxic
What is the MOA of mirtazapine? Use?
Potent antagonist at post synaptic 5HT2 and 5HT3 receptors
used as a sleep aid
What are the side effects of mirtazapine?
-Sedation
Weight gain
-minimal p450 interaction
Which of the TCAs can treat OCD?
Clomipramine
What is the major side effect of clozapine?
Agranulocytosis
What is the general MOA of TCAs?
Blocks reuptake of NE, and 5HT
What are the adverse effects of TCAs?
- Anticholinergic
- Antihistamine
- Anti-alpha adrenergic
What organ metabolizes TCAs?
LIver
What is the interaction between p450 enzymes and TCAs?
TCAs metabolized by them, so anything that inhibits them will increase blood TCA levels
What is the use of obtaining blood levels of TCAs? (2)
- Ensure no cardiac issues
- treatment adherence
What are the major side effects of TCA?
- anticholinergic effects
- sedation and weight gain (antihistamine effect)
What are the alpha adrenergic effects of TCAs?
- Orthostatic hypotension
- reflex tachycardia
Are TCAs safe in prego?
No
What are the cardiovascular effects of TCAs?
- QT prolongation
- Arrhythmias
What is the dose range for amitriptyline for pain control, as compared to antidepressant effects?
Much smaller for pain control
What is the general MOA of MAOIs?
blocks enzyme that degrades neurotransmitters.
Increased 5HT, NE, dopamine
Draw out the dopamine pathway
Draw
True or false: MAOIs do not have active metabolites
True
What are the three major MAOIs?
- Tranylcypromine
- Phenelzine
- Selegiline
What are the side effects of MAOIs?
- Sedation
- Orthostatic hypotension
- anticholinergic
What are the high tyramine foods? (6)
- Chicken liver
- Beer
- Wine
- Soft cheeses
- fava beans
- chocolate
What is the major issue with MAOIs and tyramine?
Hypertensive crises and strokes
What is the major use of selegiline?
MAO-A inhibitor for PD
What is the major benefit of transdermal selegiline?
No tyramine dietary restrictions
What is the usual timeframe in which antidepressants work?
within 6 weeks
True or false: bipolar depression does not respond well to antidepressants
True
What endocrine lab must be monitored with Li?
Hypothyroidism
True or false: In general, the less severe the depression, the less response to antidepressants
True
True or false: secondary MDD respond better than primary with antidepressants
False–worse
What is the difference between remission and response?
Response = 50% better Remission = 100% better
What is the only SSRI that is not given daily?
fluvoxamine
At what point should you switch drugs if not working?
2-3 months
What is the only SSRI that does not need to taper off of?
Fluoxetine
Who needs to start at lower doses of SSRIs?
Old or hepatically disabled
For unresponsiveness with SSRIs, what should always be done?
Reassess for other diseases
What are the pharmacological augmentation strategies?
Add second antidepressant with a different MOA:
- stimulant
- buspirone
What are the non-pharmacological augmentation strategies?
- Sleep promoters
- Lifestyle changes
- Psychotherapy
What is the MOA of buspirone? Use?
- serotonin 5-HT1A receptor partial agonist
- Non-sedating anxiolytic
What is the treatment duration for antidepressants?
stable for 6 months or 12 month for a complicated case
What happens to treatment time with increasing age?
Shorter treatment time needed
What are the major fetal effects on SSRIs?
- Paroxetine
- persistent pHTN
What is the focus of SSRIs in pregnancy?
Maintaining health of the mother
Where are MAO-A enzymes found? MAO-B?
A = brain, liver, gut
B - Brain, liver, platelets