Lecture 3 - Mood Disorders Flashcards
major depressive disorder (MDD):
symptoms must last more than _____ ____ that cannot be due to ____, medical condition, or ____
2 weeks;
drugs, bereavement
biogenic amine hypothesis in MDD:
_____ Causes depression by depleting NE and 5HT from vesicles;
reserpine
agents that increase 5HT and NE are effective in treating depression
Neuroendocrine hypothesis in MDD:
overactivity of the _____ axis and elevated ___ are seen in almost all depressed patients.
hypothalamic-pituitary-adrenal (HPA), CRF
stress/cortisol = increased CRF
neurotrophic hypothesis in MDD:
based off of what molecule/factor?
it is associated with increased ____ in neurons;
depressed patients have ____ levels
BDNF (brain derived neurotrophic factor);
branching/sprouting;
decreased
integrated hypothesis in MDD:
hippocampal glucocorticoid receptors are ____ by cortisol during stress, _____ BDNF levels.
chronic activation of monoamine receptors ____ BDNF levels and leads to a _____ of the HPA axis
activated, decreasing;
increase, downregulation
do antidepressants have an immediate or delayed therapeutic response?
delayed
for reasons unknown
MOAa breaks down what molecules?
what about MOAb?
MOAa = Dopa, NE, 5HT; MOAb = just dopamine
name 3 non selective MOA inhibitors (MOAIs)
tranylcypromine, phenelezine, isocarboxazid
____ is a MOA-B selective inhibitor. ____ is a MOA-A selective inhibitor
selegiline;
moclobemide
MOAI side effects: CNS \_\_\_\_\_. sexual dysfunction or no? \_\_\_\_ syndrome hypertensive crisis with ingestion of \_\_\_\_, which is found in what foods?
stimulation;
serotonin syndrome
yes;
tyramine–>aged cheese, wine (plus others)
HTN crisis:
what herbal remedy has some MOAI activity?
tyramine does what that causes this?
treat with _____
St. John’s Wort;
displaces other NTs into synaptic cleft–>sympathetic stimulation;
phentolamine
selegiline can be used to treat what?
Parkinson disease
imipramine, amitriptyline, trimipramine, clomipramine, and doxepin belong to what drug class?
they are ____ amines
TCA’s;
tertiary
name 2 secondary amines (TCA’s)
desipramine, nortriptyline
also protiptyline
TCA mechanism of action
inhibit NE and 5HT reuptake
ie inhibit NET, SERT