Depression Flashcards
reactive depression
triggered by negative experience
endogenous depression
no apparent cause
affective disorder
depression
disturbances of mood or emotion
concordance rates
Mz = 60% Dz = 15%
monoamine oxidase inhibitors
Iproniazid monoamine agonist (increases levels of monoamines by inhibiting monoamine oxidase)
- cheese effect - side effect - blood pressure risks
tricyclic antidepressants
Impipramine
block reuptake of serotonin and norepinephrine which increases levels in the brain
selective monoamine-reuptake inhibitors
selective serotonin reuptake inhibitors (SSRI’s)
- blocks reuptake of serotonin (Floexitine/Prozac)
mood stabilisers
Lithium
treats mania without affecting depression
brain structures involved
reduction in overall brain size and in specific structures:
amygdala
prefrontal cortex
hippocampus
monoamine theory
under-activity in serotenergic and noradrenergic synapses
up-regulation = find more synapses as the body tries to over compensate
neuroplasticity theory
therapeutic effects of drugs take weeks to take effect
must be something further downstream
neuron loss in the amygdala, prefrontal cortex and hippocampus
Brown (1993)
84% experience stress in previous year
32% of control do
diathesis-stress model
people have a predisposition for depression
environmental factors then increase the chance of developing it