Mental Illness- Gottesman Flashcards
What are the monoamines?
Serotonin (controls N & D)
Dopamine (mood)
Noradrenaline (activity levels)
Depression theory one?
Stress lowers serotonin
Noradrenaline and dopamine misbalanced
Lowered mood and activity levels
Schizophrenia theory?
Enzymes in synapses decreases noradrenaline levels
Increased dopamine means hallucinations and messes with speech areas
Monoamine oxidase inhibitors?
Prevent MA reabsorption
Tricyclics?
Prevents noradrenaline and serotonin
Side effects like fatigue
Selective serotonin reuptake inhibitors
Prevents only S réabsorption
What is schizophrenia caused by?
Caused by increased or decreased dopamine in PFC.
What did Purdon do?
Gave drugs
LH weak so right hand weak
Gave drugs
Increased strength in right hand
Drugs work
Juckel
Depression means lower VS activity
Means depression
Caused by lower D, N or S
Milo?
Hypo-perfusion in brain = lower blood flow.
ECT brought those levels up almost immediately
Coffey
Lower PFC activity = lower thinking
Serotonin transporter genes
3 types
Short long
Short short (depression)
Long long
Polygenic?
Aetilogically homogeneous?
Aetilogically heterogeneous?
Polygenic= many genes contribute
Aetilogically homogeneous= 1 symptom stems from 1 gene
Aetilogically heterogeneous= many symptoms from many genes = hard to cure.
Aim Gottesman?
Likelihood of kids inheriting MI when one or both parents inherits themselves
Sample
From 2.7 million Danish kids
83 BxB gives 146 kids
196 SxS gives 270 kids
Design
Cohort study
IV- diagnoses parent
DV- diagnoses kid
Method
Parent diagnosed by ICD
Later check if kids have anything
Results
SxS- 27.3% kids had too
0 parents- 1.12%
BxB- 24.9% kids had too
Conclusions
1.12% vs 27.3% suggest genetics play huge role
Hard to tell if environmental though
Ethics
- antipsychotics to quite pateints not to cure
- short term use recommended but against human rights
- side effects like tardive dyskinesia
Usefulness
- research provides drugs
- Arroll- tricyclics vs placebo. 60% patients felt benefit of tricyclics. If all biological would increase to 100% surely.
- Thornley- chlorpromazine associated in better focus and fewer symptoms in 1100 patients
Nature vs nurture
Nature
- genetics
- abnormal brain structure
- drugs work so must be to di with brain structure in some way
Nurture
- oxygen starvation at birth
- prenatal exposure to flu
- being influenced by parents behaviour growing up
Freewill vs determinism
Deterministic
- brain abnormalities
- genetic vulnerability
Individual vs situational
Individual
- brain chemistry
- genes
- brain physiology
Situational
- poverty
- environment growing up
- work stress