schizophrenia Flashcards

1
Q

what does the term schizophrenia mean

A

splitting of psychic functions

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2
Q

what are positive symptoms of schizophrenia

A

EXCESS of normal functioning

eg. feelings of being controlled

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3
Q

what are the negative symptoms of schizophrenia

A

LOSS of normal functioning

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4
Q

define alogia

A

loss of speech

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5
Q

define anhedonia

A

inability to seek pleasure

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6
Q

what percentage of pop is affected by schizophrenia

A

1%

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7
Q

define catatonia

A

motionless/ lost of movement

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8
Q

define avoilition

A

absence of motivation

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9
Q

what are the CR for schizophrenia

A

mz - 45%

dz - 10%

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10
Q

what effect does cocaine have on dopamine and schizophrenia

A

trigger schizophrenia and increase levels of dopamine

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11
Q

what did freud say delusions are a result of

A

homosexual urges

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12
Q

what did chloropromazine used to be used for

A

antihistamine

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13
Q

what effect does chloropromazine have on schizophrenia

A

calming agent

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14
Q

how does chloropromazine work

A

block dopamine receptor
stop dopamine working
increase affinity

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15
Q

where does resperine come from

A

snake root plant

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16
Q

what type of neurotransmission occurs in chloropromazine and resperine

A

antagonist neurotransmission

17
Q

what side effects does resperine cause

A

reduction in blood pressure

18
Q

how does resperine work?

A

reduction in vesicles and reduce dopamine released

19
Q

what similarities occur between chloropromazine and resperine

A
  1. drugs act under same mechanism

2. PD symptoms begin to emerge

20
Q

what are neuroleptics

A

anti schizophrenia drugd

21
Q

what are atypical neuroleptics

A

treat schizophrenia without binding strongly to D2 receptors

22
Q

what effects do psychedilic drugs cause

A

alter perception, cog and emotion

23
Q

what does ketamine mimic

A

mimic negative effects of schizophrenia

24
Q

what does LSD mimic

A

mimic the positive symptoms of schizophrenia

25
Q

what do schizophrenia related genes disturb

A

myelination, glutamate transmissin and GABA synapses

26
Q

what effect does schizophrenia have on the brain

A

smaller brain size
neuron loss
abnormalities in brain structure

27
Q

what is green IBZM used for

A

chemical to measure dopamine receptors

28
Q

what is the cause of schizophrenia

A

hyperactivity specifically at D2 receptors

29
Q

what is the effect of more ‘greenies’ (measure of dopamine receptors

A

improvement of positive symptoms of S in treatment process

30
Q

what is the effect of good binding process to D2 receptors

A

more effective to suppress symptoms fo schizophrenia

31
Q

what is the effect of a good binding process to dopamine receptors

A

increase efficacy of the drug

32
Q

which receptors to chloropromazine and phentothiazines bind to

A

both D1 AND D2 receptors

33
Q

which receptors do haloperidol and butyrophenoes bind to

A

bind effectively to D2

dont bind effectively do D1

34
Q

what is D1 coupled with

A

D1 is positively coupled with adenlyate cylise

35
Q

what is adenlyate cylise

A

enzyme helps pass message inside the cell

36
Q

what is D2 coupled with

A

negatively coupled with adenlyate cylise

37
Q

what does clozapine bind effectively to

A

D4 receptor

38
Q

how many types of dopamine receptor are there

A

research shows there is more than 1 dopamine receptor