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Drugs and the Neuroscience of Behavior An Introduction to Psychopharmacology 2nd Edition Prus Test Bank

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Drugs and the Neuroscience of Behavior An Introduction to Psychopharmacology 2nd Edition Prus Test Bank

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  • September 14, 2024
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Drugs and the Neuroscience of Behavior An
Introduction to Psychopharmacology 2nd Edition Prus
Test Bank

Up until hypnotic sedatives, how did all of the drugs affect dopamine? - ANSWER: by
altering the GABA pathways -- NOT by acting on the GABA receptors themselves

sedative-hypnotics: sedative - ANSWER: low dose produce calming effect at and
general decrease in activity

sedative-hypnotics: hypnotic - ANSWER: higher dose produce drowsiness that can be
sleep-inducing

the brain's downer - ANSWER: GABA

GABA: inhibitory - ANSWER: the neurotransmitter GABA generally reduces molecular
and behavioral activity

GABA-B receptor - ANSWER: a GPCR that causes indirect effects, modulates K+
channel
affects depolarization

GABA-A receptor - ANSWER: a chloride channel causes direct hyperpolarization
basically impossible to drive depolarization after this is hyperpolarized

GABA-A subunits - ANSWER: there are a lot of different combination of alpha (n=6),
beta (n=3), gamma (n=3) subunits
the sedative-hypnotic receptor

2 main types of GABA receptors: - ANSWER: A and B

GABA receptors are - ANSWER: pentamers
5 subunits
each one is a different gene
6 alpha, 3 beta, 5 gamma
lots of different combinations possible which affect affinity for GABA and different
drugs of abuse

GABA-A site - ANSWER: binding GABA (agonist) activates that channel to pass
chloride ions

anesthetic site - ANSWER: propofol, alcohol, quaaludes, neurosteroids

barbiturate site - ANSWER: barbiturates

, benzodiazapine - ANSWER: benzodiazapines

different sites on GABA-A - ANSWER: 3 different sites
all drugs dont compete with GABA, have different sites
all positive allosteric modulators

anxiolytic - ANSWER: relief from anxiety

disinhibition - ANSWER: cognitive and motor impairment ("life of the party")

sedation - ANSWER: decrease in activity

hypnosis - ANSWER: sleep induction

coma - ANSWER: loss of consciousness

death - ANSWER: legal dose (LD50)

pharmacodynamics of barbiturates - ANSWER: GABA-A positive allosteric modulator
(PAM)

pharmacokinetics of barbiturates - ANSWER: developed drugs that last from minutes
to days

therapeutics of barbituates - ANSWER: widely used for treating anxiety, insomnia,
and epilepsy

1930s and 1940s: barbituates - ANSWER: alcohol with drug-like 1st order kinetics

barbiturates therapeutic window - ANSWER: very small

side effects of barbiturates - ANSWER: difficult to separate therapeutic dose from
drowsiness and effects on cognitive and motor function

tolerance of barbiturates - ANSWER: induces changes in liver function requiring
increasing doses

overdose of barbiturates - ANSWER: cause of numerous unintentional and
intentional deaths

the current standard of care - ANSWER: benzodiazapines

pharmacodynamics of benzodiazapines - ANSWER: GABA-A positive allosteric
modulator (PAM)

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