Pharmacology Flashcards

1
Q

What units can blood concentration be expressed as?

A
mg of EtOH per 100ml of blood
in milliMolar (mM) units
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2
Q

What does one unit =?

A

8g/10ml of ethanol

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3
Q

What are the inhibitory targets of alcohol on the CNS?

A

glycine and GABAA receptors (cys-loop family)

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4
Q

What are the excitory targets of alcohol on the CNS?

A

acetylcholine and 5-HT3 receptors (cya-loop family)

subtypes of glutamate receptor (excitatory)

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5
Q

What causes CNS depression?

A

enhancement of inhibition and suppression of excitation

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6
Q

Where can ethanol bind in the CNS?

A

intramembrane

extracellular domain

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7
Q

What receptor subunits in the brain are involved in distinct aspects of the behavioural effects of ethanol that include reduction of anxiety, sedation and impaired motor coordination?

A

GABA alpha

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8
Q

Which GABA subunit is synaptic and which is extrasynaptic?

A

synaptic - gamma

extra synaptic - delta

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9
Q

Where does Glutamate act?

A

ionotropic glutamate receptors (NMDA, AMPA and kainate subtypes)
GPCR glutamate receptors

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10
Q

Name an NDMA antagonist that can fight the effects of addiction but give the same feelings?

A

ketamine

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11
Q

What is the reward system in the CNS called?

A

mesolimbic dopaminergic pathway

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12
Q

Where is dopamine released?

A

Ventral tegmental area (VTA)

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13
Q

How is the Ventral tegmental area (VTA) triggered?

A

signals from the Nucleus accumbens (NAc)

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14
Q

What drugs inhibit NAc neurones?

A

opioids
cannabinoids
PCP
ethanol

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15
Q

What drugs enhance dopamine release?

A

amphetamines

cocaine

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16
Q

What occurs in the brain in response to withdrawl?

A

upregulation of NMDA receptor expression in the brain and downregulation of GABBA alpha receptors

17
Q

What happens after an alcohol withdrawl?

A

There is an imbalance of excitory and inhibitory influences which causes anxiety, dysphoria and seizures