Pharmacology Flashcards
What units can blood concentration be expressed as?
mg of EtOH per 100ml of blood in milliMolar (mM) units
What does one unit =?
8g/10ml of ethanol
What are the inhibitory targets of alcohol on the CNS?
glycine and GABAA receptors (cys-loop family)
What are the excitory targets of alcohol on the CNS?
acetylcholine and 5-HT3 receptors (cya-loop family)
subtypes of glutamate receptor (excitatory)
What causes CNS depression?
enhancement of inhibition and suppression of excitation
Where can ethanol bind in the CNS?
intramembrane
extracellular domain
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?
GABA alpha
Which GABA subunit is synaptic and which is extrasynaptic?
synaptic - gamma
extra synaptic - delta
Where does Glutamate act?
ionotropic glutamate receptors (NMDA, AMPA and kainate subtypes)
GPCR glutamate receptors
Name an NDMA antagonist that can fight the effects of addiction but give the same feelings?
ketamine
What is the reward system in the CNS called?
mesolimbic dopaminergic pathway
Where is dopamine released?
Ventral tegmental area (VTA)
How is the Ventral tegmental area (VTA) triggered?
signals from the Nucleus accumbens (NAc)
What drugs inhibit NAc neurones?
opioids
cannabinoids
PCP
ethanol
What drugs enhance dopamine release?
amphetamines
cocaine