Drug addiction Flashcards
What causes dependence of a drug?
-Your body adapts and tolerates the drug that can lead to withdrawals from persistent use
What is addiction?
-A disorder of pathologic decision making
All abused substances enhance what?
-Dopamine activity in nucleus accumbens
Besides dopamine what other pathways are involved in substance abuse?
- Glutamate
- GABA
What are the functions of dopamine?
- Reward
- Pleasure
- Euphoria
- Motor function
- Compulsion
- Perserveration
- Decision making
What are the functions of Serotonin?
- Mood
- Memory processing
- Sleep
- Cognition
T/F Drugs that work with dopamine usually also work with serotonin
True
What do amphetamines alter?
-Dendrites and it increases synaptic connections
What do opioids narcotics do to cause dopamine release?
-Activate opioid receptors
What does nicotine do to cause dopamine release?
-Activate nicotinic receptors
What does marijuana do to cause dopamine release?
-Activate cannabinoid receptors
What does caffeine do to cause dopamine release?
-blocks adenosine receptors
What are classic DA uptake blockers?
- Cocaine
- Ritalin
What drugs cause release of DA vesicles and reverse transporters “releasers”?
- Amphetamines
- Methamphetamine
- MDMA (Ecstasy)
- Ephedrine
- “bath salts”
What are the long term consequences for using amphetamines?
-4 fold increase for Parkinson’s disease