Psychopharmacology, Drugs, and Addiction Flashcards
What kind of tolerance is characterized by exposure to one drug can produce tolerance to other drugs that act on the same receptor?
Cross Tolerance
What kind of tolerance is characterized by the body getting better at breaking the drug down, so less gets to the receptor site?
Metabolic Tolerance
What kind of tolerance is characterized by decreased responsiveness to a drug at the site of action?
Functional Tolerance
What kind of tolerance is developed when the situation surrounding the drug use is consistent?
Conditioned Tolerance
Define agonist
A drug that mimics or increases the effect of a neurotransmitter
Define antagonist
A drug that blocks or decreases the effect of a neurotransmitter
What does activity in the mesolimbic part of the dopaminergic pathway signal?
Reward/Reinforcement pathwat
What are two natural reinforcers for the dopaminergic pathway?
Food and Sex
What is nicotines receptor?
Nicotine Ach receptor
What is nicotines natural ligand?
Acetylcholine
What are the main effects of nicotine?
Increase HR and BP, euphoria and pleasure, increased alertness
What is the receptor for opioids?
Mu opioid receptor
What is the natural ligand for opioids?
Endogenous Opioids
What are the effects of opioids?
Pain relief, pleasure, and HR slows
What are the receptors for THC?
CB1 (brain) and CB2 (periphery)
Are Methadone/Suboxone agonist or antagonist receptors?
Agonist
What are Methadone and Suboxone used for?
Treat opioid addiction by using this drug rather than a less safe one like heroin
Is Narcan an agonist or antagonist receptor?
Antagonist
What is Narcan used for?
Stop an opiate overdose by blocking opioid receptors
Is Acamprosate an agonist or antagonist receptor?
Antagonist
What is Acamprostate used for?
Decreases neural activity during alcohol withdrawal to prevent seizures
Is Naltrexone an agonist or antagonist receptor?
Antagonist
What is Naltrexone used for?
For alcohol use disorder, it decreases the pleasureful aspect of drinking alcohol
What are the four areas of the brain where opioids act?
Midbrain, Pons, Medulla, and Spinal Cord