Pharmacology - Drug Abuse and Marijuana (Exam 6) Flashcards
Preoccupation with the use and procurement of a drug. The individual feels that the drug is needed for their continued well being.
Compulsive drug use
behavioral pattern of compulsive drug use
Addiction
Natural reward examples
Food
Sex
Water
Nurturing
The reward pathway in the brain involves which neurotransmitter?
Dopamine
Altered physiological state as a result of chronic drug use
Physical dependence
Degree of physiological dependence can be determined by the severity of the?
Withdrawal
Withdrawal intensity is related to the degree of altered function. Name 3 things that cause this
1) high doses
2) frequent administration
3) long periods of use
More drug is needed to elicit the same response
Tolerance
3 types of tolerance
- Metabolic/pharmacokinetic
- Cellular/pharmacodynamic
- Reverse/sensitization
Less drugs get to the site of action
Metabolic tolerance
Same amount of drug gets to the site of action but the response is reduced
Pharmacodynamic/cellular tolerance
Describe the 2 types of reinforcements
(+): drug induces euphoria/pleasure
(-): drug terminates pain, anxiety
Examples of secondary reinforcers
Sight of the drug, environment in which drug was taken
Name some opioids (5)
Heroin
Morphine
Naltrexone
Methadone
Buprenorphine
MOA of opioids
Opioid receptor agonist
(opioids receptors = GPCR’s)
Morphine binds to ____________ receptors in the reward pathway
opiate
Name some hallucinogens
Pyschedelics: LSD, mecaline, psilocin, psilocybin,
Deliriants: PCP, Ketamine, THC
MOA of LSD
Serotonin receptor agonist
MOA of an LSD-Like drug: Mescaline
Serotonin receptor agonist
MOA Psilocybin/Psilocin
Serotonin receptor agonist
Psilocybin/psilocin
Mushrooms
MOA of PCP
Noncompetitive antagonist of NMDA receptor
MOA of ketamine
Noncompetitive antagonist of NMDA receptor
How does amphetamine increase extracellular dopamine? (2 ways)
1) competitively inhibits DA reuptake
2) causes release of DA
MOA of methamphetamine
Inhibit DA reuptake and cause release of dopamine
MOA of MDMA
Reverses the action of the serotonin transporter
Another name for MDMA
Ecstasy/molly
Name some uses of amphetamine
1) ADD
2) obesity
3) narcolepsy
MOA of methyphenidate
inhibit DA reuptake
Drug of choice for ADD
methylphenidate (Ritalin)
MOA of cocaine
Block reuptake of biogenic amines, primarily dopamine
Methadone maintenance is a ___________ agonist for the treatment of ________ dependence
mu; opioid
Our fav opioid antagonist
Naltrexone
_______________ is a partial agonist of the mu receptor
Buprenorphine
What is the active principal in marijuana?
9 - tetrahydrocannabinol (Δ9 -THC)
MOA of marijuana
Binds to cannabinoid receptor