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Drugs of Abuse
Drugs of Abuse - Pharm
| Question | Answer |
|---|---|
| Positive Reinforcement = ? | * Animal does something, and get a reward with a drug directly in to the brain.... * Spot for reward pathway = nucleus accumbens and VTA |
| Neurotransmitter released during + reinforcement at the Nucleus Accumbens and VTA = ? | * Dopamine.... * targeting the mesolimbic pathways |
| Some circuits involved with activation of the Nucleus Accumbens and VTA = ? | * mvt, judgement, reward, memory, coordination ,vision and sensations |
| Even after successful withdrawal and prolonged drug-free periods, addicts are at a high risk of ? | * Relapse |
| Pharmacokinetic Tolerance = ? | * Reduction of [drug] OR shorter duration of action in a target system--- Have to take more drug to get same effect after awhile |
| Pharmacodynamic Tolerance = ? | * Change in receptor function (desensitization and receptor internalization) |
| Cross-Tolerance = ? | * people tolerant to one drug in a class are likely going to be tolerant to other drugs in the same class |
| Fastest way to get a cocaine high (snort or smoke?) ? | * Smoking has a faster high (IV is still slightly faster) |
| Gi/o-coupled receptor drugs = ? | * Opioids, cannabinoids, gamma-hydroxybutyrate, hallucinogens |
| Ionotropic receptors or ion channel drugs = ? | * Nicotine, alcohol, benzodiazepines, dissociative anesthetics, some inhalants |
| Monoamine transporter activation drugs = ? | * Cocaine, amphetamines, ecstasy |
| These drugs alter perception WITHOUT causing sensations of reward and euphoria = ? | * Non-addictive Drugs of Abuse |
| Non-addictive Drugs of Abuse and their MoA = ? | * Lysergic acid diethylamide (LSD) – activates serotonin receptors in the PFC .....* Phencyclidine (PCP) and Ketamine – inhibition of the glutamate NMDA receptor..... * Gamma-hydroxybuturate (GHB) |
| Drug that exceeds all other forms of addiction = ? | * Nicotine = Selective agonist of the nicotinic acetylcholine receptor (nAchR) |
| Nicotine TmT = ? | * nicotine gum/patch... * Buproprion or Varenicline (a partial nAchR agonist) stops craving |
| Most used drug in the world = ? | * Caffeine.... * Inhibits dopamine release --> causes mild stimulation |
| Benzos MoA and basics = ? | * bind to GABA-a receptors... * need to taper off, no cold turkey |
| Cocaine routes = ? | * injected, inhaled, or smoked |
| Cocaine MoA = ? | * PNS: cocaine inhibits voltage-gated Na+ channels .... * CNS: blocks the reuptake of dopamine, norepinephrine, and serotonin through there respective transporters |
| CNS MoA simplified = ? | * cocaine stops the reuptake of NE in the NE transporters, increasing NE in the synaptic cleft.... * with NE not going back in the NET to be stored, vessicles make more NE (thinking it is depleted) and release more |
| Cocaine on D2 receptors = ? | * Cocaine abuser = fewer dopamine rec available… (due to tolerance) |
| Amphetamine MoA = ? | * reverse the action of dopamine and norepinephrine transporters, enter the cell and interfere with vesicular monoamine transport |
| MoA simplified = ? | * Same effect as Cocaine, different MoA.... * Amphets. get taken up by NET, the cell thinks there is too much NE in the vessicle --> sends NE back out the NET to the synaptic cleft |
| Amphetamine administration = ? | * Taken initially in pill form, but can smoked or injected |
| Ecstasy = ? | * MDMA (mollys).... * MOA: similar to amphetamines, binds to the serotonin transporter increases extracellular serotonin.....* Ravers, cause dehydration and they drink water and get water intox that leads to seizures |
| Cathinones = ? | * Bath Salts = CNS stimulant and can see stuff |
| Gamma-hydroxybutyrate (GHB) | * Pharmacological actions mediated through GABA -B receptor... * Date Rape drug |
| LSD = ? | * No addiction or dependence ..... * Induce perceptual symptoms (i.e.shape and color distortion) |
| Cannabinoids = ? | * THC inhibits presynaptic GABA neurons in the VTA which enhances dopamine neurotransmission |
| **Medical Uses of Marijuana** | . |
| Basics = ? | * Can be recreational, decriminalized, or for medical use |
| Decriminalization = ? | * decriminalization means no prison time or criminal record for first-time possession of a small amount for personal consumption. The conduct is treated like a minor traffic violation |
| Dronabinol = ? | * “Synthetic THC” oral medication = Antiemetic and appetite stimulant (Schedule III) |
| Nabilone = ? | * Oral medication = Antiemetic for cancer chemotherapy (schedule II) |
| Medical Marijuana Uses = ? | * Cancer, Pain, Psych issues, HIV/AIDS, Neurodegenerative Disorders |