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158 Cards in this Set
- Front
- Back
What does Marijuana refer to?
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the leafy top portion of the plants, including the leaves and buds
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what does hashish refer to?
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made from the dust of the resin produced by the plant for protection from the sun & heat to maintain hydration
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where are the strongest stains grown?
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warmer climates because they produce greater amounts of resin which generally has stronger psychoactive effects
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When did American's start using cannabis as an all purpose medication?
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1800s
-following the lead of European physicians |
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Was cannabis used recreationally during the 1800s?
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To a limited extent
|
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when were the first warnings fo the dangers of MJ use released?
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1926
-the statistics were often fabricated |
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Harry Jacob Anslinger's War
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-assistant commissioner of prohibition
-successfully encouraged many states to restrict marijuana -1930, 16 states had marijuana statutes -1937, almost all did |
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Anslinger's Marijuana Tax Act - 1937
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-did not BAN marijuana
-premitted medical use of marijuana -physicians could prescribe after paying $1 for license -other uses were banned with stiff penalties -opened the door for stiffer penalties over the years |
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True or False, in the 1960's some judges would give life in prison for marijuana usage
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True
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in the 1960s, what could a 2nd offense in Georgia result in?
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execution
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in 1970, what did Congress do regarding Cannabis
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the placed it into Schedule 1
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What are the methods of marijuana use?
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-ingested in food
-chew leaves -inhalation |
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when was the first chemical analysis of cannibis?
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1821
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How many chemical compounds are found in cannabis?
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400+
-60+ are unique to cannabis (cannabinoids) |
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When was the principal psychoactive agent of cannabis identified? Where & what is it?
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1964
-Israel -delta-9-tetrahydrocannabinol (THC) |
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What other components of cannabis are biologically active and what do they modify?
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cannabidiol and cannabinol
-can modify THC effects -tend not to be psychoactive by themselves |
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What is the term for a cannabis plant with the highest levels of potency and what are its characteristics?
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Sinsemilla
10-30% THC -seedless -un-pollinated -female plants |
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What are the recorded THC levels in hash?
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Up to 60% THC
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what do the pharamcokinetics (absorption) depend on for cannabis?
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depends on the model of consumption
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Pharmacokinetics of Inhalation
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-absorption directly from lungs
-onset of action begins within minutes |
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how long does it take for the peak blood plasma concentrations when cannabis is smoked?
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30-60 minutes
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how long do the effects of smoking marijuana last?
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2-4 hours
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what does smoking joints expose the lungs to?
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unfiltered tars, hydrocarbons & unknown contaminants
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What are the pharmacokinetics of oral intake of cannabis?
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-slower & less efficient
-peak plasma levels in 2-3 hours -absorbed primarily through the GI tract -high lasts longer (4-6 hours) but the individual must consume more for a comparable experience |
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what does orally-consumed cannabis have to pass through before moving to the brain?
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the liver
-liver clears much of the THC so less makes it to the brain |
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cannabinoids are soluble in what?
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lipid soluble
-meaning they are almost entirely insoluble in water -leaves blood quickly but stores in fatty organs (especially brain, lungs, kidney and liver) -excreted slowly over days and metabolites for weeks |
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does THC cross the placental barrier?
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yes
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what is THC primarily metabolized by?
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the liver
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what is THC excreted through?
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urine & feces
-approx 1/2 within several days, the remainder approx 1 week **metabolites can remain in the body for 30 days (1 time) and remian in the urine for several weeks (chronic use) |
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what is the mechanism of action for cannabis
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anandamide (sanskrit for Bliss)
-chemical appears to bind with the same receptors as cannabinoids -effects of memory, movement, hunger and pain |
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is the Nucleus Accumbens impacted by cannabis?
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Yes, but the effect is uch less than other drugs impacting this area (heroin, cocaine, meth)
-NA is related to pleasure |
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what are the 2 new brain cannabinoid receptors recently identified?
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CB1 & CB2
-uniquely stimulated by THC -CB1s located mostly in areas controlling memory, mood, cognition, motor system -CB2s are most prevalent in immune system **anandamine binds to these receptors |
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where does THC increase blood flow?
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the cerebral cortex & deeper structures
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When do tolerance effects become more likely?
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following repeated administrations of THC & the dosage level of THC increases
-higher dose and greater period of use= higher likelihood |
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Is there an agreement in the scientific community regarding cannabis dependance?
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no, there is evidence to suggest possible withdrawal symptoms, including irritability, sleep disturbance, nausea and restlessness
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physiological effects of cannabis
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-acute effects differ amongst users (intensity and duration)
-most common acute physiological effects: -bloodshot eyes (vasodilation) -pupil dilation -increase in HR & BP -decreased motor activity decreased REM (higher doeses) -drymouth & thirst -fluctuating body temp -hunger -impaired short-term memory & attention -decreased pain sensitivity -less common include: headaches, nausea and dizziness |
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long-term physiological effects of cannabis
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-data on long-term effects are spare and confused
Respiratory: -mixed results -proper lung function appears impaired but damage probably repairs with abstinence -perhaps related to increase in tar in cannabis or method of inhalation -confused studies because many cannabis users also smoke tobacco |
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long-term physiological effects (cardiovascular system)
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individuals with compromised cardiovascular systems could conceivably have problems related to increased HR/BP
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long-term physiological effects (immunte system)
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-contradictory evidence
-can act as an immunosuppressant |
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long-term physiological effects (reproductive system)
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-does disrupt the reproductive system in M/F (animal and human studies)
-decrease in sperm and sperm mobility -non-ovulatory menstruation cycles |
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fetal effects of cannabis
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-teratogenic effects are of concern
-cannabinoids cross the barrier between mother and the unborn -current studies do not determine a high likelihood of major birth defects -those effects detected are similar to those with cigarettes: premature birth, shorter body length, lower birth rate -there have been associations with increased risk of developing certain childhood cancers, exhibiting tremors, incorrect startle responses, and altered visual responses -by age 6, deficits in sustained attention -by 10, more impulsive, hyperactive and deliquent |
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behavioral effects of cannabis
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decreased psychomotor performance (dose related)
-relaxation & tranquility -increased speech -some experience more excitement -keener senses -decreased sensitivity to pain -sexual behavior is variable |
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cognitive effects of cannabis
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-short term memory impairments
-distorted perception of time -attentional deficits -long-term use: mixed results --> possibility of enduring cognitive deficits remains possible with heavy, long term use |
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emotional effects of cannabis
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-carefree & relaxed
-euphoric, content, happy & excited -laughter -intensity is correlated with dose -anxiety & dysphoria also occur -suspiciousness & paranoia |
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psychosis and marijuana
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marijuana users were found to have a 40% higher chance of developing a psychotic disorder later in life, compared to non-users
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what is the therapeutic index for cannabis?
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(ED/LD) is high
-lethal dose has been estimated to be somewhere between 20,000 to 40,000 times the effective dose -THC sensitive receptors are not found in the brain stem areas that control breathing |
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what schedule is synthetic thc located in?
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Schedule III
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cachexia
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-physiologically "wasting away"
-associated with HIV infection & cancer -cannabis helps because of the increasedeating -stimulates appetite and therefore weight gain -some empirical support but mostly anecdotal evidence |
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glaucoma
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generic term referring to ocular disease involving increases in ocular pressure
-pressure damages the optic nerve -represents the leading cause of blindness in the US -cannabis decreases intraocular pressure |
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what are 2 legal prescriptions for "cannabis drugs"
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marinol
(thc in sesame oil) cesamet (synthetic thc) -shown to be clinically effective as anti-nausea treatments -reactions vary considerably with some reports of dysphoria using the synthetic version |
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Treatment for Cannabis "Addiction"
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-outpatient treatment is the norm
-group treatment is more common than individual treatment -Evidenced-Base Treatment: CBT, Behavioral, Motivational, Interviewing, Relapse Prevention -intense but brief interventions |
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coca bush, coca tree
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low shrub with leaves containing powerful stimulant
-indigenous to south america -used for centuries by Native tribes in that region, including Incas |
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When did researchers isolate the potent quality of coca and what was it?
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1850s
-cocaine -thus beginning its spread throughout Europe |
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how is cocaine extracted?
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cocaine is extracted from the leaves resulting in a paste of ~80% cocaine
-paste + hydrochloric acid=cocaine hydrochloride (which is a salt) ----now it is water soluble and can be taking orally, intranasally and IV -cocaine hydrochloride is not smoked because the heat breaks down the compound -cocaine hydrochloride + ether (highly flammable) or alkaline solution of baking soda = crack/rock cocaine --->can now be smoked |
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who was the 1st documented case of cocaine addiction in Europe?
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Ernst von Fleischl-Marox
-Freud's friend being treated for morphine addiction and chronic pain -prescribed cocaine and became severely addicted -had paranoid delusions & formication syndrome (bugs in skin) |
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when did the cocaine epidemic begin?
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-1880s
-cocaine became readily available over the counter in patent medicines with no prescription as well as prescription drugs |
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When did cocaine become a controlled substance?
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1914 Harrison Narcotics Act
-US saw a decrease in popularity and use |
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when did freebasing of cocaine emerge?
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late 1970s
-freebasing refers to heating the rocks and smoking the vapors -highly potent so a smaller amount (single dose) could be sold at one time and appear cheaper overall -high comes on fast and lasts 10-20 minutes |
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Cocaine and the 1980s
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crack ether replace with baking soda procedure, making it safer and easeir to produce
-prices drop and sales increase dramatically -dependance on cocaine once viewed as a minor health problem, suddenly seen as a major societal catastrophe -accounts for more ER visits than any other illegal drug |
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Anti-Drug Abuse laws in the late 1980s
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-more punitive of crack posession than powdered cocaine
-controversy due to disproportionately affecting young male african americans |
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Fair Sentencing Act 2010 (crack vs powder)
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recognized the discrepancies in arrests an eliminated minimum sentencing requirements for small amount of crack
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what is the intensity and duration of a cocaine high dependent on?
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administration method
-orally has a slower onset, slower and lower peak than other methods -intranasal--> absorption properties similar to oral administration *both oral and nasal require 10-15 minutes for drug action to begin -intravenous has intense effects within 30 seconds -inhalation of crack cocaine is even faster -cocaine metabolizes more quickly than other stimulants (effects dissipate in about 20-80 minutes after administration) |
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Pregnancy and Cocaine
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-higher rates of spontaneous abortion, fetal death, premature labor/birth
-lower birth weight/length -more likely to die in infancy -generally do not appear to perform worse than comparison groups on intellectual tasks (neurological damage and learning disabilities) -issues of deprived environment, neglect may be the real problem |
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The Harrison Narcotics Act (1914) decreased cocaine use and increased.....
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amphetamine use
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when were amphetamines 1st synthesized?
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Germany 1887
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What are some examples of amphetamines?
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levoamphetamine
dextroamphetamine methamphetamine |
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when were the first medical applications for amphetamines developed?
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1920s
-cold, sinus,breathing problems, anti-depressant, narcolepsy, attention deficit/hyperactivity disorders -used in WW2 by Allied & Axis forces for stimulant properties |
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When did amphetamines become popular in the US?
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when physicians began prescribing methamphetamine to treat heroin addiction
-resulted in an explosion of abuse during 1960s --especially injection |
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Controlled Substance Act of 1970
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implemented due to the abuse of methamphetamines in the 60s
|
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where were methamphetamines first synthesized?
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Japan 1919
-1980s seen as a bikerdrug -popularity rose during the 1990s, appearing on the West Coast and Hawaii |
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1996 Comprehensive Methamphetamine Control Act
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increased penalties for manufacturing and trafficking meth
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2006 Combat Methamphetamine Epidemic Act
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limited sale of pseudophedrine and ephedrine
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Bath Salts
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-mephedrone, methylone & methylendiopyrovalerone
-amphetamine-like stimulants -rarely seen in the US prior to 2009 appeared in products called "bath salts" or "plant food" -spread to Europe and became the #1 club drugs in 2009 -large number of ER visits and overdose deaths |
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When was Mephedrone first syntehsized?
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(Bath Salts)
1920s -not used until 2000s in Israel as an insecticide |
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how are bath salts used?
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-sometimes taken orally
--more often intranasal or IV -high doses associated with acute psychotic features, paranoia and death -acute toxicity leads to panic attacks, paranoia, hallucinations, hostility, self-mutilation, trachycardia and elevated BP |
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When were bathsalts banned?
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Banned by the DEA in 2011
-all 3 were placed on "emergency schedule 1 status" -2012 Synthetic Drug Abuse Prevention Act--> mephedrone & MDPV were both included |
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Are stimulants all taken the same way?
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no they are all administered and absorbed in a variety of ways
-all readily absorbed orally |
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intranasal absorption of stimulants
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absorption is similar to oral absorbtion
-both take 10-15 minutes for drug action to begin |
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how long does it take for drug action to begin with IV administration of a stimulant?
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within 30 seconds
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What is the fasted form of administration for stimulants?
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freebasing
|
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what is the primary difference between cocaine and amphetamines?
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duration of action
-cocaine is metabolized rapidly, most effects dissipate 20-80 minutes after administration -amphetamines are much longer lasting -effects last 4-12 hours -their metabolites are also detectable in urine for 2-3 days |
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How do stimulants effect the brain?
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through complex actions on monoamine neurotransmitters
-dopamine, norepinephrine & serotonin -cocaine and amphetamines block reuptake of dopamine, norepinephrine, and serotonin -Ritaline also increases the release of dopamine and norepinephrine |
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what are the initial effects of stimulants?
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-increased activity in neural pathways that are sensitive to monamines
-powerful reinforcing properties of cocaine and methamphetamine -thought to stem from their action on dopamine containing neurons in mesolimbic dopaminergic pathway -this is the area thought to mediate reward - |
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acute physiological effects of stimulants
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-sympathomimetic drugs
-they stimulate or mimic activity in the sympathetic branch of the ANS -elevated HR, BP, respiratory rate & sweating -blood flow decrease to internal organs and extremities -blood flow increases to large muscle groups and the brain -works as an appetite suppressant as well |
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behavioral effects of stimulants
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moderate doses produce sense of elation and mood elevation, increased talkativeness and sociability, insomnia, sexual interest, and often causes erectile dysfunction
-enhances physical endurance, redues fatigue -speeds up performance on some types of cognitive performance |
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stimulant effects (in HIGH doses)
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-can lead to psychotic states
-paranoid delusions -compulsive stereotyped behavior -hallucinations -stimulant psychosis can be treated like other psychotic disorders |
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Theraputic Index for Stimulants
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-high risk of overdose
-difficult to specify lethal doses -death has occured with as little as 20mg of a local anesthetic -when greater amounts are taken, there are other possible.plausible consequences that can lead to death (convulsions, seizures, respiratory collapse, myocardial infarction & stroke) -depression is very common in with |
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chronic use of cocaine results in what?
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a tolerance to cocaine
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what is acute tolerance?
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-higher dose required on 2nd use of cocaine in order to obtain the same effect
-appears to dissipate rapidly (within 24 hours) |
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long-term/protracted tolerance
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studies involving cocaine and amphetamimes are inconsistent
-possible reverse tolerance or sensitization following repeated administration -increased sensitivity to the drug with repeated use |
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how dramatic is the withdrawal from stimulants?
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-no dramatic signs of withdrawal
-withdrawal is not life threatening physical symptoms |
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what are the primary symptoms of withdrawing from cocaine?
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depression
anxiety changes in appetite sleep disturbances craving |
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what are the stages of stimulant withdrawal
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-several days of severe cravings and exhaustion, alternating between agitation and depression
-increased sleep and food intake (especially with methamphetamines) -cravings last for weeks -experience moderate to sever depression -inability to experience normal pleasure (may continue for months to even years) -extinction phase-where repeated exposure to cues in environment lead to greater cravings which eventually extinguish due to witholding of reinforcement |
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when did children first begin to get treated with amphetamines?
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1937
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What stimulants are used on children?
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methylphenidate
(concerta, ritalin, daytrana) or amphetamines (adderal, vyvanse) |
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what are physical side effects of amphetamines given to children?
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insomnia, loss of appetite, weight loss, growth delays
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is there any medication to help cocaine users stop using or maintain abstinence?
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nope
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What are some treatments for stimulant addiction?
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cognitive behavioral therapy
-12 step program -contingency management program (very expensive) |
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what are some examples of opiates?
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opium
morphine heroine (a variety of other organic and synthetic opiate medications) |
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what is the process of extracting opium?
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Process:
-Flower blooms and peddles fall off, leaving a round seedpod the size of an egg -This is sliced open, to secrete a milky white sap -After drying, it forms a thick, gummy, brown substance called opium -->Consumed orally or by smoking it |
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who used opium in ancient history?
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Sumerians
Assyrians Egyptians Greeks Romans |
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Since it's discovery, what has opium been primarily used for?
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analgesic purposes
|
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Does the Koran ban opium?
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No, it bans alcohol & some other drugs but not opium
|
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how did opium get to india and china?
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9th century Arab traders spread the use of opium to India and China
-the practice of smoking opium began -dependence was first observed at the same time |
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when were the first edicts against opium released?
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1729
due to the increasing population becoming addicted to opium |
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what led up to the Opium Wars between the British and the Chinese in the middle of the 19th century?
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British continuing to import product into China despite the ban
|
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What is morphine and when was it synthesized?
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-its the major active chemical in opium
-10 times more potent than crude opium -became widely available in the mid 1800s |
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What wast the first war in which morphine was used?
|
the Civil War
-led to heavy abuse afterwards therefore termed the "solider disease" |
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What is Diacetylmorphine?
|
an alteration of morphine created in Britain in 1847
-unnoticed until 1898 when German's rediscovered the compound finding it twice as potent as morphine -->they called it Heroin |
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what was Heroin originally used for?
|
a cough suppressant and pain reliever
|
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which is more addictive?
Heroin or morphine? |
Heroin
|
|
1914 Harrison Narcotics Act
|
-did not outlaw opiates
-placed opiate use in the hands of physicians |
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Before the Harrison Act who were the main consumers of opiates?
|
it crossed all social classes
-after the Harrison Act it was mainly used by young, poor, uneducated males |
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how are opiates absorbed?
|
GI tract
nasal mucosa lungs intramuscularly subcataneously IV |
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where does opium collect?
|
it accumulates in the kidney, lungs, liver, spleen, digestive tract, muscles and brain
|
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does morphine penetrate the BB barrier?
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-only a small amount
|
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does heroin cross the BB barrier?
|
yes because it is lipid soluble
-once in the brain, heroin is converted into morphine |
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where are opiates metabolized?
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in the liver and excreted by the kidneys
|
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how rapid is the excretion of opiates?
|
fairly rapid
-90% within 1 day -traces remain for 2-4 days |
|
what do opiates act on?
|
endorphins
-all opiates appear to trigger activity within the brain's endorphin system (primarily associated with pain relief and pleasure) |
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what do opiate drugs mimic?
|
endorphin activity in the brain by stimulating endorphin receptors in the brain
|
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when are endorphins released?
|
following certain kinds of pain or stress
-battlefields or sporting events -people continue on even though they are hurt |
|
what are the three main opiate/endorphin receptors?
|
mu
kappa delta |
|
mu
|
widely distributed in the brain & spinal cord
-resulting in analgesia, positive reinforcement, cardiovascular and respiratory depression, cough control, nausea, vomiting & the brain stem |
|
delta
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more restricted than mu in areas like the substantia nigra, nucleus accumbens, olfactory areas etc
|
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kappa
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have distinct and limited distribution in sub-cortex areas regulating bodily functions like water balance, temp control and neuroendocrine function
|
|
kappa
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have distinct and limited distribution in subcortex areas regulating bodily functions like water balance, temperature control, neuroendocrine function
|
|
how are the hormonal systems of men and women affected by opiates
|
decrease in testosterone
delayed periods in women |
|
what are the acute effects of opium?
|
euphoria
drowsiness body warmth heavy feeling slurred speech poor coordination suppressed cough pinpoint pupils constipation impaired social interactions cognitive function impaired respiratory depression nausea |
|
does opiate use also interfere with cognitive functioning?
|
yes, learning and memory
|
|
what happens when a high dose of heroin is fatal?
|
immediate cause is usually respiratory failure
|
|
how high is the lethal dose for opiates?
|
-caused by interactions between opiates and alcohol as well as some other depressants
-synergy between depressant drugs and prescription opiates is dangerous as well. |
|
opiate
|
organic substance derived from the poppy plant
|
|
opioid
|
synthetic opiates (man-made)
|
|
what are the medical uses of opiates?
|
analgesic/pain relieving effects
-remains the most potent and selective pain reliever known to medicine -opiate pain relievers eliminate pain without causing unconsciousness |
|
what is Fentanyl?
|
a synthetic opioid drug
-100x more potent than morphine -used as a pain killer |
|
oxycontin
|
designed and marketed for patients with chronic pain
-associated with high abuse and addiction -should only be prescribed with sever pain and preferably short-term -reformulated to prevent individuals from crushing and snorting/injecting |
|
what effects do opiates have other than analgesic purposes?
|
-constipating effect, can be used to treat diarrea
-used to treat coughs |
|
can someone have a tolerance for opium?
|
opiate effects generally diminish unless user increases dose
-demonstrated in lab studies with humans and non-human primates |
|
dependance on opium
|
initial continued use may be the result of seeking out the initial reinforcement
-abusers frequently report that continued use never makes them feel nearly as high as before -some users continue to use simply to avoid the unpleasant symptoms of abstinence ** continued use negatively reinforces the behavior |
|
when do withdrawal symptoms generally appear
|
8-12 hours after last dose
|
|
what are the withdrawal symptoms of opiates?
|
flu-like symptoms
-runny nose tearing sweating irritability tremors --->symptoms get more sever over time and others appear: pupil dilation, anorexia, and goosebumps |
|
When do withdrawal symptoms for opiates peak?
|
48-72 hours
-BP & HR increase severe flu symptoms start including nausea, diarrhea, sneezing, excessive sweating & "pain in the bones" |
|
are psychological factors related to the dependance and relapse regarding opiates?
|
yes, there is very strong evidence of psychological factors
-ex: many vietnam vets were expected to relapse after the war but only 15% relapses. |
|
what is the treatment for opiate addiction?
|
a suitable dose of any opiate can alleviate withdrawal symptoms
-detoxification programs exploit this by administering the synthetic opioid drug methadone |
|
methadone
|
-opiate agonist (activates opiate receptors)
-higher doses inhibit the euphoric effects of other opiates -longer half-life than heroin -taken orally in outpatient treatment -rates of abuse remain high (overdose possible) |
|
harm reduction
|
refers to substituting a less harmful behavior for a more harmful one (ie methadone addiction in place of a heroin addiction)
|
|
how long do people stay on methadone?
|
some people maintain on methadone indefinitely
|
|
what happens to 90% of people who go through similar detoxification programs for opiates?
|
they relapse within 2 years of leaving the hospital
-most of those within 6 months |
|
naloxone
|
morphine molecule slightly modified in the 1960s
-modified molecule no longer produces the standard effects of morphine -it blocks the effects of opiates on the brain (ie opiate antagonist) -it gives heroin no effect -can also be used for opiate overdose |
|
vivitrol
|
-injectable opiate antagonist
-keeps people from experiencing the high of opiates -for use after complete detoxification -can cause opiate overdose |
|
synesthesia
|
sensory "crossing" sometimes caused by hallucinogenic compounds (seeing smells or sounds)
|
|
hallucination
|
sensory experience that does not come from external stimuli
|
|
illusion
|
mistaken perception of an external stimulus
|
|
delusion
|
fixed, false belief that is immune to reason or powerful evidence
|
|
what are the four categories of hallucinogens?
|
1. serotonergic hallucinogens (LSD)
2. methylated amphetamines (ecstacy) 3. anticholinergic (belladona & jimsonweed) 4. dissociative anesthetics (PCP) and Salvinorin (Saliva) |
|
LSD
|
-prototypical serotonergic hallucinogen
-found in a variety of plants in Central & South American as well as Africa |
|
When did psychedelics influence American/European culture?
|
virtually no impact until the 1960s
|