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158 Cards in this Set

  • Front
  • Back
What does Marijuana refer to?
the leafy top portion of the plants, including the leaves and buds
what does hashish refer to?
made from the dust of the resin produced by the plant for protection from the sun & heat to maintain hydration
where are the strongest stains grown?
warmer climates because they produce greater amounts of resin which generally has stronger psychoactive effects
When did American's start using cannabis as an all purpose medication?
1800s
-following the lead of European physicians
Was cannabis used recreationally during the 1800s?
To a limited extent
when were the first warnings fo the dangers of MJ use released?
1926
-the statistics were often fabricated
Harry Jacob Anslinger's War
-assistant commissioner of prohibition
-successfully encouraged many states to restrict marijuana
-1930, 16 states had marijuana statutes
-1937, almost all did
Anslinger's Marijuana Tax Act - 1937
-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
True or False, in the 1960's some judges would give life in prison for marijuana usage
True
in the 1960s, what could a 2nd offense in Georgia result in?
execution
in 1970, what did Congress do regarding Cannabis
the placed it into Schedule 1
What are the methods of marijuana use?
-ingested in food
-chew leaves
-inhalation
when was the first chemical analysis of cannibis?
1821
How many chemical compounds are found in cannabis?
400+
-60+ are unique to cannabis (cannabinoids)
When was the principal psychoactive agent of cannabis identified? Where & what is it?
1964
-Israel
-delta-9-tetrahydrocannabinol (THC)
What other components of cannabis are biologically active and what do they modify?
cannabidiol and cannabinol

-can modify THC effects
-tend not to be psychoactive by themselves
What is the term for a cannabis plant with the highest levels of potency and what are its characteristics?
Sinsemilla
10-30% THC
-seedless
-un-pollinated
-female plants
What are the recorded THC levels in hash?
Up to 60% THC
what do the pharamcokinetics (absorption) depend on for cannabis?
depends on the model of consumption
Pharmacokinetics of Inhalation
-absorption directly from lungs
-onset of action begins within minutes
how long does it take for the peak blood plasma concentrations when cannabis is smoked?
30-60 minutes
how long do the effects of smoking marijuana last?
2-4 hours
what does smoking joints expose the lungs to?
unfiltered tars, hydrocarbons & unknown contaminants
What are the pharmacokinetics of oral intake of cannabis?
-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
what does orally-consumed cannabis have to pass through before moving to the brain?
the liver
-liver clears much of the THC so less makes it to the brain
cannabinoids are soluble in what?
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
does THC cross the placental barrier?
yes
what is THC primarily metabolized by?
the liver
what is THC excreted through?
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)
what is the mechanism of action for cannabis
anandamide (sanskrit for Bliss)
-chemical appears to bind with the same receptors as cannabinoids
-effects of memory, movement, hunger and pain
is the Nucleus Accumbens impacted by cannabis?
Yes, but the effect is uch less than other drugs impacting this area (heroin, cocaine, meth)
-NA is related to pleasure
what are the 2 new brain cannabinoid receptors recently identified?
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
where does THC increase blood flow?
the cerebral cortex & deeper structures
When do tolerance effects become more likely?
following repeated administrations of THC & the dosage level of THC increases
-higher dose and greater period of use= higher likelihood
Is there an agreement in the scientific community regarding cannabis dependance?
no, there is evidence to suggest possible withdrawal symptoms, including irritability, sleep disturbance, nausea and restlessness
physiological effects of cannabis
-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
long-term physiological effects of cannabis
-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
long-term physiological effects (cardiovascular system)
individuals with compromised cardiovascular systems could conceivably have problems related to increased HR/BP
long-term physiological effects (immunte system)
-contradictory evidence
-can act as an immunosuppressant
long-term physiological effects (reproductive system)
-does disrupt the reproductive system in M/F (animal and human studies)
-decrease in sperm and sperm mobility
-non-ovulatory menstruation cycles
fetal effects of cannabis
-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
behavioral effects of cannabis
decreased psychomotor performance (dose related)
-relaxation & tranquility
-increased speech
-some experience more excitement
-keener senses
-decreased sensitivity to pain
-sexual behavior is variable
cognitive effects of cannabis
-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
emotional effects of cannabis
-carefree & relaxed
-euphoric, content, happy & excited
-laughter
-intensity is correlated with dose
-anxiety & dysphoria also occur
-suspiciousness & paranoia
psychosis and marijuana
marijuana users were found to have a 40% higher chance of developing a psychotic disorder later in life, compared to non-users
what is the therapeutic index for cannabis?
(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
what schedule is synthetic thc located in?
Schedule III
cachexia
-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
glaucoma
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
what are 2 legal prescriptions for "cannabis drugs"
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
Treatment for Cannabis "Addiction"
-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
coca bush, coca tree
low shrub with leaves containing powerful stimulant
-indigenous to south america
-used for centuries by Native tribes in that region, including Incas
When did researchers isolate the potent quality of coca and what was it?
1850s
-cocaine

-thus beginning its spread throughout Europe
how is cocaine extracted?
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
who was the 1st documented case of cocaine addiction in Europe?
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)
when did the cocaine epidemic begin?
-1880s
-cocaine became readily available over the counter in patent medicines with no prescription as well as prescription drugs
When did cocaine become a controlled substance?
1914 Harrison Narcotics Act
-US saw a decrease in popularity and use
when did freebasing of cocaine emerge?
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
Cocaine and the 1980s
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
Anti-Drug Abuse laws in the late 1980s
-more punitive of crack posession than powdered cocaine
-controversy due to disproportionately affecting young male african americans
Fair Sentencing Act 2010 (crack vs powder)
recognized the discrepancies in arrests an eliminated minimum sentencing requirements for small amount of crack
what is the intensity and duration of a cocaine high dependent on?
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)
Pregnancy and Cocaine
-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
The Harrison Narcotics Act (1914) decreased cocaine use and increased.....
amphetamine use
when were amphetamines 1st synthesized?
Germany 1887
What are some examples of amphetamines?
levoamphetamine

dextroamphetamine

methamphetamine
when were the first medical applications for amphetamines developed?
1920s
-cold, sinus,breathing problems, anti-depressant, narcolepsy, attention deficit/hyperactivity disorders
-used in WW2 by Allied & Axis forces for stimulant properties
When did amphetamines become popular in the US?
when physicians began prescribing methamphetamine to treat heroin addiction

-resulted in an explosion of abuse during 1960s
--especially injection
Controlled Substance Act of 1970
implemented due to the abuse of methamphetamines in the 60s
where were methamphetamines first synthesized?
Japan 1919
-1980s seen as a bikerdrug
-popularity rose during the 1990s, appearing on the West Coast and Hawaii
1996 Comprehensive Methamphetamine Control Act
increased penalties for manufacturing and trafficking meth
2006 Combat Methamphetamine Epidemic Act
limited sale of pseudophedrine and ephedrine
Bath Salts
-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
When was Mephedrone first syntehsized?
(Bath Salts)
1920s
-not used until 2000s in Israel as an insecticide
how are bath salts used?
-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
When were bathsalts banned?
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
Are stimulants all taken the same way?
no they are all administered and absorbed in a variety of ways
-all readily absorbed orally
intranasal absorption of stimulants
absorption is similar to oral absorbtion
-both take 10-15 minutes for drug action to begin
how long does it take for drug action to begin with IV administration of a stimulant?
within 30 seconds
What is the fasted form of administration for stimulants?
freebasing
what is the primary difference between cocaine and amphetamines?
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
How do stimulants effect the brain?
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
what are the initial effects of stimulants?
-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
-
acute physiological effects of stimulants
-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
behavioral effects of stimulants
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
stimulant effects (in HIGH doses)
-can lead to psychotic states
-paranoid delusions
-compulsive stereotyped behavior
-hallucinations
-stimulant psychosis can be treated like other psychotic disorders
Theraputic Index for Stimulants
-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
chronic use of cocaine results in what?
a tolerance to cocaine
what is acute tolerance?
-higher dose required on 2nd use of cocaine in order to obtain the same effect
-appears to dissipate rapidly (within 24 hours)
long-term/protracted tolerance
studies involving cocaine and amphetamimes are inconsistent
-possible reverse tolerance or sensitization following repeated administration
-increased sensitivity to the drug with repeated use
how dramatic is the withdrawal from stimulants?
-no dramatic signs of withdrawal
-withdrawal is not life threatening physical symptoms
what are the primary symptoms of withdrawing from cocaine?
depression
anxiety
changes in appetite
sleep disturbances
craving
what are the stages of stimulant withdrawal
-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
when did children first begin to get treated with amphetamines?
1937
What stimulants are used on children?
methylphenidate
(concerta, ritalin, daytrana)
or
amphetamines
(adderal, vyvanse)
what are physical side effects of amphetamines given to children?
insomnia, loss of appetite, weight loss, growth delays
is there any medication to help cocaine users stop using or maintain abstinence?
nope
What are some treatments for stimulant addiction?
cognitive behavioral therapy
-12 step program
-contingency management program (very expensive)
what are some examples of opiates?
opium
morphine
heroine
(a variety of other organic and synthetic opiate medications)
what is the process of extracting opium?
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
who used opium in ancient history?
Sumerians
Assyrians
Egyptians
Greeks
Romans
Since it's discovery, what has opium been primarily used for?
analgesic purposes
Does the Koran ban opium?
No, it bans alcohol & some other drugs but not opium
how did opium get to india and china?
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
when were the first edicts against opium released?
1729
due to the increasing population becoming addicted to opium
what led up to the Opium Wars between the British and the Chinese in the middle of the 19th century?
British continuing to import product into China despite the ban
What is morphine and when was it synthesized?
-its the major active chemical in opium
-10 times more potent than crude opium
-became widely available in the mid 1800s
What wast the first war in which morphine was used?
the Civil War
-led to heavy abuse afterwards therefore termed the "solider disease"
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
what was Heroin originally used for?
a cough suppressant and pain reliever
which is more addictive?
Heroin or morphine?
Heroin
1914 Harrison Narcotics Act
-did not outlaw opiates
-placed opiate use in the hands of physicians
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
how are opiates absorbed?
GI tract
nasal mucosa
lungs
intramuscularly
subcataneously
IV
where does opium collect?
it accumulates in the kidney, lungs, liver, spleen, digestive tract, muscles and brain
does morphine penetrate the BB barrier?
-only a small amount
does heroin cross the BB barrier?
yes because it is lipid soluble
-once in the brain, heroin is converted into morphine
where are opiates metabolized?
in the liver and excreted by the kidneys
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)
what do opiate drugs mimic?
endorphin activity in the brain by stimulating endorphin receptors in the brain
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
more restricted than mu in areas like the substantia nigra, nucleus accumbens, olfactory areas etc
kappa
have distinct and limited distribution in sub-cortex areas regulating bodily functions like water balance, temp control and neuroendocrine function
kappa
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