neurobiology treatment opioid dependenceattcnetwork.org/userfiles/file/midamerica/neurobiology...
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Neurobiology and Treatment of Opioid Dependence
Nebraska MAT TrainingSeptember 29, 2011
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COCAINE
MARIJUANA
HEROIN/OPIOIDS
METHAMPHETAMINE
Top 5 primary illegal drugs for persons age 18‐29 entering treatment, %
Heroin or Prescription Opioids are the primary drug of abuse for more than 1 in 4 persons age 18‐30 seeking treatment
TEDS‐A
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% of persons coming to treatment for heroin addiction by age
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1: 12‐17
2: 18‐29
3: 30‐39
4: 40‐49
5: 50+
18‐29 year olds are the largest group represented among persons seeking treatment for heroin or opioid abuse, nearly 40%.
TEDS‐A
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None 1 2 3 4 5 or more
Prior treatment episodes for persons starting treatment for heroin dependence, 2009
SAMHSA (2009) Treatment Episodes Data Set.
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History of MAT for heroin dependence
• 1806 Scientists isolate morphine from opium• 1820 Scientists isolate codeine from opium• 1853 Introduction of the hypodermic syringe• 1898 introduction of heroin• Late 1800s marketing of opioid based “patent” medicines
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History of MAT for heroin dependence
1919 The Harrison Act and its interpretation1929 Congress establishes “narcotics hospitals” at Lexington and Fort Worth
‐ over 90% relapse rate1964 Mary Nyswander and Vincent Dole experiment with methadone
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Primary virtues of Methadone
• Long‐acting so that with a daily dose, a steady state of active opioids can be achieved
• Eliminates or severely reduces opioid craving• At proper doses, it can create an opioid blockade through cross‐tolerance
• People with opioid addiction can focus on the rest of their lives
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2002 Buprenorphine (Suboxone®/Subutex®)
• Long‐acting so that with a daily dose, a steady state of active opioids can be achieved
• Eliminates or severely reduces opioid craving• At proper doses, it can create an opioid blockade through antagonist effect
• A ceiling effect makes buprenorphine safer than methadone in preventing respiratory depression
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Myth # 2:• Methadone and Buprenorphine (“replacement medications”) just maintain a person’s addiction
Reality:• Methadone and Buprenorphine stabilize a client and free up their cognitive and intentional resources so that they can begin to engage in treatment
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INTOXICATION
WITHDRAWAL
Heroin Addiction
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INTOXICATION
WITHDRAWAL
Buprenorphine or Methadone Maintenance
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What’s the difference between addiction and physical dependence?
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DRUG USE
WITHDRAWAL
CRAVING
LOSS OF CONTROL
DECREASING WELL‐BEINGINCREASING STRESSMENTAL OBSESSION
LOSS OF COGNITIVE CONTROLCOMPROMISED VALUESCOMPROMISED INTENTIONSAMNESIA RE: CONSEQUENCESRATIONALIZATION OF USE
PHYSICAL RELIEFGUILT / SHAMERECALL OF CONSEQUENCESRECALL OF GOOD INTENTIONSFEELING OF HELPLESSNESSPANICKED DRUG‐SEEKING
LYING, CHEATING, STEALING
Cycle of Addiction
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Myth # 3:• A person is not really in recovery if they’re relying on medications
Reality:• A person is in recovery when they’re doing what they have to do one day at a time to avoid relapsing to the destructive cycle of addiction
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Effect of Stigma on Client Success
Receiving maintenance tx
USE DRUGS/ALC
“I am defective”
“I’m failing”
Depression/Shame CRAVINGS
MAKE THIS FEELING GO AWAY
“I’m succeeding”
Engage with others in treatment
Continue working the program
Confidence / happiness
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Methadone Maintenance reduces crime
The Effectiveness of Methadone Maintenance Treatment (p. 182), by J. C. Ball and A. Ross, 1991, New York: Springer-Verlag.
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SUBOXONE facilitates client engagement by reducing cravings and preventing withdrawal
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Buprenorphine Clonidine
Percen
tage
Treatment Group
Participants completing28‐day treatment
Participants who initiatednaltrexone treatment
Marsch, L.A., et al. Comparison of pharmacological treatments for opioid‐dependent adolescents: A randomized controlled trial. Archives of General Psychiatry 62(10):1157‐1164, 200
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SAMHSA Guidelines (TIP 40, 43)
Treatment with BuprenorphinePhase 1: Induction (1 week)Phase 2: Stabilization (1‐2 months)Phase 3: Maintenance (ongoing)Phase 4: Medically Supervised Withdrawal
optional (3 days to several weeks)Phase 5: Continued care (ongoing)
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Induction Phase (short‐acting opioids)
GoalTo find the minimum dose of methadone or buprenorphine at which the patient
1. discontinues or markedly diminishes use of other opioids
2. experiences no withdrawal symptoms, minimal or no side effects, and no uncontrollable cravings for drugs of abuse
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Stabilization Phase (1‐2 Months)
• Medical Treatment– Weekly assessments– Dosing adjustments as needed
• Goals– Elimination of objective evidence of opioid use (negative drug screens)
– Reduced self‐reported cravings and illicit opioid use– Self‐reported increase in opioid blockade such that self‐administered illicit opioids induce little or no euphoria
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Some issues to address in treatment*– Psychiatric comorbidity– Somatic consequences of drug use– Family and support issues– Structuring of time in pro‐social activities– Employment and financial issues– Legal consequences of drug use– Other drug and alcohol abuse
*Detailed treatment goals and phases available in TIP 43
Maintenance Phase (indefinite)
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Criteria for Medically Supervised Withdrawal• Patient’s desire to commence dose reduction• Patient’s commitment to becoming medication‐free
• Physician’s confidence that tapering would be successful
Medically Supervised Withdrawal optional (3 days to several weeks)
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Factors that should generally precede Medically Supervised Withdrawal• Extensive period of abstinence from illegal drugs and alcohol (1‐2 years)
• Stable housing• Stable source of income• No untreated or unstable co‐occurring psychiatric disorders
• Engagement in productive activity (e.g. employment, school, volunteering)
• Adequate psychosocial support• Absence of legal problems
Medically Supervised Withdrawal optional (3 days to several weeks)
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Rate of Dose Reduction• Reduction should be done gradually at a predetermined period or at a rate negotiated by the patient and the physician together
• Rapid dose reduction should be performed only in the presence of a compelling urgency (e.g. impending incarceration, foreign travel, job requirement)
Medically Supervised Withdrawal (3 days to several weeks)
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Continued Care (ongoing)
After Medically Supervised Withdrawal• Patients should be followed with psychosocial services
• Naltrexone/Vivitrol can be used as a key relapse prevention strategy
• Methadone or buprenorphine should be reintroduced if needed for continued progress
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Naltrexone and Vivitrol®
1950’s Abraham Wikler observes the phenomenon of “conditioned withdrawal”
1960’s Experiments with antagonist therapy ‐cyclazocine
1971 President Nixon creates the Special Action Office for Drug Abuse Prevention
1972 Congress puts aside money to research non‐addictive anti‐craving medications
1984 FDA approves naltrexone for opioid dependence2010 FDA approves 28‐depot naltrexone (Vivitrol®)
for opioid dependence
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Medications of Opioid Addiction
Methadone ‐ agonistSuboxone – partial agonistNaltrexone – antagonist
Vivitrol – 28‐day injection of naltrexone
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Methadone activates the opioid receptors to prevent withdrawal and prevents a person from getting “high” through cross‐tolerance
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Suboxone activates the opiate receptors to prevent withdrawal and acts as an antagonist to other opioid agonists, blocking their effect
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With both, the ADDICTION is curtailed through reduction in craving and compulsion, but physical dependence remains
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Naltrexone and Vivitrol® block opiate receptors to prevent an opiate “high” but do not activate the receptors
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Naltrexone and Vivitrol® prevent reinforcement of addictive drugs without causing physical dependence
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VIVITROL reduces client cravings, prevents reactivation of addiction and leads to improved treatment retention
(All participants received twice weekly relapse prevention therapy)
Comer, Sandra D., et al. Injectable, sustained‐release naltrexone for the treatment of opioid dependence. Archives of General Psychiatry 63(2):210‐218, 2006.
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% Opioid free weeks in 6 months
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Limitations of Vivitrol®
• No natural reward• Compliance is based entirely on internal motivation
• Risk of overdose after medication is discontinued
• Client must be completely opioid free prior to naltrexone induction
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Typical Suboxone taper
2‐8 weeks
8mg (5‐14 days)
6mg (5‐14 days)
4mg(5‐14 days)
2mg(5‐14 days)
Detox4 days
1/16
1/8
1/4
1/2
Full tablet (2 days)
Vivitrol injection
Typical Naltrexone taper3‐7 days
INCREASED STRUCTURE AND ACCOUNTABILITY
No self‐transportation No cash available 24‐hour companionship
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Which is the best medication?
As with any chronic disease or disorder, the correct medication depends on the characteristics of the
patient as well as their stage of treatment
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Ongoing Assessment
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Motivation
Stability
METHADONE‐ Strongest drug
reward‐ Highest level of
accountability
SUBOXONE‐ Moderate drug
reward‐ Moderate level of
accountability
VIVITROL‐ No drug reward‐ Moderate level of
accountability
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Principles of Individualized MAT
1. Educate regarding options. 2. Assess motivation and stability.3. Provide a clinical opinion4. Support client in developing a treatment plan
with concrete goals.
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Myth # 5:• “Eventually I’ll have to be strong enough to do it without medication!”
Reality:• Often chronic illnesses such as addiction require chronic medication management to prevent relapse
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The world without medication
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The world with medication
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Myth # 4:• When individuals are detoxified and abstinent through incarceration, they don’t need medical treatment upon release.
Reality:• Release from prison can be a death sentence for persons with untreated addiction
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EMOTION
MEMORY
REASONING
REWARD PROCESSING
STRESS RESPONSE
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Mortality after release from prison
Binswanger IA et al. N Engl J Med 2007;356:157-165
RR=12
RR=4 RR=3.2
RR=Relative Risk
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Myth # 6:• Addiction can best be treated with an intensive treatment episode followed by mutual support participation
Reality:• The episodic model of addiction treatment does not do justice to the chronic nature of the illness
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Long‐term recovery requires ongoing Relapse Prevention strategies
Lifelong Diabetes Relapse Prevention• Regular doctor’s visits• Monitor blood glucose levels• Plan meals carefully• Exercise / sleep regularly• Monitor “red flag” symptoms (deterioration of
vision, circulation)• Treat related physical problems• Take prescribed medication
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Lifelong Addiction Relapse Prevention• Regular support groups• Monitor emotional well‐being• Avoid high risk situations• Exercise / sleep regularly• Monitor “red flag” symptoms (cognitive
distortions, isolation)• Treat related psychological problems• Take prescribed medication
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Take Home Message
An individualized chronic care model for the treatment of addiction, including a full range of available medications and client options is the
key to improving treatment outcomes
This is the same model of care that is used for every other
chronic illness