Lecture 2 and 3 Flashcards
What is the scope of the problem of drug overdose?
- The drug overdose epidemic continues to worsen in the U.S
- More than one million people have died since 1999 from a drug overdose
- 2021: 106,699 overdose deaths occurred in the U.S
- The age- adjusted rate of overdose deaths increased by 14% from 2020 (28.3 per 100,000) to 2021 (32.4 per 100,000)
What are dual diagnosis?
A dual diagnosis refers to two or more illnesses (one mental health diagnosis, and one substance use diagnosis) that occur at the same time, with no solid cause-and-effect relationship
- AKA: Co-occuring disorders
What are some examples of at risk populations with dual diagnosis?
- Bipolar disorder and AUD or OUD
- OCD and cannabis use disorder
What is the prevalence of dual diagnoses?
Over one third of adults aged 18 or older who had AMI also had an SUD in the past year
- Many aren’t properly treated
- Lack of affordable, evidence-based programs
What are some common dual diagnoses?
- PTSD and any drug use
- AUD and major depression -> dangerous
- AUD and bipolar
disorder -> dangerous because of increased hospitalization and suicide - Schizophrenia and nicotine use
- Cocaine use and anxiety disorders
What is the takeaway from the substance use: among adults aged 18 or older, by mental illness status, 2021?
Illicit drugs (50.2%) and marijuana (41.6%) are highest among individuals who have serious mental illness
What is the takeaway from substance use: among youths ages 12 to 17: by past year major depressive episode status, 2021
Illicit drugs (27.7) and marijuana (20.3) are highest among individuals who had a major depressive episode
What is NAS?
Neonatal Abstinence Syndrome refers to a condition in newborns who experience withdrawal symptoms after being exposed to drugs (typically opioids) during their mother’s pregnancy
What is the scope of the problem with NAS?
According to 2020 HCUP data, the occurrence of NAS ranged from a lot of one newborn diagnosed with NAS per 1,000 newborn hospital stays to a high of 43 newborns diagnoses with NAS per 1,000 newborn hospital stays
Do babies born with NAS have developmental problems?
YES.
Data suggest that infants with a diagnosis of NAS are more likely to need special education services in preschool and elementary school
What factors does addiction involve?
Biology
Environment - Are they available? Stress? Peers?
Age- Plasticity during the developmental years
Specific drug
Does everyone who uses drugs become addicted?
Not everyone who uses drugs becomes addicted
What quote does the prof really like?
“Heroin is stronger than any human bond, or any compelling argument”
What are the ways to measure addiction?
- Positron Emission Tomography
- Event-Related Potentials (ERPs)
- Magnetic Resonance Imaging
- The Neuropsychoimagaing Method
What is the response inhibition part of the iRISA model?
Ability to suppress actions that are inappropriate in a given context and that interfere with goal-driven behavior
What is the salience attribution part of the iRISA model?
The process by which certain stimuli come to selectivity garner one’s attention
What is dopamine involved with?
Involved in rewarding, reinforcing and remembering behaviors that sustain life
- Conditioning - when we eat dopamine is released
What does cocaine do to dopamine transporter?
The dopamine transporter usually reuptakes dopamine back into nerve terminals after signaling. Cocaine blocks dopamine transporter, preventing dopamine from being taken back into cells which increase dopamine
What role does the PFC play in decision-making processes?
- PFC plays a key role in optimizing the decision-making processes underlying goal-directed action selection
- Neuroimaging studies provide evidence of functional and structural abnormalities in orbitofrontal cortex (OFC) in substance dependent/addicted individuals
What does testing of the PFC show in correlation to gray matter?
Tests involving self-control and goal directed behavior show correlations with gray matter deficits in the PFC of addicted individuals
What does low front metabolism in “comparison subject” compared to cocaine abuser contribute to?
Low frontal metabolism may contribute to the loss of control seen in addiction
What are D2 receptors?
Also known as dopamine D2 receptors, are a type of protein found in the brain and other parts of the nervous system
- They help control the release and reuptake of dopamine, maintaining a balance in dopamine levels
What are decreases in D2 receptors associated with?
Decreases in D2 receptors are associated with decreases in prefrontal cortical activity
What are the deficits in decision making and decreased PFC in addicted participants? Playing cards
Less gray matter is correlated with playing bad cards. Medial orbital frontal cortex