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Published byClement Blankenship Modified over 9 years ago
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THIS LECTURE REVIEWS RISK FOR ALCOHOLISM SENSITIVITY (LR) AS RISK GENES & ENVIRONMENT RECENT DEVELOPMENTS
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THIS LECTURE REVIEWS RISK FOR ALCOHOLISM SENSITIVITY (LR) AS RISK GENES & ENVIRONMENT RECENT DEVELOPMENTS
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ALCOHOLISM RISK Multiple Characteristics and Genes
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COMPLEX GENETIC RISK Myocardial Infarction Type 2 Diabetes Cancer
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GENES AND ALCOHOLISM 4 x ↑ Risk for COAs 4 x ↑ Risk for Adopted COAs Higher Risk for ID Twins
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RISK FACTORS Alcohol Metabolizing Enzymes Level of Response (LR) Impulsivity Psychiatric Disorders
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ALCOHOL METABOLISM Alcohol ADH Acetaldehyde ALDH CO 2 + H 2 O
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THIS LECTURE REVIEWS RISK FOR ALCOHOLISM SENSITIVITY (LR) AS RISK GENES & ENVIRONMENT RECENT DEVELOPMENTS
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LR RATIONALE Youth Drink for Effects If Need More, Drink More Then Heavy Drinking Affects Peers Expectations Stress
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FHalc LR ALCOUTPEER EXPECT COPE PROJECTED
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SRE TIME FRAME: DRINKS 1st 5 Recent Heaviest NEEDED TO: Times 3 Mos Feel Effect Feel Dizzy or Slur Speech Stumble Fall Asleep
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LR IS GENETIC 1° Relatives.20 Unrelated.02 Twin Heritability 60%
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LR PREDICTS OUTCOME San Diego Study Australian Twins Danish Adoptees Colorado Twins COGA Kids ALSPAC Kids Pittsburgh Study
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LR IS: Genes and Environment Observed Early Predicts Diagnosis
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THIS LECTURE REVIEWS RISK FOR ALCOHOLOISM SENSITIVITY (LR) AS RISK GENES & ENVIRONMENT RECENT DEVELOPMENTS
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GENES FOR LR Animal Models n Candidates n Association
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CANDIDATE GENES Serotonin (5-HTT) K-Channels (KCN) GABA (GABRA6) Dopamine (DRD2/ANKK1)
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GENES LR & ALCOHOLISM SerotoninGABA A 6 BOTH LL+ SS+ LL SL SS Pro/Ser Pro/Pro Pro/Ser Pro/Pro LR %ALC -.89 -.30 00 57 21 12 -1.01 -.27 71 23 -1.29 +.03 100 00
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CANDIDATES GABRA6 COMT5HTT GABRG2 DRD2/ANKK1 ADORA GABRA5 DRD4NPY GABRA1 AUTS2EGFR GABRA2 KCNMA1 DGKZ ADH4 CHRNA5 GNASADH1B NMDA PKADH1C CYP2E
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KEY FACTORS FH EXPECT LR COPE PEER ALCOUT
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FHalc LR ALCOUTPEER EXPECT COPE PROJECTED
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THIS LECTURE REVIEWS RISK FOR ALCOHOLOISM SENSITIVITY (LR) AS RISK GENES & ENVIRONMENT RECENT : fMRI & PREVENTION
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Mailed Surveys UCSD Undergrads Clinical Interview (SSAGA) Alcohol Challenge fMRI Placebo Scan fMRI Alcohol Scan (High/Low LR subjects matched on demog and substance use)
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120 Subjects 240 fMRI Sessions 480 Sessions
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3 COGNITIVE TASKS Visual Working Memory Stop Signal Emotional Faces (Hariri) All Near Peak BAC Different ROIs LR groups = performance
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SAMPLE (N=120) Low LR High LR Age19.8 20.1 % Female52.652.6 Drink f/mo4.5 3.5 Drink/Day a 4.1 3.3 # Conduct Probs 0.41 0.31 60 min BAC0.06 0.06
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KEY FINDINGS fMRI Relates to LR Low LR and High LR Differ Placebo Alcohol Interactions Implications
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PREVENTION Teach About Risk Prevent Based on Risk
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THE STUDY Questionnaire To Students ~70% Response Select Matched Low and High LR Two Prevention Groups LR-Based State of the Art Four 45-min Internet Sessions Each
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USUAL DRINKS ACROSS TIME PREVIDEO 41 MO. FUCHANGE % LOW LR LR Gp 5.03.73.0-40 Usual Gp 5.24.44.3-17 HIGH LR LR Gp 5.13.23.4-33 Usual Gp 4.92.92.2-55
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PREVENTION: Develop for Specific Risk Evaluate in Subgroups
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THIS LECTURE REVIEWED RISK FOR ALCOHOLISM SENSITIVITY (LR) AS RISK GENES & ENVIRONMENT RECENT DEVELOPMENTS
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GENES AND ALCOHOLISM 4 x ↑ Risk for COAs 4 x ↑ Risk for Adopted COAs Higher Risk for ID Twins
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ALCOHOLISM RISK Multiple Characteristics and Genes
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RISK FACTORS Alcohol Metabolizing Enzymes Level of Response (LR) Impulsivity Psychiatric Disorders
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SRE TIME FRAME: DRINKS 1st 5 Recent Heaviest NEEDED TO: Times 3 Mos Feel Effect Feel Dizzy or Slur Speech Stumble Fall Asleep
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LR RATIONALE Youth Drink for Effects If Need More, Drink More Then Heavy Drinking Affects Peers Expectations Stress
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LR IS: Genes and Environment Observed Early Predicts Dx
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FHalc LR ALCOUTPEER EXPECT COPE PROJECTED
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BRAIN MECHANISMS Images relate to LR Low LR differ from high LR Placebo Alcohol Interactions
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PREVENTION Teach About Risk Prevent Based on Risk
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