Individual variability in alcohol sensitivity is among the most widely studied endophenotypes for alcohol dependence. However, little is known about brain mechanisms relevant for alcohol sensitivity. Research on human alcohol sensitivity phenotypes has often relied on self-report measures and conventional oral alcohol administration paradigms, both of which may introduce considerable measurement error, thus decreasing sensitivity for detecting genetic and neural correlates. The proposed study will examine neural markers of alcohol sensitivity in the context of an alcohol challenge paradigm that incorporates highly controlled intravenous ethanol infusion. The broad aims of this proposal include a) developing our approach for integrating fMRI and infusion;b) examining feasibility of studying neural correlates of alcohol sensitivity in this context;and c) estimating effect sizes to inform power analyses for future studies. Heavy-drinking young adults will participate in two infusion sessions: a baseline """"""""acclimation"""""""" session and an fMRI session. Physiologically- Based Pharmacokinetic (PBPK) modeling will be used to establish a peak target blood alcohol concentration (BAC) of 0.06 1 0.005 g% within 15 minutes. This BAC will be maintained (clamped) for 90 minutes. Alcohol sensitivity indices will include traditional self-report measures;heart rate response during infusion;and serial measures of subjective intoxication (stimulation/sedation) across the session. We will examine these indicators in relation to BOLD responses during tasks that engage incentive motivation and cognitive control networks, incorporating repeated assessments across the BAC time course. Both traditional and brain-based measures of alcohol sensitivity will be examined in relation to self-reported drinking. By examining neural phenotypes in the context of acute alcohol exposure, we hope to identify brain-based alcohol sensitivity phenotypes that are potentially more sensitive to genetic variation and to behavioral outcomes as compared to traditional measures. )

Public Health Relevance

Physiological sensitivity to alcohol is demonstrated to predict future risk for alcohol dependence. However, little is known about brain mechanisms relevant for alcohol sensitivity. This research aims to examine brain-based measures of alcohol sensitivity that could be useful as biomarkers for the risk for alcohol dependence.

Agency
National Institute of Health (NIH)
Institute
National Institute on Alcohol Abuse and Alcoholism (NIAAA)
Type
Exploratory/Developmental Grants (R21)
Project #
5R21AA020304-02
Application #
8269633
Study Section
Health Services Research Review Subcommittee (AA)
Program Officer
Matochik, John A
Project Start
2011-06-01
Project End
2014-05-31
Budget Start
2012-06-01
Budget End
2014-05-31
Support Year
2
Fiscal Year
2012
Total Cost
$196,448
Indirect Cost
$77,698
Name
The Mind Research Network
Department
Type
DUNS #
098640696
City
Albuquerque
State
NM
Country
United States
Zip Code
87106
Ye, Fang; Hu, Youtian; Yu, Weiwei et al. (2016) The Scorpion Toxin Analogue BmKTX-D33H as a Potential Kv1.3 Channel-Selective Immunomodulator for Autoimmune Diseases. Toxins (Basel) 8:115
Wardell, Jeffrey D; Ramchandani, Vijay A; Hendershot, Christian S (2016) Drinking Motives Predict Subjective Effects of Alcohol and Alcohol Wanting and Liking During Laboratory Alcohol Administration: A Mediated Pathway Analysis. Alcohol Clin Exp Res 40:2190-2198
Hao, Tong; Zhou, Jin; Lü, Shuanghong et al. (2016) Fullerene mediates proliferation and cardiomyogenic differentiation of adipose-derived stem cells via modulation of MAPK pathway and cardiac protein expression. Int J Nanomedicine 11:269-83
Hendershot, Christian S; Claus, Eric D; Ramchandani, Vijay A (2016) Associations of OPRM1 A118G and alcohol sensitivity with intravenous alcohol self-administration in young adults. Addict Biol 21:125-35
Fan, Linlin; Sun, Jian; Zhou, Meifeng et al. (2016) DRAMP: a comprehensive data repository of antimicrobial peptides. Sci Rep 6:24482
Claus, Eric D; Hendershot, Christian S (2015) Moderating effect of working memory capacity on acute alcohol effects on BOLD response during inhibition and error monitoring in male heavy drinkers. Psychopharmacology (Berl) 232:765-76
Hendershot, Christian S; Wardell, Jeffrey D; Strang, Nicole M et al. (2015) Application of an alcohol clamp paradigm to examine inhibitory control, subjective responses, and acute tolerance in late adolescence. Exp Clin Psychopharmacol 23:147-58
Hendershot, Christian S; Cunningham, John A; George, William H (2013) Deception in human experimental and public health research on alcohol problems. Am J Bioeth 13:48-50
Feng, Jing; Hu, Youtian; Yi, Hong et al. (2013) Two conserved arginine residues from the SK3 potassium channel outer vestibule control selectivity of recognition by scorpion toxins. J Biol Chem 288:12544-53
Yao, Chun; Zhuang, Hongqin; Du, Pan et al. (2013) Role of Fas-associated death domain-containing protein (FADD) phosphorylation in regulating glucose homeostasis: from proteomic discovery to physiological validation. Mol Cell Proteomics 12:2689-700

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