Three Measures of Tobacco Dependence Independently Predict Changes in Neural Structure
Authors
King, Jean A.Ursprung, W. W. Sanouri A.
DiFranza, Joseph R.
Huang, Wei
Zhang, Nanyin
Kennedy, David N.
Ziedonis, Douglas M.
Document Type
Poster AbstractPublication Date
2013-05-08Keywords
Neuroscience and NeurobiologyPsychiatry
Psychiatry and Psychology
Substance Abuse and Addiction
Translational Medical Research
Metadata
Show full item recordAbstract
Studies have demonstrated moderate correlations between fractional anisotropy (FA, a measure of white matter organization), and Fagerström Test for Nicotine Dependence (FTND) scores in various white matter brain structures (r=-.52 to -.64). FA increases with smoking in adolescents, but in adult smokers FA declines with the progression of physical dependence. We examined correlations between FA and 3 measures of tobacco dependence: the FTND, Levels of Physical Dependence (PD), and the Hooked on Nicotine Checklist (HONC). The latter 2 measures assess only symptoms rather than behaviors, based on an assumption that a direct assessment of subjective symptoms will better reflect underlying biological conditions than behaviors that might be constrained by sociocultural factors.We compared white matter FA in 8 smokers and 10 nonsmokers and plotted the location of maximal correlation between FA and each dependence measure. FA trended higher in smokers than nonsmokers in the anterior cingulum bundle (ACb) (p=0.05). Among smokers, plots of the maximal correlation for all 3 measures fell within a circumscribed area of the left ACb, showing excellent concordance of results across measures. The maximal correlation with FA was r= -.78 for the FTND, -.85 for Levels of PD, and -.96 for the HONC (pDOI
10.13028/stm9-mp35Permanent Link to this Item
http://hdl.handle.net/20.500.14038/27819Rights
Copyright the Author(s)Distribution License
http://creativecommons.org/licenses/by-nc-sa/3.0/ae974a485f413a2113503eed53cd6c53
10.13028/stm9-mp35