Cited by 95Advanced Neuroimaging Techniques and ApplicationsSmoking Behavior and CessationPrenatal Substance Exposure Effects

Cigarette smoking and white matter microstructure

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Hudkins, Matthew, O’Neill, Joseph, Tobias, Marc C., Bartzokis, George, London, Edythe D.·2012·Psychopharmacology

Abstract

Rationale Diffusion tensor imaging has been used before in testing associations between cigarette smoking and white matter integrity, with inconsistent results. Published reports indicate higher fractional anisotropy (FA, a measure of linear water diffusion) in some brain regions and lower FA in others in adult smokers compared to nonsmokers. Adolescent smokers exhibited elevated FA at several brain regions and a positive correlation of FA in the genu corpus callosum with exposure to smoking (pack-years).Objective To help resolve prior discrepancies, we studied adults, sampling multiple brain regions, and testing for relationships to clinical features of nicotine dependence and exposure to smoking.Methods Brain MRI scans (1.5 T) were acquired, and FA and apparent diffusion coefficient (ADC, a measure of random diffusion) were assayed in corpus callosum and prefrontal white matter, corona radiata, internal capsule, cingulum bundle, and hippocampal perforant fibers in 18 smokers (33.7 ± 7.9 years of age) and 18 age- and gender-matched nonsmokers.Results ADC showed no group difference, but smokers had higher (4.3-21.1%) FA than nonsmokers. The differences were significant in right prefrontal white matter, cingulum, and genu corpus callosum. FA in several regions was negatively correlated with nicotine dependence or cigarettes/day.Conclusions Combined with earlier findings, these results suggest a model of changing trajectories whereby FA is higher with tobacco exposure during adolescence and declines with continued smoking in adulthood. This notion is supported by the observation that, at multiple sampling sites, participants who had started smoking earlier in life had higher FA than those who had started later.

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Authors
Hudkins, M., O’Neill, J., Tobias, M. C., Bartzokis, G., & London, E. D.
Affiliations
University of California, Los Angeles (US)
Corresponding author
O’Neill, Joseph
Venue
Psychopharmacology
Published
2012-01-04
Volume
221
Issue
2
Pages
285-295
ISSN
  • 0033-3158 (ISSN-L)
  • 1432-2072
OpenAlex
W1964156407
Cited by
95
References
54
Citations by year
2026: 2 · 2025: 2 · 2024: 6 · 2023: 5 · 2022: 8 · 2021: 7 · 2020: 5 · 2019: 8 · 2018: 7 · 2017: 10 · 2016: 7 · 2015: 5 · 2014: 12 · 2013: 6 · 2012: 5
FWCI
6.76
Type
journal article
Language
en
Open access
Locations
  • Psychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • U.S. Public Health Service (MOIRR00865)
  • National Institute on Drug Abuse (R03 DA20512, P20DA022539, R03DA020512, R21DA023192, R01DA020726)
  • National Center for Research Resources (M01RR000865)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
  • Health Sciences › Medicine › Physiology › Smoking Behavior and Cessation
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Prenatal Substance Exposure Effects
Keywords
cigarette smoking, white matter microstructure, fractional anisotropy, apparent diffusion coefficient, nicotine dependence, corpus callosum, prefrontal white matter, cingulum, diffusion tensor imaging, pack-years
MeSH terms
Adult, Age Factors, Brain, Brain Mapping, Cross-Sectional Studies, Female, Humans, Male, Middle Aged, Smoking, Case-Control Studies, Anisotropy, Young Adult, Diffusion Tensor Imaging

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