The changes of brain functional networks in young adult smokers based on independent component analysis
- 1 April 2021
- journal article
- research article
- Published by Springer Science and Business Media LLC in Brain Imaging and Behavior
- Vol. 15 (2), 788-797
- https://doi.org/10.1007/s11682-020-00289-4
Abstract
Intrinsic functional connectivity (FC) networks, including the default mode network (DMN), central executive network (CEN), and salience network (SN), have been implicated in nicotine addiction. However, litter evidence exists about the abnormalities in the three networks in young adult smokers. Forty-eight young adult smokers and 49 age- and gender-matched non-smokers were recruited in the present study. Resting-state functional magnetic resonance imaging (fMRI) data were analyzed by a combination of independent component analysis (ICA) and dual regression to identify potential differences of FC patterns in the DMN, CEN, and SN. Compared to non-smokers, young adult smokers showed enhanced FC of the left posterior cingulate cortex (LPCC), right medial prefrontal cortex (RMPFC) and right precuneus within the DMN network, of the right dorsolateral prefrontal cortex (DLPFC) within the right CEN, and of the left anterior insula (LAI) within the SN. We also found increased FC between the DMN, CEN and key node of the SN (anterior insula, AI). Correlation analysis showed that the increased FC within the networks was significantly correlated with smoking behaviors (pack-years, smoking duration, FTND, first smoking age, and number of cigarettes per day). Our findings may provide additional evidence for conceptualizing the framework of nicotine addiction as a disease of intercommunicating brain networks.Funding Information
- the Fundamental Research Funds for the Central Universities (JB151204)
- the program for Young adult Talents of Science and Technology in Universities of Inner Mongolia Autonomous Region (NJYT-17-B11)
- the Natural Science Foundation of Inner Mongolia (2017MS(LH)0814, 2018LH08079)
- the program of Science and Technology in Universities of Inner Mongolia Autonomous Region (NJZY17262)
- The Natural Science Basic Research Plan in Shaan-xi Province of China (2018JM7075)
- US National Institutes of Health, Intramural Research program (Y1AA3009)
- National Natural Science Foundation of China (81571753, 81871430, 31800926, 81470816, 81471737)
- National Natural Science Foundation of China (81571751, 81701780, 81401478, 81401488)
- National Natural Science Foundation of China (81871426)
- National Natural Science Foundation of China (61771266)
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