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Published on: August 6, 2013
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Increased striatal functional connectivity is associated with improved smoking cessation outcomes: A preliminary
Chao Wang1, Peiyu Huang1, Zhujing Shen1
1Department of Radiology, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
Addiction Biology
|May 22, 2020
Summary
Increased striatal functional connectivity (rsFC) is linked to successful smoking cessation. This study found that improved rsFC in brain reward areas like the nucleus accumbens predicts better outcomes in nicotine addiction treatment.
Area of Science:
- Neuroscience
- Addiction Research
- Neuroimaging
Background:
- The striatum is central to reward processing and nicotine addiction.
- Understanding functional connectivity changes in the striatum during smoking cessation is crucial but unclear.
Purpose of the Study:
- To investigate if different smoking cessation outcomes (relapse vs. non-relapse) correlate with distinct changes in striatal functional connectivity.
- To explore the relationship between varenicline treatment, striatal connectivity, and smoking cessation success.
Main Methods:
- Utilized magnetic resonance imaging (MRI) to assess resting-state functional connectivity (rsFC) in 30 treatment-seeking smokers before and after a 12-week varenicline treatment.
- Employed repeated measures ANCOVA to analyze changes in rsFC, comparing relapsers (n=14) and non-relapsers (n=16).
Main Results:
- Significant interaction effects in rsFC were found between the nucleus accumbens (NAc) and areas like the orbitofrontal cortex (OFC), insula, and inferior frontal gyrus (IFG).
- Also observed were interactions between the putamen and precuneus.
- Relapsers showed decreased striatal rsFC post-treatment, while non-relapsers exhibited opposite longitudinal changes.
Conclusions:
- Increased striatal functional connectivity is associated with successful smoking cessation outcomes.
- These findings highlight striatal functional circuits as potential therapeutic targets for enhancing nicotine addiction treatment efficacy.
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