Altered interhemispheric resting-state functional connectivity in young male smokers

Area of Science:

• Neuroscience
• Neuroimaging
• Brain Connectivity

Background:

• Previous research indicates smokers have structural and functional brain changes.
• Homotopic functional connectivity is crucial for whole-brain functional coordination.
• Few studies have explored changes in young male smokers using voxel mirrored homotopic connectivity (VMHC).

Purpose of the Study:

• To investigate alterations in homotopic resting-state functional connectivity in young male smokers.
• To examine the relationship between connectivity changes and smoking duration (pack-years).

Main Methods:

• Utilized voxel mirrored homotopic connectivity (VMHC) analysis.
• Compared 27 young male smokers with 27 age- and sex-matched healthy non-smokers.
• Performed correlation analyses between VMHC values and pack-years.

Main Results:

• Young male smokers displayed decreased VMHC in the insula and putamen compared to controls.
• Increased VMHC was observed in the prefrontal cortex of young male smokers.
• Positive correlation between prefrontal cortex VMHC and pack-years; negative correlation between insula VMHC and pack-years.

Conclusions:

• Smoking disrupts homotopic resting-state functional connectivity in young males.
• Findings suggest specific brain regions' connectivity is affected by smoking intensity.
• This research enhances understanding of the neural underpinnings of smoking behavior.