Hypoconnectivity within the cingulo-opercular network in patients with mild cognitive impairment in Chinese...

Area of Science:

• Neuroscience
• Cognitive Science
• Medical Imaging

Background:

• Resting-state brain activity forms functional networks crucial for cognition.
• Mild cognitive impairment (MCI) involves changes in brain network connectivity.
• Understanding alterations in the cingulo-opercular network (CON) and default mode network (DMN) in MCI is essential.

Purpose of the Study:

• To investigate differences in resting-state functional connectivity within and between the CON and DMN in individuals with MCI.
• To identify specific network connectivity patterns associated with MCI.
• To explore the relationship between cognitive function (ADAS-Cog) and network connectivity in MCI.

Main Methods:

• Resting-state functional connectivity analysis was employed.
• Participants included 45 individuals with MCI (ages 60-83) and 70 age-matched healthy controls.
• Cognitive function was assessed using the Chinese version of the Alzheimer's disease assessment scale-Cognitive subscale (ADAS-Cog).

Main Results:

• The MCI group exhibited significantly lower functional connectivity within the CON compared to healthy controls.
• No significant differences in functional connectivity were found within the DMN or between the CON and DMN in the MCI group.
• No correlation was observed between ADAS-Cog scores and within- or between-network connectivity metrics in individuals with MCI.

Conclusions:

• Hypoconnectivity within the CON circuitry may serve as a characteristic marker for MCI.
• These findings enhance the understanding of network dysfunction in MCI.
• The results could guide the development of more targeted therapeutic interventions for MCI.