Differences of connectivity between ESRD patients with PD and HD

Area of Science:

• Neuroscience
• Nephrology
• Medical Imaging

Background:

• End-stage renal disease (ESRD) affects multiple organ systems, including the brain.
• Dialysis, a treatment for ESRD, may impact neurological function.
• Understanding brain connectivity changes in different dialysis modalities is crucial.

Purpose of the Study:

• To compare structural and functional brain connectivity in ESRD patients on peritoneal dialysis (PD) versus hemodialysis (HD).
• To identify differences in brain network alterations based on the type of renal replacement therapy.

Main Methods:

• Diffusion tensor imaging (DTI) and resting-state functional magnetic resonance imaging (rs-fMRI) were used.
• Graph theoretical analysis was applied to structural and functional connectivity matrices.
• 40 ESRD patients (20 PD, 20 HD) and healthy controls were studied.

Main Results:

• PD patients showed significantly decreased global structural connectivity (efficiency) compared to controls.
• HD patients exhibited increased characteristic path length and decreased small-worldness in functional connectivity.
• No significant structural connectivity differences were found in HD patients compared to controls.
• No significant functional connectivity differences were found in PD patients compared to controls.

Conclusions:

• Brain network alterations differ between PD and HD treatments in ESRD patients.
• The findings suggest that the type of renal replacement therapy influences brain network integrity.