Glymphatic system dysfunction in patients with occipital lobe epilepsy

Area of Science:

• Neuroscience
• Radiology
• Neurology

Background:

• Occipital lobe epilepsy (OLE) is a neurological disorder.
• The glymphatic system is crucial for brain waste clearance.
• Dysfunction of the glymphatic system is implicated in various neurological conditions.

Purpose of the Study:

• To investigate glymphatic system function in patients with OLE compared to healthy controls.
• To utilize the diffusion tensor image analysis along the perivascular space (DTI-ALPS) index for this assessment.

Main Methods:

• Retrospective study including 23 OLE patients and 30 healthy controls.
• Brain MRI and diffusion tensor imaging were performed.
• DTI-ALPS index was calculated using DSI Studio based on diffusivity values of projection and association fibers.

Main Results:

• No significant differences in age or sex distribution between groups.
• Patients with OLE showed altered diffusivities in projection and association fibers compared to controls.
• The DTI-ALPS index was significantly lower in OLE patients (1.421 ± 0.171) than in healthy controls (1.667 ± 0.271).

Conclusions:

• Glymphatic system function is impaired in patients with OLE, as indicated by a lower DTI-ALPS index.
• The DTI-ALPS index may serve as a valuable tool for assessing glymphatic system function in epilepsy patients.