The relation between brain MRI lesions and depressive symptoms in multiple sclerosis

Area of Science:

• Neuroscience
• Neurology
• Psychiatry

Background:

• Multiple sclerosis (MS) is a chronic neurological disease.
• Depression is a common comorbidity in MS patients.
• The relationship between MS brain lesions and depression requires further investigation.

Purpose of the Study:

• To investigate the association between depression and the location and area of brain lesions in multiple sclerosis patients.
• To compare MRI findings between depressed and non-depressed MS patient groups.

Main Methods:

• Twenty MS patients (10 depressed, 10 non-depressed) were assessed using neuropsychological tests.
• Magnetic resonance imaging (MRI) was performed on all participants.
• Regional lesion area (mm2), side, and number of lesions in the frontal lobe, temporal lobe, and corpus callosum were measured.

Main Results:

• A statistically significant difference in regional frontal lesion area was found between depressed and non-depressed groups (p = 0.02).
• Depressed patients exhibited a greater lesion area in the right frontal lobe compared to the left.
• The highest number of lesions in depressed patients was observed in the right frontal lobe.

Conclusions:

• Depressive symptoms in MS patients are associated with the area and location of brain lesions.
• Frontal lobe lesions, particularly on the right side, may play a role in depression in MS.
• Further research is warranted to explore the neurobiological underpinnings of depression in MS.