Lesion mapping of stroke-related erectile dysfunction

Area of Science:

• Neuroscience
• Urology
• Neurology

Background:

• Acute ischemic stroke can impact male sexual function, specifically erectile function.
• The precise relationship between lesion location and stroke-related erectile dysfunction requires further investigation.

Purpose of the Study:

• To determine the association between cerebral ischemic lesion sites and stroke-related erectile dysfunction using voxel-based lesion mapping.
• To identify specific brain regions where lesions correlate with impaired erectile function post-stroke.

Main Methods:

• Voxel-based lesion mapping was employed in 52 male patients with first-ever ischemic strokes.
• Erectile function was assessed using the International Index of Erectile Function-5 questionnaire before and after stroke.
• Neuroimaging data were analyzed to correlate lesion sites with changes in erectile function scores, adjusting for confounding factors.

Main Results:

• 61.5% of patients experienced a decline in erectile function post-stroke.
• Deterioration in erectile function was not linked to patient age, stroke severity, infarct volume, or cardiovascular risk factors.
• Voxel-wise analysis revealed significant associations between stroke-related erectile dysfunction and lesions in the right occipito-parietal cortex, thalamus, left insula, and adjacent temporo-parietal areas.

Conclusions:

• Stroke-related erectile dysfunction is associated with specific lesion locations, particularly in the right occipito-parietal and thalamic regions, and the left insular and adjacent parieto-temporal areas.
• These brain regions are involved in integrating sensory information and processing visceral arousal states, suggesting a neural basis for stroke-induced erectile dysfunction.