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Cavernous oxygen tension and smooth muscle fibers: relation and function
A A Sattar1, G Salpigides, J J Vanderhaeghen
1Department of Urology, Erasme Hospital, Brussels, Belgium.
The Journal of Urology
|November 1, 1995
Summary
Low intracavernous oxygen tension may explain reduced smooth muscle fibers in impotent men. This study investigated oxygen levels and smooth muscle content in potent and impotent individuals.
Area of Science:
- Urology
- Andrology
- Physiology
Background:
- Erectile dysfunction (ED) is a common condition affecting men's health.
- Smooth muscle fiber alterations in the corpus cavernosum are implicated in ED.
- The role of intracavernous oxygen tension in these alterations requires further investigation.
Purpose of the Study:
- To investigate the effect of intracavernous oxygen tension on smooth muscle fiber changes in potent and impotent men.
- To compare oxygen tension and smooth muscle fiber percentages between different groups of men with erectile dysfunction.
Main Methods:
- Measurement of intracavernous and brachial oxygen tension (mm. Hg) during flaccidity and after prostaglandin E1 injection.
- Objective analysis of cavernous smooth muscle fiber percentage using immunohistochemical staining.
- Calculation of the cavernous brachial oxygen tension index.
Main Results:
- No significant difference in oxygen tension at flaccidity among groups.
- Significantly higher cavernous oxygen tension and index post-injection in controls versus ED groups (p < 0.01).
- Significantly higher smooth muscle fiber percentage in controls versus ED groups (p < 0.01), correlating with oxygen tension.
Conclusions:
- Reduced intracavernous smooth muscle fibers in impotent patients may be linked to low intracavernous oxygen tension.
- Oxygen tension is a potential factor in the pathophysiology of erectile dysfunction.