The endothelium forms a connection between the blood in circulation and lymph in the lumen and other parts of the wall of the vessels.

As a result, the endothelium is a thin layer of single-layered flat cells. The endothelial cells that are in touch with the blood are known as the vascular endothelial cells and those that are in touch with the lymph are referred to as lymphatic endothelial cells.  The whole circulatory system is lined on the inner side by the vascular endothelial cells and this applies to the heart right down to the tiniest blood vessels.

Endothelium and Erectile Dysfunction

Erectile dysfunction is one of the biggest problems men face globally. In physiology, erection itself is nothing but a function of the blood vessels as it is when they dilate that the flow of blood increases and the penis become erect and rigid. For this reason, the endothelium is very fundamental to the understanding of erectile dysfunction.

The layer formed by the endothelium plays a very important role when it comes to the vasodilation and other hemodynamic processes. As a result of the importance of this structure, scientists have been able to demonstrate the link between erectile dysfunction and the quality of the endothelium. That said, several factors can lead to dysfunction of the endothelium and some of the most important of these factors are the ones called vascular risk factors (also referred to as VRFs). These factors have been implicated increasing the predisposition of men to conditions like erectile dysfunction and cardiovascular disease.

At the moment, the latest research shows that erectile dysfunction is an early pointer to a more serious vascular systemic disorder and hence, a proper check of the integrity of the endothelium in people suffering from erectile dysfunction should be paramount.

Many methods have been designed to check how functional the endothelium is. One of these methods is the Penile Nitric Oxide Release Test (also known as PNORT). From the studies done so far, it is apparent that the loss of function in the endothelium is triggered by the vascular risk factors mentioned above.

Dysfunction of the endothelium is often triggered by outlined risk factors include oxidative stress and damaged endothelial functions. It is this dysfunction of the endothelium that is diagnosed by the physicians as erectile dysfunction. To further show the importance of the endothelium in this condition, the test that is used for diagnostic assessment is the Penile Nitric Oxide Release Test (PNORT).

As the endothelium is an integral part of the blood vessels that are responsible for the dilation that maintains the erection, it directly has an impact on the medical condition. Dysfunction in the erectile tissue of the penis is directly linked with the integrity of the endothelium and it is a process that develops over time. Once again, because the endothelium is a main component in the physiology, there is a weakening in the relaxation of the smooth muscles involved. Research studies from the National Institute of Health in the United States of America showed that the endothelium is involved in about 75% of erectile dysfunction cases.

Vascular lesions are responsible for almost three-quarters of erectile dysfunction have to do with vascular lesions. Hence, there is an apparent and very clear correlation between the integrity of the endothelium and erectile dysfunction. In other words, endothelial dysfunction often leads to erectile dysfunction.

References

  1. https://www.researchgate.net/publication/26288866_The_Endothelial-Erectile_Dysfunction_Connection_An_Essential_Update
  2. https://www.issm.info/news/reviews-reports/the-endothelium-and-erectile-dysfunction/
  3. https://www.ncbi.nlm.nih.gov/pubmed/16049523
  4. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1502382/
  5. https://onlinelibrary.wiley.com/doi/full/10.1002/j.1939-4640.2003.tb02743.x
  6. https://www.nature.com/articles/ijir200846
  7. https://www.nature.com/articles/3901371
  8. https://www.medscape.org/viewarticle/555273_7