Associations between Erectile Dysfunction and Vascular Parameters: A Systematic Review and Meta-Analysis

Area of Science:

• Cardiovascular Research
• Urology
• Vascular Biology

Background:

• Erectile dysfunction (ED) is frequently associated with underlying vascular disorders.
• The precise relationship between ED and specific vascular parameters remains incompletely understood.
• Understanding these associations is vital for comprehensive patient management.

Purpose of the Study:

• To systematically synthesize and analyze the association between erectile dysfunction (ED) and various vascular parameters.
• To clarify the link between ED and measures such as intima-media thickness (IMT), flow-mediated dilation (FMD), and pulse wave velocity (PWV).

Main Methods:

• A meta-analysis of 57 studies involving 7,312 individuals was conducted.
• Data were sourced from PubMed, Web of Science, and Scopus, focusing on ED and vascular measures like ABI, PWV, IMT, NMD, FMD, AI, and EPCs.
• Study quality and result robustness were confirmed through Newcastle-Ottawa Scale assessment and sensitivity analyses.

Main Results:

• ED patients exhibited significantly higher intima-media thickness (IMT) and augmentation index (AI).
• Individuals with ED showed reduced flow-mediated dilation (FMD), nitrate-mediated dilation (NMD), and endothelial progenitor cells (EPCs).
• Increased pulse wave velocity (PWV) was observed in ED patients, while ankle-brachial index (ABI) showed no significant difference.

Conclusions:

• This meta-analysis confirms significant associations between erectile dysfunction and multiple vascular and endothelial dysfunction parameters.
• The findings underscore the critical importance of assessing and managing vascular health in patients diagnosed with ED.
• Early intervention for vascular dysfunction may play a key role in the prevention and treatment of ED.