From symptomatic relief to restorative medicine: a comprehensive review of diabetic erectile dysfunction

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Diabetic erectile dysfunction (DMED) represents one of the most prevalent and debilitating complications in men with diabetes, characterized by a complex multifactorial pathogenesis and often suboptimal response to conventional therapies. This review comprehensively summarizes the current understanding of DMED mechanisms and evaluates the evolving therapeutic landscape. We highlight oxidative stress as a pivotal central hub triggered by hyperglycemia, which orchestrates a cascade of detrimental events. Beyond classical endothelial dysfunction and RhoA/ROCK pathway activation, we discuss emerging pathogenic targets, including the activation of the NOD-like receptor pyrin domain-containing protein 3 (NLRP3) inflammasome leading to pyroptosis, ferroptosis-induced smooth muscle loss, and epigenetic dysregulation (e.g., upregulated miR-155). Furthermore, the "gut-penis axis" is explored as a novel link between microbiota dysbiosis and systemic inflammation affecting erectile function. Critically, this review assesses the paradigm shift from symptomatic management to restorative therapies. While phosphodiesterase type 5 inhibitors (PDE5i) remain the first-line treatment, they exhibit a non-response rate of approximately 40-50% in diabetic men due to severe neuropathy and endothelial damage. Consequently, emerging regenerative modalities are gaining prominence. We evaluate the efficac

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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