Abstract

Erectile dysfunction (ED) is a frequent microvascular complication of type 2 diabetes mellitus (T2DM). Hormonal derangements such as hypogonadism and hyperestrogenism are common in T2DM. Our aim was to investigate the relationship between estrogens and ED in diabetic patients. We performed a retrospective study on 57 patients with T2DM suffering from ED. ED was assessed with the International Index of Erectile Function questionnaire (IIEF-5) and penile color-doppler ultrasound (PCDU). Blood tests included glycated hemoglobin, lipid profile, total testosterone (T), and estradiol (E2). E2 was negatively correlated with IIEF-5 score after correction for age, diabetes duration, BMI, HbA1c, LDL- and HDL-cholesterol, T and PSA (r = -0.457, p < 0.01). Patients in the higher E2 quartile, had statistically higher probability of severe ED (61.5%). In the same patients, the PCDU demonstrated a statistically longer Acceleration Time (120.0 ± 24.5, p = 0.048) indicating an impaired arterial flow. In diabetic patients, higher E2 is associated with worse erectile function and impaired cavernous arterial flow. Diabetic patients with high E2 are more prone to severe ED. It could be suggested to include estradiol measurement in the hormonal assessment of ED in patients with T2DM.

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