Related Experiment Video
Updated: Jul 13, 2026

Isolation of Adipose Derived Regenerative Cells for the Treatment of Erectile Dysfunction Following Radical Prostatectomy
Published on: December 28, 2021
Topical vasoactive cream in the treatment of erectile failure: a prospective, randomized placebo-controlled trial
1Department of Urology, Groote Schuur Hospital, University of Cape Town Medical School, South Africa.
Objective:
To repeat a previous study on the use of a topical treatment for erectile failure using a vasoactive cream.
Patients And Methods:
Fourteen patients with erectile failure who had previously responded to intracorporeal injection therapy were enrolled in a randomized placebo-controlled trial. They were given two topical applications, comprising either a cream containing aminophylline, isosorbide dinitrate and co-dergocrine mesylate, or a placebo cream of similar appearance containing no pharmacologically active ingredients. Each patient received 16 applications, eight of the active cream and eight placebo. The creams were applied alternatively on successive occasions and the results recorded.
Results:
The active cream, applied on 77 occasions, resulted in three good and 13 partial erections. The placebo cream, applied on 76 occasions, yielded four good and 13 partial erections.
Conclusions:
We were unable to reproduce the successful results reported by others; in the present study the active cream performed no better than placebo.
Related Concept Videos
Treatment for Pulmonary Arterial Hypertension: Phosphodiesterase Inhibitors
Among the PDE5 inhibitors, sildenafil (Revatio) stands out as a competitive and selective inhibitor. It operates by elevating cellular levels of cGMP and augmenting signaling through the cGMP-PKG pathway, promoting vasodilation. Upon oral...
Treatment for Pulmonary Arterial Hypertension: Endothelin Receptor Antagonists
ETs are synthesized through a complex sequence of enzymatic steps, primarily involving an enzyme referred to as endothelin-converting enzyme (ECE). Of...
Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists
These agonists bind to the IPR receptor situated on the plasma membrane of the pulmonary artery smooth muscle cells. This binding triggers a cascade of reactions known as the GS-AC-cAMP-PKA pathway. This pathway results in the relaxation of smooth muscle...
Male Sexual Response: Erection & Ejaculation
The blood filling the erectile tissues compresses the veins, which helps to prevent blood from leaving...

