Prostaglandin E1 with MUSE dose-response study in man
HE Yi-ping
(Department of Urology, Nanling Hospital of Shenzhen, Shenzhen,Guandong,518123)
YANG Luo-yan
(Department of Urology, the Second Affiliated Hospital, Hunan Medical University)
Abstract:Purpose: To investigate the feasibility, safety and relationship of the dose-effectiveness of prostaglandin E1 (PGE1) with medicated urethral system for erection (MUSE). Methods: A single blind, placebo-controlled study of increasing dosages (150~1 200 μg) was done. 24 men with impotence were monitored in real time for 2 hours after MUSE, and penile erect angle (PEA), tumescence and duration of erection were measured. Results: The initial response to escalating doses of PGE1 from 150 μg to 600 μg demonstrated a steep dose-dependent increase, at greater than 600 μg indicating a nonliner response. More than 80% of the patients attained the maximal response at doses of 600 μg or less and less than 20% benefited from a further increase. Conclusions: The effects of PGE1 with MUSE appear to limit to 600 μg or less, since larger amounts offer little additional benefit.
Key words:Impotence Prostaglandin E1 Intraurethral administration▲