Effect of renewed SS-cream on spinal somatosensory evoked potential in rabbits.
OBJECTIVE
The effect of a renewed SS-cream (RSSC) on the treatment of premature ejaculation (PE) was evaluated and compared with the original SS-cream (OSSC).


METHODS
Sixty male white New Zealand rabbits, weighing 2.5 kg-3.0 kg, were divided at random into 3 groups: the RSSC, OSSC and placebo groups. The spinal somatosensory evoked potential (SSEP) elicited by electric stimulation of the glans penis with disk electrode was investigated with an electrophysiograph (Poseidomn, Shanghai, China) before and 10, 30 and 60 min after drug or placebo application on the glans. The Onset and the N1 latencies and the amplitude of SSEP were recorded and analyzed.


RESULTS
There was no significant difference (P>0.05) in the mean Onset and N1 latency of SSEP among the 3 groups before drug application. Compared with the pre-application value, the mean Onset and N1 latencies in the RSSC and OSSC groups were significantly prolonged at 10, 30 and 60 min after treatment (P<0.05), while they were not significantly changed (P>0.05) in the placebo group. The mean Onset latency of RSSC at 10 and 30 min and that of OSSC at 30 min were significantly delayed (P<0.05) compared with the placebo group. The mean N1 latency of RSSC at 30 and 60 min and that of OSSC group at 30 min were also significantly delayed (P<0.05).


CONCLUSIONS
RSSC delays the latencies of SSEP, suggesting a local desensitizing effect on the sensory receptor of the glans penis dorsal nerve, which provides the potential for PE treatment. The desensitizing effect of RSSC is higher than that of OSSC.
Tian
Long
L
Department of Urology, Wuhan University Renmin Hospital, Wuhan, China.
Xin
Zhong-Cheng
ZC
Xin
Hua
H
Fu
Jie
J
Yuan
Yi-Ming
YM
Liu
Wu-Jiang
WJ
Yang
Chun
C
D000664:Amphibian Venoms / Q000008:administration & dosage*; D000818:Animals; D004338:Drug Combinations; D004542:Ejaculation / Q000187:drug effects; D004558:Electric Stimulation; D005073:Evoked Potentials, Somatosensory / Q000187:drug effects*; D008297:Male; D010413:Penis / Q000294:innervation; D010919:Placebos; D010936:Plant Extracts / Q000008:administration & dosage*; D011817:Rabbits; D012735:Sexual Dysfunction, Physiological / Q000188:drug therapy
D000664:Amphibian Venoms; D004338:Drug Combinations; D010919:Placebos; D010936:Plant Extracts; C485713:renewed severance secret