Location of somatic sensory neurons of the skin and dorsal nerve of the penis in rabbits.
- Author:
Bao-Jin WU
1
;
Hua JIANG
;
Wen-Peng LI
;
Ying-Fan ZHANG
;
Gang CHEN
Author Information
- Publication Type:Journal Article
- MeSH: Animals; Anterior Horn Cells; anatomy & histology; Biomarkers; Male; Neurons, Afferent; Neurons, Efferent; Penis; innervation; Rabbits; Random Allocation; Skin; innervation
- From: National Journal of Andrology 2007;13(1):17-20
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo trace the segmental distribution of somatic sensory neurons of the skin and dorsal nerve in the rabbitś penis.
METHODSThe experiment was performed on 8 adult male rabbits with the nerve tracing method of retrograde axonal transport of horseradish peroxidase (HRP), which was injected into the dermis around the penis and the dorsal nerve of the penis. The rabbits were sacrificed five days later to harvest the spinal cord segments and the dorsal root ganglia of lumbosacral segments for histological study.
RESULTSThe HRP tracing showed that a number of labeled HRP positive neurons appeared in spinal ganglia (S2 - S4) in all the rabbits, and distributed segmentally. The counts of the positive neurons different segments were: S2 (215.0 +/- 10.2) , S3 (242.2 +/- 8.3) and S4 (109.7 +/- 8.4) respectively, with statistically significant difference between the two groups.
CONCLUSIONThe rabbit's sensory nerve fibers in both the skin and the dorsal nerve of the penis are rooted in the S2-S4 segments of spinal ganglia, which distribute regularly.
