Regeneration of hypogastric nerve using a polyglycolic acid (PGA)-collagen nerve conduit filled with collagen sponge proved electrophysiologically in a canine model.
The hypogastric nerve (HGN) is a sympathetic nerve in the peritoneal cavity and controls urinary and seminal functions. In this study, the regeneration of HGN was determined by using a new type of an artificial nerve conduit, polyglycolic acid (PGA)-collagen nerve conduit filled with collagen sponge in two dogs. A PGA-collagen nerve conduit (diameter=2 mm) was interposed in a 10 mm gap of the right HGN. The regeneration of the HGN was evaluated electrophysiologically 8 months after the operation. The intraluminal pressure of spermatic duct and the bladder neck were elevated 80 mmHg and 25 mmHg respectively by the stimulation across the regenerated HGN. The prostate contraction was also elicited. The responses diminished after the excision of the regenerated portion of HGN. These results proved the regeneration of HGN and this nerve conduit will be great help for patients who suffer from urinary and seminal disturbances.
Ito
T
T
Department of Bioartificial Organs, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan.
Nakamura
T
T
Suzuki
K
K
Takagi
T
T
Toba
T
T
Hagiwara
A
A
Kihara
K
K
Miki
T
T
Yamagishi
H
H
Shimizu
Y
Y
D000818:Animals; D001672:Biocompatible Materials / Q000627:therapeutic use*; D003094:Collagen / Q000627:therapeutic use*; D004285:Dogs; D004594:Electrophysiology; D007001:Hypogastric Plexus / Q000502:physiology* / Q000503:physiopathology; D020007:Implants, Experimental; D008297:Male; D009416:Nerve Regeneration / Q000502:physiology*; D019635:Neurosurgical Procedures / Q000379:methods; D011100:Polyglycolic Acid / Q000627:therapeutic use*; D023822:Tissue Engineering
D001672:Biocompatible Materials; D011100:Polyglycolic Acid; D003094:Collagen