TY - JOUR
T1 - Evaluation of two techniques of partial urethral obstruction in the male rat model of bladder outlet obstruction
AU - Melman, Arnold
AU - Tar, Moses
AU - Boczko, Judd
AU - Christ, George
AU - Leung, Albert C.
AU - Zhao, Weixin
AU - Russell, Robert G.
PY - 2005/11
Y1 - 2005/11
N2 - Objectives. To perform a comparison to determine which of two methods of partial urethral ligation produces the most consistent outcome and fewest side effects. Such a study has not been previously reported. Partial urethral ligation is a means of causing reproducible bladder outlet obstruction. In the male rat model, partial urethral obstruction can be performed either by perineal incision and bulbous urethral ligation or retropubic incision and midprostatic obstruction. Methods. Fifteen male Sprague-Dawley rats were studied. Five were selected for bulbous urethral obstruction through a perineal incision, five for midprostatic obstruction using a retropubic approach, and five for a sham operation through a perineal incision. Results. The operative time was shorter and morbidity lower with the perineal approach compared with the retropubic approach. Inflammation or infection, or both, were seen in the prostate, bladder, proximal urethra, ureters, and kidneys in the rats in which a midprostatic obstruction was performed. The proximal urethra and prostate were mildly inflamed in those rats that underwent bulbous obstruction. Sham-operated rats exhibited mild prostatitis only. Conclusions. The perineal approach to the bulbous urethra is the method of choice for creating a partial urethral obstruction model of bladder outlet obstruction in the male rat.
AB - Objectives. To perform a comparison to determine which of two methods of partial urethral ligation produces the most consistent outcome and fewest side effects. Such a study has not been previously reported. Partial urethral ligation is a means of causing reproducible bladder outlet obstruction. In the male rat model, partial urethral obstruction can be performed either by perineal incision and bulbous urethral ligation or retropubic incision and midprostatic obstruction. Methods. Fifteen male Sprague-Dawley rats were studied. Five were selected for bulbous urethral obstruction through a perineal incision, five for midprostatic obstruction using a retropubic approach, and five for a sham operation through a perineal incision. Results. The operative time was shorter and morbidity lower with the perineal approach compared with the retropubic approach. Inflammation or infection, or both, were seen in the prostate, bladder, proximal urethra, ureters, and kidneys in the rats in which a midprostatic obstruction was performed. The proximal urethra and prostate were mildly inflamed in those rats that underwent bulbous obstruction. Sham-operated rats exhibited mild prostatitis only. Conclusions. The perineal approach to the bulbous urethra is the method of choice for creating a partial urethral obstruction model of bladder outlet obstruction in the male rat.
UR - http://www.scopus.com/inward/record.url?scp=27744432877&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=27744432877&partnerID=8YFLogxK
U2 - 10.1016/j.urology.2005.06.070
DO - 10.1016/j.urology.2005.06.070
M3 - Article
C2 - 16286152
AN - SCOPUS:27744432877
SN - 0090-4295
VL - 66
SP - 1127
EP - 1133
JO - Urology
JF - Urology
IS - 5
ER -