Lori Birder led the review process.
Original Basic Science Article
Version of Record online: 26 SEP 2011
Copyright © 2011 Wiley Periodicals, Inc.
Neurourology and Urodynamics
Volume 31, Issue 1, pages 185–189, January 2012
How to Cite
Nomiya, M., Sagawa, K., Yazaki, J., Takahashi, N., Kushida, N., Haga, N., Aikawa, K., Matsui, T., Oka, M., Fukui, T., Andersson, K.-E. and Yamaguchi, O. (2012), Increased bladder activity is associated with elevated oxidative stress markers and proinflammatory cytokines in a rat model of atherosclerosis-induced chronic bladder ischemia. Neurourol. Urodyn., 31: 185–189. doi: 10.1002/nau.21191
Conflict of interest: none.
- Issue online: 23 JAN 2012
- Version of Record online: 26 SEP 2011
- Manuscript Accepted: 24 JUN 2011
- Manuscript Received: 18 FEB 2011
- chronic bladder ischemia;
- detrusor overactivity;
- oxidative stress;
- proinflammatory cytokines
To further characterize, in a rat model, the effects of atherosclerosis-induced chronic bladder ischemia on bladder function and associated changes in oxidative stress markers and proinflammatory cytokines.
Adult Sprague-Dawley male rats were divided into three groups (arterial endothelial injury: AI, sham, naïve). The AI group (n = 14) underwent endothelial injury of the iliac arteries and received a 2% cholesterol diet. The sham group (n = 12) underwent sham operation and received a 2% cholesterol diet. The naïve group (n = 12) received a regular diet. After 8 weeks, cystometrograms (CMG) without anesthesia or restraint were performed. In bladders from each group, oxidative stress markers (8-hydroxy-2′-deoxyguanosine: 8-OHdG; malondialdehyde: MDA) and proinflammatory cytokines (IL-8 like cytokine CXCL1/CINC-1, TNF-α, IL-6) were quantified. Histological examination of the iliac arteries was also performed.
At 8 weeks, the body and bladder wet weights were not significant different among the three groups. The micturition interval in the AI group decreased significantly compared with those in the other two groups, but maximum pressure during micturition did not change. The iliac arteries in the AI group revealed thickening of intima as well as diffuse media fibrosis at the sites of balloon injury. The levels of oxidative stress markers and proinflammatory cytokines were significantly higher in the AI than in the other groups.
Oxidative stress and inflammation may be key factors in the development of bladder overactivity in atherosclerosis-induced chronic bladder ischemia. Neurourol. Urodynam. 31:185–189, 2012. © 2011 Wiley Periodicals, Inc.