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Aspirin treatment improves bladder function after outlet obstruction in rabbits
A Schröder1, R M Levin, B A Kogan
1Department of Urology, Johannes Gutenberg-University, Mainz, Germany.
Urology
|October 13, 2001
Summary
Low-dose aspirin partially protected rabbit bladders from dysfunction caused by outlet obstruction. Aspirin treatment improved contractile responses in obstructed bladders, suggesting a potential protective role.
Area of Science:
- Urology
- Pharmacology
- Physiology
Background:
- Long-term bladder outlet obstruction leads to contractile and metabolic dysfunction.
- Decreased bladder perfusion is a significant contributing factor to this dysfunction.
- Acetylsalicylic acid (aspirin), a platelet aggregation inhibitor, is known to improve tissue perfusion.
Purpose of the Study:
- To investigate the potential of aspirin in mitigating bladder smooth muscle dysfunction following outlet obstruction.
- To assess the impact of aspirin on contractile function and tissue composition in an obstructed bladder model.
Main Methods:
- Ten male rabbits underwent 4 weeks of bladder outlet obstruction.
- Five rabbits received daily aspirin treatment (2 mg/kg/day) via osmotic pump.
- Contractile responses of bladder strips were measured, and detrusor tissue composition was analyzed.
Main Results:
- Aspirin treatment significantly increased bleeding time, confirming its antiplatelet effect.
- Obstructed bladders showed impaired contractile responses to stimulation.
- Aspirin treatment partially preserved contractile function, with responses to field stimulation and carbachol significantly improved compared to untreated obstructed bladders.
Conclusions:
- Low-dose aspirin demonstrated a significant protective effect against contractile dysfunction in obstructed bladders.
- Aspirin improved bladder responses to stimulation without altering the increase in bladder mass.
- Aspirin may serve as a protective agent against contractile dysfunction in obstructed bladders.