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Updated: Jul 4, 2026

Intracavernosal Pressure Recording to Evaluate Erectile Function in Rodents
Published on: June 6, 2018
The investigation of putative agents, using an in vitro model, to prevent cavernosal smooth muscle dysfunction during
Asif Muneer1, Selim Cellek, David J Ralph
1Wolfson Institute for Biomedical Research, University College London, Gower Street, London, UK. asif@amuneer.co.uk
Objective:
To investigate the effect of putative agents for preventing irreversible smooth muscle dysfunction, using an in vitro model of low-flow priapism (a condition conventionally managed using a combination of corporal blood aspiration and instillation of alpha-adrenergic agonists), as failure of detumescence results in a high incidence of erectile dysfunction.
Materials And Methods:
We investigated the effects of several agents (N-acetylcysteine, BayK 8644, glutathione, digoxin, calcium and N(omega)-nitro-l-arginine methyl ester) on the recovery of smooth muscle tone after exposure to 4 h of a combination of hypoxia, glucopenia and acidosis in corpus cavernosum isolated from rabbit.
Results:
After 4 h of ischaemia, none of the agents were able to prevent irreversible smooth muscle dysfunction.
Conclusion:
Prolonged low-flow priapism leads to smooth muscle dysfunction and fibrosis within the corpus cavernosum. When alpha-adrenergic agents fail to reverse the condition, surgical intervention is required. We showed that the administration of novel agents, including antioxidants, does not prevent smooth muscle dysfunction.
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