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Neurogenically mediated cystitis in rats: an animal model
R Doggweiler1, L Jasmin, R A Schmidt
1Department of Urology, University of Colorado Health Science Center, Denver, USA.
The Journal of Urology
|September 29, 1998
Summary
Pseudorabies virus (PRV) induced spinal cord inflammation in rats led to hemorrhagic cystitis. This suggests neurogenic pathways mediate bladder changes, even without direct viral presence in the bladder.
Area of Science:
- Neuroscience
- Urology
- Virology
Background:
- Pseudorabies virus (PRV) is utilized for mapping spinal cord circuitry.
- Investigating central nervous system (CNS) regulatory pathways for the lower urinary tract revealed unexpected hemorrhagic changes in the bladder.
Purpose of the Study:
- To explore the relationship between PRV-induced spinal cord changes and the development of hemorrhagic cystitis.
- To understand the neurogenic mechanisms underlying bladder pathology.
Main Methods:
- Sprague-Dawley rats were injected with PRV in the tail muscle.
- Spinal cord and bladder tissues were collected and analyzed using light microscopy and immunohistochemistry for PRV and iNOS.
- Cystomanometry was performed to assess bladder function.
Main Results:
- Hemorrhagic cystitis, characterized by significant blood in the urine and bladder acontractility, paralleled spinal cord inflammation.
- PRV was not detected in the affected bladders, indicating inflammation was not due to direct viral infection.
- Histological analysis confirmed the bladder changes represented true inflammation.
Conclusions:
- Spinal cord inflammation, even without direct viral involvement in the bladder, can cause severe neurogenic bladder dysfunction.
- The findings support a hypothesis linking spinal cord stress to bladder pathology via an unknown metabolic pathway.