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Related Experiment Videos

Nerve fibre proliferation in interstitial cystitis.

T J Christmas1, J Rode, C R Chapple

  • 1Department of Urology, University College, Middlesex Hospital, London, UK.

Virchows Archiv. A, Pathological Anatomy and Histopathology
|January 1, 1990
PubMed
Summary

Interstitial cystitis involves increased nerve fibers in the bladder wall, unlike other cystitis types. Cystolysis treatment reduces submucosal nerves, alleviating pain without affecting bladder muscle function.

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Area of Science:

  • Urology
  • Neuroscience
  • Pathology

Background:

  • The cause of pain in interstitial cystitis (IC) is unclear, with mast cell mediator release proposed.
  • Treatments like cystolysis and dimethyl sulfoxide instillations can relieve IC pain.

Purpose of the Study:

  • To investigate the nerve population in the bladder wall of interstitial cystitis patients.
  • To determine if nerve proliferation is specific to interstitial cystitis compared to other bladder conditions.

Main Methods:

  • Immunohistochemical staining for protein gene product 9.5 was used to analyze nerve fibers.
  • Bladder tissue from 18 interstitial cystitis patients and 12 controls (including other cystitis types and healthy individuals) was examined.

Main Results:

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  • Significantly higher nerve fiber density was observed in the sub-urothelial and detrusor muscle layers of IC patients compared to controls.
  • Increased nerve density was specific to IC, as other cystitis types did not show significant nerve proliferation.
  • Cystolysis selectively reduced submucosal nerve plexuses but did not alter nerve density in the detrusor muscle.

Conclusions:

  • Nerve fiber proliferation in the bladder wall is specifically associated with interstitial cystitis.
  • Cystolysis provides pain relief by desensitizing the bladder through selective depletion of submucosal nerves, preserving detrusor function.