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Decrease in bladder overactivity with REN1820 in rats with cyclophosphamide induced cystitis.

Vivian Y Hu1, Peter Zvara, Abbey Dattilio

  • 1Departments of Neurology, University of Vermont College of Medicine, Burlington, Vermont 05405, USA.

The Journal of Urology
|February 16, 2005
PubMed
Summary
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Nerve growth factor (NGF) reduction using REN1820 alleviates bladder overactivity in rats with cyclophosphamide (CYP)-induced cystitis. This treatment decreased nonvoiding contractions and voiding frequency, improving rat mobility and well-being.

Area of Science:

  • Urology
  • Pharmacology
  • Neuroscience

Background:

  • Nerve growth factor (NGF) is implicated in bladder overactivity associated with inflammation.
  • Cyclophosphamide (CYP) is a common agent used to induce experimental cystitis and bladder dysfunction.

Purpose of the Study:

  • To investigate the role of NGF in cyclophosphamide (CYP)-induced bladder overactivity.
  • To evaluate the efficacy of REN1820, a recombinant NGF sequestering protein, in mitigating CYP-induced bladder dysfunction.

Main Methods:

  • Female rats were administered CYP to induce cystitis, followed by treatment with REN1820 or vehicle.
  • Urodynamic testing and behavioral observations were conducted at 4 and 48 hours post-treatment.

Main Results:

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  • REN1820 treatment significantly reduced the number and amplitude of nonvoiding contractions (p ≤ 0.01).
  • A decrease in voiding frequency was observed 48 hours after CYP and REN1820 treatment (p ≤ 0.01).
  • REN1820 did not alter bladder filling, threshold, or micturition pressure but improved rat mobility and posture.

Conclusions:

  • REN1820 effectively reduces bladder overactivity in a rat model of CYP-induced cystitis.
  • The findings suggest REN1820's potential as a therapeutic agent for chronic inflammatory bladder conditions like interstitial cystitis.
  • Improved mobility and posture in REN1820-treated rats may indicate enhanced overall well-being.