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Time dependent changes in diabetic cystopathy in rats include compensated and decompensated bladder function.

Firouz Daneshgari1, Guiming Liu, Peter B Imrey

  • 1Glickman Urological Institute, Lerner Research Institute, Cleveland Clinic Foundation, 9500 Euclid Avenue, Cleveland, OH 44195, USA. daneshf@ccf.org

The Journal of Urology
|June 7, 2006
PubMed
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Diabetic bladder dysfunction shows initial increases in pressure and capacity. However, after 9-12 weeks, diabetic bladders decompensate, with pressure decreasing and voiding issues arising.

Area of Science:

  • Urology
  • Endocrinology
  • Diabetology

Background:

  • Diabetic bladder dysfunction is a common complication of diabetes mellitus.
  • Functional changes in diabetic bladders are not fully understood.
  • This study investigates time-dependent bladder function alterations in a diabetic rat model.

Purpose of the Study:

  • To investigate time-dependent changes in bladder function in streptozotocin-induced diabetic rats.
  • To elucidate the progression of diabetic bladder dysfunction.
  • To identify potential transition points from compensated to decompensated bladder states.

Main Methods:

  • Male Sprague-Dawley rats were induced with diabetes using streptozotocin.
  • Cystometrograms and detrusor muscle contractility were assessed at 3, 6, 9, 12, and 20 weeks post-induction.

Related Experiment Videos

  • Comparisons were made between diabetic and age-matched control rats.

    • Main Results:

    • Diabetic rats exhibited increased bladder weight, capacity, and compliance.
    • Peak detrusor leak pressure initially increased but decreased significantly at 12 and 20 weeks compared to controls.
    • Detrusor muscle contractility peaked at 6-9 weeks and then reverted towards control levels by 12-20 weeks.

    Conclusions:

    • Diabetic bladders may transition from a compensated to a decompensated state.
    • This transition in the streptozotocin rat model appears to initiate between 9 and 12 weeks after diabetes induction.
    • Understanding this transition is crucial for managing diabetic bladder dysfunction.