Pelvic venous congestion induces lower urinary tract dysfunction in rats

Area of Science:

• Urology
• Vascular Biology
• Animal Models

Background:

• Pelvic venous congestion (PC) is implicated in various lower urinary tract (LUT) diseases.
• Understanding the LUT characteristics in PC is crucial for developing effective treatments.

Purpose of the Study:

• To investigate the effects of induced pelvic venous congestion on the lower urinary tract in a rat model.
• To evaluate potential therapeutic interventions for LUT symptoms associated with PC.

Main Methods:

• Pelvic venous congestion was induced in female rats via ligation of common iliac and uterine veins.
• Assessments included cystometry, histological examination, blood flow imaging, and biochemical analyses (8-OHdG, NOx).
• Pharmacological interventions with carbazochrome sodium sulfonate hydrate and propiverine hydrochloride were evaluated.

Main Results:

• Induced PC led to increased urination frequency, decreased bladder blood flow, and elevated vascular permeability.
• Bladder tissue showed mild inflammatory changes, increased urinary 8-hydroxydeoxyguanosine (8-OHdG), and decreased nitric oxide metabolites (NOx).
• Propiverine and carbazochrome administration normalized urinary frequency in PC rats.

Conclusions:

• The rat model of PC effectively replicates LUT symptoms, including urinary frequency and bladder dysfunction.
• This model is valuable for researching treatments for lower urinary tract symptoms associated with pelvic venous congestion.
• Pharmacological agents like propiverine and carbazochrome show promise in managing PC-induced urinary issues.