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Chronic urinary retention could decrease the number of suburothelial myofibroblasts in the rat bladder.

Shohei Tobu¹, Mitsuru Noguchi, Ken-ichi Mori

¹Department of Urology, Saga University Faculty of Medicine, Saga, Japan.

Urologia Internationalis

|March 20, 2014

Summary

This summary is machine-generated.

Chronic urinary retention (CUR) in rats significantly reduced suburothelial myofibroblasts. This decrease in myofibroblasts may explain the prolonged micturition intervals observed in chronic urinary retention.

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Area of Science:

Urology
Cell Biology
Physiology

Background:

Chronic urinary retention (CUR) is a condition that can lead to significant changes in bladder function.
Suburothelial myofibroblasts play a role in bladder wall mechanics and remodeling.

Purpose of the Study:

To investigate the impact of chronic urinary retention (CUR) on the number of suburothelial myofibroblasts in a rat model.
To explore the potential relationship between changes in myofibroblast count and bladder function under CUR.

Main Methods:

Female Wistar rats were subjected to chronic urinary retention (CUR) via urethral obstruction or sham surgery.
Bladder specimens were collected after 8 weeks for cystometric analysis and immunohistochemical staining.
Quantification of suburothelial myofibroblasts was performed and compared between CUR and control groups.

Main Results:

Rats with CUR exhibited significantly increased bladder weight and capacity compared to sham-operated controls.
The number of suburothelial myofibroblasts was markedly reduced in rats with CUR (44 ± 42) compared to controls (417 ± 123).
This reduction in myofibroblasts was statistically significant (p < 0.01).

Conclusions:

Prolonged mechanical stress on the bladder wall due to CUR leads to a decrease in suburothelial myofibroblast numbers.
The diminished presence of suburothelial myofibroblasts may contribute to the functional alterations observed in chronic urinary retention, such as prolonged micturition intervals.