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Crystal adherence to rat bladder epithelium after long-term E. coli infection
S Holmäng1, L Grenabo, H Hedelin
1Department of Urology, Sahlgrenska sjukhuset, University of Göteborg, Sweden.
Scandinavian Journal of Urology and Nephrology
|January 1, 1993
Summary
Long-term urinary tract infections in rats significantly increase crystal adhesion to the bladder lining. This suggests chronic bacterial infections may damage the urothelium's protective mucous coat, impairing its barrier function.
Area of Science:
- Urology
- Microbiology
- Biomedical Science
Background:
- The urothelium, lining the urinary bladder, is protected by a mucous coat that prevents adhesion of bacteria and crystals.
- Acute bacterial infections disrupt this mucous coat, but the effects of long-term infections remain unclear.
Purpose of the Study:
- To investigate the impact of persistent bacterial infection on crystal adhesion to the rat urinary bladder.
Main Methods:
- Live Escherichia coli (E. coli) were introduced into rat urinary bladders, with infection sustained by creating a bladder diverticulum.
- Crystal adhesion was quantified using an adhesion assay at 2, 10, and 21 days post-infection.
Main Results:
- Infected rats exhibited a twofold increase in crystal adhesion to the urinary bladder compared to control rats (p < 0.001).
- This increased adherence was observed consistently across the 2, 10, and 21-day time points.
Conclusions:
- Persistent bacterial infections in the urinary bladder lead to significantly enhanced crystal adhesion.
- The findings suggest that chronic infections may compromise the integrity of the urothelial mucous coat, potentially contributing to stone formation or other complications.