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Tamm-Horsfall protein as a marker in interstitial cystitis
A R Stone1, P Vogelsang, C H Miller
1Department of Urology, University of California Davis, Sacramento.
The Journal of Urology
|November 1, 1992
Summary
Immunohistochemical staining for Tamm-Horsfall protein is not a reliable marker for interstitial cystitis (IC). This study found inconsistent and low-level positive staining in IC patients, failing to confirm it as a diagnostic indicator for bladder disease.
Area of Science:
- Urology
- Pathology
- Immunohistochemistry
Background:
- Interstitial cystitis (IC) is a chronic bladder condition with unclear etiology.
- Tamm-Horsfall protein (THP) has been proposed as a potential biomarker for IC.
- Investigating THP in bladder epithelium could offer diagnostic insights.
Purpose of the Study:
- To evaluate the utility of immunohistochemical staining for Tamm-Horsfall protein as a marker for interstitial cystitis.
- To determine if THP is present in the bladder epithelium of IC patients.
- To assess THP presence in ureteral and enterocystoplasty specimens.
Main Methods:
- Immunohistochemical staining was performed on bladder biopsies from 14 IC patients and 11 controls.
- Ureteral specimens from 4 IC patients and 4 controls were analyzed.
- Enterocystoplasty specimens were also examined for THP presence.
Main Results:
- Only 3 of 14 IC bladder biopsies showed positive THP staining within the mucosa.
- 2 of 11 control bladder biopsies exhibited positive THP staining.
- All ureteral and enterocystoplasty specimens tested negative for THP.
Conclusions:
- Immunohistochemical staining for Tamm-Horsfall protein does not confirm its presence in bladder epithelium of IC patients.
- THP staining is not a reliable diagnostic marker for interstitial cystitis.
- Further research is needed to understand bladder permeability and IC etiology.