[Significance of urinary nuclear matrix protein 22 in diagnosis of transitional cell carcinoma of urinary tract].
OBJECTIVE
There is no effective non-invasive monitoring method for transitional cell carcinoma of urinary tract(TCCU). It was recently reported that nuclear matrix protein 22(NMP22) could be used to diagnose TCCU. This study was designed to evaluate the significance of NMP22 in TCCU as a new urinary tumor marker and its influence factors.


METHODS
The authors detected 87 patients with urinary system disease(including 29 cases with TCCU) with ELISA-NMP agent box. The patients with urinary infection were excluded.


RESULTS
The positive value was set at more than 10 u/ml. The sensitivity and specificity of NMP22 on TCCU were 86.2% and 94.3%, respectively (benign diseases of urinary system used as control), with significant advantages over voided-urine cytology (86.2% vs 42.3%, P < 0.001). The main factors that caused false-positive results were urinary infection, the other malignant tumors of urinary system, bowel interposition, and nephrolith.


CONCLUSIONS
Urinary NMP22 is a good tumor marker and could be used an alternation of voided-urine cytology for monitoring and diagnosis of TCCU.
Shao
Yuan
Y
Department of Urology, 2 Nanyang Medical RIA Center, Ruijin Hospital, Shanghai Second Medical University, Shanghai 200025, P. R. China. shaoyuan15@hotmail.com
Zhuang
Jing
J
Xu
Shu-xiang
SX
Liu
Ding-yi
DY
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000652:urine; D002295:Carcinoma, Transitional Cell / Q000175:diagnosis* / Q000652:urine; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009687:Nuclear Proteins / Q000652:urine*; D014571:Urologic Neoplasms / Q000175:diagnosis* / Q000652:urine
D014408:Biomarkers, Tumor; D009687:Nuclear Proteins; C100379:nuclear matrix protein 22