Objective: MicroRNAs (miRs) are short noncoding RNA molecules that posttranscriptionally modulate protein expression. There are distinct miR alterations characterizing urothelial cell carcinoma (UCC) of the urinary bladder. Study Design: In this study, we investigate the possibility of using miR as a noninvasive marker in the screening of UCC. The total RNA was extracted from 75 cytology specimens including bladder or renal washings and voided urines. Cases comprise UCC (21 high grade and 6 low grade), 25 normal controls and 23 cases with a history of UCC but negative at the time of testing (negative with a positive history). The expressions of miR-96, miR-182, miR-183, miR-200c, miR-21, miR-141 and miR-30b were determined using quantitative TaqMan real-time PCR. Results and Conclusion: This study shows that the level of miR-182 is higher in cytology specimens from high-grade UCC patients as compared to normal controls. Measuring miR-182 may provide a potential alternative or adjunct approach for screening high-grade UCC.

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