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Appraisal of diagnostic ability of UCA1 as a biomarker of carcinoma of the urinary bladder

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Tumor Biology

Abstract

Initial diagnosis of carcinoma of the urinary bladder remains to be a challenge. Urine cytology, as an adjunct to cystoscopy, is less sensitive for low-grade tumors. Urothelial cancer associated 1 (UCA1) is a novel non-coding RNA gene, which plays a pivotal role in bladder cancer progression. Our aim is to investigate the significance of urinary UCA1 for the non-invasive diagnosis of transitional cell carcinoma (TCC) of the urinary bladder. We examined UCA1 expression in a bladder cancer cell line (T24) and in urine of 28 healthy individuals, 46 patients of non-malignant disorders, and 117 cases (69 primary and 48 recurrent cases) of histologically proven TCC prior to transurethral resection by using real-time PCR and compared it with voided urinary cytology. UCA1 expression was found in T24 cell line and also found to be significantly higher in the cancer group as compared to the controls (p < 0.001). UCA1 messenger RNA (mRNA) expression showed a significant (p < 0.05) association with stage and grade (p < 0.05). UCA1 showed a sensitivity of 79.49 % and a specificity of 79.73 % (p < 0.001), whereas urine cytology had a sensitivity of 66.67 % and a specificity of 95.95 % for TCC cases. Higher expression of UCA1 was associated with high grade (G2–G3, sensitivity = 84.09 %) (p < 0.001). UCA1 mRNA expression did not significantly correlate with the patient’s age, sex, and smoking habit (p > 0.05). UCA1 can be used as a non-invasive diagnostic biomarker for TCC bladder as an adjunct to cytology in the early diagnosis of primary urinary bladder cancer.

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Acknowledgments

All authors are also thankful to Dr. Seema Nayak and Dr. S. P. Mishra for their invaluable contribution. We thank all the subjects for their participation in the study. The first author (Anupam Kumar Srivastava) is thankful to the Indian Council of Medial Research, New Delhi, India, for awarding Senior Research Fellowship (SRF IRIS ID: 2010-03160) under the guidance of the corresponding author.

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Authors and Affiliations

  1. Department of Radiotherapy, King George’s Medical University, Lucknow, Uttar Pradesh, 226003, India

    A. K. Srivastava & P. K. Singh

  2. Genotoxicity Laboratory, Division of Toxicology, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, 226001, India

    S. K. Rath

  3. Department of Urology, King George’s Medical University, Lucknow, Uttar Pradesh, 226003, India

    D. Dalela

  4. Department of Pathology, King George’s Medical University, Lucknow, Uttar Pradesh, 226003, India

    M. M. Goel

  5. Department of Radiation Oncology, Dr. Ram Manohar Lohia Institute of Medical Sciences, Lucknow, Uttar Pradesh, 226003, India

    M. L. B. Bhatt

Authors
  1. A. K. Srivastava
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  2. P. K. Singh
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  3. S. K. Rath
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  4. D. Dalela
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  5. M. M. Goel
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  6. M. L. B. Bhatt
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Corresponding author

Correspondence to M. L. B. Bhatt.

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Srivastava, A.K., Singh, P.K., Rath, S.K. et al. Appraisal of diagnostic ability of UCA1 as a biomarker of carcinoma of the urinary bladder. Tumor Biol. 35, 11435–11442 (2014). https://doi.org/10.1007/s13277-014-2474-z

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  • DOI: https://doi.org/10.1007/s13277-014-2474-z

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