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Related Experiment Videos

Vitamin A status and bladder cancer.

H A Tyler, R G Notley, F A Schweitzer

    European Journal of Surgical Oncology : the Journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology
    |March 1, 1986
    PubMed
    Summary

    This study found no link between diet and bladder cancer risk. However, lower serum levels of retinol, carotenoids, and retinol-binding protein (RBP) were observed in patients with invasive or poorly differentiated bladder tumors.

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    Area of Science:

    • Urology
    • Nutritional Biochemistry
    • Oncology

    Background:

    • Bladder cancer is a significant health concern.
    • Nutritional factors, including vitamins and antioxidants, are being investigated for their role in cancer prevention and progression.
    • Serum levels of certain micronutrients may serve as biomarkers for cancer status.

    Purpose of the Study:

    • To investigate the association between serum concentrations of retinol, retinol-binding protein (RBP), carotenoids, pre-albumin, zinc, and copper, and bladder cancer.
    • To explore potential correlations between these serum markers and the invasiveness or differentiation grade of bladder tumors.
    • To assess whether dietary intake of retinol and carotenoids influences bladder cancer risk.

    Main Methods:

    • Serum levels of retinol, RBP, carotenoids, pre-albumin, zinc, and copper were measured in 111 patients.

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  • Patients were categorized into groups: transitional cell carcinoma of the bladder, no recurrence of bladder cancer, non-malignant urological diseases, and a miscellaneous group.
  • Dietary intake of retinol and carotenoids was estimated using questionnaires.

    • Main Results:

    • No significant differences in serum concentrations of measured constituents were found between patient groups.
    • Serum concentrations of retinol, carotenoids, and RBP were significantly lower in patients with invasive bladder cancer compared to those with non-invasive disease.
    • Lower serum levels of retinol, RBP, and carotenoids were also observed in patients with poorly differentiated tumors.

    Conclusions:

    • The study does not support the hypothesis that high dietary intake of retinol or carotenoid-rich foods decreases bladder cancer risk.
    • Low serum levels of retinol and associated components were not detected in patients with early-stage transitional cell carcinoma.
    • The observed low serum levels of retinol, RBP, and carotenoids in a small group of patients with poorly differentiated invasive bladder tumors warrant further investigation.