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Related Experiment Videos

Immunological detection of human bladder carcinoma

A P Monaco, J J Gozzo, R M Schlesinger

    Annals of Surgery
    |September 1, 1975
    PubMed
    Summary

    A rabbit antiserum (RABCa) shows potential for detecting bladder cancer and urinary infections through immunological assays. While not entirely specific, it aids in early disease detection, particularly for high-grade tumors.

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    Area of Science:

    • Immunology
    • Oncology
    • Urology

    Background:

    • Bladder cancer diagnosis often relies on invasive procedures.
    • Development of non-invasive serological markers is crucial for early detection.
    • Existing diagnostic methods may lack sensitivity or specificity.

    Purpose of the Study:

    • To produce and characterize a rabbit antiserum (RABCa) against human bladder carcinoma membrane antigens.
    • To evaluate the utility of RABCa in immunological assays for detecting bladder cancer and other urinary conditions.
    • To assess the specificity and sensitivity of RABCa in micro-complement fixation (CF) and micro-Ouchterlony assays.

    Main Methods:

    • Production of rabbit antiserum (RABCa) to human bladder carcinoma membrane extracts.
    • Application of micro-complement fixation (CF) assay on patient urine samples.

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  • Utilization of micro-Ouchterlony agar gel diffusion assay on patient urine samples.
  • Absorption of RABCa with normal bladder mucosa extracts to enhance specificity.

    • Main Results:

    • RABCa showed higher complement fixation activity in bladder cancer patients (62.9%) compared to normals (3.4%), but also positive results in urinary infections (90.9%) and benign urological diseases.
    • Micro-Ouchterlony assay detected bladder cancer urines (66.7%) with low false positives in normals (4.2%), but also positive results in infections and benign diseases.
    • Absorption of RABCa (3X) significantly reduced reactivity with benign and infected urines while maintaining detection of bladder carcinoma (51.9%), with 100% detection of high-grade tumors.
    • Detected antigen has a molecular weight >100,000-200,000 M.W. and may be an inflammatory product.

    Conclusions:

    • RABCa shows promise for immunological screening in early disease detection, particularly for bladder cancer and urinary infections.
    • Further refinement of the antiserum and assay conditions is needed to improve specificity for bladder cancer.
    • The detected antigen may represent a common marker for inflammation associated with various urinary tract conditions, including cancer.