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Related Experiment Videos

Ovarian tumor antigens

M Bhattacharya, J J Barlow

    Cancer
    |September 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

    Researchers identified two ovarian cystadenocarcinoma-associated antigens (OCAA) distinct from other tumor markers. One OCAA shows promise for detecting specific ovarian cancers, correlating with disease progression.

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    Area of Science:

    • Oncology
    • Immunology
    • Biochemistry

    Background:

    • Human cystadenocarcinomas of the ovary express tumor-associated antigens not found in normal reproductive tissues.
    • These antigens are immunologically distinct from known markers like CEA, AFP, ferritins, and histocompatibility antigens.

    Purpose of the Study:

    • To identify and characterize novel tumor-associated antigens in ovarian cystadenocarcinomas.
    • To evaluate the potential of these antigens as diagnostic markers for gynecologic malignancies, particularly ovarian cancer.

    Main Methods:

    • Immunological assays to detect and differentiate tumor-associated antigens.
    • Purification and partial characterization of a key ovarian cystadenocarcinoma-associated antigen (OCAA).
    • Radioimmunoassay inhibition technique for quantifying OCAA levels in patient sera.

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    Main Results:

    • Two distinct ovarian cystadenocarcinoma-associated antigens (OCAA) were identified.
    • One OCAA is specific to serous or mucinous ovarian carcinomas, while the second is found in ~90% of gynecologic tumors.
    • Purified OCAA is a high molecular weight glycoprotein with tumor-specific and normal cross-reacting determinants.
    • Elevated OCAA serum levels in advanced ovarian cancer patients correlated with tumor volume and clinical status.

    Conclusions:

    • OCAA represents a promising tumor-specific marker for certain ovarian cancers.
    • Serial determination of circulating OCAA may aid in monitoring disease progression and patient status in ovarian cancer.