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Enzyme histochemical study on bone tumors.

H Yoshida, M Akeho, T Orido

    Acta Medica Okayama
    |December 1, 1982
    PubMed
    Summary
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    Enzyme histochemistry aids in diagnosing bone tumors. Alkaline phosphatase (ALPase) activity is characteristic of osteosarcoma, distinguishing it from other bone tumors like giant cell tumors.

    Area of Science:

    • Oncology
    • Histopathology
    • Biochemistry

    Background:

    • Bone tumors encompass a range of benign and malignant neoplasms.
    • Accurate diagnosis is crucial for effective treatment and patient outcomes.
    • Enzyme histochemistry offers a method for characterizing cellular components of tumors.

    Purpose of the Study:

    • To investigate the diagnostic utility of enzyme histochemistry in differentiating various bone tumors.
    • To characterize the enzyme activity profiles of osteosarcoma, giant cell tumors, nonossifying fibromas, and cartilaginous tumors.

    Main Methods:

    • Enzyme histochemical analysis was performed on 19 bone tumor cases.
    • Specific enzymes examined included alkaline phosphatase (ALPase), acid phosphatase (ACPase), nonspecific esterase (NSE), adenosine triphosphatase (ATPase), 5'-nucleotidase (5'-Nucl), and beta-glucuronidase (beta-Gl).

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  • Tumor types included osteosarcoma, giant cell tumor, malignant fibrous histiocytoma, nonossifying fibroma, chondroma, and chondrosarcoma.

    • Main Results:

    • Osteosarcoma demonstrated strong alkaline phosphatase (ALPase) positivity.
    • Giant cell tumors, malignant fibrous histiocytomas, and nonossifying fibromas exhibited similar enzyme profiles, with multinucleated cells resembling osteoclasts.
    • Chondromas and chondrosarcomas showed focal positivity for acid phosphatase (ACPase) and nonspecific esterase (NSE), with ACPase sensitive to tartaric acid.

    Conclusions:

    • Alkaline phosphatase (ALPase) activity is a highly characteristic marker for osteosarcoma diagnosis.
    • Enzyme histochemistry suggests that giant cell tumors, malignant fibrous histiocytomas, and nonossifying fibromas are of histiocyte origin.
    • This study highlights the value of enzyme histochemistry in the differential diagnosis of bone tumors.