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Related Experiment Videos

Human tumour pH and its variation.

J L Wike-Hooley, A P van den Berg, J van der Zee

    European Journal of Cancer & Clinical Oncology
    |July 1, 1985
    PubMed
    Summary

    Human tumor pH varies greatly. This study found tumor acidity is higher in primary tumors than metastases, but not predictable by common factors like histology or size.

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    Area of Science:

    • Oncology
    • Biomedical Engineering

    Background:

    • Human tumor pH exhibits significant variability.
    • Understanding factors influencing tumor pH is crucial for cancer research and treatment.

    Purpose of the Study:

    • To investigate the causes of wide variations in human tumor pH.
    • To determine if tumor pH can be predicted using easily measurable parameters.

    Main Methods:

    • Performed 105 tumor pH measurements in various human tumors.
    • Utilized the Philips C 902S tissue pH electrode for measurements.
    • Analyzed correlations between tumor pH and clinical/histopathological factors.

    Main Results:

    • No correlation found between tumor pH and histology, differentiation, size, age, treatment history, or ulceration.
    • Tumor pH was significantly lower in primary tumors compared to lymph node metastases.
    • Primary site tumors (primary, recurrent, residual) showed higher acidity than distant metastases.
    • The tissue pH electrode technique caused acceptable vascular disruption.

    Conclusions:

    • Tumor pH is significantly more acidic in primary tumors than in metastases.
    • Easily measurable parameters like histology or tumor size do not predict human tumor pH.
    • Further research may explore the clinical implications of primary tumor acidity.

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