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  • Ovarian carcinoma  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 113 (1987), S. 603-607 
    ISSN: 1432-1335
    Keywords: Human serum ribonuclease ; CA 125 ; Logistic regression analysis ; Ovarian carcinoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Ovarian carcinomas are distinguished by their polyclonality, i.e., heterogeneity and polymorphism of their tissue. There ist no marker available complying with the clinical demands in the case of ovarian carcinoma regarding statisfactory sensitivity and specificity. Therefore, we have simultaneously determined two entirely distinct tumor markers, serum ribonuclease activity (SRA) and cancer antigen 125 (CA 125), recommended in the literature with respect to ovarian carcinoma. After evaluation by logistic regression analysis, we found a specificity of 93% together with a sensitivity of 97% for the simultaneous determination of SRA and CA 125 (37 ovarian carcinomas, 11 cases without pathological findings after treatment, 11 benign tumors of the ovary, 61 controls). The patients are not exposed to increased stress by this simultaneous determination method compared to the determination of a single marker. The increased clinical validity justifies the recommendation of routine simultaneous determinations of SRA and CA 125 for diagnosis and monitoring of patients with ovarian carcinoma.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 97 (1980), S. 307-314 
    ISSN: 1432-1335
    Keywords: Human serum ribonuclease ; Ovarian carcinoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary the levels of total human serum RNAase activity (HSRA) from 24 patients with ovarian cancer have been followed up for a period of over 5 months. The determinations of HSRA were carried out according to our assay system described earlier. Two representative patterns of the HSRA are presented, one from a patient with an ascertained remission of an ovarian carcinoma. Increasing HSRA values are concomitant with tumor progression while in remission the HSRA remains at normal rates. We have reported earlier that optimum HSRA depends on physiological concentrations of NaCl in the reaction mixture. However, NaCl can be replaced by KCl without a loss of activity. No correlation was detectable between increased HSRA and an excessive electrolyte content in serum. The mixtures of sera with various RNAase activities showed linear additivity. These findings suggest that an increased concentration of the RNAases normally present in human serum and/or additional RNAases are responsible for the increase of the HSRA.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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