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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of gynecology and obstetrics 244 (1989), S. 113-122 
    ISSN: 1432-0711
    Keywords: CA 125 ; Immunoradiometric assay ; Cervix uteri ; Endometrium ; Fallopian tube
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The study deals with the occurrence of cancer antigen 125 (CA 125) in the normal and neoplastic uterine cervix, endometrium and fallopian tube and its applicability as a tumour marker. CA 125 concentrations were measured in 52 secretion specimens, in cytosol fractions of 97 tissue biopsies and in serum from 47 women with nonmalignant disorders and from 334 patients with carcinomas. High quantities of CA 125 (780-454860 U/ml) were detected in cervical mucus, intra-uterine and tubal fluid, exceeding those in the corresponding serum samples by factors of up to 2000. CA 125 concentrations were 9–53 fold higher in cytosol fractions of normal and neoplastic glandular epithelia of the endocervix and endometrium than in those of cervical squamous epithelia and the cervical wall. Despite similarly high antigen concentrations in normal glandular epithelia and adenocarcinomas serum levels elevated to above 65 U/ml were only found in patients with malignant tumours. The positivity rates in serum increased with tumour extent and were 0–43% for primary and 63–79% for recurrent cervical, endometrial and tubal adenocarcinomas. During long-term follow-up, CA 125 serum concentrations were concordant with the clinical course in 10 out of 11 patients with progressive carcinomas. According to these results, the release of CA 125 into the peripheral blood is apparently dependent on the infiltrative growth and the mass of the tumour rather than on, the local tissue concentrations. The clinical use of CA 125 is limited to the detection of advanced adenocarcinomas of the Müllerian duct.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1963
    Keywords: Schlüsselwörter Mammakarzinom ; pS 2 ; Immunhistochemie ; Paraffinschnitt ; Immunradiometrischer Assay ; Steroidrezeptorstatus ; Key words Breast cancer ; pS 2 ; Immunhistochemistry ; Paraffin-embedded tissues ; Immunoradiometric assay ; Steroid receptor status
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The synthesis of pS 2 protein is induced through estrogen-dependent transcription of the pS 2 gene. The presence of the pS 2 protein in breast cancer is thought to be as valuable as receptor status, or even more so, in predicting the response to hormonal therapy. Furthermore, pS 2 appears to be a prognostic factor for primary breast cancer. In 162 cases of primary breast cancer, pS 2 was tested by immunohistochemical procedures on formalin-fixed and paraffin-embedded tissues. Staining was evaluated semiquantitatively using an immunoreactive score (IRS). The concentrations of pS 2 in tumor cytosol were determined using an immunoradiometric assay. Positive staining for pS 2 (IRS ≥ 2) was seen in 27 % of the tumors. Comparison of immunohistochemical and biochemical detection (26 % of tumors had pS 2 cytosol concentrations above the cut-off value of 26 ng/mg cell protein) revealed an 81 % concordance rate (r = 0.76; P 〈 0.0001). Univariate analysis showed no significant correlation of immunohistochemical pS 2 detection and age or menopausal status of patients, tumor size, tumor grade or nodal status. However, the immunohistochemical pS 2 status correlated significantly with the immunohistochemical detection of the estrogen (ER; P 〈 0.001) and progesterone receptor status (PR; P 〈 0.0001). pS 2-positive tumors were ER-positive in 66 % of cases and PR-positive in 73 %; 89 % of pS 2-positive tumors were positive for ER and/or PR. The incidence of immunohistochemical pS 2 detection was 41 % in the group of steroid receptor positive carcinomas (ER- and/or PR-positive) in contrast to 7 % in steroid receptor negative tumors (ER- and PR-negative).
    Notes: Zusammenfassung Die Synthese des pS 2-Proteins wird durch die östrogenabhängige Transkription des pS 2-Gens induziert. Dem Nachweis des pS 2-Proteins in Mammakarzinomen soll eine im Vergleich zum Rezeptorstatus gleichwertige oder höhere Voraussagekraft hinsichtlich des Ansprechens auf eine hormonelle Therapie zukommen. Ebenso wird dem pS 2-Proteinnachweis eine prognostische Bedeutung zugesprochen. In 162 primären Mammakarzinomen wurde der pS 2-Nachweis an formalinfixierten und in Paraffin eingebetteten Gewebeschnitten durchgeführt und mittels eines immunreaktiven Score (IRS) semiquantitativ immunhistochemisch beurteilt. Die Konzentrationen des pS 2-Proteins im Zytosol wurde immunradiometrisch bestimmt. 27 % der Tumoren waren immunhistochemisch pS 2-positiv (IRS ≥ 2). Der Vergleich mit der biochemischen pS 2-Nachweismethode (26 % positive Tumoren bei einem Cut-off von 26 ng/mg Zytosolprotein) erbrachte in 81 % eine konkordante qualitative Aussage des pS 2-Status (r = 0,76, p 〈 0,0001). Der immunhistochemische Nachweis von pS 2 im Karzinomgewebe korrelierte weder zum Alter oder Menopausenstatus der Patientinnen, noch zu Größe oder Differenzierungsgrad der Tumoren oder zum Nodalstatus. Der immunhistochemische pS 2-Status korrelierte aber signifikant mit dem immunhistochemischen Nachweis der Östrogen- (ER, p 〈 0,001) und Progesteronrezeptoren (PR; p 〈 0,0001). pS 2-positive Tumoren wiesen in 66 % einen positiven ER- und in 73 % einen positiven PR-Status auf bzw. waren in 89 % ER+ und/oder PR+. Die Inzidenz des immunhistochemischen pS 2-Nachweises lag in der Gruppe steroidrezeptorpositiver Karzinome (ER und/oder PR positiv) bei 41 % im Gegensatz zu 7 % bei steroidrezeptornegativen Tumoren (ER und PR negativ).
    Type of Medium: Electronic Resource
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