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Estrogen receptor determination in endometrial carcinoma: ligand binding assay versus enzyme immunoassay.

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Vis graf over relationer
We compared concentrations of cytosolic estrogen receptors (ERc) measured in 35 postmenopausal endometrial carcinomas by ligand binding method (LBA) (dextran-coated charcoal assay) and enzyme immunoassay (EIA). Correlations between ERc, nuclear estrogen receptors (ERn) determined by EIA, and cytosolic progesterone receptors (PR) measured by LBA were also studied. While ERc concentrations determined by LBA and EIA were highly correlated (r: 0.94), ERc values detected by LBA were approximately twice those found by EIA (median values of ERc: 155 vs. 64 fmol/mg cytosol protein, DCC vs. EIA). The percentages of ERc positive tumors were 89% by LBA and 77% by EIA. The median fraction of total ER present as ERn was 63%. PR levels correlated positively with ERn concentrations (r: 0.73). We explore possible reasons why greater concentrations of ERc are determined by estradiol binding than by the ER-EIA kit in endometrial cancer.
Bidragets oversatte titelEstrogen receptor determination in endometrial carcinoma: ligand binding assay versus enzyme immunoassay.
OriginalsprogEngelsk
TidsskriftAnticancer Research
Vol/bind15
Udgave nummer2
Sider (fra-til)649-654
Antal sider6
ISSN0250-7005
StatusUdgivet - 1995

ID: 32525375