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- W4234717143 abstract "The objective of the present study was to determine the MDR1 gene expression in endometrial cancer. Twenty-six newly diagnosed patients with endometrial carcinoma were included in this study. Patients were treated with surgery followed by adjuvant radiotherapy. Four- to six-micrometer sections of the archival paraffin-embedded blocks were cut, deparaffinized, and stained by immunohistochemical technique using P-glycoprotein dye. Endothelial cell staining was used as the positive control of the dye. Immunostaining was categorized from 0% to 100% based on the percentage of cells stained by examining 3–4 high-power fields. The mean P-glycoprotein immunoreactivity for the whole study group was 17 ± 25% (0–90). The mean P-glycoprotein immunoreactivity was 21 ± 26% (0–90) for the endometrioid histology and 6 ± 13% (0–30) for the clear cell histology. P-glycoprotein immunoreactivity was not detected in a case of mucinous histologic subtype. There was a significant negative correlation between age and P-glycoprotein immunoreactivity ( r = −0.530, P = 0.005). The P-glycoprotein immunoreactivity was found to be 30% positive in only one case of clear cell histologic type out of five. However, P-glycoprotein immunoreactivity was not significantly lower in clear cell histologic subtype compared with endometrioid subtype of endometrial cancer ( P = 0.116). P-glycoprotein immunoreactivity was found to be 0% in grade 1 ( n = 2), 22 ± 28% in grade 2 ( n = 17), and 8 ± 14% in grade 3 ( n = 7) patients ( P = 0.273). Premenopausal patients were found to have a significantly higher P-glycoprotein expression (40 ± 33)% vs. 11 ± 20%, P = 0.04). P-glycoprotein immunoreactivity was found to be less with advanced age in endometrial carcinoma. However, premenopausal patients were found to have a significantly higher P-glycoprotein expression." @default.
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- W4234717143 date "2003-01-01" @default.
- W4234717143 modified "2023-09-30" @default.
- W4234717143 title "MDR1 gene expression in endometrial carcinoma" @default.
- W4234717143 doi "https://doi.org/10.1136/ijgc-00009577-200309000-00016" @default.
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