{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,10]],"date-time":"2026-07-10T01:07:04Z","timestamp":1783645624980,"version":"3.55.0"},"reference-count":24,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2006,7,17]],"date-time":"2006-07-17T00:00:00Z","timestamp":1153094400000},"content-version":"vor","delay-in-days":5280,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Intl Journal of Cancer"],"published-print":{"date-parts":[[1992,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The expression of 17\u03b2\u2010hydroxysteroid dehydrogenase (17\u2010 HSD) enzyme protein was studied in benign and malignant human breast tissue using the time\u2010resolved immunofluorometric assay (IFMA), immunoblotting and immunohistochemistry. The presence and distribution of estrogen and progestin receptors was also analyzed immunohistochemically. Cytosolic 17\u2010HSD concentrations in malignant breast specimens were highly variable (\u2a7d 0.2\u2013311 ng\/mg protein). As was previously found for the placental enzyme, the molecular weight of the 17\u2010HSD expressed in malignant breast tissue was 35 kDa, estimated following polyacrylamide gel electrophoresis and immunoblotting. The cellular distribution of 17\u2010HSD was further studied by immunohistochemistry. Immunostaining for 17\u2010HSD was observed in 71% of the benign breast lesions (fibroadenomas and cases of mastopathia chronica) and in 47% of the cancer specimens (intra\u2010ductal carcinomas, invasive ductal carcinomas). In benign lesions, the staining was exclusively localized in the cytoplasm of epithelial cells, with no immunoreactivity in the stromal cells. The staining in the cancer specimens was also detected only in the cytoplasm of malignant epithelial cells. A strong or moderate expression of 17\u2010HSD was related to the presence of PR in the specimen (x<jats:sup>2<\/jats:sup> \u2010 4.657, <jats:italic>p<\/jats:italic> = 0.031). However, the expression of PR was not a prerequisite for expression of 17\u2010HSD in all the cancer specimens. Our data suggest that, in addition to the reported regulation of 17\u2010HSD by progestins, other factors are also involved in this process in breast tissue.<\/jats:p>","DOI":"10.1002\/ijc.2910500310","type":"journal-article","created":{"date-parts":[[2007,2,19]],"date-time":"2007-02-19T22:43:17Z","timestamp":1171924997000},"page":"386-390","source":"Crossref","is-referenced-by-count":95,"title":["Immunological analysis of 17\u03b2\u2010hydroxysteroid dehydrogenase in benign and malignant human breast tissue"],"prefix":"10.1002","volume":"50","author":[{"given":"M.","family":"Poutanen","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"V.","family":"Isomaa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"V.\u2010P.","family":"Lehto","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R.","family":"Vihko","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2006,7,17]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/ijc.2910360611"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2265.1983.tb00051.x"},{"key":"e_1_2_1_4_1","first-page":"2895","article-title":"Estradiol 17\u03b2\u2010hydroxysteroid dehydrogenase, a marker of breast cancer hormone dependency","volume":"45","author":"Fournier S.","year":"1985","journal-title":"Cancer Res."},{"key":"e_1_2_1_5_1","doi-asserted-by":"publisher","DOI":"10.1210\/jcem-55-3-428"},{"key":"e_1_2_1_6_1","doi-asserted-by":"publisher","DOI":"10.1210\/jcem-63-5-1174"},{"key":"e_1_2_1_7_1","doi-asserted-by":"publisher","DOI":"10.1038\/227680a0"},{"key":"e_1_2_1_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/0039-128X(88)90020-7"},{"key":"e_1_2_1_9_1","doi-asserted-by":"crossref","first-page":"1412","DOI":"10.1093\/clinchem\/37.8.1412","article-title":"Time\u2010resolved immunofluorometric assay of 17\u03b2\u2010hydroxysteroid dehydrogenase in plasma","volume":"37","author":"Maentausta O.","year":"1991","journal-title":"Clin. 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