{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,8]],"date-time":"2026-07-08T05:24:32Z","timestamp":1783488272313,"version":"3.55.0"},"reference-count":32,"publisher":"Oxford University Press (OUP)","issue":"1","content-domain":{"domain":["eje.bioscientifica.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2010,7]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>Silent corticotroph adenomas (SCAs) are rare pituitary tumours immunoreactive for ACTH, but without clinical evidence of Cushing's disease. We characterized SCAs based on clinical, hormonal and molecular data, and compared the characteristics of these tumours with those of macro (MCA)- and micro (mCA)-ACTH adenomas with Cushing's disease.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Fifty ACTH adenomas (14 SCAs, 15 MCAs and 21 mCAs) with complete corresponding clinical, radiological and biochemical data were selected. Histological corticotroph differentiation; immunostaining for ACTH, \u03b2-endorphin and \u03b2-LPH; and mRNA expression levels of <jats:italic>TPIT<\/jats:italic>, <jats:italic>POMC<\/jats:italic>, <jats:italic>GR<\/jats:italic><jats:italic>\u03b1<\/jats:italic>, prohormone convertase 1\/3 (<jats:italic>PC1\/3<\/jats:italic>) and <jats:italic>galectin-3<\/jats:italic> were compared in 21 representative tumours.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Despite the absence of clinical hypercortisolism in patients with SCA, elevated plasma ACTH levels that were similar to those associated with mCA were observed. The cortisol\/ACTH ratio was similar between SCA and MCA groups and lower than that found with mCA (<jats:italic>P<\/jats:italic>&lt;0.05). This dissociation could be explained by lower expression of <jats:italic>PC1\/3<\/jats:italic> in SCA and MCA than in mCA (<jats:italic>P<\/jats:italic>&lt;0.05). After an i.v. dexamethasone suppression test, ACTH levels were significantly higher in patients with MCA than in those with mCA (<jats:italic>P<\/jats:italic>&lt;0.05). Cytological and immunocytochemical analyses as well as mRNA expression levels of <jats:italic>TPIT<\/jats:italic>, <jats:italic>POMC<\/jats:italic> and <jats:italic>GR<\/jats:italic><jats:italic>\u03b1<\/jats:italic> confirmed corticotroph differentiation in both mCAs and MCAs and in half of the SCAs, with a strong correlation between <jats:italic>TPIT<\/jats:italic> and <jats:italic>POMC<\/jats:italic> mRNA expression levels in SCAs (<jats:italic>R<\/jats:italic><jats:sup>2<\/jats:sup>=0.72; <jats:italic>P<\/jats:italic>&lt;0.01) and in MCAs (<jats:italic>R<\/jats:italic><jats:sup>2<\/jats:sup>=0.65; <jats:italic>P<\/jats:italic>&lt;0.05).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Despite the absence of hypercortisolism, SCAs exhibit histological, biochemical and molecular corticotroph differentiation. SCA and MCA show hormonal and molecular similarities differentiating them from mCA.<\/jats:p><\/jats:sec>","DOI":"10.1530\/eje-10-0076","type":"journal-article","created":{"date-parts":[[2010,4,13]],"date-time":"2010-04-13T02:13:30Z","timestamp":1271124810000},"page":"35-43","update-policy":"https:\/\/doi.org\/10.1530\/crossmarkpolicy-1","source":"Crossref","is-referenced-by-count":90,"title":["Clinical, hormonal and molecular characterization of pituitary ACTH adenomas without (silent corticotroph adenomas) and with Cushing's disease"],"prefix":"10.1093","volume":"163","author":[{"given":"G\u00e9rald","family":"Raverot","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anne","family":"Wierinckx","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emmanuel","family":"Jouanneau","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carole","family":"Auger","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fran\u00e7oise","family":"Borson-Chazot","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jo\u00ebl","family":"Lachuer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michel","family":"Pugeat","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jacqueline","family":"Trouillas","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","reference":[{"issue":"2-3 Pt 2","key":"2_17094575","first-page":"149","volume":"48","author":"Trouillas","year":"2002","journal-title":"Neuro-Chirurgie","ISSN":"https:\/\/id.crossref.org\/issn\/0028-3770","issn-type":"print"},{"issue":"3","key":"3_8071071","first-page":"617","volume":"98","author":"Horvath","year":"1980","journal-title":"American Journal Of Pathology","ISSN":"https:\/\/id.crossref.org\/issn\/0002-9440","issn-type":"print"},{"issue":"6","key":"4_4919305","doi-asserted-by":"publisher","first-page":"1111","DOI":"10.1210\/jcem-66-6-1111","volume":"66","author":"HORVATH","year":"1988","journal-title":"Journal of Clinical Endocrinology &amp; 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