title: Androgen receptor binding activity in meningiomas.
abstract: Analyses of androgen receptor binding activity in 54 intracranial, intraspinal, and metastatic meningiomas were performed with a specific radioligand binding technique using [3H]R 1881 as radioligand. [3H]R 5020 was used for the concurrent determination of progesterone receptor binding activity. Moderate concentrations of androgen receptors (33.4 +/- 5.4 fmol/mg protein) were detected in 35 (65%), whereas high levels of progesterone binding components (236 +/- 35 fmol/mg protein) were demonstrated in 48 (89%) tumors. The androgen receptor binding activity was positively correlated with the progesterone receptor binding activity (rs = 0.38, p less than 0.05). This relationship is suggestive of an androgen regulation of the progesterone receptor via the androgen receptor system. The presence of androgen and progesterone receptors in a large proportion of meningiomas, and the tendency for a dependence of androgen receptor and progesterone receptor binding activity on the histological subtype could have implications for tumor therapy.
mesh_terms: D004963:Estrenes / Q000378:metabolism; D005260:Female; D006801:Humans; D008297:Male; D008577:Meningeal Neoplasms / Q000378:metabolism*; D008579:Meningioma / Q000378:metabolism*; D015741:Metribolone; D008875:Middle Aged; D011397:Promegestone / Q000378:metabolism; D011869:Radioligand Assay; D011944:Receptors, Androgen / Q000378:metabolism*; D011980:Receptors, Progesterone / Q000378:metabolism*; D045165:Testosterone Congeners / Q000378:metabolism
chemical_list: D004963:Estrenes; D011944:Receptors, Androgen; D011980:Receptors, Progesterone; D045165:Testosterone Congeners; D015741:Metribolone; D011397:Promegestone