STEROID-HORMONE RECEPTORS IN ASTROCYTIC NEOPLASMS

THE PRESENCE OF specific steroid hormone-binding receptors has been co rrelated with the clinical response to hormonal therapy in a number of different neoplasias, including breast and prostate cancer. In this a rticle, we investigated the expression of the androgen, estrogen, gluc ocorticoid, and progesterone receptor messenger ribonucleic acid (mRNA ) and protein in a number of astrocytic neoplasms of various histologi cal grades. Androgen and glucocorticoid receptor mRNA were detected in all astrocytic neoplasms examined, regardless of histological subtype . In contrast, progesterone receptor mRNA was observed more frequently in high-grade tumors than in low-grade tumors. Estrogen receptor mRNA was undetectable in all astrocytic tumors examined. These studies sug gest a possible adjunct clinical use of hormonal therapy for the treat ment of astrocytomas. Specific antagonists and agonists may allow the modulation of the growth of these tumors. Development of this body of knowledge may lead to the development of better treatment for these ag gressive tumors.