TY - CHAP M1 - Book, Section TI - Prostate Cancer A1 - Selby, Chris A1 - Eslami, Parnian A2 - Sutton, S. Scott PY - 2020 T2 - McGraw Hill’s NAPLEX® Review Guide, 4e AB - Prostate cancer is the most common cancer in men. Most prostate cancers are adenocarcinomas, occurring when normal semen-secreting cells mutate into cancer cells and grow uncontrollably. Normal growth and differentiation of the prostate depends on the presence of androgens, specifically dihydrotestosterone (DHT). Androgen synthesis regulation is mediated by a negative feedback loop involving the hypothalamus, pituitary, adrenal glands, and testes. Luteinizing hormone–releasing hormone (LH-RH) is released from the hypothalamus; then stimulates the release of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) from the anterior pituitary gland. LH stimulates the production of testosterone and small amounts of estrogen estradiol, while FSH acts on the Sertoli cells within the testes to promote the maturation of LH receptors and to produce an androgen-binding protein. Circulating testosterone and estradiol influence the synthesis of the hormones involved in the negative feedback pathway. Testosterone, the major androgenic hormone, accounts for 95% of the androgen concentration. The primary source of testosterone is the testes; however, 3% to 5% of the testosterone concentration is derived from direct adrenal secretion. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/18 UR - accesspharmacy.mhmedical.com/content.aspx?aid=1179733519 ER -