title: Serum bioactive and immunoreactive follicle stimulating hormone during chronic treatment with gonadotropin releasing hormone agonist in elderly men.
abstract: Chronic administration of GnRH agonists "down regulates" the pituitary and decreases LH and FSH serum levels. Changes in the bioactivity of FSH have not been adequately assessed under such treatment, for lack of a proper test. We examined serum changes under GnRH agonist treatment among 12 healthy elderly men suffering only from benign prostatic hypertrophy, for up to one year, using a modification of a granulosa cell bioassay for the determination of FSH bioactivity. While radioimmunoassay-FSH decreased, we noticed a significant increase in the bioactivity of this hormone. The clinical importance of this increase is discussed.
authors.affiliation: Department of Urology, Ichilov Hospital, Tel-Aviv Medical Center, Israel.
authors.forename: H
authors.initials: H
authors.lastname: Matzkin
authors.forename: Z
authors.initials: Z
authors.lastname: Braf
authors.forename: N
authors.initials: N
authors.lastname: Dekel
mesh_terms: D000368:Aged; D000704:Analysis of Variance; D000818:Animals; D001681:Biological Assay; D002478:Cells, Cultured; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood*; D007987:Gonadotropin-Releasing Hormone / Q000031:analogs & derivatives* / Q000627:therapeutic use; D006107:Granulosa Cells; D006801:Humans; D008186:Luteolytic Agents / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D011470:Prostatic Hyperplasia / Q000097:blood / Q000188:drug therapy*; D051381:Rats; D012044:Regression Analysis; D013997:Time Factors; D017329:Triptorelin Pamoate
chemical_list: D008186:Luteolytic Agents; D017329:Triptorelin Pamoate; D007987:Gonadotropin-Releasing Hormone; D005640:Follicle Stimulating Hormone