title: [Continuous measurement of urine beta-FSH excretion in men with hypogonadism].
abstract: OBJECTIVE
  To measure continuously the urine beta-FSH excretion in the patients with male hypogonadism, and to evaluate the significance of urine beta-FSH when used in the clinical practice and pathophysiological study on male hypogonadism.
  
  
  METHODS
  Four health male volunteers (aged 19, 22, 27 and 33 years), four patients with the hypogonadotropic hypogonadism (aged 17, 17, 19 and 24 years) and five patients with idiopathy hypogonadism (hypergonadotropic, aged 16, 16, 17, 20 and 22 years) were asked to collect their morning-first urine samples for 30 to 32 days. One normal men collected his urine samples for 63 days. The urine beta-FSH was assayed with the method of EIA, then corrected by creatinine (Cr) concentration.
  
  
  RESULTS
  The urine beta-FSH level of normal men was (1.16 +/- 0.20) micrograms/mg Cr, with the peak variation in their curves, peak level at 2.76 micrograms/mg Cr. The levels of urine beta-FSH of 4 patients with the hypogonadotropic hypogonadism were lower significantly than those of normal men [(0.58 +/- 0.31) (0.93 +/- 0.47) (0.47 +/- 0.33) and (0.60 +/- 0.40) micrograms/mg Cr], without fluctuation in their curves. beta-FSH levels of 5 patients with idiopathy hypogonadism were higher significantly [(3.02 +/- 0.93), (4.36 +/- 1.12), (4.79 +/- 0.78), (4.64 +/- 1.42) and (3.88 +/- 1.42) micrograms/mg Cr], with irregular fluctuation, the highest peak level at 6.83 micrograms/mg Cr. The second sexual characteristics of hypogonadal patients were poor and serum testosterone levels low.
  
  
  CONCLUSIONS
  The urine beta-FSH level raised with irregular fluctuation in patients with idiopathy hypogonadism, while lowed without any fluctuation in patients with the hypogonadism. These findings suggested that the urine beta-FSH excretion was useful for the clinically classified diagnoses and pathophysiological study on male hypogonadism, and for observing the treatment reaction of androgen replacement.
authors.affiliation: Department of Endocrinology, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China.
authors.forename: Yu-Gui
authors.initials: YG
authors.lastname: Cui
authors.forename: Xiao-Fang
authors.initials: XF
authors.lastname: Yang
authors.forename: Ling
authors.initials: L
authors.lastname: Song
authors.forename: Ting
authors.initials: T
authors.lastname: Feng
authors.forename: Yue
authors.initials: Y
authors.lastname: Jia
authors.forename: Fu-Song
authors.initials: FS
authors.lastname: Di
mesh_terms: D000293:Adolescent; D000328:Adult; D037201:Follicle Stimulating Hormone, beta Subunit / Q000652:urine*; D006801:Humans; D007006:Hypogonadism / Q000378:metabolism / Q000652:urine*; D007986:Luteinizing Hormone / Q000652:urine; D008297:Male; D013739:Testosterone / Q000652:urine
chemical_list: D037201:Follicle Stimulating Hormone, beta Subunit; D013739:Testosterone; D007986:Luteinizing Hormone