OBJECTIVE: Inhibition of pituitary gonadotropin secretion in men by T is principally mediated by aromatization to estrogen (E), which inhibits hypothalamic secretion of GnRH. We hypothesized that adult-onset isolated hypogonadotropic hypogonadism (IHH) might result from an altered central set-point for E-mediated negative feedback. DESIGN AND SETTING: Longitudinal clinical investigation unit-based evaluation of the clinical and biochemical response to E-receptor blockade. PATIENT(S): A 31-year-old man presenting with an 18-month history of sexual dysfunction resulting from severe adult-onset IHH (LH 1.7 U/L, FSH 2.0 U/L, T 3.5 nmol/L). INTERVENTION(S): Initial therapy with 50 mg of clomiphene citrate (CC) three times a day for 7 days, with overnight LH pulse profiling and 9 am T levels evaluated at baseline and on completion. A 2-month washout period, followed by low-dose maintenance therapy (25-50 mg/d) for 4 months. MAIN OUTCOME MEASURE(S): Baseline and stimulated T levels and LH pulsatility; effect on sexual function. RESULT(S): Clomiphene therapy resulted in complete normalization of pulsatile gonadotropin secretion, serum T level, and sexual function. CONCLUSION(S): Isolated hypogonadotropic hypogonadism may result from an acquired defect of enhanced hypothalamic sensitivity to E-mediated negative feedback. Whereas direct T replacement therapy can further suppress endogenous gonadotropin secretion, treating IHH men with gonadotropins can stimulate endogenous T secretion and enhance fertility potential. On theoretical grounds, reversal of gonadotropin deficiency with CC might be expected to have a similar biological effect.
anyone have any success with this protocol. the way i read it one could do:
50mg clomiphene citrate 3x/day for 7days with an HCG pulse at night(500 IU) followed by 2months washout(nothing i guess) and after that would find the right maintanience dose.