Pulsatile iv infusion of recombinant human LH in leuprolide-suppressed men unmasks impoverished Leydig-cell secretory responsiveness to midphysiological LH drive in the aging male.


The present investigation tests the clinical hypothesis that Leydig-cell responsiveness to pulsatile and midphysiological LH drive is impaired in older men. To this end, we implemented a novel clinical investigative paradigm consisting of preadministration of an LH-down-regulating dose (3.75 mg) of leuprolide acetate followed, 3-4 wk later, by controlled… (More)


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