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N Engl J Med. 1981 Dec 24;305(26):1546-50.

Short-term treatment of idiopathic precocious puberty with a long-acting analogue of luteinizing hormone-releasing hormone. A preliminary report.


The uncoupling of pituitary stimulation and response observed in adults during administration of the luteinizing hormone-releasing hormone analogue, D-Trp6-Pro9-NEt-LHRH (LHRHa) suggested that this drug might be useful in treating precocious puberty. We treated five girls with idiopathic precocious puberty (ages two to eight) for eight weeks with daily subcutaneous injections of LHRHa. The patients had Tanner II to IV pubertal development, advanced bone age, an estrogen effect on vaginal smear, measurable basal gonadotropin levels with pulsed nocturnal secretion, and a pubertal gonadotropin response to LHRH. Irregular vaginal bleeding was present in three patients. LHRHa significantly decreased basal (P less than 0.025) and LHRH-stimulated (P less than 0.01) gonadotropin levels as well as serum estradiol (P less than 0.05). The vaginal maturation-index score, which reflects the estrogen effect, fell by 25 per cent. Eight weeks after stopping treatment, all hormonal values and the vaginal maturation index had returned to pretreatment levels. These favorable short-term results will need further study before the benefits and risks of chronic treatment with LHRHa can be adequately assessed.

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