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  • Title: Growth in Turner's syndrome: long term treatment with low dose ethinyl estradiol.
    Author: Martínez A, Heinrich JJ, Domené H, Escobar ME, Jasper H, Montuori E, Bergadá G.
    Journal: J Clin Endocrinol Metab; 1987 Aug; 65(2):253-7. PubMed ID: 3597706.
    Abstract:
    The growth response to 100 ng/kg BW X day ethinyl estradiol (2-4 micrograms/day) given for 18 months was studied in a group of nine patients with Turner's syndrome, aged 8.6-13.3 yr. All patients were prepubertal and had elevated gonadotropin levels. Growth velocity increased from 3.09 +/- 1.05 (+/-SD) to 7.09 +/- 1.47 cm/yr in the first 6 months, 6.08 +/- 1.78 cm/yr in the second 6 months, and 4.03 +/- 1.65 cm/yr in the third 6 months. Bone age increased a mean of 0.82 +/- 0.34, 0.89 +/- 0.79, and 0.74 +/- 0.59 yr, respectively, in the three 6-month periods. Predicted height prognosis did not change after any period. All patients had pubertal changes, limited in most to slight breast development. Mean diurnal spontaneous GH secretion did not change during treatment. Plasma somatomedin-C levels were low before treatment, and ethinyl estradiol did not significantly increase somatomedin-C values. Our data confirm the ability of a low dose of ethinyl estradiol to increase growth velocity in girls with Turner's syndrome, although the effect diminished with time, and the excess bone age advancement precluded improvement of predicted height.
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