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Journal of Clinical Endocrinology & Metabolism, Vol 54, 192-195, Copyright © 1982 by Endocrine Society

ARTICLES

Transient rise in luteinizing hormone and follicle stimulating hormone secretion during puberty studied in 113 healthy girls with tall stature

R Illig, T Torresani, H Bucher and A Prader

To establish normal values for the LRH test in females around the age of puberty, we had the opportunity to study 113 health girls with tall stature. Plasma LH and FSH levels were determined before and after a bolus injection of LRH (25 microgram/m2). Hormone results could not be correlated with chronological age, bone age, height, weight, or public hair stages. However hormone results showed significant differences when grouped according to breast development and menarche. There was a continuous rise of gonadotropin levels, particularly of basal and peak LH values, in parallel with breast maturation, and a remarkable fall in girls after menarche when tested during the first half of the menstrual cycle. It appears that a transient rise in gonadotropin secretion is essential for the maturation of ovarian function, which, in turn, switches pituitary-gonadal regulation from the pubertal tonic to the adult cyclic type.




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Copyright © 1982 by The Endocrine Society