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I. Hormonal Changes During Normal Puberty

Pierre C. Sizonenko

Am J Dis Child. 1978;132(7):704-712.

Abstract
• Hormonal changes during puberty have been well described: rise of gonadotropins followed by the rise of gonadal secretions at ages 10 to 16 years. The most striking new data are in fact concerning events that occur before puberty, first during the first months of life, second at age 7 years. The first event consists of a rise of gonadal steroids, which gives a hormonal imprint that might be important for the future of the child. The second event concerns the prepubertal maturation of the androgenic zone of the adrenal cortex and the increasing secretion with age of the adrenal androgens. The mechanism of onset of both events is poorly explained. What causes the rise of gonadal steroids during infancy is unknown. Which pituitary factor, in addition to ACTH, stimulates the cortico-adrenal androgenic zone, and which mechanism regulates its secretion remain unknown.

(Am J Dis Child 132:704-712, 1978)

Author Affiliations
From the Endocrine Unit, Department of Pediatrics and Genetics, University of Geneva School of Medicine.

Footnotes
Reprint requests to Endocrine Unit, Department of Pediatrics and Genetics, University of Geneva, 30 Blvd de la Cluse, CH-1211 Geneva 4, Switzerland (Dr Sizonenko).

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