Dehydroepiandrosterone replacement for patients with adrenal insufficiency
Circulating DHEA/DHEA-S concentrations show characteristic changes with age. DHEA/DHEA-S are the principal steroids released by the human fetal adrenal gland and concentrations fall during infancy as the fetal zone of the adrenal involutes. However, concentrations of DHEA/DHEA-S rise again in mid-ch...
Saved in:
Published in | The Lancet (British edition) Vol. 357; no. 9266; pp. 1381 - 1382 |
---|---|
Main Authors | , |
Format | Journal Article |
Language | English |
Published |
London
Elsevier Ltd
05.05.2001
Lancet Elsevier Limited |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Circulating DHEA/DHEA-S concentrations show characteristic changes with age. DHEA/DHEA-S are the principal steroids released by the human fetal adrenal gland and concentrations fall during infancy as the fetal zone of the adrenal involutes. However, concentrations of DHEA/DHEA-S rise again in mid-childhood as the zona reticularis matures ("adrenarche"), and reach a peak at 20-30 years of age.2 At this time, DHEA-S concentrations are approximately 20 times greater than those of cortisol because of increased secretion and decreased clearance of DHEA-S, and conversion of DHEA to DHEA-S in the adrenal and liver. Thereafter, a steady decline in DHEA/DHEA-S occurs with age, such that by age 70 circulating concentrations are only 20-30% of the peak concentrations of young adulthood.2 Thus, normal elderly individuals might be deemed "deficient" in DHEA/DHEA-S. |
---|---|
Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-3 content type line 23 ObjectType-Review-1 |
ISSN: | 0140-6736 1474-547X |
DOI: | 10.1016/S0140-6736(00)04617-1 |