The hypothalamic-pituitary-adrenal axis in obesity.
The hypothalamic-pituitary-adrenal (HPA) axis normally maintains the concentration of cortisol within a narrow range with a diurnal variation characterized by higher cortisol concentrations in the morning and reduced levels in the evening. Excessive or deficient secretion of cortisol is associated with pathologic changes. Obesity has been linked with age, sex and racial alterations in the functioning of the HPA axis which are reviewed. The possible relationship of altered HPA axis activity with the long-term complications of obesity are considered.
Department of Pediatrics, University of Maryland School of Medicine, Baltimore 21201, USA.
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Chalew
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Nagel
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Shore
D000324:Adrenocorticotropic Hormone / Q000097:blood; D000375:Aging / Q000097:blood / Q000502:physiology; D005260:Female; D006801:Humans; D006854:Hydrocortisone / Q000097:blood; D007030:Hypothalamo-Hypophyseal System / Q000502:physiology*; D008297:Male; D009765:Obesity / Q000097:blood / Q000503:physiopathology*; D010913:Pituitary-Adrenal System / Q000502:physiology*; D044469:Racial Groups; D012727:Sex Characteristics; D013997:Time Factors
D000324:Adrenocorticotropic Hormone; D006854:Hydrocortisone