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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Dexamethasone suppression test and plasma dexamethasone levels in bulimia.

A 1-mg dexamethasone suppression test (DST) was carried out in 66 women with bulimia and in 26 age- and sex-matched controls. Blood samples were obtained at 4 PM on the day following dexamethasone ingestion, and levels of cortisol and of dexamethasone in the plasma were measured. Thirty-two percent of the patients vs only 7% of the controls had plasma cortisol levels of 140 nmol/L (5 micrograms/dL) or greater following the DST (a positive DST). The plasma levels of dexamethasone varied substantially, and there was a significant inverse relationship between the plasma level of cortisol and that of dexamethasone. Patients with positive DST results had lower levels of plasma dexamethasone than did those with negative DST results, and the mean plasma level of dexamethasone was lower in the bulimic group than in the control group. These results suggest that factors other than a disturbance of hypothalamic-pituitary-adrenal activity may contribute to positive DST results in bulimia.[1]


  1. Dexamethasone suppression test and plasma dexamethasone levels in bulimia. Walsh, B.T., Lo, E.S., Cooper, T., Lindy, D.C., Roose, S.P., Gladis, M., Glassman, A.H. Arch. Gen. Psychiatry (1987) [Pubmed]
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