Abnormalities in the hypothalamic-pituitary-adrenocortical axis in patients with chronic renal failure.

The recently described human corticotropin-releasing factor was administered to eight patients with chronic renal failure in order to assess hypothalamic-pituitary-adrenocortical (HPA) function. Acute administration of corticotropin-releasing factor lead to a diminished increase of the basally elevated levels of ACTH and beta-endorphin immunoreactivity in patients on chronic hemodialysis. Basal plasma cortisol concentration was normal in end-stage renal disease; however, considering the corresponding elevated ACTH concentrations, cortisol levels were inadequately low. Thus, the hypothalamus as well as the adrenal gland seems to contribute to the alterations in HPA function observed in patients with chronic renal failure; involvement of the pituitary gland and effects of metabolic alterations cannot be ruled out.

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