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  • Title: Growth hormone deficiency in the adult.
    Author: Doga M, Bonadonna S, Gola M, Mazziotti G, Giustina A.
    Journal: Pituitary; 2006; 9(4):305-11. PubMed ID: 17077947.
    Abstract:
    Growth hormone deficiency (GHD) in adults may be of either adult or childhood onset and may occur as isolated GHD or as multiple hormone deficiencies. Adult-onset GHD (AoGHD) usually results from damage to the pituitary gland or hypothalamus. GH is frequently undetectable in normal subjects and thus GHD cannot be distinguished from the normal state using a single random GH measurement. In general, a stimulation test is required to recognize GHD. Insulin tolerance test (ITT) has been considered the gold standard by the most important scientific societies, although alternative tests, in particular GHRH plus arginine have been proposed as valuable alternative to ITT. The clinical syndrome associated with AoGHD is characterized by a wide array of symptoms and important chronic complications, such as cardiovascular complications, which may be responsible for an increased mortality. The rationale for GH replacement in adults GHD patients is justified by the beneficial effects on some clinical end-points, such as quality of life (QoL) and cardiovascular risk factors, whereas the effects on mortality risk are still controversial. Over the recent years, guidelines on the use of rhGH as a substitution treatment in adult hypopituitarism have been issued by international (Growth hormone research society-GRS, Endocrine Society) and relevant national (National Institute of Clinical Excellence-UK, NICE) institutions. The aim of the paper is to review and discuss these guidelines.
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