GROWTH-HORMONE REPLACEMENT DOES NOT IMPROVE PSYCHOLOGICAL WELL-BEING IN ADULT HYPOPITUITARISM - A RANDOMIZED CROSSOVER TRIAL

In order to examine the effect of growth hormone (GH) on psychological parameters in adult hypopituitarism, 20 adults were studied, mean age 47 years (range 20-69) with hypopituitarism and confirmed GH deficien cy (GH <3 mu g/l following clonidine 0.15 mg/m(2)). Subjects were rand omly allocated to either GH (up to 0.25 U/kg per week in daily doses) or placebo for 3 months before crossover to the opposite treatment arm . Psychological parameters were assessed by self-reported questionnair es (Disease Specific Questionnaire (DSQ), the Symptom Checklist-90 (SC L-90), and the Social Adjustment Scale (SAS)) at baseline and monthly intervals to the end of the trial. Both SAS and SCL-90 total scores sh owed a significant decline with respect to time (p=.03 and .013 respec tively), although this was not a function of active treatment. DSQ sho wed a trend to decline (p=.06), but no effect of active treatment. Non e of the subscale components of the SCL-90 showed any significant chan ge on active treatment. Improvement in psychological parameters occurs as a function of enrolment to a clinical trial, rather than active GH replacement in adult hypopituitarism. (C) 1998 Elsevier Science Ltd. All rights reserved.