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      Discontinuation of Growth Hormone Therapy in Growth-Hormone-Deficient Patients: Assessment of Body Fat Mass Using Bioelectrical Impedance

      ,

      Hormone Research in Paediatrics

      S. Karger AG

      Growth hormone deficiency, Body composition, Bioelectrical impedance

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          Abstract

          The changes in body composition evaluated by the mean of bioelectrical impedance analysis (BIA) have been observed in a group of 16 male adolescents at the time of discontinuation of growth hormone (GH) therapy as well as at 6 and 12 weeks later. After reevaluation of their endocrine function, 6 patients (3 craniopharyngioma, 1 irradiation, 1 malformative, 1 idiopathic) had a profound persistent GH deficiency (maximum peak of GH under provocative tests < 5 ng/ml and low IGF-1 levels), while 10 patients had a normal somatotropic function. Both groups were comparable as far as age, weight and body mass index are concerned. Fat weight is significantly higher in the GH-deficient patients (9.9 ± 2.6 kg) than in boys with a normal somatotropic function (6.0 ± 1.1 kg) at the time of the discontinuation of GH therapy (p < 0.01). 3 months later, the increase in fat weight is significant only in the group of patients with severe GH deficiency (+4.1 ± 2.2 kg; p < 0.05), the difference between the 2 groups (14.0 ± 3.5 and 7.3 ± 1.0 kg) becoming highly significant (p < 0.001). Lean body mass is lower in the GH-deficient patients and decreases slightly after GH discontinuation, while no significant variation is observed in the group of non GH-deficient boys. Although BIA assessement of body composition may be discussed when applied to GH-deficient subjects, these results show that such patients should be reevaluated after the discontinuation of GH therapy, including examination of the possible metabolic consequences of GH deficiency.

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          Author and article information

          Journal
          HRE
          Horm Res Paediatr
          10.1159/issn.1663-2818
          Hormone Research in Paediatrics
          S. Karger AG
          1663-2818
          1663-2826
          1993
          1993
          03 December 2008
          : 39
          : 5-6
          : 192-196
          Affiliations
          Centre d’Endocrinologie Pédiatrique et Croissance, Bordeaux, France
          Article
          182734 Horm Res 1993;39:192–196
          10.1159/000182734
          8314202
          © 1993 S. Karger AG, Basel

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          Page count
          Pages: 5
          Categories
          Original Paper

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