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      Subcutaneous Treatment with Growth Hormone-Releasing Hormone for Short Stature

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          In the present study we report the effects of therapy with growth hormone-releasing factor (1–29)NH2 (GRF) on growth rate, plasma levels of insulin growth factor I (IGF-I) and growth hormone (GH) secretion in 11 children who were selected solely on the basis of their short stature and normal GH secretion on standard provocative tests. All children received GRF for 6 months (5 µg/kg body weight subcutaneously) each evening. The 24-hour GH secretory profile was studied before and after 6 months of treatment. Simultaneously, GH secretory responses to single intravenous bolus GRF (1.5 µg/kg body weight) were also studied before, during, and 6 months off therapy with GRF(1–29)NH2. Plasma levels of IGF-I were measured before, during (1,2 and 6 months), and after 6 months off therapy with GRF. Statural growth was measured at 3-month intervals. The peak plasma GH level in response to GRF was 56.04 ± (SD) 24.46 ng/ml before treatment, and similar results were found after therapy. The 24-hour GH secretory profile did not show differences before, during, and after treatment. Comparably, no differences were found in GH pulse frequency, pulse amplitude, pulse height, pulse increment, pulse area and total area before, and 6 months off therapy with GRF. The increments in serum IGF-I achieved were not significantly different at all intervals studied. All patients increased growth velocities (mean ± SD, cm/year) in response to GRF therapy. Our results demonstrate that GRF administration was effective in accelerating growth velocity in 11 children without GH deficiency.

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          Author and article information

          Horm Res Paediatr
          Hormone Research in Paediatrics
          S. Karger AG
          02 December 2008
          : 30
          : 6
          : 252-257
          aDepartments of Pediatrics, University of Madrid and Niño Jesús Hospital; bDepartment of Pediatrics, Ramón y Cajal Hospital, and cDepartment of Biochemistry, University of Alcalá de Henares, Madrid, Spain
          181072 Horm Res 1988;30:252–257
          © 1988 S. Karger AG, Basel

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          Pages: 6
          Original Paper


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