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  • Title: Combined test of hypothalamic-pituitary function in growth retarded children treated with growth hormone. I. Secretion of growth hormone and somatomedin before and after treatment.
    Author: Kastrup KW, Andersen H, Eskildsen PC, Jacobsen BB, Krabbe S, Petersen KE.
    Journal: Acta Paediatr Scand Suppl; 1979; 277():8-13. PubMed ID: 396757.
    Abstract:
    In 23 growth retarded children two consecutive insulin tolerance tests (ITT) were performed to establish a diagnosis of growth hormone (GH) deficiency. Nine children did not respond (GH peak value less than 8 mU/1), whereas 14 were classified as having partial GH deficiency (GH peak value less than 20 mU/1). All were treated for an average period of 40 months with human growth hormone (HGH). In a combined stimulation test at the end of the treatment period 9 children demonstrated a persistent GH deficiency, whereas a normal response was found in 14 of the previous partial GH deficient children. During treatment the monthly growth rate rose from 0.21 cm 0.58 cm in the GH deficient children and from 0.31 cm to 0.70 cm in the partial deficient children, in most of whom spontaneous pubertal development occurred during treatment. Somatomedin (SM) values were decreased in the GH deficient children before and after treatment but increased to normal levels during treatment. Growth velocity in these children during treatment was correlated to SM values before treatment. In the partial GH deficient children SM values were subnormal before but normal after treatment. This supports the assumption that in some children with constitutional delay in puberty a reversible functional hypopituitarism exists, which is normalized after the onset of puberty, due to androgens sensitizing growth hormone releasing mechanisms. Treatment with HGH may induce increased growth velocity in some of these patients.
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