Effects of eight months treatment with graded doses of a growth hormone (GH)-releasing peptide in GH-deficient children

The Journal of Clinical Endocrinology and Metabolism
V MericqG R Merriam

Abstract

Stimulation of pituitary GH secretion with administered GHRH can be effective therapy for those GH deficient (GHD) patients whose disorder results from insufficient endogenous GHRH secretion. We have previously shown that most such patients also respond acutely to the GH-releasing peptides (GHRP's), which have a different mechanism of action from GHRH, with release of GH. In this study we tested whether the GH response to a newer GHRP, GHRP-2, would be sustained over time. Six prepubertal children with GHD and growth failure received stepwise increasing s.c. doses of GHRP-2, at 0.3, 1.0, and 3.0 micrograms/kg/day, in successive 2-month treatment periods, with monitoring of overnight 12 h episodic GH secretion and toxicity measures at the end of each period. During a fourth 2-month period, they received 3 micrograms/kg GHRP-2 together with 3 micrograms/kg s.c. GHRH. Serum levels of IGF-I and IGFBP-3 were also measured, and stadiometer height measurements were recorded. GHRP-2 administration produced a dosewise increase in overnight GH secretion. GH profiles showed that the effect of GHRP-2 injections was relatively brief, with little effect upon GH secretion later in the night. Serum levels of IGF-I and of IGFBP-3 did not increa...Continue Reading

References

Aug 1, 1992·The Journal of Pediatrics·P PirazzoliS Gualandi
Apr 1, 1991·Endocrinology·C Y BowersT M Badger
Apr 1, 1990·The Journal of Clinical Endocrinology and Metabolism·C Y BowersM O Thorner
Jan 3, 1985·The New England Journal of Medicine·M O ThornerR M Blizzard
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Jan 1, 1993·The Journal of Pediatric Endocrinology·C Y Bowers
Nov 1, 1995·Clinical Endocrinology·Z LaronA Silbergeld

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Citations

Aug 28, 2010·International Journal of Peptides·Johannes D Veldhuis, Cyril Y Bowers
Jan 2, 2007·Reviews in Endocrine & Metabolic Disorders·Eleni V Dimaraki, Craig A Jaffe
Jan 24, 2007·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Brian S ShepherdGregory M Weber

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