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  • Title: Growth hormone secretion in patients with constitutional delay of growth and pubertal development.
    Author: Lanes R, Bohorquez L, Leal V, Hernández G, Borges M, Hurtado E, Moncada G.
    Journal: J Pediatr; 1986 Nov; 109(5):781-3. PubMed ID: 3772658.
    Abstract:
    Growth hormone levels were measured every 30 minutes during sleep over 9 hours in 20 prepubertal patients with constitutional delay of growth and puberty (CGD) and in 10 age-matched controls, all of whom had had normal GH responses to an orally administered dose of clonidine. We found no significant difference in the mean 9-hour overnight GH concentration between groups (4.5 +/- 1.8 ng/ml (mean +/- SD) in the CGD group, 4.4 +/- 2.8 ng/ml in the control group). Total GH output (258 +/- 99 U vs 222 +/- 135 U), total number of nocturnal GH pulses (3.6 +/- 0.8 vs 3.3 +/- 1.3), mean peak GH response during nocturnal sampling (13 +/- 1.2 ng/ml vs 13.2 +/- 1.3 ng/ml), and basal somatomedin C concentrations were not different in the children with growth delay and controls. We conclude that prepubertal patients with constitutional delay of growth and puberty secrete GH normally and do not seem to have any abnormality in GH regulation.
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