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Journal of Clinical Endocrinology & Metabolism, Vol 75, 930-934, Copyright © 1992 by Endocrine Society

ARTICLES

Alterations in spontaneous growth hormone (GH) secretion and the response to GH-releasing hormone in children with nonorganic nutritional dwarfing

JE Abdenur, MT Pugliese, C Cervantes, P Fort and F Lifshitz
Department of Pediatrics, North Shore University Hospital, Cornell University Medical College, Manhasset, New York 11030.

The effects of suboptimal nutrition on the spontaneous overnight GH secretion (SGHS) and the GH response to GHRH were studied. Sixteen patients with nonorganic nutritional dwarfing (ND) were compared with 25 healthy short children with familial short stature with or without constitutional growth delay (FC). The effects of puberty were also assessed. All patients underwent an overnight study to assess SGHS with serum GH levels sampled every 20 min for 12 h, and a GHRH stimulation test was administered. Pubertal ND children had a blunted SGHS with a mean overnight GH level of 4.9 +/- 1.1 micrograms/L, significantly less than the level of 6.2 +/- 1.8 micrograms/L of the pubertal FC children (P less than 0.05). Also, prepubertal ND patients had an area under the curve in GH secretion after GHRH which was greater than that of the pubertal ND patients (2483 +/- 1581 vs. 1600 +/- 1056, P less than 0.05). The peak GH response to GHRH in the prepubertal ND patients was also higher than that of the pubertal ND patients (51.8 +/- 22.1 micrograms/L vs. 22.5 +/- 15.4 micrograms/L, P less than 0.05). This study shows that the SGHS is attenuated in ND patients during puberty but their GH response to GHRH is increased before adolescence. These abnormalities may represent compensatory mechanisms to energy restriction and may increase our understanding of the poor growth seen in ND patients.


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A. Carrillo, R. Rising, R. Tverskaya, and F. Lifshitz
Effects of Exogenous Recombinant Human Growth Hormone on an Animal Model of Suboptimal Nutrition
J. Am. Coll. Nutr., June 1, 1998; 17(3): 276 - 281.
[Abstract] [Full Text] [PDF]


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