Benefits of long-term GH therapy in Prader-Willi syndrome: a 4-year study

The Journal of Clinical Endocrinology and Metabolism
Aaron L CarrelDavid B Allen

Abstract

Obesity, poor growth, and hypotonia in children with Prader-Willi syndrome (PWS) are accompanied by abnormal body composition resembling a GH-deficient state. Hypothalamic dysfunction in PWS includes decreased GH secretion, suggesting a possible therapeutic role for GH treatment. While short-term benefits of treatment with GH have been shown, whether these beneficial effects are dose dependent and persist or wane with prolonged therapy remains uncertain. Effects of 24 additional months of GH treatment at varying doses (0.3, 1.0, and 1.5 mg/m(2).d) on growth, body composition, strength and agility, pulmonary function, resting energy expenditure (REE), and fat utilization were assessed in 46 children with PWS, who had previously been treated with GH therapy (1 mg/m(2).d) for 12-24 months. Percent body fat, lean muscle mass, and bone mineral density (BMD) were measured by dual x-ray absorptiometry. Indirect calorimetry was used to determine REE and to calculate respiratory quotient. A modified Bruininks-Oseretski test of physical performance evaluated strength and agility. During months 24-48 of GH therapy, continued beneficial effects on body composition (decrease in fat mass and increase in lean body mass), growth velocity, and ...Continue Reading

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Citations

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