Volume 67, Issue 4 pp. 485-492

Long-term effects of growth hormone (GH) treatment on body composition and bone mineral density in short children born small-for-gestational-age: six-year follow-up of a randomized controlled GH trial

Ruben H. Willemsen

Ruben H. Willemsen

Department of Pediatrics, Division of Endocrinology, Erasmus MC Sophia, Rotterdam, the Netherlands,

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Nicolette J. T. Arends

Nicolette J. T. Arends

Department of Pediatrics, Division of Endocrinology, Erasmus MC Sophia, Rotterdam, the Netherlands,

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Willie M. Bakker-van Waarde

Willie M. Bakker-van Waarde

Beatrix Children's Hospital, Groningen, the Netherlands,

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Maarten Jansen

Maarten Jansen

Wilhelmina Children's Hospital, Utrecht, the Netherlands,

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Edgar G. A. H. Van Mil

Edgar G. A. H. Van Mil

Free University Medical Center, Amsterdam, the Netherlands,

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Jaap Mulder

Jaap Mulder

Rijnstate Hospital, Arnhem, the Netherlands,

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Roelof J. Odink

Roelof J. Odink

Catharina Hospital, Eindhoven, the Netherlands,

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Maarten Reeser

Maarten Reeser

Juliana Children's Hospital, The Hague, the Netherlands,

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Ciska Rongen-Westerlaken

Ciska Rongen-Westerlaken

Canisius Wilhelmina Hospital, Nijmegen, the Netherlands,

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Wilhelmina H. Stokvis-Brantsma

Wilhelmina H. Stokvis-Brantsma

Leiden University Medical Center, Leiden, the Netherlands

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Johan J. J. Waelkens

Johan J. J. Waelkens

Catharina Hospital, Eindhoven, the Netherlands,

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Anita C. S. Hokken-Koelega

Anita C. S. Hokken-Koelega

Department of Pediatrics, Division of Endocrinology, Erasmus MC Sophia, Rotterdam, the Netherlands,

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First published: 19 May 2007
Citations: 52
Ruben Willemsen, Erasmus MC Sophia, Room number SB-2603, Dr Molewaterplein 60, 3015 GJ Rotterdam, the Netherlands. Tel.: +31 10 46 32086; Fax: +31 10 46 36811; E-mail: [email protected]

Summary

Context Alterations in the GH-IGF-I axis in short small-for-gestational-age (SGA) children might be associated with abnormalities in bone mineral density (BMD) and body composition. In addition, birth weight has been inversely associated with diabetes and cardiovascular disease in adult life. Data on detailed body composition in short SGA children and long-term effects of GH treatment are very scarce.

Objective To investigate effects of long-term GH treatment on body composition and BMD by dual energy X-ray absorptiometry (DXA) in short SGA children.

Design Longitudinal 6-year GH study with a randomized controlled part for 3 years.

Results At baseline, fat percentage standard deviation score (SDS) and lumbar spine BMD SDS corrected for height (BMADLS SDS) were significantly lower than zero. Lean body mass (LBM) SDS adjusted for age was also reduced, but LBM adjusted for height (LBM SDSheight) was not decreased. GH treatment induced a decrease in fat percentage SDS and an increase in BMADLS SDS. LBM SDSheight remained similar in GH-treated children, but deteriorated in untreated controls. When these untreated controls subsequently started GH treatment, their LBM SDSheight rapidly normalized to values comparable with zero.

Conclusion During long-term GH treatment in short SGA children, fat percentage SDS decreased and BMADLS SDS increased. These effects of GH treatment were most prominent in children who started treatment at a younger age and in those with greater height gain during GH treatment. LBM SDSheight remained around 0 SDS in GH-treated children, but declined to low normal values in untreated controls.

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