Abstract
Purpose
The effects of growth hormone (GH) replacement on bone mass and body composition in adult with GH deficiency (AGHD) are still debated with regard to their persistence in the long term. Moreover, the impact of the gender on the response to GH is controversial. Aim of this study was to evaluate the long-term effects of rhGH replacement on bone mass and body composition in a monocentric cohort of patients with AGHD.
Methods
Data from 118 patients with AGHD (34.8 ± 14.4 years, 43 women and 75 men) treated with rhGH for a period of at least 3 years up to a maximum of 10 were retrospectively collected. Bone mineral density (BMD) at the lumbar spine, femur, and 1/3 radius, and total and truncular body composition were evaluated by dual-energy X-ray absorption (DXA) before and during treatment. Clinical and laboratory evaluations were performed before and during the treatment period on an annual basis.
Results
Lumbar spine BMD consistently increased in males, while it decreased in females after a transient improvement observed during the first 4 years of therapy. There were no significant changes in femoral and 1/3 radial BMD in either sexes. Lean mass significantly increased in both sexes, while fat mass only decreased in males.
Conclusions
In AGHD patients long-term rhGH replacement therapy induces a positive effect with regard to bone mass and body composition. A sexual dimorphism in the response to treatment is evident, with males displaying a more favorable outcome.
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Data availability
Data are available on request from the corresponding author.
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We gratefully acknowledge the skillful assistance of Prof. Maristella Sena in the formal revision of the manuscript.
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All authors contributed to the study conception and design. Material preparation and data collection were performed by R.L., F.P., M.S., and M.L. Statistical analysis was performed by C.G., C.P., and M.P. The first draft of the manuscript was written by A.R. and A.R., and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Rossini, A., Lanzi, R., Galeone, C. et al. Bone and body composition analyses by DXA in adults with GH deficiency: effects of long-term replacement therapy. Endocrine 74, 666–675 (2021). https://doi.org/10.1007/s12020-021-02835-6
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DOI: https://doi.org/10.1007/s12020-021-02835-6