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The effects of long-term normalization of sodium balance on linear growth in disorders with aldosterone deficiency
Insights
Normalizing sodium balance in children with aldosterone deficiency significantly improves linear growth and pubertal development. This balance is key for healthy growth and development in these pediatric patients.
Area of Science:
- Pediatric Endocrinology
- Mineralocorticoid Physiology
- Growth and Development
Background:
- Aldosterone deficiency in children presents with various etiologies, impacting growth and development.
- Maintaining sodium balance is crucial for overall pediatric health.
- Previous studies highlight the role of mineralocorticoids but lack comprehensive data on sodium balance normalization's impact.
Purpose of the Study:
- To evaluate the effect of normalizing sodium balance in children with aldosterone deficiency.
- To assess the impact on linear growth, pubertal development, and hormonal markers.
- To identify sensitive indicators of adequate mineralocorticoid and glucocorticoid replacement therapy.
Main Methods:
- Studied children with aldosterone deficiency from different causes, including salt-losing congenital adrenal hyperplasia (CAH) and Addison's disease.
- Administered mineralocorticoid therapy to normalize plasma renin activity (PRA).
- Monitored linear growth, serum 17-hydroxyprogesterone (17-OHP), androgens, and other relevant hormonal markers.
Main Results:
- Normalization of sodium balance with mineralocorticoids markedly increased linear growth in children with CAH.
- Achieving adequate sodium balance led to further reductions in 17-OHP and androgens, potentially lowering glucocorticoid doses.
- Improved growth and onset of puberty were observed in teenagers with aldosterone deficiency when sodium balance was normalized.
- PRA, 17-OHP, and androgens were sensitive indicators of therapy adequacy.
Conclusions:
- Adequate sodium balance is essential for normal linear growth in children with aldosterone deficiency.
- Restoring sodium balance is critical for achieving normal pubertal development.
- Mineralocorticoid therapy, guided by PRA, is vital for optimizing growth and hormonal control in these patients.
Abstract:
The effect of normalization of sodium balance was evaluated in children with aldosterone deficiency of several etiologies. In salt-losing congenital adrenal hyperplasia (CAH), treatment with a mineralocorticoid in doses that normalized plasma renin activity (PRA) induced a marked increase in linear growth. Serum 17-hydroxyprogesterone (17-OHP) and androgens fell further when adequate sodium balance was achieved, allowing in some cases a reduction in glucocorticoid replacement dose. Together with PRA measurement they were the most sensitive indicators of adequate mineralocorticoid and glucocorticoid replacement therapy. In 2 teenage children with aldosterone deficiency due to Addison's and autoimmune polyglandular disease similar improvement in growth as well as onset of puberty occurred when sodium balance was normalized by increased mineralocorticoid therapy. These studies show that adequate sodium balance is essential for normal growth and pubertal development.