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In order to evaluate whether changes of adrenal steroid serum levels occurring during the prepubertal period influence the degree of osteopenia, dehydroepiandrosterone sulfate (DHEAS) was longitudinally monitored as marker of the onset of adrenarche. Fifteen thalassemic patients, 9 girls (Group 1) and 6 boys (Group 2), with chronological age (CA) from 6.1 to 10.3 years and bone age (BA) from 6 to 9.6 years, were studied. Two observations, 14 months apart, were made. All patients had no pubertal signs according to Tanner during the period of observation, and auxological data (height, BMI and height velocity) were evaluated in respect to bone age. There was a statistically significant difference between the two groups for serum DHEAS, BGP serum levels, height velocity and bone mineral density expressed as standard deviation score (BMDsds) in respect to both bone age and height age (the latter was calculated in order to eliminate the influence of height on BMD). Alterations of bone metabolism were excluded by determination of calcium, phosphorus, alkaline phosphatase activity, parathormone, 25-OH-D3, IGF-I serum levels, all these values being normal. In conclusion, our data show that a delayed adrenarche occurs in thalassemic boys which is correlated with a severe degree of osteopenia, even though the relationship between them is not yet established.

Can Adrenarche Influence the Degree of Osteopenia in Thalassemic Children?