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Adrenal steroidogenic defects in children with precocious pubarche
P del Balzo1, P Borrelli, P Cambiaso
1Department of Endocrinology, Bambino Gesú Children's Hospital, IRCCS, Rome, Italy.
Hormone Research
|January 1, 1992
Summary
Nonclassical congenital adrenal hyperplasia (NCAH) may occur in children with precocious pubarche (PP). ACTH testing is recommended for these children to identify mild adrenal enzymatic defects.
Area of Science:
- Pediatric Endocrinology
- Adrenal Disorders
- Genetics
Background:
- Precocious pubarche (PP) in children raises questions about underlying adrenal conditions.
- Nonclassical congenital adrenal hyperplasia (NCAH) is a debated cause of PP.
- Evaluating adrenal steroid response to ACTH is crucial for diagnosis.
Purpose of the Study:
- To investigate the adrenal steroid response to ACTH in children with precocious pubarche.
- To determine the prevalence of nonclassical congenital adrenal hyperplasia in this cohort.
- To assess the utility of ACTH stimulation testing in diagnosing adrenal disorders in PP.
Main Methods:
- Studied 26 Italian children (0.45–8.8 years) with precocious pubarche (PP) without virilization.
- Administered ACTH (Synacthen) stimulation test (0.25 mg i.v. bolus).
- Compared results with prepubertal and early pubertal control groups.
Main Results:
- Two patients (7.7%) were diagnosed with NCAH (21-hydroxylase and 3 beta-hydroxysteroid-dehydrogenase deficiencies).
- Idiopathic PP group showed elevated adrenal androgens compared to prepubertal controls.
- Adrenal androgen levels in idiopathic PP were similar to early pubertal controls.
Conclusions:
- Mild adrenal enzymatic defects, indicative of NCAH, can occur in children with precocious pubarche.
- ACTH stimulation testing is a valuable tool for identifying these subtle adrenal abnormalities.
- This supports the recommendation for ACTH testing in children presenting with precocious pubarche.