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Bone metabolism in children with epidermolysis bullosa
M Loreto Reyes1, Andreina Cattani, Hector Gajardo
1Pediatrics Department, Endocrine Unit, Pontificia Universidad Católica de Chile, Instituto de Nutrición y Tecnología en Alimentos, Santiago, Chile.
Insights
Children with epidermolysis bullosa (EB) often experience low bone mineral density and vitamin D deficiency. Severe EB cases warrant bone metabolism assessment to detect conditions like osteopenia and hyperparathyroidism.
Area of Science:
- Pediatric Endocrinology
- Bone Metabolism Research
- Dermatology
Background:
- Epidermolysis Bullosa (EB) is a rare genetic disorder characterized by fragile skin.
- Complications of severe EB can include systemic issues affecting bone health.
- Nutritional deficiencies and impaired calcium absorption are potential concerns in EB patients.
Purpose of the Study:
- To assess bone mineral density (BMD) in children with epidermolysis bullosa (EB).
- To evaluate vitamin D status and biochemical markers of bone turnover in pediatric EB patients.
- To determine the prevalence of osteopenia and hyperparathyroidism in this cohort.
Main Methods:
- Cross-sectional study involving seven children diagnosed with epidermolysis bullosa.
- Measurement of bone mineral density using Z-scores.
- Assessment of serum 25(OH) vitamin D levels.
- Analysis of biochemical markers related to bone turnover and parathyroid function.
Main Results:
- Four out of seven children exhibited osteopenia, defined as a Z-score of -1.5 or lower.
- Four children presented with low 25(OH) vitamin D levels (<34 nmol/L).
- Two children with vitamin D deficiency also showed signs of hyperparathyroidism.
Conclusions:
- Children with severe epidermolysis bullosa are at significant risk for impaired bone metabolism.
- Routine evaluation of bone mineral density and vitamin D status is recommended for pediatric EB patients.
- Early detection and management of bone abnormalities are crucial in managing severe EB.
Abstract:
We evaluated bone mineral density, vitamin D status, and biochemical markers of bone turnover in seven children with epidermolysis bullosa (EB). Four had osteopenia (Z score, -1.5) and four 25(OH) vitamin D <34 nmol/L (14 ng/mL), two of which had hyperparathyroidism. Children with severe EB should have evaluation of bone metabolism.