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Neonatal rickets. Histopathology and quantitative bone changes

S J Oppenheimer, G J Snodgrass

    Archives of Disease in Childhood
    |December 1, 1980
    PubMed
    Summary
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    Histological examination of preterm infant ribs revealed osteomalacia and pronounced osteoporosis. These findings in neonatal rickets differ from vitamin D deficiency, suggesting unique bone pathologies in infants receiving prolonged intravenous feeding.

    Area of Science:

    • Pediatric Pathology
    • Nutritional Biochemistry
    • Skeletal Biology

    Background:

    • Investigating bone health in preterm infants receiving prolonged intravenous feeding and mechanical ventilation.
    • Assessing histological changes in rib bone, specifically osteomalacia and osteoporosis.

    Observation:

    • Rib samples from three preterm infants were analyzed using histological and grid counting techniques.
    • Osteomalacia was present in all cases, though less severe than in vitamin D-deficient controls.
    • Pronounced osteoporosis was observed, a feature not seen in vitamin D-deficient controls.

    Findings:

    • Histological findings in preterm infants resemble experimental phosphate-deficient rickets and vitamin D-resistant rickets.
    • Neonatal rickets, characterized by pronounced osteoporosis, presents differently from classical vitamin D deficiency.

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  • The degree of osteomalacia was less pronounced compared to classical vitamin D deficiency.

    • Implications:

    • Prolonged intravenous feeding and ventilation in preterm infants may lead to distinct bone pathologies.
    • Understanding these specific rickets forms is crucial for appropriate clinical management and nutritional support.
    • Further research into the pathogenesis of these bone disorders in vulnerable infant populations is warranted.