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Related Experiment Videos

[Parathyroid hormone: perinatal aspects].

M E Martínez1, C Sánchez, G Balaguer

  • 1Servicios de Bioquímica y Neonatologia, Hospital La Paz, Madrid.

Anales Espanoles De Pediatria
|February 1, 1988
PubMed
Summary

Parathormone (PTH) levels in mothers and newborns were measured. Newborns showed increased PTH and decreased calcium levels post-birth, suggesting placental transfer may influence fetal parathormone.

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Area of Science:

  • Endocrinology
  • Neonatal Physiology

Context:

  • Maternal and neonatal endocrine status are crucial for healthy pregnancy and birth outcomes.
  • Parathormone (PTH) plays a key role in calcium homeostasis, but its dynamics during pregnancy and early neonatal life require further elucidation.

Purpose:

  • To investigate parathormone (PTH) levels in mothers at delivery, their newborns shortly after birth, and umbilical cord blood.
  • To explore the relationship between maternal, umbilical, and neonatal PTH levels and their correlation with calcium levels.

Summary:

  • PTH levels in pregnant women were comparable to non-pregnant controls. Umbilical artery PTH was higher than umbilical vein PTH, but both were lower than maternal or neonatal levels.
  • Newborns at 40-50 hours postpartum exhibited elevated PTH levels and a concurrent decrease in calcium, indicating neonatal hypocalcemia.

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  • A positive correlation was observed between maternal and umbilical PTH levels, and between neonatal PTH and umbilical vessel PTH levels, suggesting potential placental transfer of PTH.

    • Impact:

    • Findings indicate that newborns experience a physiological increase in PTH and a decrease in calcium levels within the first 50 hours of life.
    • The study suggests a possible placental transfer of parathormone from mother to fetus.
    • This research contributes to understanding neonatal calcium-phosphate metabolism and endocrine adaptation post-birth.