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[Osteoporosis in pregnancy and lactation]
1Servicio de Endocrinología, Metabolismo y Medicina Nuclear, Hospital Italiano de Buenos Aires, Gascón 450, 1181 Buenos Aires, Argentina. jarbelbios@intramed.net.ar
Medicina
|July 5, 2001
Summary
Pregnancy and lactation trigger metabolic changes to support fetal development and protect maternal bones. While bone mass is usually maintained, prolonged lactation can cause temporary bone loss, with rare osteoporosis cases linked to these periods.
Area of Science:
- Reproductive endocrinology and mineral metabolism.
Context:
- Pregnancy and lactation necessitate significant maternal physiological adaptations.
- These adaptations ensure nutrient transfer to the fetus and maintain maternal skeletal integrity.
Purpose:
- To elucidate the complex metabolic and hormonal responses during pregnancy and lactation.
- To understand the mechanisms protecting the maternal skeleton and supporting fetal development.
Summary:
- Elevated 1,25-dihydroxy vitamin D enhances calcium absorption.
- PTH-related peptide contributes to functional hyperparathyroidism, maintaining fetal calcium supply.
- Lactation increases bone turnover and reduces urinary calcium loss, mobilizing minerals for milk, with potential temporary bone mass reduction.
Impact:
- Provides insights into the hormonal regulation of calcium and bone metabolism during reproduction.
- Highlights the transient nature of bone mass changes with lactation cessation.
- Informs understanding of rare osteoporosis associations with pregnancy and lactation.