Book contents
- Frontmatter
- Contents
- List of contributors
- Preface
- Acknowledgments
- List of abbreviations
- 1 Fetal nutrition
- 2 Determinants of intrauterine growth
- 3 Aspects of fetoplacental nutrition in intrauterine growth restriction and macrosomia
- 4 Postnatal growth in preterm infants
- 5 Thermal regulation and effects on nutrient substrate metabolism
- 6 Development and physiology of the gastrointestinal tract
- 7 Metabolic programming as a consequence of the nutritional environment during fetal and the immediate postnatal periods
- 8 Nutrient regulation in brain development: glucose and alternate fuels
- 9 Water and electrolyte balance in newborn infants
- 10 Amino acid metabolism and protein accretion
- 11 Carbohydrate metabolism and glycogen accretion
- 12 Energy requirements and protein-energy metabolism and balance in preterm and term infants
- 13 The role of essential fatty acids in development
- 14 Vitamins
- 15 Normal bone and mineral physiology and metabolism
- 16 Disorders of mineral, vitamin D and bone homeostasis
- 17 Trace minerals
- 18 Iron
- 19 Conditionally essential nutrients: choline, inositol, taurine, arginine, glutamine and nucleotides
- 20 Intravenous feeding
- 21 Enteral amino acid and protein digestion, absorption, and metabolism
- 22 Enteral carbohydrate assimilation
- 23 Enteral lipid digestion and absorption
- 24 Minimal enteral nutrition
- 25 Milk secretion and composition
- 26 Rationale for breastfeeding
- 27 Fortified human milk for premature infants
- 28 Formulas for preterm and term infants
- 29 Differences between metabolism and feeding of preterm and term infants
- 30 Gastrointestinal reflux
- 31 Hypo- and hyperglycemia and other carbohydrate metabolism disorders
- 32 The infant of the diabetic mother
- 33 Neonatal necrotizing enterocolitis: clinical observations and pathophysiology
- 34 Neonatal short bowel syndrome
- 35 Acute respiratory failure
- 36 Nutrition for premature infants with bronchopulmonary dysplasia
- 37 Nutrition in infants with congenital heart disease
- 38 Nutrition therapies for inborn errors of metabolism
- 39 Nutrition in the neonatal surgical patient
- 40 Nutritional assessment of the neonate
- 41 Methods of measuring body composition
- 42 Methods of measuring energy balance: calorimetry and doubly labelled water
- 43 Methods of measuring nutrient substrate utilization using stable isotopes
- 44 Postnatal nutritional influences on subsequent health
- 45 Growth outcomes of preterm and very low birth weight infants
- 46 Post-hospital nutrition of the preterm infant
- Index
- References
16 - Disorders of mineral, vitamin D and bone homeostasis
Published online by Cambridge University Press: 10 December 2009
- Frontmatter
- Contents
- List of contributors
- Preface
- Acknowledgments
- List of abbreviations
- 1 Fetal nutrition
- 2 Determinants of intrauterine growth
- 3 Aspects of fetoplacental nutrition in intrauterine growth restriction and macrosomia
- 4 Postnatal growth in preterm infants
- 5 Thermal regulation and effects on nutrient substrate metabolism
- 6 Development and physiology of the gastrointestinal tract
- 7 Metabolic programming as a consequence of the nutritional environment during fetal and the immediate postnatal periods
- 8 Nutrient regulation in brain development: glucose and alternate fuels
- 9 Water and electrolyte balance in newborn infants
- 10 Amino acid metabolism and protein accretion
- 11 Carbohydrate metabolism and glycogen accretion
- 12 Energy requirements and protein-energy metabolism and balance in preterm and term infants
- 13 The role of essential fatty acids in development
- 14 Vitamins
- 15 Normal bone and mineral physiology and metabolism
- 16 Disorders of mineral, vitamin D and bone homeostasis
- 17 Trace minerals
- 18 Iron
- 19 Conditionally essential nutrients: choline, inositol, taurine, arginine, glutamine and nucleotides
- 20 Intravenous feeding
- 21 Enteral amino acid and protein digestion, absorption, and metabolism
- 22 Enteral carbohydrate assimilation
- 23 Enteral lipid digestion and absorption
- 24 Minimal enteral nutrition
- 25 Milk secretion and composition
- 26 Rationale for breastfeeding
- 27 Fortified human milk for premature infants
- 28 Formulas for preterm and term infants
- 29 Differences between metabolism and feeding of preterm and term infants
- 30 Gastrointestinal reflux
- 31 Hypo- and hyperglycemia and other carbohydrate metabolism disorders
- 32 The infant of the diabetic mother
- 33 Neonatal necrotizing enterocolitis: clinical observations and pathophysiology
- 34 Neonatal short bowel syndrome
- 35 Acute respiratory failure
- 36 Nutrition for premature infants with bronchopulmonary dysplasia
- 37 Nutrition in infants with congenital heart disease
- 38 Nutrition therapies for inborn errors of metabolism
- 39 Nutrition in the neonatal surgical patient
- 40 Nutritional assessment of the neonate
- 41 Methods of measuring body composition
- 42 Methods of measuring energy balance: calorimetry and doubly labelled water
- 43 Methods of measuring nutrient substrate utilization using stable isotopes
- 44 Postnatal nutritional influences on subsequent health
- 45 Growth outcomes of preterm and very low birth weight infants
- 46 Post-hospital nutrition of the preterm infant
- Index
- References
Summary
Disorders of mineral homeostasis
Fetal mineral homeostasis is closely linked to that of the mother. In the pregnant woman and the fetus there is an intimate and delicate relationship amongst the calciotropic hormones, growth factors, and the minerals Ca, P, and Mg. Any perturbation of maternal or placental homeostatic mineral balance may affect that of the fetus and may have metabolic sequelae in the fetus manifesting in the neonatal period and infancy.
Disorders of calcium homeostasis
A wide variety of factors can cause significant disturbances in calcium and bone homeostasis in the fetus and neonate.
Maternal hypocalcemia
Maternal hypocalcemia results in fetal hypocalcemia, which stimulates the fetal parathyroid glands to synthesize and secrete more parathyroid hormone (PTH to achieve normocalcemia. PTH does not appear to cross the placenta in either direction. Causes of maternal hypocalcemia are listed in Table 16.1. Impaired secretion of PTH because of hypoparathyroidism or magnesium depletion and resistance to PTH because of mutant receptors, as in pseudohypoparathyroidism, result in maternal hypocalcemia. Hypocalcemia may also be a manifesting feature of abnormal vitamin D deficiency; in particular, maternal vitamin D deficiency may be caused by insufficient sunlight exposure, inadequate dietary intake, or malabsorption. Maternal liver disease may be associated with defective 25-hydroxylase activity resulting in low serum 25-hydroxyvitamin D (25-OHD) concentration, hypocalcemia, and rickets.
Defective 1 alpha-hydroxylase activity may be caused by renal or parathyroid gland diseases.
- Type
- Chapter
- Information
- Neonatal Nutrition and Metabolism , pp. 229 - 272Publisher: Cambridge University PressPrint publication year: 2006