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Sudden neonatal death in carnitine transporter deficiency
P Rinaldo1, C A Stanley, B Y Hsu
1Department of Genetics, Yale University School of Medicine, New Haven, Connecticut 06520-8005, USA.
The Journal of Pediatrics
|August 1, 1997
Summary
Carnitine transporter deficiency can cause sudden infant death, even in breastfed infants. Maternal diet and fasting stress may trigger this rare genetic disorder in newborns.
Area of Science:
- Biochemistry
- Genetics
- Neonatology
Background:
- Carnitine transporter deficiency (CTD) is a rare inherited metabolic disorder affecting fatty acid oxidation.
- It impairs the transport of carnitine into cells, leading to energy deficits, particularly during fasting states.
Observation:
- A 5-day-old neonate experienced sudden, unexpected death.
- Postmortem investigations suggested a potential diagnosis of carnitine transporter deficiency.
- Genetic analysis confirmed both parents were heterozygotes for the CTD mutation.
Findings:
- The infant's death was likely precipitated by metabolic stress from insufficient feeding (poor breastfeeding without formula supplementation).
- The mother's vegetarian diet may have contributed to the carnitine deficiency.
- This case represents a previously undescribed presentation of neonatal death in carnitine transporter deficiency.
Implications:
- Highlights the critical role of timely diagnosis and management of CTD in neonates.
- Emphasizes the potential impact of maternal diet and infant feeding practices on metabolic health in infants with genetic predispositions.
- Suggests that fasting and dietary factors can precipitate severe outcomes in CTD, even with breastfeeding.