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Taurine in developing brain, liver and muscle in infants
J Ghisolfi1, V B Nguyen, J P Thouvenot
1Groupe d'Etudes en Nutrition Infantile, CHR Purpan, Toulouse, France.
Biology of the Neonate
|January 1, 1989
Summary
Fetal tissue taurine storage was evaluated in newborns. Taurine levels in muscle and liver decreased with longer gestation, indicating significant fetal accumulation during the last trimester.
Area of Science:
- Biochemistry
- Neonatal Physiology
- Developmental Biology
Background:
- Taurine is an essential amino acid crucial for neonatal development.
- Understanding fetal taurine accumulation is vital for assessing nutritional status during pregnancy.
Purpose of the Study:
- To quantify tissue taurine concentrations in neonates.
- To evaluate the relationship between gestational duration and taurine storage.
- To estimate fetal taurine accumulation rates.
Main Methods:
- Autopsy samples of skeletal muscle, brain, and liver were collected from 41 neonates (1-10 days old).
- Taurine concentrations were determined using gas chromatography.
- Gestational age ranged from 24 to 41 weeks.
Main Results:
- Muscle and liver taurine concentrations showed a decrease with increasing gestational duration.
- No correlation was found between birth weight and tissue taurine levels for a given gestation.
- Estimated fetal taurine accumulation is 35-40 mumol/24 h in the last trimester.
Conclusions:
- Fetal tissue taurine storage is significantly influenced by gestational duration.
- The last trimester is a critical period for substantial fetal taurine accumulation.
- These findings provide insights into neonatal taurine requirements and maternal-fetal transfer.