Arginine Synthesis in the Human Neonatal Small Intestine
Author Information
Author(s): Köhler Eleonore S, Sankaranarayanan Selvakumari, van Ginneken Christa J, van Dijk Paul, Vermeulen Jacqueline LM, Ruijter Jan M, Lamers Wouter H, Bruder Elisabeth
Primary Institution: Maastricht University
Hypothesis
Does the neonatal human small intestine express the enzymes necessary for arginine synthesis from proline and/or glutamine?
Conclusion
The human small intestine can produce arginine well before fetuses are viable outside the uterus.
Supporting Evidence
- Milk contains too little arginine for normal growth, but its precursors proline and glutamine are abundant.
- The small intestine of rodents and piglets produces arginine from proline during the suckling period.
- Premature human neonates frequently suffer from hypoargininemia, indicating a need for arginine synthesis.
- Enteral ASS behaves as a typical suckling enzyme, disappearing in the weaning period of human infants.
Takeaway
Babies' intestines can make arginine, an important nutrient, from other building blocks even before they are born.
Methodology
The study analyzed 89 small-intestinal specimens using immunohistochemistry to visualize enzyme expression.
Limitations
The samples were anonymized, and the study focused on specific gastrointestinal conditions.
Participant Demographics
Samples included fetuses and infants up to 8 years old, with various gastrointestinal conditions.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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