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Lipid digestion and absorption in early life: an update.
Umeå University, Faculty of Medicine, Department of Clinical Sciences, Paediatrics.
Umeå University, Faculty of Medicine, Department of Clinical Sciences, Paediatrics.
2010 (English)In: Current opinion in clinical nutrition and metabolic care, ISSN 1363-1950, E-ISSN 1473-6519, Vol. 13, no 3, 314-20 p.Article in journal (Refereed) Published
Abstract [en]

PURPOSE OF REVIEW: To highlight our understanding of digestion and absorption of dietary lipids in newborn infants, and specifically how these processes differ from those in children and adults. RECENT FINDINGS: The intestinal concentration of pancreatic triglyceride lipase (PTL) and bile salts is lower in newborns compared to later in life. Instead the PTL-related protein 2 and bile salt-stimulated lipase (BSSL) are the key enzymes secreted from pancreas, which in concerted action with gastric lipase operate to achieve efficient fat absorption during infancy. BSSL is also present in human milk which affects fat absorption and growth in breast-fed preterm infants. Under conditions of low luminal bile salt concentrations fat absorption is likely to occur from liquid crystalline product phases, which may result in absorption from an extended part of the small intestinal mucosal surfaces compared to adults. Chylomicron assembly and secretion also seem to adapt to the specific situation of the newborn. SUMMARY: Both fat digestion and product absorption are different in newborn infants compared to adults; other lipases are used for digestion and different physical-chemical phases may be used for product absorption. Why these differences occur is still an unsolved question of considerable importance to neonatal nutrition.

Place, publisher, year, edition, pages
2010. Vol. 13, no 3, 314-20 p.
Keyword [en]
human milk, lipases, lipid absorption, neonatology, nutrition
National Category
Pediatrics
Identifiers
URN: urn:nbn:se:umu:diva-35025DOI: 10.1097/MCO.0b013e328337bbf0ISI: 000277281500016PubMedID: 20179589OAI: oai:DiVA.org:umu-35025DiVA: diva2:328332
Available from: 2010-07-02 Created: 2010-07-02 Last updated: 2017-12-12Bibliographically approved

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CiteExportLink to record
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