Gastrointestinal Tract - Postnatal: Difference between revisions

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==Introduction==
==Introduction==
This page is an introduction to postnatal gastrointestinal tract development. This nutritionally involves a change from prenatal placental vascular nutrition to postnatal oral colostrum/milk enteral nutrition (enteral = nutritient delivery as fluid into the gastrointestinal tract). Also look at the topic of Milk in relationship to neonatal nutrition. The postnatal gastrointestinal tract development is also about increased activity of the tract and associated organs as well as the populating with intestinal flora in the tract.   
This page is an introduction to postnatal gastrointestinal tract development. This nutritionally involves a change from prenatal placental vascular nutrition to postnatal oral colostrum/milk enteral nutrition (enteral = nutritient delivery as fluid into the gastrointestinal tract). Also look at the topic of Milk in relationship to neonatal nutrition. The postnatal gastrointestinal tract development is also about increased activity of the tract and associated organs as well as the populating with intestinal flora in the tract.  This is also the pathway for initial passive immunity through absorption of maternal immunoglobulin from breast milk.


These notes should be read in conjunction with the related page on [[Normal Development - Milk|Milk]] and an understanding of prenatal [[Gastrointestinal Tract Development]].
These notes should be read in conjunction with the related page on [[Normal Development - Milk|Milk]] and an understanding of prenatal [[Gastrointestinal Tract Development]].

Revision as of 15:32, 2 May 2011

Introduction

This page is an introduction to postnatal gastrointestinal tract development. This nutritionally involves a change from prenatal placental vascular nutrition to postnatal oral colostrum/milk enteral nutrition (enteral = nutritient delivery as fluid into the gastrointestinal tract). Also look at the topic of Milk in relationship to neonatal nutrition. The postnatal gastrointestinal tract development is also about increased activity of the tract and associated organs as well as the populating with intestinal flora in the tract. This is also the pathway for initial passive immunity through absorption of maternal immunoglobulin from breast milk.

These notes should be read in conjunction with the related page on Milk and an understanding of prenatal Gastrointestinal Tract Development.

Some Recent Findings

Lipid Signalling

Lipids present in the intestine leads to a reduction in nutrient intake. Recent research has shown that lipids present in the intestine can also regulate endogenous nutrient production.[2]

Signalling pathway:

presence of ingested lipids

intestinal lipid sensors

signal to the brain

liver

reduction in endogenous glucose production

Insulin-like Growth Factors

Some evidence to suggest that in preterm infants IGFBP-2 and IGF-II present in breast milk may have an important role in their early development.

  • insulin-like growth factors (IGFs) and IGF binding proteins (IGFBPs)

References

  1. <pubmed></pubmed>
  2. <pubmed>18401341</pubmed>


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Cite this page: Hill, M.A. (2024, March 29) Embryology Gastrointestinal Tract - Postnatal. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Gastrointestinal_Tract_-_Postnatal

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G