European Journal of Nutrition

, Volume 48, Issue 8, pp 457–464

Effects of galacto-oligosaccharide ingestion on the mucosa-associated mucins and sucrase activity in the small intestine of mice

  • Géraldine Leforestier
  • Anne Blais
  • François Blachier
  • Agnès Marsset-Baglieri
  • Anne-Marie Davila-Gay
  • Emmanuel Perrin
  • Daniel Tomé
Original Contribution

DOI: 10.1007/s00394-009-0036-8

Cite this article as:
Leforestier, G., Blais, A., Blachier, F. et al. Eur J Nutr (2009) 48: 457. doi:10.1007/s00394-009-0036-8

Abstract

Background

Galacto-oligosaccharides (GOS) are non-digestible oligosaccharides with short galactosyl chain units produced by lactose fermentation which are considered as prebiotics. Only few studies have investigated the effects of GOS medium-term ingestion on the small intestinal epithelium characteristics.

Aim of the study

In this study, we evaluated the consequences of GOS ingestion on small intestinal mucosal morphology, on brush-border membrane enzyme activities and on mucin content in BALB/c mice.

Methods

Mice received the experimental diets for 4 weeks and then the small intestine was collected to measure sucrase, lactase and alkaline phosphatase activities, to study the villus heights in the jejunum mucosa and to determine mucosal mucin content as well as MUC-2 and MUC-4 mRNAs expression by qRT-PCR.

Results

Our results showed that GOS has no detectable effect on the intestine villus height but increased the total protein content by twofold. Sucrase activity was significantly increased in the intestinal mucosa recovered from animals fed the GOS diet without any detectable modification of lactase and phosphatase activities. Interestingly, GOS was also able to increase sucrase activity in cultured Caco-2 cells raising the view that they likely act directly on these cells. Furthermore, GOS was found to markedly increase O-linked glycoproteins associated with the intestinal mucosa without modifying MUC-2, MUC-4 mRNAs expression. Lastly, TNF-α mRNA expression was also not modified after GOS ingestion.

Conclusions

These results suggest that, in BALB/c mice, 4-week GOS ingestion is able to increase the small intestinal mucosa-associated mucin content and enterocyte-associated sucrase activity without modifying villus height.

Keywords

Galacto-oligosaccharides Intestinal mucosa MUC genes Mucins 

Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Géraldine Leforestier
    • 1
    • 2
  • Anne Blais
    • 1
    • 2
  • François Blachier
    • 1
    • 2
  • Agnès Marsset-Baglieri
    • 1
    • 2
  • Anne-Marie Davila-Gay
    • 1
    • 2
  • Emmanuel Perrin
    • 3
  • Daniel Tomé
    • 1
    • 2
  1. 1.INRA, CRNH-IdF, UMR914 Nutrition Physiology and Ingestive BehaviorParisFrance
  2. 2.AgroParisTech, CRNH-IdF, UMR914 Nutrition Physiology and Ingestive BehaviorParisFrance
  3. 3.Blédina R & DSteenvoordeFrance

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