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Author Spotlight: Studying the Impact of Maternal Dietary Deficiencies on Long-Term Offspring Health Outcomes
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High Fructose Intake During Pregnancy in Rats Influences the Maternal Microbiome and Gut Development in the

Stuart Astbury1,2,3,4, Aleida Song1, Mi Zhou5

  • 1Division of Human Nutrition, Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada.

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Maternal fructose intake alters the gut microbiome during pregnancy, potentially harming infant gut development and increasing susceptibility to inflammation. This study highlights risks associated with dietary fructose during gestation.

Keywords:
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Area of Science:

  • Microbiology
  • Reproductive Biology
  • Nutritional Science

Background:

  • Maternal microbiome shifts during pregnancy to support mother and fetus.
  • Disruption of maternal microbiota around birth can impair infant gut colonization.
  • Impaired infant gut development may lead to inflammation and reduced barrier function.

Purpose of the Study:

  • To investigate the impact of maternal fructose intake on the maternal microbiome during pregnancy.
  • To assess the effects of maternal fructose supplementation on offspring development and gut health.

Main Methods:

  • Wistar rat dams received 10% fructose in drinking water from 8 weeks through pregnancy.
  • Maternal fecal and blood samples collected pre-mating and during early/late pregnancy.
  • Offspring gut barrier function markers, insulin response, birth weight, and fat mass analyzed.

Main Results:

  • Maternal fructose supplementation significantly altered the maternal microbiome, reducing *Lactobacillus* and *Bacteroides*.
  • Offspring exhibited reduced gene expression for gut barrier function markers.
  • Offspring showed an exacerbated insulin response, reduced birth weight, and increased fat mass.

Conclusions:

  • Dietary fructose supplementation modulates the maternal microbiome.
  • These changes may adversely affect fetal growth and development.
  • Maternal fructose intake could negatively impact offspring's later gut development and metabolic health.