Cited by 1,576Gut microbiota and healthOral microbiology and periodontitis researchAdipokines, Inflammation, and Metabolic Diseases

High-Fat Diet Determines the Composition of the Murine Gut Microbiome Independently of Obesity

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Hildebrandt, Marie A., Hoffmann, Christian, Sherrill–Mix, Scott A., Keilbaugh, Sue A., Hamady, Micah, Chen, Ying–Yu, Knight, Rob, Ahima, Rexford S. +2 more·2009·Gastroenterology

Abstract

Background & aims The composition of the gut microbiome is affected by host phenotype, genotype, immune function, and diet. Here, we used the phenotype of RELMbeta knockout (KO) mice to assess the influence of these factors.Methods Both wild-type and RELMbeta KO mice were lean on a standard chow diet, but, upon switching to a high-fat diet, wild-type mice became obese, whereas RELMbeta KO mice remained comparatively lean. To investigate the influence of diet, genotype, and obesity on microbiome composition, we used deep sequencing to characterize 25,790 16S rDNA sequences from uncultured bacterial communities from both genotypes on both diets.Results We found large alterations associated with switching to the high-fat diet, including a decrease in Bacteroidetes and an increase in both Firmicutes and Proteobacteria. This was seen for both genotypes (ie, in the presence and absence of obesity), indicating that the high-fat diet itself, and not the obese state, mainly accounted for the observed changes in the gut microbiota. The RELMbeta genotype also modestly influenced microbiome composition independently of diet. Metagenomic analysis of 537,604 sequence reads documented extensive changes in gene content because of a high-fat diet, including an increase in transporters and 2-component sensor responders as well as a general decrease in metabolic genes. Unexpectedly, we found a substantial amount of murine DNA in our samples that increased in proportion on a high-fat diet.Conclusions These results demonstrate the importance of diet as a determinant of gut microbiome composition and suggest the need to control for dietary variation when evaluating the composition of the human gut microbiome.

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Crossref · 10.1053/j.gastro.2009.08.042

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  • Administration of a high-fat diet to healthy subjects caused a decrease in Bacteroidetes levels with an increase in both Firmicutes and Proteobacteria levels of gut microbiota.

    “administration of an HFD to healthy subjects caused a decrease in Bacteroidetes levels with an increase in both Firmicutes and Proteobacteria levels of gut microbiota (Hildebrandt et al., 2009;Zhang et al., 2012a).”

    From The Microbiota-Gut-Brain Axis (2019) · cites this paper as Hildebrandt et al., 2009

    The Results section ('Metagenomic analysis of gut bacterial populations from mice on standard chow or high fat diets'; page not provided) reports increased Proteobacteria and Firmicutes and decreased Bacteroidetes after a switch to a high-fat diet. The study examined mice, however, so it does not establish this effect in human subjects if 'healthy subjects' refers to people. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Animal models fed a high-fat diet demonstrated an alteration in gut microbiota profile with a reduction in Bacteroidetes levels and an increase in both Proteobacteria and Firmicutes levels.

    “animal models fed an HFD demonstrated an alteration in their gut microbiota profile with a reduction in Bacteroidetes levels and an increase in both Proteobacteria and Firmicute levels (Hildebrandt et al., 2009).”

    From The Microbiota-Gut-Brain Axis (2019) · cites this paper as Hildebrandt et al., 2009

  • A diet high in protein and fat (with reduced carbohydrates) has been previously associated with an increase in Firmicutes to Bacteriodetes ratio in mice.

    “Those with cystic fibrosis are recommended to consume a diet high in protein and fat (and therefore a comparative reduction in carbohydrates) which has been previously associated with an increase in Firmicutes to Bacteriodetes ratio in mice [96], though dietary data was not collected within the cystic fibrosis study [95].”
  • These high-fat diet-induced microbiota changes were observed in mice resistant to weight gain, implying a direct effect of dietary lipids on the microbiota.

    “These changes were observed in mice resistant to weight gain, implying a direct effect of dietary lipids on the microbiota (26, 27).”
  • Experimental mice fed a high-fat diet (40 to 80% total caloric intake) exhibit decreases in Bacteroidetes and increases in Firmicutes and Proteobacteria.

    “Experimental mice fed a high-fat diet (40 to 80% total caloric intake) exhibit decreases at the phyla-level in Bacteroidetes and increases in Firmicutes and Proteobacteria.”

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Authors
Hildebrandt, M. A., Hoffmann, C., Sherrill–Mix, S. A., Keilbaugh, S. A., Hamady, M., Chen, Y., Knight, R., Ahima, R. S., Bushman, F., & Wu, G. D.
Affiliations
  • University of Pennsylvania (US)
  • University of Colorado Boulder (US)
Corresponding author
  • Bushman, Frederic
  • Wu, Gary D.
Venue
Gastroenterology
Publisher
Elsevier BV
Published
2009-11
Volume
137
Issue
5
Pages
1716-1724.e2
ISSN
0016-5085 (ISSN-L)
OpenAlex
W2158630697
Cited by
1,576
References
43
Citations by year
2026: 40 · 2025: 61 · 2024: 96 · 2023: 76 · 2022: 130 · 2021: 117 · 2020: 158 · 2019: 148 · 2018: 115 · 2017: 94 · 2016: 104 · 2015: 96 · 2014: 87 · 2013: 82 · 2012: 71
FWCI
22.84
Type
journal article
Language
en
Open access
Locations
  • Gastroenterology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • University of Pennsylvania
  • National Institutes of Health
  • National Human Genome Research Institute (R01HG004872, HG004872)
  • National Institute of General Medical Sciences (T32GM065103)
  • National Institute of Allergy and Infectious Diseases (R01AI039368, AI39368)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK-50306, DK078669, P01DK078669, DK-019525, DK062348, R01DK062348, R56DK062348, P30DK019525, P30DK050306)
  • National Center for Research Resources (S10RR024525)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Dentistry › Periodontics › Oral microbiology and periodontitis research
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
Keywords
gut microbiota, high-fat diet, obesity, diet-induced obesity, Bacteroidetes, Firmicutes, Proteobacteria, gut microbiota composition, metagenomics, microbial gene content, 16S rRNA gene sequencing
MeSH terms
Animals, Diet, Dietary Fats, Female, Hormones, Ectopic, Intestines, Mice, Inbred C57BL, Obesity, RNA, Ribosomal, 16S, Mice, Knockout, Intercellular Signaling Peptides and Proteins, Mice, Metagenome

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