Cited by 155Atherosclerosis and Cardiovascular DiseasesGut microbiota and healthCholesterol and Lipid Metabolism

Absence of Microbiota (Germ-Free Conditions) Accelerates the Atherosclerosis in ApoE-Deficient Mice Fed Standard Low Cholesterol Diet

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Stepankova, Renata, Tonar, Zbynek, Bartova, Jirina, Nedorost, Lukas, Rossman, Pavel, Poledne, Rudolf, Schwarzer, Martin, Tlaskalova-Hogenova, Helena·2010·Journal of Atherosclerosis and Thrombosis

Abstract

AIM: The aim of our work was to determine the influence of intestinal bacteria on the development of atherosclerotic lesions using apolipoprotein E (ApoE)-deficient knockout mice. METHODS: The experiments were performed on ApoE-/--deficient mouse strain C57BL/6, bred under germ-free (GF) conditions for two generations or under conventional conditions with defined microflora (CV). The mice were fed a standard low cholesterol diet or cholesterol-rich diet for 3-4 months. We studied the development of advanced lesions in the thoracic and abdominal aorta by histological, morphometric and immunohistological methods. RESULTS: Conventionally reared ApoE-/- mice (containing no pathogenic intestinal microbiota) and fed a standard low cholesterol diet in contrast to a high cholesterol diet did not develop atherosclerotic aortic plaques. In contrast, ApoE-/- mice reared under germfree conditions for 2 generations and fed a low cholesterol diet exhibited atherosclerotic plaques in the aorta. Characteristic lipid deposition with foam cells and macrophages was found in their arterial walls. CONCLUSION: In contrast to the absence of atherosclerotic plaques in conventionally reared ApoE-deficient mice, germ-free ApoE-/- mice consuming the same low cholesterol standard diet developed atherosclerotic plaques in the aorta. Differences in atherosclerotic plaques between GF and CV ApoE-/- mice are not so apparent when mice are fed a high cholesterol diet. Our findings thus document the protective effect of microbiota (commensal bacteria) on atherosclerosis development.

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  1. Saltzmann NH, de Jong H, Paterson Y, Harmsen HJM, Welling GW, Bos N: Analysis of 16S libraries of mouse gastrointestinal microflora reveals a large new group of mouse intestinal bacteria. Microbiology, 2002; 148: 3651- 3660

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Authors
Stepankova, R., Tonar, Z., Bartova, J., Nedorost, L., Rossman, P., Poledne, R., Schwarzer, M., & Tlaskalova-Hogenova, H.
Affiliations
  • Czech Academy of Sciences (CZ)
  • Institute of Clinical and Experimental Medicine (CZ)
Venue
Journal of Atherosclerosis and Thrombosis
Published
2010
Volume
17
Issue
8
Pages
796-804
ISSN
  • 1340-3478 (ISSN-L)
  • 1880-3873
OpenAlex
W1975467853
Cited by
155
References
46
Citations by year
2026: 4 · 2025: 6 · 2024: 8 · 2023: 7 · 2022: 21 · 2021: 10 · 2020: 19 · 2019: 17 · 2018: 8 · 2017: 10 · 2016: 14 · 2015: 13 · 2014: 5 · 2013: 4 · 2012: 4
FWCI
1.79
Type
journal article
Language
en
Open access
Licence
cc-by-nc-sa
Locations
  • Journal of Atherosclerosis and Thrombosis (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • ASEP (submittedVersion, public-domain)
Funders
Akademie Věd České Republiky (AV0Z 50200510)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Atherosclerosis and Cardiovascular Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
Keywords
gut microbiota, germ-free mice, atherosclerosis, apolipoprotein E deficiency, cholesterol-lowering diet, high-cholesterol diet, aortic plaque, foam cells, macrophages, commensal bacteria, atheroprotection
MeSH terms
Animals, Aorta, Abdominal, Aorta, Thoracic, Apolipoproteins E, Cholesterol, Cholesterol, Dietary, Disease Models, Animal, Female, Germ-Free Life, Intestinal Mucosa, Male, Mice, Inbred C57BL, RNA, Messenger, Blotting, Western, Mice, Knockout, Reverse Transcriptase Polymerase Chain Reaction, Atherosclerosis, Mice, Metagenome

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