Characterization of Bacteria, Clostridia and Bacteroides in Faeces of Vegetarians Using qPCR and PCR-DGGE Fingerprinting
Abstract
BACKGROUND/AIMS: This study aimed to investigate the quantitative and qualitative changes of bacteria, Bacteroides, Bifidobacterium and Clostridium cluster IV in faecal microbiota associated with a vegetarian diet. METHODS: Bacterial abundances were measured in faecal samples of 15 vegetarians and 14 omnivores using quantitative PCR. Diversity was assessed with PCR-DGGE fingerprinting, principal component analysis (PCA) and Shannon diversity index. RESULTS: Vegetarians had a 12% higher abundance of bacterial DNA than omnivores, a tendency for less Clostridium cluster IV (31.86 +/- 17.00%; 36.64 +/- 14.22%) and higher abundance of Bacteroides (23.93 +/- 10.35%; 21.26 +/- 8.05%), which were not significant due to high interindividual variations. PCA suggested a grouping of bacteria and members of Clostridium cluster IV. Two bands appeared significantly more frequently in omnivores than in vegetarians (p < 0.005 and p < 0.022). One was identified as Faecalibacterium sp. and the other was 97.9% similar to the uncultured gut bacteriumDQ793301. CONCLUSIONS: A vegetarian diet affects the intestinal microbiota, especially by decreasing the amount and changing the diversity of Clostridium cluster IV. It remains to be determined how these shifts might affect the host metabolism and disease risks.
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Characteristic patterns in the gut microbiota for plant-based diets include high bacterial richness, increased numbers of Bifidobacterium, Lactobacillus, Ruminococcus, Eubacterium rectale, Roseburia, Prevotella, F. prausnitzii, and Anaerostipes, but lower abundance of Clostridium sensu stricto, C. perfringens, C. histolyticum, and Odoribacter.
“Thus, characteristic patterns in the gut microbiota for these types of diets include high bacterial richness, increased numbers of Bifidobacterium, Lactobacillus, Ruminococcus, Eubacterium rectale, Roseburia, Prevotella, F. prausnitzii, and Anaerostipes, but lower abundance of Clostridium sensu stricto, C. perfringens, C. histolyticum, and Odoribacter (42,(45)(46)(47)(48)(49).”
From Diet and the Microbiota–Gut–Brain Axis: Sowing the Seeds of Good Mental Health (2021) · cites this paper as [45]
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- Authors
- Liszt, K., Zwielehner, J., Handschur, M., Hippe, B., Thaler, R., & Haslberger, A. G.
- Affiliations
- University of Vienna (AT)
- Venue
- Annals of Nutrition and Metabolism
- Publisher
- S. Karger AG
- Published
- 2009
- Volume
- 54
- Issue
- 4
- Pages
- 253-257
- ISSN
- 0250-6807 (ISSN-L)
- 1421-9697
- OpenAlex
- W2050526850
- Cited by
- 61
- References
- 36
- Citations by year
- 2024: 1 · 2023: 1 · 2022: 4 · 2021: 4 · 2020: 5 · 2019: 6 · 2018: 4 · 2017: 6 · 2016: 2 · 2015: 3 · 2014: 8 · 2013: 7 · 2012: 2
- FWCI
- 1.34
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Annals of Nutrition and Metabolism (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Oesterreichische Nationalbank
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
- Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
- Health Sciences › Medicine › Infectious Diseases › Clostridium difficile and Clostridium perfringens research
- Keywords
- vegetarian diet, gut microbiota, fecal microbiota, Clostridium cluster IV, Bacteroides, Bifidobacterium, Faecalibacterium, omnivores, bacterial diversity
- MeSH terms
- Adult, Bacteroides, Bifidobacterium, Clostridium, DNA, Bacterial, Electrophoresis, Feces, Humans, Surveys and Questionnaires, RNA, Ribosomal, 16S, Genetic Variation, Diet, Vegetarian, Colony Count, Microbial, Polymerase Chain Reaction, DNA Fingerprinting, Principal Component Analysis, Young Adult
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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