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The Firmicutes/Bacteroidetes ratio of the human microbiota changes with age
BACKGROUND: In humans, the intestinal microbiota plays an important role in the maintenance of host health by providing energy, nutrients, and immunological protection. Applying current molecular methods is necessary to surmount the limitations of classical culturing techniques in order to obtain an...
Autores principales: | , , , , , , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2009
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2702274/ https://www.ncbi.nlm.nih.gov/pubmed/19508720 http://dx.doi.org/10.1186/1471-2180-9-123 |
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author | Mariat, D Firmesse, O Levenez, F Guimarăes, VD Sokol, H Doré, J Corthier, G Furet, J-P |
author_facet | Mariat, D Firmesse, O Levenez, F Guimarăes, VD Sokol, H Doré, J Corthier, G Furet, J-P |
author_sort | Mariat, D |
collection | PubMed |
description | BACKGROUND: In humans, the intestinal microbiota plays an important role in the maintenance of host health by providing energy, nutrients, and immunological protection. Applying current molecular methods is necessary to surmount the limitations of classical culturing techniques in order to obtain an accurate description of the microbiota composition. RESULTS: Here we report on the comparative assessment of human fecal microbiota from three age-groups: infants, adults and the elderly. We demonstrate that the human intestinal microbiota undergoes maturation from birth to adulthood and is further altered with ageing. The counts of major bacterial groups Clostridium leptum, Clostridium coccoides, Bacteroidetes, Bifidobacterium, Lactobacillus and Escherichia coli were assessed by quantitative PCR (qPCR). By comparing species diversity profiles, we observed age-related changes in the human fecal microbiota. The microbiota of infants was generally characterized by low levels of total bacteria. C. leptum and C. coccoides species were highly represented in the microbiota of infants, while elderly subjects exhibited high levels of E. coli and Bacteroidetes. We observed that the ratio of Firmicutes to Bacteroidetes evolves during different life stages. For infants, adults and elderly individuals we measured ratios of 0.4, 10.9 and 0.6, respectively. CONCLUSION: In this work we have confirmed that qPCR is a powerful technique in studying the diverse and complex fecal microbiota. Our work demonstrates that the fecal microbiota composition evolves throughout life, from early childhood to old age. |
format | Text |
id | pubmed-2702274 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2009 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-27022742009-06-27 The Firmicutes/Bacteroidetes ratio of the human microbiota changes with age Mariat, D Firmesse, O Levenez, F Guimarăes, VD Sokol, H Doré, J Corthier, G Furet, J-P BMC Microbiol Research article BACKGROUND: In humans, the intestinal microbiota plays an important role in the maintenance of host health by providing energy, nutrients, and immunological protection. Applying current molecular methods is necessary to surmount the limitations of classical culturing techniques in order to obtain an accurate description of the microbiota composition. RESULTS: Here we report on the comparative assessment of human fecal microbiota from three age-groups: infants, adults and the elderly. We demonstrate that the human intestinal microbiota undergoes maturation from birth to adulthood and is further altered with ageing. The counts of major bacterial groups Clostridium leptum, Clostridium coccoides, Bacteroidetes, Bifidobacterium, Lactobacillus and Escherichia coli were assessed by quantitative PCR (qPCR). By comparing species diversity profiles, we observed age-related changes in the human fecal microbiota. The microbiota of infants was generally characterized by low levels of total bacteria. C. leptum and C. coccoides species were highly represented in the microbiota of infants, while elderly subjects exhibited high levels of E. coli and Bacteroidetes. We observed that the ratio of Firmicutes to Bacteroidetes evolves during different life stages. For infants, adults and elderly individuals we measured ratios of 0.4, 10.9 and 0.6, respectively. CONCLUSION: In this work we have confirmed that qPCR is a powerful technique in studying the diverse and complex fecal microbiota. Our work demonstrates that the fecal microbiota composition evolves throughout life, from early childhood to old age. BioMed Central 2009-06-09 /pmc/articles/PMC2702274/ /pubmed/19508720 http://dx.doi.org/10.1186/1471-2180-9-123 Text en Copyright ©2009 Mariat et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research article Mariat, D Firmesse, O Levenez, F Guimarăes, VD Sokol, H Doré, J Corthier, G Furet, J-P The Firmicutes/Bacteroidetes ratio of the human microbiota changes with age |
title | The Firmicutes/Bacteroidetes ratio of the human microbiota changes with age |
title_full | The Firmicutes/Bacteroidetes ratio of the human microbiota changes with age |
title_fullStr | The Firmicutes/Bacteroidetes ratio of the human microbiota changes with age |
title_full_unstemmed | The Firmicutes/Bacteroidetes ratio of the human microbiota changes with age |
title_short | The Firmicutes/Bacteroidetes ratio of the human microbiota changes with age |
title_sort | firmicutes/bacteroidetes ratio of the human microbiota changes with age |
topic | Research article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2702274/ https://www.ncbi.nlm.nih.gov/pubmed/19508720 http://dx.doi.org/10.1186/1471-2180-9-123 |
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