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Cited by 387

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High Prevalence of Methanobrevibacter smithii and Methanosphaera stadtmanae Detected in the Human Gut Using an Improved DNA Detection Protocol

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Dridi, Bédis, Henry, Mireille, El Khéchine, Amel, Raoult, Didier, Drancourt, Michel·2009·PLoS ONE

Abstract

BACKGROUND: The low and variable prevalence of Methanobrevibacter smithii and Methanosphaera stadtmanae DNA in human stool contrasts with the paramount role of these methanogenic Archaea in digestion processes. We hypothesized that this contrast is a consequence of the inefficiencies of current protocols for archaeon DNA extraction. We developed a new protocol for the extraction and PCR-based detection of M. smithii and M. stadtmanae DNA in human stool. METHODOLOGY/PRINCIPAL FINDINGS: Stool specimens collected from 700 individuals were filtered, mechanically lysed twice, and incubated overnight with proteinase K prior to DNA extraction using a commercial DNA extraction kit. Total DNA was used as a template for quantitative real-time PCR targeting M. smithii and M. stadtmanae 16S rRNA and rpoB genes. Amplification of 16S rRNA and rpoB yielded positive detection of M. smithii in 95.7% and M. stadtmanae in 29.4% of specimens. Sequencing of 16S rRNA gene PCR products from 30 randomly selected specimens (15 for M. smithii and 15 for M. stadtmanae) yielded a sequence similarity of 99-100% using the reference M. smithii ATCC 35061 and M. stadtmanae DSM 3091 sequences. CONCLUSIONS/SIGNIFICANCE: In contrast to previous reports, these data indicate a high prevalence of the methanogens M. smithii and M. stadtmanae in the human gut, with the former being an almost ubiquitous inhabitant of the intestinal microbiome.

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Metadata

Authors
Dridi, B., Henry, M., El Khéchine, A., Raoult, D., & Drancourt, M.
Venue
PLoS ONE
Published
2009-09-17
Volume
4
Issue
9
Pages
e7063
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2094244872
Cited by
387
References
3
FWCI
5.76
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: High Prevalence of Methanobrevibacter smithii and Methanosphaera stadtmanae Detected in the Human Gut Using an Improved DNA Detection Protocol. https://app.cochat.ai/papers/10.1371/journal.pone.0007063
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Dridi, B., Henry, M., El Khéchine, A., Raoult, D., & Drancourt, M. (2009). High Prevalence of Methanobrevibacter smithii and Methanosphaera stadtmanae Detected in the Human Gut Using an Improved DNA Detection Protocol. PLoS ONE. https://doi.org/10.1371/journal.pone.0007063

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