Bacteroidetes
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| Bacteroidetes | ||||
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Class Bacteroidetes |
The phylum Bacteroidetes is composed of three large classes of bacteria that are widely distributed in the environment, including in soil, in sediments, sea water and in the guts of animals.
By far, the Bacteroidales class are the most well-studied, including the genus Bacteroides (an abundant organism in the feces of warm-blooded animals including humans), and Porphyromonas, a group of organisms inhabiting the human oral cavity.
Members of the genus Bacteroides are opportunistic pathogens. Rarely are members of the other two classes pathogenic to humans.
Researcher Jeffrey Gordon and his colleagues found that obese humans and mice had intestinal flora (gut flora) with a lower percentage of a family of bacteria called Bacteroidetes and more Firmicutes. However, they are unsure if Bacteroidetes prevent obesity or if these intestinal flora are merely preferentially selected by intestinal conditions in those who are not obese.[1][2][3]
References
- ↑ Ley R, Bäckhed F, Turnbaugh P, Lozupone C, Knight R, Gordon J (2005). "Obesity alters gut microbial ecology". Proc Natl Acad Sci U S A 102 (31): 11070-5. PMID 16033867.
- ↑ Ley R, Turnbaugh P, Klein S, Gordon J (2006). "Microbial ecology: human gut microbes associated with obesity". Nature 444 (7122): 1022-3. PMID 17183309.
- ↑ Turnbaugh P, Ley R, Mahowald M, Magrini V, Mardis E, Gordon J (2006). "An obesity-associated gut microbiome with increased capacity for energy harvest". Nature 444 (7122): 1027-31. PMID 17183312.
External links
- Borenstein S (2006-12-21). scientists link weight to gut bacteria. Sci-Tech Today. Retrieved on 2007-02-09.
- Pubmed references:ga:Bacteroidetes
id:Bacteroidetes no:Bacteroidetesuk:Bacteroidetes-Chlorobi
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
