The microscopic populations of bacteria in our intestines are, in some ways, just like us: They live in communities, eat, work, reproduce, and eventually die. Many of these bacterial species live in harmony with our bodies, ...
Mar 11, 2020
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The existence of certain microorganisms in your gut may bolster the immune system's ability to fend off a herpes viral attack that can cause fatal brain inflammation, reports a new City of Hope-led study.
May 14, 2019
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The MyNewGut project has discovered new bacterial species and strains in healthy people that seem to be effective against obesity, metabolic and mental disorders related to stress and obesity (e.g. depression). They do so ...
Dec 18, 2018
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New Zealand scientists have identified a toxic bacteria they believe may cause bowel cancer and could lead to a life-saving vaccine or early detection test for the too-often deadly disease.
Jun 18, 2018
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Probiotic yogurts and pills promise better health, but the bacteria we ingest find a complex and challenging environment when they enter our gut. Food sources shift with every meal we eat, and the threat of pathogens is ever-present. ...
Nov 10, 2017
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The human intestine is home to a dense and diverse ecosystem of microbes, but little is known about how the abundant bacteria in our gut interact with each other. In a new study published in Nature this week, Brigham and ...
Apr 25, 2016
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Researchers from Case Western Reserve University in Cleveland have discovered that populating the gastrointestinal (GI) tracts of mice with Bacteroides species producing a specific enzyme helps protect the good commensal ...
Jun 12, 2014
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New insight into how gut bacteria digest fibre could lead to advances in areas as diverse as health and environmentally-friendly biofuels.
Jan 31, 2014
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(Medical Xpress)—Humans need microbes and microbes need humans, a symbiotic dance whose steps scientists are just beginning to learn.
Jan 23, 2014
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(Medical Xpress)—Humans may have acquired enzymes that make blood groups from bacteria to hinder the spread of viruses in the population, suggests a study led by scientists at the University of Bath.
Dec 19, 2012
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Bacteroides is a genus of Gram-negative, bacillus bacteria. Bacteroides species are non-endospore-forming, anaerobes, and may be either motile or non-motile, depending on the species. The DNA base composition is 40-48% GC. Unusual in bacterial organisms, Bacteroides membranes contain sphingolipids. They also contain meso-diaminopimelic acid in their peptidoglycan layer.
Bacteroides are normally mutualistic, making up the most substantial portion of the mammalian gastrointestinal flora, where they play a fundamental role in processing of complex molecules to simpler ones in the host intestine. As many as 1010-1011 cells per gram of human feces have been reported. They can use simple sugars when available; however, the main sources of energy for Bacteroides species in the gut are complex host-derived and plant glycans .
One of the most important clinically is Bacteroides fragilis.
Bacteroides melaninogenicus has recently been reclassified and split into Prevotella melaninogenica and Prevotella intermedia.
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