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Journal ArticleDOI

Gastric Microbiota

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TLDR
In this article, a non-H.pylori microbial community has been recently observed in the human stomach, the so-called human gastric microbiota, along with H. pylori itself.
Abstract
After the discovery of Helicobacter pylori in 1983, the stomach was no longer considered a sterile environment. In 2015, evolving data shows that H. pylori is not the only inhabitant of the gastric mucosa. Using culture-independent methods of analysis, a non-H. pylori microbial community has been recently observed in the human stomach, the so-called human gastric microbiota, along with H. pylori itself. Increasing evidence supports the hypothesis that although H. pylori may be the most relevant, it is not the only local bacterial culprit leading to gastric diseases. Further studies are warranted to offer a better picture of the role and functions of gastric microbiota and to identify the best therapeutic modulators of gut microbiota for the management of gastric diseases.

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Journal ArticleDOI

The interaction between smoking, alcohol and the gut microbiome.

TL;DR: The exact cause-effect relation between alcohol and smoking and changes of the gastrointestinal microbiome needs further exploration with high throughput methodologies, and controlled studies are necessary to define the role of microbiome modulation on the immune response and systemic activation of pro-inflammatory pathways.
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Microbiota at the crossroads of autoimmunity

TL;DR: It is suggested that many of the known cues affecting the function of the immune system, such as genetics, gender, pregnancy and diet, exert their effects by influencing, at least in part, the microbiota composition and activity, which modulates the immune response in a way that increases the risk for autoimmunity in predisposed individuals.
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Acid and the basis for cellular plasticity and reprogramming in gastric repair and cancer.

TL;DR: It is proposed that the stomach, like other organs, exhibits marked cellular plasticity: the glandular response involves reprogramming mature cells to serve as auxiliary stem cells that replace lost cells.
References
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Journal ArticleDOI

Unidentified curved bacilli in the stomach of patients with gastritis and peptic ulceration

TL;DR: The bacteria were present in almost all patients with active chronic gastritis, duodenal ulcer, or gastric ulcer and thus may be an important factor in the aetiology of these diseases.
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Comparative analysis of human gut microbiota by barcoded pyrosequencing.

TL;DR: This work has employed 454-pyrosequencing of a hyper-variable region of the 16S rRNA gene in combination with sample-specific barcode sequences which enables parallel in-depth analysis of hundreds of samples with limited sample processing, and demonstrated that the method correctly describes microbial communities down to phylotypes below the genus level.
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Molecular analysis of the bacterial microbiota in the human stomach

TL;DR: Bacterial diversity within the human gastric mucosa was characterized by using a small subunit 16S rDNA clone library approach and sequences generated by broad-range bacterial PCR from 23 gastric endoscopic biopsy samples were analyzed, featuring diversity at this site greater than previously described.
Journal ArticleDOI

Strategies for culture of ‘unculturable’ bacteria

TL;DR: The possible reasons for 'unculturability' are discussed, advances in the cultivation of previously unculturable bacteria from complex bacterial communities are evaluated and the provision of simulated natural environmental conditions for bacterial culture is evaluated.
Journal ArticleDOI

Inflammation and intestinal metaplasia of the distal esophagus are associated with alterations in the microbiome

TL;DR: In the human distal esophagus, inflammation and intestinal metaplasia are associated with global alteration of the microbiome, raising the issue of a possible role for dysbiosis in the pathogenesis of reflux-related disorders.
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