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Faecalibacterium prausnitzii

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https://www.readbyqxmd.com/read/27883264/mucosa-associated-biohydrogenating-microbes-protect-the-simulated-colon-microbiome-from-stress-associated-with-high-concentrations-of-poly-unsaturated-fat
#1
Rosemarie De Weirdt, Emma Hernandez-Sanabria, Veerle Fievez, Eva Mees, Annelies Geirnaert, Florence Van Herreweghen, Ramiro Vilchez-Vargas, Pieter Van den Abbeele, Ruy Jauregui, Dietmar H Pieper, Bruno Vlaeminck, Tom Van de Wiele
Polyunsaturated fatty acids (PUFAs) may affect colon microbiome homeostasis by exerting (specific) antimicrobial effects and/or interfering with mucosal biofilm formation at the gut mucosal interface. We used standardized batch incubations and the Mucosal-Simulator of the Human Microbial Intestinal Ecosystem (M-SHIME) to show the in vitro luminal and mucosal effects of the main PUFA in the Western diet, linoleic acid (LA). High concentrations of LA were found to decrease butyrate production and Faecalibacterium prausnitzii numbers dependent on LA biohydrogenation to vaccenic acid (VA) and stearic acid (SA)...
November 24, 2016: Environmental Microbiology
https://www.readbyqxmd.com/read/27833384/fecal-microbiota-in-pouchitis-and-ulcerative-colitis
#2
Kai-Yu Li, Jian-Lin Wang, Jiang-Peng Wei, Sen-Yang Gao, Ying-Ying Zhang, Li-Tian Wang, Gang Liu
AIM: To investigate the changes in microbiota in feces of patients with ulcerative colitis (UC) and pouchitis using genomic technology. METHODS: Fecal samples were obtained from UC patients with or without an ileal pouch-anal anastomosis (IPAA) procedure, as well as healthy controls. The touchdown polymerase chain reaction technique was used to amplify the whole V3 region of the 16S rRNA gene, which was transcribed from DNA extracted from fecal samples. Denaturing gradient gel electrophoresis was used to separate the amplicons...
October 28, 2016: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/27812181/altered-gut-microbiota-composition-associated-with-eczema-in-infants
#3
Huajun Zheng, Hong Liang, Yuezhu Wang, Maohua Miao, Tao Shi, Fen Yang, Enuo Liu, Wei Yuan, Zai-Si Ji, De-Kun Li
Eczema is frequently the first manifestation of an atopic diathesis and alteration in the diversity of gut microbiota has been reported in infants with eczema. To identify specific bacterial communities associated with eczema, we conducted a case-control study of 50 infants with eczema (cases) and 51 healthy infants (controls). We performed high-throughput sequencing for V3-V4 hypervariable regions of the 16S rRNA genes from the gut fecal material. A total of 12,386 OTUs (operational taxonomic units) at a 97% similarity level were obtained from the two groups, and we observed a difference in taxa abundance, but not the taxonomic composition, of gut microbiota between the two groups...
2016: PloS One
https://www.readbyqxmd.com/read/27808338/sialoglycoprotein-isolated-from-the-eggs-of-carassius-auratus-prevents-bone-loss-an-effect-associated-with-the-regulation-of-gut-microbiota-in-ovariectomized-rats
#4
Fei Wang, Peng Yu, Xiong Gui, Yiming Wang, Changhu Xue, Jingfeng Wang
The anti-osteoporotic effect of sialoglycoprotein isolated from the eggs of Carassius auratus (Ca-SGP) has previously been demonstrated in vivo. However, the mechanism by which this macromolecular substance regulates bone metabolism remains unclear. Given the correlation between gut microbiota and the homeostasis of bone metabolism, the current study applied real-time PCR and 16S rRNA high-throughput sequencing to investigate the influence of Ca-SGP on gut microbiota in ovariectomized rats. Real-time PCR analysis showed that Ca-SGP treatment significantly reversed the increase of Escherichia coli and Bacteroides fragilis, and the decrease of Clostridium leptum, Faecalibacterium prausnitzii, and Lactobacillus induced by ovariectomy...
November 3, 2016: Food & Function
https://www.readbyqxmd.com/read/27776263/association-of-brain-amyloidosis-with-pro-inflammatory-gut-bacterial-taxa-and-peripheral-inflammation-markers-in-cognitively-impaired-elderly
#5
Annamaria Cattaneo, Nadia Cattane, Samantha Galluzzi, Stefania Provasi, Nicola Lopizzo, Cristina Festari, Clarissa Ferrari, Ugo Paolo Guerra, Barbara Paghera, Cristina Muscio, Angelo Bianchetti, Giorgio Dalla Volta, Marinella Turla, Maria Sofia Cotelli, Michele Gennuso, Alessandro Prelle, Orazio Zanetti, Giulia Lussignoli, Dario Mirabile, Daniele Bellandi, Simona Gentile, Gloria Belotti, Daniele Villani, Taoufiq Harach, Tristan Bolmont, Alessandro Padovani, Marina Boccardi, Giovanni B Frisoni
The pathway leading from amyloid-β deposition to cognitive impairment is believed to be a cornerstone of the pathogenesis of Alzheimer's disease (AD). However, what drives amyloid buildup in sporadic nongenetic cases of AD is still unknown. AD brains feature an inflammatory reaction around amyloid plaques, and a specific subset of the gut microbiota (GMB) may promote brain inflammation. We investigated the possible role of the GMB in AD pathogenesis by studying the association of brain amyloidosis with (1) GMB taxa with pro- and anti-inflammatory activity; and (2) peripheral inflammation in cognitively impaired patients...
August 31, 2016: Neurobiology of Aging
https://www.readbyqxmd.com/read/27769168/comparative-genomics-of-clostridium-bolteae-and-clostridium-clostridioforme-reveals-species-specific-genomic-properties-and-numerous-putative-antibiotic-resistance-determinants
#6
Pierre Dehoux, Jean Christophe Marvaud, Amr Abouelleil, Ashlee M Earl, Thierry Lambert, Catherine Dauga
BACKGROUND: Clostridium bolteae and Clostridium clostridioforme, previously included in the complex C. clostridioforme in the group Clostridium XIVa, remain difficult to distinguish by phenotypic methods. These bacteria, prevailing in the human intestinal microbiota, are opportunistic pathogens with various drug susceptibility patterns. In order to better characterize the two species and to obtain information on their antibiotic resistance genes, we analyzed the genomes of six strains of C...
October 21, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27747984/effects-of-varying-dietary-content-of-fermentable-short-chain-carbohydrates-on-symptoms-fecal-microenvironment-and-cytokine-profiles-in-patients-with-irritable-bowel-syndrome
#7
T N Hustoft, T Hausken, S O Ystad, J Valeur, K Brokstad, J G Hatlebakk, G A Lied
BACKGROUND: A diet low in fermentable oligosaccharides, disaccharides, monosaccharides, and polyols (FODMAPs) is increasingly recommended for patients with irritable bowel syndrome (IBS). We aimed to investigate the effects of a blinded low-FODMAP vs high-fructo-oligosaccharides (FOS) diet on symptoms, immune activation, gut microbiota composition, and short-chain fatty acids (SCFAs). METHODS: Twenty patients with diarrhea-predominant or mixed IBS were instructed to follow a low-FODMAP diet (LFD) throughout a 9-week study period...
October 16, 2016: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/27713989/assessment-of-the-prebiotic-effect-of-quinoa-and-amaranth-in-the-human-intestinal-ecosystem
#8
Beatriz Gullón, Patricia Gullón, Freni K Tavaria, Remedios Yáñez
Quinoa and amaranth belong to the group of the so called "superfoods" and have a nutritional composition that confers multiple benefits. In this work, we explored the possibility of these foods exhibiting a prebiotic effect. These pseudocereals were subjected to an in vitro digestion and used as carbon sources in batch cultures with faecal human inocula. The effects on the microbiota composition and their metabolic products were determined by assessment of variations in pH, short-chain fatty acid (SCFA) production and changes in the dynamic bacterial populations by fluorescence in situ hybridization (FISH)...
September 14, 2016: Food & Function
https://www.readbyqxmd.com/read/27708392/unique-features-of-ethnic-mongolian-gut-microbiome-revealed-by-metagenomic-analysis
#9
Wenjun Liu, Jiachao Zhang, Chunyan Wu, Shunfeng Cai, Weiqiang Huang, Jing Chen, Xiaoxia Xi, Zebin Liang, Qiangchuan Hou, Bing Zhou, Nan Qin, Heping Zhang
The human gut microbiota varies considerably among world populations due to a variety of factors including genetic background, diet, cultural habits and socioeconomic status. Here we characterized 110 healthy Mongolian adults gut microbiota by shotgun metagenomic sequencing and compared the intestinal microbiome among Mongolians, the Hans and European cohorts. The results showed that the taxonomic profile of intestinal microbiome among cohorts revealed the Actinobaceria and Bifidobacterium were the key microbes contributing to the differences among Mongolians, the Hans and Europeans at the phylum level and genus level, respectively...
October 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27694739/gut-microbiota-related-to-giardia-duodenalis-entamoeba-spp-and-blastocystis-hominis-infections-in-humans-from-c%C3%A3-te-d-ivoire
#10
Valerio Iebba, Floriana Santangelo, Valentina Totino, Fabrizio Pantanella, Anatole Monsia, Veronica Di Cristanziano, David Di Cave, Serena Schippa, Federica Berrilli, Rossella D'Alfonso
INTRODUCTION: Literature data provide little information about protozoa infections and gut microbiota compositional shifts in humans. This preliminary study aimed to describe the fecal bacterial community composition of people from Côte d'Ivoire harboring Giardia duodenalis, Entamoeba spp., and Blastocystis hominis, in trying to discover possible alterations in their fecal microbiota structure related to the presence of such parasites. METHODOLOGY: Twenty fecal samples were collected from people inhabiting three different localities of Côte d'Ivoire for copromicroscopic analysis and molecular identification of G...
September 30, 2016: Journal of Infection in Developing Countries
https://www.readbyqxmd.com/read/27687331/the-association-between-the-gut-microbiota-and-the-inflammatory-bowel-disease-activity-a-systematic-review-and-meta-analysis
#11
Michelle Prosberg, Flemming Bendtsen, Ida Vind, Andreas M Petersen, Lise L Gluud
BACKGROUND: The pathogenesis of inflammatory bowel diseases (IBD) involves complex interactions between the microbiome and the immune system. We evaluated the association between the gut microbiota and disease activity in IBD patients. METHODS: Systematic review of clinical studies based on a published protocol. Included patients had ulcerative colitis (UC) or Crohn's disease (CD) classified as active or in remission. We selected bacteria assessed in at least three studies identified through electronic and manual searches (November 2015)...
December 2016: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/27577947/gut-microbiota-of-obese-type-2-diabetic-individuals-is-enriched-in-faecalibacterium-prausnitzii-akkermansia-muciniphila-and-peptostreptococcus-anaerobius-after-weight-loss
#12
Marlene Remely, Berit Hippe, Julia Zanner, Eva Aumueller, Helmuth Brath, Alexander G Haslberger
Beside the influence of nutritional habits and reduced physical activity, metabolic syndrome is associated with alterations in the structure of gut microbiota influencing the inflammatory immune responses. Gut microbiota and microbial metabolic activities are known to affect the lipid and glucose metabolism, satiety and chronic low-grade inflammation in the metabolic syndrome. The aim of the study was to identify genera or even species affecting host metabolism in obesity and type 2 diabetes beside the commonly used indicator: Firmicutes/Bacteroidetes ratio...
August 30, 2016: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/27569889/role-of-intestinal-flora-imbalance-in-pathogenesis-of-pouchitis
#13
Xiao-Bo Feng, Jun Jiang, Min Li, Gang Wang, Jin-Wei You, Jian Zuo
OBJECTIVE: To discuss the role of intestinal flora imbalance in the pathogenesis of pouchitis. METHODS: The pouchitis rat model was established and the faeces sample and the mucous membrane sample were collected regularly, in which the bacterial nucleic acids were extracted for quantitative analysis of the intestinal flora in the samples through using the real-time quantitative PCR technique and high energy sequencing technology. RESULTS: The disorder phenomenon of the intestinal flora appeared at the 7th day of the experiment, and the pouchitis was presented at the 21st day of the experiment...
August 2016: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/27547442/gut-microbiota-associated-with-hiv-infection-is-significantly-enriched-in-bacteria-tolerant-to-oxygen
#14
Grégory Dubourg, Jean-Christophe Lagier, Sophie Hüe, Mathieu Surenaud, Dipankar Bachar, Catherine Robert, Caroline Michelle, Isabelle Ravaux, Saadia Mokhtari, Matthieu Million, Andreas Stein, Philippe Brouqui, Yves Levy, Didier Raoult
OBJECTIVES: Gut microbiota modifications occurring during HIV infection have recently been associated with inflammation and microbial translocation. However, discrepancies between studies justified a comprehensive analysis performed on a large sample size. DESIGN AND METHODS: In a case-control study, next-generation sequencing of the 16S rRNA gene was applied to the faecal microbiota of 31 HIV-infected patients, of whom 18 were treated with antiretroviral treatment (ART), compared with 27 healthy controls...
2016: BMJ Open Gastroenterology
https://www.readbyqxmd.com/read/27542127/gut-microbial-diversity-is-reduced-in-smokers-with-crohn-s-disease
#15
Jorrit L Opstelten, Jonathan Plassais, Saskia W C van Mil, Emna Achouri, Matthieu Pichaud, Peter D Siersema, Bas Oldenburg, Alessandra C L Cervino
BACKGROUND: Smoking has a negative impact on Crohn's disease (CD), but the mechanisms underlying this association are unclear. We compared the gut microbiota composition of smoking with nonsmoking patients with CD using a metagenomic approach. METHODS: Stool samples and clinical data were collected from current smokers and nonsmokers with CD from France and the Netherlands, matched for country, gender, age, disease activity, and body mass index. Fecal DNA was sequenced on an Illumina HiSeq 2500...
September 2016: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/27537603/age-associated-effect-of-kestose-on-faecalibacterium-prausnitzii-and-symptoms-in-the-atopic-dermatitis-infants
#16
Yasuhiro Koga, Shouji Tokunaga, Jun Nagano, Fuyuhiko Sato, Kenta Konishi, Takumi Tochio, Youko Murakami, Natsuko Masumoto, Jun-Ichirou Tezuka, Nobuyuki Sudo, Chiharu Kubo, Rumiko Shibata
BACKGROUND: Although Faecalibacterium prausnitzii is a major bacterium in the intestine of adults, which is known to have anti-inflammatory effects, the development in infants or the response to prebiotics remains unclear. METHODS: The counts of F. prausnitzii in the feces were examined by real-time polymerase chain reaction (PCR). Fecal samples were obtained from 65 atopic dermatitis (AD) infants who participated in a randomized controlled clinical trial to investigate the therapeutic effect of kestose, the smallest fructooligosaccharide...
December 2016: Pediatric Research
https://www.readbyqxmd.com/read/27499582/comparison-of-the-gut-microbial-community-between-obese-and-lean-peoples-using-16s-gene-sequencing-in-a-japanese-population
#17
Akira Andoh, Atsushi Nishida, Kenichiro Takahashi, Osamu Inatomi, Hirotsugu Imaeda, Shigeki Bamba, Katsuyuki Kito, Mitsushige Sugimoto, Toshio Kobayashi
Altered gut microbial ecology contributes to the development of metabolic diseases including obesity. In this study, we performed 16S rRNA sequence analysis of the gut microbiota profiles of obese and lean Japanese populations. The V3-V4 hypervariable regions of 16S rRNA of fecal samples from 10 obese and 10 lean volunteers were sequenced using the Illumina MiSeq(TM)II system. The average body mass index of the obese and lean group were 38.1 and 16.6 kg/m(2), respectively (p<0.01). The Shannon diversity index was significantly higher in the lean group than in the obese group (p<0...
July 2016: Journal of Clinical Biochemistry and Nutrition
https://www.readbyqxmd.com/read/27466607/gut-microbiota-richness-and-composition-and-dietary-intake-of-overweight-pregnant-women-are-related-to-serum-zonulin-concentration-a-marker-for-intestinal-permeability
#18
Kati Mokkala, Henna Röytiö, Eveliina Munukka, Sami Pietilä, Ulla Ekblad, Tapani Rönnemaa, Erkki Eerola, Asta Laiho, Kirsi Laitinen
BACKGROUND: Increased intestinal permeability may precede adverse metabolic conditions. The extent to which the composition of the gut microbiota and diet contribute to intestinal permeability during pregnancy is unknown. OBJECTIVE: The aim was to investigate whether the gut microbiota and diet differ according to serum zonulin concentration, a marker of intestinal permeability, in overweight pregnant women. METHODS: This cross-sectional study included 100 overweight women [mean age: 29 y; median body mass index (in kg/m(2)): 30] in early pregnancy (<17 wk of gestation; median: 13 wk)...
September 2016: Journal of Nutrition
https://www.readbyqxmd.com/read/27446020/bifidobacteria-and-butyrate-producing-colon-bacteria-importance-and-strategies-for-their-stimulation-in-the-human-gut
#19
REVIEW
Audrey Rivière, Marija Selak, David Lantin, Frédéric Leroy, Luc De Vuyst
With the increasing amount of evidence linking certain disorders of the human body to a disturbed gut microbiota, there is a growing interest for compounds that positively influence its composition and activity through diet. Besides the consumption of probiotics to stimulate favorable bacterial communities in the human gastrointestinal tract, prebiotics such as inulin-type fructans (ITF) and arabinoxylan-oligosaccharides (AXOS) can be consumed to increase the number of bifidobacteria in the colon. Several functions have been attributed to bifidobacteria, encompassing degradation of non-digestible carbohydrates, protection against pathogens, production of vitamin B, antioxidants, and conjugated linoleic acids, and stimulation of the immune system...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27431681/a-reduction-in-the-butyrate-producing-species-roseburia-spp-and-faecalibacterium-prausnitzii-is-associated-with-chronic-kidney-disease-progression
#20
Shuanghong Jiang, Shan Xie, Dan Lv, Yan Zhang, Jun Deng, Lishan Zeng, Ye Chen
The human gut microbiota plays an important role in human health and might also be implicated in kidney disease. The interest in butyrate producing bacteria has recently increased and is a poorly understood faecal condition in chronic kidney disease (CKD). Therefore, we evaluated differences of the butyrate producing species Roseburia spp. and Faecalibacterium prausnitzii in the faeces of Chinese patients with CKD. A case-control study was carried out for 65 CKD patients and 20 healthy controls. Differences were quantitatively validated using quantitative real-time polymerase chain reaction (qPCR)...
October 2016: Antonie Van Leeuwenhoek
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