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Faecalibacterium prausnitzii

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https://www.readbyqxmd.com/read/28633443/nod2-genetic-variants-predispose-one-of-two-familial-adenomatous-polyposis-siblings-to-pouchitis-through-microbiome-dysbiosis
#1
Kathleen M Schieffer, Justin R Wright, Leonard R Harris, Sue Deiling, Zhaohai Yang, Regina Lamendella, Gregory S Yochum, Walter A Koltun
Background and Aims: Individuals with familial adenomatous polyposis (FAP) may undergo a total proctocolectomy with ileal pouch-anal anastomosis (IPAA) to surgically treat their disease. Inflammation of the ileal pouch, termed pouchitis, is uncommon in FAP patients but prevalent in patients who received IPAA for ulcerative colitis, a type of inflammatory bowel disease (IBD). Methods and Results: We report on two FAP siblings, living in the same household, who underwent IPAA surgery within one week of each other...
June 19, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28589947/gut-microbiota-composition-in-relation-to-the-metabolic-response-to-12-week-combined-polyphenol-supplementation-in-overweight-men-and-women
#2
J Most, J Penders, M Lucchesi, G H Goossens, E E Blaak
BACKGROUND/OBJECTIVES: The intestinal microbiota may have a profound impact on host metabolism. As evidence suggests that polyphenols affect substrate utilization, the present study aimed to investigate the effects of polyphenol supplementation on intestinal microbiota composition in humans. Furthermore, we examined whether (changes in) gut microbiota composition may determine the metabolic response to polyphenol supplementation. SUBJECTS/METHODS: In this randomized, double-blind, placebo (PLA)-controlled trial, 37 overweight and obese men and women (18 males/19 females, 37...
June 7, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28588309/alteration-of-the-gut-microbiota-in-chinese-population-with-chronic-kidney-disease
#3
Shuanghong Jiang, Shan Xie, Dan Lv, Pu Wang, Hanchang He, Ting Zhang, Youlian Zhou, Qianyun Lin, Hongwei Zhou, Jianping Jiang, Jing Nie, Fanfan Hou, Ye Chen
We evaluated differences in the compositions of faecal microbiota between 52 end stage renal disease (ESRD) patients and 60 healthy controls in southern China using quantitative real-time polymerase chain reaction (qPCR) and high-throughput sequencing (16S ribosomal RNA V4-6 region) methods. The absolute quantification of total bacteria was significantly reduced in ESRD patients (p < 0.01). In three enterotypes, Prevotella was enriched in the healthy group whereas Bacteroides were prevalent in the ESRD group (LDA score > 4...
June 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28568309/effect-of-soybean-husk-supplementation-on-the-fecal-fermentation-metabolites-and-microbiota-of-dogs
#4
Htun Myint, Yu Iwahashi, Satoshi Koike, Yasuo Kobayashi
In vitro fermentation and in vivo feeding experiments were conducted to characterize the effects of soybean (Glycine max) husk on the fecal fermentation metabolites and microbiota of dogs. An in vitro fermentation study using feces from three Toy Poodle dogs (6.5 ± 3.5 months in age and 2.9 ± 0.4 kg in body weight) revealed that the fecal inoculum was able to ferment soybean husk (supplemented at 0.01 g/mL culture) and increased levels of short chain fatty acids (SCFA) and Bifidobacterium, irrespective of pre-digestion of the husk by pepsin and pancreatin...
June 1, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28558792/a-diet-change-from-dry-food-to-beef-induces-reversible-changes-on-the-faecal-microbiota-in-healthy-adult-client-owned-dogs
#5
Kristin M V Herstad, Karina Gajardo, Anne Marie Bakke, Lars Moe, Jane Ludvigsen, Knut Rudi, Ida Rud, Monika Sekelja, Ellen Skancke
BACKGROUND: Diet has a major influence on the composition of the gut microbiota, whose importance for gut health and overall well-being is increasingly recognized. Knowledge is limited regarding health implications, including effects on the faecal microbiota, of feeding a diet with high content of red meat to dogs, despite some owners' apparent preference to do so. The aim of this study was to evaluate how a diet change from commercial dry food to one with a high content of boiled minced beef and vice versa influenced the faecal microbiota, and short chain fatty acid profile in healthy, adult, client-owned dogs...
May 30, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28548573/inulin-type-fructan-degradation-capacity-of-clostridium-cluster-iv-and-xiva-butyrate-producing-colon-bacteria-and-their-associated-metabolic-outcomes
#6
F Moens, L De Vuyst
Four selected butyrate-producing colon bacterial strains belonging to Clostridium cluster IV (Butyricicoccus pullicaecorum DSM 23266(T) and Faecalibacterium prausnitzii DSM 17677(T)) and XIVa (Eubacterium hallii DSM 17630 and Eubacterium rectale CIP 105953(T)) were studied as to their capacity to degrade inulin-type fructans and concomitant metabolite production. Cultivation of these strains was performed in bottles and fermentors containing a modified medium for colon bacteria, including acetate, supplemented with either fructose, oligofructose, or inulin as the sole energy source...
May 30, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/28538678/effects-of-commercial-apple-varieties-on-human-gut-microbiota-composition-and-metabolic-output-using-an-in-vitro-colonic-model
#7
Athanasios Koutsos, Maria Lima, Lorenza Conterno, Mattia Gasperotti, Martina Bianchi, Francesca Fava, Urska Vrhovsek, Julie A Lovegrove, Kieran M Tuohy
Apples are a rich source of polyphenols and fiber. A major proportion of apple polyphenols escape absorption in the small intestine and together with non-digestible polysaccharides reach the colon, where they can serve as substrates for bacterial fermentation. Animal studies suggest a synergistic interaction between apple polyphenols and the soluble fiber pectin; however, the effects of whole apples on human gut microbiota are less extensively studied. Three commercial apple varieties-Renetta Canada, Golden Delicious and Pink Lady-were digested and fermented in vitro using a batch culture colonic model (pH 5...
May 24, 2017: Nutrients
https://www.readbyqxmd.com/read/28455781/reduction-in-fecal-microbiota-diversity-and-short-chain-fatty-acid-producers-in-methicillin-resistant-staphylococcus-aureus-infected-individuals-as-revealed-by-pacbio-single-molecule-real-time-sequencing-technology
#8
J Zhao, L Nian, L Y Kwok, T Sun, J Zhao
Methicillin-resistant Staphylococcus aureus (MRSA) may cause potentially lethal infections. Increasing evidence suggests that the gut microbiota is associated with human health. Yet, whether patients with MRSA infections carry specific signatures in their fecal microbiota composition has not been determined. Thus, this study aimed to compare the fecal microbiota profile of MRSA-positive patients (n=15) with individuals without MRSA infection (n=15) by using the PacBio single molecule, real-time (SMRT) DNA sequencing system and real-time quantitative polymerase chain reaction (qPCR)...
April 28, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28382453/metabolic-adaptation-to-the-aqueous-leaf-extract-of-moringa-oleifera-lam-supplemented-diet-is-related-to-the-modulation-of-gut-microbiota-in-mice
#9
Xiaoyu Gao, Qiuhong Xie, Ling Liu, Ping Kong, Jun Sheng, Hongyu Xiang
The aqueous leaf extract of Moringa oleifera Lam. (LM-A) is reported to have many health beneficial bioactivities and no obvious toxicity, but have mild adverse effects. Little is known about the mechanism of these reported adverse effects. Notably, there has been no report about the influence of LM-A on intestinal microecology. In this study, animal experiments were performed to explore the relationships between metabolic adaptation to an LM-A-supplemented diet and gut microbiota changes. After 8-week feeding with normal chow diet, the body weight of mice entered a stable period, and one of the group received daily doses of 750-mg/kg body weight LM-A by gavage for 4 weeks (assigned as LM); the other group received the vehicle (assigned as NCD)...
April 5, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28375212/faecalibacterium-prausnitzii-treatment-improves-hepatic-health-and-reduces-adipose-tissue-inflammation-in-high-fat-fed-mice
#10
Eveliina Munukka, Anniina Rintala, Raine Toivonen, Matts Nylund, Baoru Yang, Anna Takanen, Arno Hänninen, Jaana Vuopio, Pentti Huovinen, Sirpa Jalkanen, Satu Pekkala
Faecalibacterium prausnitzii is considered as one of the most important bacterial indicators of a healthy gut. We studied the effects of oral F. prausnitzii treatment on high-fat fed mice. Compared to the high-fat control mice, F. prausnitzii-treated mice had lower hepatic fat content, aspartate aminotransferase and alanine aminotransferase, and increased fatty acid oxidation and adiponectin signaling in liver. Hepatic lipidomic analyses revealed decreases in several species of triacylglycerols, phospholipids and cholesteryl esters...
April 4, 2017: ISME Journal
https://www.readbyqxmd.com/read/28368458/baseline-gut-microbiota-predicts-clinical-response-and-colitis-in-metastatic-melanoma-patients-treated-with-ipilimumab
#11
N Chaput, P Lepage, C Coutzac, E Soularue, K Le Roux, C Monot, L Boselli, E Routier, L Cassard, M Collins, T Vaysse, L Marthey, A Eggermont, V Asvatourian, E Lanoy, C Mateus, C Robert, F Carbonnel
Background: Ipilimumab, an immune checkpoint inhibitor targeting CTLA-4, prolongs survival in a subset of patients with metastatic melanoma (MM) but can induce immune-related adverse events, including enterocolitis. We hypothesized that baseline gut microbiota could predict ipilimumab anti-tumor response and/or intestinal toxicity. Patients and methods: Twenty-six patients with MM treated with ipilimumab were prospectively enrolled. Fecal microbiota composition was assessed using 16S rRNA gene sequencing at baseline and before each ipilimumab infusion...
June 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28361745/short-term-impact-of-a-classical-ketogenic-diet-on-gut-microbiota-in-glut1-deficiency-syndrome-a-3-month-prospective-observational-study
#12
Anna Tagliabue, Cinzia Ferraris, Francesca Uggeri, Claudia Trentani, Simona Bertoli, Valentina de Giorgis, Pierangelo Veggiotti, Marina Elli
BACKGROUND&AIMS: The classical ketogenic diet (KD) is a high-fat, very low-carbohydrate normocaloric diet used for drug-resistant epilepsy and Glucose Transporter 1 Deficiency Syndrome (GLUT1 DS). In animal models, high fat diet induces large alterations in microbiota producing deleterious effects on gut health. We carried out a pilot study on patients treated with KD comparing their microbiota composition before and after three months on the diet. METHODS: Six patients affected by GLUT1 DS were asked to collect fecal samples before and after three months on the diet...
February 2017: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28355361/anaerobic-bacteria-in-the-intestinal-microbiota-of-brazilian-children
#13
Silvia T Talarico, Florenza E Santos, Katia Galeão Brandt, Marina B Martinez, Carla R Taddei
OBJECTIVE: Changes in the neonatal gut environment allow for the colonization of the mucin layer and lumen by anaerobic bacteria. The aim of the present study was to evaluate Bifidobacterium, Lactobacillus and Lactococcus colonization through the first year of life in a group of 12 Brazilian infants and to correlate these data with the levels of Escherichia coli. The presence of anaerobic members of the adult intestinal microbiota, including Eubacterium limosum and Faecalibacterium prausnitzii, was also evaluated...
March 2017: Clinics
https://www.readbyqxmd.com/read/28286571/we-are-not-alone-a-case-for-the-human-microbiome-in-extra-intestinal-diseases
#14
EDITORIAL
S Shivaji
BACKGROUND: "Dysbiosis" in the gut microbiome has been implicated in auto-immune diseases, in inflammatory diseases, in some cancers and mental disorders. The challenge is to unravel the cellular and molecular basis of dysbiosis so as to understand the disease manifestation. MAIN BODY: Next generation sequencing and genome enabled technologies have led to the establishment of the composition of gut microbiomes and established that "dysbiosis" is the cause of several diseases...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/28262770/fecal-bacterial-communities-in-treated-hiv-infected-individuals-on-two-antiretroviral-regimens
#15
Sandra Pinto-Cardoso, Catherine Lozupone, Olivia Briceño, Selma Alva-Hernández, Norma Téllez, Aguilar Adriana, Akio Murakami-Ogasawara, Gustavo Reyes-Terán
Intestinal microbiome changes that occur in HIV positive individuals on different antiretroviral therapy (ART) regimens are important to understand, as they are potentially linked with chronic inflammation and microbiome-linked comorbidities that occur at increased incidence in this population. We conducted a cross-sectional study comparing the fecal microbiomes of HIV-uninfected (HIV SN) to HIV-infected individuals on long-term ART (HIV+ LTART) from Mexico using 16S ribosomal RNA (16sRNA) targeted sequencing...
March 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28255158/altered-intestinal-microbiota-in-patients-with-chronic-pancreatitis-implications-in-diabetes-and-metabolic-abnormalities
#16
Sai Manasa Jandhyala, A Madhulika, G Deepika, G Venkat Rao, D Nageshwar Reddy, Chivukula Subramanyam, Mitnala Sasikala, Rupjyoti Talukdar
Intestinal dysbiosis and its functional implications in chronic pancreatitis (CP) have not been elaborately studied. We evaluated the taxonomic and functional alterations in intestinal microbiota in 30 well-characterised patients with CP (16 without, 14 with diabetes) and 10 healthy controls. The patients with CP and diabetes had significantly longer disease duration and greater degree of malnutrition. There was increase in plasma endotoxin concentrations from controls to CP non-diabetics to CP diabetics. We observed significant differences in richness and alpha diversity between the groups...
March 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28249045/pili-like-proteins-of-akkermansia-muciniphila-modulate-host-immune-responses-and-gut-barrier-function
#17
Noora Ottman, Justus Reunanen, Marjolein Meijerink, Taija E Pietilä, Veera Kainulainen, Judith Klievink, Laura Huuskonen, Steven Aalvink, Mikael Skurnik, Sjef Boeren, Reetta Satokari, Annick Mercenier, Airi Palva, Hauke Smidt, Willem M de Vos, Clara Belzer
Gut barrier function is key in maintaining a balanced response between the host and its microbiome. The microbiota can modulate changes in gut barrier as well as metabolic and inflammatory responses. This highly complex system involves numerous microbiota-derived factors. The gut symbiont Akkermansia muciniphila is positively correlated with a lean phenotype, reduced body weight gain, amelioration of metabolic responses and restoration of gut barrier function by modulation of mucus layer thickness. However, the molecular mechanisms behind its metabolic and immunological regulatory properties are unexplored...
2017: PloS One
https://www.readbyqxmd.com/read/28244658/nutritional-microbiological-and-psychosocial-implications-of-the-low-fodmap-diet
#18
REVIEW
Heidi Maria Staudacher
Dietary restriction of certain fermentable carbohydrates (low fermentable oligosaccharides, disaccharides, monosaccharides and polyols (FODMAP) diet) is effective for managing symptoms of irritable bowel syndrome (IBS). However, there are potential consequences of this diet that relate to its impact on nutritional, microbiological, and health-related quality of life outcomes. Evidence suggests that the low FODMAP diet leads to some alterations in nutrient intake. For example, carbohydrate intake is reduced, and there is a decrease in the proportion of patients meeting the recommended intake for calcium...
March 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28239378/enterococcus-durans-ep1-a-promising-anti-inflammatory-probiotic-able-to-stimulate-siga-and-to-increase-faecalibacterium-prausnitzii-abundance
#19
Paula Carasi, Silvia María Racedo, Claudine Jacquot, Anne Marie Elie, María de Los Ángeles Serradell, María C Urdaci
Enterococcus species, principally Enterococcus faecium are used as probiotics since a long time with preference in animal applications but safety considerations were updated and also new uses as probiotics can be envisaged. Fifteen Enterococcus strains isolated from different foods were identified and analyzed for virulence factors and antibiotic resistance. Three Enterococcus durans strains were selected to study their immunomodulatory properties on PBMC and Caco2 cells. Two strains presented a profile toward a mild inflammatory Th1 response considering TNF-α/IL-10 and IL-1β/IL-10 cytokines ratios...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28203226/microbial-anti-inflammatory-molecule-mam-from-faecalibacterium-prausnitzii-shows-a-protective-effect-on-dnbs-and-dss-induced-colitis-model-in-mice-through-inhibition-of-nf-%C3%AE%C2%BAb-pathway
#20
Natalia M Breyner, Cristophe Michon, Cassiana S de Sousa, Priscilla B Vilas Boas, Florian Chain, Vasco A Azevedo, Philippe Langella, Jean M Chatel
Faecalibacterium prausnitzii and its supernatant showed protective effects in different chemically-induced colitis models in mice. Recently, we described 7 peptides found in the F. prausnitzii supernatant, all belonging to a protein called Microbial Anti-inflammatory Molecule (MAM). These peptides were able to inhibit NF-κB pathway in vitro and showed anti-inflammatory properties in vivo in a DiNitroBenzene Sulfate (DNBS)-induced colitis model. In this current proof we tested MAM effect on NF-κB pathway in vivo, using a transgenic model of mice producing luciferase under the control of NF-κB promoter...
2017: Frontiers in Microbiology
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