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https://www.readbyqxmd.com/read/28429209/analysis-of-gut-microbiota-in-patients-with-parkinson-s-disease
#1
V A Petrov, I V Saltykova, I A Zhukova, V M Alifirova, N G Zhukova, Yu B Dorofeeva, A V Tyakht, B A Kovarsky, D G Alekseev, E S Kostryukova, Yu S Mironova, O P Izhboldina, M A Nikitina, T V Perevozchikova, E A Fait, V V Babenko, M T Vakhitova, V M Govorun, A E Sazonov
Gut microbiota of patients with Parkinson's disease and healthy volunteers was analyzed by the method of high throughput 16S rRNA sequencing of bacterial genomes. In patients with Parkinson's diseases, changes in the content of 9 genera and 15 species of microorganisms were revealed: reduced content of Dorea, Bacteroides, Prevotella, Faecalibacterium, Bacteroides massiliensis, Stoquefichus massiliensis, Bacteroides coprocola, Blautia glucerasea, Dorea longicatena, Bacteroides dorei, Bacteroides plebeus, Prevotella copri, Coprococcus eutactus, and Ruminococcus callidus, and increased content of Christensenella, Catabacter, Lactobacillus, Oscillospira, Bifidobacterium, Christensenella minuta, Catabacter hongkongensis, Lactobacillus mucosae, Ruminococcus bromii, and Papillibacter cinnamivorans...
April 20, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28415978/bacterial-communities-and-metabolic-activity-of-faecal-cultures-from-equol-producer-and-non-producer-menopausal-women-under-treatment-with-soy-isoflavones
#2
Lucía Guadamuro, Anja B Dohrmann, Christoph C Tebbe, Baltasar Mayo, Susana Delgado
BACKGROUND: Isoflavones are polyphenols with estrogenic activity found mainly in soy and soy-derived products that need to be metabolised in the intestine by the gut bacteria to be fully active. There is little knowledge about isoflavone bioconversion and equol production in the human intestine. In this work, we developed an in vitro anaerobic culture model based on faecal slurries to assess the impact of isoflavone supplementation on the overall intestinal bacterial composition changes and associated metabolic transformations...
April 17, 2017: BMC Microbiology
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
#3
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
#4
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
#5
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: HASH(0x44f3e80) Ipilimumab, an immune checkpoint inhibitor targeting CTLA-4, prolongs survival in a subset of patients with metastatic melanoma 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: HASH(0x40334f0) Twenty-six patients with metastatic melanoma treated with ipilimumab were prospectively enrolled...
March 27, 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
#6
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/28358023/relevance-of-secretor-status-genotype-and-microbiota-composition-in-susceptibility-to-rotavirus-and-norovirus-infections-in-humans
#7
Jesús Rodríguez-Díaz, Izaskun García-Mantrana, Susana Vila-Vicent, Roberto Gozalbo-Rovira, Javier Buesa, Vicente Monedero, Maria Carmen Collado
Host genetic factors, such as histo-blood group antigens (HBGAs), are associated with susceptibility to norovirus (NoV) and rotavirus (RV) infections. Recent advances point to the gut microbiome as a key player necessary for a viral pathogen to cause infection. In vitro NoV attachment to host cells and resulting infections have been linked to interactions with certain bacterial types in the gut microbiota. We investigated the relationship between host genotype, gut microbiota, and viral infections. Saliva and fecal samples from 35 adult volunteers were analysed for secretor status genotype, the gut microbiota composition by 16S rRNA gene sequencing, and salivary IgA titers to NoV and RV...
March 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28355361/anaerobic-bacteria-in-the-intestinal-microbiota-of-brazilian-children
#8
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/28349946/gut-metagenomic-analysis-reveals-prominent-roles-of-lactobacillus-and-cecal-microbiota-in-chicken-feed-efficiency
#9
Wei Yan, Congjiao Sun, Jingwei Yuan, Ning Yang
Interactions between the host and gut microbiota can affect gut metabolism. In this study, the individual performances of 252 hens were recorded to evaluate feed efficiency. Hens with contrasting feed efficiencies (14 birds per group) were selected to investigate their duodenal, cecal and fecal microbial composition by sequencing the 16S rRNA gene V4 region. The results showed that the microbial community in the cecum was quite different from those in the duodenum and feces. The highest biodiversity and all differentially abundant taxa between the different efficiency groups were observed in the cecal microbial community with false discovery rate (FDR) <0...
March 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28328981/dysbiosis-and-compositional-alterations-with-aging-in-the-gut-microbiota-of-patients-with-heart-failure
#10
Takehiro Kamo, Hiroshi Akazawa, Wataru Suda, Akiko Saga-Kamo, Yu Shimizu, Hiroki Yagi, Qing Liu, Seitaro Nomura, Atsuhiko T Naito, Norifumi Takeda, Mutsuo Harada, Haruhiro Toko, Hidetoshi Kumagai, Yuichi Ikeda, Eiki Takimoto, Jun-Ichi Suzuki, Kenya Honda, Hidetoshi Morita, Masahira Hattori, Issei Komuro
Emerging evidence has suggested a potential impact of gut microbiota on the pathophysiology of heart failure (HF). However, it is still unknown whether HF is associated with dysbiosis in gut microbiota. We investigated the composition of gut microbiota in patients with HF to elucidate whether gut microbial dysbiosis is associated with HF. We performed 16S ribosomal RNA gene sequencing of fecal samples obtained from 12 HF patients and 12 age-matched healthy control (HC) subjects, and analyzed the differences in gut microbiota...
2017: PloS One
https://www.readbyqxmd.com/read/28320465/reduced-microbial-diversity-in-adult-survivors-of-childhood-acute-lymphoblastic-leukemia-and-microbial-associations-with-increased-immune-activation
#11
Ling Ling Chua, Reena Rajasuriar, Mohamad Shafiq Azanan, Noor Kamila Abdullah, Mei San Tang, Soo Ching Lee, Yin Ling Woo, Yvonne Ai Lian Lim, Hany Ariffin, P'ng Loke
BACKGROUND: Adult survivors of childhood cancers such as acute lymphoblastic leukemia (ALL) have health problems that persist or develop years after cessation of therapy. These late effects include chronic inflammation-related comorbidities such as obesity and type 2 diabetes, but the underlying cause is poorly understood. RESULTS: We compared the anal microbiota composition of adult survivors of childhood ALL (N = 73) with healthy control subjects (N = 61)...
March 20, 2017: Microbiome
https://www.readbyqxmd.com/read/28286571/we-are-not-alone-a-case-for-the-human-microbiome-in-extra-intestinal-diseases
#12
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/28281639/influence-of-dairy-by-product-waste-milk-on-the-microbiomes-of-different-gastrointestinal-tract-components-in-pre-weaned-dairy-calves
#13
Y F Deng, Y J Wang, Y Zou, A Azarfar, X L Wei, S K Ji, J Zhang, Z H Wu, S X Wang, S Z Dong, Y Xu, D F Shao, J X Xiao, K L Yang, Z J Cao, S L Li
The community structure of colonised bacteria in the gastrointestinal tracts (GITs) of pre-weaned calves is affected by extrinsic factors, such as the genetics and diet of the calves; however, the dietary impact is not fully understood and warrants further research. Our study revealed that a total of 6, 5, 2 and 10 bacterial genera showed biologically significant differences in the GITs of pre-weaned calves fed four waste-milk diets: acidified waste milk, pasteurised waste milk, untreated bulk milk, and untreated waste milk, respectively...
March 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28280715/enterotype-may-drive-the-dietary-associated-cardiometabolic-risk-factors
#14
Ana C F de Moraes, Gabriel R Fernandes, Isis T da Silva, Bianca Almeida-Pititto, Everton P Gomes, Alexandre da Costa Pereira, Sandra R G Ferreira
Analyses of typical bacterial clusters in humans named enterotypes may facilitate understanding the host differences in the cardiometabolic profile. It stills unknown whether the three previously described enterotypes were present in populations living below the equator. We examined how the identification of enterotypes could be useful to explain the dietary associations with cardiometabolic risk factors in Brazilian subjects. In this cross-sectional study, a convenience sample of 268 adults (54.2% women) reported their dietary habits and had clinical and biological samples collected...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28265505/key-bacterial-families-clostridiaceae-erysipelotrichaceae-and-bacteroidaceae-are-related-to-the-digestion-of-protein-and-energy-in-dogs
#15
Emma N Bermingham, Paul Maclean, David G Thomas, Nicholas J Cave, Wayne Young
BACKGROUND: Much of the recent research in companion animal nutrition has focussed on understanding the role of diet on faecal microbiota composition. To date, diet-induced changes in faecal microbiota observed in humans and rodents have been extrapolated to pets in spite of their very different dietary and metabolic requirements. This lack of direct evidence means that the mechanisms by which microbiota influences health in dogs are poorly understood. We hypothesised that changes in faecal microbiota correlate with physiological parameters including apparent macronutrient digestibility...
2017: PeerJ
https://www.readbyqxmd.com/read/28262770/fecal-bacterial-communities-in-treated-hiv-infected-individuals-on-two-antiretroviral-regimens
#16
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
#17
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/28251782/one-year-calorie-restriction-impacts-gut-microbial-composition-but-not-its-metabolic-performance-in-obese-adolescents
#18
Alicia Ruiz, Tomás Cerdó, Ruy Jáuregui, Dietmar H Pieper, Ascensión Marcos, Alfonso Clemente, Federico García, Abelardo Margolles, Manuel Ferrer, Cristina Campoy, Antonio Suárez
Recent evidence has disclosed a connection between gut microbial glycosidase activity and adiposity in obese. Here, we measured microbial α-glucosidase and β-galactosidase activities and sorted fluorescently labeled β-galactosidase containing (βGAL) microorganisms in faecal samples of eight lean and thirteen obese adolescents that followed a controlled calorie restriction program during one year. β-galactosidase is a highly distributed functional trait, mainly expressed by members of Blautia, Bacteroides, Alcaligenes, Acinetobacter and Propionibacterium...
March 2, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28249045/pili-like-proteins-of-akkermansia-muciniphila-modulate-host-immune-responses-and-gut-barrier-function
#19
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
#20
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
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