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Microbiota human health

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https://www.readbyqxmd.com/read/29660405/microbiome-mediated-bile-acid-modification-role-in-intestinal-drug-absorption-and-metabolism
#1
REVIEW
Elaine F Enright, Brendan T Griffin, Cormac G M Gahan, Susan A Joyce
Once regarded obscure and underappreciated, the gut microbiota (the microbial communities colonizing the gastrointestinal tract) is gaining recognition as an influencer of many aspects of human health. Also increasingly apparent is the breadth of interindividual variation in these co-evolved microbial-gut associations, presenting novel quests to explore implications for disease and therapeutic response. In this respect, the unearthing of the drug-metabolizing capacity of the microbiota has provided impetus for the integration of microbiological and pharmacological research...
April 13, 2018: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29659916/human-gut-microbiota-predicts-susceptibility-to-vibrio-cholerae-infection
#2
Firas S Midani, Ana A Weil, Fahima Chowdhury, Yasmin A Begum, Ashraful I Khan, Meti D Debela, Heather K Durand, Aspen T Reese, Sai N Nimmagadda, Justin D Silverman, Crystal N Ellis, Edward T Ryan, Stephen B Calderwood, Jason B Harris, Firdausi Qadri, Lawrence A David, Regina C LaRocque
Background: Cholera is a public health problem worldwide and the risk factors for infection are only partially understood. Methods: We prospectively studied household contacts of cholera patients to compare those who were infected with those who were not. We constructed predictive machine learning models of susceptibility using baseline gut microbiota data. We identified bacterial taxa associated with susceptibility to Vibrio cholerae infection and tested these taxa for interactions with V...
April 12, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29651421/when-the-nose-doesn-t-know-canine-olfactory-function-associated-with-health-management-and-potential-links-to-microbiota
#3
REVIEW
Eileen K Jenkins, Mallory T DeChant, Erin B Perry
The impact of health, management, and microbiota on olfactory function in canines has not been examined in review. The most important characteristic of the detection canine is its sense of smell. Olfactory receptors are primarily located on the ethmoturbinates of the nasal cavity. The vomeronasal organ is an additional site of odor detection that detects chemical signals that stimulate behavioral and/or physiological changes. Recent advances in the genetics of olfaction suggest that genetic changes, along with the unique anatomy and airflow of the canine nose, are responsible for the macrosmia of the species...
2018: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/29651010/dietary-supplementation-with-flaxseed-meal-and-oat-hulls-modulates-intestinal-histomorphometric-characteristics-digesta-and-mucosa-associated-microbiota-in-pigs
#4
S P Ndou, H M Tun, E Kiarie, M C Walsh, E Khafipour, C M Nyachoti
The establishment of a healthy gastrointestinal milieu may not only offer an opportunity to reduce swine production costs but could also open the way for a lifetime of human health improvement. This study investigates the effects of feeding soluble fibre from flaxseed meal-containing diet (FM) and insoluble fibre from oat hulls-containing diet (OH) on histomorphological characteristics, digesta- and mucosa-associated microbiota and their associations with metabolites in pig intestines. In comparison with the control (CON) and OH diets, the consumption of FM increased (P < 0...
April 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29649123/phytochemical-properties-and-nutrigenomic-implications-of-yacon-as-a-potential-source-of-prebiotic-current-evidence-and-future-directions
#5
REVIEW
Yang Cao, Zheng Feei Ma, Hongxia Zhang, Yifan Jin, Yihe Zhang, Frank Hayford
The human gut is densely populated with diverse microbial communities that are essential to health. Prebiotics and fiber have been shown to possess the ability to modulate the gut microbiota. One of the plants being considered as a potential source of prebiotic is yacon. Yacon is an underutilized plant consumed as a traditional root-based fruit in South America. Yacon mainly contains fructooligosaccharides (FOS) and inulin. Therefore, it has bifidogenic benefits for gut health, because FOS are not easily broken down by digestive enzymes...
April 12, 2018: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/29644870/a-novel-polyphenolic-prebiotic-and-probiotic-formulation-have-synergistic-effects-on-the-gut-microbiota-influencing-drosophila-melanogaster-physiology
#6
Susan Westfall, Nikita Lomis, Satya Prakash
The gut microbiota is a vast community of synergistic bacterial species providing health benefits to the host. Imbalances in the gut microbiota (dysbiosis) due to diet, antibiotic use, age and stress contribute to disease development including diabetes, obesity, colon cancer, inflammatory bowel disease, inflammaging and neurodegeneration. Fortunately, a probiotic regime with a diet rich in prebiotics may reverse dysbiosis promoting health and wellness in age. The current study designs, optimizes and tests a novel probiotic and synbiotic formulation consisting of three metabolically active probiotics Lactobacillus plantarum, Lactobacillus fermentum and Bifidobacteria infantis together with a novel polyphenol-rich prebiotic, Triphala...
April 12, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29643280/molecular-diversity-of-the-faecal-microbiota-of-toy-poodles-in-japan
#7
Tsutomu Omatsu, Miki Omura, Yukie Katayama, Toru Kimura, Maho Okumura, Atsushi Okumura, Yoshiteru Murata, Tetsuya Mizutani
The intestinal microbiota was revealed with the recent advances in molecular techniques, such as high-throughput sequencing analysis. As a result, the microbial changes are thought to influence the health of humans and animals and such changes are affected by several factors including diet, genetics, age, sex, and diseases. Similar studies are being conducted in dogs, and the knowledge of intestinal microbiota in dogs is expanding. Nonetheless, basic information on intestinal microbiota in dogs is less than that of humans...
April 11, 2018: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29642622/colibactin-more-than-a-new-bacterial-toxin
#8
REVIEW
Tiphanie Faïs, Julien Delmas, Nicolas Barnich, Richard Bonnet, Guillaume Dalmasso
Cyclomodulins are bacterial toxins that interfere with the eukaryotic cell cycle. A new cyclomodulin called colibactin, which is synthetized by the pks genomic island, was discovered in 2006. Despite many efforts, colibactin has not yet been purified, and its structure remains elusive. Interestingly, the pks island is found in members of the family Enterobacteriaceae (mainly Escherichia coli and Klebsiella pneumoniae ) isolated from different origins, including from intestinal microbiota, septicaemia, newborn meningitis, and urinary tract infections...
April 10, 2018: Toxins
https://www.readbyqxmd.com/read/29629422/can-diet-influence-our-health-by-altering-intestinal-microbiota-derived-fecal-metabolites
#9
Qiang Lyu, Cheng-Chih Hsu
The human gastrointestinal tract harbors a diverse, highly mutualistic microbial flora which could produce a myriad of specialized metabolites. These specialized metabolites are the chemical cellphones that gut microflora use to communicate with their human host and could potentially be used to cure diseases. Chemical compounds in diet also shape the gut flora. In order to understand which and how the gut microbe-derived specialized metabolites affect human health, the "gut microbiome-metabolomic-human health axis" is thus proposed...
March 2018: MSystems
https://www.readbyqxmd.com/read/29625981/a-consistent-and-predictable-commercial-broiler-chicken-bacterial-microbiota-in-antibiotic-free-production-displays-strong-correlations-with-performance
#10
Timothy J Johnson, Bonnie P Youmans, Sally Noll, Carol Cardona, Nicholas P Evans, T Peter Karnezos, John M Ngunjiri, Michael C Abundo, Chang-Won Lee
Defining the baseline bacterial microbiome is critical towards understanding its relationship with health and disease. In broiler chickens, the core microbiome and its possible relationships with health and disease have been difficult to define due to high variability between birds and flocks. Presented are data from a large, comprehensive microbiota-based study in commercial broilers. The primary goals of this study included understanding what constitutes the core bacterial microbiota in the broiler gastrointestinal, respiratory, and barn environments; how these core players change across age, geography, and time; and which bacterial taxa correlate with enhanced bird performance in antibiotic-free flocks...
April 6, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29624599/a-snapshot-of-gut-microbiota-of-an-adult-urban-population-from-western-region-of-india
#11
Disha Tandon, Mohammed Monzoorul Haque, Saravanan R, Shafiq Shaikh, Sriram P, Ashok Kumar Dubey, Sharmila S Mande
The human gut microbiome contributes to a broad range of biochemical and metabolic functions that directly or indirectly affect human physiology. Several recent studies have indicated that factors like age, geographical location, genetic makeup, and individual health status significantly influence the diversity, stability, and resilience of the gut microbiome. Of the mentioned factors, geographical location (and related dietary/socio-economic context) appears to explain a significant portion of microbiome variation observed in various previously conducted base-line studies on human gut microbiome...
2018: PloS One
https://www.readbyqxmd.com/read/29623708/-gut-microbiota-its-development-and-relation-to-certain-diseases
#12
Hana Kiňová Sepová, Boris Dudík, Andrea Bilková
Coexistence of humans with microorganisms is well known for a long time. Besides the association with infectious diseases, personal microbiota is important for human health, possibly for some non-infectious diseases. Colonization of the human body with appropriate microorganisms after delivery is essential for physiological immune system maturation and also has an influence on central nervous system development. The composition of the gut microbiota is affected by the mode of delivery, early life nutrition and last but not least by lifestyle and drug, especially antibiotics intake...
2018: Ceská a Slovenská Farmacie
https://www.readbyqxmd.com/read/29623674/current-state-of-knowledge-on-implications-of-gut-microbiome-for-surgical-conditions
#13
Edmund B Chen, Cori Cason, Jack A Gilbert, Karen J Ho
The role of the microbiome in human health has become a central tenant of current medical research, infiltrating a diverse disciplinary base whereby microbiology, computer science, ecology, gastroenterology, immunology, neurophysiology and psychology, metabolism, and cardiovascular medicine all intersect. Traditionally, commensal gut microbiota have been assumed to play a significant role only in the metabolic processing of dietary nutrients and host metabolites, the fortification of gut epithelial barrier function, and the development of mucosal immunity...
April 5, 2018: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/29621737/time-for-food-the-impact-of-diet-on-gut-microbiota-and-human-health
#14
REVIEW
Na Zhang, Zhongjie Ju, Tao Zuo
There is growing recognition of the role of diet on modulating the composition and metabolic activity of the human gut microbiota, which in turn influence health. Dietary ingredients and food additives have a substantial impact on the gut microbiota and hence affect human health. Updates on current understanding of the gut microbiota in diseases and metabolic disorders are addressed in this review, providing insights into how this can be transferred from bench to bench side as gut microbes are integrated with food...
February 5, 2018: Nutrition
https://www.readbyqxmd.com/read/29621590/vancomycin-resistance-in-enterococcus-faecium-isolated-from-danish-chicken-meat-is-located-on-a-pvef4-like-plasmid-persisting-in-poultry-for-18-years
#15
Helena Leinweber, Sulaiman M I Alotaibi, Søren Overballe-Petersen, Frank Hansen, Henrik Hasman, Valeria Bortolaia, Anette M Hammerum, Hanne Ingmer
The occurrence of vancomycin-resistant Enterococcus faecium (VREfm) in food has public health relevance since foodborne VREfm may colonize the gut of consumers and transfer vancomycin resistance genes to the indigenous gut microbiota. Therefore, we determined occurrence and elucidated genetic traits of VREfm in Danish retail chicken meat. Three out of 40 samples (7.5%) from two slaughterhouses yielded VREfm (vancomycin MIC > 32mg/L). This is the first report of VREfm in Danish retail poultry meat since 2010 (DANMAP)...
April 2, 2018: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/29616501/effectiveness-of-omega-3-polyunsaturated-fatty-acids-against-microbial-pathogens
#16
Warren Chanda, Thomson P Joseph, Xue-Fang Guo, Wen-Dong Wang, Min Liu, Miza S Vuai, Arshad A Padhiar, Min-Tao Zhong
Microorganisms provide both beneficial and harmful effects to human beings. Beneficial effects come from the symbiotic relationship that exists between humans and microbiota, but then several human illnesses have turned some friendly microbes into opportunistic pathogens, causing several microbial-related diseases. Various efforts have been made to create and utilize antimicrobial agents in the treatment and prevention of these infections, but such efforts have been hampered by the emergence of antimicrobial resistance...
2018: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/29616322/inter-individual-variability-in-the-production-of-flavan-3-ol-colonic-metabolites-preliminary-elucidation-of-urinary-metabotypes
#17
Pedro Mena, Iziar A Ludwig, Virginia B Tomatis, Animesh Acharjee, Luca Calani, Alice Rosi, Furio Brighenti, Sumantra Ray, Julian L Griffin, Les J Bluck, Daniele Del Rio
PURPOSE: There is much information on the bioavailability of (poly)phenolic compounds following acute intake of various foods. However, there are only limited data on the effects of repeated and combined exposure to specific (poly)phenol food sources and the inter-individual variability in their bioavailability. This study evaluated the combined urinary excretion of (poly)phenols from green tea and coffee following daily consumption by healthy subjects in free-living conditions. The inter-individual variability in the production of phenolic metabolites was also investigated...
April 3, 2018: European Journal of Nutrition
https://www.readbyqxmd.com/read/29616010/outer-membrane-vesicles-from-probiotic-and-commensal-escherichia-coli-activate-nod1-mediated-immune-responses-in-intestinal-epithelial-cells
#18
María-Alexandra Cañas, María-José Fábrega, Rosa Giménez, Josefa Badia, Laura Baldomà
Gut microbiota plays a critical role in maintaining human intestinal homeostasis and host health. Bacterial extracellular vesicles are key players in bacteria-host communication, as they allow delivery of effector molecules into the host cells. Outer membrane vesicles (OMVs) released by Gram-negative bacteria carry many ligands of pattern recognition receptors that are key components of innate immunity. NOD1 and NOD2 cytosolic receptors specifically recognize peptidoglycans present within the bacterial cell wall...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29615850/interplay-between-the-gut-brain-axis-obesity-and-cognitive-function
#19
REVIEW
Ana Agustí, Maria P García-Pardo, Inmaculada López-Almela, Isabel Campillo, Michael Maes, Marina Romaní-Pérez, Yolanda Sanz
Obesity continues to be one of the major public health problems due to its high prevalence and co-morbidities. Common co-morbidities not only include cardiometabolic disorders but also mood and cognitive disorders. Obese subjects often show deficits in memory, learning and executive functions compared to normal weight subjects. Epidemiological studies also indicate that obesity is associated with a higher risk of developing depression and anxiety, and vice versa . These associations between pathologies that presumably have different etiologies suggest shared pathological mechanisms...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29614050/exposure-to-formaldehyde-perturbs-the-mouse-gut-microbiome
#20
Junhui Guo, Yun Zhao, Xingpeng Jiang, Rui Li, Hao Xie, Leixin Ge, Bo Xie, Xu Yang, Luoping Zhang
Exposure to Formaldehyde (FA) results in many pathophysiological symptoms, however the underlying mechanisms are not well understood. Given the complicated modulatory role of intestinal microbiota on human health, we hypothesized that interactions between FA and the gut microbiome may account for FA's toxicity. Balb/c mice were allocated randomly to three groups: a control group, a methanol group (0.1 and 0.3 ng/mL MeOH subgroups), and an FA group (1 and 3 ng/mL FA subgroups). Groups of either three or six mice were used for the control or experiment...
April 3, 2018: Genes
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