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Probiotic AND METABOLISM

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https://www.readbyqxmd.com/read/28215310/review-of-the-mechanisms-of-probiotic-actions-in-the-prevention-of-colorectal-cancer
#1
REVIEW
Sandra A Dos Reis, Lisiane L da Conceição, Nathane P Siqueira, Damiana D Rosa, Letícia L da Silva, Maria do Carmo G Peluzio
The purpose of this review is to discuss the potential mechanisms of probiotics action in colorectal cancer prevention. In this regard, the composition of the intestinal microbiota is considered as an important risk factor in the development of colorectal cancer, and probiotics are able to positively modulate the composition of this microbiota. Studies have shown that the regular consumption of probiotics could prevent the development of colorectal cancer. In this respect, in vitro and experimental studies suggest some potential mechanisms responsible for this anticarcinogenic action...
January 2017: Nutrition Research
https://www.readbyqxmd.com/read/28212267/effects-of-dietary-yogurt-on-the-healthy-human-gastrointestinal-gi-microbiome
#2
Daniel J Lisko, G Patricia Johnston, Carl G Johnston
The gastrointestinal (GI) tract performs key functions that regulate the relationship between the host and the microbiota. Research has shown numerous benefits of probiotic intake in the modulation of immune responses and human metabolic processes. However, unfavorable attention has been paid to temporal changes of the microbial composition and diversity of the GI tract. This study aimed to investigate the effects of yogurt consumption on the GI microbiome bacteria community composition, structure and diversity during and after a short-term period (42 days)...
February 15, 2017: Microorganisms
https://www.readbyqxmd.com/read/28210076/potential-role-of-the-gut-microbiota-in-synthetic-torpor-and-therapeutic-hypothermia
#3
REVIEW
Claudia Sisa, Silvia Turroni, Roberto Amici, Patrizia Brigidi, Marco Candela, Matteo Cerri
Therapeutic hypothermia is today used in several clinical settings, among them the gut related diseases that are influenced by ischemia/reperfusion injury. This perspective paved the way to the study of hibernation physiology, in natural hibernators, highlighting an unexpected importance of the gut microbial ecosystem in hibernation and torpor. In natural hibernators, intestinal microbes adaptively reorganize their structural configuration during torpor, and maintain a mutualistic configuration regardless of long periods of fasting and cold temperatures...
January 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28207855/novel-approaches-for-the-taxonomic-and-metabolic-characterization-of-lactobacilli-integration-of-16s-rrna-gene-sequencing-with-maldi-tof-ms-and-1h-nmr
#4
Claudio Foschi, Luca Laghi, Carola Parolin, Barbara Giordani, Monica Compri, Roberto Cevenini, Antonella Marangoni, Beatrice Vitali
Lactobacilli represent a wide range of bacterial species with several implications for the human host. They play a crucial role in maintaining the ecological equilibrium of different biological niches and are essential for fermented food production and probiotic formulation. Despite the consensus about the 'health-promoting' significance of Lactobacillus genus, its genotypic and phenotypic characterization still poses several difficulties. The aim of this study was to assess the integration of different approaches, genotypic (16S rRNA gene sequencing), proteomic (MALDI-TOF MS) and metabolomic (1H-NMR), for the taxonomic and metabolic characterization of Lactobacillus species...
2017: PloS One
https://www.readbyqxmd.com/read/28194099/gut-to-brain-dysbiosis-mechanisms-linking-western-diet-consumption-the-microbiome-and-cognitive-impairment
#5
REVIEW
Emily E Noble, Ted M Hsu, Scott E Kanoski
Consumption of a Western Diet (WD) that is high in saturated fat and added sugars negatively impacts cognitive function, particularly mnemonic processes that rely on the integrity of the hippocampus. Emerging evidence suggests that the gut microbiome influences cognitive function via the gut-brain axis, and that WD factors significantly alter the proportions of commensal bacteria in the gastrointestinal tract. Here we review mechanisms through which consuming a WD negatively impacts neurocognitive function, with a particular focus on recent evidence linking the gut microbiome with dietary- and metabolic-associated hippocampal impairment...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28188340/development-and-validation-of-a-new-dynamic-in-vitro-model-of-the-piglet-colon-pigutivm-application-to-the-study-of-probiotics
#6
Mickaël Alain Fleury, Olivier Le Goff, Sylvain Denis, Frédérique Chaucheyras-Durand, Eric Jouy, Isabelle Kempf, Monique Alric, Stéphanie Blanquet-Diot
For ethical, technical, regulatory, and cost reasons, in vitro methods are increasingly used as an alternative to in vivo experimentations. The aim of the present study was to validate, according to in vivo data in living animals, a new in vitro model of the piglet colon, the PigutIVM, under both control conditions and antibiotic disturbance by the widely used colistin. The PigutIVM reproduces the main biotic and abiotic parameters of the piglet colon: temperature, pH, retention time, supply of ileal effluents, complex, and metabolically active microbiota and self-maintained anaerobiosis...
February 10, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28178201/rett-syndrome-a-focus-on-gut-microbiota
#7
Elisa Borghi, Francesca Borgo, Marco Severgnini, Miriam Nella Savini, Maria Cristina Casiraghi, Aglaia Vignoli
Rett syndrome (RTT) is an X-linked neurodevelopmental disorder affecting 1 in 10,000 live female births. Changes in microbiota composition, as observed in other neurological disorders such as autism spectrum disorders, may account for several symptoms typically associated with RTT. We studied the relationship between disease phenotypes and microbiome by analyzing diet, gut microbiota, and short-chain fatty acid (SCFA) production. We enrolled eight RTT patients and 10 age- and sex-matched healthy women, all without dietary restrictions...
February 7, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28164853/impact-of-antibiotics-on-necrotizing-enterocolitis-and-antibiotic-associated-diarrhea
#8
REVIEW
Michael A Silverman, Liza Konnikova, Jeffrey S Gerber
Antibiotic treatment alters the composition and metabolic function of the intestinal microbiota. These alterations may contribute to the pathogenesis of necrotizing enterocolitis (NEC) and antibiotic-associated diarrhea (AAD). Recent studies are beginning to unravel the contribution of specific groups of microbes and their metabolic pathways to these diseases. Probiotics or other microbiota-targeted therapies may provide effect strategies to prevent and treat NEC and AAD.
March 2017: Gastroenterology Clinics of North America
https://www.readbyqxmd.com/read/28161414/dairy-propionibacteria-prevent-the-proliferative-effect-of-plant-lectins-on-sw480%C3%A2-cells-and-protect-the-metabolic-activity-of-the-intestinal-microbiota-in%C3%A2-vitro
#9
Gabriela Zárate, Gabriel D Sáez, Adriana Pérez Chaia
Plant lectins are specific carbohydrate-binding proteins that are widespread in legumes such as beans and pulses, seeds, cereals, and many plants used as farm feeds. They are highly resistant to cooking and digestion, reaching the intestinal lumen and/or blood circulation with biological activity. Since many legume lectins trigger harmful local and systemic reactions after their binding to the mucosal surface, these molecules are generally considered anti-nutritive and/or toxic substances. In the gut, specific cell receptors and bacteria may interact with these dietary components, leading to changes in intestinal physiology...
February 1, 2017: Anaerobe
https://www.readbyqxmd.com/read/28139139/roseburia-spp-a-marker-of-health
#10
Zohreh Tamanai-Shacoori, Imen Smida, Latifa Bousarghin, Olivier Loreal, Vincent Meuric, Shao Bing Fong, Martine Bonnaure-Mallet, Anne Jolivet-Gougeon
The genus Roseburia consists of obligate Gram-positive anaerobic bacteria that are slightly curved, rod-shaped and motile by means of multiple subterminal flagella. It includes five species: Roseburia intestinalis, R. hominis, R. inulinivorans, R. faecis and R. cecicola. Gut Roseburia spp. metabolize dietary components that stimulate their proliferation and metabolic activities. They are part of commensal bacteria producing short-chain fatty acids, especially butyrate, affecting colonic motility, immunity maintenance and anti-inflammatory properties...
February 2017: Future Microbiology
https://www.readbyqxmd.com/read/28133483/assessment-of-resistance-and-bioremediation-ability-of-lactobacillus-strains-to-lead-and-cadmium
#11
Anna V Kirillova, Anna A Danilushkina, Denis S Irisov, Nataliya L Bruslik, Rawil F Fakhrullin, Yuri A Zakharov, Vladimir S Bukhmin, Dina R Yarullina
Cadmium (Cd) and lead (Pb) are heavy metals, important environmental pollutants, and potent toxicants to organism. Lactic acid bacteria (LAB) have been reported to remove Cd and Pb from solutions and therefore represent a useful tool for decontamination of food and beverages from heavy metals. Heavy metal ion binding by LAB was reported as metabolism-independent surface process. In this work ten Lactobacillus strains were investigated with respect to hydrophobicity, Lewis acid-base, and electrostatic properties of their outer cell surface in order to characterize their Cd and Pb removal capacity...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28129335/reduction-of-aflatoxin-b1-toxicity-by-lactobacillus-plantarum-c88-a-potential-probiotic-strain-isolated-from-chinese-traditional-fermented-food-tofu
#12
Li Huang, Cuicui Duan, Yujuan Zhao, Lei Gao, Chunhua Niu, Jingbo Xu, Shengyu Li
In this study, we investigated the potential of Lactobacillus plantarum isolated from Chinese traditional fermented foods to reduce the toxicity of aflatoxin B1 (AFB1), and its subsequent detoxification mechanism. Among all the investigated L. plantarum strains, L. plantarum C88 showed the strongest AFB1 binding capacity in vitro, and was orally administered to mice with liver oxidative damage induced by AFB1. In the therapy groups, the mice that received L. plantarum C88, especially heat-killed L. plantarum C88, after a single dose of AFB1 exposure, showed an increase in unabsorbed AFB1 in the feces...
2017: PloS One
https://www.readbyqxmd.com/read/28125348/anthocyanins-and-flavanones-are-more-bioavailable-than-previously-perceived-a-review-of-recent-evidence
#13
Colin D Kay, Gema Pereira-Caro, Iziar A Ludwig, Michael N Clifford, Alan Crozier
This review considers recent investigations on the bioavailability of anthocyanins and flavanones. Both flavonoids are significant dietary components and are considered to be poorly bioavailable, as only low levels of phase II metabolites appear in the circulatory system and are excreted in urine. However, when lower molecular weight phenolic and aromatic ring-fission catabolites, produced primarily by the action of the colonic microbiota, are taken into account, it is evident that anthocyanins and flavanones are much more bioavailable than previously envisaged...
January 11, 2017: Annual Review of Food Science and Technology
https://www.readbyqxmd.com/read/28119466/effects-of-the-dietary-protein-and-carbohydrate-ratio-on-gut-microbiomes-in-dogs-of-different-body-conditions
#14
Qinghong Li, Christian L Lauber, Gail Czarnecki-Maulden, Yuanlong Pan, Steven S Hannah
: Obesity has become a health epidemic in both humans and pets. A dysbiotic gut microbiota has been associated with obesity and other metabolic disorders. High-protein, low-carbohydrate (HPLC) diets have been recommended for body weight loss, but little is known about their effects on the canine gut microbiome. Sixty-three obese and lean Labrador retrievers and Beagles (mean age, 5.72 years) were fed a common baseline diet for 4 weeks in phase 1, followed by 4 weeks of a treatment diet, specifically, the HPLC diet (49...
January 24, 2017: MBio
https://www.readbyqxmd.com/read/28119147/cellular-and-transcriptomic-response-to-treatment-with-the-probiotic-candidate-vibrio-lentus-in-gnotobiotic-sea-bass-dicentrarchus-labrax-larvae
#15
Marlien Schaeck, Felipe E Reyes-López, Eva Vallejos-Vidal, Jolien Van Cleemput, Luc Duchateau, Wim Van den Broeck, Lluis Tort, Annemie Decostere
The present study aimed at evaluating the cellular and transcriptomic responses induced by the probiotic candidate Vibrio lentus with gnotobiotic European sea bass (Dicentrarchus labrax, Linnaeus 1785) larvae. For this, a histomorphological analysis was performed using the terminal deoxynucleotidyltransferase-mediated dUTP nick end labeling (TUNEL) and the anti-proliferating cell nuclear antigen (PCNA) assay. In addition, a global transcriptomic approach was adopted to study the whole body mRNA changes upon administration of V...
January 21, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28115383/mechanistic-study-of-water-insoluble-yeast-glucans-utilization-in-bifidobacterium-breve-strain-jcm1192
#16
Hoi Yee Keung, Tsz Kai Li, Lok To Sham, Man Kit Cheung, Peter Chi Keung Cheung, Hoi Shan Kwan
: Bifidobacteria exert beneficial effects on hosts and are extensively used as probiotics. However, due to their genetic inaccessibility, little is known about their mechanism of carbohydrate utilization and regulation. Bifidobacterium breve strain JCM1192 can grow on water insoluble yeast cell wall glucans (YCWG), which are recently considered as potential prebiotics. From the result of (1)H NMR spectrometry, the YCWG were composed of highly branched (1→3)(1→6)-β-glucan and (1→4)(1→6)-α-glucan...
January 23, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28111773/potential-prebiotic-properties-of-cashew-apple-anacardium-occidentale-l-agro-industrial-byproduct-on-lactobacillus-species
#17
Francisca Nayara Dantas Duarte, Jéssica Bezerra Rodrigues, Maiara da Costa Lima, Marcos Dos Santos Lima, Maria Teresa Bertoldo Pacheco, Maria Manuela Estevez Pintado, Jailane de Souza Aquino, Evandro Leite de Souza
BACKGROUND: The prebiotic effects of a cashew apple (Anacardium occidentale L.) agro-industrial byproduct powder (CAP) on different potentially probiotic Lactobacillus strains, namely L. acidophilus LA-05, L. casei L-26 and L. paracasei L-10, was assessed using in vitro experimental models. For this, the growth of the Lactobacillus strains when cultivated in a broth containing CAP (20 or 30 g L(-1) ), glucose (20 g L(-1) ) or fructooligosaccharides (FOS) (20 g L(-1) ) were monitored during 48 h; the prebiotic activity scores of CAP were determined; and the changes in pH values, production of organic acids and consumption of sugars in growth media were verified...
January 23, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28109835/gut-microbiota-a-player-in-aging-and-a-target-for-anti-aging-intervention
#18
REVIEW
Alexander M Vaiserman, Alexander K Koliada, Francesco Marotta
Aging-associated alterations in composition, diversity and functional features of intestinal microbiota are well-described in the modern literature. They are suggested to be caused by an age-related decline in immune system functioning (immunosenescence) and a low-grade chronic inflammation (inflammaging), which accompany many aging-associated pathologies. The microbiota-targeted dietary and probiotic interventions have been shown to favorably affect the host health and aging by an enhancement of antioxidant activity, improving immune homeostasis, suppression of chronic inflammation, regulation of fat deposition and metabolism and prevention of insulin resistance...
January 18, 2017: Ageing Research Reviews
https://www.readbyqxmd.com/read/28105862/structural-data-and-immunomodulatory-properties-of-a-water-soluble-heteroglycan-extracted-from-the-mycelium-of-an-italian-isolate-of-ganoderma-lucidum
#19
Raffaele Carrieri, Rosanna Manco, Daniela Sapio, Marco Iannaccone, Andrea Fulgione, Marina Papaianni, Bruna de Falco, Laura Grauso, Paola Tarantino, Flora Ianniello, Virginia Lanzotti, Ernesto Lahoz, Rosanna Capparelli
Mushrooms produce a wide range of bioactive polysaccharides, different from each other in chemical structure and biological effects. In the last years, the idea to develop functional foods or drugs containing fungal polysaccharides is attracting great attention. Fruiting bodies of Basidiomycetes Ganoderma lucidum are commonly used in Oriental medicine to treat several disorders. G. lucidum polysaccharides - mainly β-glucans and heteroglycans - have numerous biological properties such as antitumour and immunomodulatory activities...
January 20, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28105081/cross-feeding-of-glucose-metabolism-byproducts-of-escherichia-coli-human-gut-isolates-and-probiotic-strains-affect-survival-of-vibrio-cholerae
#20
Chirantana Sengupta, Manjula Ekka, Saurabh Arora, Prashant D Dhaware, Rukhsana Chowdhury, Saumya Raychaudhuri
Vibrio cholerae converts glucose into either acid or the neutral end product acetoin and its survival in carbohydrate enriched media is linked to the nature of the byproducts produced. It has been demonstrated in this study that Escherichia coli strain isolated from the gut of healthy human volunteers and the commonly used probiotic E. coli Nissle strain that metabolize glucose to acidic byproducts drastically reduce the survival of V. cholerae strains irrespective of their glucose sensitivity and acetoin production status...
2017: Gut Pathogens
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