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Microbiome prebiotics

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https://www.readbyqxmd.com/read/28194099/gut-to-brain-dysbiosis-mechanisms-linking-western-diet-consumption-the-microbiome-and-cognitive-impairment
#1
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/28164854/the-microbiome-gut-brain-axis-in-health-and-disease
#2
REVIEW
Timothy G Dinan, John F Cryan
Gut microbes are capable of producing most neurotransmitters found in the human brain. Evidence is accumulating to support the view that gut microbes influence central neurochemistry and behavior. Irritable bowel syndrome is regarded as the prototypic disorder of the brain-gut-microbiota axis that can be responsive to probiotic therapy. Translational studies indicate that certain bacteria may have an impact on stress responses and cognitive functioning. Manipulating the gut microbiota with psychobiotics, prebiotics, or even antibiotics offers a novel approach to altering brain function and treating gut-brain axis disorders, such as depression and autism...
March 2017: Gastroenterology Clinics of North America
https://www.readbyqxmd.com/read/28134778/toward-a-personalized-approach-in-prebiotics-research
#3
Moul Dey
Recent characterization of the human microbiome and its influences on health have led to dramatic conceptual shifts in dietary bioactives research. Prebiotic foods that include many dietary fibers and resistant starches are perceived as beneficial for maintaining a healthy gut microbiota. This article brings forward some current perspectives in prebiotic research to discuss why reporting of individual variations in response to interventions will be important to discern suitability of prebiotics as a disease prevention tool...
January 26, 2017: Nutrients
https://www.readbyqxmd.com/read/28126594/microbiome-remodeling-via-the-montmorillonite-adsorption-excretion-axis-prevents-obesity-related-metabolic-disorders
#4
Pengfei Xu, Fan Hong, Jialin Wang, Yusheng Cong, Shu Dai, Sheng Wang, Jing Wang, Xi Jin, Fang Wang, Jin Liu, Yonggong Zhai
Obesity and its related metabolic disorders are closely correlated with gut dysbiosis. Montmorillonite is a common medicine used to treat diarrhea. We have previously found that dietary lipid adsorbent-montmorillonite (DLA-M) has an unexpected role in preventing obesity. The aim of this study was to further investigate whether DLA-M regulates intestinal absorption and gut microbiota to prevent obesity-related metabolic disorders. Here, we show that DLA-M absorbs free fatty acids (FFA) and endotoxins in vitro and in vivo...
January 18, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28119466/effects-of-the-dietary-protein-and-carbohydrate-ratio-on-gut-microbiomes-in-dogs-of-different-body-conditions
#5
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/28116928/assessment-of-the-synbiotic-properites-of-human-milk-oligosaccharides-and-bifidobacterium-longum-subsp-infantis-in-vitro-and-in-humanised-mice
#6
S Musilova, N Modrackova, P Hermanova, T Hudcovic, R Svejstil, V Rada, V Tejnecky, V Bunesova
The mode of delivery plays a crucial role in infant gastrointestinal tract colonisation, which in the case of caesarean section is characterised by the presence of clostridia and low bifidobacterial counts. Gut colonisation can be modified by probiotics, prebiotics or synbiotics. Human milk oligosaccharides (HMOs) are infant prebiotics that show a bifidogenic effect. Moreover, genome sequencing of Bifidobacterium longum subsp. infantis within the infant microbiome revealed adaptations for milk utilisation. This study aimed to evaluate the synbiotic effect of B...
January 24, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/28097073/handling-stress-may-confound-murine-gut-microbiota-studies
#7
Cary R Allen-Blevins, Xiaomeng You, Katie Hinde, David A Sela
BACKGROUND: Accumulating evidence indicates interactions between human milk composition, particularly sugars (human milk oligosaccharides or HMO), the gut microbiota of human infants, and behavioral effects. Some HMO secreted in human milk are unable to be endogenously digested by the human infant but are able to be metabolized by certain species of gut microbiota, including Bifidobacterium longum subsp. infantis (B. infantis), a species sensitive to host stress (Bailey & Coe, 2004). Exposure to gut bacteria like B...
2017: PeerJ
https://www.readbyqxmd.com/read/28029408/gut-microbiota-and-allergy-asthma-from-pathogenesis-to-new-therapeutic-strategies
#8
REVIEW
Y B Kang, Y Cai, H Zhang
Asthma and atopy, classically associated with hyper-activation of the T helper 2 (Th2) arm of adaptive immunity, are among the most common chronic illnesses worldwide. Emerging evidence relates atopy and asthma to the composition and function of gut microbiota composition. Moreover, certain gut microbial strains have been shown to inhibit or attenuate immune responses associated with chronic inflammation in experimental models. Although still a relatively nascent field of research, evidence to date suggests that the gut microbiome may represent fertile targets for prevention or management of allergic asthma and other diseases in which adaptive immune dysfunction is a prominent feature...
October 28, 2016: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/27997976/the-microbiome-what-will-the-future-hold
#9
Howard Paul Monsour, Eamonn M M Quigley
Current research on the human microbiome has opened our eyes to the intimate relationship that we have with the bacteria that populate our gastrointestinal tract and its potential relationship to health and disease. To date, clinical research on the microbiome has identified intriguing associations between an altered microbiome and disease states, but proven therapeutic applications have been very limited. The ingestion of prebiotics, probiotics, and/or synbiotics is appealing to the general public and has significant commercial value, but as yet, solid evidence for clinical efficacy in liver disease has been lacking due, in large part, to the paucity of high-quality clinical trials...
September 2016: Seminars in Liver Disease
https://www.readbyqxmd.com/read/27989793/community-metabolic-modeling-approaches-to-understanding-the-gut-microbiome-bridging-biochemistry-and-ecology
#10
REVIEW
Helena Mendes-Soares, Nicholas Chia
Interest in the human microbiome is at an all time high. The number of human microbiome studies is growing exponentially, as are reported associations between microbial communities and disease. However, we have not been able to translate the ever-growing amount of microbiome sequence data into better health. To do this, we need a practical means of transforming a disease-associated microbiome into a health-associated microbiome. This will require a framework that can be used to generate predictions about community dynamics within the microbiome under different conditions, predictions that can be tested and validated...
December 15, 2016: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/27974055/host-microbiome-interactions-in-human-type-2-diabetes-following-prebiotic-fibre-galacto-oligosaccharide-intake
#11
Camilla Pedersen, Edith Gallagher, Felicity Horton, Richard J Ellis, Umer Z Ijaz, Huihai Wu, Etana Jaiyeola, Onyinye Diribe, Thibaut Duparc, Patrice D Cani, Glenn R Gibson, Paul Hinton, John Wright, Roberto La Ragione, M Denise Robertson
Aberrant microbiota composition and function have been linked to several pathologies, including type 2 diabetes. In animal models, prebiotics induce favourable changes in the intestinal microbiota, intestinal permeability (IP) and endotoxaemia, which are linked to concurrent improvement in glucose tolerance. This is the first study to investigate the link between IP, glucose tolerance and intestinal bacteria in human type 2 diabetes. In all, twenty-nine men with well-controlled type 2 diabetes were randomised to a prebiotic (galacto-oligosaccharide mixture) or placebo (maltodextrin) supplement (5·5 g/d for 12 weeks)...
December 2016: British Journal of Nutrition
https://www.readbyqxmd.com/read/27924137/exercise-induced-stress-behavior-gut-microbiota-brain-axis-and-diet-a-systematic-review-for-athletes
#12
REVIEW
Allison Clark, Núria Mach
Fatigue, mood disturbances, under performance and gastrointestinal distress are common among athletes during training and competition. The psychosocial and physical demands during intense exercise can initiate a stress response activating the sympathetic-adrenomedullary and hypothalamus-pituitary-adrenal (HPA) axes, resulting in the release of stress and catabolic hormones, inflammatory cytokines and microbial molecules. The gut is home to trillions of microorganisms that have fundamental roles in many aspects of human biology, including metabolism, endocrine, neuronal and immune function...
2016: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/27922565/a-perspective-on-brain-gut-communication-the-american-gastroenterology-association-and-american-psychosomatic-society-joint-symposium-on-brain-gut-interactions-and-the-intestinal-microenvironment
#13
Olga C Aroniadis, Douglas A Drossman, Magnus Simren
BACKGROUND: Alterations in brain-gut communication and the intestinal microenvironment have been implicated in a variety of medical and neuropsychiatric diseases. Three central areas require basic and clinical research: (1) how the intestinal microenvironment interacts with the host immune system, central nervous system and enteric nervous system; (2) the role of the intestinal microenvironment in the pathogenesis of medical and neuropsychiatric disease; (3) the effects of diet, prebiotics, probiotics and fecal microbiota transplantation on the intestinal microenvironment and the treatment of disease...
January 17, 2017: Psychosomatic Medicine
https://www.readbyqxmd.com/read/27912759/intestinal-dysbiosis-and-allogeneic-hematopoietic-progenitor-cell-transplantation
#14
REVIEW
Vikram M Raghunathan, Iris Sheng, Seah H Lim
The intestinal microbiota is a diverse and dynamic ecosystem that is increasingly understood to play a vital role in human health. Hematopoietic stem cell transplant recipients undergo prolonged exposure to antimicrobials, chemotherapeutic agents, and immunosuppressants, resulting in profound shifts in the gut microbiome. A growing body of research has revealed the ways in which these microbiologic shifts shape immune modulation, affecting susceptibility to infections and graft-versus-host disease, the two major post-transplant complications in this population...
December 3, 2016: Journal of Translational Medicine
https://www.readbyqxmd.com/read/27910783/recent-advances-and-challenges-in-studies-of-control-of-cancer-stem-cells-and-the-gut-microbiome-by-the-trametes-derived-polysaccharopeptide-psp-review
#15
Joseph M Wu, Barbara B Doonan, Tze-Chen Hsieh, Qingyao Yang, Xiao-Tong Yang, Ming-Tat Ling
The medicinal mushroom Trametes versicolor has been well recognized for its activity in maintaining the general health of the population and in managing and treating human diseases in various cultures. Its use has been recently gaining acceptance and popularity in Western countries. The reported health benefits of T. versicolor led to a search for the identity of its bioactive ingredients. These efforts have resulted in the isolation of the polysaccharopeptide PSP from cultured mycelia of strain Cov-1, which expresses large amounts of PSP...
2016: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/27893069/new-medical-and-surgical-insights-into-neonatal-necrotizing-enterocolitis-a-review
#16
Brandy L Frost, Biren P Modi, Tom Jaksic, Michael S Caplan
Importance: Necrotizing enterocolitis (NEC) has long remained a significant cause of morbidity and mortality in neonatal intensive care units. While the mainstay of treatment for this devastating condition remains largely supportive, research efforts continue to be directed toward understanding pathophysiology as well as how best to approach surgical management when indicated. Observations: In this review, we first examine recent medical observations, including overviews on the microbiome and a brief review of the use of probiotics...
January 1, 2017: JAMA Pediatrics
https://www.readbyqxmd.com/read/27892611/towards-a-bacterial-treatment-for-armpit-malodour
#17
Chris Callewaert, Jo Lambert, Tom Van de Wiele
Axillary malodour is a frustrating condition for many people. It can lead to significant discomforts and various psychological effects. The underarm microbiome generally plays a major role in axillary malodour formation. Not only the bacteria on the armpit epidermis, but especially those living in the sweat glands, sweat pores and hair follicles play a pivotal role in malodour development. In order to treat underarm malodour, this viewpoint paper envisions a bacterial treatment. Replacing the autochthonous malodour causing microbiome with a non-odour causing microbiome, through an armpit bacterial transplantation or direct application of probiotics/non-odour causing bacteria could resolve the condition...
November 28, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27872611/hypocholesterolemic-and-prebiotic-effects-of-a-whole-grain-oat-based-granola-breakfast-cereal-in-a-cardio-metabolic-at-risk-population
#18
Michael L Connolly, Xenofon Tzounis, Kieran M Tuohy, Julie A Lovegrove
Meta-analyses of randomized controlled trials (RTC) have confirmed the hypocholesterolaemic effect of oats and oat based fibers. However, the mechanisms by which oats or oat fractions lower cholesterol is not totally clear. Recognizing the important role of the gut microbiome in metabolism and metabolic disease risk, we examined the impact of whole grain oat Granola (WGO) on the human gut microbiota and cardio-metabolic risk factors using a randomized crossover dietary intervention in at risk individuals (ClinicalTrials...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27864534/microbiome-and-nutrition-in-autism-spectrum-disorder-current-knowledge-and-research-needs
#19
Kirsten Berding, Sharon M Donovan
Autism spectrum disorder (ASD) is the fastest growing neurodevelopmental disorder in the United States. Besides genetic risks, environmental factors have been suggested to contribute to the increase in ASD diagnosis over the past decade. Several studies have reported abnormalities in microbiota composition and differences in microbial metabolites in children with ASD. Gastrointestinal discomfort is commonly reported in children with ASD. Additionally, food selectivity and picky eating patterns are commonly reported...
December 2016: Nutrition Reviews
https://www.readbyqxmd.com/read/27808595/nutrition-and-the-gut-microbiome-in-the-elderly
#20
Nuria Salazar, Lorena Valdés-Varela, Sonia González, Miguel Gueimonde, Clara G de Los Reyes-Gavilán
The gut microbiota is the assembly of microorganisms living in our intestine and their genomes are known as the microbiome. The correct composition and functionality of this microbiome is essential for maintaining a "healthy status." Aging is related to changes in the gut microbiota which are frequently associated with physiological modifications of the gastrointestinal tract, as well as, to changes in dietary patterns, together with a concomitant decline in cognitive and immune function, all together contributing to frailty...
November 3, 2016: Gut Microbes
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