Download or read book Modeling Effects of Diet on Human Gut Microbiota written by Richard Thomas Agans and published by . This book was released on 2016 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: The human gut microbiota is integrally involved in the metabolism of nutrients contained within the human diet. Studies into human nutrition have primarily been carried out using human and animal models. These studies are extremely important in our understanding of human nutrition, however, suffer from inherent limitations including unique microbial compositions between individuals, compliance in human studies, inability to carry out mechanistic studies, and inability to interrogate proximal regions of the gut without applying invasive techniques. In vitro gut simulator systems circumvent many of these limitations in animal and human models by allowing control of gut environmental conditions, decreasing variability observed between subjects, and enabling mechanistic investigations and interrogations of inaccessible regions of the gut. In this work a custom biofermentation system, the human gut simulator, was designed, validated, utilizing previously reported gut conditions, capable of temperature, pH, and atmosphere regulation, nutrient transit, and it allows real-time sampling of vessel contents or addition of exogenous agents. The human gut simulator was further employed to the study of gut microbiota response to dietary long chain fatty acids as a sole nutrient source, following stabilization on a rich `western’ medium. Microbiota showed rapid responses to the transition from western to fat medium; where a lack of carbohydrates and proteins resulted in decreased community density. Specific members of the microbiota were capable of utilizing long chain fatty acids, including Bilophila, Alistipes, and Escherichia/Shigella. Interestingly, members of the microbiota incapable of metabolizing long chain fatty acids included beneficial microbes Roseburia, Bifidobacterium, and Akkermansia. Ordination and principal response curves analyses highlighted a significant effect of medium change on shifts in microbial composition over time. In conjunction with in vitro studies, human volunteers were enrolled to assess responses of microbiota to diets high in proteins, carbohydrates, or fats. Microarray analysis revealed specific individual host responses to test diets with smaller community wide effects. Increasing the amount of protein in the diet had a positive impact on relative abundance of Akkermansia, Alistipes, Enterococcus, and Lactococcus, while higher carbohydrates and fats resulted in higher abundances of Bifidobacterium, and Alistipes and Escherichia/Shigella, respectively. Together these results indicate that the Human Gut Simulator allows for robust studies of the human gut microbiota, and offers a foundation for conducting nutritional interventions in human subjects.
Download or read book The Human Microbiome Diet and Health written by Food Forum and published by National Academies Press. This book was released on 2013-02-27 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Food Forum convened a public workshop on February 22-23, 2012, to explore current and emerging knowledge of the human microbiome, its role in human health, its interaction with the diet, and the translation of new research findings into tools and products that improve the nutritional quality of the food supply. The Human Microbiome, Diet, and Health: Workshop Summary summarizes the presentations and discussions that took place during the workshop. Over the two day workshop, several themes covered included: The microbiome is integral to human physiology, health, and disease. The microbiome is arguably the most intimate connection that humans have with their external environment, mostly through diet. Given the emerging nature of research on the microbiome, some important methodology issues might still have to be resolved with respect to undersampling and a lack of causal and mechanistic studies. Dietary interventions intended to have an impact on host biology via their impact on the microbiome are being developed, and the market for these products is seeing tremendous success. However, the current regulatory framework poses challenges to industry interest and investment.
Download or read book Predictive Modeling of Human Microbiota and their Role in Health and Disease written by Hyun-Seob Song and published by Frontiers Media SA. This book was released on 2022-01-19 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Butyrate written by Cong-Jun Li and published by Nova Science Pub Incorporated. This book was released on 2014-01-01 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book specifically devoted to butyrate and its biological functions in the health of humans and animals. It is the result of the collective efforts of a group of international experts working on different aspects of butyrate. It has been recognised for a long time that the consumption of dietary fibres has positive metabolic health effects. These effects are directly associated with short-chain fatty acids (SCFAs), particularly butyrate, formed by the microbial degradation of dietary fibres in the digestive tract. Butyrate-induced biological effects provide examples of epigenomic regulation induced by nutrient elements and provide a basis for understanding the full range of the biological roles and molecular mechanisms that butyrate may play in cell growth, proliferation and energy metabolism. This book is a comprehensive collection of highly innovative research ideas, strategies, and crucial points related to butyrate and its biological functions. With a detailed introduction of recent advances in different but intriguing research fields, this book is a great reference for biochemists, molecular biologists, biomedical scientists and clinical researchers. This book is also a great reference for graduate students working in the related fields of biomedical sciences.
Download or read book Impact of diets differing in fat and fiber content on intestinal microbiota microbial activity and metabolic markers in a pig model written by Sonja Heinritz and published by Cuvillier Verlag. This book was released on 2016-08-30 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: The human intestinal microbial ecosystem plays an important role in maintaining health. Thereby, dietary modulation appears to be an efficient tool to beneficially steer microbial composition and metabolism. Within this regard, there is a considerable need for animal models to study potential ways of influencing health by dietary means. Thus, the objective of this thesis was to evaluate the use of the pig as potential model for research into dietary modulation of the human gut microbiota. First, a comprehensive literature review was given, comparing the human with the porcine gut microbiota and discussing existing studies concerning microbiota related diseases using the pig as a model. Furthermore, in a study with pigs, the effect of two different types of diets varying substantially in fat and fiber content on gut microbiota and microbial metabolites in feces and digesta samples was determined. High fiber content stimulated bacteria considered beneficial due to potential probiotic properties, particularly in view of human health. On the other hand, a high fat content fostered potential pathogenic bacteria. These data support diet as an important factor that shapes gut microbial community in a similar way to humans, which can help to establish the pig as a model for the evaluation of diverse forms of nutrition and dietary components.
Download or read book Systems Biology written by Bernhard Palsson and published by Cambridge University Press. This book was released on 2015-01-26 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first comprehensive single-authored textbook on genome-scale models and the bottom-up approach to systems biology.
Download or read book The Impact of Food Bioactives on Health written by Kitty Verhoeckx and published by Springer. This book was released on 2015-04-29 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Infogest” (Improving Health Properties of Food by Sharing our Knowledge on the Digestive Process) is an EU COST action/network in the domain of Food and Agriculture that will last for 4 years from April 4, 2011. Infogest aims at building an open international network of institutes undertaking multidisciplinary basic research on food digestion gathering scientists from different origins (food scientists, gut physiologists, nutritionists...). The network gathers 70 partners from academia, corresponding to a total of 29 countries. The three main scientific goals are: Identify the beneficial food components released in the gut during digestion; Support the effect of beneficial food components on human health; Promote harmonization of currently used digestion models Infogest meetings highlighted the need for a publication that would provide researchers with an insight into the advantages and disadvantages associated with the use of respective in vitro and ex vivo assays to evaluate the effects of foods and food bioactives on health. Such assays are particularly important in situations where a large number of foods/bioactives need to be screened rapidly and in a cost effective manner in order to ultimately identify lead foods/bioactives that can be the subject of in vivo assays. The book is an asset to researchers wishing to study the health benefits of their foods and food bioactives of interest and highlights which in vitro/ex vivo assays are of greatest relevance to their goals, what sort of outputs/data can be generated and, as noted above, highlight the strengths and weaknesses of the various assays. It is also an important resource for undergraduate students in the ‘food and health’ arena.
Download or read book How Fermented Foods Feed a Healthy Gut Microbiota written by M. Andrea Azcarate-Peril and published by Springer Nature. This book was released on 2019-11-28 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines the role of fermented foods on human gut health and offers a unique contribution to this rapidly growing area of study. Fermented foods have been consumed by humans for millennia. This method of food preservation provided early humans with beneficial bacteria that re-populated the gut microbiota upon consumption. However, novel methods of production and conservation of food have led to severed ties between the food that modern humans consume and the gut microbiota. As a consequence, there has been a documented increase in the prevalence of autoimmune diseases and obesity, which has been correlated to decreased diversity of gut microbes, while infectious disorders have decreased in the three past decades. With the intention of providing a thorough overview of the relationship between fermented foods, nutrition, and health, the editors have grouped the chapters into three thematic sections: food and their associated microbes, the oral microbiome, and the gut microbiome. After an introduction dedicated to the environmental microbiome, Part I provides an overview of what is currently known about the microbes associated with different foods, and compares traditional forms of food preparation with current industrial techniques in terms of the potential loss of microbial diversity. The chapters in Part 2 explore the oral microbiota as a microbial gatekeeper and main contributor to the gut microbiota. Part 3 introduces beneficial modulators of the gut microbiome starting with the establishment of a healthy gut microbiota during infancy, and continuing with the role of probiotics and prebiotics in health preservation and the imbalances of the gut microbiota. In the final section the editors offer concluding remarks and provide a view of the future brought by the microbiome research revolution. This study is unique in its emphasis on the convergence of two very relevant fields of research: the field of studies on Lactic Acid Bacteria (LAB) and fermented foods, and microbiome research. The relationship between these fields, as presented by the research in this volume, demonstrates the intimate connection between fermented foods, the oral and gut microbiota, and human health. Although research has been done on the impact of diet on the gut microbiome there are no publications addressing the restorative role of food as microbe provider to the gut microbiota. This novel approach makes the edited volume a key resource for scientific researchers working in this field.
Download or read book Environmental Chemicals the Human Microbiome and Health Risk written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2018-03-01 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: A great number of diverse microorganisms inhabit the human body and are collectively referred to as the human microbiome. Until recently, the role of the human microbiome in maintaining human health was not fully appreciated. Today, however, research is beginning to elucidate associations between perturbations in the human microbiome and human disease and the factors that might be responsible for the perturbations. Studies have indicated that the human microbiome could be affected by environmental chemicals or could modulate exposure to environmental chemicals. Environmental Chemicals, the Human Microbiome, and Health Risk presents a research strategy to improve our understanding of the interactions between environmental chemicals and the human microbiome and the implications of those interactions for human health risk. This report identifies barriers to such research and opportunities for collaboration, highlights key aspects of the human microbiome and its relation to health, describes potential interactions between environmental chemicals and the human microbiome, reviews the risk-assessment framework and reasons for incorporating chemicalâ€"microbiome interactions.
Download or read book Human Microbiome written by Mohsin Khurshid and published by Springer Nature. This book was released on with total page 721 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gut Microbiome and Its Impact on Health and Diseases written by Debabrata Biswas and published by Springer Nature. This book was released on 2020-08-27 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive examination of the role of gut microbiome/microflora in nutrition, metabolism, disease prevention and health issues, including farm animal health and food value, and human gastrointestinal health and immunity. Indigenous microbiotas, particularly the gut microflora/microbiome, are an essential component in the modern concept of human and animal health. The diet and lifestyle of the host and environment have direct impact on gut microflora and the patterns of gut microbial colonization associated with health and diseases have been documented. Contributing authors cover the impact of gut microbiome in farm animal health, and explore the possibility of modulating the human gut microbiome with better animal products to prevent human diseases, including endemic and emerging diseases such as obesity, cancer and cardiac diseases. Dieting plan and control methods are examined, with attention paid to balance dieting with natural food and drink components. In addition, the role of gut microbiota in enteric microbial colonization and infections in farm animals is also discussed. The volume also explores the possibility of improving human health by modulating the microbiome with better food, including bio-active foods and appropriate forms of intake. Throughout the chapters, authors examine cutting edge research and technology, as well as future directions for better practices regarding emerging issues, such as the safety and production of organic food.
Download or read book Engineering the Human Gut Microbiome Through Personalized Dietary Interventions written by Le Thanh Tu Nguyen and published by . This book was released on 2020 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: The human gastrointestinal tract is home to a dense and dynamic microbial community. The composition and metabolic output of the human gut microbiota have been implicated in many diseases: from inflammatory bowel disease, colorectal cancer, and diarrheal diseases to metabolic syndromes like diabetes. Treatment of these diseases will likely require targeted therapeutic interventions aimed at modulating the abundance and metabolism of specific commensal microbial species or probiotics. A promising avenue for such interventions is through diet, where the dietary components act as substrates for the species producing beneficial metabolites one wishes to enrich. In this thesis, I focus on a dietary intervention study in healthy individuals. Since the human gut microbiota is known for its highly heterogeneous composition across different individuals, it comes as no surprise that a more personalized approach is preeminent. We first test effects of multiple micronutrients spiked into a fixed diet. Using a highly controlled diet within the cohort, we identify strong and predictable responses of specific microbes across participants consuming prebiotic spike-ins. However, select macronutrient spike-ins like unsaturated or saturated fat and protein, produce no predictable response. We next investigate prebiotic supplement in diet further as well as its downstream products, short chain fatty acids, in the digestive tract. We look to alleviate the stress of a highly controlled, low complexity diet on participants by testing the effect of different prebiotics simultaneously ex vivo. We show that individuals vary in their microbial metabolic phenotypes (as in they produce different quantities and proportions of short chain fatty acids from the same prebiotic inputs) mirroring differences in their microbiota composition. Finally, we run a pilot study to elucidate how closely our ex vivo experiment results may reflect the in vivo changes following a short-term dietary fiber supplementation. In addition to obtaining preliminary data on this direct comparison, we also explore different parameters for generating high-throughput data on personalized dietary interventions. Together, these projects provide the framework for building a predicative model for the effect that prebiotic dietary supplementation will have on gut microbiota's composition. Such a prediction model would be equally helpful in both enhancing individuals' gut health and improving gut dysbiosis in cases of disease.
Download or read book Local Effects and Dietary Patterns by Food Groups are Important Shapers of the Colombian Gut Microbiota written by Ángela Sofia García Vega and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Cardiomentabolic disease prevalence is increasing. From the many risk factors of this disease we find biological and environmental factors. The environmental factors include diet and gut microbiota. The relationship between diet-gut microbiota and gut microbiota-health have shown that diet is a promising intervention factor that has been suggested as a modulator of gut microbiota, the consequent microbial changes are hypothesized to relate to disease. To date we have available information for all three factors in a Colombian community-dwelling cohort of adults. Using bioinformatic tools and multivariate statistical analysis we correlate the dietary, gut microbiota and the cardiometabolic health status data, controlling the models by other variables known to have an effect over the differential composition of the human gut microbiota, like age, sex and other sociodemographic information (including the city of residence). Our findings include significant relationships between gut microbiota and dietary data from consumed food groups and gut microbiota and health relationships that in both cases are dependent on local effects. From this findings we suggest for future analysis to desing a follow-up study with both dietary and gut microbiota composition taking into account local effecs.
Download or read book Nutrition Microbiota and Noncommunicable Diseases written by Julio Plaza-Díaz and published by MDPI. This book was released on 2021-01-20 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Health is defined as “the state of the organism when it functions optimally without evidence of disease”. Surprisingly, the words “microbes” or “microorganism” are missing in this definition. The regulation of gut microbiota is mediated by an enormous quantity of aspects, such as microbiological factors, host characteristics, diet patterns, and environmental variables. Some protective, structural, and metabolic functions have been reported for gut microbiota, and these functions are related to the regulation of homeostasis and host health. Host defense against pathogens is, in part, mediated through gut microbiota action and requires intimate interpretation of the current microenvironment and discrimination between commensal and occasional bacteria. The present Special Issue provides a summary of the progress on the topic of intestinal microbiota and its important role in human health in different populations. This Special Issue will be of great interest from a clinical and public health perspective. Nevertheless, more studies with more samples and comparable methods are necessary to understand the actual function of intestinal microbiota in disease development and health maintenance.
Download or read book Metabloism of Nutrients by Gut Microbiota written by Joseph F Pierre and published by Royal Society of Chemistry. This book was released on 2022-07-01 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bringing together expert researchers in the fields of microbiome, metabolism, and nutrition research, this book compiles the current state of knowledge from authorities specifically on how diet regulates microbial function with metabolic implications for the human host. Chapters cover the broad concepts of microbial-host interactions under the dietary influences of specific macronutrients, micronutrients, small molecule generation and bile acid circulation, with inclusion of later clinical chapters encompassing topics like bariatric surgery and our current understanding of probiotics, prebiotics, and synbiotics. Covering a timely topic from a functional standpoint, the book fills a gap in the existing literature. While increased attention is placed on descriptive work, it will importantly highlight emerging functional and mechanistic research findings that illustrate the inner workings of the dietary-microbial-host orchestration of metabolic regulation. Providing an exciting summary of the importance of current microbial function, it will also summarize the next major directions in the field of microbiome research.
Download or read book Emerging Roles of the Gut Microbiota in the Pathogenesis of Metabolic Disorders written by Isabel Moreno-Indias and published by Frontiers Media SA. This book was released on 2021-10-01 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gnotobiotics written by Trenton R Schoeb and published by Academic Press. This book was released on 2017-08-11 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gnotobiotics summarizes and analyzes the research conducted on the use of gnotobiotes, providing detailed information regarding actual facility operation and derivation of gnotobiotic animals. In response to the development of new tools for microbiota and microbiome analysis, the increasing recognition of the various roles of microbiota in health and disease, and the consequent expanding demand for gnotobiotic animals for microbiota/microbiome related research, this volume collates the research of this expanding field into one definitive resource. Reviews and defines gnotobiotic animal species Analyzes microbiota in numerous contexts Presents detailed coverage of the protocols and operation of a gnotobiotic facility
