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Nutrition microbiome

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https://www.readbyqxmd.com/read/29240224/metabolic-characterization-of-anaerobic-fungi-provides-a-path-forward-for-bioprocessing-of-crude-lignocellulose
#1
John K Henske, St Elmo Wilken, Kevin V Solomon, Chuck R Smallwood, Vaithiyalingam Shutthanandan, James E Evans, Michael K Theodorou, Michelle A O'Malley
The conversion of lignocellulose-rich biomass to bio-based chemicals and higher order fuels remains a grand challenge, as single-microbe approaches often cannot drive both deconstruction and chemical production steps. In contrast, consortia based bioprocessing leverages the strengths of different microbes to distribute metabolic loads and achieve process synergy, product diversity, and bolster yields. Here, we describe a biphasic fermentation scheme that combines the lignocellulolytic action of anaerobic fungi isolated from large herbivores with domesticated microbes for bioproduction...
December 14, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29228972/impact-of-prematurity-and-nutrition-on-the-developing-gut-microbiome-and-preterm-infant-growth
#2
Alex Grier, Xing Qiu, Sanjukta Bandyopadhyay, Jeanne Holden-Wiltse, Haeja A Kessler, Ann L Gill, Brooke Hamilton, Heidie Huyck, Sara Misra, Thomas J Mariani, Rita M Ryan, Lori Scholer, Kristin M Scheible, Yi-Horng Lee, Mary T Caserta, Gloria S Pryhuber, Steven R Gill
BACKGROUND: Identification of factors that influence the neonatal gut microbiome is urgently needed to guide clinical practices that support growth of healthy preterm infants. Here, we examined the influence of nutrition and common practices on the gut microbiota and growth in a cohort of preterm infants. RESULTS: With weekly gut microbiota samples spanning postmenstrual age (PMA) 24 to 46 weeks, we developed two models to test associations between the microbiota, nutrition and growth: a categorical model with three successive microbiota phases (P1, P2, and P3) and a model with two periods (early and late PMA) defined by microbiota composition and PMA, respectively...
December 11, 2017: Microbiome
https://www.readbyqxmd.com/read/29223004/towards-utilization-of-the-human-genome-and-microbiome-for-personalized-nutrition
#3
REVIEW
Stavros Bashiardes, Anastasia Godneva, Eran Elinav, Eran Segal
Generalized dietary and lifestyle guidelines have been formulated and published for decades now from a variety of relevant agencies in an attempt to guide people towards healthy choices. As the pandemic rise in metabolic diseases continues to increase, it has become clear that the one-fit-for-all diet approach does not work and that there is a significant variation in inter-individual responses to diet and lifestyle interventions. Recent technological advances have given an unprecedented insight into the sources of this variation, pointing towards our genome and microbiome as potentially and previously under-explored culprits contributing to individually unique dietary responses...
December 6, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/29221568/nutritional-programming-by-glucocorticoids-in-breast-milk-targets-mechanisms-and-possible-implications
#4
REVIEW
Jonneke J Hollanders, Annemieke C Heijboer, Bibian van der Voorn, Joost Rotteveel, Martijn J J Finken
Vertical transmission of glucocorticoids via breast milk might pose a mechanism through which lactating women could prepare their infants for the postnatal environment. The primary source of breast-milk glucocorticoids is probably the systemic circulation. Research from our group showed that milk cortisol and cortisone concentrations follow the diurnal rhythm of maternal hypothalamus-pituitary-adrenal axis activity, with a higher abundance of cortisone compared to cortisol. Measurement of breast-milk glucocorticoid concentrations is challenging due to possible cross-reactivity with progestagens and sex steroids, which are severely elevated during pregnancy and after parturition...
August 2017: Best Practice & Research. Clinical Endocrinology & Metabolism
https://www.readbyqxmd.com/read/29214071/is-bronchoscopy-an-obsolete-tool-in-cystic-fibrosis-the-role-of-bronchoscopy-in-cystic-fibrosis-and-its-clinical-use
#5
REVIEW
Lisa Paul
Cystic fibrosis (CF) is a progressive life threatening multisystem genetic disease which affects the CF transmembrane conductance regulator channel. Respiratory causes remain the most common mortality in CF. With the onset of newborn screening, initiating treatments both for prophylaxis and disease management, optimizing nutritional support, and developing therapies targeting CF transmembrane conductance regulator protein, this has significantly changed the face of managing this devastating disease. Bronchoscopy and related procedures such as bronchoalveolar lavage (BAL), transbronchial biopsies, and protected brush sampling have been looked at in the management of CF as patients with CF continue to live longer with the help of newer therapies, the microbiome in the lung becomes less diverse along with increased occurrences for noninfectious causes of airway diseases...
September 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29206649/the-importance-of-the-microbiome-in-pediatrics-and-pediatric-infectious-diseases
#6
Thaidra Gaufin, Nicole H Tobin, Grace M Aldrovandi
PURPOSE OF REVIEW: Emerging research on the pediatric microbiome implicates the importance of the microbiome on the development of the immune system, nervous system, and growth. Changes to the microbiome during infancy are associated with the development of chronic illnesses such as asthma and inflammatory bowel disease. Additionally, the microbiome provides protection against certain pathogens, affects vaccine responses, and alters drug metabolism. This review highlights what is known about the microbiome, the establishment of a healthy microbiome and the significance that changes to the microbiome composition have on growth and health of children and adolescents...
December 4, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/29188341/a-review-of-metabolic-potential-of-human-gut-microbiome-in-human-nutrition
#7
REVIEW
Monika Yadav, Manoj Kumar Verma, Nar Singh Chauhan
The human gut contains a plethora of microbes, providing a platform for metabolic interaction between the host and microbiota. Metabolites produced by the gut microbiota act as a link between gut microbiota and its host. These metabolites act as messengers having the capacity to alter the gut microbiota. Recent advances in the characterization of the gut microbiota and its symbiotic relationship with the host have provided a platform to decode metabolic interactions. The human gut microbiota, a crucial component for dietary metabolism, is shaped by the genetic, epigenetic and dietary factors...
November 29, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/29182421/feeding-strategy-shapes-gut-metagenomic-enrichment-and-functional-specialization-in-captive-lemurs
#8
E A McKenney, Thomas M O'Connell, Allen Rodrigo, Anne D Yoder
Many studies have demonstrated the effects of host diet on gut microbial membership, metagenomics, and fermentation individually; but few have attempted to interpret the relationship among these biological phenomena with respect to host features (e.g. gut morphology). We quantitatively compare the fecal microbial communities, metabolic pathways, and fermentation products associated with the nutritional intake of frugivorous (fruit-eating) and folivorous (leaf-eating) lemurs. Our results provide a uniquely multidimensional and comparative perspective on the adaptive dynamics between host and microbiome...
November 28, 2017: Gut Microbes
https://www.readbyqxmd.com/read/29180225/ferrosenescence-the-iron-age-of-neurodegeneration
#9
REVIEW
Adonis Sfera, Kelsey Bullock, Amy Price, Luzmin Inderias, Carolina Osorio
Aging has been associated with iron retention in many cell types, including the neurons, promoting neurodegeneration by ferroptosis. Excess intracellular iron accelerates aging by damaging the DNA and blocking genomic repair systems, a process we define as ferrosenescence. Novel neuroimaging and proteomic techniques have pinpointed indicators of both iron retention and ferrosenescence, allowing for their early correction, potentially bringing prevention of neurodegenerative disorders within reach. In this review, we take a closer look at the early markers of iron dyshomeostasis in neurodegenerative disorders, focusing on preventive strategies based on nutritional and microbiome manipulations...
November 24, 2017: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/29167556/alterations-in-gut-microbiota-associated-with-a-cafeteria-diet-and-the-physiological-consequences-in-the-host
#10
J M Del Bas, M Guirro, N Boqué, A Cereto, R Ras, A Crescenti, A Caimari, N Canela, L Arola
OBJECTIVE: Gut microbiota have been described as key players in the pathophysiology of obesity and different components of metabolic syndrome (MetS). The cafeteria diet (CAF)-fed rat is a preclinical model that reproduces most of the alterations found in human MetS by simulating a palatable human unbalanced diet. Our objective was to assess the effects of CAF on gut microbiota and their associations with different components of MetS in Wistar rats. METHODS: Animals were fed a standard diet or CAF for 12 weeks...
November 23, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29166404/species-specific-signatures-of-the-microbiome-from-camponotus-and-colobopsis-ants-across-developmental-stages
#11
Manuela Oliveira Ramalho, Odair Correa Bueno, Corrie Saux Moreau
Symbiotic relationships between hosts and bacteria are common in nature, and these may be responsible for the evolutionary success of various groups of animals. Among ants, these associations have been well studied in some genera of the Camponotini, but several questions remain regarding the generality of the previous findings across all the members of this ant tribe and if bacterial communities change across development in these hosts. This study is the first to characterize the bacterial community associated with a colony of the recently recognized genus Colobopsis and three colonies of Camponotus (two distinct species) and show how different the composition of the bacterial community is when compared across the different genera...
2017: PloS One
https://www.readbyqxmd.com/read/29134939/the-nursing-home-elder-microbiome-stability-and-associations-with-age-frailty-nutrition-and-physical-location
#12
John P Haran, Vanni Bucci, Protiva Dutta, Doyle Ward, Beth McCormick
PURPOSE: The microbiome from nursing home (NH) residents is marked by a loss in diversity that is associated with increased frailty. Our objective was to explore the associations of NH environment, frailty, nutritional status and residents' age to microbiome composition and potential metabolic function. METHODOLOGY: We conducted a prospective longitudinal cohort study of 23 residents, 65 years or older, from one NH that had four floors: two separate medical intensive floors and two floors with active elders...
November 14, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/29130306/evaluating-in-vitro-culture-medium-of-gut-microbiome-with-orthogonal-experimental-design-and-a-metaproteomics-approach
#13
Leyuan Li, Xu Zhang, Zhibin Ning, Janice Mayne, Jasmine I Moore, James Butcher, Cheng-Kang Chiang, David Mack, Alain Stintzi, Daniel Figeys
In vitro culture based approaches are time- and cost-effective solutions for rapidly evaluating the effects of drugs or natural compounds against microbiomes. The nutritional composition of the culture medium is an important determinant for effectively maintaining the gut microbiome in vitro. This study combines orthogonal experimental design and a metaproteomics approach to obtaining functional insights into the effects of different medium components on the microbiome. Our results show that the metaproteomic profile respond differently to medium components, including inorganic salts, bile salts, mucin, and short-chain fatty acids...
November 22, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/29129284/the-b-vitamin-nutrition-of-insects-the-contributions-of-diet-microbiome-and-horizontally-acquired-genes
#14
REVIEW
Angela E Douglas
Insects generally cannot synthesize eight B vitamins that function as co-enzymes in various required enzymatic reactions. Most insects derive their B vitamin requirements from the diet, microbial symbionts, or a combination of these complementary sources. Exceptionally, the genomes of a few insects bear genes in vitamin B5 (pantothenate) and B7 (biotin) synthesis, horizontally acquired from bacteria. Biomarkers of B vitamin deficiency (e.g. vitamin titers, activity of vitamin-dependent enzymes) offer routes to investigate the incidence and the physiological and fitness consequences of B vitamin deficiency in laboratory and field populations of insects...
October 2017: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/29124770/characterization-of-the-gut-microbiota-in-early-life-stages-of-pikeperch-sander-lucioperca
#15
T Dulski, Z Zakęś, S Ciesielski
This study characterized the gastrointestinal microbiome of nine juvenile farmed pikeperch Sander lucioperca using a metagenomics approach based on bacterial 16S rRNA gene sequencing. Potential changes in the gut microbiota during 2 months of S. lucioperca juvenile life were investigated. Results revealed that gut microbiota was dominated by Proteobacteria (95-92%), while other phyla Firmicutes (1-1·5%) and Actinobacteria (0·9-1·5%) were less abundant. At the family level, fish-gut microbiota were dominated by Enterobacteriaceae, which constituted c...
November 9, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/29122389/the-nutritional-geometry-of-liver-disease-including-non-alcoholic-fatty-liver-disease-nafld
#16
REVIEW
Stephen J Simpson, David Raubenheimer, Victoria C Cogger, Laurence Macia, Samantha M Solon-Biet, David G Le Couteur, Jacob George
Nutrition has a profound effect on chronic liver disease, especially non-alcoholic fatty liver disease (NAFLD). Most observational studies and clinical trials have focussed on the effects of total energy intake, or the intake of individual macronutrients and certain micronutrients, such as vitamin D, on liver disease. Although these studies have shown the importance of nutrition on hepatic outcomes, there is not yet any unifying framework for understanding the relationship between diet and liver disease. The Geometric Framework for Nutrition (GFN) is an innovative model for designing nutritional experiments or interpreting nutritional data that can determine the effects of nutrients and their interactions on animal behaviour and phenotypes...
November 3, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/29119316/accessing-the-hidden-microbial-diversity-of-aphids-an-illustration-of-how-culture-dependent-methods-can-be-used-to-decipher-the-insect-microbiota
#17
Alina S Grigorescu, François Renoz, Ahmed Sabri, Vincent Foray, Thierry Hance, Philippe Thonart
Microorganism communities that live inside insects can play critical roles in host development, nutrition, immunity, physiology, and behavior. Over the past decade, high-throughput sequencing reveals the extraordinary microbial diversity associated with various insect species and provides information independent of our ability to culture these microbes. However, their cultivation in the laboratory remains crucial for a deep understanding of their physiology and the roles they play in host insects. Aphids are insects that received specific attention because of their ability to form symbiotic associations with a wide range of endosymbionts that are considered as the core microbiome of these sap-feeding insects...
November 9, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/29107462/each-meal-matters-in-the-exposome-biological-and-community-considerations-in-fast-food-socioeconomic-associations
#18
Susan L Prescott, Alan C Logan
Advances in omics and microbiome technology have transformed the ways in which the biological consequences of life in the 'ecological theatre' can be visualized. Exposome science examines the total accumulated environmental exposures (both detrimental and beneficial) as a means to understand the response of the 'total organism to the total environment' over time. The repetitive stimulation of compensatory physiological responses (immune, cardiovascular, neuroendocrine) in response to stress - including sources of stress highly relevant to socioeconomic disadvantage - may lead to metabolic dysregulation and cellular damage, ultimately influencing behavior and disease...
November 2017: Economics and Human Biology
https://www.readbyqxmd.com/read/29106690/metabolic-syndrome-and-associated-diseases-from-the-bench-to-the-clinic
#19
Donna L Mendrick, Anna Mae Diehl, Lisa S Topor, Rodney R Dietert, Yvonne Will, Michele A La Merrill, Sebastien Bouret, Vijayalaskshmi Varma, Kenneth L Hastings, Thaddeus T Schug, Susan G Emeigh Hart, Florence G Burleson
Metabolic Syndrome and Associated Diseases: From the Bench to the Clinic, a Society of Toxicology Contemporary Concepts in Toxicology (CCT) workshop was held on March 11, 2017. The meeting was convened to raise awareness of metabolic syndrome and its associated diseases and serve as a melting pot with scientists of multiple disciplines (e.g., toxicologists, clinicians, regulators) so as to spur research and understanding of this condition. The criteria for metabolic syndrome include obesity, dyslipidemia (low HDL and/or elevated triglycerides), elevated blood pressure, and alterations in glucose metabolism...
November 2, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29097803/evaluating-the-contribution-of-gut-microbiome-to-the-variance-of-porcine-serum-glucose-and-lipid-concentration
#20
Xiaochang Huang, Shaoming Fang, Hui Yang, Jun Gao, Maozhang He, Shanlin Ke, Yuanzhang Zhao, Congying Chen, Lusheng Huang
Serum glucose and lipids are important indicators for host metabolic condition. Interaction of host and gut microbes regulates the metabolism process. However, how much the gut microbiome contributes to the variance of serum glucose and lipids is largely unknown. Here we carried out a 16S rRNA gene based association study between cecum microbiome and the concentration of serum glucose and lipids in 240 Chinese Erhualian pigs. We identified tens of bacterial taxa associated with serum glucose and lipids. The butyrate-producing bacteria were significantly associated with serum glucose level...
November 2, 2017: Scientific Reports
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