351
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Iwai K, Yoshikawa Y, Miyoshi N, Fukutomi R, Asada K, Ohashi N. Effects of Short-Term Intake of Wheat Bran with Different Particle Sizes on the Murine Intestinal Environment. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2017. [DOI: 10.3136/fstr.23.733] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Katsuki Iwai
- Graduate School of Integrated Pharmaceutical and Nutritional Sciences, Department of Food and Nutritional Sciences, University of Shizuoka
| | - Yuko Yoshikawa
- Graduate School of Integrated Pharmaceutical and Nutritional Sciences, Department of Food and Nutritional Sciences, University of Shizuoka
| | - Noriyuki Miyoshi
- Graduate School of Integrated Pharmaceutical and Nutritional Sciences, Department of Food and Nutritional Sciences, University of Shizuoka
| | | | | | - Norio Ohashi
- Graduate School of Integrated Pharmaceutical and Nutritional Sciences, Department of Food and Nutritional Sciences, University of Shizuoka
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Zhang M, Zheng M, Wu Z, Guan M, Liu S, Zhao W, Cheng J. Alteration of gut microbial community after N,N-Dimethylformamide exposure. J Toxicol Sci 2017; 42:241-250. [DOI: 10.2131/jts.42.241] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Man Zhang
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, China
| | - Min Zheng
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, China
| | - Zhijun Wu
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, China
| | - Mingyue Guan
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, China
| | - Shuai Liu
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, China
| | - Wenjin Zhao
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, China
| | - Juan Cheng
- National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, China
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353
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Affiliation(s)
- Scott Kinlay
- From Veterans Affairs Boston Healthcare System, MA (S.K.); and Brigham and Women's Hospital and Harvard Medical School, Boston, MA (S.K., T.M., J.A.L.)
| | - Thomas Michel
- From Veterans Affairs Boston Healthcare System, MA (S.K.); and Brigham and Women's Hospital and Harvard Medical School, Boston, MA (S.K., T.M., J.A.L.)
| | - Jane A Leopold
- From Veterans Affairs Boston Healthcare System, MA (S.K.); and Brigham and Women's Hospital and Harvard Medical School, Boston, MA (S.K., T.M., J.A.L.).
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354
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Contreras AV, Cocom-Chan B, Hernandez-Montes G, Portillo-Bobadilla T, Resendis-Antonio O. Host-Microbiome Interaction and Cancer: Potential Application in Precision Medicine. Front Physiol 2016; 7:606. [PMID: 28018236 PMCID: PMC5145879 DOI: 10.3389/fphys.2016.00606] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 11/21/2016] [Indexed: 12/19/2022] Open
Abstract
It has been experimentally shown that host-microbial interaction plays a major role in shaping the wellness or disease of the human body. Microorganisms coexisting in human tissues provide a variety of benefits that contribute to proper functional activity in the host through the modulation of fundamental processes such as signal transduction, immunity and metabolism. The unbalance of this microbial profile, or dysbiosis, has been correlated with the genesis and evolution of complex diseases such as cancer. Although this latter disease has been thoroughly studied using different high-throughput (HT) technologies, its heterogeneous nature makes its understanding and proper treatment in patients a remaining challenge in clinical settings. Notably, given the outstanding role of host-microbiome interactions, the ecological interactions with microorganisms have become a new significant aspect in the systems that can contribute to the diagnosis and potential treatment of solid cancers. As a part of expanding precision medicine in the area of cancer research, efforts aimed at effective treatments for various kinds of cancer based on the knowledge of genetics, biology of the disease and host-microbiome interactions might improve the prediction of disease risk and implement potential microbiota-directed therapeutics. In this review, we present the state of the art of sequencing and metabolome technologies, computational methods and schemes in systems biology that have addressed recent breakthroughs of uncovering relationships or associations between microorganisms and cancer. Together, microbiome studies extend the horizon of new personalized treatments against cancer from the perspective of precision medicine through a synergistic strategy integrating clinical knowledge, HT data, bioinformatics, and systems biology.
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Affiliation(s)
| | - Benjamin Cocom-Chan
- Instituto Nacional de Medicina GenómicaMexico City, Mexico; Human Systems Biology Laboratory, Instituto Nacional de Medicina GenómicaMexico City, Mexico
| | - Georgina Hernandez-Montes
- Coordinación de la Investigación Científica, Red de Apoyo a la Investigación-National Autonomous University of Mexico (UNAM) Mexico City, Mexico
| | - Tobias Portillo-Bobadilla
- Coordinación de la Investigación Científica, Red de Apoyo a la Investigación-National Autonomous University of Mexico (UNAM) Mexico City, Mexico
| | - Osbaldo Resendis-Antonio
- Instituto Nacional de Medicina GenómicaMexico City, Mexico; Human Systems Biology Laboratory, Instituto Nacional de Medicina GenómicaMexico City, Mexico; Coordinación de la Investigación Científica, Red de Apoyo a la Investigación-National Autonomous University of Mexico (UNAM)Mexico City, Mexico
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355
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de Almeida MLM, Feringer WH, Carvalho JRG, Rodrigues IM, Jordão LR, Fonseca MG, Carneiro de Rezende AS, de Queiroz Neto A, Weese JS, da Costa MC, Lemos EGDM, Ferraz GDC. Intense Exercise and Aerobic Conditioning Associated with Chromium or L-Carnitine Supplementation Modified the Fecal Microbiota of Fillies. PLoS One 2016; 11:e0167108. [PMID: 27935992 PMCID: PMC5147854 DOI: 10.1371/journal.pone.0167108] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 11/07/2016] [Indexed: 12/27/2022] Open
Abstract
Recent studies performed in humans and rats have reported that exercise can alter the intestinal microbiota. Athletic horses perform intense exercise regularly, but studies characterizing horse microbiome during aerobic conditioning programs are still limited. Evidence has indicated that this microbial community is involved in the metabolic homeostasis of the host. Research on ergogenic substances using new sequencing technologies have been limited to the intestinal microbiota and there is a considerable demand for scientific studies that verify the effectiveness of these supplements in horses. L-carnitine and chromium are potentially ergogenic substances for athletic humans and horses since they are possibly able to modify the metabolism of carbohydrates and lipids. This study aimed to assess the impact of acute exercise and aerobic conditioning, associated either with L-carnitine or chromium supplementation, on the intestinal microbiota of fillies. Twelve “Mangalarga Marchador” fillies in the incipient fitness stage were distributed into four groups: control (no exercise), exercise, L-carnitine (10g/day) and chelated chromium (10mg/day). In order to investigate the impact of acute exercise or aerobic conditioning on fecal microbiota all fillies undergoing the conditioning program were analyzed as a separate treatment. The fillies underwent two incremental exercise tests before and after training on a treadmill for 42 days at 70–80% of the lactate threshold intensity. Fecal samples were obtained before and 48 h after acute exercise (incremental exercise test). Bacterial populations were characterized by sequencing the V4 region of the 16S rRNA gene using the MiSeq Illumina platform, and 5,224,389 sequences were obtained from 48 samples. The results showed that, overall, the two most abundant phyla were Firmicutes (50.22%) followed by Verrucomicrobia (15.13%). The taxa with the highest relative abundances were unclassified Clostridiales (17.06%) and "5 genus incertae sedis" from the phylum Verrucomicrobia (12.98%). There was a decrease in the phylum Chlamydiae and in the genus Mycobacterium after the second incremental exercise test. Intense exercise changed the community’s structure and aerobic conditioning was associated with changes in the composition and structure of the intestinal bacterial population of fillies. The intra-group comparison showed that chromium or L-carnitine induced moderate changes in the fecal microbiota of fillies, but the microbiota did not differ from the control group, which was exercised with no supplementation. Fecal pH correlated positively with Simpson’s index, while plasma pH correlated negatively. Our results show that exercise and aerobic conditioning can change in the microbiota and provide a basis for further studies enrolling a larger number of horses at different fitness levels to better understand the effects of exercise and training on the intestinal microbiota of horses.
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Affiliation(s)
- Maria Luiza Mendes de Almeida
- Department of Technology, Faculdades de Ciências Agrárias e Veterinárias, UNESP Univ Estadual Paulista, Laboratório de Bioquímica de Microrganismos e Plantas, Jaboticabal, São Paulo, Brazil
| | - Walter Heinz Feringer
- Department of Animal Morphology and Physiology, Faculdades de Ciências Agrárias e Veterinárias, UNESP Univ Estadual Paulista, Laboratório de Farmacologia e Fisiologia do Exercício Equino (LAFEQ), Jaboticabal, São Paulo, Brazil
| | - Júlia Ribeiro Garcia Carvalho
- Department of Animal Morphology and Physiology, Faculdades de Ciências Agrárias e Veterinárias, UNESP Univ Estadual Paulista, Laboratório de Farmacologia e Fisiologia do Exercício Equino (LAFEQ), Jaboticabal, São Paulo, Brazil
| | - Isadora Mestriner Rodrigues
- Department of Animal Morphology and Physiology, Faculdades de Ciências Agrárias e Veterinárias, UNESP Univ Estadual Paulista, Laboratório de Farmacologia e Fisiologia do Exercício Equino (LAFEQ), Jaboticabal, São Paulo, Brazil
| | - Lilian Rezende Jordão
- Department of Animal Sciences, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Mayara Gonçalves Fonseca
- Department of Animal Sciences, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | - Antonio de Queiroz Neto
- Department of Animal Morphology and Physiology, Faculdades de Ciências Agrárias e Veterinárias, UNESP Univ Estadual Paulista, Laboratório de Farmacologia e Fisiologia do Exercício Equino (LAFEQ), Jaboticabal, São Paulo, Brazil
| | - J. Scott Weese
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Ontario, Canada
| | | | - Eliana Gertrudes de Macedo Lemos
- Department of Technology, Faculdades de Ciências Agrárias e Veterinárias, UNESP Univ Estadual Paulista, Laboratório de Bioquímica de Microrganismos e Plantas, Jaboticabal, São Paulo, Brazil
| | - Guilherme de Camargo Ferraz
- Department of Animal Morphology and Physiology, Faculdades de Ciências Agrárias e Veterinárias, UNESP Univ Estadual Paulista, Laboratório de Farmacologia e Fisiologia do Exercício Equino (LAFEQ), Jaboticabal, São Paulo, Brazil
- * E-mail:
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356
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Andriessen EM, Wilson AM, Mawambo G, Dejda A, Miloudi K, Sennlaub F, Sapieha P. Gut microbiota influences pathological angiogenesis in obesity-driven choroidal neovascularization. EMBO Mol Med 2016; 8:1366-1379. [PMID: 27861126 PMCID: PMC5167134 DOI: 10.15252/emmm.201606531] [Citation(s) in RCA: 118] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
Age-related macular degeneration in its neovascular form (NV AMD) is the leading cause of vision loss among adults above the age of 60. Epidemiological data suggest that in men, overall abdominal obesity is the second most important environmental risk factor after smoking for progression to late-stage NV AMD To date, the mechanisms that underscore this observation remain ill-defined. Given the impact of high-fat diets on gut microbiota, we investigated whether commensal microbes influence the evolution of AMD Using mouse models of NV AMD, microbiotal transplants, and other paradigms that modify the gut microbiome, we uncoupled weight gain from confounding factors and demonstrate that high-fat diets exacerbate choroidal neovascularization (CNV) by altering gut microbiota. Gut dysbiosis leads to heightened intestinal permeability and chronic low-grade inflammation characteristic of inflammaging with elevated production of IL-6, IL-1β, TNF-α, and VEGF-A that ultimately aggravate pathological angiogenesis.
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Affiliation(s)
- Elisabeth Mma Andriessen
- Department of Biomedical Sciences, Maisonneuve-Rosemont Hospital Research Centre University of Montreal, Montreal, Quebec, Canada
| | - Ariel M Wilson
- Department of Engineering Physics, Laser Processing and Plasmonics Laboratory École Polytechnique de Montréal, Montreal, Quebec, Canada
| | - Gaelle Mawambo
- Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
| | - Agnieszka Dejda
- Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada.,Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada
| | - Khalil Miloudi
- Department of Neurology-Neurosurgery, McGill University, Montreal, Quebec, Canada
| | - Florian Sennlaub
- INSERM, U 968, Sorbonne Universités, Université Pierre et Marie Curie Paris 06, Unité Mixte de Recherche S 968, Institut de la Vision, CNRS, Unité Mixte de Recherche, Paris, France
| | - Przemyslaw Sapieha
- Department of Biomedical Sciences, Maisonneuve-Rosemont Hospital Research Centre University of Montreal, Montreal, Quebec, Canada .,Department of Biochemistry, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada.,Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec, Canada.,Department of Neurology-Neurosurgery, McGill University, Montreal, Quebec, Canada
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357
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Hauptmann M, Schaible UE. Linking microbiota and respiratory disease. FEBS Lett 2016; 590:3721-3738. [PMID: 27637588 DOI: 10.1002/1873-3468.12421] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 08/30/2016] [Accepted: 09/07/2016] [Indexed: 12/13/2022]
Abstract
An increasing body of evidence indicates the relevance of microbiota for pulmonary health and disease. Independent investigations recently demonstrated that the lung harbors a resident microbiota. Therefore, it is intriguing that a lung microbiota can shape pulmonary immunity and epithelial barrier functions. Here, we discuss the ways how the composition of the microbial community in the lung may influence pulmonary health and vice versa, factors that determine community composition. Prominent microbiota at other body sites such as the intestinal one may also contribute to pulmonary health and disease. However, it is difficult to discriminate between influences of lung vs. gut microbiota due to systemic mutuality between both communities. With focuses on asthma and respiratory infections, we discuss how microbiota of lung and gut can determine pulmonary immunity and barrier functions.
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Affiliation(s)
- Matthias Hauptmann
- Priority Program Infections, Cellular Microbiology, Research Center Borstel, Germany
| | - Ulrich E Schaible
- Priority Program Infections, Cellular Microbiology, Research Center Borstel, Germany.,German Centre for Infection Research, TTU-TB, Borstel, Germany
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358
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Exercise and Prebiotics Produce Stress Resistance: Converging Impacts on Stress-Protective and Butyrate-Producing Gut Bacteria. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2016; 131:165-191. [PMID: 27793217 DOI: 10.1016/bs.irn.2016.08.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The gut microbial ecosystem can mediate the negative health impacts of stress on the host. Stressor-induced disruptions in microbial ecology (dysbiosis) can lead to maladaptive health effects, while certain probiotic organisms and their metabolites can protect against these negative impacts. Prebiotic diets and exercise are feasible and cost-effective strategies that can increase stress-protective bacteria and produce resistance against the detrimental behavioral and neurobiological impacts of stress. The goal of this review is to describe research demonstrating that both prebiotic diets and exercise produce adaptations in gut ecology and the brain that arm the organism against inescapable stress-induced learned helplessness. The results of this research support the novel hypothesis that some of the stress-protective effects of prebiotics and exercise are due to increases in stress-protective gut microbial species and their metabolites. In addition, new evidence also suggests that prebiotic diet or exercise interventions are most effective if given early in life (juvenile-adolescence) when both the gut microbial ecosystem and the brain are plastic. Based on our new understanding of the mechanistic convergence of these interventions, it is feasible to propose that in adults, both interventions delivered in combination may elevate their efficacy to promote a stress-resistant phenotype.
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359
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Janabi A, Biddle A, Klein D, McKeever K. Exercise training-induced changes in the gut microbiota of Standardbred racehorses. COMPARATIVE EXERCISE PHYSIOLOGY 2016. [DOI: 10.3920/cep160015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Exercise has a significant effect on different physiological systems in the body of human and animals. Only limited numbers of published studies in laboratory animals or humans have shown the effect of exercise on the gut microbiota, and no studies have shown this effect in horses. In this study, 8 horses (4 mares, 4 geldings) were exercise trained for 12 weeks, and 4 additional mares were used as a parallel seasonal control. To identify bacterial community changes over time for both groups, rectal faecal samples were collected, DNA was extracted, and the 16S rRNA gene (V3-V4) was sequenced using the Illumina Miseq platform. One-way ANOVA, Shannon diversity index, and Principal Coordinate Analysis (PCoA) were used to identify differences between and among samples. The exercise training group showed significant changes in the levels of Bacteroidetes, Proteobacteria, and Spirochaetes phyla (P<0.05), while there were no changes in the gut microbiota of the seasonal control group through the three months of the study (P>0.05). Moreover, with training two genera significantly changed in their relative abundance over time, namely Clostridium and Dysgonomonas (P<0.05). Dysgonomonas spp. was significantly changed in abundance during the exercise training period (P<0.05). Also Treponema spp. showed significant changes during the exercise training period (P<0.05). Shannon diversity index was decreased (P<0.05) in the exercise group at the beginning of the study, but then returned to pre-training levels. PCoA showed significant separation between time points of the exercise training group as far as the levels of genera and species (P<0.05) represented. Our results show that exercise training influences the gut microbiota, especially at the beginning of training.
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Affiliation(s)
- A.H.D. Janabi
- Microbial Biology Graduate Program, Rutgers-The State University of New Jersey, New Brunswick, NJ 08901, USA
| | - A.S. Biddle
- Department of Animal and Food Sciences, University of Delaware, Newark, DE 19716, USA
| | - D. Klein
- Nutritional Sciences Graduate Program, Rutgers-The State University of New Jersey, New Brunswick, NJ 08901, USA
| | - K.H. McKeever
- Equine Science Center, Department of Animal Science, Rutgers-The State University of New Jersey, New Brunswick, NJ 08901, USA
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360
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Nehra V, Allen JM, Mailing LJ, Kashyap PC, Woods JA. Gut Microbiota: Modulation of Host Physiology in Obesity. Physiology (Bethesda) 2016; 31:327-35. [PMID: 27511459 PMCID: PMC5005265 DOI: 10.1152/physiol.00005.2016] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Many factors are involved in weight gain and metabolic disturbances associated with obesity. The gut microbiota has been of particular interest in recent years, since both human and animal studies have increased our understanding of the delicate symbiosis between the trillions of microbes that reside in the GI tract and the host. It has been suggested that disruption of this mutual tolerance may play a significant role in modulating host physiology during obesity. Environmental influences such as diet, exercise, and early life exposures can significantly impact the composition of the microbiota, and this dysbiosis can in turn lead to increased host adiposity via a number of different mechanisms. The ability of the microbiota to regulate host fat deposition, metabolism, and immune function makes it an attractive target for achieving sustained weight loss.
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Affiliation(s)
- Vandana Nehra
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota;
| | - Jacob M Allen
- Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, Illinois; and
| | - Lucy J Mailing
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana Illinois
| | - Purna C Kashyap
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Jeffrey A Woods
- Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, Illinois; and Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana Illinois
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361
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Estaki M, Pither J, Baumeister P, Little JP, Gill SK, Ghosh S, Ahmadi-Vand Z, Marsden KR, Gibson DL. Cardiorespiratory fitness as a predictor of intestinal microbial diversity and distinct metagenomic functions. MICROBIOME 2016; 4:42. [PMID: 27502158 PMCID: PMC4976518 DOI: 10.1186/s40168-016-0189-7] [Citation(s) in RCA: 281] [Impact Index Per Article: 35.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 07/27/2016] [Indexed: 05/12/2023]
Abstract
BACKGROUND Reduced microbial diversity in human intestines has been implicated in various conditions such as diabetes, colorectal cancer, and inflammatory bowel disease. The role of physical fitness in the context of human intestinal microbiota is currently not known. We used high-throughput sequencing to analyze fecal microbiota of 39 healthy participants with similar age, BMI, and diets but with varying cardiorespiratory fitness levels. Fecal short-chain fatty acids were analyzed using gas chromatography. RESULTS We showed that peak oxygen uptake (VO2peak), the gold standard measure of cardiorespiratory fitness, can account for more than 20 % of the variation in taxonomic richness, after accounting for all other factors, including diet. While VO2peak did not explain variation in beta diversity, it did play a significant role in explaining variation in the microbiomes' predicted metagenomic functions, aligning positively with genes related to bacterial chemotaxis, motility, and fatty acid biosynthesis. These predicted functions were supported by measured increases in production of fecal butyrate, a short-chain fatty acid associated with improved gut health, amongst physically fit participants. We also identified increased abundances of key butyrate-producing taxa (Clostridiales, Roseburia, Lachnospiraceae, and Erysipelotrichaceae) amongst these individuals, which likely contributed to the observed increases in butyrate levels. CONCLUSIONS Results from this study show that cardiorespiratory fitness is correlated with increased microbial diversity in healthy humans and that the associated changes are anchored around a set of functional cores rather than specific taxa. The microbial profiles of fit individuals favor the production of butyrate. As increased microbiota diversity and butyrate production is associated with overall host health, our findings warrant the use of exercise prescription as an adjuvant therapy in combating dysbiosis-associated diseases.
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Affiliation(s)
- Mehrbod Estaki
- Department of Biology, The Irving K. Barber School of Arts and Sciences, University of British Columbia, Room ASC 386, 3187 University Way, Okanagan campus, Kelowna, British Columbia V1V 1V7 Canada
| | - Jason Pither
- Department of Biology, The Irving K. Barber School of Arts and Sciences, University of British Columbia, Room ASC 386, 3187 University Way, Okanagan campus, Kelowna, British Columbia V1V 1V7 Canada
| | - Peter Baumeister
- School of Health and Exercise Sciences, University of British Columbia, Okanagan campus, Kelowna, British Columbia V1V 1V7 Canada
| | - Jonathan P. Little
- School of Health and Exercise Sciences, University of British Columbia, Okanagan campus, Kelowna, British Columbia V1V 1V7 Canada
| | - Sandeep K. Gill
- Department of Biology, The Irving K. Barber School of Arts and Sciences, University of British Columbia, Room ASC 386, 3187 University Way, Okanagan campus, Kelowna, British Columbia V1V 1V7 Canada
| | - Sanjoy Ghosh
- Department of Biology, The Irving K. Barber School of Arts and Sciences, University of British Columbia, Room ASC 386, 3187 University Way, Okanagan campus, Kelowna, British Columbia V1V 1V7 Canada
| | - Zahra Ahmadi-Vand
- Department of Biology, The Irving K. Barber School of Arts and Sciences, University of British Columbia, Room ASC 386, 3187 University Way, Okanagan campus, Kelowna, British Columbia V1V 1V7 Canada
| | - Katelyn R. Marsden
- School of Health and Exercise Sciences, University of British Columbia, Okanagan campus, Kelowna, British Columbia V1V 1V7 Canada
| | - Deanna L. Gibson
- Department of Biology, The Irving K. Barber School of Arts and Sciences, University of British Columbia, Room ASC 386, 3187 University Way, Okanagan campus, Kelowna, British Columbia V1V 1V7 Canada
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362
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Wang CZ, Yu C, Wen XD, Chen L, Zhang CF, Calway T, Qiu Y, Wang Y, Zhang Z, Anderson S, Wang Y, Jia W, Yuan CS. American Ginseng Attenuates Colitis-Associated Colon Carcinogenesis in Mice: Impact on Gut Microbiota and Metabolomics. Cancer Prev Res (Phila) 2016; 9:803-811. [PMID: 27443884 DOI: 10.1158/1940-6207.capr-15-0372] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 07/07/2016] [Indexed: 12/18/2022]
Abstract
Inflammatory bowel disease is a risk factor for colorectal cancer initiation and development. In this study, the effects of American ginseng on chemically induced colitis and colon carcinogenesis were evaluated using an azoxymethane (AOM)/dextran sulfate sodium (DSS) mouse model. During the acute phase on day 15, the oral administration of ginseng (15 and 30 mg/kg/day) significantly suppressed AOM/DSS-induced colitis, as demonstrated by the disease activity index and colon tissue histology. During the chronic phase in week 13, AOM/DSS-induced tumor multiplicity was significantly suppressed by ginseng. Ginseng significantly attenuated the increase of inflammatory cytokines, such as IL1α, IL1β, IL6, G-CSF, and GM-CSF. Serum metabolomics data in the PCA plots showed good separation between the AOM/DSS model and ginseng-treated mice, and the most important endogenous metabolite changes were identified. The 16S rRNA data showed that after AOM/DSS, the microbiome community in the model group was obviously changed, and ginseng inhibited these changes. Fecal metabolomics analysis supported these findings. In conclusion, oral ginseng significantly decreased AOM/DSS-induced colitis and colon carcinogenesis by inhibiting inflammatory cytokines and restoring the metabolomics and microbiota profiles accordingly. Selective endogenous small molecules could be used as biomarkers to elucidate the effects of ginseng treatment. Cancer Prev Res; 9(10); 803-11. ©2016 AACR.
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Affiliation(s)
- Chong-Zhi Wang
- Tang Center for Herbal Medicine Research, University of Chicago, Chicago, Illinois. Department of Anesthesia & Critical Care, University of Chicago, Chicago, Illinois
| | - Chunhao Yu
- Tang Center for Herbal Medicine Research, University of Chicago, Chicago, Illinois. School of Life Science and Chemical Engineering, Huaiyin Institute of Technology, Huaian, China
| | - Xiao-Dong Wen
- Tang Center for Herbal Medicine Research, University of Chicago, Chicago, Illinois. State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, China
| | - Lina Chen
- Tang Center for Herbal Medicine Research, University of Chicago, Chicago, Illinois. Department of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Chun-Feng Zhang
- Tang Center for Herbal Medicine Research, University of Chicago, Chicago, Illinois. State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, China
| | - Tyler Calway
- Tang Center for Herbal Medicine Research, University of Chicago, Chicago, Illinois. Department of Anesthesia & Critical Care, University of Chicago, Chicago, Illinois
| | - Yunping Qiu
- Einstein-Sinai Diabetes Research Center, Albert Einstein College of Medicine, Bronx, New York
| | - Yunwei Wang
- Department of Medicine, University of Chicago, Chicago, Illinois
| | - Zhiyu Zhang
- Tang Center for Herbal Medicine Research, University of Chicago, Chicago, Illinois. Department of Anesthesia & Critical Care, University of Chicago, Chicago, Illinois
| | - Samantha Anderson
- Tang Center for Herbal Medicine Research, University of Chicago, Chicago, Illinois
| | - Yitao Wang
- State Key Laboratory of Quality Research in Chinese Medicine, and Institute of Chinese Medical Sciences, University of Macau, Macau
| | - Wei Jia
- University of Hawaii Cancer Center, Honolulu, Hawaii
| | - Chun-Su Yuan
- Tang Center for Herbal Medicine Research, University of Chicago, Chicago, Illinois. Department of Anesthesia & Critical Care, University of Chicago, Chicago, Illinois. Committee on Clinical Pharmacology and Pharmacogenomics, University of Chicago, Chicago, Illinois.
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363
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Dickson RP, Singer BH, Newstead MW, Falkowski NR, Erb-Downward JR, Standiford TJ, Huffnagle GB. Enrichment of the lung microbiome with gut bacteria in sepsis and the acute respiratory distress syndrome. Nat Microbiol 2016; 1:16113. [PMID: 27670109 DOI: 10.1038/nmicrobiol.2016.113] [Citation(s) in RCA: 403] [Impact Index Per Article: 50.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 06/03/2016] [Indexed: 12/15/2022]
Abstract
Sepsis and the acute respiratory distress syndrome (ARDS) are major causes of mortality without targeted therapies. Although many experimental and clinical observations have implicated gut microbiota in the pathogenesis of these diseases, culture-based studies have failed to demonstrate translocation of bacteria to the lungs in critically ill patients. Here, we report culture-independent evidence that the lung microbiome is enriched with gut bacteria both in a murine model of sepsis and in humans with established ARDS. Following experimental sepsis, lung communities were dominated by viable gut-associated bacteria. Ecological analysis identified the lower gastrointestinal tract, rather than the upper respiratory tract, as the likely source community of post-sepsis lung bacteria. In bronchoalveolar lavage fluid from humans with ARDS, gut-specific bacteria (Bacteroides spp.) were common and abundant, undetected by culture and correlated with the intensity of systemic inflammation. Alveolar TNF-α, a key mediator of alveolar inflammation in ARDS, was significantly correlated with altered lung microbiota. Our results demonstrate that the lung microbiome is enriched with gut-associated bacteria in sepsis and ARDS, potentially representing a shared mechanism of pathogenesis in these common and lethal diseases.
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Affiliation(s)
- Robert P Dickson
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA
| | - Benjamin H Singer
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA
| | - Michael W Newstead
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA
| | - Nicole R Falkowski
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA
| | - John R Erb-Downward
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA
| | - Theodore J Standiford
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA
| | - Gary B Huffnagle
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA.,Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA
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364
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van den Brule S, Ambroise J, Lecloux H, Levard C, Soulas R, De Temmerman PJ, Palmai-Pallag M, Marbaix E, Lison D. Dietary silver nanoparticles can disturb the gut microbiota in mice. Part Fibre Toxicol 2016; 13:38. [PMID: 27393559 PMCID: PMC4939013 DOI: 10.1186/s12989-016-0149-1] [Citation(s) in RCA: 110] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 06/21/2016] [Indexed: 02/08/2023] Open
Abstract
Background Humans are increasingly exposed via the diet to Ag nanoparticles (NP) used in the food industry. Because of their anti-bacterial activity, ingested Ag NP might disturb the gut microbiota that is essential for local and systemic homeostasis. We explored here the possible impact of dietary Ag NP on the gut microbiota in mice at doses relevant for currently estimated human intake. Methods Mice were orally exposed to food (pellets) supplemented with increasing doses of Ag NP (0, 46, 460 or 4600 ppb) during 28 d. Body weight, systemic inflammation and gut integrity were investigated to determine overall toxicity, and feces DNA collected from the gut were analyzed by Next Generation Sequencing (NGS) to assess the effect of Ag NP on the bacterial population. Ag NP were characterized alone and in the supplemented pellets by scanning transmission electron microscopy (STEM) and energy dispersive X-ray analysis (EDX). Results No overall toxicity was recorded in mice exposed to Ag NP. Ag NP disturbed bacterial evenness (α-diversity) and populations (β-diversity) in a dose-dependent manner. Ag NP increased the ratio between Firmicutes (F) and Bacteroidetes (B) phyla. At the family level, Lachnospiraceae and the S24-7 family mainly accounted for the increase in Firmicutes and decrease in Bacteroidetes, respectively. Similar effects were not observed in mice identically exposed to the same batch of Ag NP-supplemented pellets aged during 4 or 8 months and the F/B ratio was less or not modified. Analysis of Ag NP-supplemented pellets showed that freshly prepared pellets released Ag ions faster than aged pellets. STEM-EDX analysis also showed that Ag sulfidation occurred in aged Ag NP-supplemented pellets. Conclusions Our data indicate that oral exposure to human relevant doses of Ag NP can induce microbial alterations in the gut. The bacterial disturbances recorded after Ag NP are similar to those reported in metabolic and inflammatory diseases, such as obesity. It also highlights that Ag NP aging in food, and more specifically sulfidation, can reduce the effects of Ag NP on the microbiota by limiting the release of toxic Ag ions. Electronic supplementary material The online version of this article (doi:10.1186/s12989-016-0149-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Sybille van den Brule
- Louvain centre for Toxicology and Applied Pharmacology, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, Avenue E. Mounier 52 - bte B1.52.12, 1200, Brussels, Belgium.
| | - Jérôme Ambroise
- Centre de Technologies Moléculaires Appliquées, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, Clos Chapelle-aux-champs 30 bte B1.30.24, 1200, Brussels, Belgium
| | - Hélène Lecloux
- Louvain centre for Toxicology and Applied Pharmacology, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, Avenue E. Mounier 52 - bte B1.52.12, 1200, Brussels, Belgium
| | - Clément Levard
- CEREGE, Aix Marseille Université, CNRS, IRD, UM34, UMR 7330, Europole de l'arbois - BP 80, 13545, Aix en Provence, France
| | - Romain Soulas
- CEA LITEN Grenoble, 17 Rue des Martyrs, 38054, GRENOBLE - CEDEX 9, France
| | - Pieter-Jan De Temmerman
- Electron Microscopy Unit, Veterinary and Agrochemical Research Centre (CODA-CERVA), Groeselenberg 99, 1180, Brussels, Belgium
| | - Mihaly Palmai-Pallag
- Louvain centre for Toxicology and Applied Pharmacology, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, Avenue E. Mounier 52 - bte B1.52.12, 1200, Brussels, Belgium
| | - Etienne Marbaix
- De Duve Institute, Université catholique de Louvain, Avenue Hippocrate 75 - bte B1.75.02, 1200, Brussels, Belgium
| | - Dominique Lison
- Louvain centre for Toxicology and Applied Pharmacology, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, Avenue E. Mounier 52 - bte B1.52.12, 1200, Brussels, Belgium
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365
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Ormerod KL, Wood DLA, Lachner N, Gellatly SL, Daly JN, Parsons JD, Dal'Molin CGO, Palfreyman RW, Nielsen LK, Cooper MA, Morrison M, Hansbro PM, Hugenholtz P. Genomic characterization of the uncultured Bacteroidales family S24-7 inhabiting the guts of homeothermic animals. MICROBIOME 2016; 4:36. [PMID: 27388460 PMCID: PMC4936053 DOI: 10.1186/s40168-016-0181-2] [Citation(s) in RCA: 426] [Impact Index Per Article: 53.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 06/23/2016] [Indexed: 05/05/2023]
Abstract
BACKGROUND Our view of host-associated microbiota remains incomplete due to the presence of as yet uncultured constituents. The Bacteroidales family S24-7 is a prominent example of one of these groups. Marker gene surveys indicate that members of this family are highly localized to the gastrointestinal tracts of homeothermic animals and are increasingly being recognized as a numerically predominant member of the gut microbiota; however, little is known about the nature of their interactions with the host. RESULTS Here, we provide the first whole genome exploration of this family, for which we propose the name "Candidatus Homeothermaceae," using 30 population genomes extracted from fecal samples of four different animal hosts: human, mouse, koala, and guinea pig. We infer the core metabolism of "Ca. Homeothermaceae" to be that of fermentative or nanaerobic bacteria, resembling that of related Bacteroidales families. In addition, we describe three trophic guilds within the family, plant glycan (hemicellulose and pectin), host glycan, and α-glucan, each broadly defined by increased abundance of enzymes involved in the degradation of particular carbohydrates. CONCLUSIONS "Ca. Homeothermaceae" representatives constitute a substantial component of the murine gut microbiota, as well as being present within the human gut, and this study provides important first insights into the nature of their residency. The presence of trophic guilds within the family indicates the potential for niche partitioning and specific roles for each guild in gut health and dysbiosis.
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Affiliation(s)
- Kate L Ormerod
- Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
| | - David L A Wood
- Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
| | - Nancy Lachner
- Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
| | - Shaan L Gellatly
- Priority Research Centre for Healthy Lungs, The University of Newcastle and Hunter Medical Research Institute, Newcastle, Australia
| | - Joshua N Daly
- Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
| | - Jeremy D Parsons
- QFAB Bioinformatics, The University of Queensland, Brisbane, Australia
| | - Cristiana G O Dal'Molin
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Australia
| | - Robin W Palfreyman
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Australia
| | - Lars K Nielsen
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Australia
| | - Matthew A Cooper
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Mark Morrison
- Microbial Biology and Metagenomics, The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, Australia
| | - Philip M Hansbro
- Priority Research Centre for Healthy Lungs, The University of Newcastle and Hunter Medical Research Institute, Newcastle, Australia
| | - Philip Hugenholtz
- Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia.
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366
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Abstract
NAFLD is now the most common cause of liver disease in Western countries. This Review explores the links between NAFLD, the metabolic syndrome, dysbiosis, poor diet and gut health. Animal studies in which the gut microbiota are manipulated, and observational studies in patients with NAFLD, have provided considerable evidence that dysbiosis contributes to the pathogenesis of NAFLD. Dysbiosis increases gut permeability to bacterial products and increases hepatic exposure to injurious substances that increase hepatic inflammation and fibrosis. Dysbiosis, combined with poor diet, also changes luminal metabolism of food substrates, such as increased production of certain short-chain fatty acids and alcohol, and depletion of choline. Changes to the microbiome can also cause dysmotility, gut inflammation and other immunological changes in the gut that might contribute to liver injury. Evidence also suggests that certain food components and lifestyle factors, which are known to influence the severity of NAFLD, do so at least in part by changing the gut microbiota. Improved methods of analysis of the gut microbiome, and greater understanding of interactions between dysbiosis, diet, environmental factors and their effects on the gut-liver axis should improve the treatment of this common liver disease and its associated disorders.
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Affiliation(s)
- Christopher Leung
- Department of Medicine, The University of Melbourne, Austin Health, Heidelberg, Melbourne, VIC 3084, Australia.,Department of Gastroenterology and Hepatology, Austin Health, Austin Hospital, Heidelberg, Melbourne, VIC 3084, Australia
| | - Leni Rivera
- Metabolic Research Unit, School of Medicine, Deakin University, Geelong, VIC 3216, Australia.,Department of Anatomy and Neuroscience, University of Melbourne, Grattan Street, Parkville, VIC 3010, Australia
| | - John B Furness
- Department of Anatomy and Neuroscience, University of Melbourne, Grattan Street, Parkville, VIC 3010, Australia
| | - Peter W Angus
- Department of Medicine, The University of Melbourne, Austin Health, Heidelberg, Melbourne, VIC 3084, Australia.,Department of Gastroenterology and Hepatology, Austin Health, Austin Hospital, Heidelberg, Melbourne, VIC 3084, Australia
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367
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Emami SR, Jafari M, Haghshenas R, Ravasi A. Impact of eight weeks endurance training on biochemical parameters and obesity-induced oxidative stress in high fat diet-fed rats. J Exerc Nutrition Biochem 2016; 20:29-35. [PMID: 27298810 PMCID: PMC4899893 DOI: 10.20463/jenb.2016.03.20.1.5] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 01/31/2016] [Accepted: 03/09/2016] [Indexed: 01/24/2023] Open
Abstract
[Purpose] High-fat diets (HFD) feeding is an important risk factor for obesity that is accompanied with metabolic syndrome. Appropriate exercise is recommended for obesity prevention. The molecular mechanisms and cellular pathways activated in response to HFD and exercise are not well understood. The purpose of this study was to investigate the effect of 8 weeks endurance training on some plasma biochemical parameters and oxidative stress in HFD induced obese rats. [Methods] Twenty-eight male Wistar rats were randomly divided into 4 groups: the standard diet (SD) group, endurance training group with a standard diet (ESD), HFD group, and endurance training group with high-fat diet (EHFD). After 8 weeks, blood samples were taken by cardiac puncture and plasma were used for determination of biochemical parameters and oxidative stress biomarkers. [Results] HFD significantly increased malondialdehyde level and decreased the activities of superoxide dismutase, catalase, and glutathione S-transferase and the content of glutathione in the plasma. HFD also increased activities of aspartate transaminase, alanine transaminase, lactate dehydrogenase, as well as levels of total cholesterol, triglyceride and low-density-lipoprotein-cholesterol. However, endurance training showed protective effect on changes in these parameters. [Conclusion] These findings suggested that HFD alters the oxidant-antioxidant balance, as evidenced by reduction in the antioxidant enzymes activities and glutathione level and enhanced lipid peroxidation. Endurance training can be beneficial for the suppression of obesity-induced oxidative stress in HFD rats through modulating antioxidant defense system and reduces the risk of obesity-associated diseases.
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Affiliation(s)
- Seyed Reza Emami
- Department of Biochemistry, Faculty of Medicine, Baqiyatallah University of Medical Sciences, Tehran Iran
| | - Mahvash Jafari
- Exercise Physiology Research Center, Baqiyatallah University of Medical Sciences, Tehran Iran
| | | | - Aliasghar Ravasi
- Department of Exercise physiology, Faculty of Physical Education and Sports Science, University of Tehran, Tehran Iran
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368
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Denou E, Marcinko K, Surette MG, Steinberg GR, Schertzer JD. High-intensity exercise training increases the diversity and metabolic capacity of the mouse distal gut microbiota during diet-induced obesity. Am J Physiol Endocrinol Metab 2016; 310:E982-93. [PMID: 27117007 PMCID: PMC4935139 DOI: 10.1152/ajpendo.00537.2015] [Citation(s) in RCA: 165] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Accepted: 04/14/2016] [Indexed: 02/07/2023]
Abstract
Diet and exercise underpin the risk of obesity-related metabolic disease. Diet alters the gut microbiota, which contributes to aspects of metabolic disease during obesity. Repeated exercise provides metabolic benefits during obesity. We assessed whether exercise could oppose changes in the taxonomic and predicted metagenomic characteristics of the gut microbiota during diet-induced obesity. We hypothesized that high-intensity interval training (HIIT) would counteract high-fat diet (HFD)-induced changes in the microbiota without altering obesity in mice. Compared with chow-fed mice, an obesity-causing HFD decreased the Bacteroidetes-to-Firmicutes ratio and decreased the genetic capacity in the fecal microbiota for metabolic pathways such as the tricarboxylic acid (TCA) cycle. After HFD-induced obesity was established, a subset of mice were HIIT for 6 wk, which increased host aerobic capacity but did not alter body or adipose tissue mass. The effects of exercise training on the microbiota were gut segment dependent and more extensive in the distal gut. HIIT increased the alpha diversity and Bacteroidetes/Firmicutes ratio of the distal gut and fecal microbiota during diet-induced obesity. Exercise training increased the predicted genetic capacity related to the TCA cycle among other aspects of metabolism. Strikingly, the same microbial metabolism indexes that were increased by exercise were all decreased in HFD-fed vs. chow diet-fed mice. Therefore, exercise training directly opposed some of the obesity-related changes in gut microbiota, including lower metagenomic indexes of metabolism. Some host and microbial pathways appeared similarly affected by exercise. These exercise- and diet-induced microbiota interactions can be captured in feces.
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Affiliation(s)
- Emmanuel Denou
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Katarina Marcinko
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada; and
| | - Michael G Surette
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada; Department of Medicine, McMaster University, Hamilton, Ontario, Canada; and Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - Gregory R Steinberg
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada; Department of Medicine, McMaster University, Hamilton, Ontario, Canada; and
| | - Jonathan D Schertzer
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada; Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Ontario, Canada
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369
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Esgalhado M, Borges NA, Mafra D. Could physical exercise help modulate the gut microbiota in chronic kidney disease? Future Microbiol 2016; 11:699-707. [DOI: 10.2217/fmb.16.12] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Chronic kidney disease (CKD) patients have several metabolic disorders caused by chronic oxidative stress and inflammation. The imbalance of gut microbiota has been identified as a factor that may contribute to the development of these disorders, which can promote cardiovascular disease in CKD patients. Among several strategies to modulate gut microbiota, physical exercise could represent a new nonpharmacological approach. Although exercise can reduce cardiovascular risk in CKD patients through its beneficial effects on oxidative stress and inflammation, there are no available data regarding the relationship between exercise and modulation of gut microbiota in CKD patients. This review is intended to provide a brief overview of the hypothesis regarding gut microbiota modulation through physical exercise, with a particular emphasis on CKD.
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Affiliation(s)
- Marta Esgalhado
- Graduate Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói, Rio de Janeiro (RJ), Brazil
| | - Natália A Borges
- Graduate Program in Medical Sciences, Fluminense Federal University (UFF), Niterói, Rio de Janeiro (RJ), Brazil
| | - Denise Mafra
- Graduate Program in Cardiovascular Sciences, Fluminense Federal University (UFF), Niterói, Rio de Janeiro (RJ), Brazil
- Graduate Program in Medical Sciences, Fluminense Federal University (UFF), Niterói, Rio de Janeiro (RJ), Brazil
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370
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Khan I, Azhar EI, Abbas AT, Kumosani T, Barbour EK, Raoult D, Yasir M. Metagenomic Analysis of Antibiotic-Induced Changes in Gut Microbiota in a Pregnant Rat Model. Front Pharmacol 2016; 7:104. [PMID: 27199748 PMCID: PMC4849429 DOI: 10.3389/fphar.2016.00104] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 04/07/2016] [Indexed: 12/28/2022] Open
Abstract
Food and Drug Administration (FDA, USA)-approved category B antibiotics are commonly prescribed to treat infections during pregnancy. The aim of this study was to investigate antibiotic-induced changes in gut microbiota (GM) that occur during pregnancy. The 16S rRNA amplicon deep-sequencing method was used to analyze the effect of category B antibiotics (azithromycin, amoxicillin and cefaclor) on GM during pregnancy using a rat model. The GM composition was substantially modulated by pregnancy and antibiotics administration. Firmicutes, Bacteroidetes, Proteobacteria, Chlamydiae, Actinobacteria, and Cyanobacteria were the dominant phyla. Antibiotic treatment during pregnancy increased the relative abundance of Proteobacteria and reduced Firmicutes. The genera Shigella, Streptococcus, Candidatus Arthromitus, and Helicobacter were significantly (p < 0.05) more abundant during pregnancy. Antibiotics significantly (p < 0.05) reduced the relative abundance of Lactobacillus but increased that of Enterobacter. There was a significant (p < 0.05) decrease in Lactobacillus sp., Lactobacillus gallinarum and Lactobacillus crispatus during pregnancy. Antibiotic treatment reduced bacterial diversity; the lowest number of operational taxonomic units (OTUs) were detected in the cefaclor-treated groups. Antibiotics significantly (p < 0.05) promoted weight gain during pregnancy, and increased relative abundance of Shigella sonnei, Enterococcus hormaechei, and Acinetobacter sp. GM perturbations were accompanied by increases in Proteobacteria abundance and weight gain in pregnancy following antibiotic treatment.
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Affiliation(s)
- Imran Khan
- Biochemistry Department, Faculty of Science, King Abdulaziz UniversityJeddah, Saudi Arabia; Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz UniversityJeddah, Saudi Arabia
| | - Esam I Azhar
- Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz UniversityJeddah, Saudi Arabia; Medical Laboratory Technology Department, Faculty of Applied Medical Sciences, King Abdulaziz UniversityJeddah, Saudi Arabia
| | - Aymn T Abbas
- Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz UniversityJeddah, Saudi Arabia; Biotechnology Research Laboratories, Gastroenterology Surgery Center, Mansoura UniversityMansoura, Egypt
| | - Taha Kumosani
- Biochemistry Department, Faculty of Science, King Abdulaziz UniversityJeddah, Saudi Arabia; Biochemistry Department, Faculty of Science - Production of Bioproducts for Industrial Applications Research Group - Experimental Biochemistry Unit, King Fahd Medical Research Center King Abdulaziz UniversityJeddah, Saudi Arabia
| | - Elie K Barbour
- Faculty of Agricultural and Food Sciences, American University of BeirutBeirut, Lebanon; Adjunct to Biochemistry Department, Faculty of Science - Production of Bioproducts for Industrial Applications Research Group, King Abdulaziz UniversityJeddah, Saudi Arabia
| | - Didier Raoult
- Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz UniversityJeddah, Saudi Arabia; URMITE CNRS-IRD 198 UMR 6236, Faculté de Médecine et de Pharmacie, Université de la MéditerranéeMarseille, France
| | - Muhammad Yasir
- Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University Jeddah, Saudi Arabia
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371
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Effect of Dietary Oxalate on the Gut Microbiota of the Mammalian Herbivore Neotoma albigula. Appl Environ Microbiol 2016; 82:2669-2675. [PMID: 26896138 DOI: 10.1128/aem.00216-16] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 02/18/2016] [Indexed: 01/17/2023] Open
Abstract
Diet is one of the primary drivers that sculpts the form and function of the mammalian gut microbiota. However, the enormous taxonomic and metabolic diversity held within the gut microbiota makes it difficult to isolate specific diet-microbe interactions. The objective of the current study was to elucidate interactions between the gut microbiota of the mammalian herbivore Neotoma albigula and dietary oxalate, a plant secondary compound (PSC) degraded exclusively by the gut microbiota. We quantified oxalate degradation in N. albigula fed increasing amounts of oxalate over time and tracked the response of the fecal microbiota using high-throughput sequencing. The amount of oxalate degraded in vivo was linearly correlated with the amount of oxalate consumed. The addition of dietary oxalate was found to impact microbial species diversity by increasing the representation of certain taxa, some of which are known to be capable of degrading oxalate (e.g., Oxalobacter spp.). Furthermore, the relative abundances of 117 operational taxonomic units (OTU) exhibited a significant correlation with oxalate consumption. The results of this study indicate that dietary oxalate induces complex interactions within the gut microbiota that include an increase in the relative abundance of a community of bacteria that may contribute either directly or indirectly to oxalate degradation in mammalian herbivores.
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372
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Gut Microbiota and Lifestyle Interventions in NAFLD. Int J Mol Sci 2016; 17:447. [PMID: 27023533 PMCID: PMC4848903 DOI: 10.3390/ijms17040447] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 03/14/2016] [Accepted: 03/15/2016] [Indexed: 02/07/2023] Open
Abstract
The human digestive system harbors a diverse and complex community of microorganisms that work in a symbiotic fashion with the host, contributing to metabolism, immune response and intestinal architecture. However, disruption of a stable and diverse community, termed "dysbiosis", has been shown to have a profound impact upon health and disease. Emerging data demonstrate dysbiosis of the gut microbiota to be linked with non-alcoholic fatty liver disease (NAFLD). Although the exact mechanism(s) remain unknown, inflammation, damage to the intestinal membrane, and translocation of bacteria have all been suggested. Lifestyle intervention is undoubtedly effective at improving NAFLD, however, not all patients respond to these in the same manner. Furthermore, studies investigating the effects of lifestyle interventions on the gut microbiota in NAFLD patients are lacking. A deeper understanding of how different aspects of lifestyle (diet/nutrition/exercise) affect the host-microbiome interaction may allow for a more tailored approach to lifestyle intervention. With gut microbiota representing a key element of personalized medicine and nutrition, we review the effects of lifestyle interventions (diet and physical activity/exercise) on gut microbiota and how this impacts upon NAFLD prognosis.
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373
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Campbell SC, Wisniewski PJ, Noji M, McGuinness LR, Häggblom MM, Lightfoot SA, Joseph LB, Kerkhof LJ. The Effect of Diet and Exercise on Intestinal Integrity and Microbial Diversity in Mice. PLoS One 2016; 11:e0150502. [PMID: 26954359 PMCID: PMC4783017 DOI: 10.1371/journal.pone.0150502] [Citation(s) in RCA: 165] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 02/15/2016] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND The gut microbiota is now known to play an important role contributing to inflammatory-based chronic diseases. This study examined intestinal integrity/inflammation and the gut microbial communities in sedentary and exercising mice presented with a normal or high-fat diet. METHODS Thirty-six, 6-week old C57BL/6NTac male mice were fed a normal or high-fat diet for 12-weeks and randomly assigned to exercise or sedentary groups. After 12 weeks animals were sacrificed and duodenum/ileum tissues were fixed for immunohistochemistry for occludin, E-cadherin, and cyclooxygenase-2 (COX-2). The bacterial communities were assayed in fecal samples using terminal restriction fragment length polymorphism (TRFLP) analysis and pyrosequencing of 16S rRNA gene amplicons. RESULTS Lean sedentary (LS) mice presented normal histologic villi while obese sedentary (OS) mice had similar villi height with more than twice the width of the LS animals. Both lean (LX) and obese exercise (OX) mice duodenum and ileum were histologically normal. COX-2 expression was the greatest in the OS group, followed by LS, LX and OX. The TRFLP and pyrosequencing indicated that members of the Clostridiales order were predominant in all diet groups. Specific phylotypes were observed with exercise, including Faecalibacterium prausnitzi, Clostridium spp., and Allobaculum spp. CONCLUSION These data suggest that exercise has a strong influence on gut integrity and host microbiome which points to the necessity for more mechanistic studies of the interactions between specific bacteria in the gut and its host.
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Affiliation(s)
- Sara C. Campbell
- Department of Exercise Science and Sports Studies, Rutgers University, New Brunswick, NJ 08901, United States of America
| | - Paul J. Wisniewski
- Department of Exercise Science and Sports Studies, Rutgers University, New Brunswick, NJ 08901, United States of America
| | - Michael Noji
- Department of Exercise Science and Sports Studies, Rutgers University, New Brunswick, NJ 08901, United States of America
| | - Lora R. McGuinness
- Department of Marine and Coastal Sciences, Rutgers University, New Brunswick, NJ 08901, United States of America
| | - Max M. Häggblom
- Department of Biochemistry and Microbiology, Rutgers University, New Brunswick, NJ 08901, United States of America
| | | | - Laurie B. Joseph
- Department of Pharmacology and Toxicology, Rutgers University, New Brunswick, NJ 08901, United States of America
| | - Lee J. Kerkhof
- Department of Marine and Coastal Sciences, Rutgers University, New Brunswick, NJ 08901, United States of America
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374
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Abstract
PURPOSE OF REVIEW Exercise and gut symptomatology have long been connected. The possibility that regular exercise fosters intestinal health and function has been somewhat overlooked in the scientific literature. In this review, we summarize current knowledge and discuss a selection of recent, relevant, and innovative studies, hypotheses and reviews that elucidate a complex topic. RECENT FINDINGS The multiorgan benefits of regular exercise are extensive. When taken in moderation, these benefits transcend improved cardio-respiratory fitness and likely reach the gut in a metabolic, immunological, neural, and microbial manner. This is applicable in both health and disease. However, further work is required to provide safe, effective recommendations on physical activity in specific gastrointestinal conditions. SUMMARY Challenging methodology investigating the relationship between exercise and gut health should not deter from exploring exercise in the promotion of gastrointestinal health.
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375
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Liu HX, Rocha CS, Dandekar S, Wan YJY. Functional analysis of the relationship between intestinal microbiota and the expression of hepatic genes and pathways during the course of liver regeneration. J Hepatol 2016; 64:641-50. [PMID: 26453969 PMCID: PMC4761311 DOI: 10.1016/j.jhep.2015.09.022] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 09/08/2015] [Accepted: 09/19/2015] [Indexed: 12/26/2022]
Abstract
BACKGROUND & AIMS The pathways regulating liver regeneration have been extensively studied within the liver. However, the signaling contribution derived from the gut microbiota to liver regeneration is poorly understood. METHODS Microbiota and expression of hepatic genes in regenerating livers obtained from mice at 0h to 9days post 2/3 partial hepatectomy were temporally profiled to establish their interactive relationships. RESULTS Partial hepatectomy led to rapid changes in gut microbiota that was reflected in an increased abundance of Bacteroidetes S24-7 and Rikenellaceae and decreased abundance of Firmicutes Clostridiales, Lachnospiraceae, and Ruminococcaceae. Phylogenetic Investigation of Communities by Reconstruction of Unobserved States (PICRUSt) was used to infer biological functional changes of the shifted microbiota. RNA-sequencing data revealed 6125 genes with more than a 2-fold difference in their expression levels during regeneration. By analyzing their expression pattern, six uniquely expressed patterns were observed. In addition, there were significant correlations between hepatic gene expression profiles and shifted bacterial populations during regeneration. Moreover, hepatic metabolism and immune function were closely associated with the abundance of Ruminococcacea, Lachnospiraceae, and S24-7. Bile acid profile was analyzed because bacterial enzymes produce bile acids that significantly impact hepatocyte proliferation. The data revealed that specific bacteria were closely associated with the concentration of certain bile acids and expression of hepatic genes. CONCLUSIONS The presented data established, for the first time, an intimate relationship between intestinal microbiota and the expression of hepatic genes in regenerating livers.
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Affiliation(s)
- Hui-Xin Liu
- Department of Medical Pathology and Laboratory Medicine, University of California, Davis, Sacramento, CA
| | - Clarissa Santos Rocha
- Department of Medical Microbiology and Immunology, University of California, Davis, Davis, CA
| | - Satya Dandekar
- Department of Medical Microbiology and Immunology, University of California, Davis, Davis, CA
| | - Yu-Jui Yvonne Wan
- Department of Medical Pathology and Laboratory Medicine, University of California, Davis, Sacramento, CA, USA.
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376
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Cerdá B, Pérez M, Pérez-Santiago JD, Tornero-Aguilera JF, González-Soltero R, Larrosa M. Gut Microbiota Modification: Another Piece in the Puzzle of the Benefits of Physical Exercise in Health? Front Physiol 2016; 7:51. [PMID: 26924990 PMCID: PMC4757670 DOI: 10.3389/fphys.2016.00051] [Citation(s) in RCA: 131] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Accepted: 02/03/2016] [Indexed: 12/11/2022] Open
Abstract
Regular physical exercise provides many health benefits, protecting against the development of chronic diseases, and improving quality of life. Some of the mechanisms by which exercise provides these effects are the promotion of an anti-inflammatory state, reinforcement of the neuromuscular function, and activation of the hypothalamic-pituitary-adrenal (HPA) axis. Recently, it has been proposed that physical exercise is able to modify gut microbiota, and thus this could be another factor by which exercise promotes well-being, since gut microbiota appears to be closely related to health and disease. The purpose of this paper is to review the recent findings on gut microbiota modification by exercise, proposing several mechanisms by which physical exercise might cause changes in gut microbiota.
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Affiliation(s)
- Begoña Cerdá
- Research Group on Nutrition, Physical Activity and Health, School of Doctoral Studies and Research, Universidad Europea de Madrid Madrid, Spain
| | - Margarita Pérez
- Research Group on Nutrition, Physical Activity and Health, School of Doctoral Studies and Research, Universidad Europea de Madrid Madrid, Spain
| | - Jennifer D Pérez-Santiago
- Research Group on Nutrition, Physical Activity and Health, School of Doctoral Studies and Research, Universidad Europea de Madrid Madrid, Spain
| | - Jose F Tornero-Aguilera
- Research Group on Nutrition, Physical Activity and Health, School of Doctoral Studies and Research, Universidad Europea de Madrid Madrid, Spain
| | - Rocío González-Soltero
- Research Group on Nutrition, Physical Activity and Health, School of Doctoral Studies and Research, Universidad Europea de Madrid Madrid, Spain
| | - Mar Larrosa
- Research Group on Nutrition, Physical Activity and Health, School of Doctoral Studies and Research, Universidad Europea de Madrid Madrid, Spain
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377
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Early‐life exercise may promote lasting brain and metabolic health through gut bacterial metabolites. Immunol Cell Biol 2016; 94:151-7. [DOI: 10.1038/icb.2015.113] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 11/28/2015] [Accepted: 11/29/2015] [Indexed: 12/11/2022]
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378
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Dugas LR, Fuller M, Gilbert J, Layden BT. The obese gut microbiome across the epidemiologic transition. Emerg Themes Epidemiol 2016; 13:2. [PMID: 26759600 PMCID: PMC4710045 DOI: 10.1186/s12982-015-0044-5] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Accepted: 12/15/2015] [Indexed: 12/13/2022] Open
Abstract
The obesity epidemic has emerged over the past few decades and is thought to be a result of both genetic and environmental factors. A newly identified factor, the gut microbiota, which is a bacterial ecosystem residing within the gastrointestinal tract of humans, has now been implicated in the obesity epidemic. Importantly, this bacterial community is impacted by external environmental factors through a variety of undefined mechanisms. We focus this review on how the external environment may impact the gut microbiota by considering, the host’s geographic location ‘human geography’, and behavioral factors (diet and physical activity). Moreover, we explore the relationship between the gut microbiota and obesity with these external factors. And finally, we highlight here how an epidemiologic model can be utilized to elucidate causal relationships between the gut microbiota and external environment independently and collectively, and how this will help further define this important new factor in the obesity epidemic.
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Affiliation(s)
- Lara R Dugas
- Public Health Sciences, Stritch School of Medicine, Loyola University Chicago, 2160 S. 1st Ave, Maywood, IL 60153 USA
| | - Miles Fuller
- Division of Endocrinology, Metabolism and Molecular Medicine, Northwestern University, Evanston, USA
| | - Jack Gilbert
- Argonne National Laboratory, Biosciences Department, Institute for Genomic and Systems Biology, 9700 South Cass Avenue, Argonne, IL 60439 USA ; Department of Ecology and Evolution, University of Chicago, 1101 E 57th Street, Chicago, IL 60637 USA ; Marine Biological Laboratory, 7 MBL Street, Woods Hole, MA 02543 USA ; College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058 China
| | - Brian T Layden
- Division of Endocrinology, Metabolism and Molecular Medicine, Northwestern University, Evanston, USA ; Jesse Brown Veterans Affairs Medical Center, Chicago, IL USA
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379
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Zheng J, Xiao X, Zhang Q, Yu M, Xu J, Qi C, Wang T. The programming effects of nutrition-induced catch-up growth on gut microbiota and metabolic diseases in adult mice. Microbiologyopen 2016; 5:296-306. [PMID: 26749443 PMCID: PMC4831474 DOI: 10.1002/mbo3.328] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 11/04/2015] [Accepted: 11/15/2015] [Indexed: 12/12/2022] Open
Abstract
Substantial evidence indicated that catch‐up growth could increase the susceptibility to obesity, insulin resistance, and type 2 diabetes mellitus in adulthood. However, investigations into the “programming” effects of catch‐up growth on gut microbiota in the offspring are limited. C57/BL6 mice were fed on either low protein (LP) or normal chow (NC) diet throughout gestation and lactation. Then, the offspring were randomly weaned to either NC or high fat (HF) diet until 32 weeks of age, generating four experimental groups: NC‐NC, NC‐HF, LP‐NC, and LP‐HF. Metabolic parameters and gut microbiota were examined in the offspring. It showed that the NC‐HF and LP‐HF offspring displayed higher body weight (P < 0.05), impaired glucose tolerance (P < 0.001), and elevated serum lipids (P < 0.05) at 32 weeks of age. Both the operational taxonomic units (OTUs) and the Shannon indexes (P < 0.05) showed significantly lower microbial diversity in NC‐HF and LP‐HF offspring. There were significant variations in the compositions of gut microbiota in the NC‐HF and LP‐HF offspring, compared with NC‐NC offspring (P < 0.05). Furthermore, it indicated Lactobacillus percentage was negatively associated with blood glucose concentrations of intraperitoneal glucose tolerance test (r = −0.886, P = 0.019). In conclusion, catch‐up growth predisposes the offspring to gut microbiota perturbation, obesity, impaired glucose tolerance, insulin resistance, and dyslipidemia. Our study is novel in showing the “programming” effects of nutrition‐induced catch‐up growth on gut microbiota and metabolic diseases in later life.
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Affiliation(s)
- Jia Zheng
- Department of EndocrinologyKey Laboratory of EndocrinologyMinistry of HealthPeking Union Medical College HospitalDiabetes Research Center of Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing100730China
| | - Xinhua Xiao
- Department of EndocrinologyKey Laboratory of EndocrinologyMinistry of HealthPeking Union Medical College HospitalDiabetes Research Center of Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing100730China
| | - Qian Zhang
- Department of EndocrinologyKey Laboratory of EndocrinologyMinistry of HealthPeking Union Medical College HospitalDiabetes Research Center of Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing100730China
| | - Miao Yu
- Department of EndocrinologyKey Laboratory of EndocrinologyMinistry of HealthPeking Union Medical College HospitalDiabetes Research Center of Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing100730China
| | - Jianping Xu
- Department of EndocrinologyKey Laboratory of EndocrinologyMinistry of HealthPeking Union Medical College HospitalDiabetes Research Center of Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing100730China
| | - Cuijuan Qi
- Department of EndocrinologyKey Laboratory of EndocrinologyMinistry of HealthPeking Union Medical College HospitalDiabetes Research Center of Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing100730China
| | - Tong Wang
- Department of EndocrinologyKey Laboratory of EndocrinologyMinistry of HealthPeking Union Medical College HospitalDiabetes Research Center of Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing100730China
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380
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Kelley ST, Skarra DV, Rivera AJ, Thackray VG. The Gut Microbiome Is Altered in a Letrozole-Induced Mouse Model of Polycystic Ovary Syndrome. PLoS One 2016; 11:e0146509. [PMID: 26731268 PMCID: PMC4701222 DOI: 10.1371/journal.pone.0146509] [Citation(s) in RCA: 118] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 12/19/2015] [Indexed: 01/12/2023] Open
Abstract
Women with polycystic ovary syndrome (PCOS) have reproductive and metabolic abnormalities that result in an increased risk of infertility, diabetes and cardiovascular disease. The large intestine contains a complex community of microorganisms (the gut microbiome) that is dysregulated in humans with obesity and type 2 diabetes. Using a letrozole-induced PCOS mouse model, we demonstrated significant diet-independent changes in the gut microbial community, suggesting that gut microbiome dysbiosis may also occur in PCOS women. Letrozole treatment was associated with a time-dependent shift in the gut microbiome and a substantial reduction in overall species and phylogenetic richness. Letrozole treatment also correlated with significant changes in the abundance of specific Bacteroidetes and Firmicutes previously implicated in other mouse models of metabolic disease in a time-dependent manner. Our results suggest that the hyperandrogenemia observed in PCOS may significantly alter the gut microbiome independently of diet.
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Affiliation(s)
- Scott T. Kelley
- Department of Biology, San Diego State University, San Diego, CA, United States of America
| | - Danalea V. Skarra
- Department of Reproductive Medicine, University of California San Diego, La Jolla, CA, United States of America
| | - Alissa J. Rivera
- Department of Reproductive Medicine, University of California San Diego, La Jolla, CA, United States of America
| | - Varykina G. Thackray
- Department of Reproductive Medicine, University of California San Diego, La Jolla, CA, United States of America
- Center for Reproductive Science and Medicine, University of California San Diego, La Jolla, CA, United States of America
- * E-mail:
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381
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Liang X, Bittinger K, Li X, Abernethy DR, Bushman FD, FitzGerald GA. Bidirectional interactions between indomethacin and the murine intestinal microbiota. eLife 2015; 4:e08973. [PMID: 26701907 PMCID: PMC4755745 DOI: 10.7554/elife.08973] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 12/16/2015] [Indexed: 12/19/2022] Open
Abstract
The vertebrate gut microbiota have been implicated in the metabolism of xenobiotic compounds, motivating studies of microbe-driven metabolism of clinically important drugs. Here, we studied interactions between the microbiota and indomethacin, a nonsteroidal anti-inflammatory drug (NSAID) that inhibits cyclooxygenases (COX) -1 and -2. Indomethacin was tested in both acute and chronic exposure models in mice at clinically relevant doses, which suppressed production of COX-1- and COX-2-derived prostaglandins and caused small intestinal (SI) damage. Deep sequencing analysis showed that indomethacin exposure was associated with alterations in the structure of the intestinal microbiota in both dosing models. Perturbation of the intestinal microbiome by antibiotic treatment altered indomethacin pharmacokinetics and pharmacodynamics, which is probably the result of reduced bacterial β-glucuronidase activity. Humans show considerable inter-individual differences in their microbiota and their responses to indomethacin - thus, the drug-microbe interactions described here provide candidate mediators of individualized drug responses.
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Affiliation(s)
- Xue Liang
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, United States
| | - Kyle Bittinger
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, United States
| | - Xuanwen Li
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, United States
| | - Darrell R Abernethy
- Office of Clinical Pharmacology, Food and Drug Administration, Silver Spring, United States
| | - Frederic D Bushman
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, United States
| | - Garret A FitzGerald
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, United States
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382
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Changes in Gut and Plasma Microbiome following Exercise Challenge in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS). PLoS One 2015; 10:e0145453. [PMID: 26683192 PMCID: PMC4684203 DOI: 10.1371/journal.pone.0145453] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 12/03/2015] [Indexed: 12/11/2022] Open
Abstract
Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a disease characterized by intense and debilitating fatigue not due to physical activity that has persisted for at least 6 months, post-exertional malaise, unrefreshing sleep, and accompanied by a number of secondary symptoms, including sore throat, memory and concentration impairment, headache, and muscle/joint pain. In patients with post-exertional malaise, significant worsening of symptoms occurs following physical exertion and exercise challenge serves as a useful method for identifying biomarkers for exertion intolerance. Evidence suggests that intestinal dysbiosis and systemic responses to gut microorganisms may play a role in the symptomology of ME/CFS. As such, we hypothesized that post-exertion worsening of ME/CFS symptoms could be due to increased bacterial translocation from the intestine into the systemic circulation. To test this hypothesis, we collected symptom reports and blood and stool samples from ten clinically characterized ME/CFS patients and ten matched healthy controls before and 15 minutes, 48 hours, and 72 hours after a maximal exercise challenge. Microbiomes of blood and stool samples were examined. Stool sample microbiomes differed between ME/CFS patients and healthy controls in the abundance of several major bacterial phyla. Following maximal exercise challenge, there was an increase in relative abundance of 6 of the 9 major bacterial phyla/genera in ME/CFS patients from baseline to 72 hours post-exercise compared to only 2 of the 9 phyla/genera in controls (p = 0.005). There was also a significant difference in clearance of specific bacterial phyla from blood following exercise with high levels of bacterial sequences maintained at 72 hours post-exercise in ME/CFS patients versus clearance in the controls. These results provide evidence for a systemic effect of an altered gut microbiome in ME/CFS patients compared to controls. Upon exercise challenge, there were significant changes in the abundance of major bacterial phyla in the gut in ME/CFS patients not observed in healthy controls. In addition, compared to controls clearance of bacteria from the blood was delayed in ME/CFS patients following exercise. These findings suggest a role for an altered gut microbiome and increased bacterial translocation following exercise in ME/CFS patients that may account for the profound post-exertional malaise experienced by ME/CFS patients.
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383
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Cook MD, Allen JM, Pence BD, Wallig MA, Gaskins HR, White BA, Woods JA. Exercise and gut immune function: evidence of alterations in colon immune cell homeostasis and microbiome characteristics with exercise training. Immunol Cell Biol 2015; 94:158-63. [PMID: 26626721 DOI: 10.1038/icb.2015.108] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Revised: 11/05/2015] [Accepted: 11/05/2015] [Indexed: 12/16/2022]
Abstract
There is robust evidence that habitual physical activity is anti-inflammatory and protective against developing chronic inflammatory disease. Much less is known about the effects of habitual moderate exercise in the gut, the compartment that has the greatest immunological responsibility and interactions with the intestinal microbiota. The link between the two has become evident, as recent studies have linked intestinal dysbiosis, or the disproportionate balance of beneficial to pathogenic microbes, with increased inflammatory disease susceptibility. Limited animal and human research findings imply that exercise may have a beneficial role in preventing and ameliorating such diseases by having an effect on gut immune function and, recently, microbiome characteristics. Emerging data from our laboratory show that different forms of exercise training differentially impact the severity of intestinal inflammation during an inflammatory insult (for example, ulcerative colitis) and may be jointly related to gut immune cell homeostasis and microbiota-immune interactions. The evidence we review and present will provide data in support of rigorous investigations concerning the effects of habitual exercise on gut health and disease.
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Affiliation(s)
- Marc D Cook
- Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, IL, USA
| | - Jacob M Allen
- Department of Kinesiology and Community Health, University of Illinois Urbana-Champaign, Urbana, IL, USA.,Integrative Immunology and Behavior Program, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Brandt D Pence
- Department of Kinesiology and Community Health, University of Illinois Urbana-Champaign, Urbana, IL, USA.,Integrative Immunology and Behavior Program, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Matthew A Wallig
- College of Veterinarian Medicine, University of Illinois Urbana-Champaign, Urbana, IL, USA.,Department of Pathobiology, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - H Rex Gaskins
- Department of Animal Sciences, University of Illinois Urbana-Champaign, Urbana, IL, USA.,Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, USA.,Department of Nutritional Sciences, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Bryan A White
- Department of Animal Sciences, University of Illinois Urbana-Champaign, Urbana, IL, USA.,Institute for Genomic Biology, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Jeffrey A Woods
- Department of Kinesiology and Community Health, University of Illinois Urbana-Champaign, Urbana, IL, USA.,Integrative Immunology and Behavior Program, University of Illinois Urbana-Champaign, Urbana, IL, USA.,Department of Nutritional Sciences, University of Illinois Urbana-Champaign, Urbana, IL, USA
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384
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Peat CM, Kleiman SC, Bulik CM, Carroll IM. The Intestinal Microbiome in Bariatric Surgery Patients. EUROPEAN EATING DISORDERS REVIEW 2015; 23:496-503. [PMID: 26426680 DOI: 10.1002/erv.2400] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 07/30/2015] [Indexed: 12/19/2022]
Abstract
With nearly 39% of the worldwide adult population classified as obese, much of the globe is facing a serious public health challenge. Increasing rates of obesity, coupled with the failure of many behavioural and pharmacological interventions, have contributed to a rise in popularity of bariatric surgery as a treatment for obesity. Surgery-mediated weight loss was initially thought to be a direct result of mechanical alterations causing restriction and calorie malabsorption. However, the mounting evidence suggests that indirect factors influence the accumulation and storage of fat in patients that have undergone this procedure. Given the established impact the intestinal microbiota has on adiposity, it is likely that this complex enteric microbial community contributes to surgery-mediated weight loss and maintenance of weight loss postsurgery. In this review, we discuss the physiological and psychological traits exhibited by bariatric surgery candidates that can be influenced by the intestinal microbiota. Additionally, we detail the studies that investigated the impact of bariatric surgery on the intestinal microbiota in humans and mouse models of this procedure.
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Affiliation(s)
- Christine M Peat
- Department of Psychiatry, University of North Carolina at Chapel Hill, USA
| | - Susan C Kleiman
- Department of Nutrition, University of North Carolina at Chapel Hill, USA
| | - Cynthia M Bulik
- Department of Psychiatry, University of North Carolina at Chapel Hill, USA.,Department of Nutrition, University of North Carolina at Chapel Hill, USA.,Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Ian M Carroll
- Department of Medicine, University of North Carolina at Chapel Hill, USA.,Center for Gastrointestinal Biology and Disease (CGIBD), University of North Carolina at Chapel Hill, USA
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385
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Liu TW, Park YM, Holscher HD, Padilla J, Scroggins RJ, Welly R, Britton SL, Koch LG, Vieira-Potter VJ, Swanson KS. Physical Activity Differentially Affects the Cecal Microbiota of Ovariectomized Female Rats Selectively Bred for High and Low Aerobic Capacity. PLoS One 2015; 10:e0136150. [PMID: 26301712 PMCID: PMC4547806 DOI: 10.1371/journal.pone.0136150] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 07/17/2015] [Indexed: 01/15/2023] Open
Abstract
The gut microbiota is considered a relevant factor in obesity and associated metabolic diseases, for which postmenopausal women are particularly at risk. Increasing physical activity has been recognized as an efficacious approach to prevent or treat obesity, yet the impact of physical activity on the microbiota remains under-investigated. We examined the impacts of voluntary exercise on host metabolism and gut microbiota in ovariectomized (OVX) high capacity (HCR) and low capacity running (LCR) rats. HCR and LCR rats (age = 27wk) were OVX and fed a high-fat diet (45% kcal fat) ad libitum and housed in cages equipped with (exercise, EX) or without (sedentary, SED) running wheels for 11wk (n = 7-8/group). We hypothesized that increased physical activity would hinder weight gain, increase metabolic health and shift the microbiota of LCR rats, resulting in populations more similar to that of HCR rats. Animals were compared for characteristic metabolic parameters including body composition, lipid profile and energy expenditure; whereas cecal digesta were collected for DNA extraction. 16S rRNA gene-based amplicon Illumina MiSeq sequencing was performed, followed by analysis using QIIME 1.8.0 to assess cecal microbiota. Voluntary exercise decreased body and fat mass, and normalized fasting NEFA concentrations of LCR rats, despite only running one-third the distance of HCR rats. Exercise, however, increased food intake, weight gain and fat mass of HCR rats. Exercise clustered the gut microbial community of LCR rats, which separated them from the other groups. Assessments of specific taxa revealed significant (p<0.05) line by exercise interactions including shifts in the abundances of Firmicutes, Proteobacteria, and Cyanobacteria. Relative abundance of Christensenellaceae family was higher (p = 0.026) in HCR than LCR rats, and positively correlated (p<0.05) with food intake, body weight and running distance. These findings demonstrate that exercise differentially impacts host metabolism and gut microbial communities of female HCR and LCR rats without ovarian function.
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Affiliation(s)
- Tzu-Wen Liu
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
| | - Young-Min Park
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, United States of America
| | - Hannah D. Holscher
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
| | - Jaume Padilla
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, United States of America
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri, United States of America
- Department of Child Health, University of Missouri, Columbia, Missouri, United States of America
| | - Rebecca J. Scroggins
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, United States of America
| | - Rebecca Welly
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, United States of America
| | - Steven L. Britton
- Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan, United States of America
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Lauren G. Koch
- Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan, United States of America
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Victoria J. Vieira-Potter
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri, United States of America
| | - Kelly S. Swanson
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America
- * E-mail:
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386
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Gall A, Fero J, McCoy C, Claywell BC, Sanchez CA, Blount PL, Li X, Vaughan TL, Matsen FA, Reid BJ, Salama NR. Bacterial Composition of the Human Upper Gastrointestinal Tract Microbiome Is Dynamic and Associated with Genomic Instability in a Barrett's Esophagus Cohort. PLoS One 2015; 10:e0129055. [PMID: 26076489 PMCID: PMC4468150 DOI: 10.1371/journal.pone.0129055] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 05/04/2015] [Indexed: 12/19/2022] Open
Abstract
Background The incidence of esophageal adenocarcinoma (EAC) has increased nearly five-fold over the last four decades in the United States. Barrett’s esophagus, the replacement of the normal squamous epithelial lining with a mucus-secreting columnar epithelium, is the only known precursor to EAC. Like other parts of the gastrointestinal (GI) tract, the esophagus hosts a variety of bacteria and comparisons among published studies suggest bacterial communities in the stomach and esophagus differ. Chronic infection with Helicobacter pylori in the stomach has been inversely associated with development of EAC, but the mechanisms underlying this association remain unclear. Methodology The bacterial composition in the upper GI tract was characterized in a subset of participants (n=12) of the Seattle Barrett’s Esophagus Research cohort using broad-range 16S PCR and pyrosequencing of biopsy and brush samples collected from squamous esophagus, Barrett’s esophagus, stomach corpus and stomach antrum. Three of the individuals were sampled at two separate time points. Prevalence of H. pylori infection and subsequent development of aneuploidy (n=339) and EAC (n=433) was examined in a larger subset of this cohort. Results/Significance Within individuals, bacterial communities of the stomach and esophagus showed overlapping community membership. Despite closer proximity, the stomach antrum and corpus communities were less similar than the antrum and esophageal samples. Re-sampling of study participants revealed similar upper GI community membership in two of three cases. In this Barrett’s esophagus cohort, Streptococcus and Prevotella species dominate the upper GI and the ratio of these two species is associated with waist-to-hip ratio and hiatal hernia length, two known EAC risk factors in Barrett’s esophagus. H. pylori-positive individuals had a significantly decreased incidence of aneuploidy and a non-significant trend toward lower incidence of EAC.
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Affiliation(s)
- Alevtina Gall
- Molecular and Cellular Biology Graduate Program, University of Washington, Seattle, Washington, United States of America
- Human Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Jutta Fero
- Human Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Connor McCoy
- Divisions of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Program in Computational Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Brian C. Claywell
- Divisions of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Program in Computational Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Carissa A. Sanchez
- Human Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Patricia L. Blount
- Divisions of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Department of Medicine, University of Washington School of Medicine, Seattle, Washington, United States of America
| | - Xiaohong Li
- Human Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Divisions of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Thomas L. Vaughan
- Divisions of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Department of Epidemiology, University of Washington, Seattle, Washington, United States of America
| | - Frederick A. Matsen
- Divisions of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Program in Computational Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Brian J. Reid
- Human Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Divisions of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Department of Medicine, University of Washington School of Medicine, Seattle, Washington, United States of America
- Department of Genome Sciences, University of Washington, Seattle, Washington, United States of America
| | - Nina R. Salama
- Human Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
- Department of Microbiology, University of Washington School of Medicine, Seattle, Washington, United States of America
- * E-mail:
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387
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Mika A, Van Treuren W, González A, Herrera JJ, Knight R, Fleshner M. Exercise is More Effective at Altering Gut Microbial Composition and Producing Stable Changes in Lean Mass in Juvenile versus Adult Male F344 Rats. PLoS One 2015; 10:e0125889. [PMID: 26016739 PMCID: PMC4446322 DOI: 10.1371/journal.pone.0125889] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 03/23/2015] [Indexed: 02/07/2023] Open
Abstract
The mammalian intestine harbors a complex microbial ecosystem that influences many aspects of host physiology. Exposure to specific microbes early in development affects host metabolism, immune function, and behavior across the lifespan. Just as the physiology of the developing organism undergoes a period of plasticity, the developing microbial ecosystem is characterized by instability and may also be more sensitive to change. Early life thus presents a window of opportunity for manipulations that produce adaptive changes in microbial composition. Recent insights have revealed that increasing physical activity can increase the abundance of beneficial microbial species. We therefore investigated whether six weeks of wheel running initiated in the juvenile period (postnatal day 24) would produce more robust and stable changes in microbial communities versus exercise initiated in adulthood (postnatal day 70) in male F344 rats. 16S rRNA gene sequencing was used to characterize the microbial composition of juvenile versus adult runners and their sedentary counterparts across multiple time points during exercise and following exercise cessation. Alpha diversity measures revealed that the microbial communities of young runners were less even and diverse, a community structure that reflects volatility and malleability. Juvenile onset exercise altered several phyla and, notably, increased Bacteroidetes and decreased Firmicutes, a configuration associated with leanness. At the genus level of taxonomy, exercise altered more genera in juveniles than in the adults and produced patterns associated with adaptive metabolic consequences. Given the potential of these changes to contribute to a lean phenotype, we examined body composition in juvenile versus adult runners. Interestingly, exercise produced persistent increases in lean body mass in juvenile but not adult runners. Taken together, these results indicate that the impact of exercise on gut microbiota composition as well as body composition may depend on the developmental stage during which exercise is initiated.
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Affiliation(s)
- Agnieszka Mika
- Department of Integrative Physiology and the Center for Neuroscience, University of Colorado, Boulder, Colorado, 80301, United States of America
| | - Will Van Treuren
- Department of Microbiology and Immunology, Stanford University, Stanford, California, 94305, United States of America
| | - Antonio González
- Departments of Pediatrics, University of California San Diego, La Jolla, California, 29093, United States of America
| | - Jonathan J. Herrera
- Department of Integrative Physiology and the Center for Neuroscience, University of Colorado, Boulder, Colorado, 80301, United States of America
| | - Rob Knight
- Departments of Pediatrics, University of California San Diego, La Jolla, California, 29093, United States of America
- Computer Science & Engineering, University of California San Diego, La Jolla, California, 29093, United States of America
| | - Monika Fleshner
- Department of Integrative Physiology and the Center for Neuroscience, University of Colorado, Boulder, Colorado, 80301, United States of America
- * E-mail:
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388
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Janket SJ, Javaheri H, Ackerson LK, Ayilavarapu S, Meurman JH. Oral Infections, Metabolic Inflammation, Genetics, and Cardiometabolic Diseases. J Dent Res 2015; 94:119S-27S. [PMID: 25840582 DOI: 10.1177/0022034515580795] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Although several epidemiologic studies reported plausible and potentially causal associations between oral infections and cardiometabolic diseases (CMDs), controversy still lingers. This might be due to unrecognized confounding from metabolic inflammation and genetics, both of which alter the immune responses of the host. Low-grade inflammation termed metainflammation is the hallmark of obesity, insulin resistance, type 2 diabetes, and CMDs. According to the common soil theory, the continuum of obesity to CMDs is the same pathology at different time points, and early metainflammations, such as hyperglycemia and obesity, display many adverse cardiometabolic characteristics. Consequently, adipose tissue is now considered a dynamic endocrine organ that expresses many proinflammatory cytokines such as TNF-α, IL-6, plasminogen activator inhibitor 1, and IL-1β. In metainflammation, IL-1β and reactive oxygen species are generated, and IL-1β is a pivotal molecule in the pathogenesis of CMDs. Note that the same cytokines expressed in metainflammation are also reported in oral infections. In metabolic inflammation and oral infections, the innate immune system is activated through pattern recognition receptors-which include transmembrane receptors such as toll-like receptors (TLRs), cytosolic receptors such as nucleotide-binding oligomerization domain-like receptors, and multiprotein complexes called inflammasome. In general, TLR-2s are presumed to recognize lipoteichoic acid of Gram-positive microbes-and TLR-4s, lipopolysaccharide of Gram-negative microbes-while nucleotide-binding oligomerization domain-like receptors detect both Gram-positive and Gram-negative peptidoglycans on the bacterial cell walls. However, a high-fat diet activates TLR-2s, and obesity activates TLR-4s and induces spontaneous increases in serum lipopolysaccharide levels (metabolic endotoxemia). Moreover, genetics controls lipid-related transcriptome and the differentiation of monocyte and macrophages. Additionally, genetics influences CMDs, and this creates a confounding relationship among oral infections, metainflammation, and genetics. Therefore, future studies must elucidate whether oral infections can increase the risk of CMDs independent of the aforementioned confounding factors.
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Affiliation(s)
- S-J Janket
- General Dentistry, Boston University H. M. Goldman School of Dental Medicine, Boston, MA, USA Periodontology, Boston University H. M. Goldman School of Dental Medicine, Boston, MA, USA
| | - H Javaheri
- General Dentistry, Boston University H. M. Goldman School of Dental Medicine, Boston, MA, USA
| | - L K Ackerson
- Community Health and Sustainability, University of Massachusetts, Lowell, MA, USA
| | - S Ayilavarapu
- General Dentistry, Boston University H. M. Goldman School of Dental Medicine, Boston, MA, USA
| | - J H Meurman
- Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
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389
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Abstract
With the prevalence of cardio-metabolic disorders reaching pandemic proportions, the search for modifiable causative factors has intensified. One such potential factor is the vast microbial community inhabiting the human gastrointestinal tract, the gut microbiota. For the past decade evidence has accumulated showing the association of distinct changes in gut microbiota composition and function with obesity, type 2 diabetes and cardiovascular disease. Although causality in humans and the pathophysiological mechanisms involved have yet to be decisively established, several studies have demonstrated that the gut microbiota, as an environmental factor influencing the metabolic state of the host, is readily modifiable through a variety of interventions. In this review we provide an overview of the development of the gut microbiome and its compositional and functional changes in relation to cardio-metabolic disorders, and give an update on recent progress in how this could be exploited in microbiota-based therapeutics.
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Affiliation(s)
- Tue H Hansen
- />The Novo Nordisk Foundation Center for Basic Metabolic Research, Section of Metabolic Genetics, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 1, København Ø, 2100 Denmark
| | - Rikke J Gøbel
- />The Novo Nordisk Foundation Center for Basic Metabolic Research, Section of Metabolic Genetics, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 1, København Ø, 2100 Denmark
| | - Torben Hansen
- />The Novo Nordisk Foundation Center for Basic Metabolic Research, Section of Metabolic Genetics, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 1, København Ø, 2100 Denmark
- />Faculty of Health Sciences, University of Southern Denmark, J.B. Winsløws Vej 19-3, Odense C, 5000 Denmark
| | - Oluf Pedersen
- />The Novo Nordisk Foundation Center for Basic Metabolic Research, Section of Metabolic Genetics, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 1, København Ø, 2100 Denmark
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390
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Abstract
Sedentary lifestyle is linked with poor health, most commonly obesity and associated disorders, the corollary being that exercise offers a preventive strategy. However, the scope of exercise biology extends well beyond energy expenditure and has emerged as a great 'polypill', which is safe, reliable and cost-effective not only in disease prevention but also treatment. Biological mechanisms by which exercise influences homeostasis are becoming clearer and involve multi-organ systemic adaptations. Most of the elements of a modern lifestyle influence the indigenous microbiota but few studies have explored the effect of increased physical activity. While dietary responses to exercise obscure the influence of exercise alone on gut microbiota, professional athletes operating at the extremes of performance provide informative data. We assessed the relationship between extreme levels of exercise, associated dietary habits and gut microbiota composition, and discuss potential mechanisms by which exercise may exert a direct or indirect influence on gut microbiota.
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Affiliation(s)
- Orla O’Sullivan
- Teagasc Food Research Center; Moorepark; Fermoy; Cork, Ireland
| | - Owen Cronin
- Department of Medicine; University College Cork; National University of Ireland; Cork, Ireland
| | - Siobhan F Clarke
- Teagasc Food Research Center; Moorepark; Fermoy; Cork, Ireland,Alimentary Pharmabiotic Center; University College Cork; Cork, Ireland
| | | | - Micheal G Molloy
- Department of Medicine; University College Cork; National University of Ireland; Cork, Ireland
| | - Fergus Shanahan
- Department of Medicine; University College Cork; National University of Ireland; Cork, Ireland,Alimentary Pharmabiotic Center; University College Cork; Cork, Ireland,Correspondence to: Fergus Shanahan;
| | - Paul D Cotter
- Teagasc Food Research Center; Moorepark; Fermoy; Cork, Ireland,Alimentary Pharmabiotic Center; University College Cork; Cork, Ireland
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391
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Natural environments, ancestral diets, and microbial ecology: is there a modern "paleo-deficit disorder"? Part II. J Physiol Anthropol 2015; 34:9. [PMID: 25889196 PMCID: PMC4353476 DOI: 10.1186/s40101-014-0040-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 12/29/2014] [Indexed: 12/19/2022] Open
Abstract
Famed microbiologist René J. Dubos (1901–1982) was an early pioneer in the developmental origins of health and disease (DOHaD) construct. In the 1960s, he conducted groundbreaking research concerning the ways in which early-life experience with nutrition, microbiota, stress, and other environmental variables could influence later-life health outcomes. He recognized the co-evolutionary relationship between microbiota and the human host. Almost 2 decades before the hygiene hypothesis, he suggested that children in developed nations were becoming too sanitized (vs. our ancestral past) and that scientists should determine whether the childhood environment should be “dirtied up in a controlled manner.” He also argued that oft-celebrated growth chart increases via changes in the global food supply and dietary patterns should not be equated to quality of life and mental health. Here in the second part of our review, we reflect the words of Dubos off contemporary research findings in the areas of diet, the gut-brain-axis (microbiota and anxiety and depression) and microbial ecology. Finally, we argue, as Dubos did 40 years ago, that researchers should more closely examine the relevancy of silo-sequestered, reductionist findings in the larger picture of human quality of life. In the context of global climate change and the epidemiological transition, an allergy epidemic and psychosocial stress, our review suggests that discussions of natural environments, urbanization, biodiversity, microbiota, nutrition, and mental health, are often one in the same.
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392
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Villanueva-Millán MJ, Pérez-Matute P, Oteo JA. Gut microbiota: a key player in health and disease. A review focused on obesity. J Physiol Biochem 2015; 71:509-25. [PMID: 25749935 DOI: 10.1007/s13105-015-0390-3] [Citation(s) in RCA: 123] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 02/03/2015] [Indexed: 12/14/2022]
Abstract
Gut microbiota, its evolutive dynamics and influence on host through its protective, trophic and metabolic actions, has a key role in health and opens unique opportunities for the identification of new markers of the physiopathological state of each individual. Alterations in gut microbiota composition have been associated with plenty disorders. Of interest, the vast number of studies demonstrates the role of microbiota in obesity, a serious public health problem that has reached epidemic proportions in many developed and middle-income countries. The economic and health costs of this condition and its comorbidities such as fatty liver, insulin resistance/diabetes, or cardiovascular events are considerable. Therefore, every strategy designed to reduce obesity would imply important savings. Targeting microbiota, in order to restore/modulate the microbiota composition with antibiotics, probiotics, prebiotics, or even fecal transplants, is considered as a promising strategy for the development of new solutions for the treatment of obesity. However, there is still lot to do in this field in order to identify the exact composition of microbiota in "health" and the specific mechanisms that regulate the host-microbiotal crosstalk. In addition, it is important to note that changes not only in the gut microbiota profile (abundance) but also in its metabolism and functions need to be taken into account in the context of contribution in the physiopathology of obesity and related disorders.
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Affiliation(s)
- M J Villanueva-Millán
- HIV and Associated Metabolic Alterations Unit, Infectious Diseases Department, Center for Biomedical Research of La Rioja (CIBIR), Piqueras 98, 26006, Logroño, La Rioja, Spain
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393
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Lambert JE, Myslicki JP, Bomhof MR, Belke DD, Shearer J, Reimer RA. Exercise training modifies gut microbiota in normal and diabetic mice. Appl Physiol Nutr Metab 2015; 40:749-52. [PMID: 25962839 DOI: 10.1139/apnm-2014-0452] [Citation(s) in RCA: 145] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Cecal microbiota from type 2 diabetic (db/db) and control (db/(+)) mice was obtained following 6 weeks of sedentary or exercise activity. qPCR analysis revealed a main effect of exercise, with greater abundance of select Firmicutes species and lower Bacteroides/Prevotella spp. in both normal and diabetic exercised mice compared with sedentary counterparts. Conversely, Bifidobacterium spp. was greater in exercised normal but not diabetic mice (exercise × diabetes interaction). How exercise influences gut microbiota requires further investigation.
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Affiliation(s)
- Jennifer E Lambert
- a Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Jason P Myslicki
- a Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Marc R Bomhof
- a Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Darrell D Belke
- a Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Jane Shearer
- a Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada.,b Department of Biochemistry and Molecular Biology, Cumming School of Medicine; University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Raylene A Reimer
- a Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada.,b Department of Biochemistry and Molecular Biology, Cumming School of Medicine; University of Calgary, Calgary, AB T2N 4N1, Canada
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394
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Allen JM, Berg Miller ME, Pence BD, Whitlock K, Nehra V, Gaskins HR, White BA, Fryer JD, Woods JA. Voluntary and forced exercise differentially alters the gut microbiome in C57BL/6J mice. J Appl Physiol (1985) 2015; 118:1059-66. [PMID: 25678701 DOI: 10.1152/japplphysiol.01077.2014] [Citation(s) in RCA: 190] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Accepted: 02/08/2015] [Indexed: 12/18/2022] Open
Abstract
We have previously shown that voluntary wheel running (VWR) attenuates, whereas forced treadmill running (FTR) exacerbates, intestinal inflammation and clinical outcomes in a mouse model of colitis. As the gut microbiome is implicated in colitis, we hypothesized that VWR and FTR would differentially affect the gut microbiome. Mice (9-10/treatment) were randomly assigned to VWR, FTR, or sedentary home cage control (SED) for 6 wk. VWR were given running wheel access, whereas FTR ran on a treadmill for 40 min/day at 8-12 m/min, 5% grade. Forty-eight hours after the last exercise session, DNA was isolated from the fecal pellets and cecal contents, and the conserved bacterial 16S rRNA gene was amplified and sequenced using the Illumina Miseq platform. Permutational multivariate analysis of variance based on weighted UniFrac distance matrix revealed different bacterial clusters between feces and cecal contents in all groups (P < 0.01). Interestingly, the community structures of the three treatment groups clustered separately from each other in both gut regions (P < 0.05). Contrary to our hypothesis, the α-diversity metric, Chao1, indicated that VWR led to reduced bacterial richness compared with FTR or SED (P < 0.05). Taxonomic evaluation revealed that both VWR and FTR altered many individual bacterial taxa. Of particular interest, Turicibacter spp., which has been strongly associated with immune function and bowel disease, was significantly lower in VWR vs. SED/FTR. These data indicate that VWR and FTR differentially alter the intestinal microbiome of mice. These effects were observed in both the feces and cecum despite vastly different community structures between each intestinal region.
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Affiliation(s)
- Jacob M Allen
- Department of Kinesiology and Community Health, Mayo Clinic, Rochester, Minnesota; Integrative Immunology and Behavior Program, Mayo Clinic, Rochester, Minnesota
| | - Margret E Berg Miller
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois; Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Brandt D Pence
- Department of Kinesiology and Community Health, Mayo Clinic, Rochester, Minnesota; Integrative Immunology and Behavior Program, Mayo Clinic, Rochester, Minnesota
| | - Keith Whitlock
- Department of Kinesiology and Community Health, Mayo Clinic, Rochester, Minnesota
| | - Vandana Nehra
- Department of Gastroenterology, Mayo Clinic, Rochester, Minnesota
| | - H Rex Gaskins
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois; Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois; Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Bryan A White
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois; Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - John D Fryer
- Department of Neuroscience, Mayo Clinic, Jacksonville, Florida
| | - Jeffrey A Woods
- Department of Kinesiology and Community Health, Mayo Clinic, Rochester, Minnesota; Integrative Immunology and Behavior Program, Mayo Clinic, Rochester, Minnesota; Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois;
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395
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Hung YH, Linden MA, Gordon A, Rector RS, Buhman KK. Endurance exercise training programs intestinal lipid metabolism in a rat model of obesity and type 2 diabetes. Physiol Rep 2015; 3:3/1/e12232. [PMID: 25602012 PMCID: PMC4387752 DOI: 10.14814/phy2.12232] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Endurance exercise has been shown to improve metabolic outcomes in obesity and type 2 diabetes; however, the physiological and molecular mechanisms for these benefits are not completely understood. Although endurance exercise has been shown to decrease lipogenesis, promote fatty acid oxidation (FAO), and increase mitochondrial biosynthesis in adipose tissue, muscle, and liver, its effects on intestinal lipid metabolism remain unknown. The absorptive cells of the small intestine, enterocytes, mediate the highly efficient absorption and processing of nutrients, including dietary fat for delivery throughout the body. We investigated how endurance exercise altered intestinal lipid metabolism in obesity and type 2 diabetes using Otsuka Long‐Evans Tokushima Fatty (OLETF) rats. We assessed mRNA levels of genes associated with intestinal lipid metabolism in nonhyperphagic, sedentary Long‐Evans Tokushima Otsuka (LETO) rats (L‐Sed), hyperphagic, sedentary OLETF rats (O‐Sed), and endurance exercised OLETF rats (O‐EndEx). O‐Sed rats developed hyperphagia‐induced obesity (HIO) and type 2 diabetes compared with L‐Sed rats. O‐EndEx rats gained significantly less weight and fat pad mass, and had improved serum metabolic parameters without change in food consumption compared to O‐Sed rats. Endurance exercise resulted in dramatic up‐regulation of a number of genes in intestinal lipid metabolism and mitochondrial content compared with sedentary rats. Overall, this study provides evidence that endurance exercise programs intestinal lipid metabolism, likely contributing to its role in improving metabolic outcomes in obesity and type 2 diabetes. Endurance exercise has been shown to improve metabolic outcomes in obesity and type 2 diabetes; however, the physiological and molecular mechanisms for these benefits are not completely understood. Although endurance exercise has been shown to decrease lipogenesis, promote fatty acid oxidation (FAO), and increase mitochondrial biosynthesis in adipose tissue, muscle, and liver, its effects on intestinal lipid metabolism remain unknown. Endurance exercise resulted in dramatic up‐regulation of a number of genes in intestinal lipid metabolism and mitochondrial content compared with sedentary rats. Overall, this study provides evidence that endurance exercise programs intestinal lipid metabolism, likely contributing to its role in improving metabolic outcomes in obesity and type 2 diabetes.
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Affiliation(s)
- Yu-Han Hung
- Department of Nutrition Science, Purdue University, West Lafayette, Indiana
| | - Melissa A Linden
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri Research Service, Harry S Truman Memorial Veterans Hospital, Columbia, Missouri
| | - Alicia Gordon
- Department of Clinical Medicine, University of Dublin, Dublin, Ireland School of Biological Sciences, Dublin Institute of Technology, Dublin, Ireland
| | - R Scott Rector
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, Missouri Research Service, Harry S Truman Memorial Veterans Hospital, Columbia, Missouri Division of Gastroenterology and Hepatology, Department of Medicine, University of Missouri, Columbia, Missouri
| | - Kimberly K Buhman
- Department of Nutrition Science, Purdue University, West Lafayette, Indiana
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396
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Joyner MJ. Rethinking animal models and human obesity. Physiology (Bethesda) 2014; 29:384-5. [PMID: 25362631 DOI: 10.1152/physiol.00043.2014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Human obesity is a complex phenomenon where economic, cultural, behavioral, and biological factors intersect in the physiological space. Developing animal models that capture several elements of the many potential interactions between these factors will only increase their translational value.
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397
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Kang SS, Jeraldo PR, Kurti A, Miller MEB, Cook MD, Whitlock K, Goldenfeld N, Woods JA, White BA, Chia N, Fryer JD. Diet and exercise orthogonally alter the gut microbiome and reveal independent associations with anxiety and cognition. Mol Neurodegener 2014; 9:36. [PMID: 25217888 PMCID: PMC4168696 DOI: 10.1186/1750-1326-9-36] [Citation(s) in RCA: 223] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 09/09/2014] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND The ingestion of a high-fat diet (HFD) and the resulting obese state can exert a multitude of stressors on the individual including anxiety and cognitive dysfunction. Though many studies have shown that exercise can alleviate the negative consequences of a HFD using metabolic readouts such as insulin and glucose, a paucity of well-controlled rodent studies have been published on HFD and exercise interactions with regard to behavioral outcomes. This is a critical issue since some individuals assume that HFD-induced behavioral problems such as anxiety and cognitive dysfunction can simply be exercised away. To investigate this, we analyzed mice fed a normal diet (ND), ND with exercise, HFD diet, or HFD with exercise. RESULTS We found that mice on a HFD had robust anxiety phenotypes but this was not rescued by exercise. Conversely, exercise increased cognitive abilities but this was not impacted by the HFD. Given the importance of the gut microbiome in shaping the host state, we used 16S rRNA hypervariable tag sequencing to profile our cohorts and found that HFD massively reshaped the gut microbial community in agreement with numerous published studies. However, exercise alone also caused massive shifts in the gut microbiome at nearly the same magnitude as diet but these changes were surprisingly orthogonal. Additionally, specific bacterial abundances were directly proportional to measures of anxiety or cognition. CONCLUSIONS Thus, behavioral domains and the gut microbiome are both impacted by diet and exercise but in unrelated ways. These data have important implications for obesity research aimed at modifications of the gut microbiome and suggest that specific gut microbes could be used as a biomarker for anxiety or cognition or perhaps even targeted for therapy.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Nicholas Chia
- Department of Neuroscience, Mayo Clinic, 4500 San Pablo Rd, Jacksonville, FL 32224, USA.
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398
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Sands SA, Tsau S, Yankee TM, Parker BL, Ericsson AC, LeVine SM. The effect of omeprazole on the development of experimental autoimmune encephalomyelitis in C57BL/6J and SJL/J mice. BMC Res Notes 2014; 7:605. [PMID: 25190469 PMCID: PMC4167283 DOI: 10.1186/1756-0500-7-605] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 08/29/2014] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Gastric disturbances such as dyspepsia are routinely encountered by multiple sclerosis (MS) patients, and these conditions are often treated with gastric acid suppressors such as proton pump inhibitors, histamine H2 receptor antagonists, or antacids. The proton pump inhibitor omeprazole can alter the gut flora and immune responses, both of which can influence the course of experimental autoimmune encephalomyelitis (EAE), an animal model of MS. The objective of the current study was to examine the effect of omeprazole treatment on the development of EAE. Bacterial microbiome analysis of mouse fecal pellets was determined in C57BL/6J EAE mice chronically treated with omeprazole, and spleen immune cell content, clinical scores, weight, rotarod latency, and histopathology were used as outcome measures in C57BL/6J and SJL/J mice with EAE. RESULTS Omeprazole treatment resulted in decreases in Akkermansia muciniphila and Coprococcus sp. and an increase in unidentified bacteria in the family S24-7 (order Bacteroidales) in C57BL/6J mice with EAE. Omeprazole did not alter spleen immune cell content compared to vehicle in EAE mice, but differences independent of treatment were observed in subsets of T cells between early and advanced disease in C57BL/6J mice as well as between the two strains of mice at an advanced disease stage. Omeprazole caused no difference in clinical scores in either strain, but significantly lowered weight gain compared to vehicle in the C57BL/6J mice with EAE. Omeprazole also did not alter rotarod behavior or hindbrain inflammatory cell infiltration compared to vehicle in both strains of mice with EAE. Rotarod latency did reveal a negative correlation with clinical scores during active disease in both mouse strains, but not during clinical remission in SJL/J mice, suggesting that rotarod can detect disability not reflected in the clinical scores. CONCLUSIONS Despite alterations in the gut microbiota and weight gain in the C57BL/6J EAE model, omeprazole had no effect on multiple measures of disease activity in C57BL/6J and SJL/J mice with EAE, supporting the notion that omeprazole does not substantially influence disease activity in MS patients.
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Affiliation(s)
- Scott A Sands
- />Department of Molecular and Integrative Physiology, University of Kansas Medical Center, 3901 Rainbow Blvd, Kansas City, 66160 KS USA
| | - Sheila Tsau
- />Department of Molecular and Integrative Physiology, University of Kansas Medical Center, 3901 Rainbow Blvd, Kansas City, 66160 KS USA
| | - Thomas M Yankee
- />Department of Microbiology, Molecular Genetics and Immunology, University of Kansas Medical Center, 3901 Rainbow Blvd, 66160 Kansas City, KS USA
| | - Brooks L Parker
- />Department of Microbiology, Molecular Genetics and Immunology, University of Kansas Medical Center, 3901 Rainbow Blvd, 66160 Kansas City, KS USA
| | - Aaron C Ericsson
- />Department of Veterinary Pathobiology, Mutant Mouse Regional Resource Center, University of Missouri, 4011 Discovery Drive, 65201 Columbia, MO USA
| | - Steven M LeVine
- />Department of Molecular and Integrative Physiology, University of Kansas Medical Center, 3901 Rainbow Blvd, Kansas City, 66160 KS USA
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399
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Exercise induction of gut microbiota modifications in obese, non-obese and hypertensive rats. BMC Genomics 2014; 15:511. [PMID: 24952588 PMCID: PMC4082611 DOI: 10.1186/1471-2164-15-511] [Citation(s) in RCA: 204] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Accepted: 06/17/2014] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Obesity is a multifactor disease associated with cardiovascular disorders such as hypertension. Recently, gut microbiota was linked to obesity pathogenesisand shown to influence the host metabolism. Moreover, several factors such as host-genotype and life-style have been shown to modulate gut microbiota composition. Exercise is a well-known agent used for the treatment of numerous pathologies, such as obesity and hypertension; it has recently been demonstrated to shape gut microbiota consortia. Since exercise-altered microbiota could possibly improve the treatment of diseases related to dysfunctional microbiota, this study aimed to examine the effect of controlled exercise training on gut microbial composition in Obese rats (n = 3), non-obese Wistar rats (n = 3) and Spontaneously Hypertensive rats (n = 3). Pyrosequencing of 16S rRNA genes from fecal samples collected before and after exercise training was used for this purpose. RESULTS Exercise altered the composition and diversity of gut bacteria at genus level in all rat lineages. Allobaculum (Hypertensive rats), Pseudomonas and Lactobacillus (Obese rats) were shown to be enriched after exercise, while Streptococcus (Wistar rats), Aggregatibacter and Sutturella (Hypertensive rats) were more enhanced before exercise. A significant correlation was seen in the Clostridiaceae and Bacteroidaceae families and Oscillospira and Ruminococcus genera with blood lactate accumulation. Moreover, Wistar and Hypertensive rats were shown to share a similar microbiota composition, as opposed to Obese rats. Finally, Streptococcus alactolyticus, Bifidobacterium animalis, Ruminococcus gnavus, Aggregatibacter pneumotropica and Bifidobacterium pseudolongum were enriched in Obese rats. CONCLUSIONS These data indicate that non-obese and hypertensive rats harbor a different gut microbiota from obese rats and that exercise training alters gut microbiota from an obese and hypertensive genotype background.
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400
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White AK, Smith RJ, Bigler CR, Brooke WF, Schauer PR. Head and neck manifestations of neurofibromatosis. Laryngoscope 1986; 47:75-85. [PMID: 3088347 DOI: 10.1249/jes.0000000000000183] [Citation(s) in RCA: 248] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Neurofibromatosis is a neurocutaneous systemic disease that occurs in 1:2500 to 3300 live births. Prevalence figures have shown it to be as common as cystic fibrosis or Down's syndrome and more than twice as common as muscular dystrophy. In this study, our experience with 257 cases of neurofibromatosis seen since 1972 is reviewed. Intracranial, bony, and extracranial anomalies are described in the 223 patients (87%) who presented with, or ultimately developed, head and neck manifestations of the disease. The most common intracranial tumor was optic glioma, found in 35 patients (14%), 19 younger than 10 years of age. Acoustic neuromas were diagnosed in eight individuals (3%) and were bilateral in three. The most common skull anomaly was macrocephaly, noted 78 times (30%). Absence of the sphenoid wing occurred in 11 patients (4%) and 19 others (7%) had facial asymmetry due to other skull abnormalities. Extracranial manifestations included neurofibromas of the plexiform and nonplexiform type, Lisch nodules, and cafe-au-lait spots.
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