Gut microbiota composition correlates with changes in body fat content due to weight loss

Remely, Marlene; Tesar, I; Hippe, Berit; Gnauer, S; Rust, Petra; Haslberger, Alexander G.

doi:10.3920/bm2014.0104

Cited by 136 publications

(102 citation statements)

References 53 publications

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“…NAFLD incidence and disease severity have been linked to gut dysbiosis in a wellcharacterized population of adults with NAFLD, with Bacteriodetes abundance independently associated with progression to NASH and Ruminococcus linked to fibrotic lesions 98 . Comparison between humans who are lean or obese shows that bacterial species diversity is reduced in obesity 221,222 ; mucindegrading bacteria Akkermansia muciniphila and antiinflammatory Faecalibacterium prausnitzii are emerging as potential key therapeutic targets 223 , although the mechanisms governing their role in inflammationdriven metabolic disease are yet to be determined. Probiotics and prebiotics have been investigated in both clinical (TABLE 1) and preclinical models; however, as we have reviewed elsewhere 118 , most probiotic trials administered during pregnancy have had limited success in improving maternal and neonatal outcomes.…”

Section: Targeting the Gut–liver Axismentioning

confidence: 99%

Developmental origins of NAFLD: a womb with a clue

Wesolowski

Kasmi

Jonscher

et al. 2016

Nat Rev Gastroenterol Hepatol

176

167

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Changes in the maternal environment leading to an altered intrauterine milieu can result in subtle insults to the fetus, promoting increased lifetime disease risk and/or disease acceleration in childhood and later in life. Particularly worrisome is that the prevalence of NAFLD is rapidly increasing among children and adults, and is being diagnosed at increasingly younger ages, pointing towards an early-life origin. A wealth of evidence, in humans and non-human primates, suggests that maternal nutrition affects the placenta and fetal tissues, leading to persistent changes in hepatic metabolism, mitochondrial function, the intestinal microbiota, liver macrophage activation and susceptibility to NASH postnatally. Deleterious exposures in utero include fetal hypoxia, increased nutrient supply, inflammation and altered gut microbiota that might produce metabolic clues, including fatty acids, metabolites, endotoxins, bile acids and cytokines, which prime the infant liver for NAFLD in a persistent manner and increase susceptibility to NASH. Mechanistic links to early disease pathways might involve shifts in lipid metabolism, mitochondrial dysfunction, pioneering gut microorganisms, macrophage programming and epigenetic changes that alter the liver microenvironment, favouring liver injury. In this Review, we discuss how maternal, fetal, neonatal and infant exposures provide developmental clues and mechanisms to help explain NAFLD acceleration and increased disease prevalence. Mechanisms identified in clinical and preclinical models suggest important opportunities for prevention and intervention that could slow down the growing epidemic of NAFLD in the next generation.NAFLD is a general term used to describe a broad spectrum of liver abnormalities, ranging from simple, uncomplicated hepatic steatosis to NASH, accompanied by different degrees of Correspondence to J.E.F. jed.friedman@ucdenver.edu. Author contributionsAll authors researched data for the article, provided a substantial contribution to discussion of content, wrote the article, and reviewed and edited the manuscript before submission. Competing interests statementThe authors declare no competing interests. HHS Public AccessAuthor manuscript Nat Rev Gastroenterol Hepatol. Author manuscript; available in PMC 2017 December 12. Author Manuscript Author ManuscriptAuthor ManuscriptAuthor Manuscript inflammation and fibrosis. NAFLD is increasing in prevalence, especially in adolescents 1 , despite the levellingoff of the obesity epidemic from 2003-2004 to 2013-2014 in children and adolescents aged 2-19 years (REF.2). The most common chronic liver disease worldwide, NAFLD increases the risk of cardiovascular events eightfold and type 2 diabetes mellitus (T2DM) threefold 3 , and is a strong risk factor for hepatocellular carcinoma (HCC) 4 . At the time of paediatric NAFLD diagnosis, 25-50% of children have NASH and 10-25% have advanced fibrosis 5 . For many decades, it was thought that NAFLD was predominantly driven by obesity in the setting of genetic suscep...

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Section: Targeting the Gut–liver Axismentioning

confidence: 99%

Developmental origins of NAFLD: a womb with a clue

Wesolowski

Kasmi

Jonscher

et al. 2016

Nat Rev Gastroenterol Hepatol

176

167

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“…As said, composition and diversity are divergent in obese and non-obese individuals [109]. It is yet unsolved whether weight loss causes gut microbiota modifications or vice versa.…”

Section: After Normalizing Bmi Diet Age Estaki Et Al Analyzed Fecmentioning

confidence: 99%

Exercise has the guts: How physical activity may positively modulate gut microbiota in chronic and immune-based diseases

Codella

Luzi

Terruzzi³

2018

Digestive and Liver Disease

128

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Please cite this article as: Codella Roberto, Luzi Livio, Terruzzi Ileana.Exercise has the guts: how physical activity may positively modulate gut microbiota in chronic and immune-based diseases.Digestive and Liver Disease https://doi.org/10.1016/j.dld. 2017.11.016 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractLimited animal and human research findings implied that exercise might have a

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“…Its presence might be essential for a mucosal adherent network of beneficial microorganisms that together prompt these effects of the host. As a matter of fact, weight loss studies usually report increased abundance of Verrucomicrobia (mainly Akkermansia muciniphila) as well as several other microbial species (Liou et al 2013, Remely et al 2015, Ward et al 2014. Taken together, these results further indicate the possible importance of mucosa-associated microbial networks and their metabolic cross-feeding for regulation of host health-related parameters and prevention of disease.…”

Section: Chaptermentioning

confidence: 73%

Cross-feeding interactions of gut symbionts driven by human milk oligosaccharidesand mucins

Chia¹

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Chapter 4Microbial metabolic networks at the mucus layer lead to dietindependent butyrate and vitamin B12 production by intestinal symbionts 71 Chapter 5Deciphering trophic interaction between Akkermansia muciniphila and the butyrogenic gut commensal Anaerostipes caccae using a metatranscriptomic approach 97 Chapter 6General discussion 123 Chapter 7 Thesis summary & Nederlandse samenvatting 143 Appendices References 153Co-author affiliations 179Acknowledgements 183About the author 184List of publications 185 VLAG training activities 186Chapter 1 General introduction and thesis outlineChapter 1 2 General introductionHumans can be considered holobionts, consisting of cells from the host and an even larger number of microorganisms (Postler and Ghosh 2017). The majority of microbes are residing in the gut (Sender et al 2016). The human gut microbiota is a complex ecosystem consisting of bacteria, archaea, microeukaryotes and viruses (Clemente et al 2012). Over 2000 species-level phylotypes (prokaryotes including bacteria and archaea) have been detected for the gut microbiota, with each individual estimated to host at least 160 species (Qin et al 2010, Zoetendal et al 2008. The gut microbiota may impact the well-being of human and susceptibility for diseases by interacting with our metabolic, immune and neurological system (Honda and Littman 2016, Koh et al 2016, Rogers et al 2016. Furthermore, the gut microbiota contributes to a variety of metabolic functions and can be seen as an essential part of our digestive system (El Kaoutari et al 2013). Bacterial symbionts allow the human hosts to utilise inaccessible nutrients by converting complex substrates to short chain fatty acid (SCFA) and vitamins (Fisher et al 2017). Bacterial-derived SCFAs are estimated to contribute about 10% of our daily caloric requirement (Bergman 1990). While all SCFAs are vital for maintaining gut homeostasis, butyrate is of particular interest because it has been attributed to a range of health-promoting functions. Butyrate is the primary energy source for colonic epithelial cells and is associated with the enhancement of colonic barrier function, increase of satiety, pain relief, anti-inflammatory responses, and protection against colorectal cancer (Banasiewicz et al 2013, Bolognini et al 2016, Donohoe et al 2011, Furusawa et al 2013, Goncalves and Martel 2013.Considering the physiological benefits of butyrate to human health, this thesis investigates the microbial interaction of gut symbionts that support butyrate production driven primarily by the host produced glycans in human milk and mucus. Glycans are compounds consisting of an array of glycosidically linked monosaccharides (monosaccharides and disaccharides are collectively termed sugars) such as human milk oligosaccharides (HMOS) and mucins (Varki and Kornfeld 2017). HMOS present in mother milk are the major compositional and functional driver of the infant gut microbiota (Backhed et al 2015). Mucin glycans covering the intestinal lining create a stable niche for bacterial coloni...

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Gut microbiota composition correlates with changes in body fat content due to weight loss

Cited by 136 publications

References 53 publications

Developmental origins of NAFLD: a womb with a clue

Developmental origins of NAFLD: a womb with a clue

Exercise has the guts: How physical activity may positively modulate gut microbiota in chronic and immune-based diseases

Cross-feeding interactions of gut symbionts driven by human milk oligosaccharidesand mucins

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