Effect of Dietary Supplementation of (^|^minus;)-Epigallocatechin Gallate on Gut Microbiota and Biomarkers of Colonic Fermentation in Rats

Unno, Toshihiro; Sakuma, Mina; Mitsuhashi, Shiho

doi:10.3177/jnsv.60.213

Cited by 67 publications

(51 citation statements)

References 31 publications

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“…transresveratrol [103]) have been used extensively. Often, such studies demonstrate that the test substance or (poly)phenol-rich commodity modulate the composition of the gut microbiota and / or ameliorate the harmful effects of the test animal's less than ideal diet [101][102][103][104][105][106][107][108].…”

Section: Prebiotic Effectsmentioning

confidence: 99%

Role of the small intestine, colon and microbiota in determining the metabolic fate of polyphenols

Williamson

Clifford

2017

Biochemical Pharmacology

268

172

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Please cite this article as: G. Williamson, M.N. Clifford, Role of the small intestine, colon and microbiota in determining the metabolic fate of polyphenols, Biochemical Pharmacology (2017), doi: http://dx.doi.org/10.1016/ j. bcp.2017.03.012 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. 1Role of the small intestine, colon and microbiota in determining the metabolic fate of in the small intestine, or reaches the colon and is subject to extensive catabolism by colonic microbiota. Untransformed substrates may be absorbed, appearing in plasma primarily as methylated, sulfated and glucuronidated derivatives, with in some cases the unchanged substrate. Many of the catabolites are well absorbed from the colon and appear in the plasma either similarly conjugated, or as glycine conjugates, or in some cases unchanged.Although many (poly)phenol catabolites have been identified in human plasma and / or urine, the pathways from substrate to final catabolite, and the species of bacteria and enzymes involved, are still scarcely reported. While it is clear that the composition of the human gut microbiota can be modulated in vivo by supplementation with some (poly)phenol-rich commodities, such modulation is definitely not an inevitable consequence of supplementation, it depends on the treatment, length of time and on the individual metabotype, and it is not clear whether the modulation is sustained when supplementation ceases. Some catabolites have been recorded in plasma of volunteers at concentrations similar to those shown to be effective in in vitro studies suggesting that some benefit may be achieved in vivo by diets yielding such catabolites. and are also present at high levels in supplements [4], and form essential components of many Chinese medicines [5]. A study within the European Prospective Investigation intoCancer and Nutrition (EPIC) using the Phenol Explorer database reported that the cohort studied consumed 427 different polyphenols including 94 that were consumed at a rate of >1 g/day. The estimated total polyphenol consumption ranged from 584 mg/day by Greek women to 1786 mg/day for men in Aarhus-Denmark. The corresponding data for Greek men and for Aarhus women were 744 mg/day and 1626 mg/ day, respectively, with all data adjusted for age and weighted by season and weekday of dietary recall [6]. This study defined the major contributors to be the phenolic acids (predominantly the caffeoylquinic acids (27-53%), also called chlorogenic acids) and flavonoids (predominantly flavanols (16-29%), proanthocyanidins (5-9%) and theaflavins (14-25%)) [6]. Hydroxybenzoic acids (3.3-7.4%), alkyl-phenols (1.6...

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Section: Prebiotic Effectsmentioning

confidence: 99%

Role of the small intestine, colon and microbiota in determining the metabolic fate of polyphenols

Williamson

Clifford

2017

Biochemical Pharmacology

268

172

View full text Add to dashboard Cite

show abstract

“…However, above small-intestinal absorption, tea catechins could reach the large intestine and be processed by gut microbiota into gallic acid and epigallocatechin (EGC) [26, 27]. Alterations in gut microbiota composition and differences in gut microbial metabolite profile due to different dietary feeding offer insights that may be relevant for several chronic conditions, including obesity.…”

Section: Introductionmentioning

confidence: 99%

“…abundance, increased Bacteroides , but also influenced Bifidobacterium and Prevotella, to a lesser extent resulting in lower levels of acetic and butyric acids and little influence on propionic acid levels in caecum. Thus, effects on weight reduction and weight maintenance due to dietary intervention with EGCG could be responsible for the regulation of energy metabolism in the body [26]. …”

Section: Introductionmentioning

confidence: 99%

EGCG Prevents High Fat Diet‐Induced Changes in Gut Microbiota, Decreases of DNA Strand Breaks, and Changes in Expression and DNA Methylation of Dnmt1 and MLH1 in C57BL/6J Male Mice

Remely

Ferk

Sterneder

et al. 2017

Oxidative Medicine and Cellular Longevity

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Obesity as a multifactorial disorder involves low-grade inflammation, increased reactive oxygen species incidence, gut microbiota aberrations, and epigenetic consequences. Thus, prevention and therapies with epigenetic active antioxidants, (−)-Epigallocatechin-3-gallate (EGCG), are of increasing interest. DNA damage, DNA methylation and gene expression of DNA methyltransferase 1, interleukin 6, and MutL homologue 1 were analyzed in C57BL/6J male mice fed a high-fat diet (HFD) or a control diet (CD) with and without EGCG supplementation. Gut microbiota was analyzed with quantitative real-time polymerase chain reaction. An induction of DNA damage was observed, as a consequence of HFD-feeding, whereas EGCG supplementation decreased DNA damage. HFD-feeding induced a higher inflammatory status. Supplementation reversed these effects, resulting in tissue specific gene expression and methylation patterns of DNA methyltransferase 1 and MutL homologue 1. HFD feeding caused a significant lower bacterial abundance. The Firmicutes/Bacteroidetes ratio is significantly lower in HFD + EGCG but higher in CD + EGCG compared to control groups. The results demonstrate the impact of EGCG on the one hand on gut microbiota which together with dietary components affects host health. On the other hand effects may derive from antioxidative activities as well as epigenetic modifications observed on CpG methylation but also likely to include other epigenetic elements.

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“…A recent report has described AGOs as preventing gut dysbiosis in mice without influence in the obese phenotype and serum metabolic parameters in abnormal high-fat dietfed conditions (15). However, several dietary components such as oligofructose and epigallocatechin gallate decrease adipose deposition in a normal diet-fed conditions; these functions are mediated respectively by the acceleration of L-cell differentiation or alteration of microbial composition (9,16). For this study, we evaluated the effects of AGOs on an obese phenotype in normal diet-fed mice.…”

mentioning

confidence: 99%

Agaro-Oligosaccharides Regulate Gut Microbiota and Adipose Tissue Accumulation in Mice

Higashimura

Baba

Inoüe

et al. 2017

Journal of Nutritional Science and Vitaminology, J Nutr Sci Vit

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Summary Gut microbiota are deeply associated with the prevalence of obesity. Agarose is hydrolyzed easily to yield oligosaccharides, designated as agaro-oligosaccharides (AGO). This study evaluated the effects of AGO on obese phenotype and gut microbial composition in mice. Mice were administered AGO in drinking water (AGO-receiving mice). 16S rRNA gene sequencing analyses revealed their fecal microbiota profiles. Serum bile acids were ascertained using a LC-MS/MS system. Compared to the control group, AGO administration significantly reduced epididymal adipose tissue weights and serum non-esterified fatty acid concentrations, but the cecal content weights were increased. Data from the serum bile acid profile show that concentrations of primary bile acids (cholic acid and chenodeoxycholic acid), but not those of secondary bile acids (deoxycholic acid, lithocholic acid, and ursodeoxycholic acid), tended to increase in AGO-receiving mice. 16S rRNA gene sequencing analyses showed that the relative abundances of 15 taxa differed significantly in AGO-receiving mice. Of these, the relative abundances of Rikenellaceae and Lachnospiraceae were found to be positively correlated with epididymal adipose tissue weight. The relative abundances of Bacteroides and Ruminococcus were correlated negatively with epididymal adipose tissue weight. Although the definitive role of gut microbes of AGO-received mice is still unknown, our data demonstrate the possibility that AGO administration affects the gut microbial composition and inhibits obesity in mice.

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Effect of Dietary Supplementation of (^|^minus;)-Epigallocatechin Gallate on Gut Microbiota and Biomarkers of Colonic Fermentation in Rats

Cited by 67 publications

References 31 publications

Role of the small intestine, colon and microbiota in determining the metabolic fate of polyphenols

Role of the small intestine, colon and microbiota in determining the metabolic fate of polyphenols

EGCG Prevents High Fat Diet‐Induced Changes in Gut Microbiota, Decreases of DNA Strand Breaks, and Changes in Expression and DNA Methylation of Dnmt1 and MLH1 in C57BL/6J Male Mice

Agaro-Oligosaccharides Regulate Gut Microbiota and Adipose Tissue Accumulation in Mice

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