Gut Microbiota Metabolites of Dietary Lignans and Risk of Type 2 Diabetes: A Prospective Investigation in Two Cohorts of U.S. Women

Previous studies have reported the therapeutic effects of oleuropein (OP) consumption on the early stage of type 2 diabetes. However, the efficacy of OP on the advanced stage of type 2 diabetes has not been investigated, and the relationship between OP and intestinal flora has not been studied. Therefore, in this study, to explore the relieving effects of OP intake on the advanced stage of type 2 diabetes and the regulatory effects of OP on intestinal microbes, diabetic db/db mice (17-week-old) were treated with OP at the dose of 200 mg/kg for 15 weeks. We found that OP has a significant effect in decreasing fasting blood glucose levels, improving glucose tolerance, lowering the homeostasis model assessment–insulin resistance index, restoring histopathological features of tissues, and promoting hepatic protein kinase B activation in db/db mice. Notably, OP modulates gut microbiota at phylum level, increases the relative abundance of Verrucomicrobia and Deferribacteres, and decreases the relative abundance of Bacteroidetes. OP treatment increases the relative abundance of Akkermansia, as well as decreases the relative abundance of Prevotella, Odoribacter, Ruminococcus, and Parabacteroides at genus level. In conclusion, OP may ameliorate the advanced stage of type 2 diabetes through modulating the composition and function of gut microbiota. Our findings provide a promising therapeutic approach for the treatment of advanced stage type 2 diabetes.

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The relationship between gut microbiota, short-chain fatty acids and type 2 diabetes mellitus: the possible role of dietary fibre

Acta Diabetologica ◽

10.1007/s00592-021-01727-5 ◽

2021 ◽

Author(s):

Dominic Salamone ◽

Angela Albarosa Rivellese ◽

Claudia Vetrani

Keyword(s):

Type 2 Diabetes ◽

Fatty Acids ◽

Gut Microbiota ◽

Dietary Fibre ◽

Short Chain Fatty Acids ◽

Short Chain ◽

Microbiota Composition ◽

The Relationship ◽

Chain Fatty Acids

AbstractGut microbiota and its metabolites have been shown to influence multiple physiological mechanisms related to human health. Among microbial metabolites, short-chain fatty acids (SCFA) are modulators of different metabolic pathways. On the other hand, several studies suggested that diet might influence gut microbiota composition and activity thus modulating the risk of metabolic disease, i.e. obesity, insulin resistance and type 2 diabetes. Among dietary component, dietary fibre may play a pivotal role by virtue of its prebiotic effect on fibre-fermenting bacteria, that may increase SCFA production. The aim of this review was to summarize and discuss current knowledge on the impact of dietary fibre as modulator of the relationship between glucose metabolism and microbiota composition in humans. More specifically, we analysed evidence from observational studies and randomized nutritional intervention investigating the relationship between gut microbiota, short-chain fatty acids and glucose metabolism. The possible mechanisms behind this association were also discussed.

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Gut microbiota influence in type 2 diabetes mellitus (T2DM)

Gut Pathogens ◽

10.1186/s13099-021-00446-0 ◽

2021 ◽

Vol 13 (1) ◽

Author(s):

A. L. Cunningham ◽

J. W. Stephens ◽

D. A. Harris

Keyword(s):

Diabetes Mellitus ◽

Type 2 Diabetes ◽

Type 2 Diabetes Mellitus ◽

Gut Microbiota ◽

Potential Role ◽

Evidence Base ◽

Human Metabolism ◽

Altered Glucose

AbstractA strong and expanding evidence base supports the influence of gut microbiota in human metabolism. Altered glucose homeostasis is associated with altered gut microbiota, and is clearly associated with the development of type 2 diabetes mellitus (T2DM) and associated complications. Understanding the causal association between gut microbiota and metabolic risk has the potential role of identifying susceptible individuals to allow early targeted intervention.

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An alcohol-free beer enriched with isomaltulose and a resistant dextrin modulates gut microbiome in subjects with type 2 diabetes mellitus and overweight or obesity: a pilot study

Food & Function ◽

10.1039/d0fo03160g ◽

2021 ◽

Author(s):

Rocío Mateo-Gallego ◽

Isabel Moreno-Indias ◽

Ana M. Bea ◽

Lidia Sánchez-Alcoholado ◽

Antonio J. Fumanal ◽

...

Keyword(s):

Diabetes Mellitus ◽

Type 2 Diabetes ◽

Type 2 Diabetes Mellitus ◽

Pilot Study ◽

Gut Microbiota ◽

Gut Microbiome ◽

Low Doses ◽

Resistant Dextrin ◽

Overweight Or Obesity

An alcohol-free beer including the substitution of regular carbohydrates for low doses of isomaltulose and maltodextrin within meals significantly impacts gut microbiota in diabetic subjects with overweight or obesity.

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Fermented carrot juice attenuates type 2 diabetes by mediating gut microbiota in rats

Food & Function ◽

10.1039/c9fo00475k ◽

2019 ◽

Vol 10 (5) ◽

pp. 2935-2946 ◽

Cited By ~ 10

Author(s):

Rongkang Hu ◽

Feng Zeng ◽

Linxiu Wu ◽

Xuzhi Wan ◽

Yongfang Chen ◽

...

Keyword(s):

Type 2 Diabetes ◽

Fatty Acid ◽

Gut Microbiota ◽

Short Chain Fatty Acid ◽

Lactobacillus Rhamnosus ◽

Chain Fatty Acid ◽

Carrot Juice ◽

Protein Expressions ◽

Free Phenolics

Carrot juice fermented with Lactobacillus rhamnosus GG, enriched with free phenolics, organic acids and short-chain fatty acid, has the potential to ameliorate type 2 diabetes, in part through modulating specific gut microbiota and regulating the mRNA and protein expressions levels involved in glucose metabolism.

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Intestinal microbiota and their metabolic contribution to type 2 diabetes and obesity

Journal of Diabetes & Metabolic Disorders ◽

10.1007/s40200-021-00858-4 ◽

2021 ◽

Author(s):

A. L. Cunningham ◽

J. W. Stephens ◽

D. A. Harris

Keyword(s):

Type 2 Diabetes ◽

Gut Microbiota ◽

Current Knowledge ◽

Intestinal Barrier ◽

Short Chain Fatty Acids ◽

Global Epidemic ◽

Technological Advances ◽

Diabetes And Obesity

AbstractObesity and type 2 diabetes mellitus (T2DM) are common, chronic metabolic disorders with associated significant long-term health problems at global epidemic levels. It is recognised that gut microbiota play a central role in maintaining host homeostasis and through technological advances in both animal and human models it is becoming clear that gut microbiota are heavily involved in key pathophysiological roles in the aetiology and progression of both conditions. This review will focus on current knowledge regarding microbiota interactions with short chain fatty acids, the host inflammatory response, signaling pathways, integrity of the intestinal barrier, the interaction of the gut-brain axis and the subsequent impact on the metabolic health of the host.

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