The anti-diabetic activities, gut microbiota composition, the anti-inflammatory effects of Scutellaria–coptis herb couple against insulin resistance-model of diabetes involving the toll-like receptor 4 signaling pathway

2019 ◽  
Vol 237 ◽  
pp. 202-214 ◽  
Author(s):  
Chang-hua Zhang ◽  
Jun-qing Sheng ◽  
Surendra Sarsaiya ◽  
Fu-xing Shu ◽  
Tong-tong Liu ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Gut Microbiota ◽  
Signaling Pathway ◽  
Microbiota Composition ◽  
Toll Like Receptor ◽  
Toll Like Receptor 4 ◽  
Resistance Model ◽  
Anti Inflammatory ◽  
Gut Microbiota Composition

Gut microbiota modulates COPD pathogenesis: role of anti-inflammatory Parabacteroides goldsteinii lipopolysaccharide

Gut ◽  
2021 ◽  
pp. gutjnl-2020-322599
Author(s):  
Hsin-Chih Lai ◽  
Tzu-Lung Lin ◽  
Ting-Wen Chen ◽  
Yu-Lun Kuo ◽  
Chih-Jung Chang ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Intestinal Inflammation ◽  
Chronic Obstructive ◽  
Microbiota Composition ◽  
Active Components ◽  
Toll Like Receptor 4 ◽  
Obstructive Pulmonary Disease ◽  
Anti Inflammatory ◽  
Gut Microbiota Composition

ObjectiveChronic obstructive pulmonary disease (COPD) is a global disease characterised by chronic obstruction of lung airflow interfering with normal breathing. Although the microbiota of respiratory tract is established to be associated with COPD, the causality of gut microbiota in COPD development is not yet established. We aimed to address the connection between gut microbiota composition and lung COPD development, and characterise bacteria and their derived active components for COPD amelioration.DesignA murine cigarette smoking (CS)-based model of COPD and strategies evaluating causal effects of microbiota were performed. Gut microbiota structure was analysed, followed by isolation of target bacterium. Single cell RNA sequencing, together with sera metabolomics analyses were performed to identify host responsive molecules. Bacteria derived active component was isolated, followed by functional assays.ResultsGut microbiota composition significantly affects CS-induced COPD development, and faecal microbiota transplantation restores COPD pathogenesis. A commensal bacterium Parabacteroides goldsteinii was isolated and shown to ameliorate COPD. Reduction of intestinal inflammation and enhancement of cellular mitochondrial and ribosomal activities in colon, systematic restoration of aberrant host amino acids metabolism in sera, and inhibition of lung inflammations act as the important COPD ameliorative mechanisms. Besides, the lipopolysaccharide derived from P. goldsteinii is anti-inflammatory, and significantly ameliorates COPD by acting as an antagonist of toll-like receptor 4 signalling pathway.ConclusionThe gut microbiota–lung COPD axis was connected. A potentially benefial bacterial strain and its functional component may be developed and used as alternative agents for COPD prevention or treatment.

scholarly journals Betaine Inhibits Toll-like Receptor 4 Responses and Restores Intestinal Microbiota in Acute Liver Failure Mice

2020 ◽  
Author(s):  
Qian Chen ◽  
Yao Wang ◽  
Fangzhou Jiao ◽  
Chunxia Shi ◽  
Maohua Pei ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Liver Failure ◽  
Acute Liver Failure ◽  
Intestinal Cell ◽  
Microbiota Composition ◽  
Toll Like Receptor ◽  
Model Group ◽  
Toll Like Receptor 4 ◽  
The Impact ◽  
Gut Microbiota Composition

Abstract Background Previous research has revealed that the gut microbiome has a marked impact on acute liver failure (ALF). Here, we evaluated the impact of betaine on the gut microbiota composition in an ALF animal model. The potential protective effect of betaine by regulating Toll-like receptor 4 (TLR4) responses was explored as well. Methods Both mouse and cell experiments included normal, model, and betaine groups. The rat small intestinal cell line IEC-18 was used for in vitro experiments. Results Betaine ameliorated the small intestine tissue and IEC-18 cell damage in the model group by reducing the high expression of TLR4, MyD88, TRAF6 and TNF-α. Furthermore, the intestinal permeability in the model group was improved by enhancing the expression of the (ZO)-1 and occludin tight junction proteins. There were 509 operational taxonomic units (OTUs) that were identified in mouse fecal samples, including 156 core microbiome taxa. Betaine significantly improved the microbial communities, depleted the gut microbiota constituents Coriobacteriaceae, Lachnospiraceae, Enterorhabdus and Coriobacteriales and markedly enriched the taxa Bacteroidaceae, Bacteroides, Parabacteroides and Prevotella in the model group. Conclusion Betaine effectively improved intestinal injury in ALF by inhibiting the TLR4/MyD88 signaling pathway, improving the intestinal mucosal barrier and maintaining the gut microbiota composition.

scholarly journals Betaine inhibits Toll-like receptor 4 responses and restores intestinal microbiota in acute liver failure mice

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Qian Chen ◽  
Yao Wang ◽  
Fangzhou Jiao ◽  
Chunxia Shi ◽  
Maohua Pei ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Liver Failure ◽  
Acute Liver Failure ◽  
Intestinal Cell ◽  
Microbiota Composition ◽  
Toll Like Receptor ◽  
Model Group ◽  
Toll Like Receptor 4 ◽  
The Impact ◽  
Gut Microbiota Composition

AbstractPrevious research has revealed that the gut microbiome has a marked impact on acute liver failure (ALF). Here, we evaluated the impact of betaine on the gut microbiota composition in an ALF animal model. The potential protective effect of betaine by regulating Toll-like receptor 4 (TLR4) responses was explored as well. Both mouse and cell experiments included normal, model, and betaine groups. The rat small intestinal cell line IEC-18 was used for in vitro experiments. Betaine ameliorated the small intestine tissue and IEC-18 cell damage in the model group by reducing the high expression of TLR4 and MyD88. Furthermore, the intestinal permeability in the model group was improved by enhancing the expression of the (ZO)-1 and occludin tight junction proteins. There were 509 operational taxonomic units (OTUs) that were identified in mouse fecal samples, including 156 core microbiome taxa. Betaine significantly improved the microbial communities, depleted the gut microbiota constituents Coriobacteriaceae, Lachnospiraceae, Enterorhabdus and Coriobacteriales and markedly enriched the taxa Bacteroidaceae, Bacteroides, Parabacteroides and Prevotella in the model group. Betaine effectively improved intestinal injury in ALF by inhibiting the TLR4/MyD88 signaling pathway, improving the intestinal mucosal barrier and maintaining the gut microbiota composition.

scholarly journals Publisher Correction: Neonatal selection by Toll-like receptor 5 influences long-term gut microbiota composition

Nature ◽  
2018 ◽  
Vol 563 (7731) ◽  
pp. E25-E25
Author(s):  
Marcus Fulde ◽  
Felix Sommer ◽  
Benoit Chassaing ◽  
Kira van Vorst ◽  
Aline Dupont ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Microbiota Composition ◽  
Toll Like Receptor ◽  
Toll Like Receptor 5 ◽  
Gut Microbiota Composition

scholarly journals Metformin Exerts Anti-inflammatory and Mucus Barrier Protective Effects by Enriching Akkermansia muciniphila in Mice With Ulcerative Colitis

2021 ◽  
Vol 12 ◽  
Author(s):  
Haoran Ke ◽  
Fang Li ◽  
Wenlin Deng ◽  
Zitong Li ◽  
Siqi Wang ◽  
...  
Keyword(s):  
Ulcerative Colitis ◽  
Gut Microbiota ◽  
Treated Group ◽  
Protective Effects ◽  
Microbiota Composition ◽  
16S Rrna Analysis ◽  
Akkermansia Muciniphila ◽  
Anti Inflammatory ◽  
Mucus Barrier ◽  
Gut Microbiota Composition

The present study aimed to determine if metformin exerts anti-inflammatory and mucus-protective effects via the gut microbiota. Metformin has extensive benefits including anti-inflammatory effects. Previous studies showed that metformin changed the gut microbiota composition and increases the number of goblet cells. Intestinal dysbiosis and goblet cell depletion are important features of ulcerative colitis (UC). The underlying mechanism and whether metformin can improve the mucus barrier in UC remain unclear. Metformin (400 mg/kg/day) was administered to mice with dextran sulfate sodium (DSS)-induced UC for 2 wk to investigate the effects of metformin on the intestinal mucus barrier. The gut microbiota was depleted, using antibiotics, to explore its role in the mucus-protecting effects of metformin. Akkermansia muciniphila (A. muciniphila), which was enriched in metformin-treated mice, was administered to mice to investigate the effects of the bacteria on UC and the mucus barrier. Metformin attenuated DSS-induced UC in mice, as evidenced by the alleviation of diarrhea, hematochezia, and the decrease in body weight. The expression of mucin2, a prominent mucus barrier protein, was increased in the metformin-treated group compared to the DSS-treated group. Furthermore, fecal 16S rRNA analysis showed that metformin treatment changed the gut microbiota composition by increasing the relative abundance of Lactobacillus and Akkermansia species while decreasing Erysipelatoclostridium at the genus level. Antibiotic treatment partly abolished the anti-inflammatory and mucus-protecting effects of metformin. Administration of A. muciniphila alleviated the colonic inflammation and mucus barrier disruption. Metformin alleviated DSS-induced UC in mice and protected against cell damage via affecting the gut microbiota, thereby providing a new mechanism for the therapeutic effect of metformin in patients with UC. This study also provides evidence that A. muciniphila as a probiotic has potential benefits for UC.

Phellinus linteus polysaccharide extract improves insulin resistance by regulating gut microbiota composition

2019 ◽  
Vol 34 (1) ◽  
pp. 1065-1078 ◽  
Author(s):  
Yangyang Liu ◽  
Chaorui Wang ◽  
Jinshan Li ◽  
Tiantian Li ◽  
Yong Zhang ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Gut Microbiota ◽  
Microbiota Composition ◽  
Phellinus Linteus ◽  
Gut Microbiota Composition
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