scholarly journals Intestinal Alkaline Phosphatase Combined with Voluntary Physical Activity Alleviates Experimental Colitis in Obese Mice. Involvement of Oxidative Stress, Myokines, Adipokines and Proinflammatory Biomarkers

Antioxidants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 240
Author(s):  
Aleksandra Danielak ◽  
Dagmara Wojcik ◽  
Agnieszka Mazur-Bialy ◽  
Marcin Surmiak ◽  
Jan Bilski ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Alkaline Phosphatase ◽  
Adipose Tissue ◽  
Experimental Colitis ◽  
Standard Diet ◽  
Concomitant Treatment ◽  
Obese Mice ◽  
Intestinal Alkaline Phosphatase ◽  
Trinitrobenzenesulfonic Acid ◽  
Colonic Blood Flow

Intestinal alkaline phosphatase (IAP) is an essential mucosal defense factor involved in the process of maintenance of gut homeostasis. We determined the effect of moderate exercise (voluntary wheel running) with or without treatment with IAP on the course of experimental murine 2,4,6-trinitrobenzenesulfonic acid (TNBS) colitis by assessing disease activity index (DAI), colonic blood flow (CBF), plasma myokine irisin levels and the colonic and adipose tissue expression of proinflammatory cytokines, markers of oxidative stress (SOD2, GPx) and adipokines in mice fed a standard diet (SD) or high-fat diet (HFD). Macroscopic and microscopic colitis in sedentary SD mice was accompanied by a significant decrease in CBF, and a significant increase in the colonic expression of tumor necrosis factor-alpha (TNF-α), IL-6, IL-1β and leptin mRNAs and decrease in the mRNA expression of adiponectin. These effects were aggravated in sedentary HFD mice but reduced in exercising animals, potentiated by concomitant treatment with IAP, especially in obese mice. Exercising HFD mice demonstrated a substantial increase in the mRNA for adiponectin and a decrease in mRNA leptin expression in intestinal mucosa and mesenteric fat as compared to sedentary animals. The expression of SOD2 and GPx mRNAs was significantly decreased in adipose tissue in HFD mice, but these effects were reversed in exercising mice with IAP administration. Our study shows for the first time that the combination of voluntary exercise and oral IAP treatment synergistically favored healing of intestinal inflammation, strengthened the antioxidant defense and ameliorated the course of experimental colitis; thus, IAP may represent a novel adjuvant therapy to alleviate inflammatory bowel disease (IBD) in humans.

scholarly journals Effect of Forced Physical Activity on the Severity of Experimental Colitis in Normal Weight and Obese Mice. Involvement of Oxidative Stress and Proinflammatory Biomarkers

Nutrients ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 1127 ◽  
Author(s):  
Jan Bilski ◽  
Agnieszka Mazur-Bialy ◽  
Dagmara Wojcik ◽  
Marcin Magierowski ◽  
Marcin Surmiak ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Treadmill Exercise ◽  
Experimental Colitis ◽  
Treadmill Running ◽  
Adaptation Period ◽  
Obese Mice ◽  
Trinitrobenzenesulfonic Acid ◽  
Sod Activity ◽  
Tnf Α ◽  
Colonic Blood Flow

Inflammatory bowel diseases are a heterogeneous group of disorders represented by two major phenotypic forms, Crohn’s disease and ulcerative colitis. Cross talk between adipokines and myokines, as well as changes in intestinal microcirculation, was proposed in pathogenesis of these disorders. C57BL/6 male mice were fed ad libitum for 12 weeks a standard (SD) or high-fat diet (HFD). After the adaptation period, two groups of animals fed SD or HFD were subjected to 6 weeks of the forced treadmill exercise and the experimental colitis was induced in both groups of sedentary and exercising mice fed SD and HFD by intra-colonic administration of 2,4,6-trinitrobenzenesulfonic acid. The disease activity index (DAI), colonic blood flow (CBF), the weight of animals, caloric intake, the mesenteric fad pad, the colonic oxidative stress markers malondialdehyde (MDA), reduced glutathione (GSH), and superoxide dismutase (SOD) activity and intestinal expression and protein content of proinflammatory markers were evaluated. Macroscopic and microscopic colitis in sedentary SD mice was accompanied by a significant fall in CBF and exacerbated in those fed a HFD. The contents of MDA, GSH, and SOD activity were significantly increased in both SD and HFD fed mice with treadmill exercise as compared with sedentary mice. In sedentary HFD mice a significant increase in the intestinal oxidative stress parameters and mucosal expression of IL-1β, TNF-α, IL-17, IFNγ, IL-6, and IL-10 protein were observed and these effects were aggravated in mice subjected to forced treadmill exercise. The mucosal expression of mRNA for TNF-α, IL-1β, iNOS, COX-2, SOD-1, SOD-2, GPx mRNAs, and the hypoxia inducible factor (HIF)-1α protein expression were upregulated in colonic mucosa of treadmill exercising HFD mice with colitis compared with those without exercise. We conclude that forced treadmill running exacerbates the severity of colonic damage in obese mice due to a fall in colonic microcirculation, an increase in oxidative stress, and the rise in expression and activity of proinflammatory biomarkers.

scholarly journals White tea (Camellia sinensis) extract reduces oxidative stress and triacylglycerols in obese mice

2012 ◽  
Vol 32 (4) ◽  
pp. 733-741 ◽  
Author(s):  
Lílian Gonçalves Teixeira ◽  
Priscilla Ceci Lages ◽  
Tatianna Lemos Jascolka ◽  
Edenil Costa Aguilar ◽  
Fabíola Lacerda Pires Soares ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Body Weight ◽  
Adipose Tissue ◽  
Camellia Sinensis ◽  
Reduce Food Intake ◽  
Obese Mice ◽  
White Tea ◽  
Diet Induced Obesity ◽  
Tea Extract ◽  
The Relationship

White tea is an unfermented tea made from young shoots of Camellia sinensis protected from sunlight to avoid polyphenol degradation. Although its levels of catechins are higher than those of green tea (derived from the same plant), there are no studies addressing the relationship between this tea and obesity associated with oxidative stress.The objective of this study was to evaluate the effect of white tea on obesity and its complications using a diet induced obesity model. Forty male C57BL/6 mice were fed a high-fat diet to induce obesity (Obese group) or the same diet supplemented with 0.5% white tea extract (Obese + WTE) for 8 weeks. Adipose tissue, serum lipid profile, and oxidative stress were studied. White tea supplementation was not able to reduce food intake, body weight, or visceral adiposity. Similarly, there were no changes in cholesterol rich lipoprotein profile between the groups. A reduction in blood triacylglycerols associated with increased cecal lipids was observed in the group fed the diet supplemented with white tea. White tea supplementation also reduced oxidative stress in liver and adipose tissue. In conclusion, white tea extract supplementation (0.5%) does not influence body weight or adiposity in obese mice. Its benefits are restricted to the reduction in oxidative stress associated with obesity and improvement of hypertriacylglycerolemia.

scholarly journals High-fat diet promotes experimental colitis by inducing oxidative stress in the colon

2019 ◽  
Vol 317 (4) ◽  
pp. G453-G462 ◽  
Author(s):  
Xue Li ◽  
Xinzhi Wei ◽  
Yue Sun ◽  
Jie Du ◽  
Xin Li ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
High Fat Diet ◽  
Experimental Colitis ◽  
Mucosal Barrier ◽  
Mucosal Inflammation ◽  
High Fat ◽  
Trinitrobenzenesulfonic Acid ◽  
Barrier Permeability ◽  
Inflammatory Bowel ◽  
Colitis Model

Diets high in animal fats are associated with increased risks of inflammatory bowel disease, but the mechanism remains unclear. In this study, we investigated the effect of high-fat diet (HFD) on the development of experimental colitis in mice. Relative to mice fed low-fat diet (LFD), HFD feeding for 4 wk increased the levels of triglyceride, cholesterol, and free fatty acids in the plasma as well as within the colonic mucosa. In an experimental colitis model induced by 2,4,6-trinitrobenzenesulfonic acid (TNBS), mice on 4-wk HFD exhibited more severe colonic inflammation and developed more severe colitis compared with the LFD counterparts. HFD feeding resulted in higher production of mucosal pro-inflammatory cytokines, greater activation of the myosin light chain kinase (MLCK) tight junction regulatory pathway, and greater increases in mucosal barrier permeability in mice following TNBS induction. HFD feeding also induced gp91, an NADPH oxidase subunit, and promoted reactive oxygen species (ROS) production in both colonic epithelial cells and lamina propria cells. In HCT116 cell culture, palmitic acid or palmitic acid and TNF-α combination markedly increased ROS production and induced the MLCK pathway, and these effects were markedly diminished in the presence of a ROS scavenger. Taken together, these data suggest that HFD promotes colitis by aggravating mucosal oxidative stress, which rapidly drives mucosal inflammation and increases intestinal mucosal barrier permeability. NEW & NOTEWORTHY This study demonstrates high-fat diet feeding promotes colitis in a 2,4,6-trinitrobenzenesulfonic acid-induced experimental colitis model in mice. The underlying mechanism is that high-fat diet induces oxidative stress in the colonic mucosa, which increases colonic epithelial barrier permeability and drives colonic mucosal inflammation. These observations provide molecular evidence that diets high in saturated fats are detrimental to patients with inflammatory bowel diseases.

scholarly journals Bacteroides uniformis CECT 7771 alleviates inflammation within the gut-adipose tissue axis involving TLR5 signaling in obese mice

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Emanuel Fabersani ◽  
Kevin Portune ◽  
Isabel Campillo ◽  
Inmaculada López-Almela ◽  
Sergio Montserrat-de la Paz ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Body Weight Gain ◽  
Western Diet ◽  
Lymphoid Cells ◽  
Epididymal Adipose Tissue ◽  
Oral Glucose ◽  
Standard Diet ◽  
Intestinal Bacterium ◽  
Metabolic Dysfunction ◽  
Obese Mice

AbstractThis study investigated the immune mechanisms whereby administration of Bacteroides uniformis CECT 7771 reduces metabolic dysfunction in obesity. C57BL/6 adult male mice were fed a standard diet or a Western diet high in fat and fructose, supplemented or not with B. uniformis CECT 7771 for 14 weeks. B. uniformis CECT 7771 reduced body weight gain, plasma cholesterol, triglyceride, glucose, and leptin levels; and improved oral glucose tolerance in obese mice. Moreover, B. uniformis CECT 7771 modulated the gut microbiota and immune alterations associated with obesity, increasing Tregs and reducing B cells, total macrophages and the M1/M2 ratio in both the gut and epididymal adipose tissue (EAT) of obese mice. B. uniformis CECT 7771 also increased the concentration of the anti-inflammatory cytokine IL-10 in the gut, EAT and peripheral blood, and protective cytokines TSLP and IL-33, involved in Treg induction and type 2 innate lymphoid cells activation, in the EAT. It also restored the obesity–reduced TLR5 expression in the ileum and EAT. The findings indicate that the administration of a human intestinal bacterium with immunoregulatory properties on the intestinal mucosa helps reverse the immuno-metabolic dysfunction caused by a Western diet acting over the gut-adipose tissue axis.

scholarly journals Increased inflammation, oxidative stress and mitochondrial respiration in brown adipose tissue from obese mice

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Martín Alcalá ◽  
María Calderon-Dominguez ◽  
Eduviges Bustos ◽  
Pilar Ramos ◽  
Núria Casals ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Adipose Tissue ◽  
Brown Adipose Tissue ◽  
Mitochondrial Respiration ◽  
Obese Mice ◽  
Brown Adipose
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