scholarly journals In Vitro Characterization of Gut Microbiota-Derived Commensal Strains: Selection of Parabacteroides distasonis Strains Alleviating TNBS-Induced Colitis in Mice

Cells ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 2104 ◽  
Author(s):  
Bernardo Cuffaro ◽  
Aka L. W. Assohoun ◽  
Denise Boutillier ◽  
Lenka Súkeníková ◽  
Jérémy Desramaut ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Chronic Diseases ◽  
Protective Effects ◽  
Gut Barrier ◽  
Regulatory T Lymphocytes ◽  
In Vitro Characterization ◽  
Health Promoting ◽  
Inflammatory Bowel

Alterations in the gut microbiota composition and diversity seem to play a role in the development of chronic diseases, including inflammatory bowel disease (IBD), leading to gut barrier disruption and induction of proinflammatory immune responses. This opens the door for the use of novel health-promoting bacteria. We selected five Parabacteroides distasonis strains isolated from human adult and neonates gut microbiota. We evaluated in vitro their immunomodulation capacities and their ability to reinforce the gut barrier and characterized in vivo their protective effects in an acute murine model of colitis. The in vitro beneficial activities were highly strain dependent: two strains exhibited a potent anti-inflammatory potential and restored the gut barrier while a third strain reinstated the epithelial barrier. While their survival to in vitro gastric conditions was variable, the levels of P. distasonis DNA were higher in the stools of bacteria-treated animals. The strains that were positively scored in vitro displayed a strong ability to rescue mice from colitis. We further showed that two strains primed dendritic cells to induce regulatory T lymphocytes from naïve CD4+ T cells. This study provides better insights on the functionality of commensal bacteria and crucial clues to design live biotherapeutics able to target inflammatory chronic diseases such as IBD.

Protective effects of a novel probiotic strain, Lactococcus lactis ML2018, in colitis: in vivo and in vitro evidence

2019 ◽  
Vol 10 (2) ◽  
pp. 1132-1145 ◽  
Author(s):  
Meiling Liu ◽  
Xiuxia Zhang ◽  
Yunpeng Hao ◽  
Jinhua Ding ◽  
Jing Shen ◽  
...  
Keyword(s):  
Immune Responses ◽  
Lactococcus Lactis ◽  
Intestinal Microbiota ◽  
Inflammatory Bowel Diseases ◽  
Probiotic Strain ◽  
Protective Effects ◽  
Bowel Diseases ◽  
Inflammatory Bowel

Multiple articles have confirmed that an imbalance of the intestinal microbiota is closely related to aberrant immune responses of the intestines and to the pathogenesis of inflammatory bowel diseases (IBDs).

Effects of flavonoids on intestinal inflammation, barrier integrity and changes in gut microbiota during diet-induced obesity

2016 ◽  
Vol 29 (2) ◽  
pp. 234-248 ◽  
Author(s):  
Katherine Gil-Cardoso ◽  
Iris Ginés ◽  
Montserrat Pinent ◽  
Anna Ardévol ◽  
Mayte Blay ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Gut Microbiota ◽  
Intestinal Inflammation ◽  
Mucosal Barrier ◽  
Low Grade ◽  
Protective Effects ◽  
Barrier Integrity ◽  
Diet Induced Obesity

AbstractDiet-induced obesity is associated with low-grade inflammation, which, in most cases, leads to the development of metabolic disorders, primarily insulin resistance and type 2 diabetes. Although prior studies have implicated the adipose tissue as being primarily responsible for obesity-associated inflammation, the latest discoveries have correlated impairments in intestinal immune homeostasis and the mucosal barrier with increased activation of the inflammatory pathways and the development of insulin resistance. Therefore, it is essential to define the mechanisms underlying the obesity-associated gut alterations to develop therapies to prevent and treat obesity and its associated diseases. Flavonoids appear to be promising candidates among the natural preventive treatments that have been identified to date. They have been shown to protect against several diseases, including CVD and various cancers. Furthermore, they have clear anti-inflammatory properties, which have primarily been evaluated in non-intestinal models. At present, a growing body of evidence suggests that flavonoids could exert a protective role against obesity-associated pathologies by modulating inflammatory-related cellular events in the intestine and/or the composition of the microbiota populations. The present paper will review the literature to date that has described the protective effects of flavonoids on intestinal inflammation, barrier integrity and gut microbiota in studies conducted using in vivo and in vitro models.

scholarly journals Pomegranate as a natural source of phenolic antioxidants

2020 ◽  
Vol 9 ◽  
Author(s):  
Fellipe Lopes De Oliveira ◽  
Thaise Yanka Portes Arruda ◽  
Renan Da Silva Lima ◽  
Sabrina Neves Casarotti ◽  
Maressa Caldeira Morzelle
Keyword(s):  
Antioxidant Activity ◽  
Chronic Diseases ◽  
Biological Effects ◽  
Meat Products ◽  
Phenolic Antioxidants ◽  
Antioxidant Compounds ◽  
Health Promoting

Pomegranate, a recognized source of phenolic compounds, has been associated with health-promoting benefits, mostly due to its antioxidant activity. Ellagic and gallic acids, anthocyanins, and ellagitannins are the main phenolics in pomegranate, showing antioxidant activity. For this reason, pomegranate has been used in foods, such as meat products, as an attempt to retard lipid oxidation and increase shelf-life. In recent years, in vitro, in vivo, and human studies reported the antioxidant activity of pomegranate, especially its peels, with reduced incidence of chronic diseases (e.g., cardiovascular ailments, cancer, neurodegenerative disease, type 2 diabetes, chronic kidney disease). This review aims to present the main antioxidant compounds on pomegranate and their biological effects, the antioxidant activity of pomegranate-based foods, the application of pomegranate as a natural antioxidant food additive, the role of pomegranate in the prevention and management of chronic diseases, as well as the trends and prospects regarding the application of pomegranate in innovative food and health.

Health-Improving and Disease-Preventing Potential of Camel Milk Against Chronic Diseases and Autism

2020 ◽  
pp. 155-184
Author(s):  
Mo'ez Al-Islam Ezzat Faris ◽  
Hadeel Ghazzawi
Keyword(s):  
Chronic Diseases ◽  
Molecular Mechanisms ◽  
Experimental Studies ◽  
Nutritional Composition ◽  
Camel Milk ◽  
Bowel Diseases ◽  
Liver And Kidney ◽  
Health Promoting

Camel milk has been used as part of the human diet since ancient times. This chapter tries to elaborate the different aspects of nutraceutical functional properties of camel milk, focusing on the nutritional composition, presence of bioactive zoochemicals and peptides, antioxidant nutrients (vitamin C), and health rendering properties of this unique milk. Recent research has identified camel milk as a prophylactic and therapeutic functional food due to its noticeable content of essential macronutrients, namely bioactive functional proteins and peptides, along with its considerable content of essential micronutrients. Indeed, the presence of this unique mixture has shown to be promising contributors to the management and prevention of chronic diseases, such as cancer, diabetes, liver and kidney, metabolic syndrome, inflammatory bowel diseases in adults, and autism. In vivo, in vitro, and epidemiological and experimental studies were reviewed, and molecular mechanisms were highlighted for better understanding of the health-promoting, disease-preventing potential of camel milk.

scholarly journals Loss of NHE3 alters gut microbiota composition and influencesBacteroides thetaiotaomicrongrowth

2013 ◽  
Vol 305 (10) ◽  
pp. G697-G711 ◽  
Author(s):  
Melinda A. Engevik ◽  
Eitaro Aihara ◽  
Marshall H. Montrose ◽  
Gary E. Shull ◽  
Daniel J. Hassett ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Ion Transport ◽  
Terminal Ileum ◽  
Ion Composition ◽  
Intestinal Environment ◽  
Integral Role ◽  
Inflammatory Bowel ◽  
Specific Alteration

Changes in the intestinal microbiota have been linked to diabetes, obesity, inflammatory bowel disease, and Clostridium difficile ( C. difficile)-associated disease. Despite this, it remains unclear how the intestinal environment, set by ion transport, affects luminal and mucosa-associated bacterial composition. Na+/H+-exchanger isoform 3 (NHE3), a target of C. difficile toxin B, plays an integral role in intestinal Na+absorption. Thus the NHE3-deficient mouse model was chosen to examine the effect of pH and ion composition on bacterial growth. We hypothesized that ion transport-induced change in the intestinal environment would lead to alteration of the microbiota. Region-specific changes in ion composition and pH correlated with region-specific alteration of luminal and mucosal-associated bacteria with general decreases in Firmicutes and increases in Bacteroidetes members. Bacteroides thetaiotaomicron ( B. thetaiotaomicron) increased in NHE3−/−terminal ileum and was examined in vitro to determine whether altered Na+was sufficient to affect growth. Increased in vitro growth of B. thetaiotaomicron occurred in 43 mM Na+correlating with the NHE3−/−mouse terminal ileum [Na+]. NHE3−/−terminal ileum displayed increased fut2 mRNA and fucosylation correlating with B. thetaiotaomicron growth. Inoculation of B. thetaiotaomicron in wild-type and NHE3−/−terminal ileum organoids displayed increased fut2 and fucosylation, indicating that B. thetaiotaomicron alone is sufficient for the increased fucosylation seen in vivo. These data demonstrate that loss of NHE3 alters the intestinal environment, leading to region-specific changes in bacteria, and shed light on the growth requirements of some gut microbiota members, which is vital for creating better treatments of complex diseases with an altered gut microbiota.

scholarly journals Multiple Selection Criteria for Probiotic Strains with High Potential for Obesity Management

Nutrients ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 713
Author(s):  
Jeanne Alard ◽  
Benoit Cudennec ◽  
Denise Boutillier ◽  
Véronique Peucelle ◽  
Amandine Descat ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Leptin Receptor ◽  
Body Weight Gain ◽  
Bifidobacterium Longum ◽  
Protective Effects ◽  
Metabolic Dysfunction ◽  
Diet Induced Obesity ◽  
Probiotic Strains

Since alterations of the gut microbiota have been shown to play a major role in obesity, probiotics have attracted attention. Our aim was to identify probiotic candidates for the management of obesity using a combination of in vitro and in vivo approaches. We evaluated in vitro the ability of 23 strains to limit lipid accumulation in adipocytes and to enhance the secretion of satiety-promoting gut peptide in enteroendocrine cells. Following the in vitro screening, selected strains were further investigated in vivo, single, or as mixtures, using a murine model of diet-induced obesity. Strain Bifidobacterium longum PI10 administrated alone and the mixture of B. animalis subsp. lactis LA804 and Lactobacillus gasseri LA806 limited body weight gain and reduced obesity-associated metabolic dysfunction and inflammation. These protective effects were associated with changes in the hypothalamic gene expression of leptin and leptin receptor as well as with changes in the composition of gut microbiota and the profile of bile acids. This study provides crucial clues to identify new potential probiotics as effective therapeutic approaches in the management of obesity, while also providing some insights into their mechanisms of action.

scholarly journals In vitro and in vivo antioxidant potential of milks, yoghurts, fermented milks and cheeses: a narrative review of evidence

2017 ◽  
Vol 31 (1) ◽  
pp. 52-70 ◽  
Author(s):  
Anthony Fardet ◽  
Edmond Rock
Keyword(s):  
Antioxidant Enzymes ◽  
Chronic Diseases ◽  
Dairy Products ◽  
Positive Impact ◽  
Dairy Product ◽  
Antioxidant Potential ◽  
Protective Effects ◽  
Antioxidant Peptides

AbstractThe antioxidant potential (AP) is an important nutritional property of foods, as increased oxidative stress is involved in most diet-related chronic diseases. In dairy products, the protein fraction contains antioxidant activity, especially casein. Other antioxidants include: antioxidant enzymes; lactoferrin; conjugated linoleic acid; coenzyme Q10; vitamins C, E, A and D3; equol; uric acid; carotenoids; and mineral activators of antioxidant enzymes. The AP of dairy products has been extensively studied in vitro, with few studies in animals and human subjects. Available in vivo studies greatly differ in their design and objectives. Overall, on a 100 g fresh weight-basis, AP of dairy products is close to that of grain-based foods and vegetable or fruit juices. Among dairy products, cheeses present the highest AP due to their higher protein content. AP of milk increases during digestion by up to 2·5 times because of released antioxidant peptides. AP of casein is linked to specific amino acids, whereas β-lactoglobulin thiol groups play a major role in the AP of whey. Thermal treatments such as ultra-high temperature processing have no clear effect on the AP of milk. Raw fat-rich milks have higher AP than less fat-rich milk, because of lipophilic antioxidants. Probiotic yoghurts and fermented milks have higher AP than conventional yoghurt and milk because proteolysis by probiotics releases antioxidant peptides. Among the probiotics, Lactobacillus casei/acidophilus leads to the highest AP. The data are insufficient for cheese, but fermentation-based changes appear to make a positive impact on AP. In conclusion, AP might participate in the reported dairy product-protective effects against some chronic diseases.

scholarly journals Carotenoids of Capsicum Fruits: Pigment Profile and Health-Promoting Functional Attributes

Antioxidants ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 469 ◽  
Author(s):  
Norazian Mohd Hassan ◽  
Nurul Asyiqin Yusof ◽  
Amirah Fareeza Yahaya ◽  
Nurul Nasyitah Mohd Rozali ◽  
Rashidi Othman
Keyword(s):  
Protective Effects ◽  
Functional Attributes ◽  
Fruit Maturity ◽  
Health Promoting ◽  
Pigment Profile ◽  
Capsicum Species ◽  
Pharmacologically Active ◽  
Carotenoid Profile

Pepper of the Capsicum species is a common ingredient in various food preparations by different cultures worldwide. The Capsicum is recognised by its five main domesticated species, namely Capsicum annuum, C. baccatum, C. chinense, C. frutescens and C. pubescens. The genetic diversity in Capsicum offers fruits in wide ranges of morphology and carotenoid profile. Carotenoids enhance the value of pepper from a nutritional standpoint, despite being commonly prized for the pharmacologically active pungent capsaicinoids. Carotenoids of pepper comprise mainly of the unique, powerful and highly stable capsanthin and capsoroubin, together with β-carotene, β-cryptoxanthin, lutein, zeaxanthin, antheraxanthin and violaxanthin. These carotenoids are present at diverse profile and varying levels, biosynthetically connected to the fruit maturity stages. This review describes the health-promoting functional attributes of the carotenoids that are mainly associated with their excellent role as lipophilic antioxidants. Capsicum as a great source of carotenoids is discussed in the aspects of main domesticated species, biosynthesis, pigment profile, antioxidant activity and safety. Findings from a number of in vitro, in vivo and clinical studies provided appreciable evidence on the protective effects of pepper’s carotenoids against degenerative diseases. Hence, pepper with its functional carotenoids might be recommended in health-promoting and disease preventing strategies.

Granisetron ameliorates acetic acid-induced colitis in rats

2010 ◽  
Vol 29 (4) ◽  
pp. 321-328 ◽  
Author(s):  
Gohar Fakhfouri ◽  
Reza Rahimian ◽  
Ali Daneshmand ◽  
Arash Bahremand ◽  
Mohammad Reza Rasouli ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Interleukin 1 ◽  
Myeloperoxidase Activity ◽  
Protective Effects ◽  
Concurrent Administration ◽  
Necrosis Factor Alpha ◽  
Inflammatory Bowel ◽  
Factor Alpha

Inflammatory bowel disease (IBD) is a chronically relapsing inflammation of the gastrointestinal tract, of which the definite etiology remains ambiguous. Considering the adverse effects and incomplete efficacy of currently administered drugs, it is indispensable to explore new candidates with more desirable therapeutic profiles. 5-HT 3 receptor antagonists have shown analgesic and anti-inflammatory properties in vitro and in vivo. This study aims to investigate granisetron, a 5-HT 3 receptor antagonist, in acetic acid-induced rat colitis and probable involvement of 5-HT3 receptors. Colitis was rendered by instillation of 1 mL of 4% acetic acid (vol/vol) and after 1 hour, granisetron (2 mg/kg), dexamethasone (1 mg/kg), meta-chlorophenylbiguanide (mCPBG, 5 mg/kg), a 5-HT 3 receptor agonist, or granisetron + mCPBG was given intraperitoneally. Twenty-four hours following colitis induction, animals were sacrificed and distal colons were assessed macroscopically, histologically and biochemically (malondialdehyde, myeloperoxidase, tumor necrosis factor-alpha, interleukin-1 beta and interleukin-6). Granisetron or dexamethasone significantly (p < .05) improved macroscopic and histologic scores, curtailed myeloperoxidase activity and diminished colonic levels of inflammatory cytokines and malondialdehyde. The protective effects of granisetron were reversed by concurrent administration of mCPBG. Our data suggests that the salutary effects of granisetron in acetic acid colitis could be mediated by 5-HT3 receptors.

scholarly journals Potential Modulatory Microbiome Therapies for Prevention or Treatment of Inflammatory Bowel Diseases

2021 ◽  
Vol 14 (6) ◽  
pp. 506
Author(s):  
Daan V. Bunt ◽  
Adriaan J. Minnaard ◽  
Sahar El Aidy
Keyword(s):  
Inflammatory Bowel Disease ◽  
Fatty Acids ◽  
Gut Microbiota ◽  
Short Chain Fatty Acids ◽  
In Vivo Models ◽  
Gut Homeostasis ◽  
Bowel Diseases ◽  
Inflammatory Bowel

A disturbed interaction between the gut microbiota and the mucosal immune system plays a pivotal role in the development of inflammatory bowel disease (IBD). Various compounds that are produced by the gut microbiota, from its metabolism of diverse dietary sources, have been found to possess anti-inflammatory and anti-oxidative properties in in vitro and in vivo models relevant to IBD. These gut microbiota-derived metabolites may have similar, or more potent gut homeostasis-promoting effects compared to the widely-studied short-chain fatty acids (SCFAs). Available data suggest that mainly members of the Firmicutes are responsible for producing metabolites with the aforementioned effects, a phylum that is generally underrepresented in the microbiota of IBD patients. Further efforts aiming at characterizing such metabolites and examining their properties may help to develop novel modulatory microbiome therapies to treat or prevent IBD.

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