scholarly journals Host/microbiota interactions in health and diseases—Time for mucosal microbiology!

2021 ◽  
Author(s):  
Noëmie Daniel ◽  
Emelyne Lécuyer ◽  
Benoit Chassaing
Keyword(s):  
Microbial Population ◽  
Intestinal Inflammation ◽  
Inflammatory Diseases ◽  
Chronic Inflammatory Diseases ◽  
Disease States ◽  
Wide Range ◽  
Chronic Intestinal Inflammation

AbstractDuring the last 20 years, a new field of research delineating the importance of the microbiota in health and diseases has emerged. Inappropriate host-microbiota interactions have been shown to trigger a wide range of chronic inflammatory diseases, and defining the exact mechanisms behind perturbations of such relationship, as well as ways by which these disturbances can lead to disease states, both remain to be fully elucidated. The mucosa-associated microbiota constitutes a recently studied microbial population closely linked with the promotion of chronic intestinal inflammation and associated disease states. This review will highlight seminal works that have brought into light the importance of the mucosa-associated microbiota in health and diseases, emphasizing the challenges and promises of expending the mucosal microbiology field of research.

scholarly journals Cross-tissue, single-cell stromal atlas identifies shared pathological fibroblast phenotypes in four chronic inflammatory diseases

2021 ◽  
Author(s):  
Ilya Korsunsky ◽  
Kevin Wei ◽  
Mathilde Pohin ◽  
Edy Y. Kim ◽  
Francesca Barone ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Inflammatory Bowel Disease ◽  
Single Cell ◽  
Intestinal Inflammation ◽  
Inflammatory Diseases ◽  
Chronic Inflammatory Disease ◽  
Chronic Inflammatory Diseases ◽  
Single Cell Rna Sequencing ◽  
Inflammatory Bowel ◽  
Novel Therapeutic

SummaryPro-inflammatory fibroblasts are critical to pathogenesis in rheumatoid arthritis, inflammatory bowel disease, interstitial lung disease, and Sjögren’s syndrome, and represent a novel therapeutic target for chronic inflammatory disease. However, the heterogeneity of fibroblast phenotypes, exacerbated by the lack of a common cross-tissue taxonomy, has limited the understanding of which pathways are shared by multiple diseases. To investigate, we profiled patient-derived fibroblasts from inflamed and non-inflamed synovium, intestine, lung, and salivary glands with single-cell RNA-sequencing. We integrated all fibroblasts into a multi-tissue atlas to characterize shared and tissue-specific phenotypes. Two shared clusters, CXCL10+CCL19+ immune-interacting and SPARC+COL3A1+ vascular-interacting fibroblasts were expanded in all inflamed tissues and additionally mapped to dermal analogues in a public atopic dermatitis atlas. We further confirmed these human pro-inflammatory fibroblasts in animal models of lung, joint, and intestinal inflammation. This work represents the first cross-tissue, single-cell fibroblast atlas revealing shared pathogenic activation states across four chronic inflammatory diseases.

scholarly journals Lactoferrin in the Prevention and Treatment of Intestinal Inflammatory Pathologies Associated with Colorectal Cancer Development

Cancers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3806
Author(s):  
Antimo Cutone ◽  
Giusi Ianiro ◽  
Maria Stefania Lepanto ◽  
Luigi Rosa ◽  
Piera Valenti ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Intestinal Inflammation ◽  
Epidemiological Data ◽  
Food Supplement ◽  
Microbial Pathogens ◽  
Intestinal Microbiome ◽  
Cancer Development ◽  
Wide Range ◽  
Anti Inflammatory ◽  
Chronic Intestinal Inflammation

The connection between inflammation and cancer is well-established and supported by genetic, pharmacological and epidemiological data. The inflammatory bowel diseases (IBDs), including Crohn’s disease and ulcerative colitis, have been described as important promoters for colorectal cancer development. Risk factors include environmental and food-borne mutagens, dysbalance of intestinal microbiome composition and chronic intestinal inflammation, with loss of intestinal epithelial barrier and enhanced cell proliferation rate. Therapies aimed at shutting down mucosal inflammatory response represent the foundation for IBDs treatment. However, when applied for long periods, they can alter the immune system and promote microbiome dysbiosis and carcinogenesis. Therefore, it is imperative to find new safe substances acting as both potent anti-inflammatory and anti-pathogen agents. Lactoferrin (Lf), an iron-binding glycoprotein essential in innate immunity, is generally recognized as safe and used as food supplement due to its multifunctionality. Lf possesses a wide range of immunomodulatory and anti-inflammatory properties against different aseptic and septic inflammatory pathologies, including IBDs. Moreover, Lf exerts anti-adhesive, anti-invasive and anti-survival activities against several microbial pathogens that colonize intestinal mucosa of IBDs patients. This review focuses on those activities of Lf potentially useful for the prevention/treatment of intestinal inflammatory pathologies associated with colorectal cancer development.

scholarly journals Health Promoting Effects of Phytochemicals from Brassicaceae: A Review

2013 ◽  
Vol 1 (03) ◽  
pp. 120-131 ◽  
Author(s):  
Savinder Kaur Mann ◽  
Namita Khanna
Keyword(s):  
Fruits And Vegetables ◽  
Inflammatory Diseases ◽  
Antioxidant Properties ◽  
Natural Antioxidants ◽  
Epidemiological Studies ◽  
Potential Treatment ◽  
Chronic Inflammatory Diseases ◽  
The Past ◽  
Disease States ◽  
Health Promoting

Over the past several years, natural antioxidants have attracted considerable interest as potential treatment for a wide variety of disease states, including cancer and other causes e.g. chronic inflammatory diseases and aging. Therefore, plant derived antioxidants are now receiving a special attention as they possess good antioxidant properties and hence a worldwide trend towards the use of natural phytochemicals present in fruits and vegetables have been reported. Numerous epidemiological studies indicate that consumption of cruciferous vegetables is associated with prevention of cardiovascular diseases and reduced incidence of cancers of the gastrointestinal tract and other sites. The substances that seem to be responsible for these properties are phenolic compounds (phenolic acids, flavonoids, polyphenols etc.) and sulphur-containing organic compound glucosinolates and their derived products. The present review focuses on the health promoting effects of phytochemicals and their beneficial bioactivities in Brassicaceae.

scholarly journals Calprotectin: Clinical Applications in Pediatrics

2016 ◽  
Vol 21 (4) ◽  
pp. 308-321 ◽  
Author(s):  
Oscar R. Herrera ◽  
Michael L. Christensen ◽  
Richard A. Helms
Keyword(s):  
Intestinal Inflammation ◽  
Inflammatory Diseases ◽  
Serum Markers ◽  
Body Fluids ◽  
Monitoring Tool ◽  
Non Invasive ◽  
The Past ◽  
Disease States ◽  
Gi Inflammation ◽  
Future Work

As seen over the past 20 years, calprotectin has evolved as a novel, non-invasive biomarker of gastrointestinal (GI) inflammation. We present this review of calprotectin in pediatrics. This article will focus on studies using calprotectin concentrations from different body fluids to monitor inflammation in different disease states and conditions. The ultimate goal of our group is to lay down a foundation as we consider using calprotectin prospectively as a marker of intestinal inflammation that could lead to further testing and possibly a marker of preparedness for feeding. We surveyed all published studies in English of calprotectin in neonates, infants, children, and adolescents through February 2014. We will discuss calprotectin's basic properties and analysis such as characteristics, identification, presence in body fluids, and maturational development. In addition, calprotectin's use in inflammatory diseases exploring both GI and non-GI conditions will be evaluated and compared with other serum markers presently available. Finally, a summary of our findings and discussion of future work that could be undertaken in order to render calprotectin as a more useful monitoring tool to the medical research community will complete the review.

scholarly journals New Perspectives in the Study of Intestinal Inflammation: Focus on the Resolution of Inflammation

2021 ◽  
Vol 22 (5) ◽  
pp. 2605
Author(s):  
Miguel Camba-Gómez ◽  
Oreste Gualillo ◽  
Javier Conde-Aranda
Keyword(s):  
Inflammatory Bowel Disease ◽  
Bowel Disease ◽  
Intestinal Inflammation ◽  
Inflammatory Diseases ◽  
Point Of View ◽  
Induction Phase ◽  
Resolution Of Inflammation ◽  
Chronic Inflammatory Diseases ◽  
Inflammatory Bowel ◽  
Tissue Trauma

Inflammation is an essential physiological process that is directed to the protection of the organism against invading pathogens or tissue trauma. Most of the existing knowledge related to inflammation is focused on the factors and mechanisms that drive the induction phase of this process. However, since the recognition that the resolution of the inflammation is an active and tightly regulated process, increasing evidence has shown the relevance of this process for the development of chronic inflammatory diseases, such as inflammatory bowel disease. For that reason, with this review, we aimed to summarize the most recent and interesting information related to the resolution process in the context of intestinal inflammation. We discussed the advances in the understanding of the pro-resolution at intestine level, as well as the new mediators with pro-resolutive actions that could be interesting from a therapeutic point of view.

scholarly journals SMAD4 governs a feedforward regulation of the TGF-β-effects in CD8 T cells that contributes to preventing chronic intestinal inflammation

2021 ◽  
Author(s):  
Ramdane Igalouzene ◽  
Hector Hernandez-Vargas ◽  
Nicolas Benech ◽  
David Bauché ◽  
Célia Barrachina ◽  
...  
Keyword(s):  
T Cells ◽  
T Cell ◽  
T Cell Activation ◽  
Cd8 T Cells ◽  
Molecular Mechanisms ◽  
Target Genes ◽  
Intestinal Inflammation ◽  
Cd8 T Cell ◽  
Wide Range ◽  
Chronic Intestinal Inflammation

AbstractSMAD4, a key mediator of TGF-β signaling, plays a crucial role in T cells to prevent chronic gut inflammation. However, the molecular mechanisms underlying this control remain elusive. Using different genetic and epigenetic approaches, we unexpectedly reveal that SMAD4 in CD8 T cells prevents chronic intestinal inflammation by a feedforward mechanism that is TGF-β-independent. Prior to any TGF-β-receptor engagement, SMAD4 acts as an active and basal repressor of epigenetic, transcriptional and functional TGF-β imprinting in CD8 T cells. Thus, in sharp opposition to total TGF-β signaling deletion, SMAD4 deletion impairs naïve CD8 T cell effector predisposition but promotes CD8 T cell accumulation and epithelial retention by promoting their response to IL-7 and their expression of integrins such as Itgae. Besides, SMAD4 deletion unleashes the induction of a wide range of TGF-β-signaling-repressors such as Smad7, Ski, Skil, and Smurf2 and hampers TGF-β-mediated CD8 T cell immunosuppression. Mechanistically, prior to any TGF-β signal, SMAD4 binds to the loci of several TGF-β-target genes, and by regulating histone acetylation, represses their expression. The massive gut epithelial colonization, associated with their escape from the immunoregulatory TGF-β effects overtakes their poor effector preconditioning and elicits microbiota-driven chronic epithelial CD8 T cell activation. Hence, in an anticipatory manner, independently of TGF-β, SMAD4 governs a feedforward regulation of TGF-β effects in CD8 T cells, preventing chronic intestinal inflammation.

Role of CD5 expression on TCRγδ T cell-differentiation and development of chronic intestinal inflammation

2001 ◽  
Vol 120 (5) ◽  
pp. A517-A517
Author(s):  
A MIZOGUCHI ◽  
E MIZOGUCHI ◽  
Y DEJONG ◽  
H TAKEDATSU ◽  
F PREFFER ◽  
...  
Keyword(s):  
Cell Differentiation ◽  
T Cell ◽  
Intestinal Inflammation ◽  
T Cell Differentiation ◽  
Chronic Intestinal Inflammation

Heparin and proteoglycans as anti-inflammatory drugs

1996 ◽  
Vol 16 (01) ◽  
pp. 56-59
Author(s):  
D. J. Tyrrell ◽  
C. P. Page
Keyword(s):  
Inflammatory Diseases ◽  
Therapeutic Applications ◽  
Wide Range ◽  
Inflammatory Drugs ◽  
Anti Inflammatory

SummaryEvidence continues to accumulate that the pleiotropic nature of heparin (beyond its anticoagulant potency) includes anti-inflammatory activities at a number of levels. It is clear that drugs exploiting these anti-inflammatory activities of heparin may offer exciting new therapeutic applications to the treatment of a wide range of inflammatory diseases.

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