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https://www.readbyqxmd.com/read/28811706/therapeutic-potential-of-flavonoids-in-inflammatory-bowel-disease-a-comprehensive-review
#1
REVIEW
Ali Salaritabar, Behrad Darvishi, Farzaneh Hadjiakhoondi, Azadeh Manayi, Antoni Sureda, Seyed Fazel Nabavi, Leo R Fitzpatrick, Seyed Mohammad Nabavi, Anupam Bishayee
The inflammatory process plays a central role in the development and progression of numerous pathological situations, such as inflammatory bowel disease (IBD), autoimmune and neurodegenerative diseases, metabolic syndrome, and cardiovascular disorders. IBDs involve inflammation of the gastrointestinal area and mainly comprise Crohn's disease (CD) and ulcerative colitis (UC). Both pathological situations usually involve recurring or bloody diarrhea, pain, fatigue and weight loss. There is at present no pharmacological cure for CD or UC...
July 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28810577/patchouli-oil-ameliorates-acute-colitis-a-targeted-metabolite-analysis-of-2-4-6-trinitrobenzenesulfonic-acid-induced-rats
#2
Xiuting Yu, Guanghua Yang, Hua Jiang, Shuhai Lin, Yuhong Liu, Xie Zhang, Huifang Zeng, Ziren Su, Song Huang, Linlin Shen, Xiaojun Zhang
The incidence of inflammatory bowel disease (IBD), characterized by chronic, relapsing intestinal inflammation, has continually increased in recent years. A previous study by our group identified five potential metabolic markers possibly associated with the pathology of 2,4,6-trinitrobenzenesulfonic acid (TNBS)-induced IBD in rats. The present study aimed to examine the potential therapeutic effects of the essential oil of Pogostemon cablin (also known as patchouli; PO) on TNBS-induced rats and investigate the concomitant metabolic changes by targeting the previously identified potential markers...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28806280/integrated-analysis-of-biopsies-from-inflammatory-bowel-disease-patients-identifies-saa1-as-a-link-between-mucosal-microbes-with-th17-and-th22-cells
#3
Mei San Tang, Rowann Bowcutt, Jacqueline M Leung, Martin J Wolff, Uma M Gundra, David Hudesman, Lisa B Malter, Michael A Poles, Lea Ann Chen, Zhiheng Pei, Antonio G Neto, Wasif M Abidi, Thomas Ullman, Lloyd Mayer, Richard A Bonneau, Ilseung Cho, Pʼng Loke
BACKGROUND: Inflammatory bowel diseases (IBD) are believed to be driven by dysregulated interactions between the host and the gut microbiota. Our goal is to characterize and infer relationships between mucosal T cells, the host tissue environment, and microbial communities in patients with IBD who will serve as basis for mechanistic studies on human IBD. METHODS: We characterized mucosal CD4 T cells using flow cytometry, along with matching mucosal global gene expression and microbial communities data from 35 pinch biopsy samples from patients with IBD...
August 9, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28806140/adherent-invasive-e-coli-enhances-colonic-hypersensitivity-and-p2x-receptors-expression-during-post-infectious-period
#4
Amandine Lashermes, Ludivine Boudieu, Julie Barbier, Benoit Sion, Agathe Gelot, Nicolas Barnich, Denis Ardid, Frédéric Antonio Carvalho
Irritable Bowel Syndrome (IBS) and Inflammatory Bowel Disease (IBD) are related gastrointestinal disorders characterized by abdominal pain associated with colonic hypersensitivity (CHS). Studies in humans have reported an abnormal colonization of Adherent-Invasive E. coli (AIEC) in the ileum of Crohn's disease (CD) patients associated with overexpression of the bacterial colonizing receptor CEACAM6. The aim of the present study was to investigate whether AIEC reference strain LF82 could induce intestinal impairment during infectious and/or post-infectious periods and subsequently the development of CHS...
August 14, 2017: Gut Microbes
https://www.readbyqxmd.com/read/28804488/anti-adhesion-therapies-in-inflammatory-bowel-disease-molecular-and-clinical-aspects
#5
REVIEW
Sebastian Zundler, Emily Becker, Carl Weidinger, Britta Siegmund
The number of biologicals for the therapy of immunologically mediated diseases is constantly growing. In contrast to other agents that were previously introduced in rheumatologic or dermatologic diseases and only later adopted for the treatment of inflammatory bowel diseases (IBDs), the field of IBD was ground breaking for the concept of anti-adhesion blockade. Anti-adhesion antibodies selectively target integrins controlling cell homing to the intestine, which leads to reduction of inflammatory infiltration to the gut in chronic intestinal inflammation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28800679/the-short-chain-fatty-acid-sodium-butyrate-exerts-protective-effects-through-ameliorating-blood-milk-barrier-disruption-and-modulating-inflammatory-response-in-lipopolysaccharide-induced-mastitis-model
#6
Jing-Jing Wang, Zheng-Kai Wei, Xu Zhang, Ya-Nan Wang, Yun-He Fu, Zheng-Tao Yang
BACKGROUND AND PURPOSE: Short-chain fatty acids (SCFAs) are fermentation end products produced by the gut bacteria,which have been shown to ameliorate inflammatory bowel diseases (IBD) and allergic asthma. However, the mechanism involved remains largely unknown. Here, we investigate the protective effects and mechanisms of sodium butyrate (SB) on lipopolysaccharide (LPS)-induced mastitis model. EXPERIMENTAL APPROACH: Effects of increasing doses of SB on blood-milk barrier function and inflammation are studied in LPS-induced mastitis...
August 11, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28800645/analysis-of-endogenous-lipids-during-intestinal-wound-healing
#7
Yunna Lee, Jieun Choo, Su Jin Kim, Gwangbeom Heo, Charalabos Pothoulakis, Yong-Hak Kim, Eunok Im
Intestinal wound healing is a new therapeutic goal for inflammatory bowel disease (IBD) as complete healing of the mucosa is the key element of clinical remission in IBD. Previous studies showed that termination of inflammation can be achieved by adding pro-resolving lipids like DHA and EPA exogenously. However, the roles of these lipids in mucosal healing have not been investigated. To recapitulate intestinal healing process, mice were received dextran sodium sulfate (DSS) for 7 days in the drinking water followed by regular tap water for 5 additional days...
2017: PloS One
https://www.readbyqxmd.com/read/28799796/immune-modulation-by-curcumin-the-role-of-interleukin-10
#8
Hamid Mollazadeh, Arrigo F G Cicero, Christopher N Blesso, Matteo Pirro, Muhammed Majeed, Amirhossein Sahebkar
Cytokines are small secreted proteins released by different types of cells with specific effects on cellular signaling and communication via binding to their receptors on the cell surface. IL-10 is known to be a pleiotropic and potent anti-inflammatory and immunosuppressive cytokine that is produced by both innate and adaptive immunity cells including dendritic cells, macrophages, mast cells, natural killer cells, eosinophils, neutrophils, B cells, CD8(+) T cells, and TH1, TH2, and TH17 and regulatory T cells...
August 11, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28798196/the-hypoxia-adenosine-link-during-inflammation
#9
Jessica L Bowser, Jae W Lee, Xiaoyi Yuan, Holger K Eltzschig
Hypoxic tissue conditions occur during a number of inflammatory diseases and are associated with the breakdown of barriers and induction of pro-inflammatory responses. At the same time, hypoxia is also known to induce several adaptive and tissue-protective pathways that dampen inflammation and protect tissue integrity. Hypoxia inducible factors (HIFs) that are stabilized during inflammatory or hypoxic conditions are at the center of mediating these responses. In the past decade, several genes regulating extracellular adenosine metabolism and signaling have been identified as being direct targets of HIFs...
August 10, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28798075/cytokines-of-the-il-1-family-recognized-targets-in-chronic-inflammation-underrated-in-organ-transplantations
#10
REVIEW
Ilja Striz
Interleukin 1 (IL-1) family is a group of cytokines with multiple local and systemic effects, which regulates both innate and adaptive immune responses. Generally, most IL-1 family cytokines express prevailing pro-inflammatory activities (IL-1α, IL-1β, IL-18, IL-33, IL-36 α, β, γ), whereas others are anti-inflammatory (IL-1Ra (IL-1 receptor antagonist), IL-36Ra, IL-38, IL-37). In addition to their immunomodulatory roles, some of them are also involved in the physiological modulation of homeostatic processes and directly affect mRNA transcription...
September 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28797160/ileocolonoscopic-findings-in-patients-with-ankylosing-spondylitis-a-single-center-retrospective-study
#11
Soo Min Ahn, Yong-Gil Kim, Seung-Hyeon Bae, Doo-Ho Lim, Seokchan Hong, Sang Hyoung Park, Chang-Keun Lee, Bin Yoo
Background/Aims: In some Western countries, up to 50% of patients with ankylosing spondylitis (AS) have subclinical gut inflammation. This study was conducted to evaluate the prevalence and severity of gut inflammation and to determine clinical factors associated with colonic inflammation in Korean AS patients who performed ileocolonoscopy without evidence of established inf lammatory bowel diseases before. Methods: One hundred and eight AS patients who underwent ileocolonoscopy were included in this study...
August 11, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28797042/cytokine-production-profile-in-intestinal-mucosa-of-paediatric-inflammatory-bowel-disease
#12
Serena Vitale, Caterina Strisciuglio, Laura Pisapia, Erasmo Miele, Pasquale Barba, Alessandra Vitale, Sabrina Cenni, Virginia Bassi, Mariantonia Maglio, Giovanna Del Pozzo, Riccardo Troncone, Annamaria Staiano, Carmen Gianfrani
In the recent years, the incidence of inflammatory bowel disease (IBD) has dramatically increased in young subjects, however, the pathogenesis of paediatric IBD is poorly investigated. In this study we aimed to evaluate the cytokine pattern and the phenotype of cytokine producing cells in the intestinal mucosa of paediatric patients affected by Crohn's disease (CD) or ulcerative colitis (UC) and of non-IBD healthy controls (HC). Cytokine (IL-15, TNF-α, INF-γ) production was analyzed at basal condition and after mitogen stimulation either intracellularly by flow cytometry or in intestinal cell culture supernatants by enzyme-linked immunosorbent assay (ELISA)...
2017: PloS One
https://www.readbyqxmd.com/read/28795875/animal-models-for-studying-epithelial-barriers-in-neonatal-necrotizing-enterocolitis-inflammatory-bowel-disease-and-colorectal-cancer
#13
Tiaosi Xing, Rolando Camacho Salazar, Yan-Hua Chen
The intestinal epithelial cells line the luminal surface of the entire gastrointestinal tract which is crucial for the absorption of nutrients and prevention of pathogens entering from the external environment. The epithelial barrier plays an important role in organ development, disease pathogenesis, and aging. The major component of an epithelial barrier is the single columnar epithelium and tight junctions. Tight junctions are located at the most apical region of the junctional complex and contain many integral membrane proteins, such as occludin, the claudin family, and junctional adhesion molecules (JAMs)...
July 20, 2017: Tissue Barriers
https://www.readbyqxmd.com/read/28794235/integrin-linked-kinase-expression-in-myeloid-cells-promotes-inflammatory-signaling-during-experimental-colitis
#14
Afsar U Ahmed, Howard C H Yim, Mariah Alorro, Matthias Ernst, Bryan R G Williams
The pathology of inflammatory bowel diseases is driven by the inflammatory signaling pathways associated with mucosal epithelial damage. Myeloid cells are known to play an essential role in mediating epithelial inflammatory responses during injury. However, the precise role of these cells in stimulating intestinal inflammation and the subsequent tissue damage is unclear. In this article, we show that expression of integrin-linked kinase (ILK) in myeloid cells is critical for the epithelial inflammatory signaling during colitis induced by dextran sodium sulfate...
August 9, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28790093/aggressive-large-cell-neuroendocrine-carcinoma-of-the-sigmoid-colon-in-a-patient-with-ulcerative-colitis
#15
Patrick Stoner, Taban Ghaffaripour, David Cohen
Colonic inflammation seen in inflammatory bowel disease (IBD) predisposes to the development of colorectal adenocarcinoma. In contrast, colorectal neuroendocrine carcinomas (NECs) have rarely been reported in the setting of IBD, and no definitive relationship between these tumours and IBD has been established. Dysplasia from chronic inflammation leading to neuroendocrine cell differentiation may be responsible for NEC development, though this finding has not been seen consistently. We present a case of large-cell neuroendocrine carcinoma of the sigmoid colon in a 65-year-old woman with long-standing ulcerative colitis...
August 7, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28782508/circulating-and-tissue-resident-cd4-t-cells-with-reactivity-to-intestinal-microbiota-are-abundant-in-healthy-individuals-and-function-is-altered-during-inflammation
#16
Ahmed N Hegazy, Nathaniel R West, Michael J T Stubbington, Emily Wendt, Kim I M Suijker, Angeliki Datsi, Sebastien This, Camille Danne, Suzanne Campion, Sylvia H Duncan, Benjamin M J Owens, Holm H Uhlig, Andrew McMichael, Andreas Bergthaler, Sarah A Teichmann, Satish Keshav, Fiona Powrie
BACKGROUND & AIMS: Interactions between commensal microbes and the immune system are tightly regulated and maintain intestinal homeostasis, but little is known about these interactions in humans. We investigated responses of human CD4(+) T cells to the intestinal microbiota. We measured the abundance of T cells in circulation and intestinal tissues that respond to intestinal microbes and determined their clonal diversity. We also assessed their functional phenotypes and effects on intestinal resident cell populations, and studied alterations in microbe-reactive T cells in patients with chronic intestinal inflammation...
August 3, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28776072/tof-sims-and-principal-component-analysis-of-lipids-and-amino-acids-from-inflamed-and-dysplastic-human-colonic-mucosa
#17
Marco Urbini, Valentina Petito, Francesco de Notaristefani, Franco Scaldaferri, Antonio Gasbarrini, Luca Tortora
Here, time of flight secondary ion mass spectrometry (ToF-SIMS) and multivariate analysis were combined to study the role of ulcerative colitis (UC), a type of inflammatory bowel disease (IBD), in the colon cancer progression. ToF-SIMS was used to obtain mass spectra and chemical maps from the mucosal surface of human normal (NC), inflamed (IC), and dysplastic (DC) colon tissues. Chemical mapping with a lateral resolution of ≈ 1 μm allowed to evaluate zonation of fatty acids and amino acids as well as the morphological condition of the intestinal glands...
August 3, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28774871/enteric-serotonin-and-oxytocin-endogenous-regulation-of-severity-in-a-murine-model-of-necrotizing-enterocolitis
#18
Kara Gross Margolis, Jennifer Vittorio, Maria Talavera, Karen Gluck, Zhishan Li, Alina Iuga, Korey Stevanovic, Virginia Saurman, Narek Israelyan, Martha G Welch, Michael D Gershon
Necrotizing enterocolitis (NEC), a gastrointestinal inflammatory disease of unknown etiology, causes a great deal of morbidity and mortality in premature infants. The liver as well as the gut may be affected in NEC. We tested the hypothesis that signaling molecules, which are endogenous to the bowel, regulate the severity of experimental NEC in mice. Specifically, we postulated that mucosal serotonin (5-HT), which is proinflammatory, would increase the severity of NEC and that oxytocin (OT), which is present in enteric neurons and is anti-inflammatory, would oppose NEC...
August 3, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28774831/acoustic-stress-induces-long-term-severe-intestinal-inflammation-in-the-mouse
#19
Silvia Miranda, María Estela Roux
The influence of noise on the presentation and progression of inflammatory bowel diseases has been poorly analyzed. We designed this study to investigate immediate and late effects of acoustic stress (AS) on small intestine. To this aim, CBA/J, BALB/c and DBA/2 mice were divided into AS and control groups. AS mice were exposed to noise (300Hz-70dB) during 24hs and randomized into: A) Acute effects group: mice were killed after AS; L) Late effects group: mice were killed 3 weeks after AS and O) Over-exposed effects group: mice were submitted to AS once a week during a month and killed...
July 31, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28770665/immunopathophysiology-of-inflammatory-bowel-disease-how-genetics-link-barrier-dysfunction-and-innate-immunity-to-inflammation
#20
Minesh Mehta, Shifat Ahmed, Gerald Dryden
Inflammatory bowel diseases (IBD) comprise a distinct set of clinical symptoms resulting from chronic or relapsing immune activation and corresponding inflammation within the gastrointestinal (GI) tract. Diverse genetic mutations, encoding important aspects of innate immunity and mucosal homeostasis, combine with environmental triggers to create inappropriate, sustained inflammatory responses. Recently, significant advances have been made in understanding the interplay of the intestinal epithelium, mucosal immune system, and commensal bacteria as a foundation of the pathogenesis of inflammatory bowel disease...
August 2017: Innate Immunity
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