Read by QxMD icon Read

oxazolone colitis

Vanessa Popp, Katharina Gerlach, Stefanie Mott, Agnieszka Turowska, Holger Garn, Raja Atreya, Hans-Anton Lehr, I-Cheng Ho, Harald Renz, Benno Weigmann, Markus F Neurath
BACKGROUND & AIMS: GATA3 is a transcription factor that regulates T-cell production of cytokines. We investigated the role of GATA3 in development of colitis in mice. METHODS: We performed quantitative PCR and immunofluorescence analyses of colon tissues from patients with Crohn's disease (n= 61) or ulcerative colitis (UC, n= 74), or patients without inflammatory bowel diseases (n= 22), to measure levels of GATA3. Colitis was induced by administration of oxazolone or 2,4,6-Trinitrobenzenesulfonic acid (TNBS) to control mice, mice with T-cell specific deletion of GATA3, and mice with deletion of tumor necrosis factor receptor-1 (TNFR1) and TNFR2 (TNFR double knockouts); some mice were given a GATA3-specific DNAzyme (hgd40) or a control DNAzyme via intrarectal administration, or systemic injections of an antibody to TNF prior or during sensitization and challenge phase of colitis induction...
September 14, 2016: Gastroenterology
Tianjing Liu, Yongyan Shi, Jie Du, Xin Ge, Xu Teng, Lu Liu, Enbo Wang, Qun Zhao
Crohn's disease (CD) and ulcerative colitis (UC) have different immunological mechanisms, while both of them are potential targets of vitamin D treatment. In this study, we have tried to address the role of vitamin D in CD and UC using two mouse models. Mice of C57B6L were given vitamin D before the induction of colitis. Our results showed that vitamin D attenuated 2,4,6-trinitrobenzene sulphonic acid (TNBS)-induced colitis but not oxazolone-induced colitis. Vitamin D could preserve the local histology, alleviate inflammation, suppress apoptosis, maintain tight junction function and decrease permeability...
2016: Scientific Reports
Wei Chen, Weixiong Chen, Jinshui Zhu, Niwei Chen, Yunmin Lu
The purpose of the current study was to evaluate the anti-inflammatory activity of tetramethlpyrazine on oxazolone-induced colitis mice. Spleen mononuclear cells (SMC), lamina propria mononuclear cells (LPMC) and peripheral blood mononuclear cells (PBMC) were isolated from oxazolone-induced colitis and normal mice. The colitis cells treated by oxazolone were randomly divided into model, low dose, middle dose and high dose groups treated with 0, 0.5, 1.0 and 2.0 g/L tetramethlpyrazine, respectively. The apoptotic rate of SMC and LPMC in the oxazolone-induced group was lower than that in the normal group...
2016: Iranian Journal of Pharmaceutical Research: IJPR
Pia Palamides, Henrika Jodeleit, Michael Föhlinger, Florian Beigel, Nadja Herbach, Thomas Mueller, Eckhard Wolf, Matthias Siebeck, Roswitha Gropp
Animal models reflective of ulcerative colitis (UC) remain a major challenge, and yet are crucial to understand mechanisms underlying the onset of disease and inflammatory characteristics of relapses and remission. Mouse models in which colitis-like symptoms are induced through challenge with toxins such as oxazolone, dextran sodium sulfate (DSS) or 2,4,6-trinitrobenzenesulfonic acid (TNBS) have been instrumental in understanding the inflammatory processes of UC. However, these neither reflect the heterogeneous symptoms observed in the UC-affected population nor can they be used to test the efficacy of inhibitors developed against human targets where high sequence and structural similarity of the respective ligands is lacking...
September 1, 2016: Disease Models & Mechanisms
Alexander A Chumanevich, Erin E Witalison, Anusha Chaparala, Anastasiya Chumanevich, Prakash Nagarkatti, Mitzi Nagarkatti, Lorne J Hofseth
BACKGROUND: Ulcerative colitis (UC) is a chronic inflammatory bowel disease that is associated with an increased risk of colorectal cancer in 8-10 years after disease onset. Current colitis treatment strategies do not offer a cure for the disease, but only treat the symptoms with limited success and dangerous side-effects. Also, there is no preventive treatment for either UC or colorectal cancer. Quinacrine is an anti-malarial drug with versatile use in the treatment of diseases involving inflammatory response such as rheumatoid arthritis and lupus erythematosus...
July 14, 2016: Oncotarget
Su-Min Lim, Sang-Yun Lee, Jin-Ju Jeong, Hyun Sik Choi, Hwan Bong Chang, Dong-Hyun Kim
In the previous study, the rhizome mixture of Anemarrhena asphodeloides and Coptis chinensis (DW2007), improved TNBS-, oxazolone-, or DSS-induced colitis in mice by regulating macrophage activation. Therefore, to understand the effect of DW2007 on the T cell differentiation involved in the adaptive immunity, we measured its effect on both Th17 and Treg cell differentiation in splenocytes, in the lamina propria of mice with DSS-induced colitis (DIC), and in the spleens of mice with collagen-induced arthritis (CIA)...
June 17, 2016: Biomolecules & Therapeutics
Xuewei Wang, Fugang Fan, Qin Cao
Inflammatory bowel diseases (IBDs) are chronic inflammatory gastrointestinal disorders caused by a dysregulated mucosal immune response and epithelial barrier disruption. Conventional treatment of IBD is currently limited to overcoming patient symptoms and is often associated with severe adverse effects from the drugs used. Modified Pulsatilla decoction has been used previously to treat ulcerative colitis (UC) in clinical practice in China, however, the underlying mechanism in the treatment of UC remains to be elucidated...
August 2016: Molecular Medicine Reports
Benno Weigmann, Markus F Neurath
Murine models of intestinal inflammation have been widely used in biomedical research. Similarities in anatomy and physiology between such murine models and patients with inflammatory bowel diseases may allow a better understanding of the pathogenesis of Crohn's disease and ulcerative colitis. Additionally, models of intestinal inflammation may be used for the analysis of potentially new therapeutic agents. One key class of models consists of chemically induced inflammation models. Within this group, colitis induced by the haptenizing agent oxazolone is an important model that results in induction of acute or chronic inflammation of the large bowel...
2016: Methods in Molecular Biology
Wei Wu, Feng Wang, Xin Gao, Tingting Niu, Xiaojuan Zhu, Xiaojun Yan, Haimin Chen
BACKGROUND: Carrageenan is a traditional ingredient that has been widely used in the food industry. In the present study, we propose a hypothesis that carrageenan is a conditional inflammatory agent. When the intestinal tract is in an "unhealthy" state such as that during bacterial infection or acute inflammation, carrageenan can synergistically enhance the inflammatory response. METHODS: BALB/C mice received κ-carrageenan via intragastric administration prior to the induction of oxazolone colitis...
2016: BMC Gastroenterology
Aleksandr Zherebiatiev, Aleksandr Kamyshnyi
IL-1β and IL-17A are two cytokines with strong proinflammatory activities and are now known to be involved in a number of chronic inflammatory disorders. High-mobility group box 1 (HMGB1) is a nuclear protein regulating the expression of these proinflammatory cytokines. The NLRP3 inflammasome promotes the maturation of the IL-1β and its activation has been shown as a critical mechanism in the pathogenesis of inflammatory bowel disease (IBD). However, underlying mechanisms to modulate their production in IBD are still unclear...
February 2016: Iranian Journal of Allergy, Asthma, and Immunology
Adriana Estrella González-Ramírez, María Eva González-Trujano, Sandra A Orozco-Suárez, Noé Alvarado-Vásquez, Francisco Javier López-Muñoz
Nerol is a natural monoterpene with antinociceptive and anti-inflammatory properties. Its possible beneficial effects in ulcerative colitis and its corresponding mechanism of action have not been determined to date. The aim of this study was to investigate whether nerol prevents the appearance of pathological markers and hyperalgesia in oxazolone-induced colitis, and protects against gastric damage produced by ethanol. The experimental design included groups of oxazolone-treated mice receiving nerol at 10-300 mg/kg, p...
April 5, 2016: European Journal of Pharmacology
Gabriella Leung, Björn Petri, José Luis Reyes, Arthur Wang, Jordan Iannuzzi, Derek M Mckay
The adoptive transfer of alternatively activated macrophages (AAMs) has proven to attenuate inflammation in multiple mouse models of colitis, however the effect of cryopreservation on AAMs, the ability of previously frozen AAMs to block DNBS (Th1) and oxazolone (Th2) colitis, and their migration post-injection remains unknown. Here we have found that while cryopreservation reduced mRNA expression of canonical markers of IL-4-treated macrophages [M(IL-4)], this did not translate to reduced protein or activity and the cells retained their capacity to drive the suppression of colitis...
December 9, 2015: Molecular Medicine
Hong-Qian Chu, Jun Li, Hong-Peng Huang, Wei-Dong Hao, Li-Ping Duan, Xue-Tao Wei
BACKGROUND: Mast cells in the gut play an important role in the innate and adaptive immune responses that are relevant to human inflammatory bowel disease. However, the contribution of mast cells to the development of inflammatory bowel disease is not well understood. This study aimed to determine the role of mast cells in oxazolone-induced colitis and to explore whether the mast cell membrane stabiliser tranilast could ameliorate colonic inflammation. METHODS: Wild-type rats and mast cell-deficient rats were sensitised and challenged with oxazolone, then treated with tranilast after challenge...
February 2016: Digestive and Liver Disease
Michael S Donoviel, Nitai C Hait, Subramaniam Ramachandran, Michael Maceyka, Kazuaki Takabe, Sheldon Milstien, Tamas Oravecz, Sarah Spiegel
Sphingosine 1-phosphate (S1P) is a pleiotropic bioactive sphingolipid metabolite that regulates numerous processes important for immune responses. S1P is made within cells and must be transported out of cells to exert its effects through activation of 5 specific cell surface GPCRs in an autocrine or paracrine fashion. Spinster 2 (Spns2) transports S1P out of cells, and its deletion in mice reduces circulating levels of S1P, alters immune cell trafficking, and induces lymphopenia. Here we examined the effects of Spns2 deletion on adaptive immune responses and in autoimmune disease models...
December 2015: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
Amanda Waddell, Jefferson E Vallance, Preston D Moore, Amy T Hummel, David Wu, Shiva K Shanmukhappa, Lin Fei, M Kay Washington, Phillip Minar, Lori A Coburn, Susumu Nakae, Keith T Wilson, Lee A Denson, Simon P Hogan, Michael J Rosen
BACKGROUND: IL-33, a member of the IL-1 cytokine family that signals through ST2, is upregulated in ulcerative colitis (UC); however, the role of IL-33 in colitis remains unclear. IL-33 augments type 2 immune responses, which have been implicated in UC pathogenesis. We sought to determine the role of IL-33 signaling in oxazolone (OXA) colitis, a type 2 cytokine-mediated murine model of UC. METHODS: Colon mucosal IL-33 expression was compared between pediatric and adult UC and non-IBD patients using immunohistochemistry and real-time PCR...
December 2015: Inflammatory Bowel Diseases
José L Reyes, Arthur Wang, Maria R Fernando, Rabea Graepel, Gabriella Leung, Nico van Rooijen, Mikael Sigvardsson, Derek M McKay
Helminth parasites provoke multicellular immune responses in their hosts that can suppress concomitant disease. The gut lumen-dwelling tapeworm Hymenolepis diminuta, unlike other parasites assessed as helminth therapy, causes no host tissue damage while potently suppressing murine colitis. With the goal of harnessing the immunomodulatory capacity of infection with H. diminuta, we assessed the putative generation of anti-colitic regulatory B cells following H. diminuta infection. Splenic CD19(+) B cells isolated from mice infected 7 [HdBc(7(d))] and 14 d (but not 3 d) previously with H...
January 1, 2015: Journal of Immunology: Official Journal of the American Association of Immunologists
Jin-Ju Jeong, Se-Eun Jang, Supriya R Hyam, Myung Joo Han, Dong-Hyun Kim
In the previous study, the mixture of the rhizome of Anemarrhena asphodeloides (AA, family Liliaceae) and the rhizome of Coptidis chinensis (CC, family Ranunculaceae) (AC-mix) improved TNBS- or oxazolone-induced colitis in mice. Therefore, to investigate its anticolitic mechanism, we measured its effect in acute and chronic DSS-induced colitic mice and investigated its anti-inflammatory mechanism in peritoneal macrophages. AC-mix potently suppressed DSS-induced body weight loss, colon shortening, myeloperoxidase activity, and TNF-α, IL-1β, and IL-6 expressions in acute or chronic DSS-stimulated colitic mice...
2014: Evidence-based Complementary and Alternative Medicine: ECAM
Toshiko Onitake, Yoshitaka Ueno, Shinji Tanaka, Shintaro Sagami, Ryohei Hayashi, Kenta Nagai, Michihiro Hide, Kazuaki Chayama
PURPOSE: Pulverized konjac glucomannan (PKGM) is a natural biologically active compound extracted from konjac, a Japanese traditional food. In the present study, we investigated the role of PKGM in intestinal immunity in a mouse model of oxazolone (OXA)-induced colitis. METHODS: C57BL/6(B6) mice were fed PKGM or control food from 2 weeks before the induction of OXA colitis. Body weight change, colon length, and histological change in the colon were examined. The mononuclear cells were purified from colon and stimulated with PMA/ionomycin...
September 2015: European Journal of Nutrition
Joanne C Masterson, Eóin N McNamee, Sophie A Fillon, Lindsay Hosford, Rachel Harris, Shahan D Fernando, Paul Jedlicka, Ryo Iwamoto, Elizabeth Jacobsen, Cheryl Protheroe, Holger K Eltzschig, Sean P Colgan, Makoto Arita, James J Lee, Glenn T Furuta
OBJECTIVE: Eosinophils reside in the colonic mucosa and increase significantly during disease. Although a number of studies have suggested that eosinophils contribute to the pathogenesis of GI inflammation, the expanding scope of eosinophil-mediated activities indicate that they also regulate local immune responses and modulate tissue inflammation. We sought to define the impact of eosinophils that respond to acute phases of colitis in mice. DESIGN: Acute colitis was induced in mice by administration of dextran sulfate sodium, 2,4,6-trinitrobenzenesulfonic acid or oxazolone to C57BL/6J (control) or eosinophil deficient (PHIL) mice...
August 2015: Gut
Xuewei Wang, Jinghui Yang, Qin Cao, Jianmin Tang
The aim of the present study was to investigate the therapeutic effects of water-soluble extracts of Banxiaxiexin decoction, a classical traditional Chinese medicine formulation, on BALB/c mice with experimentally induced ulcerative colitis (UC). Water-soluble extracts of Banxiaxiexin decoction were intragastrically administered to BALB/c mice with oxazolone (OXA)-induced colitis. Sulfasalazine (SASP) was administered intragastrically to OXA-treated mice to establish the SASP group (positive control). Following drug administration, the disease activity index (DAI) and the histopathological inflammation score were recorded...
October 2014: Experimental and Therapeutic Medicine
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"