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https://www.readbyqxmd.com/read/30329049/identification-of-new-potential-therapies-for-colitis-amelioration-using-an-appendicitis-appendectomy-model
#1
Rajkumar Cheluvappa
The appendix contains copious lymphoid tissue and is constantly exposed to gut flora. Appendicitis followed by appendectomy (AA), when done at a young age, prevents or significantly ameliorates inflammatory bowel diseases (IBDs) in later life. Inflammatory bowel disease comprises Crohn's disease and ulcerative colitis. Our unique murine AA model is the only existing experimental model of AA. Herein, the appendiceal pathology closely resembles the pathological features of human appendicitis. Our AA model protects against experimental colitis in an age-, bacteria- and antigen-dependent manner...
October 16, 2018: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/30216448/lactobacillus-reuteri-f-9-35-prevents-dss-induced-colitis-by-inhibiting-proinflammatory-gene-expression-and-restoring-the-gut-microbiota-in-mice
#2
Mao-Cheng Sun, Fu-Cheng Zhang, Xue Yin, Bi-Jun Cheng, Chang-Hui Zhao, Yan-Ling Wang, Zheng-Zhe Zhang, Hong-Wei Hao, Tie-Hua Zhang, Hai-Qing Ye
Probiotics are considered to be a potential treatment for ulcerative colitis (UC). The aim of this study was to compare the preventive effect of a space flight-induced mutant L. reuteri F-9-35 and its wild type on UC in vivo. Female mice were randomly assigned to five groups: one normal and four colitic. Mice from colitis groups were daily gavaged with 0.2 mL 12% (w/v) skim milk containing the mutant or wild type (1 × 1011 CFU/mL), skim milk alone or distilled water for the whole experiment period, starting 7 days before colitis induction...
October 2018: Journal of Food Science
https://www.readbyqxmd.com/read/29959727/dysregulated-up-frameshift-protein-1-promotes-ulcerative-colitis-pathogenesis-through-the-tnfr1-nf-%C3%AE%C2%BAb-mapks-pathway
#3
Huatuo Zhu, Shujun Huang, Min Yue, Wenguo Chen, Chao Lu, Xinhe Lou, Chunxiao Li, Guodong Shan, Hongtan Chen, Xiaowei Xu, Guoqiang Xu, Lihua Chen
BACKGROUND: Ulcerative colitis (UC) is an idiopathic colonic mucosal disease, and its pathogenesis has not been fully understood. Up-frameshift protein 1 (UPF1) is a potential molecule for UC predicted by a computational approach. AIM: The present study aimed to validate the underlying mechanism of UPF1 in UC. METHODS: UPF1 expression was detected by qRT-PCR, western blotting, and immunohistochemistry in dextran sulfate sodium-induced colitis in mice...
October 2018: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29668968/outcomes-of-endoscopic-resections-of-large-laterally-spreading-colorectal-lesions-in-inflammatory-bowel-disease-a-single-united-kingdom-center-experience
#4
Shraddha Gulati, Andrew Emmanuel, Margaret Burt, Patrick Dubois, Bu'Hussain Hayee, Amyn Haji
Background: The SCENIC consensus statement recommends endoscopic resection of all visible dysplasia in inflammatory bowel disease, but patients with large or complex lesions may still be advised to have colectomy. This article presents outcomes for large nonpolypoid resections associated with colitis at our institution. Methods: Data including demographics, clinical history, lesion characteristics, method of resection, and postresection surveillance were collected prospectively in patients with visible lesions within colitic mucosa from January 2011 to November 2016...
May 18, 2018: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/29572553/galantamine-anti-colitic-effect-role-of-alpha-7-nicotinic-acetylcholine-receptor-in-modulating-jak-stat3-nf-%C3%AE%C2%BAb-hmgb1-rage-and-p-akt-bcl-2-pathways
#5
Shakeeb A Wazea, Walaa Wadie, Ashraf K Bahgat, Hanan S El-Abhar
Vagal stimulation controls systemic inflammation and modulates the immune response in different inflammatory conditions, including inflammatory bowel diseases (IBD). The released acetylcholine binds to alpha-7 nicotinic acetylcholine receptor (α7 nAChR) to suppress pro-inflammatory cytokines. This provides a new range of potential therapeutic approaches for controlling inflammatory responses. The present study aimed to assess whether galantamine (Galan) anti-inflammatory action involves α7 nAChR in a 2,4,6-trinitrobenzene sulfonic acid (TNBS) model of colitis and to estimate its possible molecular pathways...
March 23, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29572384/cardiotrophin-1-attenuates-experimental-colitis-in-mice
#6
Vanessa Prieto-Vicente, Ana I Sánchez-Garrido, Víctor Blanco-Gozalo, Miguel Arévalo, Enrique García-Sánchez, Daniel López-Montañés, Yaremi Quiros, Francisco J López-Hernández, Antonio Rodríguez-Pérez, José M López-Novoa
Cardiotrophin-1 (CT-1) holds potent anti-inflammatory, cytoprotective, and anti-apoptotic effects in the liver, kidneys, and heart. In the present study, the role of endogenous CT-1 and the effect of exogenous CT-1 were evaluated in experimental ulcerative colitis. Colitis was induced in CT-1 knockout and wild-type (WT) mice by administration of dextran sulphate sodium (DSS) in the drinking water during 7 days. CT-1 knockout mice showed higher colon damage and disease severity than WT mice. In addition, CT-1 (200 µg/kg/day, iv) or vehicle (as control) was administered during 3 days to WT, colitic mice, starting on day 4 after initiation of DSS...
May 23, 2018: Clinical Science (1979-)
https://www.readbyqxmd.com/read/29554971/oral-escherichia-coli-expressing-il-35-meliorates-experimental-colitis-in-mice
#7
Baoren Zhang, Yi Liu, Xu Lan, Xiaoxi Xu, Xiaoning Zhang, Xiang Li, Yiming Zhao, Guang Li, Caigan Du, Shanzheng Lu, Hao Wang
BACKGROUND: Ulcerative colitis (UC) is a type of inflammatory bowel disease (IBD) characterized by chronic inflammation of colon. It is commonly believed that the imbalance of immune system and overwhelming production of cytokines are involved in the pathogenesis of UC. Recent studies demonstrated that interleukin-35 (IL-35), a key player in the regulation of inflammation, has been identified as potential therapeutic target to treat UC. However, conventional intravenous administration is costly and inconvenient...
March 20, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29511562/prevalence-and-risk-factors-for-colorectal-adenomas-in-patients-with-ulcerative-colitis
#8
Jordi Gordillo, Yamile Zabana, Esther Garcia-Planella, Míriam Mañosa, Jordina Llaó, Ignasi Gich, Laura Marín, Justyna Szafranska, Sergio Sáinz, Xavier Bessa, Eduard Cabré, Eugeni Domènech
Background: Patients with ulcerative colitis (UC) have an increased risk of colorectal cancer. Scarce data regarding the development of adenomas in these patients are available both for normal and colitic mucosa. Objective: The objective of this article is to evaluate the prevalence of adenomatous polyps and associated risk factors in patients with UC. Methods: Patients with UC were identified from the databases of two tertiary referral centers...
March 2018: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/29394669/-a-case-of-local-recurrence-with-negative-fdg-pet-findings-after-a-total-proctocolectomy-for-ulcerative-colitis-associated-with-colon-cancer-with-retroperitoneal-penetration
#9
Masumi Kumakura, Toshiro Ogura, Yu Muta, Tetsuya Ito, Azusa Yamamoto, Kunihiko Amano, Toru Ishiguro, Minoru Fukuchi, Erito Mochiki, Hideyuki Ishida
We report the case of a 55-year-old man who successfully underwent resection of a recurrence of ulcerative colitis(UC)- associated colon cancer located in the pancreatic body and left kidney. The patient had undergone an emergency laparotomy (total proctocolectomy with stapled ileal-pouch anal anastomosis)for the treatment of a descending colon cancer with retroperitoneal penetration associated with UC at the age of 50 years. At that time, histological examinations revealed a mucinous carcinoma that was classified as Stage II colon cancer...
November 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/29361089/differential-susceptibility-to-t-cell-induced-colitis-in-mice-role-of-the-intestinal-microbiota
#10
Cynthia Reinoso Webb, Hendrik den Bakker, Iurii Koboziev, Yava Jones-Hall, Kameswara Rao Kottapalli, Dmitry Ostanin, Kathryn L Furr, Qinghui Mu, Xin M Luo, Matthew B Grisham
One of the best characterized mouse models of the inflammatory bowel diseases (IBD; Crohn's disease, ulcerative colitis) is the CD4+CD45RBhigh T cell transfer model of chronic colitis. Following our relocation to Texas Tech University Health Sciences Center (TTUHSC), we observed a dramatic reduction in the incidence of moderate-to-severe colitis from a 16-year historical average of 90% at Louisiana State University Health Sciences Center (LSUHSC) to <30% at TTUHSC. We hypothesized that differences in the commensal microbiota at the 2 institutions may account for the differences in susceptibility to T cell-induced colitis...
January 18, 2018: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/29114386/suppression-of-inflammation-and-tissue-damage-by-a-hookworm-recombinant-protein-in-experimental-colitis
#11
Ivana B Ferreira, Darren A Pickering, Sally Troy, John Croese, Alex Loukas, Severine Navarro
Gastrointestinal parasites, hookworms in particular, have evolved to cause minimal harm to their hosts when present in small numbers, allowing them to establish chronic infections for decades. They do so by creating an immunoregulatory environment that promotes their own survival, but paradoxically also benefits the host by protecting against the onset of many inflammatory diseases. To harness the therapeutic value of hookworms without using live parasites, we have examined the protective properties of the recombinant protein anti-inflammatory protein (AIP)-1, secreted in abundance by hookworms within the intestinal mucosa, in experimental colitis...
October 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/29084077/accumulation-of-hla-dr4-in-colonic-epithelial-cells-causes-severe-colitis-in-homozygous-hla-dr4-transgenic-mice
#12
Atsushi Irie, Takahisa Imamura, Yayoi Michibata, Ttatsuko Kubo, Naoki Takeda, Isao Shibuya, Shinji Sogo, Kimi Araki, Yasuharu Nishimura
BACKGROUND: Homozygous HLA-DR4/I-E transgenic mice (tgm) spontaneously developed colitis similar to human ulcerative colitis. We explored whether endoplasmic reticulum stress in colonic epithelial cells due to overexpression of HLA-DR4/I-E was involved in the pathogenesis of colitis. METHODS: Major histocompatibility complex class II transactivator-knockout (CIITAKO) background tgm were established to test the involvement of HLA-DR4/I-E expression in the pathogenesis of colitis...
December 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28871001/colitic-cancer-develops-through-mutational-alteration-distinct-from-that-in-sporadic-colorectal-cancer-a-comparative-analysis-of-mutational-rates-at-each-step
#13
COMPARATIVE STUDY
Toshiaki Tanaka, Takashi Kobunai, Yoko Yamamoto, Shigenobu Emoto, Koji Murono, Manabu Kaneko, Kazuhito Sasaki, Kensuke Otani, Takeshi Nishikawa, Kazushige Kawai, Keisuke Hata, Hiroaki Nozawa, Toshiaki Watanabe
BACKGROUND: Patients with ulcerative colitis (UC) are at risk of UC-associated colorectal cancer (CRC); however, little is known about genetic alterations occurring during UC carcinogenesis. We examined mutational changes in patients with colitic cancer and the features that differed between the carcinogenesis of UC and sporadic CRC. MATERIAL AND METHODS: Specimens were obtained from the non-neoplastic mucosa and cancer cells of 12 patients with colitic cancer. The mutational rate of oncogenes in colitic cancer was analyzed and compared to that of oncogenes in sporadic CRC...
September 2017: Cancer Genomics & Proteomics
https://www.readbyqxmd.com/read/28839872/advanced-imaging-in-colonoscopy-contemporary-approach-to-dysplasia-surveillance-in-inflammatory-bowel-disease
#14
Iosif Beintaris, Matt Rutter
Inflammatory bowel disease (IBD) (ulcerative colitis (UC) and Crohn's disease (CD)) is a chronic relapsing/remitting condition characterised by intestinal inflammation. One of the main concerns in patients with longstanding ulcerative and Crohn's colitis is development of colonic dysplasia and colorectal cancer (CRC), a risk higher than that of the general population. Colonoscopy surveillance programmes have been developed by major societies worldwide to improve early dysplasia detection and treatment, thus preventing progression to colorectal cancer...
October 2016: Frontline Gastroenterology
https://www.readbyqxmd.com/read/28811707/myo-inositol-reduces-%C3%AE-catenin-activation-in-colitis
#15
Emily M Bradford, Corey A Thompson, Tatiana Goretsky, Guang-Yu Yang, Luz M Rodriguez, Linheng Li, Terrence A Barrett
AIM: To assess dietary myo-inositol in reducing stem cell activation in colitis, and validate pβ-cateninS552 as a biomarker of recurrent dysplasia. METHODS: We examined the effects of dietary myo-inositol treatment on inflammation, pβ-cateninS552 and pAkt levels by histology and western blot in IL-10-/- and dextran sodium sulfate-treated colitic mice. Additionally, we assessed nuclear pβ-cateninS552 in patients treated with myo-inositol in a clinical trial, and in patients with and without a history of colitis-induced dysplasia...
July 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28762585/therapeutic-effects-of-6-gingerol-8-gingerol-and-10-gingerol-on-dextran-sulfate-sodium-induced-acute-ulcerative-colitis-in-rats
#16
Feng Zhang, Na Ma, Yong-Feng Gao, Li-Li Sun, Ji-Guo Zhang
Ulcerative colitis is one of the most common types of inflammatory bowel disease and is multifactorial and relapsing. 6-Gingerol, a component of gingerols extracted from ginger (Zingiber officinale), has been reported to improve ulcerative colitis. The present study aims to investigate the therapeutic efficacy of two analogous forms of 6-gingerol, 8-gingerol, and 10-gingerol, on ulcerative colitis. Colitis was induced in rats through consumption of 5% (w/v) dextran sulfate sodium drinking water for 7 consecutive days...
September 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28726958/wasabia-japonica-is-a-potential-functional-food-to-prevent-colitis-via-inhibiting-the-nf-%C3%AE%C2%BAb-signaling-pathway
#17
Ju-Hee Kang, Seungho Choi, Jeong-Eun Jang, Prakash Ramalingam, Young Tag Ko, Sun Yeou Kim, Seung Hyun Oh
Inflammatory bowel diseases (IBDs), including Crohn's disease (CD) and ulcerative colitis (UC), are prevalent and debilitating health problems worldwide. Many types of drugs are used to treat IBDs, but they exhibit adverse effects such as vomiting, nausea, abdominal pain, diarrhea, etc. In order to overcome the limitations of current therapeutic drugs, scientists have searched for functional foods from natural resources. In this study, we investigated the anti-colitic effects of Wasabia japonica extract in a DSS-induced colitis model...
August 1, 2017: Food & Function
https://www.readbyqxmd.com/read/28724693/new-peptide-inhibitor-of-dipeptidyl-peptidase-iv-emdb-1-extends-the-half-life-of-glp-2-and-attenuates-colitis-in-mice-after-topical-administration
#18
Maciej Salaga, Anna Mokrowiecka, Marta Zielinska, Ewa Malecka-Panas, Radzislaw Kordek, Elzbieta Kamysz, Jakub Fichna
Protease inhibition has become a possible new approach in inflammatory bowel disease (IBD) therapy. A serine exopeptidase, dipeptidyl peptidase IV (DPP IV), is responsible for the inactivation of incretin hormone, glucagon-like peptide 2 (GLP-2), a potent stimulator of intestinal epithelium regeneration and growth. Recently, we showed that the novel peptide analog of endomorphin-2, Tyr-Pro-D-ClPhe-Phe-NH2 (EMDB-1) is a potent blocker of DPP IV and has an inhibitory effect on gastrointestinal (GI) smooth muscle contractility...
October 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28694804/cd169-expressing-macrophage-a-key-subset-in-mesenteric-lymph-nodes-promotes-mucosal-inflammation-in-dextran-sulfate-sodium-induced-colitis
#19
Qiuting Li, Dan Wang, Shengyu Hao, Xiaolei Han, Yuan Xia, Xiangzhi Li, Yaoxing Chen, Masato Tanaka, Chun-Hong Qiu
Inflammatory bowel disease (IBD) including Crohn's disease (CD) and ulcerative colitis is a relapsing-remitting illness. Patients with long-standing extensive colitis are easy to develop colorectal cancer (CRC). The increasing incidence of IBD and a substantial increase in the risk of CRC make the necessity to pay more attention on the regulation of inflammation especially by specific macrophages subset. The present study reported that a key subset of sinus macrophage expressing CD169 in mesenteric lymph nodes (mLNs) played an essential role in promoting mucosal inflammation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28621756/p53-expression-as-a-diagnostic-biomarker-in-ulcerative-colitis-associated-cancer
#20
REVIEW
Kazuhiro Kobayashi, Hiroyuki Tomita, Masahito Shimizu, Takuji Tanaka, Natsuko Suzui, Tatsuhiko Miyazaki, Akira Hara
Ulcerative colitis (UC) is defined as an idiopathic inflammatory disorder primarily involving the mucosa and submucosa of the colon. UC-associated colon cancers (also known as colitic cancers) develop through the inflammation-dysplasia sequence, which is a major problem affecting the prognosis of patients with UC. It is therefore very important to detect malignancy from UC at an early stage. As precancerous lesions arising in UC, there are pathological adenomatous changes, basal cell changes, in situ anaplasia, clear cell changes, and pan-cellular change...
June 16, 2017: International Journal of Molecular Sciences
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