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Ulcerative colitis tnf

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https://www.readbyqxmd.com/read/29350564/role-of-madcam-1-expressing-high-endothelial-venule-like-vessels-in-colitis-induced-in-mice-lacking-sulfotransferases-catalyzing-l-selectin-ligand-biosynthesis
#1
Shulin Low, Jotaro Hirakawa, Hitomi Hoshino, Kenji Uchimura, Hiroto Kawashima, Motohiro Kobayashi
Ulcerative colitis (UC) is a chronic inflammatory disease histologically characterized by diffuse mononuclear cell infiltrates in colonic mucosa. These inflammatory cells are considered to be recruited via high endothelial venule (HEV)-like vessels displaying mucosal addressin cell adhesion molecule 1 (MAdCAM-1), the ligand for α4β7 integrin, and/or peripheral lymph node addressin (PNAd), an L-selectin ligand. 6- O-sulfation of N-acetylglucosamine in the carbohydrate moiety of PNAd is catalyzed exclusively by N-acetylglucosamine-6- O-sulfotransferase 1 (GlcNAc6ST-1) and GlcNAc6ST-2...
January 1, 2018: Journal of Histochemistry and Cytochemistry: Official Journal of the Histochemistry Society
https://www.readbyqxmd.com/read/29350052/protective-mechanisms-of-6-gingerol-in-dextran-sulfate-sodium-induced-chronic-ulcerative-colitis-in-mice
#2
B O Ajayi, I A Adedara, E O Farombi
Ulcerative colitis (UC) is a relapsing and remitting inflammatory disease of the colon, with an increasing incidence worldwide. 6-Gingerol (6G) is a bioactive constituent of Zingiber officinale, which has been reported to possess various biological activities. This study was designed to evaluate the role of 6G in chronic UC. Chronic UC was induced in mice by three cycles of 2.5% dextran sulfate sodium (DSS) in drinking water. Each cycle consisted of 7 days of 2.5% DSS followed by 14 days of normal drinking water...
January 1, 2018: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/29336432/increased-mortality-rates-with-prolonged-corticosteroid-therapy-when-compared-with-antitumor-necrosis-factor-%C3%AE-directed-therapy-for-inflammatory-bowel-disease
#3
James D Lewis, Frank I Scott, Colleen M Brensinger, Jason A Roy, Mark T Osterman, Ronac Mamtani, Meenakshi Bewtra, Lang Chen, Huifeng Yun, Fenglong Xie, Jeffrey R Curtis
OBJECTIVES: Crohn's disease (CD) and ulcerative colitis (UC) are inflammatory bowel diseases (IBD) that compromise quality of life and may increase mortality. This study compared the mortality risk with prolonged corticosteroid use vs. antitumor necrosis factor-α (anti-TNF) drugs in IBD. METHODS: A retrospective cohort study was conducted among Medicaid and Medicare beneficiaries from 2001 to 2013 with IBD prescribed either >3,000 mg of prednisone or equivalent within a 12-month period or new initiation of anti-TNF therapy, each treated as time-updating exposures...
January 16, 2018: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/29333082/a-fcgr3a-polymorphism-predicts-anti-drug-antibodies-in-chronic-inflammatory-bowel-disease-patients-treated-with-anti-tnf
#4
Patricia Romero-Cara, Daniel Torres-Moreno, José Pedregosa, Juan Antonio Vílchez, María Sergia García-Simón, Guadalupe Ruiz-Merino, Senador Morán-Sanchez, Pablo Conesa-Zamora
BACKGROUND: The production of anti-drug antibodies (ADAs) against IgG monoclonal antibodies (mAbs) targeting tumour necrosis factor (TNF) is an important cause of loss of response to anti-TNF mAbs in patients with inflammatory bowel diseases (IBD) such as Crohn's disease (CD) and ulcerative colitis (UC). Since receptors for the Fc portion of IgG (FCGRs) are involved in the degradation of IgG complexes, we hypothesised that a polymorphism in FCGR3A (V158F; rs396991) gene could be involved in anti-TNF ADA generation and treatment resistance...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29331766/roflumilast-type-4-phosphodiesterase-inhibitor-attenuates-inflammation-in-rats-with-ulcerative-colitis-via-down-regulation-of-inos-and-elevation-of-camp
#5
Nahla E El-Ashmawy, Naglaa F Khedr, Hoda A El-Bahrawy, Samar A El-Adawy
BACKGROUND: Roflumilast (Rof), a phosphodiesterase 4 (PDE4) inhibitor, has been shown to be an effective agent in inflammatory diseases and marketed for chronic obstructive pulmonary disease. OBJECTIVE: This study was conducted to examine the potential anti-inflammatory effects of Rof in dextran sulphate sodium (DSS)-induced ulcerative colitis (UC) in rats and to investigate the molecular mechanisms underlying these effects. METHODS: Forty male Wistar rats were divided into four groups: normal control, colitis group (rats received 5% DSS in their drinking water continuously for 7 days), Rof group, and sulfasalazine (SLZ) group...
January 10, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29324259/higher-serum-vitamin-d-levels-are-associated-with-protective-serum-cytokine-profiles-in-patients-with-ulcerative-colitis
#6
John Gubatan, Shuji Mitsuhashi, Maria Serena Longhi, Talia Zenlea, Laura Rosenberg, Simon Robson, Alan C Moss
BACKGROUND & AIMS: Vitamin D has immune modulating effects on cytokines. Serum vitamin D levels are associated with the risk of relapse in patients with ulcerative colitis (UC), through unknown mechanisms. We tested the hypothesis that this beneficial role of vitamin D on UC is mediated through anti-inflammatory serum cytokine profiles. METHODS: Serum samples from a prospective cohort of seventy UC patients in clinical remission were collected and baseline histological and endoscopic scores were recorded at enrollment...
January 8, 2018: Cytokine
https://www.readbyqxmd.com/read/29317577/-therapeutic-effect-of-anti-cxcl1-neutralizing-antibody-on-%C3%A2-acute-ulcerative-colitis-in-mice
#7
Linglong Luo, Xuemei Zhang, Jing Wang, Xiayu Li, Jian Ma, Shourong Shen
To evaluate the therapeutic effect of CXCL1 monoclonal antibody on dextra sulfate sodium (DSS)-induced acute ulcerative colitis (UC) in mice, and to elucidate its effect on the expressions of TNF-α, IFN-γ, IL-17 and IL-10 as well as neutrophil infiltration.
 Methods: Female BALB/c mice were randomly divided into a normal group (DSS-), a disease group (DSS+saline), an anti-CXCL1 antibody group (DSS+anti-CXCL1 Ab) and a treatment control group (DSS+IgG Ab). The DSS+saline, DSS+anti-CXCL1 Ab and DSS+anti-CXCL1 Ab groups were given 3...
December 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/29309905/overall-and-comparative-risk-of-herpes-zoster-with-pharmacotherapy-for-inflammatory-bowel-diseases-a-nationwide-cohort-study
#8
Nabeel Khan, Dhruvan Patel, Chinmay Trivedi, Yash Shah, Gary Lichtenstein, James Lewis, Yu-Xiao Yang
BACKGROUND & AIMS: Patients with inflammatory bowel disease (IBD) might be at increased risk for herpes zoster infection. We sought to quantify the risk of herpes zoster in patients with IBD and evaluate the effects of IBD and IBD medications on the risk of herpes zoster. METHODS: We conducted 2 retrospective studies of populations of Veterans, from January 2000 through June 2016. In study 1, we compared the incidence of herpes zoster among patients with IBD receiving 5-ASA alone vs matched patients without IBD...
January 5, 2018: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29305860/rvd1-inhibits-tnf%C3%AE-induced-c-myc-expression-in-normal-intestinal-epithelial-cells-and-destabilizes-hyper-expressed-c-myc-in-colon-cancer-cells
#9
Xiancai Zhong, Ha-Na Lee, Young-Joon Surh
Inflammatory bowel diseases, including ulcerative colitis and Crohn's disease, are persistent disorders that lead to development of colitis-associated cancer (CAC). Seeking the resolution of colitis has been addressed as a new therapeutic strategy to CAC. Resolvin D1 (RvD1) is an endogenous lipid mediator that is generated from docosahexaenoic acid during the resolution of inflammation. Although the pro-resolving effects of RvDs have been extensively investigated and well defined, the role for RvD1 in CAC remains largely unknown...
January 3, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29296188/alterations-in-the-mucosa-associated-fungal-microbiota-in-patients-with-ulcerative-colitis
#10
Xinyun Qiu, Jingjing Ma, Chunhua Jiao, Xiaqiong Mao, Xiaojing Zhao, Meijiao Lu, Kai Wang, Hongjie Zhang
Background: Fungi colonize the human gut and might play a key role in the pathogenesis of ulcerative colitis (UC). However, studies on the fungal composition in the gut (especially adhering to the intestinal mucosa) of UC patients is limited. Results: The number of fungi decreased significantly in inflamed mucosa compared with that in HS mucosa. Fifteen major genera were examined, among which Wickerhamomyces, unidentified genus of Saccharomycetales, Aspergillus, Sterigmatomyces, and Candida showed increasing trends, whereas Exophiala, Alternaria, Emericella, Epicoccum, Acremonium, Trametes, and Penicillium showed decreasing trends in UC patients compared to the HS...
December 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/29286110/tumor-necrosis-factor-%C3%AE-acts-reciprocally-with-solute-carrier-family-26-member-3-downregulated-in-adenoma-and-reduces-its-expression-leading-to-intestinal-inflammation
#11
Xiangming Ding, Dongxiao Li, Mengke Li, Dean Tian, Hongbing Yu, Qin Yu
Solute carrier family 26, member 3 (Slc26a3), also termed downregulated-in-adenoma (DRA) is a member of the Slc26 family of anion transporters and is mutated in congenital chloride diarrhea. Our previous study demonstrated that DRA deficiency is associated with severely reduced colonic HCO3‑ secretion, a loss of colonic fluid absorption, a lack of a firmly adherent mucus layer and a severely reduced colonic mucosal resistance to dextran sodium sulfate (DSS) damage. However, the direct effect of mediators that trigger intestinal inflammatory factors on DRA has not been fully investigated...
December 22, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29278445/the-effect-of-7-hydroxycoumarin-on-dextran-sulfate-sodium-induced-ulcerative-colitis
#12
Chengzheng Wang, Jing Liu, Yingchun Zhou, Gao Feng
7-Hydroxycoumarin (HC) or Umbelliferone exerts many beneficial effects, ie. antioxidant, anti-tumour, anti-inflammatory and immunomodulatory activities. We hypothesized that HC had mitigating properties on ulcerative colitis (UC) induced by dextran sulfate sodium (DSS) in mice, via suppression of inflammation. The induction of UC in mice was achieved by the administration of 3.5% DSS in drinking water for 7 consecutive days. Administration of HC to DSS-induced mice ameliorated the loss of body weight, reduced diarrhoea and gross bleeding and showed a significant reduction in the disease activity index (DAI)...
December 26, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29259703/prostaglandin-e2-ep2-signaling-as-a-node-of-chronic-inflammation-in-the-colon-tumor-microenvironment
#13
REVIEW
Tomohiro Aoki, Shuh Narumiya
Background: Colorectal cancer is the third most common cancer. Involvement of prostaglandin (PG) system in the pathogenesis of colorectal cancer has been suggested from clinical studies demonstrating therapeutic effect of NSAIDs including aspirin or selective COX-2 inhibitors. However, mechanisms on how PG regulates inflammatory responses leading to colorectal cancer development remain obscure. Further, careful attention is needed to use these drugs for a long time because of adverse effects due to non-specific inhibition of physiological PG production in addition to pathological one, making the development of alternatives to aspirin important...
2017: Inflammation and Regeneration
https://www.readbyqxmd.com/read/29259376/albumin-as-a-prognostic-marker-for-ulcerative-colitis
#14
Nabeel Khan, Dhruvan Patel, Yash Shah, Chinmay Trivedi, Yu-Xiao Yang
AIM: To evaluate the role of albumin at the time of ulcerative colitis (UC) diagnosis in predicting the clinical course of disease. METHODS: Nationwide cohort of patients with newly diagnosed UC in the Veterans Affairs health care system was identified and divided into two categories: hypoalbuminemia (i.e., ≤ 3.5 gm/dL) or normal albumin levels (i.e., > 3.5 gm/dL) at the time of UC diagnosis. The exposure of interest was presence of hypoalbuminemia defined as albumin level ≤ 3...
December 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29228739/regulatory-role-of-nkg2d-nk-cells-in-intestinal-lamina-propria-by-secreting-double-edged-th1-cytokines-in-ulcerative-colitis
#15
Fan Wang, Pai-Lan Peng, Xue Lin, Ying Chang, Jing Liu, Rui Zhou, Jia-Yan Nie, Wei-Guo Dong, Qiu Zhao, Jin Li
The role of intestinal lamina propria (LP) NKG2D+ NK cells is unclear in regulating Th1/Th2 balance in ulcerative colitis (UC). In this study, we investigated the frequency of LP NKG2D+ NK cells in DSS-induced colitis model and intestinal mucosal samples of UC patients, as well as the secretion of Th1/Th2/Th17 cytokines in NK cell lines after MICA stimulation. The role of Th1 cytokines in UC was validated by bioinformatics analysis. We found that DSS-induced colitis in mice was characterized by a Th2-mediated process...
November 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29226154/reduced-transferrin-levels-in-active-inflammatory-bowel-disease
#16
Malgorzata Matusiewicz, Katarzyna Neubauer, Paulina Lewandowska, Andrzej Gamian, Malgorzata Krzystek-Korpacka
Inflammatory bowel disease (IBD) is an inflammatory disease of unclear etiopathogenesis and challenging diagnosis, frequently complicated by anemia and malnutrition. C-reactive protein (CRP) remains the only biochemical marker of clinical relevance. The aim of this study was to test hypothesis that transferrin, coinfluenced by inflammation, malnutrition, anemia, and oxidative stress, may better reflect global IBD patient's condition than any other more specific index. Transferrin and other indices of inflammation, anemia, malnutrition, and oxidative stress were measured in 137 IBD patients (Crohn's disease (CD): n = 63 and ulcerative colitis (UC): n = 74) and 97 controls...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29226079/alteration-of-glucocorticoid-receptors-and-exacerbation-of-inflammation-during-lytic-cytomegalovirus-infection-in-thp-1-cells
#17
Shujun Wang, Yaling Dou, Hong Yang, Anping Ni, Rui Zhang, Jiaming Qian
Cytomegalovirus (CMV) infection is associated with glucocorticoid resistance in ulcerative colitis (UC) and may exacerbate the disease course. However, the underlying pathogenicity remains unclear. The aim of this study was to explore possible underlying mechanisms during CMV latency and lytic infection in the human mononuclear cell line THP-1. Latent and activated CMV infection cell models were established. We performed real-time PCR and western blotting to examine changes in glucocorticoid receptors (GRs) during CMV latency and activation...
December 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/29223139/novel-treatments-for-inflammatory-bowel-disease
#18
Hyo Sun Lee, Soo-Kyung Park, Dong Il Park
Increased understanding of the immunopathology of inflammatory bowel disease (IBD) has led to the development of targeted therapies and has unlocked a new era in IBD treatment. The development of treatment options aimed at a variety of pathological mechanisms offers new hope for customized therapies. Beyond anti-tumor necrosis factor agents, selective lymphocyte trafficking inhibitors have been proposed as potent drugs for IBD. Among these, vedolizumab has recently been approved for both Crohn's disease and ulcerative colitis...
December 11, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/29221725/protective-effects-of-polyphenol-rich-infusions-from-carob-ceratonia-siliqua-leaves-and-cladodes-of-opuntia-ficus-indica-against-inflammation-associated-with-diet-induced-obesity-and-dss-induced-colitis-in-swiss-mice
#19
Ikram Aboura, Abdelhafid Nani, Meriem Belarbi, Babar Murtaza, Aurélie Fluckiger, Adélie Dumont, Chahid Benammar, Moufida Saidani Tounsi, François Ghiringhelli, Mickaël Rialland, Naim Akhtar Khan, Aziz Hichami
In the present study, we have investigated the effects of polyphenol-rich infusions from carob leaves and OFI-cladodes on inflammation associated with obesity and dextran sulfate sodium (DSS)-induced ulcerative colitis in Swiss mice. In vitro studies revealed that aqueous extracts of carob leaves and OFI-cladodes exhibited anti-inflammatory properties marked by the inhibition of IL-6, TNF-α and nitric oxide (NO) production in lipopolysaccharide (LPS)-stimulated RAW 264.7 cells concomitant with NF-κβ nucleus translocation inhibition...
December 6, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29213024/-a-refractory-case-of-ulcerative-colitis-developed-after-the-cessation-smoking-achieved-clinical-and-endoscopic-remission-after-resuming-smoking
#20
Tetsuro Hamamoto, Masashi Ohtani, Eiji Matsumoto, Tatsuaki Hori, Ichiro Tsuruhara, Kazuo Yashima, Hajime Isomoto
A 42-year-old man, who had stopped smoking almost one year ago, visited our hospital for hematochezia. He was diagnosed as having ulcerative colitis and was prescribed 5-amino salicylic acid and corticosteroids, which led to the remission of his disease. However, the disease relapsed after sufficient continuous corticosteroids administration and persisted despite 5-amino salicylic acid administration and intensive treatment with corticosteroids, immune modulators, leukocyte apheresis, and anti-TNF-α antibodies...
2017: Nihon Shokakibyo Gakkai Zasshi, the Japanese Journal of Gastro-enterology
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