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https://www.readbyqxmd.com/read/28437888/protective-effects-of-tranilast-on-experimental-colitis-in-rats
#1
Yoshiki Seto, Kouki Kato, Ryota Tsukada, Hiroki Suzuki, Yuuki Kaneko, Yoshiki Kojo, Hideyuki Sato, Satomi Onoue
The present study aimed to verify the efficacy of tranilast (TL) for treating inflammatory bowel disease (IBD) with the use of an experimental colitis model. The experimental colitis model was prepared by intrarectal instillation of 2,4,6-trinitrobenzenesulfonic acid (TNBS; 40mg/kg) dissolved in water containing 25% ethanol. The pharmacological effects of TL after repeated oral administration were evaluated by biomarker and histological analyses, and the pharmacokinetic behavior of TL was also examined after single oral administration...
April 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28412413/activation-of-muscarinic-receptors-prevents-tnf-%C3%AE-mediated-intestinal-epithelial-barrier-disruption-through-p38-mapk
#2
Junsuke Uwada, Takashi Yazawa, Md Tariqul Islam, Md Rafiqul Islam Khan, Susanne M Krug, Michael Fromm, Shin-Ichiro Karaki, Yuichi Suzuki, Atsukazu Kuwahara, Hatsumi Yoshiki, Kiyonao Sada, Ikunobu Muramatsu, Takanobu Taniguchi
Intestinal epithelial cells form a tight barrier to act as selective physical barriers, repelling hostile substances. Tumor necrosis factor-α (TNF-α) is a well characterized pro-inflammatory cytokine which can compromise intestinal barrier function and the suppression of TNF-α function is important for treatment of inflammatory bowel disease (IBD). In this study, we investigated the contribution of G-protein-coupled receptor (GPCR)-induced signalling pathways to the maintenance of epithelial barrier function...
April 12, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28374503/tryptase-potentiates-enteric-nerve-activation-by-histamine-and-serotonin-relevance-for-the-effects-of-mucosal-biopsy-supernatants-from-irritable-bowel-syndrome-patients
#3
D Ostertag, A Annahazi, D Krueger, K Michel, I E Demir, G O Ceyhan, F Zeller, M Schemann
BACKGROUND: We previously showed that mucosal biopsy supernatants from irritable bowel syndrome patients activated neurons despite low concentrations of tryptase, histamine, and serotonin which individually would not cause spike discharge. We studied the potentiating responses between these mediators on excitability of enteric neurons. METHODS: Calcium-imaging was performed using the calcium-sensitive dye Fluo-4 AM in human submucous plexus preparations from 45 individuals...
April 4, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28324642/cinnamon-reduces-inflammatory-response-in-intestinal-fibroblasts-in-vitro-and-in-colitis-in-vivo-leading-to-decreased-fibrosis
#4
Yvonne Hagenlocher, Sabrina Satzinger, Mehtap Civelek, Katharina Feilhauer, Jörg Köninger, Stephan C Bischoff, Axel Lorentz
Intestinal fibrosis, a complication of inflammatory bowel disease, is currently being addressed by surgery alone, with no adequate alternative therapy available for patients. We propose that anti-inflammatory plant substances like cinnamon extract (CE) or its main compound cinnamaldeyde (CA) could aid in therapy. We recently found CE reducing inflammation in murine colitis. Here, we analysed effects of CE on fibrosis in IL-10(-/-) colitis METHODS AND RESULTS: IL-10(-/-) and wild type (wt) mice were orally treated with/without vehicle or CE...
March 21, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28252278/bifunctional-succinylated-%C3%AE%C2%B5-polylysine-coated-mesoporous-silica-nanoparticles-for-ph-responsive-and-intracellular-drug-delivery-targeting-the-colon
#5
Chau T H Nguyen, Richard I Webb, Lynette K Lambert, Ekaterina Strounina, Edward C Lee, Marie-Odile Parat, Michael A McGuckin, Amirali Popat, Peter J Cabot, Benjamin P Ross
Conventional oral drug formulations for colonic diseases require the administration of high doses of drug to achieve effective drug concentrations at the target site. However, this exposes patients to serious systemic toxicity in order to achieve efficacy. To overcome this problem, an oral drug delivery system was developed by loading a large amount (ca. 34% w/w) of prednisolone into 3-aminopropyl-functionalized mesoporous silica nanoparticles (MCM-NH2) and targeting prednisolone release to the colon by coating the nanoparticle with succinylated ε-polylysine (SPL)...
March 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28209497/a-multicenter-assessment-of-the-ability-of-preoperative-computed-tomography-scan-and-ca-125-to-predict-gross-residual-disease-at-primary-debulking-for-advanced-epithelial-ovarian-cancer
#6
Rudy S Suidan, Pedro T Ramirez, Debra M Sarasohn, Jerrold B Teitcher, Revathy B Iyer, Qin Zhou, Alexia Iasonos, John Denesopolis, Oliver Zivanovic, Kara C Long Roche, Yukio Sonoda, Robert L Coleman, Nadeem R Abu-Rustum, Hedvig Hricak, Dennis S Chi
OBJECTIVE: To assess the ability of preoperative computed tomography scan and CA-125 to predict gross residual disease (RD) at primary cytoreduction in advanced ovarian cancer. METHODS: A prospective, non-randomized, multicenter trial of patients who underwent primary debulking for stage III-IV epithelial ovarian cancer previously identified 9 criteria associated with suboptimal (>1cm residual) cytoreduction. This is a secondary post-hoc analysis looking at the ability to predict any RD...
April 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28207290/fatty-acid-and-mineral-receptors-as-drug-targets-for-gastrointestinal-disorders
#7
Pawin Pongkorpsakol, Aekkacha Moonwiriyakit, Chatchai Muanprasat
Nutrient-sensing receptors, including fatty acid receptors (FFA1-FFA4), Ca(2+)-sensing receptors and Zn(2+)-sensing receptors, are involved in several biological processes. These receptors are abundantly expressed in the GI tract, where they have been shown to play crucial roles in regulating GI function. This review provides an overview of the GI functions of fatty acid and mineral receptors, including the regulation of gastric and enteroendocrine functions, GI motility, ion transport and cell growth. Recently, several lines of evidence have implicated these receptors as promising therapeutic targets for the treatment of GI disorders, for example, inflammatory bowel disease, colorectal cancer, metabolic syndrome and diarrheal diseases...
February 16, 2017: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/28204957/insights-into-the-role-of-opioid-receptors-in-the-gi-tract-experimental-evidence-and-therapeutic-relevance
#8
James J Galligan, Catia Sternini
Opioid drugs are prescribed extensively for pain treatment but when used chronically they induce constipation that can progress to opioid-induced bowel dysfunction. Opioid drugs interact with three classes of opioid receptors: mu opioid receptors (MORs), delta opioid receptors (DOR), and kappa opioid receptors (KORs), but opioid drugs mostly target the MORs. Upon stimulation, opioid receptors couple to inhibitory Gi/Go proteins that activate or inhibit downstream effector proteins. MOR and DOR couple to inhibition of adenylate cyclase and voltage-gated Ca(2+) channels and to activation of K(+) channels resulting in reduced neuronal activity and neurotransmitter release...
2017: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/28122463/inflammatory-bowel-disease
#9
Grigorios Tsigkas, Periklis Davlouros, Stefanos Despotopoulos, Stelios Assimakopoulos, Georgios Theocharis, George Hahalis
Patients with inflammatory bowel disease (IBD) have a higher incidence of coronary artery disease (CAD) compared with the general population. Left main coronary artery (LMCA) thrombosis constitutes a very rare but catastrophic manifestation of acute coronary syndrome. Case reports describing young patients with IBD and LMCA thrombosis are scarce. Most importantly, patients with a positive family history of thrombotic events and those with significant genetic or acquired risk factors such as the antiphospholipid antibody syndrome, advanced age, immobilization, pregnancy, oral contraceptive use, obesity, diabetes, and cigarette smoking may have a higher risk of thrombosis among those with active IBD...
January 1, 2017: Angiology
https://www.readbyqxmd.com/read/28096305/epithelial-expression-and-function-of-trypsin-3-in-irritable-bowel-syndrome
#10
Claire Rolland-Fourcade, Alexandre Denadai-Souza, Carla Cirillo, Cintya Lopez, Josue Obed Jaramillo, Cleo Desormeaux, Nicolas Cenac, Jean-Paul Motta, Muriel Larauche, Yvette Taché, Pieter Vanden Berghe, Michel Neunlist, Emmanuel Coron, Sylvain Kirzin, Guillaume Portier, Delphine Bonnet, Laurent Alric, Stephen Vanner, Celine Deraison, Nathalie Vergnolle
OBJECTIVES: Proteases are key mediators of pain and altered enteric neuronal signalling, although the types and sources of these important intestinal mediators are unknown. We hypothesised that intestinal epithelium is a major source of trypsin-like activity in patients with IBS and this activity signals to primary afferent and enteric nerves and induces visceral hypersensitivity. DESIGN: Trypsin-like activity was determined in tissues from patients with IBS and in supernatants of Caco-2 cells stimulated or not...
January 17, 2017: Gut
https://www.readbyqxmd.com/read/28087670/plant-lectins-activate-the-nlrp3-inflammasome-to-promote-inflammatory-disorders
#11
Tao Gong, Xiaqiong Wang, Yanqing Yang, Yiqing Yan, Chenggong Yu, Rongbin Zhou, Wei Jiang
Plant-derived dietary lectins have been reported to be involved in the pathogenesis of several inflammatory diseases, including inflammatory bowel disease, diabetes, rheumatoid arthritis, and celiac disease, but little is known about the molecular mechanisms underlying lectin-induced inflammation. In this study, we showed that plant lectins can induce caspase-1 activation and IL-1β secretion via the NLRP3 inflammasome. Lectins were internalized and subsequently escaped from the lysosome and then translocated to the endoplasmic reticulum...
January 13, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28047756/we-ab-207b-09-margin-reduction-for-planning-target-volume-ptv-in-patients-with-localized-prostate-cancer-impact-on-delivered-dose-and-quality-of-life
#12
A Kumarasiri, C Liu, S Brown, C Glide-Hurst, M Elshaikh, I Chetty, B Movsas
PURPOSE: To estimate the delivered (cumulative) dose to targets and organs at risk for localized prostate cancer patients treated with reduced PTV margins and to evaluate preliminary patient reported quality-of-life (QOL). METHODS: Under an IRB-approved protocol, 20 prostate cancer patients (including 11 control patients) were treated with reduced planning margins (5 mm uniform with 4 mm at prostate/rectum interface). Control patients had standard margin (10/6 mm)-based treatments...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046466/su-f-t-395-evaluation-of-best-dosimetry-achievable-with-vmat-and-imrt-treatment-techniques-targeting-borderline-resectable-pancreatic-cancer
#13
K Harpool, E Schnell, T Herman, S Ahmad, T De La Fuente Herman
PURPOSE: To determine from retrospective study the most appropriate technique for targeting small borderline operable pancreatic cancer surrounding blood vessels by evaluating the dosimetry and normal tissue sparing achievable using Volumetric Modulated Arc Therapy (VMAT) and Intensity Modulated Radiation Therapy (IMRT). METHODS: Treatment plans from ten patients who have undergone treatment with a prescribed dose of 4950 cGy, at 275 cGy per fraction, were analyzed...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28028930/an-update-on-cancer-risk-and-surveillance-in-primary-sclerosing-cholangitis
#14
REVIEW
Jennifer L Horsley-Silva, Eduardo A Rodriguez, Diana L Franco, Keith D Lindor
Malignancy represents substantial morbidity and mortality in patients with primary sclerosing cholangitis (PSC). This subset of patients has been proven to be at increased risk for developing cholangiocarcinoma, gallbladder carcinoma and colorectal cancer in those with overlapping inflammatory bowel disease. Herein, we review the prevalence of these malignancies and recommend screening tools and current knowledge to reduce the disease burden in this population. Cholangiocarcinoma is the most dominant malignancy affecting PSC patients, with a lifetime risk ranging from 5% to 20%...
December 27, 2016: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28011967/reduced-wound-infection-in-colorectal-resection-by-using-a-wound-auto-retractor
#15
Juan J Arenal, Agustín Martínez, María V Maderuelo, Claudia Tinoco, César Benito, Miguel A Citores, José M Eiros
Surgical site infection (SSI) remains an important problem in colorectal surgery. The aim of this study is to determine whether the use of a wound protection system can be effective in reducing the incidence of wound infection after colorectal resection. Ninety-five consecutive patients underwent colorectal resection, carried out by one single surgeon during a six-year period (2009-2015). A laparotomy auto-retractor was used in all cases (Alexis Wound Retractor; Applied Medical, Rancho Santa Margarita, CA)...
December 1, 2016: Le Infezioni in Medicina
https://www.readbyqxmd.com/read/27965521/lymphocyte-antigen-75-polymorphisms-are-associated-with-disease-susceptibility-and-phenotype-in-japanese-patients-with-inflammatory-bowel-disease
#16
COMPARATIVE STUDY
Atsuhiro Hirayama, Satoru Joshita, Kei Kitahara, Kenji Mukawa, Tomoaki Suga, Takeji Umemura, Eiji Tanaka, Masao Ota
Recent genome-wide association studies have rapidly improved our understanding of the molecular pathways leading to inflammatory bowel disease (IBD), which includes Crohn's disease (CD) and ulcerative colitis (UC). Although several reports have demonstrated that gene single nucleotide polymorphisms (SNPs) are associated with susceptibility to IBD, its precise genetic factors have not been fully clarified. Here, we performed an association analysis between lymphocyte antigen 75 (LY75) genetic variations and IBD susceptibility or phenotype...
2016: Disease Markers
https://www.readbyqxmd.com/read/27896155/colonic-atresia-association-with-other-anomalies
#17
Khaled M El-Asmar, Mohammed Abdel-Latif, Abdel-Hamid A El-Kassaby, Mohamed H Soliman, Mosad M El-Behery
BACKGROUND: Colonic atresia (CA) is a rare form of congenital intestinal atresia. Although CA may be isolated, it is more commonly reported in literature in association with other congenital anomalies. MATERIALS AND METHODS: This study is a review of prospectively collected data of all the patients with colonic atresia presented to our center (Ain Shams University) during 2008 to 2016. RESULTS: Twelve patients were enrolled in this study. The atresia was of type I in one case, type II in four cases, type IIIa in six cases, type IV in one case...
October 2016: Journal of Neonatal Surgery
https://www.readbyqxmd.com/read/27895892/sexual-dimorphism-in-the-mast-cell-transcriptome-and-the-pathophysiological-responses-to-immunological-and-psychological-stress
#18
Emily Mackey, Saravanan Ayyadurai, Calvin S Pohl, Susan D' Costa, Yihang Li, Adam J Moeser
BACKGROUND: Biological sex plays a prominent role in the prevalence and severity of a number of important stress-related gastrointestinal and immune-related diseases including IBS and allergy/anaphylaxis. Despite the establishment of sex differences in these diseases, the underlying mechanisms contributing to sex differences remain poorly understood. The objective of this study was to define the role of biological sex on mast cells (MCs), an innate immune cell central to the pathophysiology of many GI and allergic disorders...
2016: Biology of Sex Differences
https://www.readbyqxmd.com/read/27866394/repeated-otilonium-bromide-administration-prevents-neurotransmitter-changes-in-colon-of-rats-underwent-to-wrap-restraint-stress
#19
Chiara Traini, Stefano Evangelista, Vincent Girod, Maria Simonetta Faussone-Pellegrini, Maria Giuliana Vannucchi
Otilonium bromide (OB) is a spasmolytic drug successfully used for the treatment of irritable bowel syndrome (IBS). Its efficacy has been attributed to the block of L- and T-type Ca(2+) channels and muscarinic and tachykinin receptors in the smooth muscle. Furthermore, in healthy rats, repeated OB administration modified neurotransmitter expression and function suggesting other mechanisms of action. On this basis, we investigated whether repeated OB treatment prevented the functional and neurochemical changes observed in the colon of rats underwent to wrap restrain stress (WRS) a psychosocial stressor considered suitable to reproduce the main IBS signs and symptoms...
April 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/27843688/extreme-lateral-lumbar-interbody-fusion-do-the-cons-outweigh-the-pros
#20
Nancy E Epstein
BACKGROUND: Major factors prompted the development of minimally invasive (MIS) extreme lateral interbody fusion (XLIF; NuVasive Inc., San Diego, CA, USE) for the thoracic/lumbar spine. These include providing interbody stabilization and indirect neural decompression while avoiding major visceral/vessel injury as seen with anterior lumbar interbody fusion (ALIF), and to avert trauma to paraspinal muscles/facet joints found with transforaminal lumbar interbody fusion (TLIF), posterior lumbar interbody fusion (PLIF), and posterior-lateral fusion techniques (PLF)...
2016: Surgical Neurology International
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