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https://www.readbyqxmd.com/read/29353017/ph-triggered-surface-charge-reversal-nanoparticles-alleviate-experimental-murine-colitis-via-selective-accumulation-in-inflamed-colon-regions
#1
Muhammad Naeem, Murtada A Oshi, Jihyun Kim, Juho Lee, Jiafu Cao, Hasan Nurhasni, Eunok Im, Yunjin Jung, Jin-Wook Yoo
In this study, we developed pH-triggered surface charge-reversal lipid nanoparticles (LNPs), loaded with budesonide, which could precisely deliver the drug to inflamed colon segments for the treatment of ulcerative colitis. Polyethyleneimine (PEI) was used to render LNPs cationic (PEI-LNPs), and Eudragit® S100 (ES) was coated on PEI-LNPs to obtain pH-triggered charge-reversal LNPs (ES-PEI-LNPs). ES coating avoided a burst drug release under acidic conditions mimicking the stomach and early small intestine environments and showed a sustained release in the colon...
January 15, 2018: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/29352742/cambogin-suppresses-dextran-sulphate-sodium-induced-colitis-by-enhancing-treg-cell-stability-and-function
#2
Yue Lu, Na-Mi Kim, Yi-Wen Jiang, Hong Zhang, Dan Zheng, Fu-Xiang Zhu, Rui Liang, Bin Li, Hong-Xi Xu
BACKGROUND AND PURPOSE: Inflammatory bowel disease (IBD) is a chronic and relapsing inflammatory disorder of gastrointestinal tract, and the dysfunction of immune regulation plays a critical role in IBD. Reflecting the limited use of current drugs and therapies for IBD treatment, it is necessary to explore novel drugs or therapies for this disease. We investigated the effect of cambogin in a mouse model of dextran sulphate sodium (DSS)-induced colitis and whether cambogin attenuates inflammation via Treg-cell-mediated immune modulation...
January 20, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29352490/oral-lichenoid-reaction-showing-multiple-ulcers-associated-with-anti-programmed-death-cell-receptor-1-treatment-a-report-of-two-cases-and-published-work-review
#3
Koya Obara, Mamiko Masuzawa, Yasuyuki Amoh
Anti-programmed cell death receptor-1 (PD-1) antibodies represent an effective treatment opinion for advanced melanoma and non-small-cell lung cancer, as well as other cancerous entities. Immune checkpoint inhibitors such as anti-PD-1 antibody result in a unique side-effect profile, commonly described as immune-related adverse events (irAE). These irAE affect the skin, gastrointestinal tract, liver, endocrine system and other organ systems. We report two cases of oral lichenoid reaction showing multiple ulcers associated with nivolumab treatment...
January 20, 2018: Journal of Dermatology
https://www.readbyqxmd.com/read/29352082/clostridial-strain-specific-characteristics-associated-with-necrotizing-enterocolitis
#4
Sophia Schönherr-Hellec, Geraldine L Klein, Johanne Delannoy, Laurent Ferraris, Jean Christophe Rozé, Marie José Butel, Julio Aires
We aimed at identifying potential clostridial factors linking these bacteria with necrotizing enterocolitis (NEC). We compared the phenotypic traits, stress responses, cellular cytotoxicity and inflammatory capabilities of the largest collection of Clostridium butyricum and Clostridium neonatale strains isolated from fecal samples of NEC and control preterm neonates (PN). When strains characteristics were used as explanatory variables, a statistical discriminant analysis allowed the separation of NEC and control strains into separate groups...
January 19, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29351985/tocilizumab-tacrolimus-and-methotrexate-for-the-prevention-of-acute-graft-versus-host-disease-low-incidence-of-lower-gastrointestinal-tract-disease
#5
William R Drobyski, Aniko Szabo, Fenlu Zhu, Carolyn Keever-Taylor, Kyle M Hebert, Renee Dunn, Sharon Yim, Bryon Johnson, Anita D'Souza, Mary Eapen, Timothy S Fenske, Parameswaran Hari, Mehdi Hamadani, Mary M Horowitz, J Douglas Rizzo, Wael Saber, Nirav Shah, Bronwen Shaw, Marcelo Pasquini
We conducted a phase 2 study in which patients undergoing allogeneic hematopoietic stem cell transplantation received Tocilizumab in addition to standard immune suppression with tacrolimus and methotrexate for graft versus host disease prophylaxis. Thirty-five patients were enrolled between January 2015 and June 2016. The median age of the cohort was 66 (range 22-76). All patients received busulfan-based conditioning, and were transplanted with HLA-matched related or matched unrelated bone marrow or peripheral stem cell grafts...
January 19, 2018: Haematologica
https://www.readbyqxmd.com/read/29350563/dietary-advanced-glycosylation-end-products-dages-and-melanoidins-formed-through-maillard-reaction-physiological-consequences-of-their-intake
#6
Cristina Delgado-Andrade, Vincenzo Fogliano
The main purpose of this review is to clarify whether the consumption of food rich in melanoidins and dietary advanced glycosylation end-products (dAGEs) are harmful or beneficial for human health. There are conflicting results on their harmful effects in the literature, partly due to a methodological issue in how dAGEs are determined in food. Melanoidins have positive functions particularly within the gastrointestinal tract, whereas the intake of dAGEs has controversial physiological consequences. Most of the in vivo intervention trials were done comparing boiled versus roasted diet (low and high dAGE, respectively)...
January 18, 2018: Annual Review of Food Science and Technology
https://www.readbyqxmd.com/read/29350533/development-of-pickering-emulsions-stabilized-by-gliadin-proanthocyanidins-hybrid-particles-gphps-and-the-fate-of-lipid-oxidation-and-digestion
#7
Fu-Zhen Zhou, Li Yan, Shou-Wei Yin, Chuan-He Tang, Xiao-Quan Yang
This work attempted to engineer emulsions' interface using special affinity between proline-rich gliadin and proanthocyanidins (PA), to develop surfactant-free antioxidant Pickering emulsions with digestive-resistant properties. This binding interaction between gliadin and PA benefited the interfacial adsorption of the particles to corn oil droplets. Pickering droplets as building units assembled into interconnected three-dimensional network structure, giving the emulsions viscoelasticity and ultra-stability...
January 19, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29350339/emerging-insights-into-the-esophageal-microbiome
#8
REVIEW
Michael May, Julian A Abrams
PURPOSE OF REVIEW: Analysis of the esophageal microbiome remains a relatively new field of research, and most studies to date have focused on characterizing the esophageal microbiome in states of health and disease. Microbiome alterations have been implicated in the pathogenesis of inflammatory and neoplastic conditions in the colon and elsewhere in the gastrointestinal tract. The epidemiology of various esophageal conditions including Barrett's esophagus (BE), esophageal adenocarcinoma (EAC), esophageal squamous cell carcinoma (ESCC), and eosinophilic esophagitis (EoE) point to the microbiome as a potential co-factor in disease pathogenesis, and the possibility exists that these microbiome alterations could contribute directly to the inflammatory environments necessary for the carcinogenesis or atopy involved in these conditions...
January 19, 2018: Current Treatment Options in Gastroenterology
https://www.readbyqxmd.com/read/29350021/bodybuilding-protein-supplements-and-cow-s-milk-allergy-in-adult
#9
M J C S Sousa, A L Reis Ferreira, J P Moreira da Silva
We report a case of a previously healthy 24-year-old man with a 3-month history of gastrointestinal symptoms during exercise and also few minutes after the ingestion of cow's milk (CM) without exercise. He reported the ingestion of a blend of hydrolyzed whey and casein proteins for bodybuilding for the last 2 years. The in vivo tests showed positivity to CM, α-lactalbumin, β-lactoglobulin and casein extracts, and also to the protein supplement. The serum specific IgE was positive for CM, β-lactoglobulin and α-lactalbumin...
January 2018: European Annals of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29349925/ethanolamine-is-a-valuable-nutrient-source-that-impacts-clostridium-difficile-pathogenesis
#10
Kathryn L Nawrocki, Daniela Wetzel, Joshua B Jones, Emily C Woods, Shonna M McBride
Clostridium (Clostridioides) difficile is a gastrointestinal pathogen that colonizes the intestinal tract of mammals and can cause severe diarrheal disease. Although C. difficile growth is confined to the intestinal tract, our understanding of the specific metabolites and host factors that are important for the growth of the bacterium is limited. In other enteric pathogens, the membrane-derived metabolite, ethanolamine (EA), is utilized as a nutrient source and can function as a signal to initiate the production of virulence factors...
January 19, 2018: Environmental Microbiology
https://www.readbyqxmd.com/read/29349463/stability-and-digestibility-of-one-or-bi-layered-medium-chain-triglyceride-emulsions-with-gum-arabic-and-whey-protein-isolates-by-pancreatic-lipase-in-vitro
#11
Xiaolin Yao, Yu Chen, Meng Shu, Kun Zhang, Zhiming Gao, Ying Kuang, Yapeng Fang, Katsuyoshi Nishinari, Glyn O Phillips, Fatang Jiang
Interfacial engineering approaches have been used to design functional foods so as to control lipase-induced digestion of emulsified lipids and release of bioactive lipophilic components in the gastrointestinal tract. In this study, emulsion droplets with the interface stabilized with gum Arabic (GA) and whey protein isolate (WPI) were prepared by mixing or sequential adsorption. WPI/GA intramolecular soluble complexes (ISCs) have superior emulsifying properties in stabilizing oil-in-water emulsions. The impact of the interfaces for WPI/GA ISC-layered (one-layered) and double-layered emulsions formed by sequential deposition of WPI or GA on the lipolysis of emulsions was investigated using an in vitro simulated gastrointestinal model...
January 19, 2018: Food & Function
https://www.readbyqxmd.com/read/29346827/efficacy-and-complications-of-submucosal-tunneling-endoscopic-resection-for-upper-gastrointestinal-submucosal-tumors-and-exploration-for-influencing-factors
#12
Shunzhe Song, Xu Wang, Shen Zhang, Yanxia Li, Xiaonan Zhang, Xufang Chu
BACKGROUND:  Submucosal tunneling endoscopic resection (STER) has emerged as a feasible technique for resecting upper gastrointestinal (GI) tract submucosal tumors (SMTs) through natural orifice transluminal endoscopic surgery. STER reduces the risk of postoperative perforation and abdominal infections and promotes rapid wound healing. The aim of this meta-analysis was to evaluate the safety and efficacy of STER for small (≤ 3.5 cm) upper GI SMTs and explore the potential factors influencing STER's efficacy and complication rate...
January 18, 2018: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/29346826/gastroduodenal-intussusception-and-pylorus-obstruction-induced-by-a-c-kit-negative-gastric-gastrointestinal-stromal-tumor-case-report-and-review-of-the-literature
#13
Yong Zhou, Xu-Dong Wu, Quan Shi, Chuan-Hai Xu, Jing Jia
INTRODUCTION:  Gastrointestinal stromal tumors (GISTs) are infrequently reported to cause gastroduodenal intussusception, especially in the cases with complete pylorus obstruction. GISTs comprise only 1 - 3 % of all gastrointestinal tract tumors, and most of them strongly express the c-KIT protein. Approximately 5 % of GISTs show negative staining of c-KIT. CASE PRESENTATION:  A 69-year-old man complained of acute abdominal pain accompanied with nausea and vomiting for 6 hours...
January 18, 2018: Zeitschrift Für Gastroenterologie
https://www.readbyqxmd.com/read/29346716/neuropeptide-af-induces-piecemeal-degranulation-in-murine-mucosal-mast-cells-a-new-mediator-in-neuro-immune-communication-in-the-intestinal-lamina-propria
#14
Nada Abdellah, Samuel Van Remoortel, Omnia Mohey-Elsaeed, Mohamed-Nabil Mostafa, Yasser A Ahmed, Jean-Pierre Timmermans, Roeland Buckinx
Neuropeptides AF (NPAF), FF (NPFF) and SF (NPSF) are RFamide neuropeptides known to be widely expressed in the mammalian central nervous system, where they fulfill a wide range of functions with pain modulation being the most prominent one. Recent evidence indicates that RFamides act as mediators in mast cell-sensory nerve communications related to allergic disease. Previous work by our group has shown that the expression levels of some members of the Mas-related gene receptor (Mrgpr) family in both enteric neurons and mucosal mast cells change during intestinal inflammation...
January 18, 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29346344/development-of-immune-and-microbial-environments-is-independently-regulated-in-the-mammary-gland
#15
K Niimi, K Usami, Y Fujita, M Abe, M Furukawa, Y Suyama, Y Sakai, M Kamioka, N Shibata, E J Park, S Sato, H Kiyono, H Yoneyama, H Kitazawa, K Watanabe, T Nochi, H Aso
Breastfeeding is important for mammals, providing immunological and microbiological advantages to neonates, together with the nutritional supply from the mother. However, the mechanisms of this functional diversity in the mammary gland remain poorly characterized. Here, we show that, similar to the gastrointestinal tract, the mammary gland develops immune and microbial environments consisting of immunoglobulin A (IgA) and the microflora, respectively, both of which are important for protecting neonates and the mother from infectious diseases...
December 20, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/29346215/challenges-and-perspectives-for-immunotherapy-in-adenocarcinoma-of-the-pancreas-the-cancer-immunity-cycle
#16
Markus Kieler, Matthias Unseld, Daniela Bianconi, Gerald Prager
Pancreatic ductal adenocarcinoma (PDAC) is a lethal disease with a devastating 5-year overall survival of only approximately 7%. Although just 4% of all malignant diseases are accounted to PDAC, it will become the second leading cause of cancer-related deaths before 2030. Immunotherapy has proven to be a promising therapeutic option in various malignancies such as melanoma, non-small cell lung cancer (NSCLC), microsatellite instability-high gastrointestinal cancer, urinary tract cancer, kidney cancer, and others...
February 2018: Pancreas
https://www.readbyqxmd.com/read/29346049/microphthalmia-corneal-dermoids-and-congenital-anomalies-resembling-goldenhar-syndrome-in-a-cat
#17
William Berkowski, Ingeborg Langohr, Anthony Pease, Joshua Bartoe
CASE DESCRIPTION An 18-month-old spayed female domestic shorthair cat was evaluated because of conjunctivitis and skin-fold dermatitis secondary to bilateral microphthalmia, corneal dermoids, and ankyloblepharon. CLINICAL FINDINGS Physical examination revealed bilateral microphthalmia, bilaterally symmetrical corneal dermoids, ankyloblepharon, superior and inferior entropion, prognathism, and facial asymmetry with deviation of the nasal septum. Computed tomography revealed malformed, thickened bony orbits with mineralization of the orbital ligament bilaterally...
February 1, 2018: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/29345975/nano-and-micro-particles-for-delivery-of-catechins-physical-and-biological-performance
#18
Jian-Hui Ye, Mary Ann Augustin
Catechins, present in many fruits and vegetables, have many health benefits, but they are prone to degradation. Nano- and micro-particle systems have been used to stabilise catechins when exposed to adverse environments and to improve their bioavailability after ingestion. This review discusses the inherent properties of various catechins, the design of delivery formulations and the properties of catechin-loaded nano- and micro-particles. The protection afforded to catechins during exposure to harsh environmental conditions and gastrointestinal tract transit is reviewed...
January 18, 2018: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/29345756/clinical-intentions-of-antibiotics-prescribed-upon-discharge-to-hospice-care
#19
Sarah A Servid, Brie N Noble, Erik K Fromme, Jon P Furuno
OBJECTIVES: To better understand the clinical intentions for antibiotic prescribing upon discharge from acute care to hospice care. DESIGN: Retrospective cohort study. SETTING: Five hundred forty-four-bed academic, acute-care, tertiary referral hospital in Portland, Oregon. PARTICIPANTS: Adults (≥18) who received an outpatient prescription for antibiotics on discharge from an acute care hospital to hospice care between January 1, 2009 and December 31, 2011 (N = 149)...
January 18, 2018: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/29345518/bacterial-pathogenesis-and-interleukin-17-interconnecting-mechanisms-of-immune-regulation-host-genetics-and-microbial-virulence-that-influence-severity-of-infection
#20
Michelle N Chamoun, Antje Blumenthal, Matthew J Sullivan, Mark A Schembri, Glen C Ulett
Interleukin-17 (IL-17) is a pro-inflammatory cytokine involved in the control of many different disorders, including autoimmune, oncogenic, and diverse infectious diseases. In the context of infectious diseases, IL-17 protects the host against various classes of microorganisms but, intriguingly, can also exacerbate the severity of some infections. The regulation of IL-17 expression stems, in part, from the activity of Interleukin-23 (IL-23), which drives the maturation of different classes of IL-17-producing cells that can alter the course of infection...
January 18, 2018: Critical Reviews in Microbiology
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