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https://www.readbyqxmd.com/read/28912020/intestinal-dysbiosis-featuring-abundance-of-ruminococcus-gnavus-associates-with-allergic-diseases-in-infants
#1
Huey-Huey Chua, Hung-Chieh Chou, Ya-Ling Tung, Bor-Luen Chiang, Chien-Chia Liao, Hong-Hsing Liu, Yen-Hsuan Ni
BACKGROUND & AIMS: Dysbiosis of the intestinal microbiota has been associated with development of allergies in infants. However, it is not clear what microbes might contribute to this process. We investigated what microbe(s) might be involved in analyses of infant twins and mice. METHODS: We studied fecal specimens prospectively in a twin cohort (n=30) and age-matched singletons (n=14) born at National Taiwan University Children's Hospital, Taipei, Taiwan, from April 2011 to March 2013...
September 11, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28860510/a-functional-il1rl1-variant-regulates-corticosteroid-induced-sst2-expression-in-ulcerative-colitis
#2
David Díaz-Jiménez, Lucía Núñez, Marjorie De la Fuente, Karen Dubois-Camacho, Hugo Sepúlveda, Martín Montecino, Alejandro Torres-Riquelme, Paulina García-González, Jonás Chnaiderman, Anna Vossenkamper, Thomas T MacDonald, Daniela Simian, María-Julieta González, John A Cidlowski, Rodrigo Quera, Marcela A Hermoso
The ST2/IL33 signalling pathway has been associated with ulcerative colitis (UC). ST2, encoded by the IL1RL1 gene, is expressed as both a membrane-anchored receptor (ST2L) activated by IL33 and as a soluble receptor (sST2) with anti-inflammatory properties. In UC patients, sST2 is further increased by corticosteroid treatment; however, the glucocorticoid-mediated molecular regulation remains unknown. We therefore tested whether genetic variants in the IL1RL1 distal promoter are involved in UC and affect glucocorticoid-mediated ST2 expression...
August 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28742815/il33-mediated-ilc2-activation-and-neutrophil-il5-production-in-the-lung-response-after-severe-trauma-a-reverse-translation-study-from-a-human-cohort-to-a-mouse-trauma-model
#3
Jing Xu, Jesse Guardado, Rosemary Hoffman, Hui Xu, Rami Namas, Yoram Vodovotz, Li Xu, Mostafa Ramadan, Joshua Brown, Heth R Turnquist, Timothy R Billiar
BACKGROUND: The immunosuppression and immune dysregulation that follows severe injury includes type 2 immune responses manifested by elevations in interleukin (IL) 4, IL5, and IL13 early after injury. We hypothesized that IL33, an alarmin released early after tissue injury and a known regulator of type 2 immunity, contributes to the early type 2 immune responses after systemic injury. METHODS AND FINDINGS: Blunt trauma patients admitted to the trauma intensive care unit of a level I trauma center were enrolled in an observational study that included frequent blood sampling...
July 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28731540/participation-of-osteoclastogenic-factors-in-immunopathogenesis-of-human-chronic-periapical-lesions
#4
S C L T Santos, L A Couto, J M Fonseca, F C A Xavier, A C L Figueiredo, V S Freitas, R A Freitas, J N Santos, A C G Henriques
BACKGROUND: Chronic periapical lesions (CPLs) are common lesions of the oral cavity and are the result of caries, tooth fracture, iatrogenic causes, or factors causing contamination and pulp necrosis. Inflammatory cells participate in the expansion of CPLs by releasing factors that stimulate or inhibit osteolytic activity. The objective of this study was to investigate the participation of RANKL, TNF-α, cathepsin K, IL-33, and OPG in the development of radicular cysts (RCs) and periapical granulomas (PGs)...
July 21, 2017: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/28675392/interleukin33-deficiency-causes-tau-abnormality-and-neurodegeneration-with-alzheimer-like-symptoms-in-aged-mice
#5
C Carlock, J Wu, J Shim, I Moreno-Gonzalez, M R Pitcher, J Hicks, A Suzuki, J Iwata, J Quevado, Y Lou
Late-onset Alzheimer's disease (AD) remains a medical mystery. Recent studies have linked it to impaired repair of aged neurons. Potential involvement of interleukin33 (IL33) in AD has been reported. Here we show that IL33, which was expressed by up to 75% astrocytes in the aged brains, was critical for repair of aged neurons. Mice lacking Il33 gene (Il33(-/-)) developed AD-like disease after 60-80 weeks, which was characterized by tau abnormality and a heavy loss of neurons/neurites in the cerebral cortex and hippocampus accompanied with cognition/memory impairment...
July 4, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28671097/clinical-observation-on-the-therapeutic-effect-of-desloratadine-citrate-disodium-in-the-treatment-of-chronic-urticaria-and-changes-in-il4-il18-il23-and-il-33-levels-before-and-after-treatment
#6
Dinghui Zheng, Xian Yang
The effect of citrate to Desloratadine Citrate Disodium set in the treatment of chronic urticaria in patients with IL4, IL18, and IL23, IL33 levels was investigated. 100 cases of chronic urticaria treated in our hospital from January 2013 to January 2015 were divided into study group and control group by random number table method. Patients in the study group with chloric thunder of citric acid treatment, the control group were treated with mizolastine in the treatment, the treatment time for 2 weeks. The difference of curative effect between the two groups and the changes of IL4, IL18, IL23, IL 33 before and after treatment in two groups were compared...
May 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28655069/delivery-of-parasite-cdg7_flc_0990-rna-transcript-into-intestinal-epithelial-cells-during-cryptosporidium-parvum-infection-suppresses-host-cell-gene-transcription-through-epigenetic-mechanisms
#7
Yang Wang, Ai-Yu Gong, Shibin Ma, Xiqiang Chen, Juliane K Strauss-Soukup, Xian-Ming Chen
Cryptosporidial infection causes dysregulated transcription of host genes key to intestinal epithelial homeostasis, but the underlying mechanisms remain obscure. Previous studies demonstrate that several C. parvum RNA transcripts are selectively delivered into epithelial cells during host cell invasion and may modulate gene transcription in infected cells. We report here that C. parvum infection suppresses the transcription of LRP5, SLC7A8, and IL33 genes in infected intestinal epithelium. Trans-suppression of these genes in infected host cells is associated with promoter enrichment of suppressive epigenetic markers (i...
June 27, 2017: Cellular Microbiology
https://www.readbyqxmd.com/read/28433687/steroid-resistance-of-airway-type-2-innate-lymphoid-cells-from-patients-with-severe-asthma-the-role-of-thymic-stromal-lymphopoietin
#8
Sucai Liu, Mukesh Verma, Lidia Michalec, Weimin Liu, Anand Sripada, Donald Rollins, James Good, Yoko Ito, HongWei Chu, Magdalena M Gorska, Richard J Martin, Rafeul Alam
BACKGROUND: Type 2 innate lymphoid cells (ILC2s) represent an important type 2 immune cell. Glucocorticoid regulation of human ILC2s is largely unknown. OBJECTIVE: We sought to assess steroid resistance of human blood and airway ILC2s from asthmatic patients and to examine its mechanism of induction. METHODS: We studied human blood and lung ILC2s from asthmatic patients and control subjects using flow cytometry and ELISA. RESULTS: Dexamethasone inhibited (P = ...
April 20, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28423364/increased-expression-of-deleted-in-malignant-brain-tumors-dmbt1-gene-in-precancerous-gastric-lesions-findings-from-human-and-animal-studies
#9
Jone Garay, M Blanca Piazuelo, Lizbeth Lopez-Carrillo, Yelda A Leal, Sumana Majumdar, Li Li, Nataly Cruz-Rodriguez, Silvia J Serrano-Gomez, Carlos S Busso, Barbara G Schneider, Alberto G Delgado, Luis E Bravo, Angela M Crist, Stryder M Meadows, M Constanza Camargo, Keith T Wilson, Pelayo Correa, Jovanny Zabaleta
Helicobacter pylori infection triggers a cascade of inflammatory stages that may lead to the appearance of non-atrophic gastritis, multifocal atrophic, intestinal metaplasia, dysplasia, and cancer. Deleted in malignant brain tumors 1 (DMBT1) belongs to the group of secreted scavenger receptor cysteine-rich proteins and is considered to be involved in host defense by binding to pathogens. Initial studies showed its deletion and loss of expression in a variety of tumors but the role of this gene in tumor development is not completely understood...
July 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28418072/myb-gata1-fusion-promotes-basophilic-leukaemia-involvement-of-interleukin-33-and-nerve-growth-factor-receptors
#10
Stéphane Ducassou, Valérie Prouzet-Mauléon, Marie-Céline Deau, Philippe Brunet de la Grange, Bruno Cardinaud, Hayssam Soueidan, Cathy Quelen, Pierre Brousset, Jean-Max Pasquet, François Moreau-Gaudry, Michel Arock, François-Xavier Mahon, Eric Lippert
Acute basophilic leukaemia (ABL) is a rare subtype of acute myeloblastic leukaemia. We previously described a recurrent t(X;6)(p11;q23) translocation generating an MYB-GATA1 fusion gene in male infants with ABL. To better understand its role, the chimeric MYB-GATA1 transcription factor was expressed in CD34-positive haematopoietic progenitors, which were transplanted into immunodeficient mice. Cells expressing MYB-GATA1 showed increased expression of markers of immaturity (CD34), of granulocytic lineage (CD33 and CD117), and of basophilic differentiation (CD203c and FcϵRI)...
July 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28412870/the-effect-of-diabetes-on-ovaries-in-a-rat-model-the-role-of-interleukin-33-and-apoptosis
#11
Cenk Nayki, Umit Nayki, Mehmet Kulhan, Mustafa Ozkaraca, Serdar Altun, Murat Cankaya, Oruc Alper Onk, Pasa Ulug
Interleukin-33 (IL-33) is a novel cytokine involved in diabetes mellitus (DM) but its role in diabetic ovarian injury is unknown. As IL-33 is modulated by apoptosis, we aimed at investigating the effect of diabetes on ovaries in terms of evaluating apoptosis and IL-33 in a rat model. In this prospective experimental study, 16 female, nonpregnant Sprague-Dawley albino rats (12 weeks, 220-240 g) were randomly divided into two groups. Group 1 included eight healthy nondiabetic rats as controls and group 2 included eight rats in which diabetes was induced by intraperitoneal (i...
April 17, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28410870/interleukin-33-in-children-with-asthma-a-systematic-review-and-meta-analysis
#12
Y Wang, L Wang, S Hua
BACKGROUND: Previous studies have shown that serum interleukin 33 serving as an "alarmin" is increased in children with asthma. The objective of this study was to assess the validity of serum IL33 test for early diagnosis of childhood asthma. METHODS: A literature search was performed in June 2016 using PubMed, Embase, the Cochrane Library and other Chinese Medical Databases to identify studies. The search terms used were "cytokine", "interleukin-33", "asthma" and "children"...
July 2017: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/28273074/a-rare-il33-loss-of-function-mutation-reduces-blood-eosinophil-counts-and-protects-from-asthma
#13
Dirk Smith, Hannes Helgason, Patrick Sulem, Unnur Steina Bjornsdottir, Ai Ching Lim, Gardar Sveinbjornsson, Haruki Hasegawa, Michael Brown, Randal R Ketchem, Monica Gavala, Logan Garrett, Adalbjorg Jonasdottir, Aslaug Jonasdottir, Asgeir Sigurdsson, Olafur T Magnusson, Gudmundur I Eyjolfsson, Isleifur Olafsson, Pall Torfi Onundarson, Olof Sigurdardottir, David Gislason, Thorarinn Gislason, Bjorn Runar Ludviksson, Dora Ludviksdottir, H Marike Boezen, Andrea Heinzmann, Marcus Krueger, Celeste Porsbjerg, Tarunveer S Ahluwalia, Johannes Waage, Vibeke Backer, Klaus A Deichmann, Gerard H Koppelman, Klaus Bønnelykke, Hans Bisgaard, Gisli Masson, Unnur Thorsteinsdottir, Daniel F Gudbjartsson, James A Johnston, Ingileif Jonsdottir, Kari Stefansson
IL-33 is a tissue-derived cytokine that induces and amplifies eosinophilic inflammation and has emerged as a promising new drug target for asthma and allergic disease. Common variants at IL33 and IL1RL1, encoding the IL-33 receptor ST2, associate with eosinophil counts and asthma. Through whole-genome sequencing and imputation into the Icelandic population, we found a rare variant in IL33 (NM_001199640:exon7:c.487-1G>C (rs146597587-C), allele frequency = 0.65%) that disrupts a canonical splice acceptor site before the last coding exon...
March 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28266165/il33-and-il1rl1-variants-are-associated-with-asthma-and-atopy-in-a-brazilian-population
#14
G A Queiroz, R S Costa, N M Alcantara-Neves, G Nunes de Oliveira Costa, M L Barreto, V L Carneiro, C A Figueiredo
Atopic asthma is a chronic inflammatory disease in airways resulting from genetic and environmental factors, characterized by production of the Th2 cytokines interleukin-4 (IL-4), interleukin-5 (IL-5) and interleukin-13 (IL-13). Interleukin-33 (IL-33) appears to be a potent inducer of Th2 immune response. This occurs when IL-33 binds and activates its receptor, the membrane ST2 (ST2L) in mast cells, dendritic cells, basophils, eosinophils, innate lymphoids and Th2 cells, leading to the release of these cytokines and intensifying allergic inflammation...
April 2017: International Journal of Immunogenetics
https://www.readbyqxmd.com/read/28229819/dabigatran-aggravates-topoisomerase-i-peptide-loaded-dendritic-cells-induced-lung-and-skin-fibrosis
#15
Heena Mehta, Shunya Mashiko, Philippe-Olivier Goulet, Jade Desjardins, Gemma Pérez, Martial Koenig, Jean-Luc Senécal, Marika Sarfati
OBJECTIVES: Dysregulated coagulation cascade has been implicated in development of fibrosis in systemic sclerosis (SSc). Thrombin, a key mediator of the coagulation pathway, has both proinflammatory and procoagulant properties. Here, we evaluated the efficacy of oral dabigatran, a direct thrombin inhibitor, on topoisomerase I dendritic cells (TOPOIA DCs)-induced lung and skin fibrosis, an experimental model of SSc. METHODS: Mice were repeatedly immunized with TOPOIA DCs...
February 8, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/27939673/perinatal-activation-of-the-interleukin-33-pathway-promotes-type-2-immunity-in-the-developing-lung
#16
Ismé M de Kleer, Mirjam Kool, Marjolein J W de Bruijn, Monique Willart, Justine van Moorleghem, Martijn J Schuijs, Maud Plantinga, Rudi Beyaert, Emily Hams, Padraic G Fallon, Hamida Hammad, Rudi W Hendriks, Bart N Lambrecht
Allergic disease originates in early life and polymorphisms in interleukin-33 gene (IL33) and IL1RL1, coding for IL-33R and decoy receptor sST2, confer allergy risk. Early life T helper 2 (Th2) cell skewing and allergy susceptibility are often seen as remnants of feto-maternal symbiosis. Here we report that shortly after birth, innate lymphoid type 2 cells (ILC2s), eosinophils, basophils, and mast cells spontaneously accumulated in developing lungs in an IL-33-dependent manner. During the phase of postnatal lung alveolarization, house dust mite exposure further increased IL-33, which boosted cytokine production in ILC2s and activated CD11b(+) dendritic cells (DCs)...
December 20, 2016: Immunity
https://www.readbyqxmd.com/read/27899395/functional-definition-of-progenitors-versus-mature-endothelial-cells-reveals-key-soxf-dependent-differentiation-process
#17
Jatin Patel, Elke J Seppanen, Mathieu P Rodero, Ho Yi Wong, Prudence Donovan, Zoltan Neufeld, Nicholas M Fisk, Mathias Francois, Kiarash Khosrotehrani
BACKGROUND: During adult life, blood vessel formation is thought to occur via angiogenic processes involving branching from existing vessels. An alternate proposal suggests that neovessels form from endothelial progenitors able to assemble the intimal layers. We here aimed to define vessel-resident endothelial progenitors in vivo in a variety of tissues in physiological and pathological situations such as normal aorta, lungs, and wound healing, tumors, and placenta, as well. METHODS: Based on protein expression levels of common endothelial markers using flow cytometry, 3 subpopulations of endothelial cells could be identified among VE-Cadherin+ and CD45- cells...
February 21, 2017: Circulation
https://www.readbyqxmd.com/read/27865862/impaired-mucus-clearance-exacerbates-allergen-induced-type-2-airway-inflammation-in-juvenile-mice
#18
Benedikt Fritzsching, Matthias Hagner, Lu Dai, Sandra Christochowitz, Raman Agrawal, Charlotte van Bodegom, Simone Schmidt, Jolanthe Schatterny, Stephanie Hirtz, Ryan Brown, Michelle Goritzka, Julia Duerr, Zhe Zhou-Suckow, Marcus A Mall
BACKGROUND: Type 2 airway inflammation plays a central role in the pathogenesis of allergen-induced asthma, but the underlying mechanisms remain poorly understood. Recently, we demonstrated that reduced mucociliary clearance, a characteristic feature of asthma, produces spontaneous type 2 airway inflammation in juvenile β-epithelial Na(+) channel (Scnn1b)-transgenic (Tg) mice. OBJECTIVE: We sought to determine the role of impaired mucus clearance in the pathogenesis of allergen-induced type 2 airway inflammation and identify cellular sources of the signature cytokine IL-13...
November 16, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27826297/lipopolysaccharide-attenuates-induction-of-proallergic-cytokines-thymic-stromal-lymphopoietin-and-interleukin-33-in-respiratory-epithelial-cells-stimulated-with-polyi-c-and-human-parechovirus
#19
Tsang-Hsiung Lin, Chih-Chi Cheng, Hsing-Hao Su, Nan-Chieh Huang, Jih-Jung Chen, Hong-Yo Kang, Tsung-Hsien Chang
Epidemiological studies based on the "hygiene hypothesis" declare that the level of childhood exposure to environmental microbial products is inversely related to the incidence of allergic diseases in later life. Multiple types of immune cell-mediated immune regulation networks support the hygiene hypothesis. Epithelial cells are the first line of response to microbial products in the environment and bridge the innate and adaptive immune systems; however, their role in the hygiene hypothesis is unknown. To demonstrate the hygiene hypothesis in airway epithelial cells, we examined the effect of lipopolysaccharide (LPS; toll-like receptor 4 ligand) on the expression of the proallergic cytokines thymic stromal lymphopoietin (TSLP) and interleukin 33 (IL33) in H292 cells (pulmonary mucoepidermoid carcinoma cells)...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27775548/il-33-regulates-the-iga-microbiota-axis-to-restrain-il-1%C3%AE-dependent-colitis-and-tumorigenesis
#20
Ankit Malik, Deepika Sharma, Qifan Zhu, Rajendra Karki, Clifford S Guy, Peter Vogel, Thirumala-Devi Kanneganti
Inflammatory bowel diseases (IBD) affect over 5 million individuals in the industrialized world, with an increasing incidence rate worldwide. IBD also predisposes affected individuals to development of colorectal cancer, which is a leading cause of cancer-related deaths in adults. Mutations in genes encoding molecules in the IL-33 signaling pathway are associated with colitis and colitis-associated cancer (CAC), but how IL-33 modulates gut homeostasis is unclear. Here, we have shown that Il33-deficient mice are highly susceptible to colitis and CAC...
December 1, 2016: Journal of Clinical Investigation
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