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IL 33

Jung-Ah Lim, Jangsup Moon, Tae-Joon Kim, Jin-Sun Jun, Byeongsu Park, Jung-Ick Byun, Jun-Sang Sunwoo, Kyung-Il Park, Soon-Tae Lee, Keun-Hwa Jung, Ki-Young Jung, Manho Kim, Daejong Jeon, Kon Chu, Sang Kun Lee
Seizure clustering is a common and significant phenomenon in patients with epilepsy. The clustering of spontaneous recurrent seizures (SRSs) in animal models of epilepsy, including mouse pilocarpine models, has been reported. However, most studies have analyzed seizures for a short duration after the induction of status epilepticus (SE). In this study, we investigated the detailed characteristics of seizure clustering in the chronic stage of a mouse pilocarpine-induced epilepsy model for an extended duration by continuous 24/7 video-EEG monitoring...
2018: PloS One
Nazarii Kobyliak, Ludovico Abenavoli, Galyna Mykhalchyshyn, Liudmyla Kononenko, Luigi Boccuto, Dmytro Kyriienko, Oleg Dynnyk
BACKGROUND: Probiotics have a beneficial effect on nonalcoholic fatty liver disease (NAFLD) in animal models. Randomized placebo-controlled trials (RCTs) in NAFLD are still lacking in humans despite a large number of data from animal research. AIM: We performed a double-blind single center RCT of live multi-strain probiotic vs. placebo in type 2 diabetes patients with NAFLD. METHODS: A total of 58 patients met the criteria for inclusion. They were randomly assigned to receive the multi-probiotic "Symbiter" (concentrated biomass of 14 probiotic bacteria genera Bifidobacterium, Lactobacillus, Lactococcus, Propionibacterium) or placebo for 8-weeks administered as a sachet formulation in double-blind treatment...
March 2018: Journal of Gastrointestinal and Liver Diseases: JGLD
Shifeng Wu, Xin Sun, Wei Wu, Dazhi Shi, Tao Jiang
The aim of the study was to investigate the effects of revascularization in treating patients with thromboangiitis obliterans (TAO), to analyze the prognosis of TAO. The treatment group comprised 32 patients with TAO of lower limbs who were selected between March 2012 and March 2017. Patients in the treatment group were treated with revascularization (vascular bypass surgery, catheter-directed thrombolysis and angioplasty, endovascular angioplasty + stening, thromboectomy and/or endarterectomy) + Western medicine...
April 2018: Experimental and Therapeutic Medicine
Gabriella Béke, Zsolt Dajnoki, Anikó Kapitány, Krisztián Gáspár, Barbara Medgyesi, Szilárd Póliska, Zoltán Hendrik, Zoltán Péter, Dániel Törőcsik, Tamás Bíró, Andrea Szegedi
The immunological barrier of the healthy skin is considered to be unified on the whole body surface-however, recent indirect findings have challenged this dogma since microbial and chemical milieu (e.g., sebum, sweat, and pH) exhibit remarkable differences on topographically distinct skin areas. Therefore, in the present study, we performed whole transcriptomic and subsequent pathway analyses to assess differences between sebaceous gland rich (SGR) and sebaceous gland poor (SGP) regions. Here, we provide the first evidence that different skin regions exhibit a characteristic innate and adaptive immune and barrier milieu as we could detect significantly increased chemokine (CCL2, 3, 19, 20, 23, 24) and antimicrobial peptide (S100A7, A8, A9, lipocalin, β-defensin-2) expression, altered barrier (keratin 17, 79) functions, and a non-inflammatory Th17/IL-17 dominance in SGR skin compared to SGP...
2018: Frontiers in Immunology
Corinne Cayrol, Anais Duval, Pauline Schmitt, Stephane Roga, Mylène Camus, Alexandre Stella, Odile Burlet-Schiltz, Anne Gonzalez-de-Peredo, Jean-Philippe Girard
Allergic inflammation has crucial roles in allergic diseases such as asthma. It is therefore important to understand why and how the immune system responds to allergens. Here we found that full-length interleukin 33 (IL-33FL ), an alarmin cytokine with critical roles in type 2 immunity and asthma, functioned as a protease sensor that detected proteolytic activities associated with various environmental allergens across four kingdoms, including fungi, house dust mites, bacteria and pollens. When exposed to allergen proteases, IL-33FL was rapidly cleaved in its central 'sensor' domain, which led to activation of the production of type 2 cytokines in group 2 innate lymphoid cells...
March 19, 2018: Nature Immunology
Xing He, Jun Xie, Yange Wang, Xiaobin Fan, Qin Su, Yue Sun, Nanhang Lei, Dongmei Zhang, Guangping Gao, Weiqing Pan
The type 2 immune response is the central mechanism of disease progression in schistosomiasis, but the signals that induce it after infection remain elusive. Aberrant microRNA (miRNA) expression is a hallmark of human diseases including schistosomiasis, and targeting the deregulated miRNA can mitigate disease outcomes. Here, we demonstrate that efficient and sustained elevation of miR-203-3p in liver tissues, using the highly hepatotropic recombinant adeno-associated virus serotype 8 (rAAV8), protects mice against lethal schistosome infection by alleviating hepatic fibrosis...
March 19, 2018: PLoS Pathogens
Airi Ohsaki, Yuki Miyano, Rei Tanaka, Sei-Ichi Tanuma, Shuji Kojima, Mitsutoshi Tsukimoto
Skin inflammation is caused by excessive production of cytokines and chemokines in response to an external stimulus, such as radiation, but the mechanisms involved are not completely understood. Here, we report a novel mechanism of γ-irradiation-induced IL-6 production mediated by P2Y11 receptors in epidermal cells. After irradiation of HaCaT cells derived from human epidermal keratinocytes with 5 Gy of γ-rays (137 Cs : 0.78 Gy/min), IL-6 production was unchanged at 24 h after γ-irradiation, but was increased at 48 h...
March 16, 2018: Biological & Pharmaceutical Bulletin
Shivani Patel, Palmi Modi, Mahesh Chhabria
Caspase-1 is a key endoprotease responsible for the post-translational processing of pro-inflammatory cytokines IL-1β, 18 & 33. Excessive secretion of IL-1β leads to numerous inflammatory and autoimmune diseases. Thus caspase-1 inhibition would be considered as an important therapeutic strategy for development of newer anti-inflammatory agents. Here we have employed an integrated virtual screening by combining pharmacophore mapping and docking to identify small molecules as caspase-1 inhibitors. The ligand based 3D pharmacophore model was generated having the essential structural features of (HBA, HY & RA) using a data set of 27 compounds...
March 8, 2018: Journal of Molecular Graphics & Modelling
Ceren Cıralı, Emel Ulusoy, Tuncay Kume, Nur Arslan
BACKGROUND: Functional constipation is a clinical problem with an incompletely understood etiology. Functional bowel diseases have been shown to be related to inflammation in many studies in adults. In this study, we aimed to evaluate leukocytes, C-reactive protein, proinflammatory and anti-inflammatory cytokines, and neopterin levels in children with functional constipation. METHODS: Seventy-six children with constipation and 71 healthy controls (mean age 7.12 ± 3...
March 16, 2018: World Journal of Pediatrics: WJP
Szu-Ta Chen, Yen-Hsuan Ni, Chuan-Chun Li, Shing-Hwa Liu
BACKGROUND: Helicobacter pylori infection is associated with iron deficiency (ID) in children. Inflammatory cytokine reactions could influence the consequences of H. pylori infection. Hepcidin is an important regulator in iron homeostasis and could be induced by chronic inflammation. The relationship between hepcidin and cytokine levels in children infected with H. pylori remains controversial. METHODS: Based on serology testing for anti-H. pylori IgG, participants (43 seropositive and 43 seronegative) aged 10-18 years were enrolled...
February 9, 2018: Pediatrics and Neonatology
Shuang-An Li, Wei-Dan Jiang, Lin Feng, Yang Liu, Pei Wu, Jun Jiang, Sheng-Yao Kuang, Ling Tang, Wu-Neng Tang, Yong-An Zhang, Juan Yang, Xu Tang, He-Qun Shi, Xiao-Qiu Zhou
In this study, we investigated the effects of dietary myo-inositol on the intestinal immune barrier function and related signaling pathway in young grass carp (Ctenopharyngodon idella). A total of 540 young grass carp (221.33 ± 0.84 g) were fed six diets containing graded levels of myo-inositol (27.0, 137.9, 286.8, 438.6, 587.7 and 737.3 mg/kg) for 10 weeks. After the growth trial, fish were challenged with Aeromonas hydrophila. The results indicated that compared with the optimal dietary myo-inositol level, myo-inositol deficiency (27...
March 12, 2018: Fish & Shellfish Immunology
Q N Yu, Y B Guo, X Li, C L Li, W P Tan, X L Fan, Z L Qin, D Chen, W P Wen, S G Zheng, Q L Fu
BACKGROUND: Group 2 innate lymphoid cells (ILC2s) were closely associated with asthma. However, there were no perspective studies about the effects of glucocorticoid on ILC2s in asthma patients. Our objective was to perform a perspective study and evaluate the ILC2 activity after glucocorticoid therapy in asthma patients. METHODS: The asthma and asthma with allergic rhinitis patients were treated with glucocorticoid for 3 months. The circulating ILC2 levels were evaluated...
March 15, 2018: Allergy
Dongjiao Wang, Sujun Gao, Jintong Chen, Yinghua Zhao, Yuxue Jiang, Xiao Chu, Xiaohua Wang, Ning Liu, Tianxue Qin, Qing Yi, Ying Yue, Siqing Wang
Interleukin-33 (IL-33) is a potent contributor to antiviral immune responses and antitumor immunity. We recently discovered that IL-33 is overexpressed in dectin-1-activated dendritic cells (DCs). However, mechanisms of dectin-1-induced IL-33 expression in DCs remain elusive. Curdlan, an agonist of dectin-1, was used to mature DCs in this study. We found that dectin-1-induced IL-33 expression in DCs relies on Syk and Raf-1 pathways. By using nuclear factor (NF)-κB inhibitors, we also found that dectin-1-induced IL-33 expression relies on NF-κB signaling...
March 14, 2018: Laboratory Investigation; a Journal of Technical Methods and Pathology
Dimity H Ball, Lamyaa Al-Riyami, William Harnett, Margaret M Harnett
ES-62 is a secreted parasitic worm-derived immunomodulator that exhibits therapeutic potential in allergy by downregulating aberrant MyD88 signalling to normalise the inflammatory phenotype and mast cell responses. IL-33 plays an important role in driving mast cell responses and promoting type-2 allergic inflammation, particularly with respect to asthma, via MyD88-integrated crosstalk amongst the IL-33 receptor (ST2), TLR4 and FcεRI. We have now investigated whether ES-62 targets this pathogenic network by subverting ST2-signalling, specifically by characterising how the functional outcomes of crosstalk amongst ST2, TLR4 and FcεRI are modulated by the worm product in wild type and ST2-deficient mast cells...
March 14, 2018: Scientific Reports
Mei Jiang, Xinghui Liu, Denghai Zhang, Ying Wang, Xiaoxia Hu, Fengxia Xu, Mingming Jin, Fanfan Cao, Limin Xu
BACKGROUND: Acute ischemic stroke (AIS) is the most common type of cerebrovascular disease and is a leading cause of disability and death worldwide. Recently, a study suggested that transformation of microglia from the pro-inflammatory M1 state to the anti-inflammatory and tissue-reparative M2 phenotype may be an effective therapeutic strategy for ischemic stroke. Celastrol, a traditional oriental medicine, may have anti-inflammatory and neuroprotective effects. However, the underlying mechanisms remain unknown...
March 14, 2018: Journal of Neuroinflammation
Danielle M Clancy, Graeme P Sullivan, Hannah B T Moran, Conor M Henry, Emer P Reeves, Noel G McElvaney, Ed C Lavelle, Seamus J Martin
Neutrophil granule proteases are thought to function as anti-microbial effectors, cooperatively hydrolyzing microorganisms within phagosomes, or upon deployment into the extracellular space. However, evidence also suggests that neutrophil proteases play an important role in the coordination and escalation of inflammatory reactions, but how this is achieved has been obscure. IL-1 family cytokines are important initiators of inflammation and are typically released via necrosis but require proteolytic processing for activation...
March 13, 2018: Cell Reports
Duk Hwan Moon, Jae Hyun Jeon, Hee Chul Yang, Young-Il Kim, Jong Yeul Lee, Moon Soo Kim, Jong Mog Lee, Geon-Kook Lee
BACKGROUND: The purpose of this study was to assess the clinicopathological implications of intramural metastasis (IM) in patients with esophageal squamous cell carcinoma (ESCC). METHODS: We retrospectively analyzed 743 patients who underwent esophagectomy. Among these patients, IM was detected in 41 patients (5.5%). The clinicopathological features of IM and its influence on postoperative recurrence were investigated. RESULTS: In total, 710 male patients and 33 female patients with a mean age of 64...
March 10, 2018: Annals of Thoracic Surgery
Woo-In Ryu, Hana Lee, Hyun Cheol Bae, Jiehyun Jeon, Hwa Jung Ryu, Jaehyung Kim, Ji Hyun Kim, Ji Won Son, JaeYoung Kim, Yasutomo Imai, Kiyofumi Yamanishi, Sang Hoon Jeong, Sang Wook Son
BACKGROUND: Tight junctions (TJs) have important roles in skin barrier function. The TJ protein claudin-1 (CLDN1) is decreased in atopic dermatitis (AD). However, little is known about the mechanism of CLDN1 down-expression. OBJECTIVE: To elucidate the effect of IL-33 on CLDN1 expression in keratinocytes. METHODS: Normal human epidermal keratinocytes (NHEKs) and human skin equivalent models (HSEMs) were cultured in vitro in the presence of IL-33...
March 2, 2018: Journal of Dermatological Science
M R Khaitov, A R Gaisina, I P Shilovskiy, V V Smirnov, G V Ramenskaia, A A Nikonova, R M Khaitov
Interleukin-33 (IL-33) belongs to the IL-1 cytokine family and plays an important role in modulating immune system by inducing Th2 immune response via the ST2 membrane receptor. Epithelial cells are the major producers of IL-33. However, IL-33 is also secreted by other cells, e.g., bone marrow cells, dendritic cells, macrophages, and mast cells. IL-33 targets a broad range of cell types bearing the ST2 surface receptor. Many ST2-positive cells, such as Th2 cells, mast cells, basophils, and eosinophils, are involved in the development of allergic bronchial asthma (BA)...
January 2018: Biochemistry. Biokhimii︠a︡
Masakatsu Yamashita, Makoto Kuwahara
Although Bach2 (broad complex-tramtrack-bric a brac and Cap'n'collar homology 2) plays an important role in regulating Th2 cell differentiation and type-2 immune responses, the underlying molecular mechanisms remain unclear. Our current studies demonstrate that Bach2 associates with Batf (basic leucine zipper transcription factor ATF-like) family transcription factors and binds to the regulatory regions of the Th2 cytokine gene loci. The Bach2-Batf complex antagonizes the recruitment of the interferon regulatory factor 4 (Irf4)-containing Batf complex to activator protein 1 (AP-1) motifs in the Th2 cytokine gene locus and suppresses Th2 cytokine production and/or Th2 cell differentiation...
February 24, 2018: International Immunology
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