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https://www.readbyqxmd.com/read/27921309/hypoxia-inducible-factor-1%C3%AE-induced-interleukin-33-expression-in-intestinal-epithelia-contributes-to-mucosal-homeostasis-in-inflammatory-bowel-disease
#1
M Sun, C He, W Wu, G Zhou, F Liu, Y Cong, Z Liu
Intestinal epithelial cells (IECs), an important barrier to gut microbiota, are subject to low oxygen tension, particularly during intestinal inflammation. Hypoxia inducible factor-1α (HIF-1α) is expressed highly in the inflamed mucosa of inflammatory bowel disease (IBD) and functions as a key regulator in maintenance of intestinal homeostasis. However, how IEC-derived HIF-1α regulates intestinal immune responses in IBD is still not understood completely. We report here that the expression of HIF-1α and IL-33 was increased significantly in the inflamed mucosa of IBD patients as well as mice with colitis induced by dextran sulphate sodium (DSS)...
November 7, 2016: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/27918564/interleukin-33-induced-expression-of-pibf1-by-decidual-b-cells-protects-against-preterm-labor
#2
Bihui Huang, Azure N Faucette, Michael D Pawlitz, Bo Pei, Joshua W Goyert, Jordan Zheng Zhou, Nadim G El-Hage, Jie Deng, Jason Lin, Fayi Yao, Robert S Dewar, Japnam S Jassal, Maxwell L Sandberg, Jing Dai, Montserrat Cols, Cong Shen, Lisa A Polin, Ronald A Nichols, Theodore B Jones, Martin H Bluth, Karoline S Puder, Bernard Gonik, Nihar R Nayak, Elizabeth Puscheck, Wei-Zen Wei, Andrea Cerutti, Marco Colonna, Kang Chen
Preterm birth (PTB) is a leading cause of neonatal death worldwide. Intrauterine and systemic infection and inflammation cause 30-40% of spontaneous preterm labor (PTL), which precedes PTB. Although antibody production is a major immune defense mechanism against infection, and B cell dysfunction has been implicated in pregnancy complications associated with PTL, the functions of B cells in pregnancy are not well known. We found that choriodecidua of women undergoing spontaneous PTL harbored functionally altered B cell populations...
December 5, 2016: Nature Medicine
https://www.readbyqxmd.com/read/27917896/astragaloside-iv-ameliorates-allergic-inflammation-by-inhibiting-key-initiating-factors-in-the-initial-stage-of-sensitization
#3
Kai-Fan Bao, Xi Yu, Xiao Wei, Li-Li Gui, Hai-Liang Liu, Xiao-Yu Wang, Yu Tao, Guo-Rong Jiang, Min Hong
To illuminate the anti-allergy mechanism of astragaloside IV (AS-IV), we assessed its effects in a murine model of allergic contact dermatitis (ACD). AS-IV administered in the sensitization phase, rather than in the elicitation phase, dramatically alleviated the symptoms of allergic inflammation. We hypothesized that AS-IV exerts its anti-allergy effects by regulating the production of key pro-allergic cytokines based on the fact that interleukin (IL)-33 and thymic stromal lymphopoietin (TSLP) levels increase significantly in the initial stage of the sensitization phase...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27909880/il-9-producing-cells-in-the-development-of-ige-mediated-food-allergy
#4
REVIEW
Dana Shik, Sunil Tomar, Jee-Boong Lee, Chun-Yu Chen, Andrew Smith, Yui-Hsi Wang
Food allergy is a harmful immune reaction driven by uncontrolled type 2 immune responses. Considerable evidence demonstrates the key roles of mast cells, IgE, and TH2 cytokines in mediating food allergy. However, this evidence provides limited insight into why only some, rather than all, food allergic individuals are prone to develop life-threatening anaphylaxis. Clinical observations suggest that patients sensitized to food through the skin early in life may later develop severe food allergies. Aberrant epidermal thymic stromal lymphopoietin and interleukin (IL) 33 production and genetic predisposition can initiate an allergic immune response mediated by dendritic cells and CD4(+)TH2 cells in inflamed skin...
December 1, 2016: Seminars in Immunopathology
https://www.readbyqxmd.com/read/27900334/serum-levels-of-soluble-st2-and-il-10-are-associated-with-disease-severity-in-patients-with-iga-nephropathy
#5
Zhihui Zhang, Haifeng Wang, Li Zhang, Rebecca Crew, Nan Zhang, Xiaolei Liu, Yanfang Jiang
Background. The IL-33/ST2 axis is involved in humoral immune responses. Method. The concentrations of sera IL-33 and sST2 in 74 patients and 34 healthy controls (HC) were measured by ELISA. Clinical and laboratory data were examined. The potential association between sera IL-33 and sST2 and the clinical parameters in IgAN patients were analyzed. Results. No difference was discovered in IL-33 concentrations between IgAN patients and HCs; however, the sST2 were significantly higher in each stage of IgAN progression than in the HC...
2016: Journal of Immunology Research
https://www.readbyqxmd.com/read/27885166/the-role-of-interleukin-33-in-chronic-rhinosinusitis
#6
Dong-Kyu Kim, Hong Ryul Jin, Kyoung Mi Eun, Ji-Hun Mo, Seong H Cho, Sohee Oh, David Cho, Dae Woo Kim
RATIONALE: Interleukin (IL)-33, a new member of the IL-1 family, is constitutively expressed in epithelial tissues and lymphoid organs and plays an important role in the pathogenesis of allergic disease. However, the role of IL-33 in chronic rhinosinusitis with nasal polyps (CRSwNP) remains unclear. OBJECTIVE: To investigate the role of IL-33 in the pathophysiology of CRSwNP. METHODS: We investigated IL-33 expression and its cellular origins in the nasal polyps (NPs) of human subjects by immunohistochemistry (IHC), quantitative reverse transcription PCR (qRT-PCR), and multiplex cytokine assays...
November 24, 2016: Thorax
https://www.readbyqxmd.com/read/27882929/soluble-il-33-receptor-sst2-inhibits-colorectal-cancer-malignant-growth-by-modifying-the-tumour-microenvironment
#7
Miho Akimoto, Riruke Maruyama, Hiroyuki Takamaru, Takahiro Ochiya, Keizo Takenaga
Interleukin-33 (IL-33) was recently shown to be involved in the inflammatory tumour microenvironment and the progression of colorectal cancer (CRC). We report here that the expression level of sST2, a soluble form of the IL-33 receptor (ST2L), is inversely associated with the malignant growth of CRC. sST2 is downregulated in high-metastatic cells compared with low-metastatic human and mouse CRC cells. Knockdown of sST2 in low-metastatic cells enhances tumour growth, metastasis and tumour angiogenesis, whereas its overexpression in high-metastatic cells suppresses these processes...
November 24, 2016: Nature Communications
https://www.readbyqxmd.com/read/27878685/the-role-of-il-33-on-lps-induced-acute-lung-injury-in-mice
#8
Yaping Zhang, Ran Lv, Xuming Hu, Li Jiang, Dongju Xiao, Yv Sun, Jinning Zhao, Qi Bao, Junran Xie
The objective of the study is to investigate the role and specific molecular mechanism of interleukin-33 (IL-33) acted on acute lung injury (ALI) induced by lipopolysaccharide (LPS). C57BL/6 mice intratracheally instilled LPS to induce ALI model. The mice were randomly divided into three groups: the sham operation group (Sham), ALI group (ALI), and pretreatment with IL-33 of ALI group (IL-33). By observing the survival rate, inflammatory cytokines in bronchoalveolar lavage fluid (BALF), myeloperoxidase (MPO) levels in lung tissue, lung histopathological examination, pulmonary capillary leakage, lung wet/dry (W/D) weight ratio, fibrosis levels in lung tissue, and associated pathways changes among the different groups, comparing to explore the role of IL-33 pretreatment on ALI mice and the possible molecular mechanisms...
November 23, 2016: Inflammation
https://www.readbyqxmd.com/read/27876627/il-33-fine-tunes-mast-cell-degranulation-and-chemokine-production-at-the-single-cell-level
#9
Régis Joulia, Fatima-Ezzahra L'Faqihi, Salvatore Valitutti, Eric Espinosa
BACKGROUND: Mast cells are versatile key components of allergy and inflammation, known to respond to both innate and adaptive immunological stimuli. However the response of individual mast cells to cumulative stimuli remains poorly understood. OBJECTIVES: To dissect mast cell responses at the single-cell level and their potentiation by IL-33. METHODS: We monitored mast cell degranulation in real time by exploiting the capacity of fluorochrome-labeled avidin to stain degranulating cells...
November 19, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27872212/a-proinflammatory-role-of-type-2-innate-lymphoid-cells-in-murine-immune-mediated-hepatitis
#10
Katrin Neumann, Khalil Karimi, Jana Meiners, Ruth Voetlause, Silja Steinmann, Werner Dammermann, Stefan Lüth, Farahnaz Asghari, Claudia Wegscheid, Andrea K Horst, Gisa Tiegs
Type 2 innate lymphoid cells (ILC2) mediate inflammatory immune responses in the context of diseases triggered by the alarmin IL-33. In recent years, IL-33 has been implicated in the pathogenesis of immune-mediated liver diseases. However, the immunoregulatory function of ILC2s in the inflamed liver remains elusive. Using the murine model of Con A-induced immune-mediated hepatitis, we showed that selective expansion of ILC2s in the liver was associated with highly elevated hepatic IL-33 expression, severe liver inflammation, and infiltration of eosinophils...
November 21, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27870664/targeting-il-25-as-a-novel-therapy-in-chronic-rhinosinusitis-with-nasal-polyps
#11
Mingyu Lee, Dae Woo Kim, Hyun-Woo Shin
PURPOSE OF REVIEW: Chronic rhinosinusitis with nasal polyps (CRSwNPs) is a heterogeneous inflammatory disorder with a poorly understood pathophysiology. Recent findings show that epithelial-derived cytokines, including thymic stromal lymphopoietin, IL-33, and IL-25, can exacerbate Th2 immune responses, ultimately leading to recalcitrant chronic rhinosinusitis and nasal polyp. Although IL-25 is increased in CRSwNP, the targeting of IL-25 as a therapeutic strategy remains largely unexplored...
November 18, 2016: Current Opinion in Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27868148/the-alarmins-hmbg1and-interleukin-33-downregulate-the-structural-skin-barrier
#12
Uffe Nygaard, Ellen H van den Bogaard, Hanna Niehues, Malene Hvid, Mette Deleuran, Claus Johansen, Christian Vestergaard
The epidermal-derived "alarmins" high-mobility group box 1 (HMGB1) protein and interleukin-33 (IL-33) are upregulated in patients with atopic dermatitis. However, their capacity as pro-inflammatory cytokines and their derived effects on skin barrier regulation are poorly elucidated. We investigated the impact of HMGB1 and IL-33 on gene transcription, protein expression and epidermal differentiation across 3 distinct keratinocyte in vitro models. Primary keratinocytes from healthy donors were used in submerged monolayer cultures, 3D human epidermis equivalents and 3D human skin equivalents...
October 14, 2016: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/27867629/a-novel-function-of-il-33-suppression-of-innate-antiviral-immunity
#13
COMMENT
Akio Matsuda
No abstract text is available yet for this article.
October 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/27864363/induction-of-airway-allergic-inflammation-by-hypothiocyanite-via-epithelial-cells
#14
Shoichi Suzuki, Masahiro Ogawa, Shoichiro Ohta, Satoshi Nunomura, Yasuhiro Nanri, Hiroshi Shiraishi, Yasutaka Mitamura, Tomohito Yoshihara, James J Lee, Kenji Izuhara
Hypothiocyanite (OSCN(-)) serves as a potent innate defense system against microbes in the lungs. OSCN(-) is generated by the catalysis of peroxidases using thiocyanate transported via several anion transporters, including pendrin/SLC26A4 and hydrogen peroxide (H2O2) generated by Duox1 and Duox2. We previously demonstrated that expression of pendrin, peroxidases, and Duox1/Duox2 is upregulated in bronchial asthma patients and/or asthma model mice and that these molecules are important in accelerating airway inflammation...
November 18, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27864285/il-23-secreted-by-bronchial-epithelial-cells-contributes-allergic-sensitization-in-asthma-model
#15
Hyun Seung Lee, Da-Eun Park, Ji-Won Lee, Yuna Chang, Hye Young Kim, Woo-Jung Song, Hye-Ryun Kang, Heung-Woo Park, Yoon-Seok Chang, Sang-Heon Cho
BACKGROUND: IL-23 has been postulated to be a critical mediator contributing to various inflammatory diseases. Dermatophagoides pteronyssinus (Der p) is one of the most common inhalant allergens. However, the role of IL-23 in Der p-induced mouse asthma model is not well understood, particularly with regard to the development of allergic sensitization in the airways. OBJECTIVE: To evaluate roles of IL-23 in Der p-sensitization and asthma development. METHODS: BALB/c mice were repeatedly administered with Der p intra-nasally to develop Der p-allergic sensitization and asthma...
November 18, 2016: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/27864150/effect-of-malondialdehyde-on-the-ovalbumin-structure-and-its-interactions-with-t84-epithelial-cells
#16
Jasna Nikolić, Andrijana Nešić, Milena Čavić, Neda Đorđević, Uroš Anđelković, Marina Atanasković-Marković, Branko Drakulić, Marija Gavrović-Jankulović
BACKGROUND: Protein oxidation can occur as a consequence of lipid peroxidation during food processing. The aim of this work was to explore the effect of malondialdehyde (MDA) modification of ovalbumin (OVA) on its interaction with T84 intestinal cells. METHODS: Molecular dynamics simulation was employed for the prediction of MDA modification in the OVA, while introduced structural changes were evaluated by measurement of carbonyl group content, fluorescence spectra, MS/MS analysis, and IgE reactivity...
November 15, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27862491/alarmins-and-central-nervous-system-inflammation-in-hiv-associated-neurological-disorders
#17
M-L Gougeon
In the era of highly active antiretroviral therapy (HAART), HIV-1-associated neurocognitive disorders (HAND) persist in infected individuals with adequate immunological and virological status. Risk factors for cognitive impairment include hepatitis C virus co-infection, host genetic factors predisposing to HAND, the early establishment of the virus in the CNS and its persistence under HAART; thus, the CNS is an important reservoir for HIV. Microglial cells are permissive to HIV-1, and NLRP3 inflammasome-associated genes were found expressed in brains of HIV-1-infected persons, contributing to brain disease...
November 16, 2016: Journal of Internal Medicine
https://www.readbyqxmd.com/read/27862176/inflammasomes-hormesis-and-antioxidants-in-neuroinflammation-role-of-nrlp3-in-alzheimer-disease
#18
REVIEW
Manuela Pennisi, Rosalia Crupi, Rosanna Di Paola, Maria Laura Ontario, Rita Bella, Edward J Calabrese, Roberto Crea, Salvatore Cuzzocrea, Vittorio Calabrese
Alzheimer disease (AD) is a progressive neurodegenerative disorder leading to cognitive decline, neuropsychiatric symptoms, disability, caregiver burden, and premature death. It represents the most prevalent cause of dementia, and its incidence rates exponentially increase with increasing age. The number of Americans living with AD is rapidly increasing. An estimated 5.4 million Americans of all ages have AD in 2016. One in nine people aged 65 and older has AD, and by midcentury, someone in the United States will develop the disease every 33 sec...
November 8, 2016: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/27861815/intestinal-helminth-infection-induces-highly-functional-resident-memory-cd4-t-cells-in-mice
#19
Svenja Steinfelder, Sebastian Rausch, Dörte Michael, Anja A Kühl, Susanne Hartmann
Immunity to intestinal nematodes requires CD4⁺ Th2-cell responses, including IL-4 and IL-13 production. Chronic infection with intestinal nematodes leads to downregulation of these responses, and few functional T helper (Th) 2 cells are detected in secondary lymphoid organs in the chronic phase or after abrogation of infection. Here, we show with a natural murine infection with Heligmosomoides polygyrus that highly functional memory Th2 cells persist in the lamina propria and in addition in the peritoneal cavity (PC) after abrogation of infection...
November 10, 2016: European Journal of Immunology
https://www.readbyqxmd.com/read/27853507/developing-food-allergy-a-potential-immunologic-pathway-linking-skin-barrier-to-gut
#20
REVIEW
Yui-Hsi Wang
Immunoglobulin E (IgE)-mediated food allergy is an adverse reaction to foods and is driven by uncontrolled type-2 immune responses. Current knowledge cannot explain why only some individuals among those with food allergy are prone to develop life-threatening anaphylaxis. It is increasingly evident that the immunologic mechanisms involved in developing IgE-mediated food allergy are far more complex than allergic sensitization. Clinical observations suggest that patients who develop severe allergic reactions to food are often sensitized through the skin in early infancy...
2016: F1000Research
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