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https://www.readbyqxmd.com/read/28543436/prenatal-environmental-tobacco-smoke-exposure-increases-allergic-asthma-risk-with-methylation-changes-in-mice
#1
Sonja Christensen, Zeina Jaffar, Elizabeth Cole, Virginia Porter, Maria Ferrini, Britten Postma, Kent E Pinkerton, Mihi Yang, Yang Jee Kim, Luke Montrose, Kevan Roberts, Andrij Holian, Yoon Hee Cho
Allergic asthma remains an inadequately understood disease. In utero exposure to environmental tobacco smoke (ETS) has been identified as an environmental exposure that can increase an individual's asthma risk. To improve our understanding of asthma onset and development, we examined the effect of in utero ETS exposure on allergic disease susceptibility in an asthmatic phenotype using a house dust mite (HDM) allergen-induced murine model. Pregnant C57BL/6 mice were exposed to either filtered air or ETS during gestation, and their offspring were further exposed to HDM at 6-7 weeks old to induce allergic inflammation...
May 25, 2017: Environmental and Molecular Mutagenesis
https://www.readbyqxmd.com/read/28543283/targeting-pp2a-and-proteasome-activity-ameliorates-features-of-allergic-airway-disease-in-mice
#2
Prema M Nair, Malcolm R Starkey, Tatt Jhong Haw, Gang Liu, Jay C Horvat, Jonathan C Morris, Nikki M Verrills, Andrew R Clark, Alaina J Ammit, Philip M Hansbro
BACKGROUND: Asthma is an allergic airway disease (AAD) caused by aberrant immune responses to allergens. Protein phosphatase-2A (PP2A) is an abundant serine/threonine phosphatase with anti-inflammatory activity. The ubiquitin proteasome system (UPS) controls many cellular processes, including the initiation of inflammatory responses by protein degradation. We assessed if enhancing PP2A activity with Fingolimod (FTY720) or 2-amino-4-(4-(heptyloxy) phenyl)-2-methylbutan-1-ol (AAL(S) ), or inhibiting proteasome activity with Bortezomib (BORT) could suppress experimental AAD...
May 24, 2017: Allergy
https://www.readbyqxmd.com/read/28541554/activation-of-group-2-innate-lymphoid-cells-exacerbates-and-confers-corticosteroid-resistance-to-mouse-nasal-type-2-inflammation
#3
Taiyo Morikawa, Ayumi Fukuoka, Kazufumi Matsushita, Koubun Yasuda, Naruhito Iwasaki, Shoko Akasaki, Shigeharu Fujieda, Tomohiro Yoshimoto
Both Th2 cells and group 2 innate lymphoid cells (ILC2s) contribute to allergic diseases. However, their exact role and relationship in nasal allergic disorders is unclear. In this study, we investigated the cooperation of Th2 cells and ILC2s in a mouse model of nasal allergic disorder. To differentially activate Th2 cells and/or ILC2s in nasal mucosa, mice were intranasally administered ovalbumin (OVA) antigen, papain, an ILC2-activator, or both for 2 weeks. Epithelial thickness and number of eosinophils in the nasal mucosa were evaluated at 24 hours after the final challenge...
May 25, 2017: International Immunology
https://www.readbyqxmd.com/read/28533995/crohn-s-disease-and-ulcerative-colitis-show-unique-cytokine-profiles
#4
Zoltan H Nemeth, Dorian A Bogdanovski, Patricia Barratt-Stopper, Samantha R Paglinco, Luca Antonioli, Rolando H Rolandelli
INTRODUCTION: Networks of cytokines have been implicated in both forms of inflammatory bowel disease (IBD): Crohn's disease (CD) and ulcerative colitis (UC). While CD has associated with T-helper type 1 (Th1) immune responses, UC shows Th2 patterns. Recent studies reported that the inflamed intestinal regions in both CD and UC are significantly infiltrated with a newly described set of T helper, the Th17 cells. These cells have unique cytokine responses. These findings prompted us to further explore the cytokine profiles of CD and UC with a special focus on the Th2 and Th17 related mediators...
April 19, 2017: Curēus
https://www.readbyqxmd.com/read/28533556/evolution-of-th2-responses-characterization-of-il-4-13-in-sea-bass-dicentrarchus-labrax-l-and-studies-of-expression-and-biological-activity
#5
Valentina Stocchi, Tiehui Wang, Elisa Randelli, Massimo Mazzini, Marco Gerdol, Alberto Pallavicini, Chris J Secombes, Giuseppe Scapigliati, Francesco Buonocore
Th2 immunity is a primary host defence against metazoan pathogens and two of the important cytokines involved in this immune response in mammals are IL-4 and IL-13. Recently the origin and evolution of Th2 immune responses have been investigated in fish where a molecule with relatedness to both IL-4 and IL-13 is present, termed IL-4/13. Different IL-4/13 paralogues (IL-4/13 A and IL-4/13B) exist in teleost fish. In this paper, we have focused on the IL-4/13 isoforms found in the European sea bass (Dicentrarchus labrax L...
May 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28532656/the-il-33-st2-axis-is-crucial-in-type-2-airway-responses-induced-by-the-staphylococcus-aureus-protease-spld
#6
Andrea R Teufelberger, Maria Nordengrün, Harald Braun, Tania Maes, Katrien De Grove, Gabriele Holtappels, Clara O'Brien, Sharen Provoost, Hamida Hammad, Amanda Gonçalves, Rudi Beyaert, Wim Declercq, Peter Vandenabeele, Dmitri V Krysko, Barbara M Bröker, Claus Bachert, Olga Krysko
BACKGROUND: Chronic airway inflammatory diseases such as chronic rhinosinusitis with nasal polyps and asthma showed increased nasal Staphylococcus aureus (S. aureus) colonization. Serine protease like protein D (SplD) and other closely related proteases secreted by S. aureus have recently been identified as inducers of allergic asthma in humans and mice but their mechanism of action is largely unknown. OBJECTIVE: We investigated the role of recombinant SplD in driving Th2-biased responses and IgE formation in a murine model of allergic asthma...
May 19, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28530223/tweak-mediates-inflammation-in-experimental-atopic-dermatitis-and-psoriasis
#7
Daniel Sidler, Ping Wu, Rana Herro, Meike Claus, Dennis Wolf, Yuko Kawakami, Toshiaki Kawakami, Linda Burkly, Michael Croft
Atopic dermatitis (AD) and psoriasis are driven by alternate type 2 and type 17 immune responses, but some proteins might be critical to both diseases. Here we show that a deficiency of the TNF superfamily molecule TWEAK (TNFSF12) in mice results in defective maintenance of AD-specific T helper type 2 (Th2) and psoriasis-specific Th17 cells in the skin, and impaired expression of disease-characteristic chemokines and cytokines, such as CCL17 and TSLP in AD, and CCL20 and IL-19 in psoriasis. The TWEAK receptor, Fn14, is upregulated in keratinocytes and dermal fibroblasts, and TWEAK induces these cytokines and chemokines alone and in synergy with the signature T helper cytokines of either disease, IL-13 and IL-17...
May 22, 2017: Nature Communications
https://www.readbyqxmd.com/read/28529481/topical-ophthalmic-formulation-of-trichostatin-a-and-surr9-c84a-for-quick-recovery-post-alkali-burn-of-corneal-haze
#8
Kislay Roy, Chun Hei Antonio Cheung, Rupinder K Kanwar, Rajat Sandhir, Jagat R Kanwar
Alkali burn injury is a true ocular emergency of the conjunctiva and cornea that requires immediate precision. Lack of an immediate therapy can lead to a substantial damage in the ocular surface and anterior segment further causing visual impairment and disfigurement. We explored the regenerative capability of dominant negative survivin protein (SurR9-C84A) and histone deacetylase inhibitor trichostatin-A (TSA) in vivo, in a rat alkali burn model. A topical insult in rat eyes with NaOH led to degradation of the conjunctival and corneal epithelium...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28528200/sputum-transcriptomics-reveal-up-regulation-of-il-1-receptor-family-members-in-severe-asthma
#9
Christos Rossios, Stelios Pavlidis, Uruj Hoda, Chih-Hsi Kuo, Coen Wiegman, Kirsty Russell, Kai Sun, Matthew J Loza, Frederic Baribaud, Andrew L Durham, Oluwaseun Ojo, Rene Lutter, Anthony Rowe, Aruna Bansal, Charles Auffray, Ana Sousa, Julie Corfield, Ratko Djukanovic, Yike Guo, Peter J Sterk, Kian Fan Chung, Ian M Adcock
BACKGROUND: Sputum analysis in asthma is used to define airway inflammatory processes and may guide therapy. OBJECTIVE: To determine differential gene and protein expression in sputum samples from patients with severe asthma (SA) compared to mild-moderate non-smoking asthmatics (MMA). METHODS: Induced sputum was obtained from non-smoking SA (SAn), smokers/ex-smokers with SA (SAsm), MMA and healthy non-smoking controls. Differential cell counts, microarray analysis of cell pellets and SOMAscan analysis of sputum analytes was performed...
May 17, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28527688/clinical-development-of-a-var2csa-based-placental-malaria-vaccine-pamvac-quantifying-vaccine-antigen-specific-memory-b-t-cell-activity-in-beninese-primigravidae
#10
Komi Gbédandé, Nadine Fievet, Firmine Viwami, Sem Ezinmegnon, Saadou Issifou, Jean-Philippe Chippaux, Yannelle Dossou, Kabirou Moutairou, Achille Massougbodji, Nicaise Ndam, Willem Adriaan de Jongh, T Max M Søgaard, Ali Salanti, Morten A Nielsen, Meral Esen, Benjamin Mordmüller, Philippe Deloron, Adrian J F Luty
BACKGROUND: The antigen VAR2CSA plays a pivotal role in the pathophysiology of pregnancy-associated malaria (PAM) caused by Plasmodium falciparum. A VAR2CSA-based vaccine candidate, PAMVAC, is under development by an EU-funded multi-country consortium (PlacMalVac project). As part of PAMVAC's clinical development, we quantified naturally acquired vaccine antigen-specific memory B and T cell responses in Beninese primigravidae recruited at the beginning of pregnancy and followed up to delivery and beyond...
May 17, 2017: Vaccine
https://www.readbyqxmd.com/read/28524044/expression-of-keratin-1-keratin-10-desmoglein-1-and-desmocollin-1-in-the-epidermis-possible-downregulation-by-interleukin-4-and-interleukin-13-in-atopic-dermatitis
#11
Ami Totsuka, Miyuki Omori-Miyake, Makoto Kawashima, Junji Yagi, Yuichiro Tsunemi
In the pathogenesis of atopic dermatitis (AD), skin barrier dysfunction and T-helper (Th) type 2 immune reactions play important roles. Alterations in the stratum spinosum of AD have not been studied in much detail. In this study, we investigated the changes of structural proteins and adhesion molecules residing in the stratum spinosum of AD lesional skin, and whether Th2 cytokines including interleukin (IL)-4 and IL-13 alter the expression of these proteins. Skin samples were collected from patients with AD and from healthy controls...
May 19, 2017: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/28522569/brain-derived-neurotrophic-factor-and-airway-fibrosis-in-asthma
#12
Michelle R Freeman, Venkatachalem Sathish, Logan J Manlove, Shengyu Wang, Rodney D Britt, Michael A Thompson, Christina M Pabelick, Y S Prakash
Airway remodeling in asthma driven by inflammation involves proliferation of epithelial cells and airway smooth muscle (ASM), as well as enhanced extracellular matrix (ECM) generation and deposition, i.e. fibrosis. Accordingly, understanding pro-fibrotic mechanisms is important for developing novel therapeutic strategies in asthma. Recent studies, including our own, have suggested a role for locally-produced growth factors such as brain-derived neurotrophic factor (BDNF) in mediating and modulating inflammation effects...
May 18, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28518224/t-helper-1-related-molecules-as-well-as-il-15-are-hyperexpressed-in-the-skin-lesions-of-patients-with-pyoderma-gangrenosum
#13
Emiliano Antiga, Roberto Maglie, Walter Volpi, Beatrice Bianchi, Emilio Berti, Angelo Valerio Marzano, Marzia Caproni
Pyoderma gangrenosum (PG) is a rare, immune-mediated skin disease classified into the group of neutrophilic dermatoses. Whether a number of studies confirmed the central role of innate immunity, only few studies investigated the possible contributing role of acquired immunity. In particular, no reports about Th1 and Th2 cells are available yet. Therefore, 15 patients with PG, 5 with Sweet's syndrome (SS) and 9 skin specimens from healthy controls (HC) were investigated, evaluating the expression of Th1-related markers IL-12, IFN-γ, CXCR3, CCR5, of the Th2 related molecules IL-4, IL-5, IL-13 and CCR3, of the co-stimulatory axis CD40/CD40L, of IL-15 and the NK cell marker CD56 in skin lesions by immunohistochemistry...
May 18, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28515227/frontline-science-eosinophil-deficient-mbp-1-and-epx-double-knockout-mice-link-pulmonary-remodeling-and-airways-dysfunction-with-type-2-inflammation
#14
Sergei I Ochkur, Alfred D Doyle, Elizabeth A Jacobsen, William E LeSuer, Wen Li, Cheryl A Protheroe, Katie R Zellner, Dana Colbert, HuaHao H Shen, Charlie G Irvin, James J Lee, Nancy A Lee
Eosinophils and the release of cationic granule proteins have long been implicated in the development of the type 2-induced pathologies linked with respiratory inflammation. Paradoxically, the ablation of the two genes encoding the most abundant of these granule proteins, major basic protein-1 (MBP-1) and eosinophil peroxidase (EPX), results in a near collapse of eosinophilopoiesis. The specificity of this lineage ablation and the magnitude of the induced eosinopenia provide a unique opportunity to clarify the importance of eosinophils in acute and chronic inflammatory settings, as well as to identify potential mechanism(s) of action linked with pulmonary eosinophils in those settings...
May 17, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28514691/mast-cells-are-crucial-for-induction-of-group-2-innate-lymphoid-cells-and-clearance-of-helminth-infections
#15
Chikako Shimokawa, Takashi Kanaya, Masami Hachisuka, Kenji Ishiwata, Hajime Hisaeda, Yosuke Kurashima, Hiroshi Kiyono, Tomohiro Yoshimoto, Tsuneyasu Kaisho, Hiroshi Ohno
Mast cells are important for eradication of intestinal nematodes; however, their precise mechanisms of action have remained elusive, especially in the early phase of infection. We found that Spi-B-deficient mice had increased numbers of mast cells and rapidly expelled the Heligmosomoides polygyrus (Hp) nematode. This was accompanied by induction of interleukin-13 (IL-13)-producing group 2 innate lymphoid cells (ILC2) and goblet cell hyperplasia. Immediately after Hp infection, mast cells were rapidly activated to produce IL-33 in response to ATP released from apoptotic intestinal epithelial cells...
May 16, 2017: Immunity
https://www.readbyqxmd.com/read/28514653/the-presence-of-interleukin-13-at-pancreatic-adm-panin-lesions-alters-macrophage-populations-and-mediates-pancreatic-tumorigenesis
#16
Geou-Yarh Liou, Ligia Bastea, Alicia Fleming, Heike Döppler, Brandy H Edenfield, David W Dawson, Lizhi Zhang, Nabeel Bardeesy, Peter Storz
The contributions of the innate immune system to the development of pancreatic cancer are still ill defined. Inflammatory macrophages can initiate metaplasia of pancreatic acinar cells to a duct-like phenotype (acinar-to-ductal metaplasia [ADM]), which then gives rise to pancreatic intraepithelial neoplasia (PanIN) when oncogenic KRas is present. However, it remains unclear when and how this inflammatory macrophage population is replaced by tumor-promoting macrophages. Here, we demonstrate the presence of interleukin-13 (IL-13), which can convert inflammatory into Ym1+ alternatively activated macrophages, at ADM/PanIN lesions...
May 16, 2017: Cell Reports
https://www.readbyqxmd.com/read/28514189/effects-of-vaccination-with-the-c-strain-vaccine-on-immune-cells-and-cytokines-of-pigs-against-classical-swine-fever-virus
#17
Lu Xu, Xue-Zheng Fan, Qi-Zu Zhao, Zheng-Xing Zhang, Kai Chen, Yi-Bao Ning, Qian-Yi Zhang, Xing-Qi Zou, Yuan-Yuan Zhu, Cui Li, Yu-Jie Zhang, Qin Wang
The attenuated C-strain vaccine against classical swine fever virus (CSFV) is one of the safest and most effective attenuated vaccines. However, little is known of the host immune response after vaccination with the C-strain vaccine. Blood samples from vaccinated pigs were collected to evaluate the number of immune cells, the level of specific CSFV antibody, and related cytokines induced by the vaccination of C-strain vaccine. The C-strain nucleic acid was gradually removed and specific antibody to vaccine kept increasing; the amount of the lymphocyte, Tc cell, and Th cell increased; some inflammatory cytokines such as interleukin (IL)-1 and tumor necrosis factor-α mainly showed downregulated trends, but IL-6 and IL-8 were upregulated greatly; IL-2, IL-4, IL-5, IL-12p40, IL-13, interferon (IFN)-I, and Toll-like receptors (TLRs) kept high expression level after 28 days postvaccination (dpv); IFN-γ was upregulated slightly at 5 and 9 dpv, respectively...
May 17, 2017: Viral Immunology
https://www.readbyqxmd.com/read/28512644/analysis-of-serum-cytokines-and-single-nucleotide-polymorphisms-of-sod1-sod2-and-cat-in-erysipelas-patients
#18
Charles C Emene, Irina E Kravchenko, Gulnaz I Aibatova, Albert A Rizvanov
Increased free radical production had been documented in group A (β-hemolytic) streptococcus infection cases. Comparing 71 erysipelas patients to 55 age-matched healthy individuals, we sought for CAT, SOD1, and SOD2 single polymorphism mutation (SNPs) interactions with erysipelas' predisposition and serum cytokine levels in the acute and recovery phases of erysipelas infection. Whereas female patients had a higher predisposition to erysipelas, male patients were prone to having a facial localization of the infection...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28510479/increased-expression-of-p22phox-mediates-airway-hyperresponsiveness-in-an-experimental-model-of-asthma
#19
Chandran Nagaraj, Hans Michael Haitchi, Akos Heinemann, Peter Howarth, Andrea Olschewski, Leigh M Marsh
AIM: Chronic airway diseases such as asthma are associated with increased production of reactive oxygen species (ROS) and oxidative stress. Endogenous NADPH oxidases are a major source of superoxide in lung, but their underlying role in asthma pathology is poorly understood. We sought to characterize the involvement of NADPH oxidase in allergic asthma by studying the role of CYBA (p22phox) in human asthma and murine house dust mite (HDM)-induced allergic airway inflammation. RESULTS: Increased expression and localisation of p22-PHOX was observed in biopsies of asthmatic patients...
May 16, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28507952/comparison-of-growth-and-the-cytokines-induced-by-pathogenic-yersinia-enterocolitica-bio-serotypes-3-o-3-and-2-o-9
#20
Haoshu Yang, Wenpeng Gu, Haiyan Qiu, Guixiang Sun, Junrong Liang, Kewei Li, Yuchun Xiao, Ran Duan, Huaiqi Jing, Xin Wang
Pathogenic Yersinia enterocolitica is widely distributed in China where the primary bio-serotypes are 3/O: 3 and 2/O: 9. Recently, the distribution of 2/O: 9 strains are being gradually replaced by 3/O: 3 strains where presently 3/O: 3 strains are the major pathogenic Y. enterocolitica in China. To identify the growth conditions and cytokines induced by Y. enterocolitica and providing some clues for this shift, we performed competitive growth in vitro and in vivo for these two bio-serotype strains; and we also compared the cytokines induced by them in infected BALB/C mice...
2017: Frontiers in Cellular and Infection Microbiology
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