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https://www.readbyqxmd.com/read/28532186/bcg-and-protection-against-inflammatory-and-auto-immune-diseases
#1
Magdalena Kowalewicz-Kulbat, Camille Locht
Bacillus Calmette-Guérin (BCG) is the only available vaccine against tuberculosis. Although its protective efficacy against pulmonary tuberculosis is still under debate, it provides protection against other mycobacterial diseases. BCG is also an effective therapy against superficial bladder cancer and potentially decreases overall childhood mortality. Areas covered. The purpose of this paper is to provide a state-of-the-art summary of the beneficial effects of BCG in inflammatory and auto-immune diseases. As a strong inducer of Th1 type immunity, BCG has been reported to protect against atopic conditions, such as allergic asthma, a Th2-driven disorder...
May 22, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28531919/bupleurum-chinense-extract-ameliorates-an-ova-induced-murine-allergic-asthma-through-the-reduction-of-the-th2-and-th17-cytokines-production-by-inactivation-of-nf%C3%AE%C2%BAb-pathway
#2
Thi Tho Bui, Chun Hua Piao, Chang Ho Song, Hee Soon Shin, Ok Hee Chai
Bupleurum chinense belongs to the Bupleurum spp. family that has been used in traditional herbal medicine for over thousand years. It has been reported to have anti-inflammatory, anti-oxidant, hepato-protective, antipyretic, analgesic, anti-fibrotic and immunomodulatory effect. However, the effect of B. Chinense on allergic asthma remains unclear. This study investigated the immunomodulatory effects of B. Chinense extracts (BCE) on airway inflammation in asthmatic mice model. In the ovalbumin (OVA)-induced allergic asthma model, we evaluated the number of total cells, differential inflammatory cells and the production of proinflammatory cytokines in bronchoalveolar lavage fluid (BALF) and lung homogenate as well as histological structure...
May 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28524369/therapeutic-roles-of-telocytes-in-ova-induced-acute-asthma-in-mice
#3
Ling Ye, Dongli Song, Meiling Jin, Xiangdong Wang
Telocytes (TCs) newly discovered as the mesenchyme-derived interstitial cells were found to have supportive effects on mesenchymal stem cells (MSCs). The present study aimed at investigating effects of TCs or TCs gathered with MSCs on experimental airway inflammation and hyper-responsiveness. The TCs were isolated from the lung tissue of the female BALB/c mice. The ovalbumin (OVA)-induced asthma model was established. TCs (1 × 10(6) /2 × 10(6) ) and/or MSCs (1 × 10(6) ) were injected through mice tail vein for consecutive three days before OVA excited the mice...
May 19, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28515363/lung-cd103-dendritic-cells-restrain-allergic-airway-inflammation-through-il-12-production
#4
Laura Conejero, Sofía C Khouili, Sarai Martínez-Cano, Helena M Izquierdo, Paola Brandi, David Sancho
DCs are necessary and sufficient for induction of allergic airway inflammation. CD11b+ DCs direct the underlying Th2 immunity, but debate surrounds the function of CD103+ DCs in lung immunity and asthma after an allergic challenge. We challenged Batf3-/- mice, which lacked lung CD103+ DCs, with the relevant allergen house dust mite (HDM) as a model to ascertain their role in asthma. We show that acute and chronic HDM exposure leads to defective Th1 immunity in Batf3-deficient mice. In addition, chronic HDM challenge in Batf3-/- mice results in increased Th2 and Th17 immune responses and exacerbated airway inflammation...
May 18, 2017: JCI Insight
https://www.readbyqxmd.com/read/28515358/irf5-distinguishes-severe-asthma-in-humans-and-drives-th1-phenotype-and-airway-hyperreactivity-in-mice
#5
Timothy B Oriss, Mahesh Raundhal, Christina Morse, Rachael E Huff, Sudipta Das, Rachel Hannum, Marc C Gauthier, Kathryn L Scholl, Krishnendu Chakraborty, Seyed M Nouraie, Sally E Wenzel, Prabir Ray, Anuradha Ray
Severe asthma (SA) is a significant problem both clinically and economically, given its poor response to corticosteroids (CS). We recently reported a complex type 1-dominated (IFN-γ-dominated) immune response in more than 50% of severe asthmatics despite high-dose CS treatment. Also, IFN-γ was found to be critical for increased airway hyperreactivity (AHR) in our model of SA. The transcription factor IRF5 expressed in M1 macrophages can induce a Th1/Th17 response in cocultured human T cells. Here we show markedly higher expression of IRF5 in bronchoalveolar lavage (BAL) cells of severe asthmatics as compared with that in cells from milder asthmatics or healthy controls...
May 18, 2017: JCI Insight
https://www.readbyqxmd.com/read/28509396/anti-inflammatory-antioxidant-and-immunomodulatory-effects-of-curcumin-in-ovalbumin-sensitized-rat
#6
Farzaneh Shakeri, Mohammad Hossein Boskabady
BACKGROUND: Anti-inflammatory and antioxidant properties of curcumin have been shown. In this study, anti-inflammatory, antioxidant, and immunomodulatory effects of curcumin in sensitized rat were evaluated. METHODS: Six groups of rats including control (C), ovalbumin-sensitized (as a rat model of asthma, S), S groups treated with curcumin (Cu 0.15, 0.30, and 0.60 mg/mL), and 1.25 μg/mL dexamethasone (S + D) were studied. Curcumin and dexamethasone were given in animals' drinking water during sensitization period...
May 16, 2017: BioFactors
https://www.readbyqxmd.com/read/28497800/reciprocal-regulation-of-the-il9-locus-by-counteracting-activities-of-transcription-factors-irf1-and-irf4
#7
Lucia Campos Carrascosa, Matthias Klein, Yohko Kitagawa, Christina Lückel, Federico Marini, Anika König, Anna Guralnik, Hartmann Raifer, Stefanie Hagner-Benes, Diana Rädler, Andreas Böck, Cholho Kang, Michael Lohoff, Holger Garn, Bianca Schaub, Friederike Berberich-Siebelt, Shimon Sakaguchi, Tobias Bopp, Magdalena Huber
The T helper 9 (Th9) cell transcriptional network is formed by an equilibrium of signals induced by cytokines and antigen presentation. Here we show that, within this network, two interferon regulatory factors (IRF), IRF1 and IRF4, display opposing effects on Th9 differentiation. IRF4 dose-dependently promotes, whereas IRF1 inhibits, IL-9 production. Likewise, IRF1 inhibits IL-9 production by human Th9 cells. IRF1 counteracts IRF4-driven Il9 promoter activity, and IRF1 and IRF4 have opposing function on activating histone modifications, thus modulating RNA polymerase II recruitment...
May 12, 2017: Nature Communications
https://www.readbyqxmd.com/read/28493549/transcription-factor-rbp-j-mediated-signaling-regulates-basophil-s-immunoregulatory-function-in-mouse-asthma-model
#8
Shuo-Yao Qu, Ya-Long He, Jian Zhang, Chang-Gui Wu
Basophils (BAs) play an important role in the promotion of aberrant Th2 immune response in asthma. It is not only the effective cell, but also modulates initiation of Th2 immune responses. We earlier demonstrated that Notch signaling regulates the biological function of BAs in vitro. However, whether this pathway plays the same role in vivo is not clear. The purpose of the present study was to investigate the effect of Notch signaling on BA's function in the regulation of allergic airway inflammation in a murine model of asthma...
May 11, 2017: Immunology
https://www.readbyqxmd.com/read/28481620/ifn%C3%AE-influences-epithelial-anti-viral-responses-via-histone-methylation-of-the-rig-i-promoter
#9
C Mirella Spalluto, Akul Singhania, Doriana Cellura, Christopher H Woelk, Tilman Sanchez-Elsner, Karl J Staples, Tom M A Wilkinson
The asthmatic lung is prone to respiratory viral infections that exacerbate the symptoms of the underlying disease. Recent work has suggested that a deficient Th1 response in early life may lead to these aberrant anti-viral responses. We investigated whether the inflammatory environment of the airway epithelium could modulate anti-viral gene expression via epigenetic mechanisms, in order to study the development of a long-term dysregulation of innate responses, which are a hallmark of asthma. We primed AALEB, a human bronchial epithelial cell line, with IFNγ and IL13 and subsequently infected cells with Respiratory Syncytial Virus (RSV) and innate anti-viral genes expression and their epigenetic markers were analysed...
May 8, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28479601/b7-dc-pd-l2-costimulation-of-cd4-t-helper-1-response-via-rgmb
#10
Xinxin Nie, Wenni Chen, Ying Zhu, Baozhu Huang, Weiwei Yu, Zhanshuai Wu, Sizheng Guo, Yiping Zhu, Liqun Luo, Shengdian Wang, Lieping Chen
The role of B7-DC in T-cell responses remains controversial because both coinhibitory and costimulatory functions have been reported in various experimental systems in vitro and in vivo. In addition to interacting with the coinhibitory receptor PD-1, B7-DC has also been shown to bind repulsive guidance molecule b (RGMb). The functional consequences of the B7-DC/RGMb interaction, however, remain unclear. More than a decade ago, we reported that replacement of a murine B7-DC mutant lysine with serine (K113S) at positive 113 resulted in a loss of binding capacity to PD-1...
May 8, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28479334/cdc42-related-genes-are-upregulated-in-helper-t-cells-from-obese-asthmatic-children
#11
Deepa Rastogi, John Nico, Andrew D Johnston, Toni Adrianne M Tobias, Yurydia Jorge, Fernando Macian, John M Greally DMed
BACKGROUND: Pediatric obesity-related asthma is more severe and less responsive to medications than asthma in normal-weight children. Obese asthmatic children have nonatopic TH1-polarized systemic inflammation that correlates with pulmonary function deficits, but the pathways underlying TH1-polarized inflammation are not well understood. OBJECTIVE: We compared the CD4(+) T-cell transcriptome in obese children with asthma with that in normal-weight children with asthma to identify key differentially expressed genes associated with TH1-polarized inflammation...
May 4, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28474108/the-immunotherapeutic-role-of-bacterial-lysates-in-a-mouse-model-of-asthma
#12
Chentao Liu, Rong Huang, Rujie Yao, Aimei Yang
INTRODUCTION: Asthma is the most common chronic lower respiratory disease in childhood throughout the world. Recurrent respiratory tract infections in young children, especially viral infections, are the major cause of acute asthmatic exacerbations and contribute to development of asthma. Bacterial extracts have been used to improve the immune defenses of the respiratory tract. However, seldom studies have examined the effect of bacterial lysates on childhood asthma. In this study, we examined whether bacterial lysates (OM-85) will improve symptoms of asthmatic mice via modulation of the immune response...
May 4, 2017: Lung
https://www.readbyqxmd.com/read/28442213/pathogenic-cd4-t-cells-in-patients-with-asthma
#13
REVIEW
Lyndsey M Muehling, Monica G Lawrence, Judith A Woodfolk
Asthma encompasses a variety of clinical phenotypes that involve distinct T cell-driven inflammatory processes. Improved understanding of human T-cell biology and the influence of innate cytokines on T-cell responses at the epithelial barrier has led to new asthma paradigms. This review captures recent knowledge on pathogenic CD4(+) T cells in asthmatic patients by drawing on observations in mouse models and human disease. In patients with allergic asthma, TH2 cells promote IgE-mediated sensitization, airway hyperreactivity, and eosinophilia...
April 22, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28423590/neutralization-of-interleukin-17-suppresses-allergic-rhinitis-symptoms-by-downregulating-th2-and-th17-responses-and-upregulating-the-treg-response
#14
Zhao Wei Gu, Yun Xiu Wang, Zhi Wei Cao
Allergic rhinitis (AR) has long been considered to predominantly involve the actions of Th2 cells, with relatively small contributions from Th1 cells. In recent years, the discovery of Th17 and regulatory T (Treg) cells has rendered the Th1/Th2 balance paradigm more complex and expanded our understanding of the pathogenesis of AR. IL-17, a key cytokine produced by Th17 cells, is known to induce allergen-specific Th2 cell activation, eosinophil and neutrophil accumulation, and serum IgE production in asthma; all of these features may play important roles in AR...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28402696/chronic-cough-and-an-atypical-pattern-of-peripheral-pulmonary-opacities-a-case-report-secondary-to-suspected-drug-onset
#15
Ronnie Alas, Mark Tony Williams, Ghiam Yamin, Mohsen Rofoogaran
INTRODUCTION: Chronic eosinophilic pneumonia (CEP) is an idiopathic interstitial lung disease with nonspecific symptoms that involves a complex inflammatory cascade. CASE STUDY: A 36-year-old prisoner with a history of psoriasis presented with progressive worsening dyspnea, chest pain, and cough. His symptoms started 2-months after starting adalimumab, a tumor necrosis factor (TNF)-inhibitor, for psoriasis treatment. RESULTS: Initial workup revealed 27% eosinophils on complete blood count, elevated IgE levels on bronchoalveolar lavage, and bilateral peripheral lung opacities on imaging...
April 12, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28392920/coexistence-of-diffuse-panbronchiolitis-and-asthma-reciprocity-of-neutrophilic-and-eosinophilic-inflammation
#16
Kiyoshi Takeyama, Yuri Shimizu, Masanobu Ishii, Hiroko Hara, Mitsuko Kondo, Jun Tamaoki
Diffuse panbronchiolitis (DPB) and asthma are obstructive airway diseases, the former being characterized by Th1-type and the latter by Th2-type airway inflammation. Differential diagnosis is often a problem, but coexistence has rarely been reported. A 76-year-old man with asthma was admitted to our hospital because of one-month history of dyspnoea on exertion with bilateral diffuse granular shadows. He also had a history of chronic sinusitis. Auscultation of the lungs showed coarse crackles and wheezes. Laboratory data revealed an elevated total serum immunoglobulin E and a high titre of cold agglutinin...
May 2017: Respirology Case Reports
https://www.readbyqxmd.com/read/28383629/ip-10-in-occupational-asthma-review-of-the-literature-and-case-control-study
#17
F Ragusa, P Fallahi
OBJECTIVES: T-helper (Th)2 cytokines are thought to mediate most of the allergic inflammatory responses associated with atopic asthma. But the Th1-related chemokine, interferon (IFN)-γ-induced protein 10 (IP-10)/chemokine (C-X-C motif) ligand (CXCL)10, was the predominant chemokine measured during human allergic pulmonary late-phase reaction. Viral infection and allergens can exacerbate asthma by inducing the accumulation of these chemokines and inflammatory cells in the airway. Short-acting β2-adrenoreceptor agonists, budesonide and formoterol (all important relievers in asthma exacerbation), such as vitamin D3, vitamin C, have been shown to inhibit airway cells inflammatory responses by modulating these chemokines...
March 2017: La Clinica Terapeutica
https://www.readbyqxmd.com/read/28349869/modulation-of-regulatory-t-cells-by-intranasal-allergen-immunotherapy-in-an-experimental-rat-model-of-airway-allergy
#18
Saibal Moitra, Ankur Datta, Somnath Mondal, Iman Hazra, Sk Md Omar Faruk, Prasanta K Das, Anjan K Basu, Santanu K Tripathi, Swapna Chaudhuri
Allergic airway diseases such as asthma and allergic rhinitis are increasing in prevalence worldwide. The theory of an altered Th1/Th2 balance in allergic diathesis has recently been termed a "procrustean paradigm" as it failed to explain many preclinical findings. Regulatory T cells (Treg) have now been shown to be critical in T-cell homeostasis and in the maintenance of peripheral tolerance to allergens. Allergen specific immunotherapy (SIT) has been shown to induce regulatory T cells in allergic patients...
March 24, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28320170/evaluating-the-association-of-allergies-with-multiple-sclerosis-susceptibility-risk-and-disease-activity-in-a-pediatric-population
#19
Theresa Bourne, Michael Waltz, T C Casper, K Kavak, G Aaen, A Belman, L Benson, M Candee, T Chitnis, J Graves, B Greenberg, M Gorman, Y Harris, L Krupp, T Lotze, S Mar, J Ness, C Olsen, S Roalstad, M Rodriguez, J Rose, J Rubin, T Schreiner, J M Tillema, I Kahn, A Waldman, L Barcellos, E Waubant, B Weinstock-Guttman
BACKGROUND: Multiple sclerosis (MS) and allergies are both considered to be related to imbalanced Th1 and Th2 immune responses. Previous studies evaluating the relationship between MS and allergies provide conflicting results. OBJECTIVE: To assess allergies and asthma as risk factors for MS and as predictors of MS relapses in a pediatric cohort. METHODS: The environment and genetic risk factors for pediatric MS study is a national case-control project with 16 participating US sites...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28300662/diisononyl-phthalate-induces-asthma-via-modulation-of-th1-th2-equilibrium
#20
Yun-Ho Hwang, Man-Jeong Paik, Sung-Tae Yee
Diisononyl phthalate (DINP), a member of the phthalate family, is used to plasticize polyvinyl chloride (PVC). This chemical is known to enhance airway inflammation in the OVA-induced asthma model (adjuvant effects) and aggravate allergic dermatitis. Moreover, DINP enhances the production of interleukin-4 in activated CD4(+) T cells. However, the effect of DINP itself on the differentiation of naïve CD4(+) T cells into T helper cells (Th1/Th2) in vitro and allergic asthma in vivo has not yet been studied. In this study, DINP was shown to suppress the polarization of Th1 and enhance the polarization of Th2 from naïve CD4(+) T cells in vitro...
March 12, 2017: Toxicology Letters
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