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mast cell activation disorder

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https://www.readbyqxmd.com/read/28725969/mastocytosis-from-a-molecular-point-of-view
#1
REVIEW
Daniel Elieh Ali Komi, Todd Rambasek, Stefan Wöhrl
Mast cells (MCs) are physiologically activated by binding of stem cell factor (SCF) to the extracellular domains of the Kit receptor. This binding increases the proliferation and prolongs the survival of normal mature MCs, as well as intensifies the release of mediators. In mastocytosis, somatic mutations of the coding Kit gene cause autocrine dysregulation and lead to constitutive KIT activation even in the absence of its ligand SCF. Clinical symptoms are caused by MC-mediator release and/or infiltration of MCs into tissues...
July 19, 2017: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/28713383/the-toxicological-mechanisms-of-environmental-soot-black-carbon-and-carbon-black-focus-on-oxidative-stress-and-inflammatory-pathways
#2
REVIEW
Rituraj Niranjan, Ashwani Kumar Thakur
The environmental soot and carbon blacks (CBs) cause many diseases in humans, but their underlying mechanisms of toxicity are still poorly understood. Both are formed after the incomplete combustion of hydrocarbons but differ in their constituents and percent carbon contents. For the first time, "Sir Percival Pott" described soot as a carcinogen, which was subsequently confirmed by many others. The existing data suggest three main types of diseases due to soot and CB exposures: cancer, respiratory diseases, and cardiovascular dysfunctions...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28694089/the-potential-protective-role-of-taurine-against-experimental-allergic-inflammation
#3
Sun-Young Nam, Hyung-Min Kim, Hyun-Ja Jeong
AIMS: Taurine has been widely evaluated as a potential therapeutic agent in chronic inflammatory disorders and various infections. However, the potential role of taurine in regulating allergic inflammatory responses is currently unknown. MATERIALS AND METHODS: The present study was designed to evaluate the in vitro effects of taurine on the levels of thymic stromal lymphopoietin (TSLP) and other pro-inflammatory cytokines and activation of caspase-1 and nuclear factor (NF)-κB as well as the phosphorylations of c-Jun N-terminal kinase (JNK) and p38 in phorbol 12-myristate 13-acetate and calcium ionophore A23187 (PMACI)-triggered human mast cell line, HMC-1 cells...
July 7, 2017: Life Sciences
https://www.readbyqxmd.com/read/28684647/hypersensitivity-to-antipyretics-pathogenesis-diagnosis-and-management
#4
REVIEW
Q U Lee
Antipyretics are commonly prescribed drugs and hypersensitivity occurs at rates of 0.01% to 0.3%. Hypersensitivity can be due to immune mechanisms that include type I to IV hypersensitivity. Type I hypersensitivity results from specific immunoglobulin E production following sensitisation on first exposure. Subsequent exposures elicit degranulation of mast cells, culminating an immediate reaction. Non-type I hypersensitivity is a delayed reaction that involves various effector cells, resulting in maculopapular rash, fixed drug eruptions, drug reaction with eosinophilia and systemic symptoms, and Stevens-Johnson syndrome/toxic epidermal necrolysis...
July 7, 2017: Hong Kong Medical Journal, Xianggang Yi Xue za Zhi
https://www.readbyqxmd.com/read/28677275/ultraviolet-radiation-and-skin-mast-cells-effects-mechanisms-and-relevance-for-skin-diseases
#5
REVIEW
Hanna Siiskonen, Anna Smorodchenko, Karoline Krause, Marcus Maurer
Mast cells (MCs) are well-known as versatile effector cells in allergic reactions and several other immune responses. Skin MCs and cutaneous MC responses are subject to the effects of environmental factors including ultraviolet radiation (UVR). Numerous studies have assessed the effects of UVR on MCs, in vitro and in vivo. Interestingly, UVR seems to have variable effects on nonactivated and activated mast cells. In general, UV therapy is beneficial in the treatment of urticaria and mastocytosis, but the effects are variable depending on treatment regimen and type of UVR...
July 4, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28676349/immunoregulatory-effect-of-mast-cells-influenced-by-microbes-in-neurodegenerative-diseases
#6
Francesco Girolamo, Coppola Cristiana Coppola, Domenico Ribatti
When related to central nervous system (CNS) health and disease, brain mast cells (MCs) can be a source of either beneficial or deleterious signals acting on neural cells. We review the current state of knowledge about molecular interactions between MCs and glia in neurodegenerative diseases such as Multiple Sclerosis, Alzheimer's disease, amyotrophic lateral sclerosis, Parkinson's disease, epilepsy. We also discuss the influence on MC actions evoked by the host microbiota, which has a profound effect on the host immune system, inducing important consequences in neurodegenerative disorders...
July 1, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28664215/anti-inflammatory-effect-of-galectin-1-in-a-murine-model-of-atopic-dermatitis
#7
Mab Pereira Corrêa, Frans Eberth Costa Andrade, Alexandre Dantas Gimenes, Cristiane Damas Gil
Atopic dermatitis (AD) is caused by both dysregulated immune responses and an impaired skin barrier. Although beta-galactoside-binding protein galectin-1 (Gal-1) has immunomodulatory effects in several inflammatory disorders, therapeutic strategies based on its anti-inflammatory properties have not been explored in AD. Thus, we evaluate pharmacological treatment with Gal-1 in the progression of an ovalbumin (OVA)-induced AD-like skin lesions. The skin of OVA-immunized male BALB/c mice was challenged with drops containing OVA on days 11, 14-18 and 21-24...
June 29, 2017: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/28637902/tgf-%C3%AE-1-suppresses-il-33-induced-mast-cell-function
#8
Victor S Ndaw, Daniel Abebayehu, Andrew J Spence, Patrick A Paez, E Motunrayo Kolawole, Marcela T Taruselli, Heather L Caslin, Alena P Chumanevich, Anuya Paranjape, Bianca Baker, Brian O Barnstein, Tamara T Haque, Kasalina N Kiwanuka, Carole A Oskeritzian, John J Ryan
TGF-β1 is involved in many pathological conditions, including autoimmune disorders, cancer, and cardiovascular and allergic diseases. We have previously found that TGF-β1 can suppress IgE-mediated mast cell activation of human and mouse mast cells. IL-33 is a member of the IL-1 family capable of inducing mast cell responses and enhancing IgE-mediated activation. In this study, we investigated the effects of TGF-β on IL-33-mediated mast cell activation. Bone marrow-derived mast cells cultured in TGF-β1, β2, or β3 showed reduced IL-33-mediated production of TNF, IL-6, IL-13, and MCP-1 in a concentration-dependent manner...
June 21, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28629749/a-distinct-biomolecular-profile-identifies-monoclonal-mast-cell-disorders-in-patients-with-idiopathic-anaphylaxis
#9
Melody C Carter, Avanti Desai, Hirsh D Komarow, Yun Bai, Sarah T Clayton, Alicia S Clark, Karina N Ruiz-Esteves, Lauren M Long, Daly Cantave, Todd M Wilson, Linda M Scott, Olga Simakova, Mi-Yeon Jung, Jamie Hahn, Irina Maric, Dean D Metcalfe
BACKGROUND: Clonal mast cell disorders are known to occur in a subset of patients with systemic reactions to Hymenoptera stings. This observation has prompted the question as to whether clonal mast cell disorders also occur in patients with idiopathic anaphylaxis (IA). OBJECTIVE: We sought to determine the prevalence of clonal mast cell disorders among patients with IA, criteria to identify those patients who require a bone marrow biopsy and whether the pathogenesis of IA involves a hyper-responsive mast cell compartment...
June 16, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28573751/early-weaning-stress-induces-chronic-functional-diarrhea-intestinal-barrier-defects-and-increased-mast-cell-activity-in-a-porcine-model-of-early-life-adversity
#10
C S Pohl, J E Medland, E Mackey, L L Edwards, K D Bagley, M P DeWilde, K J Williams, A J Moeser
BACKGROUND: Early life adversity (ELA) is a risk factor for development of gastrointestinal disorders later in life. The underlying mechanisms through which ELA and sex interact to influence disease susceptibility remains poorly understood. METHODS: Utilizing a porcine early weaning stress (EWS) model to mimic ELA, we investigated the long-term effects of EWS on functional diarrhea, ileal permeability, mast cell activity and mast cell relationship with enteric ganglia...
June 1, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28570344/pharmacotherapy-of-mast-cell-disorders
#11
Theo Gülen, Cem Akin
PURPOSE OF REVIEW: Mast cell disorders (MCDs) comprise mastocytosis and disorders referred to as mast cell activation syndrome and are caused by abnormal accumulation and/or activation of mast cells in tissues. Clinical signs and symptoms are protean; therefore, finding suitable treatment options for individual patients entails a challenge for clinicians. The purpose of this manuscript is to review the literature on the available therapeutic interventions in patients with MCD. RECENT FINDINGS: Pharmacotherapy is mainly directed against the effects of mast cells and their mediators...
August 2017: Current Opinion in Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28570220/effects-of-rupatadine-on-platelet-activating-factor-induced-human-mast-cell-degranulation-compared-with-desloratadine-and-levocetirizine-the-maspaf-study
#12
R Munoz-Cano, E Ainsua-Enrich, I Torres-Atencio, M Martin, J Sánchez-Lopez, J Bartra, C Picado, J Mullol, A Valero
BACKGROUND AND OBJECTIVE: Platelet-activating factor (PAF) is a lipid mediator involved in the pathophysiology of several allergic diseases, for example, in the amplification of mast cell (MC) activation in anaphylaxis. Rupatadine is an antihistamine with a demonstrated anti-PAF effect, although its capacity to inhibit PAF-induced MC degranulation has not been fully evaluated. Objectives: To compare the ability of rupatadine to inhibit PAF-induced MC degranulation with that of desloratadine and levocetirizine and to confirm the dual anti-H1 and anti-PAF activity of rupatadine...
2017: Journal of Investigational Allergology & Clinical Immunology
https://www.readbyqxmd.com/read/28527346/inhibitory-effects-of-2-oxo-2h-chromen-4-yl-4-methylbenzenesulfonate-on-allergic-inflammatory-responses-in-rat-basophilic-leukemia-cells
#13
Gaeun Yoo, Kooyeon Lee, Deug-Chan Lee
Mast cells play crucial roles in the initiation of allergic inflammatory responses by releasing various mediators such as histamines, cytokines, and leukotrienes. In addition, signaling cascade pathways, such as the mitogen-activated protein kinase (MAPK) pathway, contribute to the regulation of mast cell degranulation. Accordingly, different research strategies have been pursued to develop anti-inflammatory and anti-allergic drugs by regulating these signaling pathways. The development of new drugs that inhibit mast cell degranulation may help in the treatment of allergies...
May 17, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28500685/analysis-of-serum-markers-of-cellular-immune-activation-in-patients-with-bullous-pemphigoid
#14
Katja Bieber, Anna Lara Ernst, Stefan Tukaj, Maike M Holtsche, Enno Schmidt, Detlef Zillikens, Ralf J Ludwig, Michael Kasperkiewicz
Experimental models of bullous pemphigoid (BP), the most frequent subepidermal autoimmune bullous disease, revealed that the immune response leading to blister formation represents an incompletely understood complex process involving different inflammatory cells. In contrast to previous reports commonly focusing on limited molecular and cellular phenotypes of the disease, the aim of this study was to investigate a broad spectrum of markers of cellular immune activation in patients with BP. We found that serum levels of soluble CD4, myeloperoxidase, S100A12, eosinophil cationic protein, and soluble P-selectin were significantly elevated in patients with active BP compared with normal controls...
May 13, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28487844/inflammation-in-prostatic-hyperplasia-and-carcinoma-basic-scientific-approach
#15
REVIEW
Božo Krušlin, Davor Tomas, Tihana Džombeta, Marija Milković-Periša, Monika Ulamec
Chronic inflammation is associated with both benign conditions and cancer. Likewise, inflammatory cells are quite common in benign prostatic hyperplasia (BPH) and prostatic tissue harboring cancer. Triggers that activate inflammatory pathways in the prostate remain a subject of argument and are likely to be multifactorial, some of these being bacterial antigens, different chemical irritations, and metabolic disorders. Acute and chronic inflammation in prostate leads to accumulation of immunocompetent cells, mainly T lymphocytes and macrophages, but also neutrophils, eosinophils, and mast cells, depending on the type of offending agent...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28480512/regulation-of-immune-cell-signaling-by-ship1-a-phosphatase-scaffold-protein-and-potential-therapeutic-target
#16
REVIEW
Samantha D Pauls, Aaron J Marshall
The phosphoinositide phosphatase SHIP is a critical regulator of immune cell activation. Despite considerable study, the mechanisms controlling SHIP activity to ensure balanced cell activation remain incompletely understood. SHIP dampens BCR signaling in part through its association with the inhibitory coreceptor Fc gamma receptor IIB, and serves as an effector for other inhibitory receptors in various immune cell types. The established paradigm emphasizes SHIP's inhibitory receptor-dependent function in regulating phosphoinositide 3-kinase signaling by dephosphorylating the phosphoinositide PI(3,4,5)P3 ; however, substantial evidence indicates that SHIP can be activated independently of inhibitory receptors and can function as an intrinsic brake on activation signaling...
May 7, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28447503/1-6-o-o-diacetylbritannilactone-suppresses-activation-of-mast-cell-and-airway-hyper-responsiveness
#17
Meihua Jin, Sungun Kim, Nan Qin, Xi Chen, Ning Ji, Sheng-An Tang, Dexin Kong, Eunkyung Lee, Hongquan Duan
Mast cells play critical roles in allergic disorders such as atopic dermatitis and allergic asthma. The aim of this study was to investigate the anti-inflammatory and anti-asthmatic activities of 1,6-O,O-diacetylbritannilactone (OODBL) isolated from Inula japonica Thunb. (I. japonica) in a murine asthma model and bone marrow-derived mast cells (BMMCs). In an ovalbumin-induced asthma model, OODBL administration attenuated the airway hyper-responsiveness induced by aerosolized methacholine and serum IgE level in asthmatic mice...
April 27, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28439288/systemic-mastocytosis-with-kit-v560g-mutation-presenting-as-recurrent-episodes-of-vascular-collapse-response-to-disodium-cromoglycate-and-disease-outcome
#18
Iolanda Conde-Fernandes, Rita Sampaio, Filipa Moreno, José Palla-Garcia, Maria Dos Anjos Teixeira, Inês Freitas, Esmeralda Neves, Maria Jara-Acevedo, Luis Escribano, Margarida Lima
BACKGROUND: Mastocytosis are rare diseases characterized by an accumulation of clonal mast cells (MCs) in one or multiple organs or tissues. Patients with systemic mastocytosis (SM), whose MCs frequently arbor the activating D816V KIT mutation, may have indolent to aggressive diseases, and they may experience MC mediator related symptoms. Indolent SM with recurrent anaphylaxis or vascular collapse in the absence of skin lesions, ISMs(-), is a specific subtype indolent SM (ISM), and this clonal MC activation disorder represents a significant fraction of all MC activation syndromes...
2017: Allergy, Asthma, and Clinical Immunology
https://www.readbyqxmd.com/read/28438191/continuous-diphenhydramine-infusion-and-imatinib-for-kit-d816v-negative-mast-cell-activation-syndrome-a-case-report
#19
Faizan Malik, Naveed Ali, Syed Imran Mustafa Jafri, Ali Ghani, Mohsin Hamid, Margot Boigon, Christian Fidler
BACKGROUND: We present the first full case report of the treatment of mast cell activation syndrome with continuous diphenhydramine infusion, which resulted in the improvement of anaphylactic reactions and a decrease in hospital readmission. Furthermore, the patient received imatinib in the absence of the KIT-D816V mutation, which led to further improvement of quality of life. Currently, we are trying to wean this patient off diphenhydramine; if successful, this attempt will represent the first reported case...
April 24, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28421075/activation-of-adhesion-gpcr-emr2-adgre2-induces-macrophage-differentiation-and-inflammatory-responses-via-g%C3%AE-16-akt-mapk-nf-%C3%AE%C2%BAb-signaling-pathways
#20
Kuan-Yu I, Yi-Shu Huang, Ching-Hsun Hu, Wen-Yi Tseng, Chia-Hsin Cheng, Martin Stacey, Siamon Gordon, Gin-Wen Chang, Hsi-Hsien Lin
EMR2/ADGRE2 is a human myeloid-restricted adhesion G protein-coupled receptor critically implicated in vibratory urticaria, a rare type of allergy caused by vibration-induced mast cell activation. In addition, EMR2 is also highly expressed by monocyte/macrophages and has been linked to neutrophil migration and activation. Despite these findings, little is known of EMR2-mediated signaling and its role in myeloid biology. In this report, we show that activation of EMR2 via a receptor-specific monoclonal antibody promotes the differentiation of human THP-1 monocytic cell line and induces the expression of pro-inflammatory mediators, including IL-8, TNF-α, and MMP-9...
2017: Frontiers in Immunology
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