Basophil Activation Tests (BAT): Degranulation, Cytometry and Chemotaxis in Drug Allergy
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Evaluation of T-Cell and B-Cell Epitopes and Design of Multivalent Vaccines Against Htlv-1 Diseases
EVALUATION OF T-CELL AND B-CELL EPITOPES AND DESIGN OF MULTIVALENT VACCINES AGAINST HTLV-1 DISEASES DISSERTATION Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State University By Roshni Sundaram, M.S. * * * * * The Ohio State University 2003 Dissertation Committee: Approved by Professor Pravin T.P. Kaumaya, Adviser Professor Christopher M. Walker Adviser Professor Neil R. Baker Department of Microbiology Professor Marshall V. Williams ABSTRACT Human T-cell lymphotropic virus type I (HTLV-1) is a C type retrovirus that is the causative agent of an aggressive T-cell malignancy, adult T-cell leukemia/lymphoma (ATLL). The virus is also implicated in a number of inflammatory disorders, the most prominent among them being HTLV-1 associated myelopathy or tropical spastic paraparesis (HAM/TSP). HTLV-1, like many viruses that cause chronic infection, has adapted to persist in the face of an active immune response in infected individuals. The viral transactivator Tax is the primary target of the cellular immune response and humoral responses are mainly directed against the envelope protein. Vaccination against HTLV-1 is a feasible option as there is very little genetic and antigenic variability. Vaccination regimes against chronic viruses must be aimed at augmenting the immune response to a level that is sufficient to clear the virus. This requires that the vaccine delivers a potent stimulus to the immune system that closely resembles natural infection to activate both the humoral arm and the cellular arm. It is also clear that multicomponent vaccines may be more beneficial in terms of increasing the breadth of the immune response as well as being applicable in an outbred population. -
White Blood Cells and Severe COVID-19: a Mendelian Randomization Study
Journal of Personalized Medicine Article White Blood Cells and Severe COVID-19: A Mendelian Randomization Study Yitang Sun 1 , Jingqi Zhou 1,2 and Kaixiong Ye 1,3,* 1 Department of Genetics, Franklin College of Arts and Sciences, University of Georgia, Athens, GA 30602, USA; [email protected] (Y.S.); [email protected] (J.Z.) 2 School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China 3 Institute of Bioinformatics, University of Georgia, Athens, GA 30602, USA * Correspondence: [email protected]; Tel.: +1-706-542-5898; Fax: +1-706-542-3910 Abstract: Increasing evidence shows that white blood cells are associated with the risk of coronavirus disease 2019 (COVID-19), but the direction and causality of this association are not clear. To evaluate the causal associations between various white blood cell traits and the COVID-19 susceptibility and severity, we conducted two-sample bidirectional Mendelian Randomization (MR) analyses with summary statistics from the largest and most recent genome-wide association studies. Our MR results indicated causal protective effects of higher basophil count, basophil percentage of white blood cells, and myeloid white blood cell count on severe COVID-19, with odds ratios (OR) per standard deviation increment of 0.75 (95% CI: 0.60–0.95), 0.70 (95% CI: 0.54–0.92), and 0.85 (95% CI: 0.73–0.98), respectively. Neither COVID-19 severity nor susceptibility was associated with white blood cell traits in our reverse MR results. Genetically predicted high basophil count, basophil percentage of white blood cells, and myeloid white blood cell count are associated with a lower risk of developing severe COVID-19. -
Monoclonal Antibody to Macrophages (Haematopoiesis Associated) - FITC
OriGene Technologies, Inc. OriGene Technologies GmbH 9620 Medical Center Drive, Ste 200 Schillerstr. 5 Rockville, MD 20850 32052 Herford UNITED STATES GERMANY Phone: +1-888-267-4436 Phone: +49-5221-34606-0 Fax: +1-301-340-8606 Fax: +49-5221-34606-11 [email protected] [email protected] BM4022F Monoclonal Antibody to Macrophages (Haematopoiesis associated) - FITC Alternate names: Macrophage marker Quantity: 0.2 mg Concentration: 0.4 mg/ml Background: 25F9 is associated with well-differentiated tissue macrophages both in normal and diseased tissues independently of the presence or absence of inflammation. The antigen is a 86kDa membrane protein, the epitope has not been further characterized. Host / Isotype: Mouse / IgG1 Recommended Isotype SM10F (for use in human samples) Controls: Clone: 25F9 Immunogen: Cultured human monocytes. Format: State: Liquid purified Ig fraction. Purification: Affinity chromatography. Buffer System: PBS buffer pH 7.2 with 0.09% sodium azide as preservative and 10 mg/ml BSA as stabilizer. Label: FITC Applications: Has been described to work in FACS. Antigen Distribution on Isolated cells and Tissue sections: Absent on freshly isolated monocytes and other blood cells; present on 40 - 50% of human monocytes after 6-7 day culture, also positive on some melanoma and carcinoma cell lines. Kupffer cells, histiocytes (skin), macrophages of the thymus, in the germinal centres of lymph nodes and spleen, in mamma carcinoma, melanoma, osteocarcinoma and gastric cancer; excema, sarcoidosis, BCG granuloma; synovial lining cells, tuberculoid leprosy: no expression in lepramatous leprosy. Other markers also used in the above studies include RM3/1, 27E10, G16/1, S36.48 and 8-5C2 in various combinations. -
Difference Between Antigen and Immunogen What Is an Antigen?
Difference Between Antigen and Immunogen www.differencebetween.com Key Difference - Antigen vs Immunogen Immunology is a branch of medicine and biology and is concerned about all aspects of the immune system in organisms. This is a much studied as it is vital to identify and assess the manner in which an organism protects itself against a foreign invasion. An immunological response is initiated upon the entry of a foreign entity which results in a cascade of reactions downstream to degrade or eliminate the foreign entity. An antigen is a foreign body or a molecule, which has the ability to bind to the antibody produced by the host in response to the recognition of the antigen. An immunogen is also a foreign molecule which can elicit an immune response by triggering the host immune system. The key difference between the antigen and the immunogen is their ability and the inability to generate an immune response;an immunogen is necessarily an antigen, but an antigen may not necessarily be an immunogen. What is an Antigen? Antigens are small molecular recognition sites present in the cellular surface of many bacteria, fungi, viruses, dust particles and other cellular and noncellular particles. These small molecules referred to as antigens,and they can be recognized by the host immune system. Antigens are mainly composed of proteins, amino acids, lipids, glycolipids, glycoproteins or nucleic acid markers. These molecules possess the ability to bind to the antibodies (immunoglobulins produced by B cells) produced by the host as an immune response. Antigens are also capable of triggering the host immune system to initiate an immune mechanism. -
Basophil/Mast Cell Progenitors in the Spleen Marrow and by Increasing
IL-3 Induces Basophil Expansion In Vivo by Directing Granulocyte-Monocyte Progenitors to Differentiate into Basophil Lineage-Restricted Progenitors in the Bone This information is current as Marrow and by Increasing the Number of of September 26, 2021. Basophil/Mast Cell Progenitors in the Spleen Keitaro Ohmori, Yuchun Luo, Yi Jia, Jun Nishida, Zhengqi Wang, Kevin D. Bunting, Demin Wang and Hua Huang Downloaded from J Immunol 2009; 182:2835-2841; ; doi: 10.4049/jimmunol.0802870 http://www.jimmunol.org/content/182/5/2835 http://www.jimmunol.org/ References This article cites 41 articles, 22 of which you can access for free at: http://www.jimmunol.org/content/182/5/2835.full#ref-list-1 Why The JI? Submit online. • Rapid Reviews! 30 days* from submission to initial decision by guest on September 26, 2021 • No Triage! Every submission reviewed by practicing scientists • Fast Publication! 4 weeks from acceptance to publication *average Subscription Information about subscribing to The Journal of Immunology is online at: http://jimmunol.org/subscription Permissions Submit copyright permission requests at: http://www.aai.org/About/Publications/JI/copyright.html Email Alerts Receive free email-alerts when new articles cite this article. Sign up at: http://jimmunol.org/alerts The Journal of Immunology is published twice each month by The American Association of Immunologists, Inc., 1451 Rockville Pike, Suite 650, Rockville, MD 20852 Copyright © 2009 by The American Association of Immunologists, Inc. All rights reserved. Print ISSN: 0022-1767 Online ISSN: 1550-6606. The Journal of Immunology IL-3 Induces Basophil Expansion In Vivo by Directing Granulocyte-Monocyte Progenitors to Differentiate into Basophil Lineage-Restricted Progenitors in the Bone Marrow and by Increasing the Number of Basophil/Mast Cell Progenitors in the Spleen1 Keitaro Ohmori,2* Yuchun Luo,* Yi Jia,* Jun Nishida,* Zhengqi Wang,† Kevin D. -
Basophils Trigger Emphysema Development in a Murine Model of COPD Through IL-4–Mediated Generation of MMP-12–Producing Macrophages
Basophils trigger emphysema development in a murine model of COPD through IL-4–mediated generation of MMP-12–producing macrophages Sho Shibataa,b, Kensuke Miyakea, Tomoya Tateishib, Soichiro Yoshikawaa, Yoshinori Yamanishia, Yasunari Miyazakib, Naohiko Inaseb, and Hajime Karasuyamaa,1 aDepartment of Immune Regulation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8510, Japan; and bDepartment of Respiratory Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8510, Japan Edited by Kazuhiko Yamamoto, the University of Tokyo; Max Planck–The University of Tokyo Center for Integrative Inflammology, the University of Tokyo, Tokyo, Japan, and accepted by Editorial Board Member Tadatsugu Taniguchi November 2, 2018 (received for review August 13, 2018) Chronic obstructive pulmonary disease (COPD) is a leading cause of COPD even after smoking has stopped (9). As an alternative morbidity and mortality worldwide. It has generally been consid- approach, a protease-induced model was established (10) soon ered a non-Th2-type lung disorder, characterized by progressive after the discovery of the association between α1-antitrypsin airflow limitation with inflammation and emphysema, but its deficiency and emphysema in humans (11), implying that an im- cellular and molecular mechanism remains ill defined, compared balance between proteases and antiproteases in the lung may re- with that of asthma characterized by reversible airway obstruc- sult in emphysema formation. Intratracheal or intranasal instillation tion. Here we show a previously unappreciated role for basophils of elastolytic enzymes, such as papain, human neutrophil elastase, at the initiation phase of emphysema formation in an elastase- and porcine pancreatic elastase, is utilized to trigger emphysema induced murine model of COPD in that basophils represent less formation (10, 12, 13). -
Understanding the Immune System: How It Works
Understanding the Immune System How It Works U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES NATIONAL INSTITUTES OF HEALTH National Institute of Allergy and Infectious Diseases National Cancer Institute Understanding the Immune System How It Works U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES NATIONAL INSTITUTES OF HEALTH National Institute of Allergy and Infectious Diseases National Cancer Institute NIH Publication No. 03-5423 September 2003 www.niaid.nih.gov www.nci.nih.gov Contents 1 Introduction 2 Self and Nonself 3 The Structure of the Immune System 7 Immune Cells and Their Products 19 Mounting an Immune Response 24 Immunity: Natural and Acquired 28 Disorders of the Immune System 34 Immunology and Transplants 36 Immunity and Cancer 39 The Immune System and the Nervous System 40 Frontiers in Immunology 45 Summary 47 Glossary Introduction he immune system is a network of Tcells, tissues*, and organs that work together to defend the body against attacks by “foreign” invaders. These are primarily microbes (germs)—tiny, infection-causing Bacteria: organisms such as bacteria, viruses, streptococci parasites, and fungi. Because the human body provides an ideal environment for many microbes, they try to break in. It is the immune system’s job to keep them out or, failing that, to seek out and destroy them. Virus: When the immune system hits the wrong herpes virus target or is crippled, however, it can unleash a torrent of diseases, including allergy, arthritis, or AIDS. The immune system is amazingly complex. It can recognize and remember millions of Parasite: different enemies, and it can produce schistosome secretions and cells to match up with and wipe out each one of them. -
The Term Meaning White Blood Cells Is
The Term Meaning White Blood Cells Is Micro Angelico still desalinate: venatic and unclimbed Elliot originate quite significatively but globes her proximocracoviennes and admeasuring catechetically. politely. Welsh Hazardableis attritional orand pollened, endows Sherwood voicelessly never as statant comb-outs Ira interpenetrates any output! Trophoblast cells are destined to give rise to many of the extraembryonic tissues. Genetic disorders and blood the cells is a permanent hair shaft, great care provider first line reported by lab technician may be included in circulation, the superficial veins. The part of the brain that controls coordinated movement. What Is A Medical Technologist? Inflammation of the liver. MPV is used along with platelet count to diagnose some diseases. After circulating in the bloodstream for about a day, monocytes enter body tissues to become macrophages, which can destroy some germs by surrounding and digesting them. The legacy of this great resource continues as the Merck Veterinary Manual in the US and Canada and the MSD Manual outside of North America. An abnormal increase in the volume of circulating blood. These small cells seem to sound an alarm when infectious agents invade your blood. Comparisons may be useful for a differential diagnosis. Finally, emotional or physical stress can also cause elevated white blood cell counts. The ability of the body to learn to fight specific infections after being exposed to the germs that cause them. However, you may also visit the Cookie Settings at any time to provide controlled consent, and you can withdraw your consent there. Severe pain that occurs suddenly and usually lasts a short while. -
The Role of Eosinophils and Basophils in Allergic Diseases Considering Genetic Findings
The role of eosinophils and basophils in allergic diseases considering genetic findings. Rachel Nadif, Farid Zerimech, Emmanuelle Bouzigon, Regis Matran To cite this version: Rachel Nadif, Farid Zerimech, Emmanuelle Bouzigon, Regis Matran. The role of eosinophils and ba- sophils in allergic diseases considering genetic findings.. Current Opinion in Allergy and Clinical Im- munology, Lippincott, Williams & Wilkins, 2013, 13 (5), pp.507-13. 10.1097/ACI.0b013e328364e9c0. inserm-00880260 HAL Id: inserm-00880260 https://www.hal.inserm.fr/inserm-00880260 Submitted on 3 Oct 2014 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. The role of eosinophils and basophils in allergic diseases considering genetic findings Rachel Nadifa,b, Farid Zerimechc,d, Emmanuelle Bouzigone,f, Regis Matranc,d Affiliations: aInserm, Centre for research in Epidemiology and Population Health (CESP), U1018, Respiratory and Environmental Epidemiology Team, F-94807, Villejuif, France bUniv Paris-Sud, UMRS 1018, F-94807, Villejuif, France cCHRU de Lille, F-59000, Lille, France dUniv Lille Nord de France, EA4483, F-59000, Lille, France eUniv Paris Diderot, Sorbonne Paris Cité, Institut Universitaire d’Hématologie, F-75007, Paris, France fInserm, UMR-946, F-75010, Paris, France Correspondence to Rachel Nadif, PhD, Inserm, Centre for research in Epidemiology and Population Health (CESP), U1018, Respiratory and Environmental Epidemiology Team, F-94807, Villejuif, France. -
How Are White Blood Cells Classified?
How are white blood cells classified? Copyright 2017 by the Rector and Visitors of the University of Virginia How are white blood cells classified? Types of White Blood Cells: Neutrophil Eosinophil Basophil Lymphocyte Monocyte . The types of white blood cells are shown above. The next page will describe lymphocytes in further detail. A healthy individual has all of these white blood cells types, but within specific ranges. Deviation from these ranges can indicate acute illness or a chronic disease. A mnemonic that is often used to remember the relative amount of each white blood cell that should be present is “Never Let Monkeys Eat Bananas.” Never Neutrophil Highest amounts Let Lymphocyte Monkeys Monocyte Eat Eosinophil Bananas Basophil Lowest amounts . In other words, neutrophils should always be present in higher amounts compared to the other cell types. This will be described further in “A first step in diagnosing LGL leukemia: The blood smear.” Copyright 2017 by the Rector and Visitors of the University of Virginia How are white blood cells classified? Introduction: White blood cells are blood cells that fight infection and disease. Lymphocytes are a type of white blood cell. They can identify antigens (substances foreign to the body) and cause an immune response. There are three types of lymphocytes: T-cell, NK-cell, and B-cell. In healthy adults, 10-15% of the lymphocytes are large granular lymphocytes (LGLs). To learn more about LGL cells, see “A first step in diagnosing LGL leukemia: The blood smear.” A person is diagnosed with LGL leukemia if there is a clonal (copied) population of T-cells or NK-cells present. -
Vaccine Immunology Claire-Anne Siegrist
2 Vaccine Immunology Claire-Anne Siegrist To generate vaccine-mediated protection is a complex chal- non–antigen-specifc responses possibly leading to allergy, lenge. Currently available vaccines have largely been devel- autoimmunity, or even premature death—are being raised. oped empirically, with little or no understanding of how they Certain “off-targets effects” of vaccines have also been recog- activate the immune system. Their early protective effcacy is nized and call for studies to quantify their impact and identify primarily conferred by the induction of antigen-specifc anti- the mechanisms at play. The objective of this chapter is to bodies (Box 2.1). However, there is more to antibody- extract from the complex and rapidly evolving feld of immu- mediated protection than the peak of vaccine-induced nology the main concepts that are useful to better address antibody titers. The quality of such antibodies (e.g., their these important questions. avidity, specifcity, or neutralizing capacity) has been identi- fed as a determining factor in effcacy. Long-term protection HOW DO VACCINES MEDIATE PROTECTION? requires the persistence of vaccine antibodies above protective thresholds and/or the maintenance of immune memory cells Vaccines protect by inducing effector mechanisms (cells or capable of rapid and effective reactivation with subsequent molecules) capable of rapidly controlling replicating patho- microbial exposure. The determinants of immune memory gens or inactivating their toxic components. Vaccine-induced induction, as well as the relative contribution of persisting immune effectors (Table 2.1) are essentially antibodies— antibodies and of immune memory to protection against spe- produced by B lymphocytes—capable of binding specifcally cifc diseases, are essential parameters of long-term vaccine to a toxin or a pathogen.2 Other potential effectors are cyto- effcacy. -
Granulocytes in Helminth Infection - Who Is Calling the Shots?
Current Medicinal Chemistry, 2012, 19, 1567-1586 1567 Granulocytes in Helminth Infection - Who is Calling the Shots? B.L. Makepeace1, C. Martin2, J.D. Turner3 and S. Specht*,4 1Department of Infection Biology, Institute of Infection & Global Health, University of Liverpool, Liverpool L69 7ZJ, UK 2USM 7245 MCAM, CNRS MNHN, Muséum National d’Histoire Naturelle, 61 rue Buffon, 75231 Paris Cedex 05, France 3Department of Molecular and Biochemical Parasitology, Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK 4Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, 53105 Bonn, Germany Abstract: Helminths are parasitic organisms that can be broadly described as “worms” due to their elongated body plan, but which otherwise differ in shape, development, migratory routes and the predilection site of the adults and larvae. They are divided into three major groups: trematodes (flukes), which are leaf-shaped, hermaphroditic (except for blood flukes) flatworms with oral and ventral suckers; cestodes (tapeworms), which are segmented, hermaphroditic flatworms that inhabit the intestinal lumen; and nematodes (roundworms), which are dioecious, cylindrical parasites that inhabit intestinal and peripheral tissue sites. Helminths exhibit a sublime co-evolution with the host´s immune system that has enabled them to successfully colonize almost all multicellular species present in every geographical environment, including over two billion humans. In the face of this challenge, the host immune system has evolved to strike a delicate balance between attempts to neutralize the infectious assault versus limitation of damage to host tissues. Among the most important cell types during helminthic invasion are granulocytes: eosinophils, neutrophils and basophils. Depending on the specific context, these leukocytes may have pivotal roles in host protection, immunopathology, or facilitation of helminth establishment.