DOCSLIB.ORG

Immunoglobulin a in Asthma: Friend Or Foe?

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Immunoglobulin a in Asthma: Friend Or Foe? Copyright ©ERS Journals Ltd 1998 Eur Respir J 1998; 12: 517–518 European Respiratory Journal DOI: 10.1183/09031936.98.12030517 ISSN 0903 - 1936 Printed in UK - all rights reserved EDITORIAL Immunoglobulin A in asthma: friend or foe? P. S . H i e m s t r a In this issue of the Journal, NAHM et al. [1] describe the present on neutrophils, eosinophils, monocytes and mac- results of an analysis of the levels of immunoglobulin rophages (reviewed by MORTON et al. [7]). CD89 is a heavily (Ig)G and IgA directed against allergens and bacterial anti- glycosylated transmembrane protein with a 32 kDa pro- gens in induced sputum that was obtained from patients tein core, that is a member of the immunoglobulin gene with atopic asthma. Sputum induction was performed by superfamily and closely related to human Fc receptors for inhalation of hypertonic saline, a technique that has gain- IgG and IgE. Binding of IgA or sIgA to FcαRI leads to ed much attention because it is relatively noninvasive and activation of a variety of effector functions, in-cluding allows the study of airways inflammation [2]. The authors phagocytosis, production of reactive oxygen in-termedi- demonstrate that IgA levels against both Dermatophagoi- ates, degranulation and production of cytokines. Various des farinae extracts and Streptococcus pneumoniae cap- studies have demonstrated IgA-binding and IgA-mediated sular polysaccharide are higher in induced sputum from activation of eosinophils, but IgA binding molecules on atopic asthmatics as compared with the levels found eosinophils have been incompletely characterized. As indi- in sputum from healthy controls. In addition, IgG levels cated, eosinophils express FcαRI [7]. It has been shown against D. farinae are also higher in asthmatics; in con- that the degree of glycosylation of FcαRI on eo-sinophils trast, IgG levels against S. pneumoniae do not differ bet- is higher than that on neutrophils [8], but the functional ween the two groups. Interestingly, the authors describe consequences of this difference are not clear. Alternative that specific IgA levels in sputum correlate with levels of splice variants of FcαRI messenger ribonucleic acid eosinophil cationic protein (ECP), a marker for eosinophil (mRNA) have also been reported in eosinophils [9], but degranulation. These results suggest an involvement of their role in mediating the eosinophil response to IgA trig- IgA in eosinophil degranulation in the patients with atopic gering remains to be established. A receptor for the secre- asthma. tory component on eosinophils that may be in-volved in IgA is the predominant immunoglobulin isotype pro- sIgA-mediated eosinophil activation was descri-bed by duced in the human body. Most IgA present in mucosal LAMKHIOUED et al. [10]. Whereas the full pattern of IgA bind- secretions, such as those collected by bronchoalveolar ing structures on the eosinophil awaits further characteri- lavage (BAL), is present in a polymeric form bound to a zation, it is clear that IgA has marked effects on secretory component (secretory IgA (sIgA)) [3]. Data eosinophils. These effects include induction of degranula- presently available indicate that IgA plays a role both in tion [11] and cytokine production [12]. There is also evi- host defence against infections and in inflammatory pro- dence that eosinophils from patients with atopic asthma cesses [4–6]. In the lung, its host defence function is achie- are more prone to the stimulatory effects of IgA, since eo- ved in part by the ability of IgA to inhibit the adherence sinophils from allergic individuals express more FcαR [8]. of micro-organisms or viruses to the mucosal surface. In In line with this observation, it was recently reported that addition, IgA may facilitate the removal of antigens from the T-helper (Th)2-derived cytokines interleukin (IL)-4 the submucosa by transporting it through the epithelial and IL-5 increase the binding of IgA-coated beads to eosi- layer [6]. Furthermore, binding of IgA to particles faci- nophils [13]. litates their phagocytosis due to the presence of specific In support of these data from in vitro studies, several IgA Fc receptors on the surface of phagocytes [7]. studies including the study by NAHM et al. [1] indicate that In addition to playing a role in host defence against in- IgA is involved in degranulation of eosinophils in vivo. fection, IgA may also contribute to tissue injury. The role Firstly, the levels of IgA in BAL fluid from patients with of IgA in the pathogenesis of IgA nephropathy has been asthma are higher than those in controls [3, 14]. Secondly, extensively studied, and deposits of IgA together with a marked correlation between total IgA or sIgA levels and complement components are observed in the mesangial eosinophil cationic protein (ECP) exists in BAL fluid and area of the kidney [5]. IgA may also cause lung injury, as sputum from asthmatic patients [3, 15]. The results des- shown by studies on IgA immune complex-mediated acute cribed by NAHM et al. [1] on the role of allergen-specific lung injury in the rat [4]. The capacity of IgA to trigger the IgA are in line with those reported recently by PEEBLES et al. release of mediators from inflammatory cells and to acti- [15] describing a marked correlation between ECP levels vate the complement system is involved in its role in in BAL fluid and the levels of ragweed-specific IgA in inflammation [7]. BAL fluid and serum following segmental allergen chal- Various cell types have been found to bind IgA. The lenge. In addition, complexes of IgA and IL-8 have been prototype Fc receptor for IgA is FcαRI (CD89), which is detected in induced sputum, and the levels of these com- plexes were higher in atopic asthmatics compared with Correspondence: P.S. Hiemstra, Dept of Pulmonology, Building 1 C3-P, Leiden University Hospital, Albinusdreef 2, P.O. Box 9600, 2300 RC healthy nonatopic control subjects [16]. In atopic asth- Leiden, The Netherlands. Fax: 31 715248118. matics, the levels of IgA-IL-8 complexes correlated with 518 P.S. HIEMSTRA sputum ECP levels. Finally, also in patients with chronic 6. Lamm ME, Nedrud JG, Kaetzel CS, Mazanec MB. IgA eosinophilic pneumonia a correlation between IgA and and mucosal defense. APMIS 1995; 103: 241–246. ECP levels in BAL was reported [17]. 7. Morton HC, van Egmond M, van de Winkel JG. Structure Increased IgA levels in pulmonary secretions can be and function of human IgA Fc receptors (Fc alpha R). explained by various mechanisms, including increased Crit Rev Immunol 1996; 16: 423–440. numbers or activity of mucosal plasma cells that secrete 8. Monteiro RC, Hostoffer RW, Cooper MD, Bonner JR, IgA, increased leakage of IgA from the circulation, and Gartland GL, Kubagawa H. Definition of immunoglo- increased secretory component-mediated transport of IgA bulin A receptors on eosinophils and their enhanced across the epithelium. It has been shown that IgA in BAL expression in allergic individuals. J Clin Invest 1993; 92: and sputum from asthmatics is mainly derived from local 1681–1685. synthesis, and that increased IgA levels in these secretions 9. van Dijk TB, Bracke M, Caldenhoven E, et al. Cloning cannot be fully explained by increased vascular leakage. and characterization of Fc alpha Rb, a novel Fc alpha re- There is evidence from in vitro studies that cytokines that ceptor (CD89) isoform expressed in eosinophils and neu- trophils. Blood 1996; 88: 4229–4238. have been implicated in the pathogenesis of asthma may 10. Lamkhioued B, Gounni AS, Gruart V, Pierce A, Capron enhance the transport of IgA across the epithelium. IL-4 γ A, Capron M. Human eosinophils express a receptor for and interferon (IFN)- synergistically enhance the expres- secretory component. Role in secretory IgA-dependent sion of secretory component on, and IgA binding to cul- activation. Eur J Immunol 1995; 25: 117–125. tured epithelial cells [18]. In line with this observation, γ 11. Abu-Ghazaleh RI, Fujisawa T, Mestecky J, Kyle RA, IFN- and IL-4 were found to increase secretory compo- Gleich GJ. IgA-induced eosinophil degranulation. J Imm- nent-mediated transport of IgA across epithelium in cell unol 1989; 142: 2393–2400. culture [19, 20]. 12. Nakajima H, Gleich GJ, Kita H. Constitutive production In conclusion, the present data support a role for immuno- of IL-4 and IL-10 and stimulated production of IL-8 by globulin A in eosinophil-mediated inflammatory processes normal peripheral blood eosinophils. J Immunol 1996; in the lung in asthma. The contribution of immunoglobu- 156: 4859–4866. lin A-induced activation of other effector cells to airways 13. Bracke M, Dubois GR, Bolt K, et al. Differential effects inflammation remains to be investigated. Increased immu- of the T helper cell type 2-derived cytokines IL-4 and IL- noglobulin A levels and priming for immunoglobulin A- 5 on ligand binding to IgG and IgA receptors expressed induced stimulation of eosinophils may contribute to eosi- by human eosinophils. J Immunol 1997; 159: 1459–1465. nophilic inflammation in asthma. The function of FcαRI 14. Van de Graaf EA, Out TA, Kobesen A, Jansen HM. and other immunoglobulin A receptors needs to be further Lactoferrin and secretory IgA in the bronchoalveolar lav- explored to understand the putative role of immunoglobu- age fluid from patients with a stable asthma. Lung 1991; lin A in asthma. 169: 275–283. 15. Peebles RS Jr, Liu MC, Adkinson NF Jr, Lichtenstein Acknowledgement: The author would like to thank C. LM, Hamilton RG. Ragweed-specific antibodies in bron- van Kooten (Dept of Nephrology, LUMC) for his critical choalveolar lavage fluids and serum before and after seg- review of the manuscript. mental lung challenge: IgE and IgA associated with eosinophil degranulation. J Allergy Clin Immunol 1998; References 101 (2 Pt 1): 265–273.
Load more

Recommended publications
  • Eosinophils but Not of Neutrophils Stimulates Effector Functions of Human Interaction with Secretory Component
    Interaction with Secretory Component Stimulates Effector Functions of Human Eosinophils But Not of Neutrophils This information is current as Youichi Motegi and Hirohito Kita of September 23, 2021. J Immunol 1998; 161:4340-4346; ; http://www.jimmunol.org/content/161/8/4340 Downloaded from References This article cites 49 articles, 20 of which you can access for free at: http://www.jimmunol.org/content/161/8/4340.full#ref-list-1 Why The JI? Submit online. http://www.jimmunol.org/ • Rapid Reviews! 30 days* from submission to initial decision • No Triage! Every submission reviewed by practicing scientists • Fast Publication! 4 weeks from acceptance to publication *average by guest on September 23, 2021 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 © 1998 by The American Association of Immunologists All rights reserved. Print ISSN: 0022-1767 Online ISSN: 1550-6606. Interaction with Secretory Component Stimulates Effector Functions of Human Eosinophils But Not of Neutrophils1 Youichi Motegi and Hirohito Kita2 Eosinophils and their products are important in the pathophysiology of allergic inflammation in mucosal tissues. Secretory component bound to IgA mediates transepithelial transport of IgA and confers increased stability on the resultant secretory IgA; however, the effect of secretory component on the biologic activity of IgA is unknown.
    [Show full text]
  • Detailed Structure and Pathophysiological Roles of the Iga-Albumin Complex in Multiple Myeloma
    International Journal of Molecular Sciences Article Detailed Structure and Pathophysiological Roles of the IgA-Albumin Complex in Multiple Myeloma Yuki Kawata 1, Hisashi Hirano 1, Ren Takahashi 1, Yukari Miyano 1, Ayuko Kimura 1, Natsumi Sato 1, Yukio Morita 2, Hirokazu Kimura 1,* and Kiyotaka Fujita 1 1 Department of Health Sciences, Gunma Paz University Graduate School of Health Sciences, 1-7-1, Tonyamachi, Takasaki-shi, Gunma 370-0006, Japan; [email protected] (Y.K.); [email protected] (H.H.); [email protected] (R.T.); [email protected] (Y.M.); [email protected] (A.K.); [email protected] (N.S.); [email protected] (K.F.) 2 Laboratory of Public Health II, Azabu University School of Veterinary Medicine, 1-17-71, Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan; [email protected] * Correspondence: [email protected]; Tel.: +81-27-365-3366; Fax: +81-27-388-0386 Abstract: Immunoglobulin A (IgA)-albumin complexes may be associated with pathophysiology of multiple myeloma, although the etiology is not clear. Detailed structural analyses of these protein– protein complexes may contribute to our understanding of the pathophysiology of this disease. We analyzed the structure of the IgA-albumin complex using various electrophoresis, mass spectrom- etry, and in silico techniques. The data based on the electrophoresis and mass spectrometry showed that IgA in the sera of patients was dimeric, linked via the J chain. Only dimeric IgA can bind to albumin molecules leading to IgA-albumin complexes, although both monomeric and dimeric forms of IgA were present in the sera.
    [Show full text]
  • Allergen-Specific Igg1 and Igg3 Through Fc Gamma RII Induce Eosinophil Degranulation
    Allergen-specific IgG1 and IgG3 through Fc gamma RII induce eosinophil degranulation. M Kaneko, … , G J Gleich, H Kita J Clin Invest. 1995;95(6):2813-2821. https://doi.org/10.1172/JCI117986. Research Article Evidence suggests that eosinophils contribute to inflammation in bronchial asthma by releasing chemical mediators and cytotoxic granule proteins. To investigate the mechanism of eosinophil degranulation in asthma, we established an in vitro model of allergen-induced degranulation. We treated tissue culture plates with short ragweed pollen (SRW) extract and sera from either normal donors or SRW-sensitive patients with asthma. Eosinophils were incubated in the wells and degranulation was assessed by measurement of eosinophil-derived neurotoxin in supernatants. We detected degranulation only when sera from SRW-sensitive patients were reacted with SRW. Anti-IgG and anti-Fc gamma RII mAb, but not anti-IgE or anti-Fc epsilon RII mAb, abolished the degranulation. IgG-depleted serum did not induce degranulation; IgE-depleted serum triggered as much degranulation as untreated serum. Furthermore, serum levels of SRW-specific IgG1 or IgG3 correlated with the amounts of released eosinophil-derived neurotoxin. When eosinophils were cultured in wells coated with purified IgG or IgE, eosinophil degranulation was observed only with IgG. Finally, human IgG1 and IgG3, and less consistently IgG2, but not IgG4, induced degranulation. Thus, sera from patients with SRW-sensitive asthma induce eosinophil degranulation in vitro through antigen-specific IgG1 and IgG3 antibodies. These antibodies may be responsible for degranulation of eosinophils in inflammatory reactions, such as bronchial asthma. Find the latest version: https://jci.me/117986/pdf Allergen-specific IgG1 and IgG3 through FcRIl Induce Eosinophil Degranulation Masayuki Kaneko, Mark C.
    [Show full text]
  • Different Innate and Adaptive Immune Response to SARS-Cov-2 Infection of Asymptomatic, Mild and Severe Cases
    medRxiv preprint doi: https://doi.org/10.1101/2020.06.22.20137141; this version posted September 28, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted medRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license . Title: Different innate and adaptive immune response to SARS-CoV-2 infection of asymptomatic, mild and severe cases Rita Carsetti1,2*, Salvatore Zaffina3,4, Eva Piano Mortari1#, Sara Terreri1#, Francesco Corrente2, Claudia Capponi2, Patrizia Palomba2, Mattia Mirabella2, Simona Cascioli5, Paolo Palange6, Ilaria Cuccaro6, Cinzia Milito7, Alimuddin Zumla8,9, Markus Maeurer10,11, Vincenzo Camisa3,4, Maria Rosaria Vinci3,4, Annapaola Santoro3,4, Eleonora Cimini12, Luisa Marchioni13, Emanuele Nicastri13, Fabrizio Palmieri13, Chiara Agrati12, Giuseppe Ippolito14, Ottavia Porzio15,16, Carlo Concato17, Andrea Onetti Muda18, Massimiliano Raponi4, Concetta Quintarelli19,20, Isabella Quinti7, Franco Locatelli19,21 Affiliations: 1B Cell Pathophysiology Unit, Immunology Research Area, Bambino Gesù Children's Hospital IRCCS, Rome, Italy; 2Diagnostic Immunology Unit, Department of Laboratories, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy 3Occupational Medicine/Health Technology Assessment and Safety Research Unit, Clinical- Technological Innovations Research Area, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy 4Health Directorate, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy 5Research Laboratories, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy 6Department of Public Health and infectious diseases pulmonary division, Policlinico Umberto I Hospital, Rome, Italy. 7Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy NOTE: This preprint reports new research that has not been certified by peer review and should not be used to guide clinical practice.
    [Show full text]
  • The Effect of Mirthful Laughter on Stress and Natural Killer Cell Activity
    Western Kentucky University TopSCHOLAR® Nursing Faculty Publications School of Nursing 2003 The ffecE t of Mirthful Laughter on Stress and Natural Killer Cell Activity Mary P. Bennett Western Kentucky University, [email protected] Janice M. Zeller Lisa Rosenberg Judith McCann Follow this and additional works at: http://digitalcommons.wku.edu/nurs_fac_pub Part of the Alternative and Complementary Medicine Commons, Nursing Commons, and the Oncology Commons Recommended Repository Citation Bennett, Mary P.; Zeller, Janice M.; Rosenberg, Lisa; and McCann, Judith. (2003). The Effect of Mirthful Laughter on Stress and Natural Killer Cell Activity. Alternative Therapies in Health and Medicine, 9 (2), 38-45. Available at: http://digitalcommons.wku.edu/nurs_fac_pub/9 This Other is brought to you for free and open access by TopSCHOLAR®. It has been accepted for inclusion in Nursing Faculty Publications by an authorized administrator of TopSCHOLAR®. For more information, please contact [email protected]. original research THE EFFECT OF MIRTHFUL LAUGHTER ON STRESS AND NATURAL KILLER CELL ACTIVITY Mary P. Bennett, DNSc, RN, Janice M. Zeller, PhD, RN, FAAN, Lisa Rosenberg, PhD, RN, Judith McCann, DNSc, RN Mary P. Bennett is associate professor and assistant dean, function postintervention (t16 =2.52 P=.037) and compared with the Indiana State University School of Nursing in Terre Haute, Ind. remaining participants (t32=32.1; P=.04). Humor response scale scores Janice M. Zeller is professor, Department of Adult Health correlated with changes in NK cell activity (r16=.744;P =.001). Nursing and associate professor, Department of Conclusion • Laughter may reduce stress and improve NK cell activity. As Immunology/Microbiology; and Lisa Rosenberg is assistant pro- low NK cell activity is linked to decreased disease resistance and increased fessor, Department of Community and Mental Health Nursing morbidity in persons with cancer and HIV disease, laughter may be a useful and associate dean, Student Affairs, College of Nursing, at Rush cognitive-behavioral intervention.
    [Show full text]
  • IG Living Magazine April-May 2018
    April-May 2018 IGLiving.com Staying Active How to Keep Moving with Chronic Illness Planning Travel? Follow These Simple Steps Exercises for Better Balance What Is Now Known Assistive Devices About SAD? for Staying Mobile On IGLiving.com Feaatures an easy- to-nnavigate design Indepth content onn IG-treated diseases annd treatment Cononnnnectnne withh oouurur Pattiiieeent Advocateee,, AAbbbbie Cornett RReeaead weeklyklylyy bblogs about isssues relal tted d to living with cchchrhroononionic illnessnessessessss Valuablee Resourcees and more On Facebook Findd timely and relevant informao tion posted dailyy, providing a venue foro connnecting with others in the IG community. On the Go CONTENTS | April-May 2018 Features Up Front 16 Travel Tips for Those 5 Editorial with Chronic Illness Staying Active with By Abbie Cornett and Chronic Illness Ronale Tucker Rhodes, MS By Ronale Tucker Rhodes, MS 6 Abbie’s Corner 20 Exercises to Preventing Isolation Improve Balance By Abbie Cornett By Matthew D. Hansen, DPT, MPT, BSPTS 7 Faces of IG From our Facebook page 24 Specific Antibody Deficiency and/or Impaired Polysaccharide Responsiveness Departments By E. Richard Stiehm, MD 8 Ask the Experts 32 Understanding Healthcare professionals’ NK Cell Deficiency responses to patient questions By Jordan S. Orange, MD, PhD 9 Immunology 101 DiGeorge Syndrome: Thymus Development and the Initiation of T Lymphocyte Development Sources By Terry O. Harville, MD, PhD 42 Product Guide 10 Clinical Brief Mobility Management What Are Immunoglobulins? By Trudie Mitschang By Michelle Greer, RN 44 Book Corner 12 In the News New and useful reading Research, science, product and insurance updates 46 Resource Center Community foundations, associations, forums and other resources Columns 36 Let’s Talk!—SamMichael Long Advertising in IG Living By Trudie Mitschang IG Living Magazine is read by 30,000 subscribers who are patients that depend upon immune globulin products and their healthcare providers.
    [Show full text]
  • Major Histocompatibility Complex Class III Genes and Susceptibility to Immunoglobulin a Deficiency and Common Variable Immunodeficiency
    Major histocompatibility complex class III genes and susceptibility to immunoglobulin A deficiency and common variable immunodeficiency. J E Volanakis, … , H W Schroeder Jr, M D Cooper J Clin Invest. 1992;89(6):1914-1922. https://doi.org/10.1172/JCI115797. Research Article We have proposed that significant subsets of individuals with IgA deficiency (IgA-D) and common variable immunodeficiency (CVID) may represent polar ends of a clinical spectrum reflecting a single underlying genetic defect. This proposal was supported by our finding that individuals with these immunodeficiencies have in common a high incidence of C4A gene deletions and C2 rare gene alleles. Here we present our analysis of the MHC haplotypes of 12 IgA-D and 19 CVID individuals from 21 families and of 79 of their immediate relatives. MHC haplotypes were defined by analyzing polymorphic markers for 11 genes or their products between the HLA-DQB1 and the HLA-A genes. Five of the families investigated contained more than one immunodeficient individual and all of these included both IgA-D and CVID members. Analysis of the data indicated that a small number of MHC haplotypes were shared by the majority of immunodeficient individuals. At least one of two of these haplotypes was present in 24 of the 31 (77%) immunodeficient individuals. No differences in the distribution of these haplotypes were observed between IgA-D and CVID individuals. Detailed analysis of these haplotypes suggests that a susceptibility gene or genes for both immunodeficiencies are located within the class III region of the MHC, possibly between the C4B and C2 genes. Find the latest version: https://jci.me/115797/pdf Major Histocompatibility Complex Class Ill Genes and Susceptibility to Immunoglobulin A Deficiency and Common Variable Immunodeficiency John E.
    [Show full text]
  • I M M U N O L O G Y Core Notes
    II MM MM UU NN OO LL OO GG YY CCOORREE NNOOTTEESS MEDICAL IMMUNOLOGY 544 FALL 2011 Dr. George A. Gutman SCHOOL OF MEDICINE UNIVERSITY OF CALIFORNIA, IRVINE (Copyright) 2011 Regents of the University of California TABLE OF CONTENTS CHAPTER 1 INTRODUCTION...................................................................................... 3 CHAPTER 2 ANTIGEN/ANTIBODY INTERACTIONS ..............................................9 CHAPTER 3 ANTIBODY STRUCTURE I..................................................................17 CHAPTER 4 ANTIBODY STRUCTURE II.................................................................23 CHAPTER 5 COMPLEMENT...................................................................................... 33 CHAPTER 6 ANTIBODY GENETICS, ISOTYPES, ALLOTYPES, IDIOTYPES.....45 CHAPTER 7 CELLULAR BASIS OF ANTIBODY DIVERSITY: CLONAL SELECTION..................................................................53 CHAPTER 8 GENETIC BASIS OF ANTIBODY DIVERSITY...................................61 CHAPTER 9 IMMUNOGLOBULIN BIOSYNTHESIS ...............................................69 CHAPTER 10 BLOOD GROUPS: ABO AND Rh .........................................................77 CHAPTER 11 CELL-MEDIATED IMMUNITY AND MHC ........................................83 CHAPTER 12 CELL INTERACTIONS IN CELL MEDIATED IMMUNITY ..............91 CHAPTER 13 T-CELL/B-CELL COOPERATION IN HUMORAL IMMUNITY......105 CHAPTER 14 CELL SURFACE MARKERS OF T-CELLS, B-CELLS AND MACROPHAGES...............................................................111
    [Show full text]
  • Titan Gel Immunofix-Plus Procedure
    TITAN GEL IMMUNOFIX-PLUS PROCEDURE Cat. No. 3067, 3068, 3069 Helena Laboratories TITAN GEL ImmunoFix-Plus is intended for the identification of materials completely dissolved. monoclonal gammopathies using protein electrophoresis and Storage and Stability: The packaged buffer should be stored at 15 to immunofixation. 30°C and is stable until the expiration date indicated on the package. Diluted buffer is stable two months stored at 15 to 30°C. SUMMARY Signs of Deterioration: Discard packaged buffer if the material shows Immunofixation electrophoresis (IFE) is a two stage procedure using signs of dampness or discoloration. Discard diluted buffer if it becomes agarose gel high resolution protein electrophoresis in the first stage and turbid. immunoprecipitation in the second. The specimen may be serum, urine or 3. Acid Blue Stain cerebrospinal fluid. There are numerous applications for IFE in research, Ingredients: The stain is comprised of acid blue stain. forensic medicine, genetic studies and clinical laboratory procedures. The WARNING: FOR IN-VITRO DIAGNOSTIC USE ONLY. DO NOT greatest demand for IFE is in the clinical laboratory where it is primarily INGEST. used for the detection and identification of monoclonal gammopathies. A Preparation for Use: Dissolve the dry stain in 1000 mL 5% acetic acid. monoclonal gammopathy is a primary disease state in which a single Storage and Stability: The dry stain should be stored at 15 to 30°C and clone of plasma cells produces elevated levels of an immunoglobulin of a is stable until the expiration date indicated on the package. The stain single class and type. Such immunoglobulins are referred to as solution is stable for six months when stored at 15 to 30°C in a closed monoclonal proteins, M-proteins, or paraproteins.
    [Show full text]
  • The Effect of Laughter on Stress and Natural Killer Cell Activity
    Nurul Husniyah binti Che Soh et al /J. Pharm. Sci. & Res. Vol. 12(12), 2020, 1496-1498 The Effect of Laughter on Stress and Natural Killer Cell Activity Nurul Husniyah binti Che Soh Graduate Student, Department of Physiology,Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai, India. Dr. Jothipriya Assistant professor, Department Physiology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Chennai. Abstract Aim: To find out the effect of laughter on stress and natural killer cell activity. Background and reason: Stress is a well-known slow killer, is rampant in our society, which impact everyone differently, but the final results are easy to observe and explain. Laughter triggers the release of a cocktail of happy chemicals, including NK cells, endorphins, serotonin, and growth hormone that are produced each time we laugh that boosts the immune responses. Laughter stimulates circulation and helps muscle relaxation which is releasing stress. Effect of laughter on stress and natural killer cells are to be reviewed as laughter significantly can reduce stress as well as improve the natural killer cells activity. Thorough literature research performed with present inclusion and exclusion criteria. Keywords: stress, natural killer cells, endorphins, apoptosis, enzymes INTRODUCTION Cousins. In a study, a group of heart attack patients were Laughter is the best way to reduce stress in people live, separated into two smaller groups; the first group was and can aid us to deal and survive a stressful lifestyle. situated under standard medical care whereas the second Since 20 years ago, it is frequently documented by group watched humorous video for about 30 minutes per psycho-neuro-immunological (PNI) research related to day.
    [Show full text]
  • Definition of Immunoglobulin a Receptors on Eosinophils and Their Enhanced Expression in Allergic Individuals
    Definition of immunoglobulin A receptors on eosinophils and their enhanced expression in allergic individuals. R C Monteiro, … , G L Gartland, H Kubagawa J Clin Invest. 1993;92(4):1681-1685. https://doi.org/10.1172/JCI116754. Research Article Fc alpha receptors (Fc alpha R), detected by the binding of IgA and by anti-Fc alpha R antibodies, were found to be differentially expressed on eosinophils and neutrophils. Neutrophils were the major granulocyte population expressing Fc alpha R, and they expressed much higher levels of Fc alpha R than eosinophils. The expression of Fc alpha R by eosinophils could be upregulated approximately threefold by Ca2+ ionophore treatment in a dose- and time-dependent manner. This effect, which was blocked by a chelating agent, was not duplicated by other cellular stimuli. Eosinophils in allergic individuals displayed enhanced Fc alpha R expression, whereas neutrophils did not. The Fc alpha R on eosinophils had a higher molecular mass (70-100 kD) than those identified on neutrophils (55-75 kD). However, removal of N-linked carbohydrates from Fc alpha R of eosinophils and neutrophils revealed a major protein core of 32 kD for both cell types. The data indicate that expression of Fc alpha R molecules with a characteristic glycosylation pattern is upregulated on eosinophils in allergic individuals. Find the latest version: https://jci.me/116754/pdf Definition of Immunoglobulin A Receptors on Eosinophils and Their Enhanced Expression in Allergic Individuals Renato C. Monteiro, * Robert W. Hostoffer, Max D. Cooper,* James R. Bonner, G. Larry Gartland, and Hiromi Kubagawa Division of Developmental and Clinical Immunology, Departments of Pediatrics, Medicine, Pathology, and Microbiology, and the Comprehensive Cancer Center, University ofAlabama at Birmingham; and the *Howard Hughes Medical Institute, Birmingham, Alabama 35294 Abstract binding to specific Fc7yR and FcER present on the cell surface (3, 4).
    [Show full text]
  • We, the Members of the American
    We, the members of the American Academy of Allergy Asthma & Immunology (AAAAI) are very concerned about our ability as physicians to provide safe and effective care to our patients who require intravenous immunoglobulin (IVIG) for treatment of primary immunodeficiency (PI). PI is caused by inherent defects of the immune system and results in recurrent, severe or unusual infections. Appropriately treating PI with IVIG preserves organ function, improves quality of life, prevents infection-related death, and increases lifespan. The long-term goal of IVIG therapy is to render the patient infection free, to the greatest extent possible. An anonymous survey of the AAAAI membership ascertained that >95% of our physicians feel that current reimbursement standards present a risk to the health of their patients with PI. Thus, we would like to provide you with important information to help guide you in appropriately providing coverage for IVIG to patients whose lives depend upon it. We outline 8 guiding principles for the safe, effective and appropriate use of IVIG for PI. These principles are listed below and are described in greater detail with supporting materials and specific references in the appendices to this letter. 1) Indication - IVIG therapy is indicated as replacement therapy for patients with PI characterized by absent or deficient antibody production. This is an FDA-approved indication for IVIG, for which all currently available products are licensed. 2) Diagnoses - There are a large number of PI diagnoses for which IVIG is indicated and recommended. Many have low total levels of IgG, but some have a normal level with documented specific antibody deficiency.
    [Show full text]