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Inhibition chez le rat LOU/C adulte de la maturation des lymphocytes B par l'administration in vivo d'un anticorps monoclonal anti-IgM : utilisation potentielle en xénogreffe discordante

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En transplantation humaine, l’utilisation d’immunosuppresseurs tels que la cyclosporine A ou plus récemment le FK506, a permis une augmentation significative du taux de réussite des allogreffes. Ces succès ont favorisés l’accroissement et la diversification des allogreffes au point que, actuellement, le facteur limitant n’est plus la difficulté de l’acte technique ou le traitement immunosuppresseurs, mais bien la disponibilité d’organes (Hardy et coll., 1984). En effet, actuellement la demande d’organes dépasse largement l’offre et face à ce déficit croissant, une alternative potentielle est apparue : la réalisation des xénogreffes, c’est-à-dire l’utilisation d’organes provenant d’une espèce différente de celle du receveur. Le domaine des xénogreffes suscite un vif intérêt dans de nombreuses équipes des Cliniques universitaires Saint-Luc et de la Faculté de médecine de l’UCL dont le Laboratoire d’immunologie expérimentale du Prof. H. Bazin. Au sein de ce laboratoire, nous nous sommes proposé d’étudier les mécanismes immunologiques pouvant expliquer le rejet des xénogreffes discordantes.


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Natural Antibodies in Health and Disease
Authors: ---
Year: 2018 Publisher: Frontiers Media SA

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Natural antibodies (NAbs) are found in normal individuals in the absence of exogenous antigenic stimulation. Natural antibodies rapidly recognize and protect against pathogens that have not been previously encountered. NAbs also cross-react with several self-antigens, which, besides their role as a first line of defense against pathogens, affords them the ability to perform important housekeeping functions in healthy organisms. Such housekeeping functions include the clearance of oxidized damaged structures and/or apoptotic cells, which prevents the induction of pro-inflammatory effects. In addition, NAbs play a role in preventing the expansion of specific auto-reactive clones, thereby behaving as regulatory elements in acute or chronic inflammation. To maintain the non-pathogenic balance between the dual pathogen/self-antigen cross-reactivities of NAbs, a strict regulation in NAb secretion and function is necessary to avoid autoimmune disease. Actually, some of the NAbs related auto-reactivities, such as anti-DNA and anti-MOG, have been associated with autoimmunity. Furthermore, NAbs have been shown to bind to ‘neo-self’ carbohydrate antigens on glycolipids and glycoproteins found on malignant but not normal cells, which suggests NAbs may take part in tumor immunosurveillance. Many aspects regarding NAbs have yet to be studied in more detail: the reactivity and function of NAbs in health and disease, the behavior of the NAb repertoire with increasing age, the regulation of natural antibody production and auto-reactivity, the ways to specifically activate NAbs producing cells with desired specificities, the characteristics of human NAbs, among others. This special topics eBook consists of a number of articles exploring the cells that produce NAbs as well as the characteristics, function, specificity, and/or the role of natural antibodies in health and disease.


Book
Natural Antibodies in Health and Disease
Authors: ---
Year: 2018 Publisher: Frontiers Media SA

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Abstract

Natural antibodies (NAbs) are found in normal individuals in the absence of exogenous antigenic stimulation. Natural antibodies rapidly recognize and protect against pathogens that have not been previously encountered. NAbs also cross-react with several self-antigens, which, besides their role as a first line of defense against pathogens, affords them the ability to perform important housekeeping functions in healthy organisms. Such housekeeping functions include the clearance of oxidized damaged structures and/or apoptotic cells, which prevents the induction of pro-inflammatory effects. In addition, NAbs play a role in preventing the expansion of specific auto-reactive clones, thereby behaving as regulatory elements in acute or chronic inflammation. To maintain the non-pathogenic balance between the dual pathogen/self-antigen cross-reactivities of NAbs, a strict regulation in NAb secretion and function is necessary to avoid autoimmune disease. Actually, some of the NAbs related auto-reactivities, such as anti-DNA and anti-MOG, have been associated with autoimmunity. Furthermore, NAbs have been shown to bind to ‘neo-self’ carbohydrate antigens on glycolipids and glycoproteins found on malignant but not normal cells, which suggests NAbs may take part in tumor immunosurveillance. Many aspects regarding NAbs have yet to be studied in more detail: the reactivity and function of NAbs in health and disease, the behavior of the NAb repertoire with increasing age, the regulation of natural antibody production and auto-reactivity, the ways to specifically activate NAbs producing cells with desired specificities, the characteristics of human NAbs, among others. This special topics eBook consists of a number of articles exploring the cells that produce NAbs as well as the characteristics, function, specificity, and/or the role of natural antibodies in health and disease.


Book
Natural Antibodies in Health and Disease
Authors: ---
Year: 2018 Publisher: Frontiers Media SA

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Abstract

Natural antibodies (NAbs) are found in normal individuals in the absence of exogenous antigenic stimulation. Natural antibodies rapidly recognize and protect against pathogens that have not been previously encountered. NAbs also cross-react with several self-antigens, which, besides their role as a first line of defense against pathogens, affords them the ability to perform important housekeeping functions in healthy organisms. Such housekeeping functions include the clearance of oxidized damaged structures and/or apoptotic cells, which prevents the induction of pro-inflammatory effects. In addition, NAbs play a role in preventing the expansion of specific auto-reactive clones, thereby behaving as regulatory elements in acute or chronic inflammation. To maintain the non-pathogenic balance between the dual pathogen/self-antigen cross-reactivities of NAbs, a strict regulation in NAb secretion and function is necessary to avoid autoimmune disease. Actually, some of the NAbs related auto-reactivities, such as anti-DNA and anti-MOG, have been associated with autoimmunity. Furthermore, NAbs have been shown to bind to ‘neo-self’ carbohydrate antigens on glycolipids and glycoproteins found on malignant but not normal cells, which suggests NAbs may take part in tumor immunosurveillance. Many aspects regarding NAbs have yet to be studied in more detail: the reactivity and function of NAbs in health and disease, the behavior of the NAb repertoire with increasing age, the regulation of natural antibody production and auto-reactivity, the ways to specifically activate NAbs producing cells with desired specificities, the characteristics of human NAbs, among others. This special topics eBook consists of a number of articles exploring the cells that produce NAbs as well as the characteristics, function, specificity, and/or the role of natural antibodies in health and disease.


Book
IgM and Its Receptors and Binding Proteins
Authors: ---
ISBN: 3319645269 3319645242 Year: 2017 Publisher: Cham : Springer International Publishing : Imprint: Springer,

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This volume reviews the current state of research on the IgM antibody and its multiple receptors and binding proteins. Interactions of the IgM ligands with these molecules are important for protection against infections as a first line of defense, as well as for regulation of immune responses to pathogens and self-antigens. The book includes up-to-date information on: (i) the phylogeny of three IgM-binding receptors [polymeric Ig receptor (pIgR), Fc receptor for both IgA and IgM (Fcα/µR), and Fc receptor for IgM only (FcµR)]; (ii) the lymphocyte-restricted distribution and unique ligand-binding activity of FcµR; (iii) the definition and potential function of Fc receptor-like molecule A (FCRLA) as a resident endoplasmic reticulum protein that binds IgM, but also IgG and IgA; (iv) IgM antibody-mediated enhancement of humoral immune responses, highlighting the importance of complement and its receptors, (v) the numerous important roles of IgM natural antibodies in regulation of inflammation. It is an invaluable resource for researchers and clinicians alike.

Union of Parts : Labor Politics in Postwar Germany
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ISBN: 1501717561 9781501717567 0801425867 9780801425868 Year: 2018 Publisher: Ithaca, NY : Cornell University Press,

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Union of Parts examines one of the central puzzles in the economic and political successes of West Germany (FRG). In the decades between world war and reunification with the East, the FRG provided a model for combining high rates of unionization and substantial labor peace-indeed, for collaboration between organized labor and organized capital as both groups faced the dislocations involved in adjusting to a changing global marketplace.


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Infectieziekten en afweerstoornissen bij kinderen
Authors: --- --- ---
ISBN: 9789085621232 Year: 2013 Publisher: Houten Prelum

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In Infectieziekten en afweerstoornissen bij kinderen worden de ziektegeschiedenissen gepresenteerd van 39 kinderen. Daarin komen de meest relevante bij kinderen voorkomende infectieziekten en afweerstoornissen aan bod, van streptokokkeninfecties tot lymeziekte, van de ziekte van Kawasaki tot ataxia teleangiectasia.Achtergronden en consequenties van elke aandoening worden uitgebreid besproken, waarbij ruim gebruik is gemaakt van speciaal voor deze uitgave vervaardigde illustraties.Het boek is tot stand gekomen op initiatief van kinderarts prof. Marceline van Furth en bevat bijdragen van talrijke experts uit Nederland en België. Door de gekozen opzet is het boek zowel geschikt voor studenten die zich willen scholen in de kinderinfectieziekten en kinderimmunologie, als voor kinderartsen (in opleiding) en allen die betrokken zijn bij de behandeling van zieke kinderen.


Book
Characterization of Antibody Responses to Virus Infections in Humans
Authors: ---
Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

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This book focuses on fundamental and applied research on humoral immune responses to viral infections in humans. The comprehensive study of antibody response is critical for the development of diagnostic tools, vaccines, and immunotherapeutics against life-threatening viral infections. Special attention is given to serological surveillance and characterization of virus-neutralizing antibodies.


Book
Characterization of Antibody Responses to Virus Infections in Humans
Authors: ---
Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

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This book focuses on fundamental and applied research on humoral immune responses to viral infections in humans. The comprehensive study of antibody response is critical for the development of diagnostic tools, vaccines, and immunotherapeutics against life-threatening viral infections. Special attention is given to serological surveillance and characterization of virus-neutralizing antibodies.


Book
Characterization of Antibody Responses to Virus Infections in Humans
Authors: ---
Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

This book focuses on fundamental and applied research on humoral immune responses to viral infections in humans. The comprehensive study of antibody response is critical for the development of diagnostic tools, vaccines, and immunotherapeutics against life-threatening viral infections. Special attention is given to serological surveillance and characterization of virus-neutralizing antibodies.

Keywords

Medicine --- highly pathogenic avian influenza virus --- H5N6 (clade 2.3.4.4) --- human sera --- SARS-CoV-2 --- COVID-19 --- full proteome --- peptide microarrays --- glycan microarrays --- seroprevalence --- ELISA --- neutralization assay --- viral persistence --- serum antibody --- neutralization efficacy --- cytokine profile --- neutralising antibodies --- filoviruses --- ebolavirus --- post-vaccination --- post-infection --- monoclonal antibodies --- longitudinal antibody response --- antibody specificity --- recombinant proteins --- virus neutralization --- coronavirus disease 2019 --- Guangdong --- China --- antibody --- varicella-zoster virus (VZV) --- chemiluminescent immunoassay (CLIA) --- IgA --- IgG --- IgM --- diagnostic test --- antibody therapeutic --- cryo-EM --- filovirus --- marburgvirus --- structural biology --- X-ray crystallography --- highly pathogenic avian influenza virus --- H5N6 (clade 2.3.4.4) --- human sera --- SARS-CoV-2 --- COVID-19 --- full proteome --- peptide microarrays --- glycan microarrays --- seroprevalence --- ELISA --- neutralization assay --- viral persistence --- serum antibody --- neutralization efficacy --- cytokine profile --- neutralising antibodies --- filoviruses --- ebolavirus --- post-vaccination --- post-infection --- monoclonal antibodies --- longitudinal antibody response --- antibody specificity --- recombinant proteins --- virus neutralization --- coronavirus disease 2019 --- Guangdong --- China --- antibody --- varicella-zoster virus (VZV) --- chemiluminescent immunoassay (CLIA) --- IgA --- IgG --- IgM --- diagnostic test --- antibody therapeutic --- cryo-EM --- filovirus --- marburgvirus --- structural biology --- X-ray crystallography

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