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Author: M. Joseph
Publisher: Academic Press
ISBN: 0080534562
Category : Medical
Languages : en
Pages : 267
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Book Description
Platelets have long been the subject of much investigation in the areas of vascular physiology, biochemistry, immunology and physiopathology. Their ability to react to environmental stimuli, to modify their shape and metabolism despite being anuclear, has fascinated scientists.This volume looks specifically at the involvement of blood platelets outside their 'classical' field of application, in the physiopathological mechanics of allergy and inflammation. The coverage includes the role of platelets in bacterial, parasitic and viral diseases and in tumour cell interactions.
Author: M. Joseph
Publisher: Academic Press
ISBN:
Category : Medical
Languages : en
Pages : 280
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Book Description
Platelets have long been the subject of much investigation in the areas of vascular physiology, biochemistry, immunology and physiopathology. Their ability to react to environmental stimuli, to modify their shape and metabolism despite being anuclear, has fascinated scientists. This volume looks specifically at the involvement of blood platelets outside their 'classical' field of application, in the physiopathological mechanics of allergy and inflammation. The coverage includes the role of platelets in bacterial, parasitic and viral diseases and in tumour cell interactions.
Author: Olivier Garraud
Publisher: Frontiers Media SA
ISBN: 2889197409
Category : Immunologic diseases. Allergy
Languages : en
Pages : 113
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Book Description
Are platelets cells? (Not everyone agrees, since they are non-nucleate). And if platelets are cells - which all specialists consider at the time being - are they immune cells? The issue that platelets participate in immunity is no longer debated; however, the issue that they are key cells in immunity is challenged. It has even been proposed a couple of years ago that platelets can present antigen to T-lymphocytes by using their HLA class I molecules. No one has the same functional definition of platelets. The ‘Frontiers Research Topic’- coordinators’ own view is that platelets are primarily repairing cells, what they do in deploying tools of physiological inflammation. This function is better acknowledged as primary hemostasis, i.e. platelet adherence to injured or wounded vessels, followed by activation, aggregation, and constitution of the initial clot. Platelets would thus repair damaged vascular endothelium; so doing, as they patrol to detect damages, they sense danger along the vascular arborescence. As the latter is immense, platelets get close to tissues, which are not allowed to them under ‘physiological’ conditions but are readily accessible in pathology. Platelets are equipped with a variety of Pathogen Recognition Receptors such as TLRs; they have a complete signalosome, which is functional until the phosphorylation of NFkB; they have been proved to retro-transcribe RNA and synthesize de novo proteins; etc. Platelets participate to inflammation along the whole spectrum: from physiological (tissue repair, healing) to acute/severe inflammation (as can be seen in e.g. sepsis). In general, platelets engage complex interactions with most infectious pathogens. We propose there to cover those topics - from physiology to pathology, that put platelets within cells that not only take place in-, but also are key players of-, innate immunity. The relation of platelets with adaptive immunity is even more complex. Not everyone is convinced that platelets present antigens; however, platelets influence adaptive immunity since they have mutual interactions with Dendritic cells, Monocytes/Macrophages, and B-lymphocytes (the key players of antigen presentation); they also have mutual interactions with T-lymphocytes, though is issue is less clearly deciphered. We propose to also cover these topics - or to present the forum. There is another issue which is medically relevant - speaking of physiology/physiopathology-: this is fetal maternal incompatibility of platelet specific antigens (the HPA system) and the likely formation of maternal antibodies that often injure the newborn with risks of severe thrombocytopenia and intracranial hemorrhage. We propose an update on this issue as well. Last, platelets are very special because they can be directly therapeutic (by transfusion), even when being offered by a generous blood donor displaying given genetic and phenotypic parameters to a patient/recipient in need, who also display his/her own genetic and phenotypic parameters, which - for a large part - differ from the donor's ones. Besides immunization - via mechanisms probably close to the fetal maternal platelet incompatibility, but likely not similar -, transfusion has allowed the identification of the tremendous capacity of platelets to mediate inflammation: we propose to conclude the Topics with this item/forum.
Author: Mirta Schattner
Publisher: Frontiers Media SA
ISBN: 2889638391
Category :
Languages : en
Pages : 196
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Book Description
Author: Cécile Kaplan-Gouet
Publisher: John Libbey Eurotext
ISBN: 9780861962853
Category : Medical
Languages : en
Pages : 364
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Book Description
Includes proceedings of the first European Symposium on platelet immunology held in Paris, Palais du Luxembourg (France), 1 to 2 March 1990."
Author: Katherine May Elliott
Publisher:
ISBN:
Category : Medical
Languages : en
Pages : 368
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Book Description
Author: B. B. Vargaftig
Publisher: Elsevier
ISBN: 1483156354
Category : Medical
Languages : en
Pages : 236
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Book Description
Advances in Pharmacology and Therapeutics, Volume 4: Prostaglandins-Immunopharmacology contains the proceedings of the 7th International Congress of Pharmacology held in Paris, France, in 1978. The papers explore advances in the understanding of prostaglandins, their immunopharmacology, and their therapeutic applications. Topics covered range from the biochemistry of prostaglandins, thromboxanes, and prostacyclin to the pharmacology of blood platelets and pharmacological approaches to enhancement of immunity. This volume is comprised of 23 chapters and opens with a discussion on the discovery of prostaglandins and their possible biological functions, including platelet aggregation and adrenergic neurotransmission. The reader is then introduced to unstable metabolites of arachidonic acid in relation to thrombosis; pharmacological interference in biotransformation of arachidonic acid; participation of prostaglandins in inflammatory pain; and factors affecting the formation and actions of cyclic AMP in blood platelets. The following chapters explore the role of thymosin and the endocrine thymus in the maintenance of immune balance; effects of thymosin fraction 5 in cancer patients; and the immunoregulatory activities of non-toxic synthetic polyribonucleotides. This book will be of interest to practitioners in biosciences, pharmacology, physiology, and medicine.
Author: Juulke Steuten
Publisher:
ISBN: 9789464833065
Category :
Languages : en
Pages : 0
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Book Description
"The adaptive immune system is a crucial part of the body’s defense against pathogens and other foreign substances. Throughout this thesis, multiple mechanisms regulating adaptive immune responses are examined. Platelet transfusions are often used to treat patients with low platelet counts or bleeding disorders. However, the transfusion of platelets can also cause adverse immune reactions, such as transfusion-associated immune modulation and the formation of alloantibodies. The first part of this thesis describes immune modulation in the context of platelet transfusions as well as effects of differently glycosylated alloantibodies on platelet clearance upon transfusion. Insights provided in these chapters may help to improve safety and efficacy of platelet transfusions. In the second part of the thesis, the regulation of the dynamics of B cell responses are studied in more detail by investigating how local oxygen levels affect B cell differentiation into antibody-secreting cells (ASCs) and evaluating antigen- specific induction and ASC differentiation capacity of distinct subsets of CD11c+ Tbet+ B cells. Overall, the research described in this thesis expands our understanding of the mechanisms regulating adaptive immune responses, providing new insights into the dynamics of antibody formation and the factors that influence immune reactions by and to transfused platelets. This knowledge may ultimately be used to develop more effective and safer therapies for a wide range of immune-related disorders."--
Author: M. Joseph
Publisher: Academic Press
ISBN: 0080534562
Category : Medical
Languages : en
Pages : 267
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Book Description
Platelets have long been the subject of much investigation in the areas of vascular physiology, biochemistry, immunology and physiopathology. Their ability to react to environmental stimuli, to modify their shape and metabolism despite being anuclear, has fascinated scientists.This volume looks specifically at the involvement of blood platelets outside their 'classical' field of application, in the physiopathological mechanics of allergy and inflammation. The coverage includes the role of platelets in bacterial, parasitic and viral diseases and in tumour cell interactions.
Author: Gunnar Myllylä
Publisher:
ISBN:
Category : Blood
Languages : en
Pages : 56
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Book Description
Author: Steve W. Kerrigan
Publisher: BoD – Books on Demand
ISBN: 9535122088
Category : Medical
Languages : en
Pages : 250
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Book Description
Platelets play a key role in thrombosis and haemostasis. However recent evidence clearly demonstrates that the functional role of platelets extends to many other processes in the body. With an internationally recognised list of contributing authors, The Non-Thrombotic Role of Platelets in Health and Disease, is a unique and definitive source of state-of-the-art knowledge about the additional role of platelets outside thrombosis and haemostasis. The intended audience for The Non-Thrombotic Role of Platelets in Health and Disease includes platelet biologists, microbiologists, immunologists, haematologists, oncologists, respiratory physicians, cardiologists, neurobiologists, tissue engineers, as well as students and fellows in these areas.
