Immune Infertility The Impact of Immune Reactions on Human Infertili

Infertility is defned as the inability to conceive after having unprotected intercourse for a year. Infertility is increasing worldwide and has various causes both in the male and the female partner. Immune reactions to sperm can contribute up to 2–30% of

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Walter K. H. Krause  •  Rajesh K. Naz

Immune Infertility The Impact of Immune Reactions on Human Infertility

Prof. Rajesh K. Naz West Virginia University School of Medicine Reproductive Biology Morgantown WV 26506 USA [email protected]

Prof. Dr. Walter K. H. Krause Universitätsklinikum Marburg Klinik für Andrologie und Venerologie Zentrum für Hautkrankheiten Deutschhausstr. 9 35033 Marburg Germany [email protected]

ISBN: 978-3-642-01378-2

e-ISBN: 978-3-642-01379-9

DOI: 10.1007/978-3-642-01379-9 Springer Dordrecht Heidelberg London New York Library of Congress Control Number: 2009934299 © Springer-Verlag Berlin Heidelberg 2009 This work is subject to copyright. All rights are reserved, whether the whole or part of the material is ­concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, ­broadcasting, reproduction on microfilm or in any other way, and storage in data banks. Duplication of this publication or parts thereof is permitted only under the provisions of the German Copyright Law of September 9, 1965, in its current version, and permission for use must always be obtained from Springer. Violations are liable to prosecution under the German Copyright Law. The use of general descriptive names, registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant ­protective laws and regulations and therefore free for general use. Product liability: The publishers cannot guarantee the accuracy of any information about dosage and application contained in this book. In every individual case the user must check such information by consulting the relevant literature. Cover design: eStudioCalamar, Figueres/Berlin Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com)

Preface

Infertility is defined as the inability to conceive after having unprotected intercourse for a year. Infertility is increasing worldwide and has various causes both in the male and the female partner. Immune reactions to sperm can contribute up to 2–30% of infertility. The sperm has both autoantigenic as well as isoantigenic potential, and is thus capable of producing antisperm antibodies (ASAs) and sperm-reactive T cells in both infertile men and women. Also, over 75% vasectomized men produce autoantibodies to sperm that can cause a problem in regaining fertility even after successful re-anastomosis in vasovasostomy. Early claims regarding the incidence and involvement of ASAs in involuntary human infertility were probably overemphasized because of unreliable techniques and naivety concerning the complexity of the immune response and antigenic nature of the sperm cell. These factors, the lack of well-designed and controlled experimental studies, and the dearth of effective therapeutic modalities resulted in the confusion of the occurrence and importance of ASAs in human infertility. Consequently, evaluation of infertile couples for ASAs and their possibl