Biologie Cellulaire Et Mol Culaire De La Relation Materno Foetale

The field of cytokine research is expanding at a rapid pace Contributions from the major leading groups in the world on the structure and biological properties of cytokine and cytokine receptors, as well as integrated reviews on cytokines in various physiological and pathological conditions were presented in three issues of International Reviews of Immunology This collection of articles provided a unique source of information However, important discoveries are emerging very rapidly and some of the reviews written in 1997 are already outdated In this book, the editors assemble reviews that have been updated by their authors to include all the recent publications and unpublished data from the authors' laboratories This volume should serve as an excellent reference source for all those concerned by the multiple faces of cytokines in basic research and in the clinic

Published in 1994: The Editors have outlines many advances in the field of uterine physiology in hopes of furthering the science.

First multi-year cumulation covers six years: 1965-70.

Many questions were raised during this multidisciplinary meeting during which geneticists, haematologists, embryologists, immunologists, transplant surgeons and physicians exchanged views on these questions. The second part of the meeting was devoted to an examination of the mechanisms of medullary deficiency. A more clinical approach was taken to the epidemiological, molecular and genetic aspects of medullary deficiency. There was also discussion of various therapeutic methods, including transplants, the use of haematopoietic growth factors, immunosuppressive treatments and gene therapy. Proceedings of the joint international workshop on "Foetal and neonatal hematopoiesis and mechanisms of bone marrow failure", Paris, April 1995.

Early embryonic loss is a continuing social and economic global problem. In human populations the estimates of interruptions early in pregnancy range from 35-60%. In animal husbandry (swine, ruminants) fully 30% of pregnancies fail to survive early events of gestation. The futility associated with this persistant high risk is even more unsettling because of advances made in assisted reproductive technology which, although this very selective methodology has added to our knowledge of embryo-endometrial interactions, has resulted in a birth rate of only 14%. These studies have instigated comparisons of the live relative contributions of the embryo and the uterus to the outcome of pregnancy. These analyses have shown that we have learned significantly less about the role of the uterus in deciding the outcome of either natural or assisted pregnancies. In 1979 a quotation by George Corner was used to set the tone of a meeting that was devoted to discussion of the cellular and molecular aspects of implantation. In spite of the proliferation in research activity which occurred in the following 15 years our real understanding of the embryo transfer process has fallen short of our expectations. We use the Corner quotation, once again, to preface this symposium so that we may recall that the fundamental nature of the process which regulates embryo-endometrial interactions still escapes us.

Since a September, 1992, Nature article which read: “Can there be life without LIF?”, researchers now realize that the maternal immune system is both a foe (it can reject the conception) and a friend (immune cells and molecules are also necessary for successful pregnancy). Leukemia Inhibitory Factor (LIF) when absent, prevents embryo implantation in rodents. From fecundation to parturition, immunity acts as a Janus, required but potentially dangerous. However, the complexity and the diversity of immunity in pregnancy deters many from entering the field. This book will try to give a complete overview of immunity from gametes till parturition, in brief, but with complete chapters and subsections, each written by specialists in the field. The importance of the topic relies not only on “the riddle of the fetal allograft”, which is per se fascinating, but on its consequences, linked to the development of IVF and in general, Assisted Reproductive Technologies (ART) / Medicine. Since the discovery that there would not be (mammalian) life without LIF, it has become clear that Immune Molecules, and in general, transient post mating inflammatory reactions are required for successful implantation. Disruptions of this process can lead to implantation failure / sterility. In later stages of pregnancy immunological cells, mostly of the innate immune system, control formation of local spiral arteries. Finally, a state of tolerance establishes itself, whose “break’ leads to immune abortion and the vascular bed is further transformed and enlarged, till delivery, and here again “immunological cytokines” do play a major role and can eventually cause immune mediated abortion. Failure of, not just, the cytokine and cell recognition mediated dialogue, but also the pre and peri-implantation “preparation of the uterus”, as stated, leads to sterility, early pregnancy loss and recurrent abortions. There is also an increasingly stronger argument to implicate immunology in pre-eclampsia. Further still, immunology is also implicated in the control of local infection, mother to child transmission of pathogens (notably, but not limited to, HIV). Finally, pregnancy is the only known physiological phenomenon where the once named “suppressor T cells,” re-emerge as “regulatory T cells”, and play a cardinal role. This E-book provides a complete compendium of gynecological immunology, spanning from fecundation to delivery. Topics also include the role of various cell types (such as T regs ad NK cells) in implantation and uterine changes as well as the genetic regulation of immunological processes. As such it will be of interest not only to fundamental and reproductive immunologists, but more importantly, clinicians in obstetrics and gynecology.